[
  {
    "path": "README.md",
    "content": "# A2OJ-Ladder\n\n| Checkbox | ID  | Name | Problems Count |\n|---|:---:|:---:|---|\n|<ul><li>- [ ] Done</li></ul>|11|[Codeforces Rating < 1300](ladders/11.%20Codeforces%20Rating%20%3C%201300/README.md)|100|\n|<ul><li>- [ ] Done</li></ul>|12|[1300 <= Codeforces Rating <= 1399](ladders/12.%201300%20%3C%3D%20Codeforces%20Rating%20%3C%3D%201399/README.md)|100|\n|<ul><li>- [ ] Done</li></ul>|13|[1400 <= Codeforces Rating <= 1499](ladders/13.%201400%20%3C%3D%20Codeforces%20Rating%20%3C%3D%201499/README.md)|100|\n|<ul><li>- [ ] Done</li></ul>|14|[1500 <= Codeforces Rating <= 1599](ladders/14.%201500%20%3C%3D%20Codeforces%20Rating%20%3C%3D%201599/README.md)|100|\n|<ul><li>- [ ] Done</li></ul>|15|[1600 <= Codeforces Rating <= 1699](ladders/15.%201600%20%3C%3D%20Codeforces%20Rating%20%3C%3D%201699/README.md)|100|\n|<ul><li>- [ ] Done</li></ul>|16|[1700 <= Codeforces Rating <= 1799](ladders/16.%201700%20%3C%3D%20Codeforces%20Rating%20%3C%3D%201799/README.md)|100|\n|<ul><li>- [ ] Done</li></ul>|17|[1800 <= Codeforces Rating <= 1899](ladders/17.%201800%20%3C%3D%20Codeforces%20Rating%20%3C%3D%201899/README.md)|100|\n|<ul><li>- [ ] Done</li></ul>|18|[1900 <= Codeforces Rating <= 1999](ladders/18.%201900%20%3C%3D%20Codeforces%20Rating%20%3C%3D%201999/README.md)|100|\n|<ul><li>- [ ] Done</li></ul>|19|[2000 <= Codeforces Rating <= 2099](ladders/19.%202000%20%3C%3D%20Codeforces%20Rating%20%3C%3D%202099/README.md)|100|\n|<ul><li>- [ ] Done</li></ul>|20|[2100 <= Codeforces Rating <= 2199](ladders/20.%202100%20%3C%3D%20Codeforces%20Rating%20%3C%3D%202199/README.md)|100|\n|<ul><li>- [ ] Done</li></ul>|21|[Codeforces Rating >= 2200](ladders/21.%20Codeforces%20Rating%20%3E%3D%202200/README.md)|100|\n|<ul><li>- [ ] Done</li></ul>|22|[Codeforces Rating < 1300 (Extra)](ladders/22.%20Codeforces%20Rating%20%3C%201300%20%28Extra%29/README.md)|200|\n|<ul><li>- [ ] Done</li></ul>|23|[1300 <= Codeforces Rating <= 1399 (Extra)](ladders/23.%201300%20%3C%3D%20Codeforces%20Rating%20%3C%3D%201399%20%28Extra%29/README.md)|200|\n|<ul><li>- [ ] Done</li></ul>|24|[1400 <= Codeforces Rating <= 1499 (Extra)](ladders/24.%201400%20%3C%3D%20Codeforces%20Rating%20%3C%3D%201499%20%28Extra%29/README.md)|200|\n|<ul><li>- [ ] Done</li></ul>|25|[1500 <= Codeforces Rating <= 1599 (Extra)](ladders/25.%201500%20%3C%3D%20Codeforces%20Rating%20%3C%3D%201599%20%28Extra%29/README.md)|200|\n|<ul><li>- [ ] Done</li></ul>|26|[1600 <= Codeforces Rating <= 1699 (Extra)](ladders/26.%201600%20%3C%3D%20Codeforces%20Rating%20%3C%3D%201699%20%28Extra%29/README.md)|200|\n|<ul><li>- [ ] Done</li></ul>|27|[1700 <= Codeforces Rating <= 1799 (Extra)](ladders/27.%201700%20%3C%3D%20Codeforces%20Rating%20%3C%3D%201799%20%28Extra%29/README.md)|200|\n|<ul><li>- [ ] Done</li></ul>|28|[1800 <= Codeforces Rating <= 1899 (Extra)](ladders/28.%201800%20%3C%3D%20Codeforces%20Rating%20%3C%3D%201899%20%28Extra%29/README.md)|200|\n|<ul><li>- [ ] Done</li></ul>|29|[1900 <= Codeforces Rating <= 1999 (Extra)](ladders/29.%201900%20%3C%3D%20Codeforces%20Rating%20%3C%3D%201999%20%28Extra%29/README.md)|200|\n|<ul><li>- [ ] Done</li></ul>|30|[2000 <= Codeforces Rating <= 2099 (Extra)](ladders/30.%202000%20%3C%3D%20Codeforces%20Rating%20%3C%3D%202099%20%28Extra%29/README.md)|200|\n|<ul><li>- [ ] Done</li></ul>|31|[2100 <= Codeforces Rating <= 2199 (Extra)](ladders/31.%202100%20%3C%3D%20Codeforces%20Rating%20%3C%3D%202199%20%28Extra%29/README.md)|200|\n|<ul><li>- [ ] Done</li></ul>|32|[Codeforces Rating >= 2200 (Extra)](ladders/32.%20Codeforces%20Rating%20%3E%3D%202200%20%28Extra%29/README.md)|200|\n|<ul><li>- [ ] Done</li></ul>|4|[Codeforces Div. 2, A](ladders/04.%20Codeforces%20Div.%202%2C%20A/README.md)|100|\n|<ul><li>- [ ] Done</li></ul>|5|[Codeforces Div. 2, B](ladders/05.%20Codeforces%20Div.%202%2C%20B/README.md)|100|\n|<ul><li>- [ ] Done</li></ul>|6|[Codeforces Div. 2, C](ladders/06.%20Codeforces%20Div.%202%2C%20C/README.md)|100|\n|<ul><li>- [ ] Done</li></ul>|7|[Codeforces Div. 2, D](ladders/07.%20Codeforces%20Div.%202%2C%20D/README.md)|100|\n|<ul><li>- [ ] Done</li></ul>|8|[Codeforces Div. 2, E](ladders/08.%20Codeforces%20Div.%202%2C%20E/README.md)|100|\n|<ul><li>- [ ] Done</li></ul>|9|[Codeforces Div. 1, D](ladders/09.%20Codeforces%20Div.%201%2C%20D/README.md)|100|\n|<ul><li>- [ ] Done</li></ul>|10|[Codeforces Div. 1, E](ladders/10.%20Codeforces%20Div.%201%2C%20E/README.md)|100|\n\n## Usage\nsimply fork the repo and work on your own on the problems and add your checkmarks.\n\n### Thanks\n"
  },
  {
    "path": "categories/001. Dynamic_Programming/README.md",
    "content": "# 001. Dynamic_Programming\n\n\n| Checkbox | ID | Problem Name|Online Judge|Year|Contest|Difficulty Level|\n|:---:|:---:|:---:|:---:|:---:|:---:|:---:|\n|<ul><li>- [ ] Done</li></ul>|1|[ACM (ACronymMaker)](http://www.spoj.com/problems/ACMAKER/)|SPOJ|||1|\n|<ul><li>- [ ] Done</li></ul>|2|[Alphacode](http://www.spoj.com/problems/ACODE/)|SPOJ|||1|\n|<ul><li>- [ ] Done</li></ul>|3|[Assignments](http://www.spoj.com/problems/ASSIGN/)|SPOJ|||1|\n|<ul><li>- [ ] Done</li></ul>|4|[Tower of Babylon](http://www.spoj.com/problems/BABTWR/)|SPOJ|||1|\n|<ul><li>- [ ] Done</li></ul>|5|[Philosophers Stone](http://www.spoj.com/problems/BYTESM2/)|SPOJ|||1|\n|<ul><li>- [ ] Done</li></ul>|6|[Bytelandian gold coins](http://www.spoj.com/problems/COINS/)|SPOJ|||1|\n|<ul><li>- [ ] Done</li></ul>|7|[Summing to a Square Prime](http://www.spoj.com/problems/CZ_PROB1/)|SPOJ|||1|\n|<ul><li>- [ ] Done</li></ul>|8|[Tiling a Grid With Dominoes](http://www.spoj.com/problems/GNY07H/)|SPOJ|||1|\n|<ul><li>- [ ] Done</li></ul>|9|[BLAST](http://www.spoj.com/problems/MBLAST/)|SPOJ|||1|\n|<ul><li>- [ ] Done</li></ul>|10|[Coins Game](http://www.spoj.com/problems/MCOINS/)|SPOJ|||1|\n|<ul><li>- [ ] Done</li></ul>|11|[Rectangles Perimeter](http://www.spoj.com/problems/MMAXPER/)|SPOJ|||1|\n|<ul><li>- [ ] Done</li></ul>|12|[Party Schedule](http://www.spoj.com/problems/PARTY/)|SPOJ|||1|\n|<ul><li>- [ ] Done</li></ul>|13|[Permutations](http://www.spoj.com/problems/PERMUT1/)|SPOJ|||1|\n|<ul><li>- [ ] Done</li></ul>|14|[Piggy-Bank](http://www.spoj.com/problems/PIGBANK/)|SPOJ|||1|\n|<ul><li>- [ ] Done</li></ul>|15|[Rent your airplane and make money](http://www.spoj.com/problems/RENT/)|SPOJ|||1|\n|<ul><li>- [ ] Done</li></ul>|16|[Roads](http://www.spoj.com/problems/ROADS/)|SPOJ|||1|\n|<ul><li>- [ ] Done</li></ul>|17|[Candy](http://www.spoj.com/problems/SAMER08C/)|SPOJ|||1|\n|<ul><li>- [ ] Done</li></ul>|18|[DNA Sequences](http://www.spoj.com/problems/SAMER08D/)|SPOJ|||1|\n|<ul><li>- [ ] Done</li></ul>|19|[Feynman](http://www.spoj.com/problems/SAMER08F/)|SPOJ|||1|\n|<ul><li>- [ ] Done</li></ul>|20|[Scuba diver](http://www.spoj.com/problems/SCUBADIV/)|SPOJ|||1|\n|<ul><li>- [ ] Done</li></ul>|21|[Help the soldier](http://www.spoj.com/problems/SOLDIER/)|SPOJ|||1|\n|<ul><li>- [ ] Done</li></ul>|22|[Sums in a Triangle](http://www.spoj.com/problems/SUMITR/)|SPOJ|||1|\n|<ul><li>- [ ] Done</li></ul>|23|[Trip](http://www.spoj.com/problems/TRIP/)|SPOJ|||1|\n|<ul><li>- [ ] Done</li></ul>|24|[Treats for the Cows](http://www.spoj.com/problems/TRT/)|SPOJ|||1|\n|<ul><li>- [ ] Done</li></ul>|25|[Two Ends](http://www.spoj.com/problems/TWENDS/)|SPOJ|||1|\n|<ul><li>- [ ] Done</li></ul>|26|[Is Bigger Smarter?](https://uva.onlinejudge.org/index.php?option=onlinejudge&page=show_problem&problem=1072)|UVA|||1|\n|<ul><li>- [ ] Done</li></ul>|27|[Unidirectional TSP](https://uva.onlinejudge.org/index.php?option=onlinejudge&page=show_problem&problem=52)|UVA|||1|\n|<ul><li>- [ ] Done</li></ul>|28|[Vertex Cover](http://www.spoj.com/problems/PT07X/)|SPOJ|||1|\n|<ul><li>- [ ] Done</li></ul>|29|[Aibohphobia](http://www.spoj.com/problems/AIBOHP/)|SPOJ|||1|\n|<ul><li>- [ ] Done</li></ul>|30|[Black or White](http://www.spoj.com/problems/BORW/)|SPOJ|||1|\n|<ul><li>- [ ] Done</li></ul>|31|[Fool the Police](http://www.spoj.com/problems/FPOLICE/)|SPOJ|||1|\n|<ul><li>- [ ] Done</li></ul>|32|[Palindrome 2000](http://www.spoj.com/problems/IOIPALIN/)|SPOJ|||1|\n|<ul><li>- [ ] Done</li></ul>|33|[Chop Ahoy! Revisited!](http://www.spoj.com/problems/ANARC05H/)|SPOJ|||1|\n|<ul><li>- [ ] Done</li></ul>|34|[Seinfeld](http://www.spoj.com/problems/ANARC09A/)|SPOJ|||1|\n|<ul><li>- [ ] Done</li></ul>|35|[Cross-country](http://www.spoj.com/problems/CRSCNTRY/)|SPOJ|||1|\n|<ul><li>- [ ] Done</li></ul>|36|[In Danger](http://www.spoj.com/problems/DANGER/)|SPOJ|||1|\n|<ul><li>- [ ] Done</li></ul>|37|[Distinct Subsequences](http://www.spoj.com/problems/DSUBSEQ/)|SPOJ|||1|\n|<ul><li>- [ ] Done</li></ul>|38|[Edit distance](http://www.spoj.com/problems/EDIST/)|SPOJ|||1|\n|<ul><li>- [ ] Done</li></ul>|39|[Fishmonger](http://www.spoj.com/problems/FISHER/)|SPOJ|||1|\n|<ul><li>- [ ] Done</li></ul>|40|[Adjacent Bit Counts](http://www.spoj.com/problems/GNYR09F/)|SPOJ|||1|\n|<ul><li>- [ ] Done</li></ul>|41|[The Double HeLiX](http://www.spoj.com/problems/ANARC05B/)|SPOJ|||1|\n|<ul><li>- [ ] Done</li></ul>|42|[Pocket Money](http://www.spoj.com/problems/LISA/)|SPOJ|||1|\n|<ul><li>- [ ] Done</li></ul>|43|[LATGACH3](http://www.spoj.com/problems/M3TILE/)|SPOJ|||1|\n|<ul><li>- [ ] Done</li></ul>|44|[Mixtures](http://www.spoj.com/problems/MIXTURES/)|SPOJ|||1|\n|<ul><li>- [ ] Done</li></ul>|45|[No Change](http://www.spoj.com/problems/NOCHANGE/)|SPOJ|||1|\n|<ul><li>- [ ] Done</li></ul>|46|[Square Brackets](http://www.spoj.com/problems/SQRBR/)|SPOJ|||1|\n|<ul><li>- [ ] Done</li></ul>|47|[Dollars](https://uva.onlinejudge.org/index.php?option=onlinejudge&page=show_problem&problem=83)|UVA|||1|\n|<ul><li>- [ ] Done</li></ul>|48|[Let Me Count The Ways](https://uva.onlinejudge.org/index.php?option=onlinejudge&page=show_problem&problem=293)|UVA|||1|\n|<ul><li>- [ ] Done</li></ul>|49|[Cutting Sticks](https://uva.onlinejudge.org/index.php?option=onlinejudge&page=show_problem&problem=944)|UVA|||1|\n|<ul><li>- [ ] Done</li></ul>|50|[Dividing coins](https://uva.onlinejudge.org/index.php?option=onlinejudge&page=show_problem&problem=503)|UVA|||1|\n|<ul><li>- [ ] Done</li></ul>|51|[Ingenuous Cubrency](https://uva.onlinejudge.org/index.php?option=onlinejudge&page=show_problem&problem=2078)|UVA|||1|\n|<ul><li>- [ ] Done</li></ul>|52|[Chocolate](http://www.spoj.com/problems/CHOCOLA/)|SPOJ|||1|\n|<ul><li>- [ ] Done</li></ul>|53|[Bee Walk](http://www.spoj.com/problems/MBEEWALK/)|SPOJ|||1|\n|<ul><li>- [ ] Done</li></ul>|54|[Sweet and Sour Rock](http://www.spoj.com/problems/ROCK/)|SPOJ|||1|\n|<ul><li>- [ ] Done</li></ul>|55|[Activities](http://www.spoj.com/problems/ACTIV/)|SPOJ|||1|\n|<ul><li>- [ ] Done</li></ul>|56|[Martian Mining](http://www.spoj.com/problems/MARTIAN/)|SPOJ|||1|\n|<ul><li>- [ ] Done</li></ul>|57|[Phidias](http://www.spoj.com/problems/PHIDIAS/)|SPOJ|||1|\n|<ul><li>- [ ] Done</li></ul>|58|[Sum of Digits](http://www.spoj.com/problems/CPCRC1C/)|SPOJ|||1|\n|<ul><li>- [ ] Done</li></ul>|59|[Pilots](http://www.spoj.com/problems/MPILOT/)|SPOJ|||1|\n|<ul><li>- [ ] Done</li></ul>|60|[Tri graphs](http://www.spoj.com/problems/ACPC10D/)|SPOJ|||1|\n|<ul><li>- [ ] Done</li></ul>|61|[Cut Ribbon](http://codeforces.com/problemset/problem/189/A)|Codeforces||Codeforces Round #119 (Div. 2)|1|\n|<ul><li>- [ ] Done</li></ul>|62|[Tetrahedron](http://codeforces.com/problemset/problem/166/E)|Codeforces||Codeforces Round #113 (Div. 2)|1|\n|<ul><li>- [ ] Done</li></ul>|63|[A+B Problem](http://poj.org/problem?id=1000)|PKU|||1|\n|<ul><li>- [ ] Done</li></ul>|64|[Exponentiation](http://poj.org/problem?id=1001)|PKU|||1|\n|<ul><li>- [ ] Done</li></ul>|65|[Hangover](http://poj.org/problem?id=1003)|PKU|||1|\n|<ul><li>- [ ] Done</li></ul>|66|[THE DRUNK JAILER](http://poj.org/problem?id=1218)|PKU|||1|\n|<ul><li>- [ ] Done</li></ul>|67|[Homer Simpson](https://uva.onlinejudge.org/index.php?option=onlinejudge&page=show_problem&problem=1406)|UVA|||1|\n|<ul><li>- [ ] Done</li></ul>|68|[SuperSale](https://uva.onlinejudge.org/index.php?option=onlinejudge&page=show_problem&problem=1071)|UVA|||1|\n|<ul><li>- [ ] Done</li></ul>|69|[Luggage](https://uva.onlinejudge.org/index.php?option=onlinejudge&page=show_problem&problem=1605)|UVA|||1|\n|<ul><li>- [ ] Done</li></ul>|70|[Wedding shopping](https://uva.onlinejudge.org/index.php?option=onlinejudge&page=show_problem&problem=2445)|UVA|||1|\n|<ul><li>- [ ] Done</li></ul>|71|[Maximum Sum](https://uva.onlinejudge.org/index.php?option=onlinejudge&page=show_problem&problem=44)|UVA|||1|\n|<ul><li>- [ ] Done</li></ul>|72|[How do you add?](https://uva.onlinejudge.org/index.php?option=onlinejudge&page=show_problem&problem=1884)|UVA|||1|\n|<ul><li>- [ ] Done</li></ul>|73|[Training for final](http://www.spoj.com/problems/TRIKA/)|SPOJ|||1|\n|<ul><li>- [ ] Done</li></ul>|74|[Easy Longest Increasing Subsequence](http://www.spoj.com/problems/ELIS/)|SPOJ|||1|\n|<ul><li>- [ ] Done</li></ul>|75|[K-based Numbers](http://acm.timus.ru/problem.aspx?space=1&num=1009)|Timus|||1|\n|<ul><li>- [ ] Done</li></ul>|76|[K-based Numbers. Version 2](http://acm.timus.ru/problem.aspx?space=1&num=1012)|Timus|||1|\n|<ul><li>- [ ] Done</li></ul>|77|[Staircases](http://acm.timus.ru/problem.aspx?space=1&num=1017)|Timus|||1|\n|<ul><li>- [ ] Done</li></ul>|78|[Binary Apple Tree](http://acm.timus.ru/problem.aspx?space=1&num=1018)|Timus|||1|\n|<ul><li>- [ ] Done</li></ul>|79|[Lucky Tickets](http://acm.timus.ru/problem.aspx?space=1&num=1036)|Timus|||1|\n|<ul><li>- [ ] Done</li></ul>|80|[Square Country](http://acm.timus.ru/problem.aspx?space=1&num=1073)|Timus|||1|\n|<ul><li>- [ ] Done</li></ul>|81|[Binary Lexicographic Sequence](http://acm.timus.ru/problem.aspx?space=1&num=1081)|Timus|||1|\n|<ul><li>- [ ] Done</li></ul>|82|[Metro](http://acm.timus.ru/problem.aspx?space=1&num=1119)|Timus|||1|\n|<ul><li>- [ ] Done</li></ul>|83|[Maximum Sum](http://acm.timus.ru/problem.aspx?space=1&num=1146)|Timus|||1|\n|<ul><li>- [ ] Done</li></ul>|84|[Scientific Conference](http://acm.timus.ru/problem.aspx?space=1&num=1203)|Timus|||1|\n|<ul><li>- [ ] Done</li></ul>|85|[Flags](http://acm.timus.ru/problem.aspx?space=1&num=1225)|Timus|||1|\n|<ul><li>- [ ] Done</li></ul>|86|[Milliard Vasya's Function](http://acm.timus.ru/problem.aspx?space=1&num=1353)|Timus|||1|\n|<ul><li>- [ ] Done</li></ul>|87|[Collecting Beepers](https://uva.onlinejudge.org/index.php?option=onlinejudge&page=show_problem&problem=1437)|UVA|||1|\n|<ul><li>- [ ] Done</li></ul>|88|[Getting in Line](https://uva.onlinejudge.org/index.php?option=onlinejudge&page=show_problem&problem=152)|UVA|||1|\n|<ul><li>- [ ] Done</li></ul>|89|[Army](http://codeforces.com/problemset/problem/38/A)|Codeforces||School Personal Contest #1 (Winter Computer School 2010/11) - Codeforces Beta Round #38 (ACM-ICPC Rules)|1|\n|<ul><li>- [ ] Done</li></ul>|90|[The Tower of Babylon](https://uva.onlinejudge.org/index.php?option=onlinejudge&page=show_problem&problem=378)|UVA|||1|\n|<ul><li>- [ ] Done</li></ul>|91|[Magic Grid](http://www.spoj.com/problems/AMR11A/)|SPOJ|||1|\n|<ul><li>- [ ] Done</li></ul>|92|[Building Bridges](http://www.spoj.com/problems/BRIDGE/)|SPOJ|||1|\n|<ul><li>- [ ] Done</li></ul>|93|[Largest Submatrix](https://uva.onlinejudge.org/index.php?option=onlinejudge&page=show_problem&problem=777)|UVA|||1|\n|<ul><li>- [ ] Done</li></ul>|94|[Take the Land](https://uva.onlinejudge.org/index.php?option=onlinejudge&page=show_problem&problem=1015)|UVA|||1|\n|<ul><li>- [ ] Done</li></ul>|95|[Non-Decreasing Digits](http://www.spoj.com/problems/NY10E/)|SPOJ|||1|\n|<ul><li>- [ ] Done</li></ul>|96|[Blueberries](http://www.spoj.com/problems/RPLB/)|SPOJ|||1|\n|<ul><li>- [ ] Done</li></ul>|97|[DIE HARD](http://www.spoj.com/problems/DIEHARD/)|SPOJ|||1|\n|<ul><li>- [ ] Done</li></ul>|98|[Save Thy Toys](http://www.spoj.com/problems/DCEPC501/)|SPOJ|||1|\n|<ul><li>- [ ] Done</li></ul>|99|[0110SS](http://www.spoj.com/problems/IWGBS/)|SPOJ|||1|\n|<ul><li>- [ ] Done</li></ul>|100|[Tile Code](https://icpcarchive.ecs.baylor.edu/index.php?option=onlinejudge&page=show_problem&problem=1905)|Live Archive|2007|Asia - Seoul|1|\n|<ul><li>- [ ] Done</li></ul>|101|[Tiling Up Blocks](https://icpcarchive.ecs.baylor.edu/index.php?option=onlinejudge&page=show_problem&problem=816)|Live Archive|2003|Asia - Kaohsiung|1|\n|<ul><li>- [ ] Done</li></ul>|102|[Candy](https://icpcarchive.ecs.baylor.edu/index.php?option=onlinejudge&page=show_problem&problem=2213)|Live Archive|2008|Latin America - South America|1|\n|<ul><li>- [ ] Done</li></ul>|103|[Fibonacci Words](https://icpcarchive.ecs.baylor.edu/index.php?option=onlinejudge&page=show_problem&problem=4040)|Live Archive|2012|World Finals - Warsaw|1|\n|<ul><li>- [ ] Done</li></ul>|104|[Hotels Along the Croatian Coast](http://www.spoj.com/problems/HOTELS/)|SPOJ|||1|\n|<ul><li>- [ ] Done</li></ul>|105|[Fibonacci Freeze](https://uva.onlinejudge.org/index.php?option=onlinejudge&page=show_problem&problem=436)|UVA|||1|\n|<ul><li>- [ ] Done</li></ul>|106|[COSTLY CHESS](http://www.spoj.com/problems/CCHESS/)|SPOJ|||1|\n|<ul><li>- [ ] Done</li></ul>|107|[Soft Drinking](http://codeforces.com/problemset/problem/151/A)|Codeforces||Codeforces Round #107 (Div. 2)|1|\n|<ul><li>- [ ] Done</li></ul>|108|[The 3n + 1 problem](https://uva.onlinejudge.org/index.php?option=onlinejudge&page=show_problem&problem=36)|UVA|||1|\n|<ul><li>- [ ] Done</li></ul>|109|[Longest Common Subsequence](https://uva.onlinejudge.org/index.php?option=onlinejudge&page=show_problem&problem=1346)|UVA|||1|\n|<ul><li>- [ ] Done</li></ul>|110|[MAXIMUM WOOD CUTTER](http://www.spoj.com/problems/MAXWOODS/)|SPOJ|||1|\n|<ul><li>- [ ] Done</li></ul>|111|[Divisibility](https://uva.onlinejudge.org/index.php?option=onlinejudge&page=show_problem&problem=977)|UVA|||1|\n|<ul><li>- [ ] Done</li></ul>|112|[Pearls](https://icpcarchive.ecs.baylor.edu/index.php?option=onlinejudge&page=show_problem&problem=676)|Live Archive|2002|Europe - Northwestern|1|\n|<ul><li>- [ ] Done</li></ul>|113|[Prime Permutations](http://www.codechef.com/problems/PPERM)|CodeChef|||1|\n|<ul><li>- [ ] Done</li></ul>|114|[Enormous Input Test](http://www.codechef.com/problems/INTEST)|CodeChef|||1|\n|<ul><li>- [ ] Done</li></ul>|115|[Boredom](http://codeforces.com/problemset/problem/455/A)|Codeforces||Codeforces Round #260 (Div. 1) & Codeforces Round #260 (Div. 2)|1|\n|<ul><li>- [ ] Done</li></ul>|116|[Aliens at the train](http://www.spoj.com/problems/ALIEN/)|SPOJ|||1|\n|<ul><li>- [ ] Done</li></ul>|117|[T-primes](http://codeforces.com/problemset/problem/230/B)|Codeforces||Codeforces Round #142 (Div. 2)|1|\n|<ul><li>- [ ] Done</li></ul>|118|[Ultra-Fast Mathematician](http://codeforces.com/problemset/problem/61/A)|Codeforces||Codeforces Beta Round #57 (Div. 2)|1|\n|<ul><li>- [ ] Done</li></ul>|119|[Making Change](http://acm.tju.edu.cn/toj/showp2768.html)|TJU|||1|\n|<ul><li>- [ ] Done</li></ul>|120|[Before an Exam](http://codeforces.com/problemset/problem/4/B)|Codeforces||Codeforces Beta Round #4 (Div. 2 Only)|1|\n|<ul><li>- [ ] Done</li></ul>|121|[The Bale Tower](http://acm.tju.edu.cn/toj/showp2769.html)|TJU|||1|\n|<ul><li>- [ ] Done</li></ul>|122|[Robot Instructions](https://uva.onlinejudge.org/index.php?option=onlinejudge&page=show_problem&problem=3947)|UVA|||1|\n|<ul><li>- [ ] Done</li></ul>|123|[Longest Palindrome](https://uva.onlinejudge.org/index.php?option=onlinejudge&page=show_problem&problem=2092)|UVA|||1|\n|<ul><li>- [ ] Done</li></ul>|124|[Optimal Array Multiplication Sequence](https://uva.onlinejudge.org/index.php?option=onlinejudge&page=show_problem&problem=284)|UVA|||1|\n|<ul><li>- [ ] Done</li></ul>|125|[Longest Run on a Snowboard](https://uva.onlinejudge.org/index.php?option=onlinejudge&page=show_problem&problem=1226)|UVA|||1|\n|<ul><li>- [ ] Done</li></ul>|126|[Coin Change](https://uva.onlinejudge.org/index.php?option=onlinejudge&page=show_problem&problem=615)|UVA|||1|\n|<ul><li>- [ ] Done</li></ul>|127|[Divisible Group Sums](https://uva.onlinejudge.org/index.php?option=onlinejudge&page=show_problem&problem=1557)|UVA|||1|\n|<ul><li>- [ ] Done</li></ul>|128|[Strategic Defense Initiative](https://uva.onlinejudge.org/index.php?option=onlinejudge&page=show_problem&problem=438)|UVA|||1|\n|<ul><li>- [ ] Done</li></ul>|129|[Vacation](https://uva.onlinejudge.org/index.php?option=onlinejudge&page=show_problem&problem=1133)|UVA|||1|\n|<ul><li>- [ ] Done</li></ul>|130|[Testing the CATCHER](https://uva.onlinejudge.org/index.php?option=onlinejudge&page=show_problem&problem=167)|UVA|||1|\n|<ul><li>- [ ] Done</li></ul>|131|[History Grading](https://uva.onlinejudge.org/index.php?option=onlinejudge&page=show_problem&problem=47)|UVA|||1|\n|<ul><li>- [ ] Done</li></ul>|132|[Stacking Boxes](https://uva.onlinejudge.org/index.php?option=onlinejudge&page=show_problem&problem=39)|UVA|||1|\n|<ul><li>- [ ] Done</li></ul>|133|[The Twin Towers](https://uva.onlinejudge.org/index.php?option=onlinejudge&page=show_problem&problem=1007)|UVA|||1|\n|<ul><li>- [ ] Done</li></ul>|134|[Compromise](https://uva.onlinejudge.org/index.php?option=onlinejudge&page=show_problem&problem=472)|UVA|||1|\n|<ul><li>- [ ] Done</li></ul>|135|[23 out of 5](https://uva.onlinejudge.org/index.php?option=onlinejudge&page=show_problem&problem=1285)|UVA|||1|\n|<ul><li>- [ ] Done</li></ul>|136|[Grandpa's Walk](https://icpcarchive.ecs.baylor.edu/index.php?option=onlinejudge&page=show_problem&problem=4049)|Live Archive|2012|Asia - Jakarta|1|\n|<ul><li>- [ ] Done</li></ul>|137|[Generations of Tribbles](https://icpcarchive.ecs.baylor.edu/index.php?option=onlinejudge&page=show_problem&problem=4529)|Live Archive|2013| \tNorth America - Pacific Northwest|1|\n|<ul><li>- [ ] Done</li></ul>|138|[Equal Sum Sets](https://icpcarchive.ecs.baylor.edu/index.php?option=onlinejudge&page=show_problem&problem=4673)|Live Archive|2013|Asia - Aizu|1|\n|<ul><li>- [ ] Done</li></ul>|139|[Cheap Travel](http://codeforces.com/problemset/problem/466/A)|Codeforces||Codeforces Round #266 (Div. 2)|1|\n|<ul><li>- [ ] Done</li></ul>|140|[k-Tree](http://codeforces.com/problemset/problem/431/C)|Codeforces||Codeforces Round #247 (Div. 2)|1|\n|<ul><li>- [ ] Done</li></ul>|141|[Flowers](http://codeforces.com/problemset/problem/474/D)|Codeforces||Codeforces Round #271 (Div. 2)|1|\n|<ul><li>- [ ] Done</li></ul>|142|[To the Max](http://poj.org/problem?id=1050)|PKU|||1|\n|<ul><li>- [ ] Done</li></ul>|143|[Membership Management](https://icpcarchive.ecs.baylor.edu/index.php?option=onlinejudge&page=show_problem&problem=3068)|Live Archive|2010|Asia - Tokyo|1|\n|<ul><li>- [ ] Done</li></ul>|144|[The Great Ball](http://www.spoj.com/problems/BYTESE2/)|SPOJ|||1|\n|<ul><li>- [ ] Done</li></ul>|145|[XOR Maximization](http://www.spoj.com/problems/XMAX/)|SPOJ|||1|\n|<ul><li>- [ ] Done</li></ul>|146|[Given Length and Sum of Digits...](http://codeforces.com/problemset/problem/489/C)|Codeforces||Codeforces Round #277.5 (Div. 2)|1|\n|<ul><li>- [ ] Done</li></ul>|147|[The Knapsack Problem](http://www.spoj.com/problems/KNAPSACK/)|SPOJ|||1|\n|<ul><li>- [ ] Done</li></ul>|148|[Wachovia Bank](http://www.spoj.com/problems/WACHOVIA/)|SPOJ|||1|\n|<ul><li>- [ ] Done</li></ul>|149|[Trip Planning](https://icpcarchive.ecs.baylor.edu/index.php?option=onlinejudge&page=show_problem&problem=2262)|Live Archive|2008|Asia - Taipei|1|\n|<ul><li>- [ ] Done</li></ul>|150|[Forming Quiz Teams](https://uva.onlinejudge.org/index.php?option=onlinejudge&page=show_problem&problem=1852)|UVA|||1|\n|<ul><li>- [ ] Done</li></ul>|151|[Woodcutters](http://codeforces.com/problemset/problem/545/C)|Codeforces||Codeforces Round #303 (Div. 2)|1|\n|<ul><li>- [ ] Done</li></ul>|152|[Number of Ways](http://codeforces.com/problemset/problem/466/C)|Codeforces||Codeforces Round #266 (Div. 2)|1|\n|<ul><li>- [ ] Done</li></ul>|153|[Histogram](http://www.spoj.com/problems/HIST2/)|SPOJ|||1|\n|<ul><li>- [ ] Done</li></ul>|154|[Two Substrings](http://codeforces.com/problemset/problem/550/A)|Codeforces||Codeforces Round #306 (Div. 2)|1|\n|<ul><li>- [ ] Done</li></ul>|155|[Quasi Binary](http://codeforces.com/problemset/problem/538/B)|Codeforces||Codeforces Round #300|1|\n|<ul><li>- [ ] Done</li></ul>|156|[Dreamoon and WiFi](http://codeforces.com/problemset/problem/476/B)|Codeforces||Codeforces Round #272 (Div. 2)|1|\n|<ul><li>- [ ] Done</li></ul>|157|[Fence](http://codeforces.com/problemset/problem/363/B)|Codeforces||Codeforces Round #211 (Div. 2)|1|\n|<ul><li>- [ ] Done</li></ul>|158|[Bridging signals](https://icpcarchive.ecs.baylor.edu/index.php?option=onlinejudge&page=show_problem&problem=932)|Live Archive|2003|Europe - Northwestern|1|\n|<ul><li>- [ ] Done</li></ul>|159|[ABC Path](http://www.spoj.com/problems/ABCPATH/)|SPOJ|||1|\n|<ul><li>- [ ] Done</li></ul>|160|[ShorterSuperSum](http://community.topcoder.com/stat?c=problem_statement&pm=10240)|TopCoder||SRM 467 - Div2 easy] (14151)|1|\n|<ul><li>- [ ] Done</li></ul>|161|[Omar](p?ID=1)|A2 Online Judge|||1|\n|<ul><li>- [ ] Done</li></ul>|162|[Chat room](http://codeforces.com/problemset/problem/58/A)|Codeforces||Codeforces Beta Round #54 (Div. 2)|1|\n|<ul><li>- [ ] Done</li></ul>|163|[Perfection](https://uva.onlinejudge.org/index.php?option=onlinejudge&page=show_problem&problem=318)|UVA|||1|\n|<ul><li>- [ ] Done</li></ul>|164|[Joysticks](http://codeforces.com/problemset/problem/651/A)|Codeforces||Codeforces Round #345 (Div. 2)|1|\n|<ul><li>- [ ] Done</li></ul>|165|[Kefa and First Steps](http://codeforces.com/problemset/problem/580/A)|Codeforces||Codeforces Round #321 (Div. 2)|1|\n|<ul><li>- [ ] Done</li></ul>|166|[Divisibility by Eight](http://codeforces.com/problemset/problem/550/C)|Codeforces||Codeforces Round #306 (Div. 2)|1|\n|<ul><li>- [ ] Done</li></ul>|167|[BerSU Ball](http://codeforces.com/problemset/problem/489/B)|Codeforces||Codeforces Round #277.5 (Div. 2)|1|\n|<ul><li>- [ ] Done</li></ul>|168|[Kuriyama Mirai's Stones](http://codeforces.com/problemset/problem/433/B)|Codeforces||Codeforces Round #248 (Div. 2)|1|\n|<ul><li>- [ ] Done</li></ul>|169|[Mashmokh and ACM](http://codeforces.com/problemset/problem/414/B)|Codeforces||Codeforces Round #240 (Div. 1) & Codeforces Round #240 (Div. 2)|1|\n|<ul><li>- [ ] Done</li></ul>|170|[Sereja and Suffixes](http://codeforces.com/problemset/problem/368/B)|Codeforces||Codeforces Round #215 (Div. 2)|1|\n|<ul><li>- [ ] Done</li></ul>|171|[Puzzles](http://codeforces.com/problemset/problem/337/A)|Codeforces||Codeforces Round #196 (Div. 2)|1|\n|<ul><li>- [ ] Done</li></ul>|172|[Flipping Game](http://codeforces.com/problemset/problem/327/A)|Codeforces||Codeforces Round #191 (Div. 2)|1|\n|<ul><li>- [ ] Done</li></ul>|173|[Ilya and Queries](http://codeforces.com/problemset/problem/313/B)|Codeforces||Codeforces Round #186 (Div. 2)|1|\n|<ul><li>- [ ] Done</li></ul>|174|[Binary Search Tree](https://icpcarchive.ecs.baylor.edu/index.php?option=onlinejudge&page=show_problem&problem=2848)|Live Archive|2010|Asia - Daejeon|1|\n|<ul><li>- [ ] Done</li></ul>|175|[Drazil and Factorial](http://codeforces.com/problemset/problem/515/C)|Codeforces||Codeforces Round #292 (Div. 2) & Codeforces Round #292 (Div. 1)|1|\n|<ul><li>- [ ] Done</li></ul>|176|[Cleaning Robot](http://www.spoj.com/problems/CLEANRBT/)|SPOJ|||1|\n|<ul><li>- [ ] Done</li></ul>|177|[Can you answer these queries I](http://www.spoj.com/problems/GSS1/)|SPOJ|||1|\n|<ul><li>- [ ] Done</li></ul>|178|[Twin Primes](https://uva.onlinejudge.org/index.php?option=onlinejudge&page=show_problem&problem=1335)|UVA|||1|\n|<ul><li>- [ ] Done</li></ul>|179|[Alphacode](https://icpcarchive.ecs.baylor.edu/index.php?option=onlinejudge&page=show_problem&problem=1079)|Live Archive|2004|North America - East Central NA|1|\n|<ul><li>- [ ] Done</li></ul>|180|[Positive or Negative](p?ID=348)|A2 Online Judge|||1|\n|<ul><li>- [ ] Done</li></ul>|181|[Prime Digital Roots](https://icpcarchive.ecs.baylor.edu/index.php?option=onlinejudge&page=show_problem&problem=248)|Live Archive|2001|South Pacific|1|\n|<ul><li>- [ ] Done</li></ul>|182|[Sums in a Triangle](http://www.codechef.com/problems/SUMTRIAN)|CodeChef|||1|\n|<ul><li>- [ ] Done</li></ul>|183|[The jackpot](https://uva.onlinejudge.org/index.php?option=onlinejudge&page=show_problem&problem=1625)|UVA|||1|\n|<ul><li>- [ ] Done</li></ul>|184|[New Year and Hurry](http://codeforces.com/problemset/problem/750/A)|Codeforces||Good Bye 2016|1|\n|<ul><li>- [ ] Done</li></ul>|185|[Cormen --- The Best Friend Of a Man](http://codeforces.com/problemset/problem/732/B)|Codeforces||Codeforces Round #377 (Div. 2)|1|\n|<ul><li>- [ ] Done</li></ul>|186|[Jill Rides Again](https://uva.onlinejudge.org/index.php?option=onlinejudge&page=show_problem&problem=448)|UVA|||1|\n|<ul><li>- [ ] Done</li></ul>|187|[Watermelon](http://codeforces.com/problemset/problem/4/A)|Codeforces||Codeforces Beta Round #4 (Div. 2 Only)|1|\n|<ul><li>- [ ] Done</li></ul>|188|[QAQ](http://codeforces.com/problemset/problem/894/A)|Codeforces||Codeforces Round #447 (Div. 2)|1|\n|<ul><li>- [ ] Done</li></ul>|189|[Simple Math](p?ID=347)|A2 Online Judge|||1|\n|<ul><li>- [ ] Done</li></ul>|190|[Anton and Danik](http://codeforces.com/problemset/problem/734/A)|Codeforces||Codeforces Round #379 (Div. 2)|1|\n|<ul><li>- [ ] Done</li></ul>|191|[DZY Loves Chessboard](http://codeforces.com/problemset/problem/445/A)|Codeforces||Codeforces Round #254 (Div. 2)|1|\n|<ul><li>- [ ] Done</li></ul>|192|[Princess Farida](http://www.spoj.com/problems/FARIDA/)|SPOJ|||1|\n|<ul><li>- [ ] Done</li></ul>|193|[Longest Common Substring](http://www.spoj.com/problems/LCS/)|SPOJ|||1|\n|<ul><li>- [ ] Done</li></ul>|194|[Buying Apples!](http://www.spoj.com/problems/ABA12C/)|SPOJ|||1|\n|<ul><li>- [ ] Done</li></ul>|195|[Trees](https://icpcarchive.ecs.baylor.edu/index.php?option=onlinejudge&page=show_problem&problem=1009)|Live Archive|2004|South Pacific|1|\n|<ul><li>- [ ] Done</li></ul>|196|[Tiling a Grid With Dominoes](https://icpcarchive.ecs.baylor.edu/index.php?option=onlinejudge&page=show_problem&problem=1918)|Live Archive|2007|North America - Greater NY|1|\n|<ul><li>- [ ] Done</li></ul>|197|[Bicoloring](https://uva.onlinejudge.org/index.php?option=onlinejudge&page=show_problem&problem=945)|UVA|||1|\n|<ul><li>- [ ] Done</li></ul>|198|[I Can Guess the Data Structure!](https://uva.onlinejudge.org/index.php?option=onlinejudge&page=show_problem&problem=3146)|UVA|||1|\n|<ul><li>- [ ] Done</li></ul>|199|[Prime Path](https://icpcarchive.ecs.baylor.edu/index.php?option=onlinejudge&page=show_problem&problem=1640)|Live Archive|2006|Europe - Northwestern|1|\n|<ul><li>- [ ] Done</li></ul>|200|[Party](http://codeforces.com/problemset/problem/115/A)|Codeforces||Codeforces Beta Round #87 (Div. 1 Only) & Codeforces Beta Round #87 (Div. 2 Only)|1|\n|<ul><li>- [ ] Done</li></ul>|201|[Exploring Pyramids](https://icpcarchive.ecs.baylor.edu/index.php?option=onlinejudge&page=show_problem&problem=1517)|Live Archive|2005|Europe - Northeastern|1|\n|<ul><li>- [ ] Done</li></ul>|202|[Largest Rectangle in a Histogram](http://www.spoj.com/problems/HISTOGRA/)|SPOJ|||1|\n|<ul><li>- [ ] Done</li></ul>|203|[Mice and Maze](https://icpcarchive.ecs.baylor.edu/index.php?option=onlinejudge&page=show_problem&problem=426)|Live Archive|2001|Europe - Southwestern|1|\n|<ul><li>- [ ] Done</li></ul>|204|[Petya and Strings](http://codeforces.com/problemset/problem/112/A)|Codeforces||Codeforces Beta Round #85 (Div. 2 Only)|1|\n|<ul><li>- [ ] Done</li></ul>|205|[What Goes Up](https://uva.onlinejudge.org/index.php?option=onlinejudge&page=show_problem&problem=422)|UVA|||1|\n|<ul><li>- [ ] Done</li></ul>|206|[Permutation Arrays](https://uva.onlinejudge.org/index.php?option=onlinejudge&page=show_problem&problem=423)|UVA|||1|\n|<ul><li>- [ ] Done</li></ul>|207|[I-Keyboard](http://www.spoj.com/problems/IKEYB/)|SPOJ|||2|\n|<ul><li>- [ ] Done</li></ul>|208|[Card Sorting](http://www.spoj.com/problems/MCARDS/)|SPOJ|||2|\n|<ul><li>- [ ] Done</li></ul>|209|[Point Connection Game in a Circle](http://www.spoj.com/problems/MCIRGAME/)|SPOJ|||2|\n|<ul><li>- [ ] Done</li></ul>|210|[Decoding Morse Sequences](http://www.spoj.com/problems/MORSE/)|SPOJ|||2|\n|<ul><li>- [ ] Done</li></ul>|211|[Counting The Way of Bracket Replacement](http://www.spoj.com/problems/MREPLBRC/)|SPOJ|||2|\n|<ul><li>- [ ] Done</li></ul>|212|[String problem](http://www.spoj.com/problems/MSTRING/)|SPOJ|||2|\n|<ul><li>- [ ] Done</li></ul>|213|[Partition](http://www.spoj.com/problems/PARTIT/)|SPOJ|||2|\n|<ul><li>- [ ] Done</li></ul>|214|[Particular Palindromes](http://www.spoj.com/problems/PARTPALI/)|SPOJ|||2|\n|<ul><li>- [ ] Done</li></ul>|215|[Balancing the Stone](http://www.spoj.com/problems/SCALES/)|SPOJ|||2|\n|<ul><li>- [ ] Done</li></ul>|216|[String Shuffle](http://www.spoj.com/problems/SSHUFFLE/)|SPOJ|||2|\n|<ul><li>- [ ] Done</li></ul>|217|[Street](http://www.spoj.com/problems/STREET/)|SPOJ|||2|\n|<ul><li>- [ ] Done</li></ul>|218|[Three-coloring of binary trees](http://www.spoj.com/problems/THREECOL/)|SPOJ|||2|\n|<ul><li>- [ ] Done</li></ul>|219|[Up Subsequence](http://www.spoj.com/problems/UPSUB/)|SPOJ|||2|\n|<ul><li>- [ ] Done</li></ul>|220|[Dab of Backpack](http://www.spoj.com/problems/BACKPACK/)|SPOJ|||2|\n|<ul><li>- [ ] Done</li></ul>|221|[Dice](http://www.spoj.com/problems/AE2A/)|SPOJ|||2|\n|<ul><li>- [ ] Done</li></ul>|222|[JEDNAKOST](http://www.spoj.com/problems/JEDNAKOS/)|SPOJ|||2|\n|<ul><li>- [ ] Done</li></ul>|223|[Feline Olympics - Mouseball](http://www.spoj.com/problems/MBALL/)|SPOJ|||2|\n|<ul><li>- [ ] Done</li></ul>|224|[Catch Fish](http://www.spoj.com/problems/MFISH/)|SPOJ|||2|\n|<ul><li>- [ ] Done</li></ul>|225|[Tourist](http://www.spoj.com/problems/TOURIST/)|SPOJ|||2|\n|<ul><li>- [ ] Done</li></ul>|226|[Con-Junctions](http://www.spoj.com/problems/VOCV/)|SPOJ|||2|\n|<ul><li>- [ ] Done</li></ul>|227|[Yoda Goes Palindromic !](http://www.spoj.com/problems/YODA/)|SPOJ|||2|\n|<ul><li>- [ ] Done</li></ul>|228|[Esferas](http://www.spoj.com/problems/PRUBALL/)|SPOJ|||2|\n|<ul><li>- [ ] Done</li></ul>|229|[Temptation Island](http://www.spoj.com/problems/TEMPTISL/)|SPOJ|||2|\n|<ul><li>- [ ] Done</li></ul>|230|[Interesting number](http://www.spoj.com/problems/INUMBER/)|SPOJ|||2|\n|<ul><li>- [ ] Done</li></ul>|231|[Sorting is not easy](http://www.spoj.com/problems/LSORT/)|SPOJ|||2|\n|<ul><li>- [ ] Done</li></ul>|232|[Musketeers](http://www.spoj.com/problems/MUSKET/)|SPOJ|||2|\n|<ul><li>- [ ] Done</li></ul>|233|[The Courier](http://www.spoj.com/problems/COURIER/)|SPOJ|||2|\n|<ul><li>- [ ] Done</li></ul>|234|[Deliver pizza](http://www.spoj.com/problems/DP/)|SPOJ|||2|\n|<ul><li>- [ ] Done</li></ul>|235|[Counting K-Rectangle](http://www.spoj.com/problems/KRECT/)|SPOJ|||2|\n|<ul><li>- [ ] Done</li></ul>|236|[Making A Budget](http://www.spoj.com/problems/MKBUDGET/)|SPOJ|||2|\n|<ul><li>- [ ] Done</li></ul>|237|[Menu](http://www.spoj.com/problems/MENU/)|SPOJ|||2|\n|<ul><li>- [ ] Done</li></ul>|238|[Nested Dolls](http://www.spoj.com/problems/MDOLLS/)|SPOJ|||2|\n|<ul><li>- [ ] Done</li></ul>|239|[NERED](http://www.spoj.com/problems/MNERED/)|SPOJ|||2|\n|<ul><li>- [ ] Done</li></ul>|240|[Another Tree Problem ](http://www.spoj.com/problems/MTREE/)|SPOJ|||2|\n|<ul><li>- [ ] Done</li></ul>|241|[Another Box Problem](http://www.spoj.com/problems/QCJ2/)|SPOJ|||2|\n|<ul><li>- [ ] Done</li></ul>|242|[Tiling](https://uva.onlinejudge.org/index.php?option=onlinejudge&page=show_problem&problem=1300)|UVA|||2|\n|<ul><li>- [ ] Done</li></ul>|243|[Distinct Subsequences](https://uva.onlinejudge.org/index.php?option=onlinejudge&page=show_problem&problem=1010)|UVA|||2|\n|<ul><li>- [ ] Done</li></ul>|244|[Queue](https://uva.onlinejudge.org/index.php?option=onlinejudge&page=show_problem&problem=1069)|UVA|||2|\n|<ul><li>- [ ] Done</li></ul>|245|[Jugs](https://uva.onlinejudge.org/index.php?option=onlinejudge&page=show_problem&problem=512)|UVA|||2|\n|<ul><li>- [ ] Done</li></ul>|246|[Game Show Math](https://uva.onlinejudge.org/index.php?option=onlinejudge&page=show_problem&problem=1341)|UVA|||2|\n|<ul><li>- [ ] Done</li></ul>|247|[Another Problem on Strings](http://codeforces.com/problemset/problem/165/C)|Codeforces||Codeforces Round #112 (Div. 2)|2|\n|<ul><li>- [ ] Done</li></ul>|248|[Password](http://codeforces.com/problemset/problem/126/B)|Codeforces||Codeforces Beta Round #93 (Div. 1 Only) & Codeforces Beta Round #93 (Div. 2 Only)|2|\n|<ul><li>- [ ] Done</li></ul>|249|[Caesar's Legions](http://codeforces.com/problemset/problem/118/D)|Codeforces||Codeforces Beta Round #89 (Div. 2)|2|\n|<ul><li>- [ ] Done</li></ul>|250|[Bar Codes](https://uva.onlinejudge.org/index.php?option=onlinejudge&page=show_problem&problem=1662)|UVA|||2|\n|<ul><li>- [ ] Done</li></ul>|251|[Chest of Drawers](https://uva.onlinejudge.org/index.php?option=onlinejudge&page=show_problem&problem=2415)|UVA|||2|\n|<ul><li>- [ ] Done</li></ul>|252|[Marks Distribution](https://uva.onlinejudge.org/index.php?option=onlinejudge&page=show_problem&problem=1851)|UVA|||2|\n|<ul><li>- [ ] Done</li></ul>|253|[Flight Planner](https://uva.onlinejudge.org/index.php?option=onlinejudge&page=show_problem&problem=1278)|UVA|||2|\n|<ul><li>- [ ] Done</li></ul>|254|[Ministry](http://acm.timus.ru/problem.aspx?space=1&num=1029)|Timus|||2|\n|<ul><li>- [ ] Done</li></ul>|255|[Railway Tickets](http://acm.timus.ru/problem.aspx?space=1&num=1031)|Timus|||2|\n|<ul><li>- [ ] Done</li></ul>|256|[Anniversary Party](http://acm.timus.ru/problem.aspx?space=1&num=1039)|Timus|||2|\n|<ul><li>- [ ] Done</li></ul>|257|[Segments](http://acm.timus.ru/problem.aspx?space=1&num=1078)|Timus|||2|\n|<ul><li>- [ ] Done</li></ul>|258|[False Mirrors](http://acm.timus.ru/problem.aspx?space=1&num=1152)|Timus|||2|\n|<ul><li>- [ ] Done</li></ul>|259|[Bicolored Horses](http://acm.timus.ru/problem.aspx?space=1&num=1167)|Timus|||2|\n|<ul><li>- [ ] Done</li></ul>|260|[Brackets Sequence](http://acm.timus.ru/problem.aspx?space=1&num=1183)|Timus|||2|\n|<ul><li>- [ ] Done</li></ul>|261|[Nudnik Photographer](http://acm.timus.ru/problem.aspx?space=1&num=1260)|Timus|||2|\n|<ul><li>- [ ] Done</li></ul>|262|[Threeprime Numbers](http://acm.timus.ru/problem.aspx?space=1&num=1586)|Timus|||2|\n|<ul><li>- [ ] Done</li></ul>|263|[BATMAN1](http://www.spoj.com/problems/BAT1/)|SPOJ|||2|\n|<ul><li>- [ ] Done</li></ul>|264|[BATMAN2](http://www.spoj.com/problems/BAT2/)|SPOJ|||2|\n|<ul><li>- [ ] Done</li></ul>|265|[Leaves](http://www.spoj.com/problems/NKLEAVES/)|SPOJ|||2|\n|<ul><li>- [ ] Done</li></ul>|266|[Problem 3](http://www.spoj.com/problems/NOVICE43/)|SPOJ|||2|\n|<ul><li>- [ ] Done</li></ul>|267|[Chop Ahoy! Revisited!](https://icpcarchive.ecs.baylor.edu/index.php?option=onlinejudge&page=show_problem&problem=1541)|Live Archive|2005|Africa/Middle East - Arab and North Africa|2|\n|<ul><li>- [ ] Done</li></ul>|268|[Mosaic](https://icpcarchive.ecs.baylor.edu/index.php?option=onlinejudge&page=show_problem&problem=2609)|Live Archive|2009|North America - Southeast USA|2|\n|<ul><li>- [ ] Done</li></ul>|269|[BATMAN3](http://www.spoj.com/problems/BAT3/)|SPOJ|||2|\n|<ul><li>- [ ] Done</li></ul>|270|[Drop the Triples](https://icpcarchive.ecs.baylor.edu/index.php?option=onlinejudge&page=show_problem&problem=1931)|Live Archive|2007|Latin America - South America|2|\n|<ul><li>- [ ] Done</li></ul>|271|[Always on the run](https://uva.onlinejudge.org/index.php?option=onlinejudge&page=show_problem&problem=531)|UVA|||2|\n|<ul><li>- [ ] Done</li></ul>|272|[Bit Mask](https://uva.onlinejudge.org/index.php?option=onlinejudge&page=show_problem&problem=1659)|UVA|||2|\n|<ul><li>- [ ] Done</li></ul>|273|[Space Elevator](http://poj.org/problem?id=2392)|PKU|||2|\n|<ul><li>- [ ] Done</li></ul>|274|[Mobile Service](http://www.spoj.com/problems/SERVICE/)|SPOJ|||2|\n|<ul><li>- [ ] Done</li></ul>|275|[Optimal Binary Search Tree](https://uva.onlinejudge.org/index.php?option=onlinejudge&page=show_problem&problem=1245)|UVA|||2|\n|<ul><li>- [ ] Done</li></ul>|276|[Ice Sculptures](http://codeforces.com/problemset/problem/158/D)|Codeforces||VK Cup 2012 Qualification Round 1|2|\n|<ul><li>- [ ] Done</li></ul>|277|[Little Elephant and Painting](http://www.codechef.com/problems/LEPAINT)|CodeChef|||2|\n|<ul><li>- [ ] Done</li></ul>|278|[Chopsticks](https://uva.onlinejudge.org/index.php?option=onlinejudge&page=show_problem&problem=1212)|UVA|||2|\n|<ul><li>- [ ] Done</li></ul>|279|[Beautiful People](http://acm.sgu.ru/problem.php?contest=0&problem=199)|SGU|||2|\n|<ul><li>- [ ] Done</li></ul>|280|[Erdos Numbers](https://icpcarchive.ecs.baylor.edu/index.php?option=onlinejudge&page=show_problem&problem=206)|Live Archive|2000|Europe - Northwestern & Europe - Southwestern & Europe - Mid-Central|2|\n|<ul><li>- [ ] Done</li></ul>|281|[Weights and Measures](https://uva.onlinejudge.org/index.php?option=onlinejudge&page=show_problem&problem=1095)|UVA|||2|\n|<ul><li>- [ ] Done</li></ul>|282|[Handball](https://uva.onlinejudge.org/index.php?option=onlinejudge&page=show_problem&problem=4663)|UVA|||2|\n|<ul><li>- [ ] Done</li></ul>|283|[String to Palindrome](https://uva.onlinejudge.org/index.php?option=onlinejudge&page=show_problem&problem=1680)|UVA|||2|\n|<ul><li>- [ ] Done</li></ul>|284|[Black-White Grid](https://icpcarchive.ecs.baylor.edu/index.php?option=onlinejudge&page=show_problem&problem=1674)|Live Archive|2006|Asia - Hanoi|2|\n|<ul><li>- [ ] Done</li></ul>|285|[George and Job](http://codeforces.com/problemset/problem/467/C)|Codeforces||Codeforces Round #267 (Div. 2)|2|\n|<ul><li>- [ ] Done</li></ul>|286|[Cow Frisbee Team](http://acm.tju.edu.cn/toj/showp3208.html)|TJU|||2|\n|<ul><li>- [ ] Done</li></ul>|287|[String Partition](https://uva.onlinejudge.org/index.php?option=onlinejudge&page=show_problem&problem=2225)|UVA|||2|\n|<ul><li>- [ ] Done</li></ul>|288|[Tower of Cubes](https://uva.onlinejudge.org/index.php?option=onlinejudge&page=show_problem&problem=992)|UVA|||2|\n|<ul><li>- [ ] Done</li></ul>|289|[Pebble Solitaire](https://uva.onlinejudge.org/index.php?option=onlinejudge&page=show_problem&problem=1592)|UVA|||2|\n|<ul><li>- [ ] Done</li></ul>|290|[String Computer](https://uva.onlinejudge.org/index.php?option=onlinejudge&page=show_problem&problem=100)|UVA|||2|\n|<ul><li>- [ ] Done</li></ul>|291|[Make Palindrome](https://uva.onlinejudge.org/index.php?option=onlinejudge&page=show_problem&problem=1394)|UVA|||2|\n|<ul><li>- [ ] Done</li></ul>|292|[String Distance and Transform Process](https://uva.onlinejudge.org/index.php?option=onlinejudge&page=show_problem&problem=467)|UVA|||2|\n|<ul><li>- [ ] Done</li></ul>|293|[Again Palindrome](https://uva.onlinejudge.org/index.php?option=onlinejudge&page=show_problem&problem=1558)|UVA|||2|\n|<ul><li>- [ ] Done</li></ul>|294|[Slurpys](https://uva.onlinejudge.org/index.php?option=onlinejudge&page=show_problem&problem=320)|UVA|||2|\n|<ul><li>- [ ] Done</li></ul>|295|[The Marriage Interview :-)](https://uva.onlinejudge.org/index.php?option=onlinejudge&page=show_problem&problem=1387)|UVA|||2|\n|<ul><li>- [ ] Done</li></ul>|296|[Simple Minded Hashing](https://uva.onlinejudge.org/index.php?option=onlinejudge&page=show_problem&problem=1853)|UVA|||2|\n|<ul><li>- [ ] Done</li></ul>|297|[Murcia's Skyline](https://uva.onlinejudge.org/index.php?option=onlinejudge&page=show_problem&problem=2890)|UVA|||2|\n|<ul><li>- [ ] Done</li></ul>|298|[Diving for Gold](https://uva.onlinejudge.org/index.php?option=onlinejudge&page=show_problem&problem=931)|UVA|||2|\n|<ul><li>- [ ] Done</li></ul>|299|[Trouble of 13-Dots](https://uva.onlinejudge.org/index.php?option=onlinejudge&page=show_problem&problem=1760)|UVA|||2|\n|<ul><li>- [ ] Done</li></ul>|300|[Longest Match](https://uva.onlinejudge.org/index.php?option=onlinejudge&page=show_problem&problem=1041)|UVA|||2|\n|<ul><li>- [ ] Done</li></ul>|301|[Sum of Different Primes](https://uva.onlinejudge.org/index.php?option=onlinejudge&page=show_problem&problem=3654)|UVA|||2|\n|<ul><li>- [ ] Done</li></ul>|302|[Walking on the Safe Side](https://uva.onlinejudge.org/index.php?option=onlinejudge&page=show_problem&problem=766)|UVA|||2|\n|<ul><li>- [ ] Done</li></ul>|303|[Pebbles](https://icpcarchive.ecs.baylor.edu/index.php?option=onlinejudge&page=show_problem&problem=1996)|Live Archive|2007|North America - Pacific Northwest & North America - Southern California|2|\n|<ul><li>- [ ] Done</li></ul>|304|[Game of Sum](https://uva.onlinejudge.org/index.php?option=onlinejudge&page=show_problem&problem=1832)|UVA|||2|\n|<ul><li>- [ ] Done</li></ul>|305|[Fibonacci System](https://icpcarchive.ecs.baylor.edu/index.php?option=onlinejudge&page=show_problem&problem=2377)|Live Archive|2008|Europe - Northeastern|2|\n|<ul><li>- [ ] Done</li></ul>|306|[Painting the balls](http://acm.sgu.ru/problem.php?contest=0&problem=183)|SGU|||2|\n|<ul><li>- [ ] Done</li></ul>|307|[Destruction Cannon](https://www.urionlinejudge.com.br/judge/en/problems/view/1288)|URI|||2|\n|<ul><li>- [ ] Done</li></ul>|308|[Travelling Salesman](https://uva.onlinejudge.org/index.php?option=onlinejudge&page=show_problem&problem=1643)|UVA|||2|\n|<ul><li>- [ ] Done</li></ul>|309|[Rain](http://www.spoj.com/problems/RAIN3/)|SPOJ|||2|\n|<ul><li>- [ ] Done</li></ul>|310|[Fibo](p?ID=150)|A2 Online Judge|||2|\n|<ul><li>- [ ] Done</li></ul>|311|[Boxes](https://uva.onlinejudge.org/index.php?option=onlinejudge&page=show_problem&problem=1944)|UVA|||2|\n|<ul><li>- [ ] Done</li></ul>|312|[Counting binary strings](http://www.spoj.com/problems/STRCOUNT/)|SPOJ|||2|\n|<ul><li>- [ ] Done</li></ul>|313|[Motoboy](https://www.urionlinejudge.com.br/judge/en/problems/view/1286)|URI|||2|\n|<ul><li>- [ ] Done</li></ul>|314|[Color the Fence](http://codeforces.com/problemset/problem/349/B)|Codeforces||Codeforces Round #202 (Div. 2)|2|\n|<ul><li>- [ ] Done</li></ul>|315|[KTV](https://uva.onlinejudge.org/index.php?option=onlinejudge&page=show_problem&problem=2159)|UVA|||2|\n|<ul><li>- [ ] Done</li></ul>|316|[Tight Words](https://uva.onlinejudge.org/index.php?option=onlinejudge&page=show_problem&problem=1022)|UVA|||2|\n|<ul><li>- [ ] Done</li></ul>|317|[Square](https://uva.onlinejudge.org/index.php?option=onlinejudge&page=show_problem&problem=1305)|UVA|||2|\n|<ul><li>- [ ] Done</li></ul>|318|[Soldier and Number Game](http://codeforces.com/problemset/problem/546/D)|Codeforces||Codeforces Round #304 (Div. 2)|2|\n|<ul><li>- [ ] Done</li></ul>|319|[1807](http://www.spoj.com/problems/SMILEY1807/)|SPOJ|||2|\n|<ul><li>- [ ] Done</li></ul>|320|[Geometric Progression](http://codeforces.com/problemset/problem/567/C)|Codeforces||Codeforces Round #Pi (Div. 2)|2|\n|<ul><li>- [ ] Done</li></ul>|321|[Land Acquisition](http://www.spoj.com/problems/ACQUIRE/)|SPOJ|||2|\n|<ul><li>- [ ] Done</li></ul>|322|[Restoring Password](http://codeforces.com/problemset/problem/94/A)|Codeforces||Codeforces Beta Round #76 (Div. 2 Only)|2|\n|<ul><li>- [ ] Done</li></ul>|323|[New Year and Domino](http://codeforces.com/problemset/problem/611/C)|Codeforces||Good Bye 2015|2|\n|<ul><li>- [ ] Done</li></ul>|324|[Chain Reaction](http://codeforces.com/problemset/problem/607/A)|Codeforces||Codeforces Round #336 (Div. 1) & Codeforces Round #336 (Div. 2)|2|\n|<ul><li>- [ ] Done</li></ul>|325|[Alternative Thinking](http://codeforces.com/problemset/problem/603/A)|Codeforces||Codeforces Round #334 (Div. 1) & Codeforces Round #334 (Div. 2)|2|\n|<ul><li>- [ ] Done</li></ul>|326|[Approximating a Constant Range](http://codeforces.com/problemset/problem/602/B)|Codeforces||Codeforces Round #333 (Div. 2)|2|\n|<ul><li>- [ ] Done</li></ul>|327|[Modulo Sum](http://codeforces.com/problemset/problem/577/B)|Codeforces||Codeforces Round #319 (Div. 2)|2|\n|<ul><li>- [ ] Done</li></ul>|328|[Kyoya and Colored Balls](http://codeforces.com/problemset/problem/553/A)|Codeforces||Codeforces Round #309 (Div. 1) & Codeforces Round #309 (Div. 2)|2|\n|<ul><li>- [ ] Done</li></ul>|329|[Covered Path](http://codeforces.com/problemset/problem/534/B)|Codeforces||Codeforces Round #298 (Div. 2)|2|\n|<ul><li>- [ ] Done</li></ul>|330|[Photo to Remember](http://codeforces.com/problemset/problem/522/B)|Codeforces||VK Cup 2015 - Qualification Round 1|2|\n|<ul><li>- [ ] Done</li></ul>|331|[Reposts](http://codeforces.com/problemset/problem/522/A)|Codeforces||VK Cup 2015 - Qualification Round 1|2|\n|<ul><li>- [ ] Done</li></ul>|332|[Mr. Kitayuta's Colorful Graph](http://codeforces.com/problemset/problem/506/D)|Codeforces||Codeforces Round #286 (Div. 1) & Codeforces Round #286 (Div. 2) & Codeforces Round #286 (Div. 1) & Codeforces Round #286 (Div. 2)|2|\n|<ul><li>- [ ] Done</li></ul>|333|[DZY Loves Sequences](http://codeforces.com/problemset/problem/446/A)|Codeforces||Codeforces Round #255 (Div. 1) & Codeforces Round #255 (Div. 2)|2|\n|<ul><li>- [ ] Done</li></ul>|334|[Inna and Choose Options](http://codeforces.com/problemset/problem/400/A)|Codeforces||Codeforces Round #234 (Div. 2)|2|\n|<ul><li>- [ ] Done</li></ul>|335|[Polo the Penguin and Matrix](http://codeforces.com/problemset/problem/289/B)|Codeforces||Codeforces Round #177 (Div. 2)|2|\n|<ul><li>- [ ] Done</li></ul>|336|[Mr. Kitayuta's Gift](http://codeforces.com/problemset/problem/505/A)|Codeforces||Codeforces Round #286 (Div. 1) & Codeforces Round #286 (Div. 2) & Codeforces Round #286 (Div. 1) & Codeforces Round #286 (Div. 2)|2|\n|<ul><li>- [ ] Done</li></ul>|337|[Dancing Cows](http://www.spoj.com/problems/DCOWS/)|SPOJ|||2|\n|<ul><li>- [ ] Done</li></ul>|338|[Vasya and String](http://codeforces.com/problemset/problem/676/C)|Codeforces||Codeforces Round #354 (Div. 2)|2|\n|<ul><li>- [ ] Done</li></ul>|339|[Bing it](https://icpcarchive.ecs.baylor.edu/index.php?option=onlinejudge&page=show_problem&problem=2765)|Live Archive|2009|Asia - Harbin|2|\n|<ul><li>- [ ] Done</li></ul>|340|[Wooden Sticks](http://www.spoj.com/problems/MSTICK/)|SPOJ|||2|\n|<ul><li>- [ ] Done</li></ul>|341|[Sequence](https://icpcarchive.ecs.baylor.edu/index.php?option=onlinejudge&page=show_problem&problem=4813)|Live Archive|2014|Asia - Kuala Lumpur|2|\n|<ul><li>- [ ] Done</li></ul>|342|[Concert Tour](https://icpcarchive.ecs.baylor.edu/index.php?option=onlinejudge&page=show_problem&problem=4865)|Live Archive|2014|Asia - Bangkok|2|\n|<ul><li>- [ ] Done</li></ul>|343|[Shopping](https://icpcarchive.ecs.baylor.edu/index.php?option=onlinejudge&page=show_problem&problem=4846)|Live Archive|2014|Asia - Tokyo|2|\n|<ul><li>- [ ] Done</li></ul>|344|[Maximum sum on a torus](https://uva.onlinejudge.org/index.php?option=onlinejudge&page=show_problem&problem=1768)|UVA|||2|\n|<ul><li>- [ ] Done</li></ul>|345|[Maximum Sub-sequence Product](https://uva.onlinejudge.org/index.php?option=onlinejudge&page=show_problem&problem=728)|UVA|||2|\n|<ul><li>- [ ] Done</li></ul>|346|[Another Longest Increasing Subsequence Problem](http://www.spoj.com/problems/LIS2/)|SPOJ|||2|\n|<ul><li>- [ ] Done</li></ul>|347|[Hard problem](http://codeforces.com/problemset/problem/706/C)|Codeforces||Codeforces Round #367 (Div. 2)|2|\n|<ul><li>- [ ] Done</li></ul>|348|[Triangular N-Queens Problem](https://icpcarchive.ecs.baylor.edu/index.php?option=onlinejudge&page=show_problem&problem=1573)|Live Archive|2006|North America - Greater NY|2|\n|<ul><li>- [ ] Done</li></ul>|349|[Pay the Price](https://uva.onlinejudge.org/index.php?option=onlinejudge&page=show_problem&problem=1254)|UVA|||2|\n|<ul><li>- [ ] Done</li></ul>|350|[Making Change](https://uva.onlinejudge.org/index.php?option=onlinejudge&page=show_problem&problem=102)|UVA|||2|\n|<ul><li>- [ ] Done</li></ul>|351|[Functions again](http://codeforces.com/problemset/problem/788/A)|Codeforces||Codeforces Round #407 (Div. 1) & Codeforces Round #407 (Div. 2)|2|\n|<ul><li>- [ ] Done</li></ul>|352|[Tennis Championship](http://codeforces.com/problemset/problem/735/C)|Codeforces||Codeforces Round #382 (Div. 2) & Codeforces Round #382 (Div. 1)|2|\n|<ul><li>- [ ] Done</li></ul>|353|[Timofey and a tree](http://codeforces.com/problemset/problem/763/A)|Codeforces||Codeforces Round #395 (Div. 1) & Codeforces Round #395 (Div. 2)|2|\n|<ul><li>- [ ] Done</li></ul>|354|[Pride](http://codeforces.com/problemset/problem/891/A)|Codeforces||Codeforces Round #446 (Div. 1) & Codeforces Round #446 (Div. 2)|2|\n|<ul><li>- [ ] Done</li></ul>|355|[Game of Credit Cards](http://codeforces.com/problemset/problem/777/B)|Codeforces||Codeforces Round #401 (Div. 2)|2|\n|<ul><li>- [ ] Done</li></ul>|356|[Journey](http://codeforces.com/problemset/problem/839/C)|Codeforces||Codeforces Round #428 (Div. 2)|2|\n|<ul><li>- [ ] Done</li></ul>|357|[A DP Problem](https://icpcarchive.ecs.baylor.edu/index.php?option=onlinejudge&page=show_problem&problem=973)|Live Archive|2003|Asia - Tehran|2|\n|<ul><li>- [ ] Done</li></ul>|358|[Polo the Penguin and Strings](http://codeforces.com/problemset/problem/288/A)|Codeforces||Codeforces Round #177 (Div. 1) & Codeforces Round #177 (Div. 2)|2|\n|<ul><li>- [ ] Done</li></ul>|359|[Ra-One Numbers](http://www.spoj.com/problems/RAONE/)|SPOJ|||2|\n|<ul><li>- [ ] Done</li></ul>|360|[G-One Numbers](http://www.spoj.com/problems/GONE/)|SPOJ|||2|\n|<ul><li>- [ ] Done</li></ul>|361|[LUCIFER Number](http://www.spoj.com/problems/LUCIFER/)|SPOJ|||2|\n|<ul><li>- [ ] Done</li></ul>|362|[Squares](https://uva.onlinejudge.org/index.php?option=onlinejudge&page=show_problem&problem=2402)|UVA|||2|\n|<ul><li>- [ ] Done</li></ul>|363|[Ferry Loading](https://uva.onlinejudge.org/index.php?option=onlinejudge&page=show_problem&problem=1202)|UVA|||2|\n|<ul><li>- [ ] Done</li></ul>|364|[Unnatural Conditions](http://codeforces.com/problemset/problem/1028/B)|Codeforces||AIM Tech Round 5 (rated, Div. 1 + Div. 2)|2|\n|<ul><li>- [ ] Done</li></ul>|365|[Sinking Ship](http://codeforces.com/problemset/problem/63/A)|Codeforces||Codeforces Beta Round #59 (Div. 2)|2|\n|<ul><li>- [ ] Done</li></ul>|366|[Quadratic Equation](http://www.spoj.com/problems/QUADRATE/)|SPOJ|||2|\n|<ul><li>- [ ] Done</li></ul>|367|[Candy (Again)](http://www.spoj.com/problems/FCANDY/)|SPOJ|||3|\n|<ul><li>- [ ] Done</li></ul>|368|[Slikar](http://www.spoj.com/problems/SLIKAR/)|SPOJ|||3|\n|<ul><li>- [ ] Done</li></ul>|369|[Palindromic Subsequence](https://uva.onlinejudge.org/index.php?option=onlinejudge&page=show_problem&problem=2399)|UVA|||3|\n|<ul><li>- [ ] Done</li></ul>|370|[String reduction](http://www.spoj.com/problems/STREDUCE/)|SPOJ|||3|\n|<ul><li>- [ ] Done</li></ul>|371|[Paid Roads](http://www.spoj.com/problems/MMINPAID/)|SPOJ|||3|\n|<ul><li>- [ ] Done</li></ul>|372|[Common Subsequences](http://www.spoj.com/problems/CSUBSEQS/)|SPOJ|||3|\n|<ul><li>- [ ] Done</li></ul>|373|[Even Palindrome](http://www.spoj.com/problems/PALDR/)|SPOJ|||3|\n|<ul><li>- [ ] Done</li></ul>|374|[The Secret of an Aerolite](http://www.spoj.com/problems/AEROLITE/)|SPOJ|||3|\n|<ul><li>- [ ] Done</li></ul>|375|[Hackers' Crackdown](https://uva.onlinejudge.org/index.php?option=onlinejudge&page=show_problem&problem=2925)|UVA|||3|\n|<ul><li>- [ ] Done</li></ul>|376|[Minus Operation](http://www.spoj.com/problems/MINUS/)|SPOJ|||3|\n|<ul><li>- [ ] Done</li></ul>|377|[Partition the sequence](http://www.spoj.com/problems/SEQPAR/)|SPOJ|||3|\n|<ul><li>- [ ] Done</li></ul>|378|[Traveling by Stagecoach](http://www.spoj.com/problems/TRSTAGE/)|SPOJ|||3|\n|<ul><li>- [ ] Done</li></ul>|379|[Maximum Triangle Area](http://www.spoj.com/problems/MTRIAREA/)|SPOJ|||3|\n|<ul><li>- [ ] Done</li></ul>|380|[Polygon](http://www.spoj.com/problems/MPOLY/)|SPOJ|||3|\n|<ul><li>- [ ] Done</li></ul>|381|[Help Bob](http://www.spoj.com/problems/HELPBOB/)|SPOJ|||3|\n|<ul><li>- [ ] Done</li></ul>|382|[Many polygons](http://www.spoj.com/problems/NGON/)|SPOJ|||3|\n|<ul><li>- [ ] Done</li></ul>|383|[Fast Food](https://uva.onlinejudge.org/index.php?option=onlinejudge&page=show_problem&problem=603)|UVA|||3|\n|<ul><li>- [ ] Done</li></ul>|384|[Budget Travel](https://uva.onlinejudge.org/index.php?option=onlinejudge&page=show_problem&problem=158)|UVA|||3|\n|<ul><li>- [ ] Done</li></ul>|385|[Free Candies](https://uva.onlinejudge.org/index.php?option=onlinejudge&page=show_problem&problem=1059)|UVA|||3|\n|<ul><li>- [ ] Done</li></ul>|386|[Physics Practical](http://codeforces.com/problemset/problem/253/B)|Codeforces||Codeforces Round #154 (Div. 2)|3|\n|<ul><li>- [ ] Done</li></ul>|387|[To Add or Not to Add](http://codeforces.com/problemset/problem/231/C)|Codeforces||Codeforces Round #143 (Div. 2)|3|\n|<ul><li>- [ ] Done</li></ul>|388|[Barcode](http://codeforces.com/problemset/problem/225/C)|Codeforces||Codeforces Round #139 (Div. 2)|3|\n|<ul><li>- [ ] Done</li></ul>|389|[Choosing Capital for Treeland](http://codeforces.com/problemset/problem/219/D)|Codeforces||Codeforces Round #135 (Div. 2)|3|\n|<ul><li>- [ ] Done</li></ul>|390|[Little Elephant and Interval](http://codeforces.com/problemset/problem/204/A)|Codeforces||Codeforces Round #129 (Div. 1) & Codeforces Round #129 (Div. 2)|3|\n|<ul><li>- [ ] Done</li></ul>|391|[Distance in Tree](http://codeforces.com/problemset/problem/161/D)|Codeforces||VK Cup 2012 Round 1|3|\n|<ul><li>- [ ] Done</li></ul>|392|[Longest Regular Bracket Sequence](http://codeforces.com/problemset/problem/5/C)|Codeforces||Codeforces Beta Round #5|3|\n|<ul><li>- [ ] Done</li></ul>|393|[Mysterious Present](http://codeforces.com/problemset/problem/4/D)|Codeforces||Codeforces Beta Round #4 (Div. 2 Only)|3|\n|<ul><li>- [ ] Done</li></ul>|394|[The least round way](http://codeforces.com/problemset/problem/2/B)|Codeforces||Codeforces Beta Round #2|3|\n|<ul><li>- [ ] Done</li></ul>|395|[ZigZag](http://community.topcoder.com/stat?c=problem_statement&pm=1259)|TopCoder||TCCC '03 Semifinals 3 - Div1 easy] (4493)|3|\n|<ul><li>- [ ] Done</li></ul>|396|[BadNeighbors](http://community.topcoder.com/stat?c=problem_statement&pm=2402)|TopCoder||TCCC '04 Round 4 - Div1 easy] (5009)|3|\n|<ul><li>- [ ] Done</li></ul>|397|[Hierarchy](http://acm.timus.ru/problem.aspx?space=1&num=1117)|Timus|||3|\n|<ul><li>- [ ] Done</li></ul>|398|[Gentlemen](http://acm.timus.ru/problem.aspx?space=1&num=1244)|Timus|||3|\n|<ul><li>- [ ] Done</li></ul>|399|[Minimal Coverage](http://acm.timus.ru/problem.aspx?space=1&num=1303)|Timus|||3|\n|<ul><li>- [ ] Done</li></ul>|400|[Intervals of Monotonicity](http://acm.timus.ru/problem.aspx?space=1&num=1346)|Timus|||3|\n|<ul><li>- [ ] Done</li></ul>|401|[Sense of Beauty](http://acm.timus.ru/problem.aspx?space=1&num=1501)|Timus|||3|\n|<ul><li>- [ ] Done</li></ul>|402|[Mnemonics and Palindromes](http://acm.timus.ru/problem.aspx?space=1&num=1635)|Timus|||3|\n|<ul><li>- [ ] Done</li></ul>|403|[Raucous Rockers](https://uva.onlinejudge.org/index.php?option=onlinejudge&page=show_problem&problem=414)|UVA|||3|\n|<ul><li>- [ ] Done</li></ul>|404|[COUNT PAREN](http://www.spoj.com/problems/PAREN/)|SPOJ|||3|\n|<ul><li>- [ ] Done</li></ul>|405|[How Many O's?](https://uva.onlinejudge.org/index.php?option=onlinejudge&page=show_problem&problem=1979)|UVA|||3|\n|<ul><li>- [ ] Done</li></ul>|406|[Bribe the Prisoners](http://www.spoj.com/problems/GCJ1C09C/)|SPOJ|||3|\n|<ul><li>- [ ] Done</li></ul>|407|[I-Keyboard](https://icpcarchive.ecs.baylor.edu/index.php?option=onlinejudge&page=show_problem&problem=162)|Live Archive|2000|Europe - Central|3|\n|<ul><li>- [ ] Done</li></ul>|408|[Orchard Trees](https://uva.onlinejudge.org/index.php?option=onlinejudge&page=show_problem&problem=79)|UVA|||3|\n|<ul><li>- [ ] Done</li></ul>|409|[Determine it](https://uva.onlinejudge.org/index.php?option=onlinejudge&page=show_problem&problem=1461)|UVA|||3|\n|<ul><li>- [ ] Done</li></ul>|410|[Car with powers](http://www.spoj.com/problems/POWERCAR/)|SPOJ|||3|\n|<ul><li>- [ ] Done</li></ul>|411|[Make Psycho](http://www.spoj.com/problems/PSYCHO3/)|SPOJ|||3|\n|<ul><li>- [ ] Done</li></ul>|412|[Most Servings Meal](http://www.spoj.com/problems/MKUHAR/)|SPOJ|||3|\n|<ul><li>- [ ] Done</li></ul>|413|[Term Strategy](https://uva.onlinejudge.org/index.php?option=onlinejudge&page=show_problem&problem=2316)|UVA|||3|\n|<ul><li>- [ ] Done</li></ul>|414|[Best Coalitions](https://uva.onlinejudge.org/index.php?option=onlinejudge&page=show_problem&problem=2705)|UVA|||3|\n|<ul><li>- [ ] Done</li></ul>|415|[RGBStreet](http://community.topcoder.com/stat?c=problem_statement&pm=6680)|TopCoder||SRM 325 - Div2 medium] (10005)|3|\n|<ul><li>- [ ] Done</li></ul>|416|[Cards, bags and coins](http://www.codechef.com/problems/ANUCBC)|CodeChef|||3|\n|<ul><li>- [ ] Done</li></ul>|417|[Sereja and Game](http://www.codechef.com/problems/SEAGM)|CodeChef|||3|\n|<ul><li>- [ ] Done</li></ul>|418|[Little Elephant and Movies](http://www.codechef.com/problems/LEMOVIE)|CodeChef|||3|\n|<ul><li>- [ ] Done</li></ul>|419|[Zeta-Nim Game](http://www.codechef.com/problems/TAKEAWAY)|CodeChef|||3|\n|<ul><li>- [ ] Done</li></ul>|420|[The Matrix Game](http://www.codechef.com/problems/SNCK01)|CodeChef|||3|\n|<ul><li>- [ ] Done</li></ul>|421|[Pleasing Chief](http://www.codechef.com/problems/CHIEFETT)|CodeChef|||3|\n|<ul><li>- [ ] Done</li></ul>|422|[Maximum Absurdity](http://codeforces.com/problemset/problem/332/B)|Codeforces||Codeforces Round #193 (Div. 2)|3|\n|<ul><li>- [ ] Done</li></ul>|423|[Building Bridges(HARD)](http://www.spoj.com/problems/BRDGHRD/)|SPOJ|||3|\n|<ul><li>- [ ] Done</li></ul>|424|[Gargari and Permutations](http://codeforces.com/problemset/problem/463/D)|Codeforces||Codeforces Round #264 (Div. 2)|3|\n|<ul><li>- [ ] Done</li></ul>|425|[Fetching Cooking Tools](http://www.codechef.com/problems/TOOLS)|CodeChef|||3|\n|<ul><li>- [ ] Done</li></ul>|426|[Color Stripe](http://codeforces.com/problemset/problem/219/C)|Codeforces||Codeforces Round #135 (Div. 2)|3|\n|<ul><li>- [ ] Done</li></ul>|427|[Crime Wave - The Sequel](https://uva.onlinejudge.org/index.php?option=onlinejudge&page=show_problem&problem=1687)|UVA|||3|\n|<ul><li>- [ ] Done</li></ul>|428|[Many Paths, One Destination](https://uva.onlinejudge.org/index.php?option=onlinejudge&page=show_problem&problem=929)|UVA|||3|\n|<ul><li>- [ ] Done</li></ul>|429|[Scheduling Lectures](https://uva.onlinejudge.org/index.php?option=onlinejudge&page=show_problem&problem=548)|UVA|||3|\n|<ul><li>- [ ] Done</li></ul>|430|[AGTC](https://uva.onlinejudge.org/index.php?option=onlinejudge&page=show_problem&problem=3648)|UVA|||3|\n|<ul><li>- [ ] Done</li></ul>|431|[Hippity Hopscotch](https://uva.onlinejudge.org/index.php?option=onlinejudge&page=show_problem&problem=1200)|UVA|||3|\n|<ul><li>- [ ] Done</li></ul>|432|[Little Red Riding Hood](https://uva.onlinejudge.org/index.php?option=onlinejudge&page=show_problem&problem=2008)|UVA|||3|\n|<ul><li>- [ ] Done</li></ul>|433|[Walking Around Wisely](https://uva.onlinejudge.org/index.php?option=onlinejudge&page=show_problem&problem=867)|UVA|||3|\n|<ul><li>- [ ] Done</li></ul>|434|[Probablistic OR](http://www.spoj.com/problems/PROBOR/)|SPOJ|||3|\n|<ul><li>- [ ] Done</li></ul>|435|[End up with More Teams](https://uva.onlinejudge.org/index.php?option=onlinejudge&page=show_problem&problem=2029)|UVA|||3|\n|<ul><li>- [ ] Done</li></ul>|436|[Fewest Flops](https://uva.onlinejudge.org/index.php?option=onlinejudge&page=show_problem&problem=2547)|UVA|||3|\n|<ul><li>- [ ] Done</li></ul>|437|[IOI07 Miners](http://www.spoj.com/problems/NKMINERS/)|SPOJ|||3|\n|<ul><li>- [ ] Done</li></ul>|438|[Beautiful Numbers](https://uva.onlinejudge.org/index.php?option=onlinejudge&page=show_problem&problem=2467)|UVA|||3|\n|<ul><li>- [ ] Done</li></ul>|439|[Mr. Kitayuta, the Treasure Hunter](http://codeforces.com/problemset/problem/505/C)|Codeforces||Codeforces Round #286 (Div. 2) & Codeforces Round #286 (Div. 1)|3|\n|<ul><li>- [ ] Done</li></ul>|440|[Dynamic LCA](http://www.spoj.com/problems/DYNALCA/)|SPOJ|||3|\n|<ul><li>- [ ] Done</li></ul>|441|[Sum of Digits](http://acm.timus.ru/problem.aspx?space=1&num=1658)|Timus|||3|\n|<ul><li>- [ ] Done</li></ul>|442|[Tour](https://uva.onlinejudge.org/index.php?option=onlinejudge&page=show_problem&problem=4093)|UVA|||3|\n|<ul><li>- [ ] Done</li></ul>|443|[Count Paths](p?ID=157)|A2 Online Judge|||3|\n|<ul><li>- [ ] Done</li></ul>|444|[Plug-in](http://codeforces.com/problemset/problem/81/A)|Codeforces||Yandex.Algorithm Open 2011 Qualification 1|3|\n|<ul><li>- [ ] Done</li></ul>|445|[Internet Address](http://codeforces.com/problemset/problem/245/B)|Codeforces||CROC-MBTU 2012, Elimination Round (ACM-ICPC)|3|\n|<ul><li>- [ ] Done</li></ul>|446|[Petya and Java](http://codeforces.com/problemset/problem/66/A)|Codeforces||Codeforces Beta Round #61 (Div. 2)|3|\n|<ul><li>- [ ] Done</li></ul>|447|[Lazy Math Instructor](https://icpcarchive.ecs.baylor.edu/index.php?option=onlinejudge&page=show_problem&problem=57)|Live Archive|2000|Asia - Tehran|3|\n|<ul><li>- [ ] Done</li></ul>|448|[Simple Strings](http://codeforces.com/problemset/problem/665/C)|Codeforces||Educational Codeforces Round 12|3|\n|<ul><li>- [ ] Done</li></ul>|449|[Hard Process](http://codeforces.com/problemset/problem/660/C)|Codeforces||Educational Codeforces Round 11|3|\n|<ul><li>- [ ] Done</li></ul>|450|[Bear and Compressing](http://codeforces.com/problemset/problem/653/B)|Codeforces||IndiaHacks 2016 - Online Edition (Div. 1 + Div. 2)|3|\n|<ul><li>- [ ] Done</li></ul>|451|[New Skateboard](http://codeforces.com/problemset/problem/628/B)|Codeforces||Educational Codeforces Round 8|3|\n|<ul><li>- [ ] Done</li></ul>|452|[Cards](http://codeforces.com/problemset/problem/626/B)|Codeforces||8VC Venture Cup 2016 - Elimination Round|3|\n|<ul><li>- [ ] Done</li></ul>|453|[Longtail Hedgehog](http://codeforces.com/problemset/problem/615/B)|Codeforces||Codeforces Round #338 (Div. 2)|3|\n|<ul><li>- [ ] Done</li></ul>|454|[Zuma](http://codeforces.com/problemset/problem/607/B)|Codeforces||Codeforces Round #336 (Div. 1) & Codeforces Round #336 (Div. 2)|3|\n|<ul><li>- [ ] Done</li></ul>|455|[Kefa and Dishes](http://codeforces.com/problemset/problem/580/D)|Codeforces||Codeforces Round #321 (Div. 2)|3|\n|<ul><li>- [ ] Done</li></ul>|456|[Bear and Blocks](http://codeforces.com/problemset/problem/573/B)|Codeforces||Codeforces Round #318 [RussianCodeCup Thanks-Round] (Div. 1) & Codeforces Round #318 [RussianCodeCup Thanks-Round] (Div. 2)|3|\n|<ul><li>- [ ] Done</li></ul>|457|[Vanya and Scales](http://codeforces.com/problemset/problem/552/C)|Codeforces||Codeforces Round #308 (Div. 2)|3|\n|<ul><li>- [ ] Done</li></ul>|458|[Mike and Feet](http://codeforces.com/problemset/problem/547/B)|Codeforces||Codeforces Round #305 (Div. 1) & Codeforces Round #305 (Div. 2)|3|\n|<ul><li>- [ ] Done</li></ul>|459|[Writing Code](http://codeforces.com/problemset/problem/543/A)|Codeforces||Codeforces Round #302 (Div. 1) & Codeforces Round #302 (Div. 2)|3|\n|<ul><li>- [ ] Done</li></ul>|460|[A and B and Interesting Substrings](http://codeforces.com/problemset/problem/519/D)|Codeforces||Codeforces Round #294 (Div. 2)|3|\n|<ul><li>- [ ] Done</li></ul>|461|[Ilya and Escalator](http://codeforces.com/problemset/problem/518/D)|Codeforces||Codeforces Round #293 (Div. 2)|3|\n|<ul><li>- [ ] Done</li></ul>|462|[Painting Fence](http://codeforces.com/problemset/problem/448/C)|Codeforces||Codeforces Round #256 (Div. 2)|3|\n|<ul><li>- [ ] Done</li></ul>|463|[Working out](http://codeforces.com/problemset/problem/429/B)|Codeforces||Codeforces Round #245 (Div. 1) & Codeforces Round #245 (Div. 2)|3|\n|<ul><li>- [ ] Done</li></ul>|464|[Booking System](http://codeforces.com/problemset/problem/416/C)|Codeforces||Codeforces Round #241 (Div. 2)|3|\n|<ul><li>- [ ] Done</li></ul>|465|[Art Union](http://codeforces.com/problemset/problem/416/B)|Codeforces||Codeforces Round #241 (Div. 2)|3|\n|<ul><li>- [ ] Done</li></ul>|466|[Long Path](http://codeforces.com/problemset/problem/407/B)|Codeforces||Codeforces Round #239 (Div. 1) & Codeforces Round #239 (Div. 2)|3|\n|<ul><li>- [ ] Done</li></ul>|467|[Bear and Prime Numbers](http://codeforces.com/problemset/problem/385/C)|Codeforces||Codeforces Round #226 (Div. 2)|3|\n|<ul><li>- [ ] Done</li></ul>|468|[Permutation](http://codeforces.com/problemset/problem/359/B)|Codeforces||Codeforces Round #209 (Div. 2)|3|\n|<ul><li>- [ ] Done</li></ul>|469|[Bubble Sort Graph](http://codeforces.com/problemset/problem/340/D)|Codeforces||Codeforces Round #198 (Div. 2) & Codeforces Round #198 (Div. 1)|3|\n|<ul><li>- [ ] Done</li></ul>|470|[Xenia and Weights](http://codeforces.com/problemset/problem/339/C)|Codeforces||Codeforces Round #197 (Div. 2)|3|\n|<ul><li>- [ ] Done</li></ul>|471|[Greg and Graph](http://codeforces.com/problemset/problem/295/B)|Codeforces||Codeforces Round #179 (Div. 1) & Codeforces Round #179 (Div. 2)|3|\n|<ul><li>- [ ] Done</li></ul>|472|[Ladder](http://codeforces.com/problemset/problem/279/C)|Codeforces||Codeforces Round #171 (Div. 2)|3|\n|<ul><li>- [ ] Done</li></ul>|473|[Little Girl and Maximum XOR](http://codeforces.com/problemset/problem/276/D)|Codeforces||Codeforces Round #169 (Div. 2)|3|\n|<ul><li>- [ ] Done</li></ul>|474|[Greenhouse Effect](http://codeforces.com/problemset/problem/269/B)|Codeforces||Codeforces Round #165 (Div. 1) & Codeforces Round #165 (Div. 2)|3|\n|<ul><li>- [ ] Done</li></ul>|475|[Good Sequences](http://codeforces.com/problemset/problem/264/B)|Codeforces||Codeforces Round #162 (Div. 1) & Codeforces Round #162 (Div. 2)|3|\n|<ul><li>- [ ] Done</li></ul>|476|[Omar Loves Candies](p?ID=10)|A2 Online Judge|||3|\n|<ul><li>- [ ] Done</li></ul>|477|[Robbers' watch](http://codeforces.com/problemset/problem/685/A)|Codeforces||Codeforces Round #359 (Div. 1) & Codeforces Round #359 (Div. 2)|3|\n|<ul><li>- [ ] Done</li></ul>|478|[Recycling Bottles](http://codeforces.com/problemset/problem/671/A)|Codeforces||Codeforces Round #352 (Div. 1) & Codeforces Round #352 (Div. 2)|3|\n|<ul><li>- [ ] Done</li></ul>|479|[Alyona and the Tree](http://codeforces.com/problemset/problem/682/C)|Codeforces||Codeforces Round #358 (Div. 2)|3|\n|<ul><li>- [ ] Done</li></ul>|480|[Greedy Hydra](http://www.spoj.com/problems/DRAGON/)|SPOJ|||3|\n|<ul><li>- [ ] Done</li></ul>|481|[Coloring Trees](http://codeforces.com/problemset/problem/711/C)|Codeforces||Codeforces Round #369 (Div. 2)|3|\n|<ul><li>- [ ] Done</li></ul>|482|[Triangles](https://icpcarchive.ecs.baylor.edu/index.php?option=onlinejudge&page=show_problem&problem=4794)|Live Archive|2014|South Pacific|3|\n|<ul><li>- [ ] Done</li></ul>|483|[Ada and Game](http://www.spoj.com/problems/ADAGAME/)|SPOJ|||3|\n|<ul><li>- [ ] Done</li></ul>|484|[An impassioned circulation of affection](http://codeforces.com/problemset/problem/814/C)|Codeforces||Codeforces Round #418 (Div. 2)|3|\n|<ul><li>- [ ] Done</li></ul>|485|[The Debut Album](http://acm.timus.ru/problem.aspx?space=1&num=2018)|Timus|||3|\n|<ul><li>- [ ] Done</li></ul>|486|[String Popping](https://uva.onlinejudge.org/index.php?option=onlinejudge&page=show_problem&problem=3702)|UVA|||3|\n|<ul><li>- [ ] Done</li></ul>|487|[FOODIE](http://www.spoj.com/problems/FOODIE/)|SPOJ|||3|\n|<ul><li>- [ ] Done</li></ul>|488|[Shopping Trip](https://uva.onlinejudge.org/index.php?option=onlinejudge&page=show_problem&problem=2259)|UVA|||3|\n|<ul><li>- [ ] Done</li></ul>|489|[Arpa's weak amphitheater and Mehrdad's valuable Hoses](http://codeforces.com/problemset/problem/741/B)|Codeforces||Codeforces Round #383 (Div. 1) & Codeforces Round #383 (Div. 2)|3|\n|<ul><li>- [ ] Done</li></ul>|490|[Hopeless Coach](http://acm.tju.edu.cn/toj/showp3051.html)|TJU|||3|\n|<ul><li>- [ ] Done</li></ul>|491|[Alyona and Spreadsheet](http://codeforces.com/problemset/problem/777/C)|Codeforces||Codeforces Round #401 (Div. 2)|3|\n|<ul><li>- [ ] Done</li></ul>|492|[Sagheer, the Hausmeister](http://codeforces.com/problemset/problem/812/B)|Codeforces||Codeforces Round #417 (Div. 2)|3|\n|<ul><li>- [ ] Done</li></ul>|493|[Mike and gcd problem](http://codeforces.com/problemset/problem/798/C)|Codeforces||Codeforces Round #410 (Div. 2)|3|\n|<ul><li>- [ ] Done</li></ul>|494|[Mahmoud and a Message](http://codeforces.com/problemset/problem/766/C)|Codeforces||Codeforces Round #396 (Div. 2)|3|\n|<ul><li>- [ ] Done</li></ul>|495|[Journey](http://codeforces.com/problemset/problem/721/C)|Codeforces||Codeforces Round #374 (Div. 2)|3|\n|<ul><li>- [ ] Done</li></ul>|496|[Re-Arrange II](http://www.spoj.com/problems/MAIN112/)|SPOJ|||3|\n|<ul><li>- [ ] Done</li></ul>|497|[Combo Deal](https://uva.onlinejudge.org/index.php?option=onlinejudge&page=show_problem&problem=1839)|UVA|||3|\n|<ul><li>- [ ] Done</li></ul>|498|[ACM (ACronym Maker)](https://icpcarchive.ecs.baylor.edu/index.php?option=onlinejudge&page=show_problem&problem=1373)|Live Archive|2005|North America - East Central NA|3|\n|<ul><li>- [ ] Done</li></ul>|499|[Save the problem!](http://codeforces.com/problemset/problem/865/A)|Codeforces||MemSQL Start[c]UP 3.0 - Round 2 (onsite finalists)|3|\n|<ul><li>- [ ] Done</li></ul>|500|[The Vindictive Coach](https://uva.onlinejudge.org/index.php?option=onlinejudge&page=show_problem&problem=643)|UVA|||3|\n|<ul><li>- [ ] Done</li></ul>|501|[Boy Scouts](http://www.spoj.com/problems/BOYSCOUT/)|SPOJ|||4|\n|<ul><li>- [ ] Done</li></ul>|502|[Antimonotonicity](https://uva.onlinejudge.org/index.php?option=onlinejudge&page=show_problem&problem=2181)|UVA|||4|\n|<ul><li>- [ ] Done</li></ul>|503|[Let go to the movies](http://www.spoj.com/problems/ANARC07G/)|SPOJ|||4|\n|<ul><li>- [ ] Done</li></ul>|504|[Who is The Boss](http://www.spoj.com/problems/VBOSS/)|SPOJ|||4|\n|<ul><li>- [ ] Done</li></ul>|505|[Drop the Triples](http://www.spoj.com/problems/DTT/)|SPOJ|||4|\n|<ul><li>- [ ] Done</li></ul>|506|[Najkraci](http://www.spoj.com/problems/NAJKRACI/)|SPOJ|||4|\n|<ul><li>- [ ] Done</li></ul>|507|[Convex Polygons](http://www.spoj.com/problems/CVXPOLY/)|SPOJ|||4|\n|<ul><li>- [ ] Done</li></ul>|508|[Trees Again](http://www.spoj.com/problems/CNTTREE/)|SPOJ|||4|\n|<ul><li>- [ ] Done</li></ul>|509|[Batman](https://uva.onlinejudge.org/index.php?option=onlinejudge&page=show_problem&problem=2509)|UVA|||4|\n|<ul><li>- [ ] Done</li></ul>|510|[Almost Arithmetical Progression](http://codeforces.com/problemset/problem/255/C)|Codeforces||Codeforces Round #156 (Div. 2) & Codeforces Round #156 (Div. 1)|4|\n|<ul><li>- [ ] Done</li></ul>|511|[Chilly Willy](http://codeforces.com/problemset/problem/248/B)|Codeforces||Codeforces Round #152 (Div. 2)|4|\n|<ul><li>- [ ] Done</li></ul>|512|[Queries for Number of Palindromes](http://codeforces.com/problemset/problem/245/H)|Codeforces||CROC-MBTU 2012, Elimination Round (ACM-ICPC)|4|\n|<ul><li>- [ ] Done</li></ul>|513|[Weather](http://codeforces.com/problemset/problem/234/C)|Codeforces||Codeforces Round #145 (Div. 2, ACM-ICPC Rules)|4|\n|<ul><li>- [ ] Done</li></ul>|514|[Hometask](http://codeforces.com/problemset/problem/214/B)|Codeforces||Codeforces Round #131 (Div. 2)|4|\n|<ul><li>- [ ] Done</li></ul>|515|[Palindrome pairs](http://codeforces.com/problemset/problem/159/D)|Codeforces||VK Cup 2012 Qualification Round 2|4|\n|<ul><li>- [ ] Done</li></ul>|516|[Message](http://codeforces.com/problemset/problem/156/A)|Codeforces||Codeforces Round #110 (Div. 1) & Codeforces Round #110 (Div. 2)|4|\n|<ul><li>- [ ] Done</li></ul>|517|[Hometask](http://codeforces.com/problemset/problem/154/A)|Codeforces||Codeforces Round #109 (Div. 1) & Codeforces Round #109 (Div. 2)|4|\n|<ul><li>- [ ] Done</li></ul>|518|[Bag of mice](http://codeforces.com/problemset/problem/148/D)|Codeforces||Codeforces Round #105 (Div. 2)|4|\n|<ul><li>- [ ] Done</li></ul>|519|[Buns](http://codeforces.com/problemset/problem/106/C)|Codeforces||Codeforces Beta Round #82 (Div. 2)|4|\n|<ul><li>- [ ] Done</li></ul>|520|[Enemy is weak](http://codeforces.com/problemset/problem/61/E)|Codeforces||Codeforces Beta Round #57 (Div. 2)|4|\n|<ul><li>- [ ] Done</li></ul>|521|[Eternal Victory](http://codeforces.com/problemset/problem/61/D)|Codeforces||Codeforces Beta Round #57 (Div. 2)|4|\n|<ul><li>- [ ] Done</li></ul>|522|[Fatawy](http://www.spoj.com/problems/FATAWY/)|SPOJ|||4|\n|<ul><li>- [ ] Done</li></ul>|523|[Malevich Strikes Back!](http://acm.timus.ru/problem.aspx?space=1&num=1221)|Timus|||4|\n|<ul><li>- [ ] Done</li></ul>|524|[Folding](http://acm.timus.ru/problem.aspx?space=1&num=1238)|Timus|||4|\n|<ul><li>- [ ] Done</li></ul>|525|[Mars Canals](http://acm.timus.ru/problem.aspx?space=1&num=1287)|Timus|||4|\n|<ul><li>- [ ] Done</li></ul>|526|[Bottle Taps](http://acm.timus.ru/problem.aspx?space=1&num=1326)|Timus|||4|\n|<ul><li>- [ ] Done</li></ul>|527|[Classmates 2](http://acm.timus.ru/problem.aspx?space=1&num=1362)|Timus|||4|\n|<ul><li>- [ ] Done</li></ul>|528|[Crack](http://acm.timus.ru/problem.aspx?space=1&num=1410)|Timus|||4|\n|<ul><li>- [ ] Done</li></ul>|529|[SMS](http://acm.timus.ru/problem.aspx?space=1&num=1427)|Timus|||4|\n|<ul><li>- [ ] Done</li></ul>|530|[Gasoline Station](http://acm.timus.ru/problem.aspx?space=1&num=1437)|Timus|||4|\n|<ul><li>- [ ] Done</li></ul>|531|[One-two, One-two 2](http://acm.timus.ru/problem.aspx?space=1&num=1495)|Timus|||4|\n|<ul><li>- [ ] Done</li></ul>|532|[Lemon Tale](http://acm.timus.ru/problem.aspx?space=1&num=1513)|Timus|||4|\n|<ul><li>- [ ] Done</li></ul>|533|[Communication Fiend](http://acm.timus.ru/problem.aspx?space=1&num=1741)|Timus|||4|\n|<ul><li>- [ ] Done</li></ul>|534|[Chocolate](http://www.spoj.com/problems/SOCOLA/)|SPOJ|||4|\n|<ul><li>- [ ] Done</li></ul>|535|[ICPC Team Strategy](https://uva.onlinejudge.org/index.php?option=onlinejudge&page=show_problem&problem=3681)|UVA|||4|\n|<ul><li>- [ ] Done</li></ul>|536|[Zeros and Ones](https://uva.onlinejudge.org/index.php?option=onlinejudge&page=show_problem&problem=3215)|UVA|||4|\n|<ul><li>- [ ] Done</li></ul>|537|[BATMAN4](http://www.spoj.com/problems/BAT4/)|SPOJ|||4|\n|<ul><li>- [ ] Done</li></ul>|538|[Bit by Bit](http://www.spoj.com/problems/DCEPC807/)|SPOJ|||4|\n|<ul><li>- [ ] Done</li></ul>|539|[The Bridges of Kolsberg](https://uva.onlinejudge.org/index.php?option=onlinejudge&page=show_problem&problem=3613)|UVA|||4|\n|<ul><li>- [ ] Done</li></ul>|540|[Busy Programmer](https://uva.onlinejudge.org/index.php?option=onlinejudge&page=show_problem&problem=2427)|UVA|||4|\n|<ul><li>- [ ] Done</li></ul>|541|[Chocolate Box](https://uva.onlinejudge.org/index.php?option=onlinejudge&page=show_problem&problem=1589)|UVA|||4|\n|<ul><li>- [ ] Done</li></ul>|542|[Digit Sum](https://uva.onlinejudge.org/index.php?option=onlinejudge&page=show_problem&problem=3962)|UVA|||4|\n|<ul><li>- [ ] Done</li></ul>|543|[Dominoes](http://www.spoj.com/problems/DOMINOES/)|SPOJ|||4|\n|<ul><li>- [ ] Done</li></ul>|544|[Tiling Dominoes](https://uva.onlinejudge.org/index.php?option=onlinejudge&page=show_problem&problem=2245)|UVA|||4|\n|<ul><li>- [ ] Done</li></ul>|545|[INVITATION FOR TECHOFES](http://www.spoj.com/problems/TECHOFES/)|SPOJ|||4|\n|<ul><li>- [ ] Done</li></ul>|546|[Expect the Expected](https://uva.onlinejudge.org/index.php?option=onlinejudge&page=show_problem&problem=2422)|UVA|||4|\n|<ul><li>- [ ] Done</li></ul>|547|[Dumb Bones](https://uva.onlinejudge.org/index.php?option=onlinejudge&page=show_problem&problem=1470)|UVA|||4|\n|<ul><li>- [ ] Done</li></ul>|548|[Minion Circle](http://www.codechef.com/problems/CIRCLE)|CodeChef|||4|\n|<ul><li>- [ ] Done</li></ul>|549|[Lov-e Pap Pap-e Polti](http://www.spoj.com/problems/LPPP/)|SPOJ|||4|\n|<ul><li>- [ ] Done</li></ul>|550|[Little Elephant and Blocks](http://www.codechef.com/problems/LEBLOCKS)|CodeChef|||4|\n|<ul><li>- [ ] Done</li></ul>|551|[Pashmak and Graph](http://codeforces.com/problemset/problem/459/E)|Codeforces||Codeforces Round #261 (Div. 2)|4|\n|<ul><li>- [ ] Done</li></ul>|552|[Magic, Wizardry and Wonders](http://codeforces.com/problemset/problem/231/B)|Codeforces||Codeforces Round #143 (Div. 2)|4|\n|<ul><li>- [ ] Done</li></ul>|553|[Another Assignment Problem](http://www.spoj.com/problems/ASSIGN4/)|SPOJ|||4|\n|<ul><li>- [ ] Done</li></ul>|554|[Little Pony and Harmony Chest](http://codeforces.com/problemset/problem/453/B)|Codeforces||Codeforces Round #259 (Div. 1) & Codeforces Round #259 (Div. 2)|4|\n|<ul><li>- [ ] Done</li></ul>|555|[Matchsticks](http://acm.tju.edu.cn/toj/showp3817.html)|TJU|||4|\n|<ul><li>- [ ] Done</li></ul>|556|[Antimatter Ray Clearcutting](https://uva.onlinejudge.org/index.php?option=onlinejudge&page=show_problem&problem=1949)|UVA|||4|\n|<ul><li>- [ ] Done</li></ul>|557|[Bright Bracelet](https://icpcarchive.ecs.baylor.edu/index.php?option=onlinejudge&page=show_problem&problem=785)|Live Archive|2003|North America - Mid-Central USA|4|\n|<ul><li>- [ ] Done</li></ul>|558|[Fortune Telling](http://codeforces.com/problemset/problem/59/B)|Codeforces||Codeforces Beta Round #55 (Div. 2)|4|\n|<ul><li>- [ ] Done</li></ul>|559|[Balanced Numbers](http://www.spoj.com/problems/BALNUM/)|SPOJ|||4|\n|<ul><li>- [ ] Done</li></ul>|560|[Avoiding Jungle in the Dark](https://uva.onlinejudge.org/index.php?option=onlinejudge&page=show_problem&problem=2540)|UVA|||4|\n|<ul><li>- [ ] Done</li></ul>|561|[Account Book](https://uva.onlinejudge.org/index.php?option=onlinejudge&page=show_problem&problem=2932)|UVA|||4|\n|<ul><li>- [ ] Done</li></ul>|562|[Matches](https://uva.onlinejudge.org/index.php?option=onlinejudge&page=show_problem&problem=2370)|UVA|||4|\n|<ul><li>- [ ] Done</li></ul>|563|[Fox And Jumping](http://codeforces.com/problemset/problem/510/D)|Codeforces||Codeforces Round #290 (Div. 2) & Codeforces Round #290 (Div. 1)|4|\n|<ul><li>- [ ] Done</li></ul>|564|[A Lot of Games](http://codeforces.com/problemset/problem/455/B)|Codeforces||Codeforces Round #260 (Div. 1) & Codeforces Round #260 (Div. 2)|4|\n|<ul><li>- [ ] Done</li></ul>|565|[Red-Green Towers](http://codeforces.com/problemset/problem/478/D)|Codeforces||Codeforces Round #273 (Div. 2)|4|\n|<ul><li>- [ ] Done</li></ul>|566|[Number of Paths in the Empire](http://acm.sgu.ru/problem.php?contest=0&problem=407)|SGU|||4|\n|<ul><li>- [ ] Done</li></ul>|567|[Civilization](http://codeforces.com/problemset/problem/455/C)|Codeforces||Codeforces Round #260 (Div. 1) & Codeforces Round #260 (Div. 2)|4|\n|<ul><li>- [ ] Done</li></ul>|568|[Fools and Roads](http://codeforces.com/problemset/problem/191/C)|Codeforces||Codeforces Round #121 (Div. 1) & Codeforces Round #121 (Div. 2)|4|\n|<ul><li>- [ ] Done</li></ul>|569|[DIVSEQ](http://www.spoj.com/problems/DIVSEQ/)|SPOJ|||4|\n|<ul><li>- [ ] Done</li></ul>|570|[Dima and Salad](http://codeforces.com/problemset/problem/366/C)|Codeforces||Codeforces Round #214 (Div. 2)|4|\n|<ul><li>- [ ] Done</li></ul>|571|[Image Preview](http://codeforces.com/problemset/problem/650/B)|Codeforces||Codeforces Round #345 (Div. 1) & Codeforces Round #345 (Div. 2)|4|\n|<ul><li>- [ ] Done</li></ul>|572|[Babaei and Birthday Cake](http://codeforces.com/problemset/problem/629/D)|Codeforces||Codeforces Round #343 (Div. 2)|4|\n|<ul><li>- [ ] Done</li></ul>|573|[XOR Equation](http://codeforces.com/problemset/problem/627/A)|Codeforces||8VC Venture Cup 2016 - Final Round|4|\n|<ul><li>- [ ] Done</li></ul>|574|[Once Again...](http://codeforces.com/problemset/problem/582/B)|Codeforces||Codeforces Round #323 (Div. 1) & Codeforces Round #323 (Div. 2)|4|\n|<ul><li>- [ ] Done</li></ul>|575|[Gerald and Giant Chess](http://codeforces.com/problemset/problem/559/C)|Codeforces||Codeforces Round #313 (Div. 1) & Codeforces Round #313 (Div. 2)|4|\n|<ul><li>- [ ] Done</li></ul>|576|[Arthur and Table](http://codeforces.com/problemset/problem/557/C)|Codeforces||Codeforces Round #311 (Div. 2)|4|\n|<ul><li>- [ ] Done</li></ul>|577|[Bad Luck Island](http://codeforces.com/problemset/problem/540/D)|Codeforces||Codeforces Round #301 (Div. 2)|4|\n|<ul><li>- [ ] Done</li></ul>|578|[Clique Problem](http://codeforces.com/problemset/problem/527/D)|Codeforces||Codeforces Round #296 (Div. 2) & Codeforces Round #296 (Div. 1)|4|\n|<ul><li>- [ ] Done</li></ul>|579|[A and B and Lecture Rooms](http://codeforces.com/problemset/problem/519/E)|Codeforces||Codeforces Round #294 (Div. 2)|4|\n|<ul><li>- [ ] Done</li></ul>|580|[Riding in a Lift](http://codeforces.com/problemset/problem/479/E)|Codeforces||Codeforces Round #274 (Div. 2) & Codeforces Round #274 (Div. 1)|4|\n|<ul><li>- [ ] Done</li></ul>|581|[Appleman and Tree](http://codeforces.com/problemset/problem/461/B)|Codeforces||Codeforces Round #263 (Div. 1) & Codeforces Round #263 (Div. 2)|4|\n|<ul><li>- [ ] Done</li></ul>|582|[Prefixes and Suffixes](http://codeforces.com/problemset/problem/432/D)|Codeforces||Codeforces Round #246 (Div. 2)|4|\n|<ul><li>- [ ] Done</li></ul>|583|[Maximum Submatrix 2](http://codeforces.com/problemset/problem/375/B)|Codeforces||Codeforces Round #221 (Div. 1) & Codeforces Round #221 (Div. 2)|4|\n|<ul><li>- [ ] Done</li></ul>|584|[Jeff and Rounding](http://codeforces.com/problemset/problem/351/A)|Codeforces||Codeforces Round #204 (Div. 1) & Codeforces Round #204 (Div. 2)|4|\n|<ul><li>- [ ] Done</li></ul>|585|[Book of Evil](http://codeforces.com/problemset/problem/337/D)|Codeforces||Codeforces Round #196 (Div. 2) & Codeforces Round #196 (Div. 1)|4|\n|<ul><li>- [ ] Done</li></ul>|586|[Shaass and Bookshelf](http://codeforces.com/problemset/problem/294/B)|Codeforces||Codeforces Round #178 (Div. 2)|4|\n|<ul><li>- [ ] Done</li></ul>|587|[Cow Program](http://codeforces.com/problemset/problem/283/B)|Codeforces||Codeforces Round #174 (Div. 1) & Codeforces Round #174 (Div. 2)|4|\n|<ul><li>- [ ] Done</li></ul>|588|[Zero Tree](http://codeforces.com/problemset/problem/274/B)|Codeforces||Codeforces Round #168 (Div. 1) & Codeforces Round #168 (Div. 2)|4|\n|<ul><li>- [ ] Done</li></ul>|589|[Letter](http://codeforces.com/problemset/problem/180/C)|Codeforces||Codeforces Round #116 (Div. 2, ACM-ICPC Rules)|4|\n|<ul><li>- [ ] Done</li></ul>|590|[Round Table Knights](http://codeforces.com/problemset/problem/71/C)|Codeforces||Codeforces Beta Round #65 (Div. 2)|4|\n|<ul><li>- [ ] Done</li></ul>|591|[Reberland Linguistics](http://codeforces.com/problemset/problem/666/A)|Codeforces||Codeforces Round #349 (Div. 1) & Codeforces Round #349 (Div. 2)|4|\n|<ul><li>- [ ] Done</li></ul>|592|[The Child and Zoo](http://codeforces.com/problemset/problem/437/D)|Codeforces||Codeforces Round #250 (Div. 2) & Codeforces Round #250 (Div. 1)|4|\n|<ul><li>- [ ] Done</li></ul>|593|[The Values You Can Make](http://codeforces.com/problemset/problem/687/C)|Codeforces||Codeforces Round #360 (Div. 1) & Codeforces Round #360 (Div. 2)|4|\n|<ul><li>- [ ] Done</li></ul>|594|[Ingredients](http://www.spoj.com/problems/INGRED/)|SPOJ|||4|\n|<ul><li>- [ ] Done</li></ul>|595|[Generate a String](http://codeforces.com/problemset/problem/710/E)|Codeforces||Educational Codeforces Round 16|4|\n|<ul><li>- [ ] Done</li></ul>|596|[Forming Teams](http://codeforces.com/problemset/problem/216/B)|Codeforces||Codeforces Round #133 (Div. 2)|4|\n|<ul><li>- [ ] Done</li></ul>|597|[Can U Win?](https://uva.onlinejudge.org/index.php?option=onlinejudge&page=show_problem&problem=2400)|UVA|||4|\n|<ul><li>- [ ] Done</li></ul>|598|[Bridge Building](https://uva.onlinejudge.org/index.php?option=onlinejudge&page=show_problem&problem=917)|UVA|||4|\n|<ul><li>- [ ] Done</li></ul>|599|[Cái túi ( Hard version )](http://vn.spoj.com/problems/HUGEKNAP/)|SPOJ Vietnam|||4|\n|<ul><li>- [ ] Done</li></ul>|600|[Drazil and Tiles](http://codeforces.com/problemset/problem/515/D)|Codeforces||Codeforces Round #292 (Div. 2) & Codeforces Round #292 (Div. 1)|4|\n|<ul><li>- [ ] Done</li></ul>|601|[Going Postal](https://icpcarchive.ecs.baylor.edu/index.php?option=onlinejudge&page=show_problem&problem=4799)|Live Archive|2014|South Pacific|4|\n|<ul><li>- [ ] Done</li></ul>|602|[Namit In Trouble](http://www.spoj.com/problems/NGIRL/)|SPOJ|||4|\n|<ul><li>- [ ] Done</li></ul>|603|[New Year and Fireworks](http://codeforces.com/problemset/problem/750/D)|Codeforces||Good Bye 2016|4|\n|<ul><li>- [ ] Done</li></ul>|604|[Pie Rules](http://codeforces.com/problemset/problem/859/C)|Codeforces||MemSQL Start[c]UP 3.0 - Round 1|4|\n|<ul><li>- [ ] Done</li></ul>|605|[Fire](http://codeforces.com/problemset/problem/864/E)|Codeforces||Codeforces Round #436 (Div. 2)|4|\n|<ul><li>- [ ] Done</li></ul>|606|[Rent your airplane and make money](https://icpcarchive.ecs.baylor.edu/index.php?option=onlinejudge&page=show_problem&problem=943)|Live Archive|2003|Europe - Southwestern|4|\n|<ul><li>- [ ] Done</li></ul>|607|[Vladik and Memorable Trip](http://codeforces.com/problemset/problem/811/C)|Codeforces||Codeforces Round #416 (Div. 2)|4|\n|<ul><li>- [ ] Done</li></ul>|608|[Connecting Universities](http://codeforces.com/problemset/problem/700/B)|Codeforces||Codeforces Round #364 (Div. 1) & Codeforces Round #364 (Div. 2)|4|\n|<ul><li>- [ ] Done</li></ul>|609|[Office Keys](http://codeforces.com/problemset/problem/830/A)|Codeforces||Codeforces Round #424 (Div. 1, rated, based on VK Cup Finals) & Codeforces Round #424 (Div. 2, rated, based on VK Cup Finals)|4|\n|<ul><li>- [ ] Done</li></ul>|610|[The Intriguing Obsession](http://codeforces.com/problemset/problem/869/C)|Codeforces||Codeforces Round #439 (Div. 2)|4|\n|<ul><li>- [ ] Done</li></ul>|611|[Chloe and pleasant prizes](http://codeforces.com/problemset/problem/743/D)|Codeforces||Codeforces Round #384 (Div. 2)|4|\n|<ul><li>- [ ] Done</li></ul>|612|[Divide and conquer](http://www.codechef.com/problems/F6)|CodeChef|||4|\n|<ul><li>- [ ] Done</li></ul>|613|[Fire Again](http://codeforces.com/problemset/problem/35/C)|Codeforces||Codeforces Beta Round #35 (Div. 2)|4|\n|<ul><li>- [ ] Done</li></ul>|614|[Binary Search](https://icpcarchive.ecs.baylor.edu/index.php?option=onlinejudge&page=show_problem&problem=221)|Live Archive|2000|Europe - Northeastern|4|\n|<ul><li>- [ ] Done</li></ul>|615|[Expression Again](https://uva.onlinejudge.org/index.php?option=onlinejudge&page=show_problem&problem=1631)|UVA|||4|\n|<ul><li>- [ ] Done</li></ul>|616|[XOR-pyramid](http://codeforces.com/problemset/problem/983/B)|Codeforces||Codeforces Round #483 (Div. 1) [Thanks, Botan Investments and Victor Shaburov!] & Codeforces Round #483 (Div. 2) [Thanks, Botan Investments and Victor Shaburov!]|4|\n|<ul><li>- [ ] Done</li></ul>|617|[Party](p?ID=124)|A2 Online Judge|||4|\n|<ul><li>- [ ] Done</li></ul>|618|[Python Indentation](http://codeforces.com/problemset/problem/909/C)|Codeforces||Codeforces Round #455 (Div. 2)|4|\n|<ul><li>- [ ] Done</li></ul>|619|[Cookies](http://codeforces.com/problemset/problem/70/A)|Codeforces||Codeforces Beta Round #64|4|\n|<ul><li>- [ ] Done</li></ul>|620|[Philip J. Fry Problem](https://uva.onlinejudge.org/index.php?option=onlinejudge&page=show_problem&problem=3746)|UVA|||4|\n|<ul><li>- [ ] Done</li></ul>|621|[Free Parentheses](https://uva.onlinejudge.org/index.php?option=onlinejudge&page=show_problem&problem=3679)|UVA|||4|\n|<ul><li>- [ ] Done</li></ul>|622|[Assignments](https://icpcarchive.ecs.baylor.edu/index.php?option=onlinejudge&page=show_problem&problem=3090)|Live Archive|2010|Asia - Harbin|4|\n|<ul><li>- [ ] Done</li></ul>|623|[DNA Laboratory](http://www.spoj.com/problems/DNALAB/)|SPOJ|||5|\n|<ul><li>- [ ] Done</li></ul>|624|[Allergy Test](https://uva.onlinejudge.org/index.php?option=onlinejudge&page=show_problem&problem=2738)|UVA|||5|\n|<ul><li>- [ ] Done</li></ul>|625|[Coin Changing Again](https://uva.onlinejudge.org/index.php?option=onlinejudge&page=show_problem&problem=2226)|UVA|||5|\n|<ul><li>- [ ] Done</li></ul>|626|[Huffman´s Greed](http://www.spoj.com/problems/GREEDULM/)|SPOJ|||5|\n|<ul><li>- [ ] Done</li></ul>|627|[Connect Line Segments](http://www.spoj.com/problems/LINE/)|SPOJ|||5|\n|<ul><li>- [ ] Done</li></ul>|628|[Optimal Cut](https://uva.onlinejudge.org/index.php?option=onlinejudge&page=show_problem&problem=2882)|UVA|||5|\n|<ul><li>- [ ] Done</li></ul>|629|[Independent Attacking Zones](https://uva.onlinejudge.org/index.php?option=onlinejudge&page=show_problem&problem=2103)|UVA|||5|\n|<ul><li>- [ ] Done</li></ul>|630|[Clear Symmetry](http://codeforces.com/problemset/problem/201/A)|Codeforces||Codeforces Round #127 (Div. 1) & Codeforces Round #127 (Div. 2)|5|\n|<ul><li>- [ ] Done</li></ul>|631|[Dynasty Puzzles](http://codeforces.com/problemset/problem/191/A)|Codeforces||Codeforces Round #121 (Div. 1) & Codeforces Round #121 (Div. 2)|5|\n|<ul><li>- [ ] Done</li></ul>|632|[Compatible Numbers](http://codeforces.com/problemset/problem/165/E)|Codeforces||Codeforces Round #112 (Div. 2)|5|\n|<ul><li>- [ ] Done</li></ul>|633|[Substring and Subsequence](http://codeforces.com/problemset/problem/163/A)|Codeforces||VK Cup 2012 Round 2|5|\n|<ul><li>- [ ] Done</li></ul>|634|[Porcelain](http://codeforces.com/problemset/problem/148/E)|Codeforces||Codeforces Round #105 (Div. 2)|5|\n|<ul><li>- [ ] Done</li></ul>|635|[Logo Turtle](http://codeforces.com/problemset/problem/132/C)|Codeforces||Codeforces Beta Round #96 (Div. 1) & Codeforces Beta Round #96 (Div. 2)|5|\n|<ul><li>- [ ] Done</li></ul>|636|[Games with Rectangle](http://codeforces.com/problemset/problem/128/C)|Codeforces||Codeforces Beta Round #94 (Div. 1 Only) & Codeforces Beta Round #94 (Div. 2 Only)|5|\n|<ul><li>- [ ] Done</li></ul>|637|[Spiders](http://codeforces.com/problemset/problem/120/F)|Codeforces||School Regional Team Contest, Saratov, 2011|5|\n|<ul><li>- [ ] Done</li></ul>|638|[Petr#](http://codeforces.com/problemset/problem/113/B)|Codeforces||Codeforces Beta Round #86 (Div. 1 Only) & Codeforces Beta Round #86 (Div. 2 Only)|5|\n|<ul><li>- [ ] Done</li></ul>|639|[Basketball Team](http://codeforces.com/problemset/problem/107/B)|Codeforces||Codeforces Beta Round #83 (Div. 1 Only) & Codeforces Beta Round #83 (Div. 2 Only)|5|\n|<ul><li>- [ ] Done</li></ul>|640|[Number With The Given Amount Of Divisors](http://codeforces.com/problemset/problem/27/E)|Codeforces||Codeforces Beta Round #27 (Codeforces format, Div. 2)|5|\n|<ul><li>- [ ] Done</li></ul>|641|[Bargaining Table](http://codeforces.com/problemset/problem/22/B)|Codeforces||Codeforces Beta Round #22 (Div. 2 Only)|5|\n|<ul><li>- [ ] Done</li></ul>|642|[Checkout Assistant](http://codeforces.com/problemset/problem/19/B)|Codeforces||Codeforces Beta Round #19|5|\n|<ul><li>- [ ] Done</li></ul>|643|[Sequence](http://codeforces.com/problemset/problem/13/C)|Codeforces||Codeforces Beta Round #13|5|\n|<ul><li>- [ ] Done</li></ul>|644|[A Simple Task](http://codeforces.com/problemset/problem/11/D)|Codeforces||Codeforces Beta Round #11|5|\n|<ul><li>- [ ] Done</li></ul>|645|[How many trees?](http://codeforces.com/problemset/problem/9/D)|Codeforces||Codeforces Beta Round #9 (Div. 2 Only)|5|\n|<ul><li>- [ ] Done</li></ul>|646|[K-based Numbers. Version 3](http://acm.timus.ru/problem.aspx?space=1&num=1013)|Timus|||5|\n|<ul><li>- [ ] Done</li></ul>|647|[Ship Routes](http://acm.timus.ru/problem.aspx?space=1&num=1172)|Timus|||5|\n|<ul><li>- [ ] Done</li></ul>|648|[Train](http://acm.timus.ru/problem.aspx?space=1&num=1276)|Timus|||5|\n|<ul><li>- [ ] Done</li></ul>|649|[Enterprise](http://acm.timus.ru/problem.aspx?space=1&num=1342)|Timus|||5|\n|<ul><li>- [ ] Done</li></ul>|650|[Cargo Agency](http://acm.timus.ru/problem.aspx?space=1&num=1371)|Timus|||5|\n|<ul><li>- [ ] Done</li></ul>|651|[Roadworks](http://acm.timus.ru/problem.aspx?space=1&num=1389)|Timus|||5|\n|<ul><li>- [ ] Done</li></ul>|652|[Happiness to People!](http://acm.timus.ru/problem.aspx?space=1&num=1463)|Timus|||5|\n|<ul><li>- [ ] Done</li></ul>|653|[E-mail](http://acm.timus.ru/problem.aspx?space=1&num=1577)|Timus|||5|\n|<ul><li>- [ ] Done</li></ul>|654|[Anniversary Firework](http://acm.timus.ru/problem.aspx?space=1&num=1776)|Timus|||5|\n|<ul><li>- [ ] Done</li></ul>|655|[Atomic Car Race](https://uva.onlinejudge.org/index.php?option=onlinejudge&page=show_problem&problem=3652)|UVA|||5|\n|<ul><li>- [ ] Done</li></ul>|656|[IPL - CRICKET TOURNAMENT](http://www.spoj.com/problems/IPL1/)|SPOJ|||5|\n|<ul><li>- [ ] Done</li></ul>|657|[The Islands](https://uva.onlinejudge.org/index.php?option=onlinejudge&page=show_problem&problem=3537)|UVA|||5|\n|<ul><li>- [ ] Done</li></ul>|658|[Candy](https://uva.onlinejudge.org/index.php?option=onlinejudge&page=show_problem&problem=3298)|UVA|||5|\n|<ul><li>- [ ] Done</li></ul>|659|[Fibonacci Words](https://uva.onlinejudge.org/index.php?option=onlinejudge&page=show_problem&problem=3895)|UVA|||5|\n|<ul><li>- [ ] Done</li></ul>|660|[CreatureTraining](http://community.topcoder.com/stat?c=problem_statement&pm=8570)|TopCoder||TCO08 Round 2 - Div1 medium] (12012)|5|\n|<ul><li>- [ ] Done</li></ul>|661|[Lucky Common Subsequence](http://codeforces.com/problemset/problem/346/B)|Codeforces||Codeforces Round #201 (Div. 1) & Codeforces Round #201 (Div. 2)|5|\n|<ul><li>- [ ] Done</li></ul>|662|[Kalila and Dimna in the Logging Industry](http://codeforces.com/problemset/problem/319/C)|Codeforces||Codeforces Round #189 (Div. 1) & Codeforces Round #189 (Div. 2)|5|\n|<ul><li>- [ ] Done</li></ul>|663|[JUMPING DORA](http://www.spoj.com/problems/JUMPDORA/)|SPOJ|||5|\n|<ul><li>- [ ] Done</li></ul>|664|[GO FOR DIAMONDS](http://www.spoj.com/problems/GO4DIMON/)|SPOJ|||5|\n|<ul><li>- [ ] Done</li></ul>|665|[Subsequence Problem](http://www.spoj.com/problems/SUBP/)|SPOJ|||5|\n|<ul><li>- [ ] Done</li></ul>|666|[Weak Links](https://uva.onlinejudge.org/index.php?option=onlinejudge&page=show_problem&problem=4648)|UVA|||5|\n|<ul><li>- [ ] Done</li></ul>|667|[Sereja and Bubble Sort](http://www.codechef.com/problems/SEABUB)|CodeChef|||5|\n|<ul><li>- [ ] Done</li></ul>|668|[Count Digits](http://www.codechef.com/problems/CNTDIGIT)|CodeChef|||5|\n|<ul><li>- [ ] Done</li></ul>|669|[Paint the Tree](http://www.codechef.com/problems/TREERGB)|CodeChef|||5|\n|<ul><li>- [ ] Done</li></ul>|670|[Increase Sequence](http://codeforces.com/problemset/problem/466/D)|Codeforces||Codeforces Round #266 (Div. 2)|5|\n|<ul><li>- [ ] Done</li></ul>|671|[WordMath](http://community.topcoder.com/stat?c=problem_statement&pm=6572)|TopCoder||Unknown ()|5|\n|<ul><li>- [ ] Done</li></ul>|672|[Summing Slopes](http://www.codechef.com/problems/SUMSLOPE)|CodeChef|||5|\n|<ul><li>- [ ] Done</li></ul>|673|[Patches](https://www.urionlinejudge.com.br/judge/en/problems/view/1475)|URI|||5|\n|<ul><li>- [ ] Done</li></ul>|674|[Promotion](https://www.urionlinejudge.com.br/judge/en/problems/view/1624)|URI|||5|\n|<ul><li>- [ ] Done</li></ul>|675|[Hotel](https://icpcarchive.ecs.baylor.edu/index.php?option=onlinejudge&page=show_problem&problem=1551)|Live Archive|2005|Asia - Tehran|5|\n|<ul><li>- [ ] Done</li></ul>|676|[Antimatter](http://codeforces.com/problemset/problem/383/D)|Codeforces||Codeforces Round #225 (Div. 1)|5|\n|<ul><li>- [ ] Done</li></ul>|677|[Two Paths](http://codeforces.com/problemset/problem/14/D)|Codeforces||Codeforces Beta Round #14 (Div. 2)|5|\n|<ul><li>- [ ] Done</li></ul>|678|[Robot Rapping Results Report](http://codeforces.com/problemset/problem/645/D)|Codeforces||CROC 2016 - Elimination Round|5|\n|<ul><li>- [ ] Done</li></ul>|679|[Running with Obstacles](http://codeforces.com/problemset/problem/637/D)|Codeforces||VK Cup 2016 - Qualification Round 1|5|\n|<ul><li>- [ ] Done</li></ul>|680|[Spy Syndrome 2](http://codeforces.com/problemset/problem/633/C)|Codeforces||Manthan, Codefest 16|5|\n|<ul><li>- [ ] Done</li></ul>|681|[Famil Door and Brackets](http://codeforces.com/problemset/problem/629/C)|Codeforces||Codeforces Round #343 (Div. 2)|5|\n|<ul><li>- [ ] Done</li></ul>|682|[Wet Shark and Blocks](http://codeforces.com/problemset/problem/621/E)|Codeforces||Codeforces Round #341 (Div. 2)|5|\n|<ul><li>- [ ] Done</li></ul>|683|[Running Track](http://codeforces.com/problemset/problem/615/C)|Codeforces||Codeforces Round #338 (Div. 2)|5|\n|<ul><li>- [ ] Done</li></ul>|684|[Chocolate Bar](http://codeforces.com/problemset/problem/598/E)|Codeforces||Educational Codeforces Round 1|5|\n|<ul><li>- [ ] Done</li></ul>|685|[Restaurant](http://codeforces.com/problemset/problem/597/B)|Codeforces||Testing Round #12|5|\n|<ul><li>- [ ] Done</li></ul>|686|[Super M](http://codeforces.com/problemset/problem/592/D)|Codeforces||Codeforces Round #328 (Div. 2)|5|\n|<ul><li>- [ ] Done</li></ul>|687|[Minimization](http://codeforces.com/problemset/problem/571/B)|Codeforces||Codeforces Round #317 [AimFund Thanks-Round] (Div. 1) & Codeforces Round #317 [AimFund Thanks-Round] (Div. 2)|5|\n|<ul><li>- [ ] Done</li></ul>|688|[Symmetric and Transitive](http://codeforces.com/problemset/problem/568/B)|Codeforces||Codeforces Round #315 (Div. 1) & Codeforces Round #315 (Div. 2)|5|\n|<ul><li>- [ ] Done</li></ul>|689|[Clique in the Divisibility Graph](http://codeforces.com/problemset/problem/566/F)|Codeforces||VK Cup 2015 - Finals, online mirror|5|\n|<ul><li>- [ ] Done</li></ul>|690|[Correcting Mistakes](http://codeforces.com/problemset/problem/533/E)|Codeforces||VK Cup 2015 - Round 2 (unofficial online mirror, Div. 1 only)|5|\n|<ul><li>- [ ] Done</li></ul>|691|[Inversions problem](http://codeforces.com/problemset/problem/513/G1)|Codeforces||Rockethon 2015|5|\n|<ul><li>- [ ] Done</li></ul>|692|[Sums of Digits](http://codeforces.com/problemset/problem/509/C)|Codeforces||Codeforces Round #289 (Div. 2, ACM ICPC Rules)|5|\n|<ul><li>- [ ] Done</li></ul>|693|[Breaking Good](http://codeforces.com/problemset/problem/507/E)|Codeforces||Codeforces Round #287 (Div. 2)|5|\n|<ul><li>- [ ] Done</li></ul>|694|[Obsessive String](http://codeforces.com/problemset/problem/494/B)|Codeforces||Codeforces Round #282 (Div. 1) & Codeforces Round #282 (Div. 2)|5|\n|<ul><li>- [ ] Done</li></ul>|695|[Strip](http://codeforces.com/problemset/problem/487/B)|Codeforces||Codeforces Round #278 (Div. 1) & Codeforces Round #278 (Div. 2)|5|\n|<ul><li>- [ ] Done</li></ul>|696|[Valid Sets](http://codeforces.com/problemset/problem/486/D)|Codeforces||Codeforces Round #277 (Div. 2)|5|\n|<ul><li>- [ ] Done</li></ul>|697|[Pillars](http://codeforces.com/problemset/problem/474/E)|Codeforces||Codeforces Round #271 (Div. 2)|5|\n|<ul><li>- [ ] Done</li></ul>|698|[Elimination](http://codeforces.com/problemset/problem/417/A)|Codeforces||RCC 2014 Warmup (Div. 2)|5|\n|<ul><li>- [ ] Done</li></ul>|699|[Upgrading Array](http://codeforces.com/problemset/problem/402/D)|Codeforces||Codeforces Round #236 (Div. 2) & Codeforces Round #236 (Div. 1)|5|\n|<ul><li>- [ ] Done</li></ul>|700|[Roman and Numbers](http://codeforces.com/problemset/problem/401/D)|Codeforces||Codeforces Round #235 (Div. 2)|5|\n|<ul><li>- [ ] Done</li></ul>|701|[Inna and Dima](http://codeforces.com/problemset/problem/374/C)|Codeforces||Codeforces Round #220 (Div. 2)|5|\n|<ul><li>- [ ] Done</li></ul>|702|[Counting Rectangles is Fun](http://codeforces.com/problemset/problem/372/B)|Codeforces||Codeforces Round #219 (Div. 1) & Codeforces Round #219 (Div. 2)|5|\n|<ul><li>- [ ] Done</li></ul>|703|[Levko and Array](http://codeforces.com/problemset/problem/360/B)|Codeforces||Codeforces Round #210 (Div. 1) & Codeforces Round #210 (Div. 2)|5|\n|<ul><li>- [ ] Done</li></ul>|704|[Dima and Hares](http://codeforces.com/problemset/problem/358/D)|Codeforces||Codeforces Round #208 (Div. 2)|5|\n|<ul><li>- [ ] Done</li></ul>|705|[Vasya and Beautiful Arrays](http://codeforces.com/problemset/problem/354/C)|Codeforces||Codeforces Round #206 (Div. 1) & Codeforces Round #206 (Div. 2)|5|\n|<ul><li>- [ ] Done</li></ul>|706|[Jeff and Furik](http://codeforces.com/problemset/problem/351/B)|Codeforces||Codeforces Round #204 (Div. 1) & Codeforces Round #204 (Div. 2)|5|\n|<ul><li>- [ ] Done</li></ul>|707|[The Great Julya Calendar](http://codeforces.com/problemset/problem/331/C1)|Codeforces||ABBYY Cup 3.0 - Finals (online version)|5|\n|<ul><li>- [ ] Done</li></ul>|708|[Ciel and Duel](http://codeforces.com/problemset/problem/321/B)|Codeforces||Codeforces Round #190 (Div. 1) & Codeforces Round #190 (Div. 2)|5|\n|<ul><li>- [ ] Done</li></ul>|709|[Connected Components](http://codeforces.com/problemset/problem/292/D)|Codeforces||Croc Champ 2013 - Round 1|5|\n|<ul><li>- [ ] Done</li></ul>|710|[Choosing Balls](http://codeforces.com/problemset/problem/264/C)|Codeforces||Codeforces Round #162 (Div. 1) & Codeforces Round #162 (Div. 2)|5|\n|<ul><li>- [ ] Done</li></ul>|711|[Lucky Tree](http://codeforces.com/problemset/problem/109/C)|Codeforces||Codeforces Beta Round #84 (Div. 1 Only) & Codeforces Beta Round #84 (Div. 2 Only)|5|\n|<ul><li>- [ ] Done</li></ul>|712|[Iahub and Permutations](http://codeforces.com/problemset/problem/340/E)|Codeforces||Codeforces Round #198 (Div. 2) & Codeforces Round #198 (Div. 1)|5|\n|<ul><li>- [ ] Done</li></ul>|713|[The Unreal Tournament](https://uva.onlinejudge.org/index.php?option=onlinejudge&page=show_problem&problem=1148)|UVA|||5|\n|<ul><li>- [ ] Done</li></ul>|714|[Bear and Tower of Cubes](http://codeforces.com/problemset/problem/679/B)|Codeforces||Codeforces Round #356 (Div. 1) & Codeforces Round #356 (Div. 2)|5|\n|<ul><li>- [ ] Done</li></ul>|715|[Alyona and Strings](http://codeforces.com/problemset/problem/682/D)|Codeforces||Codeforces Round #358 (Div. 2)|5|\n|<ul><li>- [ ] Done</li></ul>|716|[Sum](http://codeforces.com/problemset/problem/49/B)|Codeforces||Codeforces Beta Round #46 (Div. 2)|5|\n|<ul><li>- [ ] Done</li></ul>|717|[Longest Increasing Sequence](https://uva.onlinejudge.org/index.php?option=onlinejudge&page=show_problem&problem=2494)|UVA|||5|\n|<ul><li>- [ ] Done</li></ul>|718|[Mario Kart](p?ID=12)|A2 Online Judge|||5|\n|<ul><li>- [ ] Done</li></ul>|719|[Berzerk](http://codeforces.com/problemset/problem/786/A)|Codeforces||Codeforces Round #406 (Div. 1) & Codeforces Round #406 (Div. 2)|5|\n|<ul><li>- [ ] Done</li></ul>|720|[The Bakery](http://codeforces.com/problemset/problem/833/B)|Codeforces||Codeforces Round #426 (Div. 1) & Codeforces Round #426 (Div. 2)|5|\n|<ul><li>- [ ] Done</li></ul>|721|[An overnight dance in discotheque](http://codeforces.com/problemset/problem/814/D)|Codeforces||Codeforces Round #418 (Div. 2)|5|\n|<ul><li>- [ ] Done</li></ul>|722|[Hanoi Factory](http://codeforces.com/problemset/problem/777/E)|Codeforces||Codeforces Round #401 (Div. 2)|5|\n|<ul><li>- [ ] Done</li></ul>|723|[Square Subsets](http://codeforces.com/problemset/problem/895/C)|Codeforces||Codeforces Round #448 (Div. 2)|5|\n|<ul><li>- [ ] Done</li></ul>|724|[Winter is here](http://codeforces.com/problemset/problem/839/D)|Codeforces||Codeforces Round #428 (Div. 2)|5|\n|<ul><li>- [ ] Done</li></ul>|725|[Covering Sets](http://www.codechef.com/problems/COVERING)|CodeChef|||5|\n|<ul><li>- [ ] Done</li></ul>|726|[HexagonalBattlefield](http://community.topcoder.com/stat?c=problem_statement&pm=10549)|TopCoder||SRM 449 - Div1 medium] (13903)|5|\n|<ul><li>- [ ] Done</li></ul>|727|[Testing the CATCHER](https://icpcarchive.ecs.baylor.edu/index.php?option=onlinejudge&page=show_problem&problem=3171)|Live Archive|1994|World Finals - Phoenix|5|\n|<ul><li>- [ ] Done</li></ul>|728|[Paint templates](http://www.spoj.com/problems/PAINTTMP/)|SPOJ|||6|\n|<ul><li>- [ ] Done</li></ul>|729|[The  Top-Code](http://www.spoj.com/problems/TOPCODE/)|SPOJ|||6|\n|<ul><li>- [ ] Done</li></ul>|730|[Game --- Mouse and Cheese](https://uva.onlinejudge.org/index.php?option=onlinejudge&page=show_problem&problem=2918)|UVA|||6|\n|<ul><li>- [ ] Done</li></ul>|731|[Bracket Sequence](http://www.spoj.com/problems/LEXBRAC/)|SPOJ|||6|\n|<ul><li>- [ ] Done</li></ul>|732|[Incrementing The Integer](http://www.spoj.com/problems/ININT/)|SPOJ|||6|\n|<ul><li>- [ ] Done</li></ul>|733|[Mystic  Craft](http://www.spoj.com/problems/MYSTIC/)|SPOJ|||6|\n|<ul><li>- [ ] Done</li></ul>|734|[Little Elephant and Elections](http://codeforces.com/problemset/problem/258/B)|Codeforces||Codeforces Round #157 (Div. 1) & Codeforces Round #157 (Div. 2)|6|\n|<ul><li>- [ ] Done</li></ul>|735|[Let's Play Osu!](http://codeforces.com/problemset/problem/235/B)|Codeforces||Codeforces Round #146 (Div. 1) & Codeforces Round #146 (Div. 2)|6|\n|<ul><li>- [ ] Done</li></ul>|736|[Fence](http://codeforces.com/problemset/problem/234/F)|Codeforces||Codeforces Round #145 (Div. 2, ACM-ICPC Rules) & Codeforces Round #145 (Div. 1, ACM-ICPC Rules)|6|\n|<ul><li>- [ ] Done</li></ul>|737|[Table](http://codeforces.com/problemset/problem/232/B)|Codeforces||Codeforces Round #144 (Div. 1) & Codeforces Round #144 (Div. 2)|6|\n|<ul><li>- [ ] Done</li></ul>|738|[Towers](http://codeforces.com/problemset/problem/229/D)|Codeforces||Codeforces Round #142 (Div. 1)|6|\n|<ul><li>- [ ] Done</li></ul>|739|[Decoding Genome](http://codeforces.com/problemset/problem/222/E)|Codeforces||Codeforces Round #137 (Div. 2)|6|\n|<ul><li>- [ ] Done</li></ul>|740|[Relay Race](http://codeforces.com/problemset/problem/213/C)|Codeforces||Codeforces Round #131 (Div. 1) & Codeforces Round #131 (Div. 2)|6|\n|<ul><li>- [ ] Done</li></ul>|741|[Numbers](http://codeforces.com/problemset/problem/213/B)|Codeforces||Codeforces Round #131 (Div. 1) & Codeforces Round #131 (Div. 2)|6|\n|<ul><li>- [ ] Done</li></ul>|742|[Police Station](http://codeforces.com/problemset/problem/208/C)|Codeforces||Codeforces Round #130 (Div. 2)|6|\n|<ul><li>- [ ] Done</li></ul>|743|[Solitaire](http://codeforces.com/problemset/problem/208/B)|Codeforces||Codeforces Round #130 (Div. 2)|6|\n|<ul><li>- [ ] Done</li></ul>|744|[AlgoRace](http://codeforces.com/problemset/problem/187/B)|Codeforces||Codeforces Round #119 (Div. 1) & Codeforces Round #119 (Div. 2)|6|\n|<ul><li>- [ ] Done</li></ul>|745|[File List](http://codeforces.com/problemset/problem/174/B)|Codeforces||VK Cup 2012 Round 3 (Unofficial Div. 2 Edition)|6|\n|<ul><li>- [ ] Done</li></ul>|746|[Wizards and Huge Prize](http://codeforces.com/problemset/problem/167/B)|Codeforces||Codeforces Round #114 (Div. 1) & Codeforces Round #114 (Div. 2)|6|\n|<ul><li>- [ ] Done</li></ul>|747|[Phone Talks](http://codeforces.com/problemset/problem/158/E)|Codeforces||VK Cup 2012 Qualification Round 1|6|\n|<ul><li>- [ ] Done</li></ul>|748|[Cipher](http://codeforces.com/problemset/problem/156/C)|Codeforces||Codeforces Round #110 (Div. 1) & Codeforces Round #110 (Div. 2)|6|\n|<ul><li>- [ ] Done</li></ul>|749|[Coloring Brackets](http://codeforces.com/problemset/problem/149/D)|Codeforces||Codeforces Round #106 (Div. 2)|6|\n|<ul><li>- [ ] Done</li></ul>|750|[Lucky Subsequence](http://codeforces.com/problemset/problem/145/C)|Codeforces||Codeforces Round #104 (Div. 1) & Codeforces Round #104 (Div. 2)|6|\n|<ul><li>- [ ] Done</li></ul>|751|[Palindromes](http://codeforces.com/problemset/problem/137/D)|Codeforces||Codeforces Beta Round #98 (Div. 2)|6|\n|<ul><li>- [ ] Done</li></ul>|752|[Buses](http://codeforces.com/problemset/problem/101/B)|Codeforces||Codeforces Beta Round #79 (Div. 1 Only) & Codeforces Beta Round #79 (Div. 2 Only)|6|\n|<ul><li>- [ ] Done</li></ul>|753|[Interesting Game](http://codeforces.com/problemset/problem/87/C)|Codeforces||Codeforces Beta Round #73 (Div. 1 Only) & Codeforces Beta Round #73 (Div. 2 Only)|6|\n|<ul><li>- [ ] Done</li></ul>|754|[Two out of Three](http://codeforces.com/problemset/problem/82/D)|Codeforces||Yandex.Algorithm 2011 Qualification 2|6|\n|<ul><li>- [ ] Done</li></ul>|755|[Beaver](http://codeforces.com/problemset/problem/79/C)|Codeforces||Codeforces Beta Round #71|6|\n|<ul><li>- [ ] Done</li></ul>|756|[Beaver Game](http://codeforces.com/problemset/problem/78/C)|Codeforces||Codeforces Beta Round #70 (Div. 2)|6|\n|<ul><li>- [ ] Done</li></ul>|757|[Train](http://codeforces.com/problemset/problem/74/B)|Codeforces||Codeforces Beta Round #68|6|\n|<ul><li>- [ ] Done</li></ul>|758|[Partial Teacher](http://codeforces.com/problemset/problem/67/A)|Codeforces||Manthan 2011|6|\n|<ul><li>- [ ] Done</li></ul>|759|[Beautiful numbers](http://codeforces.com/problemset/problem/55/D)|Codeforces||Codeforces Beta Round #51|6|\n|<ul><li>- [ ] Done</li></ul>|760|[Anfisa the Monkey](http://codeforces.com/problemset/problem/44/E)|Codeforces||School Team Contest #2 (Winter Computer School 2010/11)|6|\n|<ul><li>- [ ] Done</li></ul>|761|[Let's Go Rolling!](http://codeforces.com/problemset/problem/38/E)|Codeforces||School Personal Contest #1 (Winter Computer School 2010/11) - Codeforces Beta Round #38 (ACM-ICPC Rules)|6|\n|<ul><li>- [ ] Done</li></ul>|762|[Animals](http://codeforces.com/problemset/problem/35/D)|Codeforces||Codeforces Beta Round #35 (Div. 2)|6|\n|<ul><li>- [ ] Done</li></ul>|763|[Wonderful Randomized Sum](http://codeforces.com/problemset/problem/33/C)|Codeforces||Codeforces Beta Round #33 (Codeforces format)|6|\n|<ul><li>- [ ] Done</li></ul>|764|[Shooting Gallery](http://codeforces.com/problemset/problem/30/C)|Codeforces||Codeforces Beta Round #30 (Codeforces format)|6|\n|<ul><li>- [ ] Done</li></ul>|765|[Stripe 2](http://codeforces.com/problemset/problem/21/C)|Codeforces||Codeforces Alpha Round #21 (Codeforces format)|6|\n|<ul><li>- [ ] Done</li></ul>|766|[Fish](http://codeforces.com/problemset/problem/16/E)|Codeforces||Codeforces Beta Round #16 (Div. 2 Only)|6|\n|<ul><li>- [ ] Done</li></ul>|767|[LCIS](http://codeforces.com/problemset/problem/10/D)|Codeforces||Codeforces Beta Round #10|6|\n|<ul><li>- [ ] Done</li></ul>|768|[Cinema Cashier](http://codeforces.com/problemset/problem/10/B)|Codeforces||Codeforces Beta Round #10|6|\n|<ul><li>- [ ] Done</li></ul>|769|[Looking for Order](http://codeforces.com/problemset/problem/8/C)|Codeforces||Codeforces Beta Round #8|6|\n|<ul><li>- [ ] Done</li></ul>|770|[Lizards and Basements 2](http://codeforces.com/problemset/problem/6/D)|Codeforces||Codeforces Beta Round #6 (Div. 2 Only)|6|\n|<ul><li>- [ ] Done</li></ul>|771|[ACM Diagnostics](http://acm.timus.ru/problem.aspx?space=1&num=1310)|Timus|||6|\n|<ul><li>- [ ] Done</li></ul>|772|[Martian Army](http://acm.timus.ru/problem.aspx?space=1&num=1472)|Timus|||6|\n|<ul><li>- [ ] Done</li></ul>|773|[Eating High](http://acm.timus.ru/problem.aspx?space=1&num=1570)|Timus|||6|\n|<ul><li>- [ ] Done</li></ul>|774|[Decimation](http://acm.timus.ru/problem.aspx?space=1&num=1611)|Timus|||6|\n|<ul><li>- [ ] Done</li></ul>|775|[Salary for Robots](http://acm.timus.ru/problem.aspx?space=1&num=1696)|Timus|||6|\n|<ul><li>- [ ] Done</li></ul>|776|[Alternative Solution](http://acm.timus.ru/problem.aspx?space=1&num=1716)|Timus|||6|\n|<ul><li>- [ ] Done</li></ul>|777|[Brainwashing Device](http://acm.timus.ru/problem.aspx?space=1&num=1900)|Timus|||6|\n|<ul><li>- [ ] Done</li></ul>|778|[Plants vs. Zombies HD SP](https://uva.onlinejudge.org/index.php?option=onlinejudge&page=show_problem&problem=3883)|UVA|||6|\n|<ul><li>- [ ] Done</li></ul>|779|[Eleven](https://uva.onlinejudge.org/index.php?option=onlinejudge&page=show_problem&problem=4410)|UVA|||6|\n|<ul><li>- [ ] Done</li></ul>|780|[Ciel and Gondolas](http://codeforces.com/problemset/problem/321/E)|Codeforces||Codeforces Round #190 (Div. 1)|6|\n|<ul><li>- [ ] Done</li></ul>|781|[MagicNaming](http://community.topcoder.com/stat?c=problem_statement&pm=11674)|TopCoder||SRM 526.5 - Div2 hard] (14762)|6|\n|<ul><li>- [ ] Done</li></ul>|782|[Sort that Queue](https://icpcarchive.ecs.baylor.edu/index.php?option=onlinejudge&page=show_problem&problem=1537)|Live Archive|2005|Africa/Middle East - Arab and North Africa|6|\n|<ul><li>- [ ] Done</li></ul>|783|[Oil Skimming](p?ID=222)|A2 Online Judge|||6|\n|<ul><li>- [ ] Done</li></ul>|784|[Common Palindrome](https://uva.onlinejudge.org/index.php?option=onlinejudge&page=show_problem&problem=3917)|UVA|||6|\n|<ul><li>- [ ] Done</li></ul>|785|[Summing Slopes](http://www.spoj.com/problems/SUMSLOPE/)|SPOJ|||6|\n|<ul><li>- [ ] Done</li></ul>|786|[Maximum Sub-sequence Product](https://icpcarchive.ecs.baylor.edu/index.php?option=onlinejudge&page=show_problem&problem=3284)|Live Archive|1996|Europe - Southeastern|6|\n|<ul><li>- [ ] Done</li></ul>|787|[The Maths Lecture](http://codeforces.com/problemset/problem/507/D)|Codeforces||Codeforces Round #287 (Div. 2)|6|\n|<ul><li>- [ ] Done</li></ul>|788|[Longest Common Subsequence](http://www.spoj.com/problems/LCS0/)|SPOJ|||6|\n|<ul><li>- [ ] Done</li></ul>|789|[Snakes](p?ID=284)|A2 Online Judge|||6|\n|<ul><li>- [ ] Done</li></ul>|790|[Table Compression](http://codeforces.com/problemset/problem/650/C)|Codeforces||Codeforces Round #345 (Div. 1) & Codeforces Round #345 (Div. 2)|6|\n|<ul><li>- [ ] Done</li></ul>|791|[Magic Numbers](http://codeforces.com/problemset/problem/628/D)|Codeforces||Educational Codeforces Round 8|6|\n|<ul><li>- [ ] Done</li></ul>|792|[Group Projects](http://codeforces.com/problemset/problem/626/F)|Codeforces||8VC Venture Cup 2016 - Elimination Round|6|\n|<ul><li>- [ ] Done</li></ul>|793|[Array GCD](http://codeforces.com/problemset/problem/623/B)|Codeforces||AIM Tech Round (Div. 1) & AIM Tech Round (Div. 2)|6|\n|<ul><li>- [ ] Done</li></ul>|794|[Hamiltonian Spanning Tree](http://codeforces.com/problemset/problem/618/D)|Codeforces||Wunder Fund Round 2016 (Div. 1 + Div. 2 combined)|6|\n|<ul><li>- [ ] Done</li></ul>|795|[Subsequences](http://codeforces.com/problemset/problem/597/C)|Codeforces||Testing Round #12|6|\n|<ul><li>- [ ] Done</li></ul>|796|[Duff in Beach](http://codeforces.com/problemset/problem/587/B)|Codeforces||Codeforces Round #326 (Div. 1) & Codeforces Round #326 (Div. 2)|6|\n|<ul><li>- [ ] Done</li></ul>|797|[Pig and Palindromes](http://codeforces.com/problemset/problem/570/E)|Codeforces||Codeforces Round #316 (Div. 2)|6|\n|<ul><li>- [ ] Done</li></ul>|798|[Vanya and Brackets](http://codeforces.com/problemset/problem/552/E)|Codeforces||Codeforces Round #308 (Div. 2)|6|\n|<ul><li>- [ ] Done</li></ul>|799|[Road Improvement](http://codeforces.com/problemset/problem/543/D)|Codeforces||Codeforces Round #302 (Div. 1)|6|\n|<ul><li>- [ ] Done</li></ul>|800|[Demiurges Play Again](http://codeforces.com/problemset/problem/538/E)|Codeforces||Codeforces Round #300|6|\n|<ul><li>- [ ] Done</li></ul>|801|[Work Group](http://codeforces.com/problemset/problem/533/B)|Codeforces||VK Cup 2015 - Round 2 (unofficial online mirror, Div. 1 only)|6|\n|<ul><li>- [ ] Done</li></ul>|802|[Anya and Cubes](http://codeforces.com/problemset/problem/525/E)|Codeforces||Codeforces Round #297 (Div. 2)|6|\n|<ul><li>- [ ] Done</li></ul>|803|[???? ?? ?????? - 2 (round version)](http://codeforces.com/problemset/problem/524/B)|Codeforces||VK Cup 2015 - Round 1|6|\n|<ul><li>- [ ] Done</li></ul>|804|[Pluses everywhere](http://codeforces.com/problemset/problem/520/E)|Codeforces||Codeforces Round #295 (Div. 2) & Codeforces Round #295 (Div. 1)|6|\n|<ul><li>- [ ] Done</li></ul>|805|[Arthur and Brackets](http://codeforces.com/problemset/problem/508/E)|Codeforces||Codeforces Round #288 (Div. 2)|6|\n|<ul><li>- [ ] Done</li></ul>|806|[New Year Domino](http://codeforces.com/problemset/problem/500/E)|Codeforces||Good Bye 2014|6|\n|<ul><li>- [ ] Done</li></ul>|807|[Special Matrices](http://codeforces.com/problemset/problem/489/F)|Codeforces||Codeforces Round #277.5 (Div. 2)|6|\n|<ul><li>- [ ] Done</li></ul>|808|[LIS of Sequence](http://codeforces.com/problemset/problem/486/E)|Codeforces||Codeforces Round #277 (Div. 2)|6|\n|<ul><li>- [ ] Done</li></ul>|809|[Kindergarten](http://codeforces.com/problemset/problem/484/D)|Codeforces||Codeforces Round #276 (Div. 1)|6|\n|<ul><li>- [ ] Done</li></ul>|810|[Dreamoon and Strings](http://codeforces.com/problemset/problem/476/E)|Codeforces||Codeforces Round #272 (Div. 2) & Codeforces Round #272 (Div. 1)|6|\n|<ul><li>- [ ] Done</li></ul>|811|[Fedor and Essay](http://codeforces.com/problemset/problem/467/D)|Codeforces||Codeforces Round #267 (Div. 2)|6|\n|<ul><li>- [ ] Done</li></ul>|812|[Substitutes in Number](http://codeforces.com/problemset/problem/464/C)|Codeforces||Codeforces Round #265 (Div. 1) & Codeforces Round #265 (Div. 2)|6|\n|<ul><li>- [ ] Done</li></ul>|813|[Jzzhu and Numbers](http://codeforces.com/problemset/problem/449/D)|Codeforces||Codeforces Round #257 (Div. 1)|6|\n|<ul><li>- [ ] Done</li></ul>|814|[Random Task](http://codeforces.com/problemset/problem/431/D)|Codeforces||Codeforces Round #247 (Div. 2)|6|\n|<ul><li>- [ ] Done</li></ul>|815|[Match & Catch](http://codeforces.com/problemset/problem/427/D)|Codeforces||Codeforces Round #244 (Div. 2)|6|\n|<ul><li>- [ ] Done</li></ul>|816|[Cunning Gena](http://codeforces.com/problemset/problem/417/D)|Codeforces||RCC 2014 Warmup (Div. 2) & RCC 2014 Warmup (Div. 1)|6|\n|<ul><li>- [ ] Done</li></ul>|817|[Minesweeper 1D](http://codeforces.com/problemset/problem/404/D)|Codeforces||Codeforces Round #237 (Div. 2)|6|\n|<ul><li>- [ ] Done</li></ul>|818|[New Year Letter](http://codeforces.com/problemset/problem/379/D)|Codeforces||Good Bye 2013|6|\n|<ul><li>- [ ] Done</li></ul>|819|[Watching Fireworks is Fun](http://codeforces.com/problemset/problem/372/C)|Codeforces||Codeforces Round #219 (Div. 1) & Codeforces Round #219 (Div. 2)|6|\n|<ul><li>- [ ] Done</li></ul>|820|[Insertion Sort](http://codeforces.com/problemset/problem/362/C)|Codeforces||Codeforces Round #212 (Div. 2)|6|\n|<ul><li>- [ ] Done</li></ul>|821|[Palindrome](http://codeforces.com/problemset/problem/335/B)|Codeforces||MemSQL start[c]up Round 2 - online version|6|\n|<ul><li>- [ ] Done</li></ul>|822|[EKG](http://codeforces.com/problemset/problem/316/B2)|Codeforces||ABBYY Cup 3.0|6|\n|<ul><li>- [ ] Done</li></ul>|823|[Sereja and Subsequences](http://codeforces.com/problemset/problem/314/C)|Codeforces||Codeforces Round #187 (Div. 1) & Codeforces Round #187 (Div. 2)|6|\n|<ul><li>- [ ] Done</li></ul>|824|[Ilya and Roads](http://codeforces.com/problemset/problem/313/D)|Codeforces||Codeforces Round #186 (Div. 2)|6|\n|<ul><li>- [ ] Done</li></ul>|825|[Greg and Friends](http://codeforces.com/problemset/problem/295/C)|Codeforces||Codeforces Round #179 (Div. 1) & Codeforces Round #179 (Div. 2)|6|\n|<ul><li>- [ ] Done</li></ul>|826|[Permutation Sum](http://codeforces.com/problemset/problem/285/D)|Codeforces||Codeforces Round #175 (Div. 2)|6|\n|<ul><li>- [ ] Done</li></ul>|827|[Yet Another Number Game](http://codeforces.com/problemset/problem/282/D)|Codeforces||Codeforces Round #173 (Div. 2)|6|\n|<ul><li>- [ ] Done</li></ul>|828|[Maxim and Restaurant](http://codeforces.com/problemset/problem/261/B)|Codeforces||Codeforces Round #160 (Div. 1) & Codeforces Round #160 (Div. 2)|6|\n|<ul><li>- [ ] Done</li></ul>|829|[Little Elephant and LCM](http://codeforces.com/problemset/problem/258/C)|Codeforces||Codeforces Round #157 (Div. 1) & Codeforces Round #157 (Div. 2)|6|\n|<ul><li>- [ ] Done</li></ul>|830|[Two Strings](http://codeforces.com/problemset/problem/223/B)|Codeforces||Codeforces Round #138 (Div. 1) & Codeforces Round #138 (Div. 2)|6|\n|<ul><li>- [ ] Done</li></ul>|831|[Trains and Statistic](http://codeforces.com/problemset/problem/675/E)|Codeforces||Codeforces Round #353 (Div. 2)|6|\n|<ul><li>- [ ] Done</li></ul>|832|[Least Common Multiple](https://icpcarchive.ecs.baylor.edu/index.php?option=onlinejudge&page=show_problem&problem=4795)|Live Archive|2014|South Pacific|6|\n|<ul><li>- [ ] Done</li></ul>|833|[Segment Tree](http://www.spoj.com/problems/SEGTREE/)|SPOJ|||6|\n|<ul><li>- [ ] Done</li></ul>|834|[Leha and another game about graph](http://codeforces.com/problemset/problem/840/B)|Codeforces||Codeforces Round #429 (Div. 1) & Codeforces Round #429 (Div. 2)|6|\n|<ul><li>- [ ] Done</li></ul>|835|[Sonya and Problem Wihtout a Legend](http://codeforces.com/problemset/problem/713/C)|Codeforces||Codeforces Round #371 (Div. 1) & Codeforces Round #371 (Div. 2)|6|\n|<ul><li>- [ ] Done</li></ul>|836|[Karen and Supermarket](http://codeforces.com/problemset/problem/815/C)|Codeforces||Codeforces Round #419 (Div. 1) & Codeforces Round #419 (Div. 2)|6|\n|<ul><li>- [ ] Done</li></ul>|837|[Unusual Sequences](http://codeforces.com/problemset/problem/900/D)|Codeforces||Codeforces Round #450 (Div. 2)|6|\n|<ul><li>- [ ] Done</li></ul>|838|[Okabe and El Psy Kongroo](http://codeforces.com/problemset/problem/821/E)|Codeforces||Codeforces Round #420 (Div. 2)|6|\n|<ul><li>- [ ] Done</li></ul>|839|[Memory and Scores](http://codeforces.com/problemset/problem/712/D)|Codeforces||Codeforces Round #370 (Div. 2)|6|\n|<ul><li>- [ ] Done</li></ul>|840|[Mahmoud and a xor trip](http://codeforces.com/problemset/problem/766/E)|Codeforces||Codeforces Round #396 (Div. 2)|6|\n|<ul><li>- [ ] Done</li></ul>|841|[Vladik and cards](http://codeforces.com/problemset/problem/743/E)|Codeforces||Codeforces Round #384 (Div. 2)|6|\n|<ul><li>- [ ] Done</li></ul>|842|[Dynamic Problem Scoring](http://codeforces.com/problemset/problem/773/B)|Codeforces||VK Cup 2017 - Round 3|6|\n|<ul><li>- [ ] Done</li></ul>|843|[Array Queries](http://codeforces.com/problemset/problem/797/E)|Codeforces||Educational Codeforces Round 19|6|\n|<ul><li>- [ ] Done</li></ul>|844|[Demogorgon](https://www.urionlinejudge.com.br/judge/en/problems/view/2532)|URI|||6|\n|<ul><li>- [ ] Done</li></ul>|845|[Save the Python Programmers!](https://icpcarchive.ecs.baylor.edu/index.php?option=onlinejudge&page=show_problem&problem=3128)|Live Archive|2010|North America - Pacific Northwest|6|\n|<ul><li>- [ ] Done</li></ul>|846|[Money for Nothing](https://icpcarchive.ecs.baylor.edu/index.php?option=onlinejudge&page=show_problem&problem=6064)|Live Archive|2017|World Finals - Rapid City|6|\n|<ul><li>- [ ] Done</li></ul>|847|[Jill Rides Again](https://icpcarchive.ecs.baylor.edu/index.php?option=onlinejudge&page=show_problem&problem=3194)|Live Archive|1997|World Finals - San Jose|6|\n|<ul><li>- [ ] Done</li></ul>|848|[Colored Tiles](https://uva.onlinejudge.org/index.php?option=onlinejudge&page=show_problem&problem=2658)|UVA|||7|\n|<ul><li>- [ ] Done</li></ul>|849|[Catch Sheep](http://www.spoj.com/problems/XYYHHTT/)|SPOJ|||7|\n|<ul><li>- [ ] Done</li></ul>|850|[Two Longest Paths](https://uva.onlinejudge.org/index.php?option=onlinejudge&page=show_problem&problem=2923)|UVA|||7|\n|<ul><li>- [ ] Done</li></ul>|851|[Table Tennis](https://uva.onlinejudge.org/index.php?option=onlinejudge&page=show_problem&problem=2855)|UVA|||7|\n|<ul><li>- [ ] Done</li></ul>|852|[Number Transformation](http://codeforces.com/problemset/problem/251/C)|Codeforces||Codeforces Round #153 (Div. 1) & Codeforces Round #153 (Div. 2)|7|\n|<ul><li>- [ ] Done</li></ul>|853|[Blood Cousins Return](http://codeforces.com/problemset/problem/246/E)|Codeforces||Codeforces Round #151 (Div. 2)|7|\n|<ul><li>- [ ] Done</li></ul>|854|[World Eater Brothers](http://codeforces.com/problemset/problem/238/C)|Codeforces||Codeforces Round #148 (Div. 1) & Codeforces Round #148 (Div. 2)|7|\n|<ul><li>- [ ] Done</li></ul>|855|[Cactus](http://codeforces.com/problemset/problem/231/E)|Codeforces||Codeforces Round #143 (Div. 2)|7|\n|<ul><li>- [ ] Done</li></ul>|856|[Fragile Bridges](http://codeforces.com/problemset/problem/201/C)|Codeforces||Codeforces Round #127 (Div. 1) & Codeforces Round #127 (Div. 2)|7|\n|<ul><li>- [ ] Done</li></ul>|857|[Wooden Fence](http://codeforces.com/problemset/problem/182/E)|Codeforces||Codeforces Round #117 (Div. 2)|7|\n|<ul><li>- [ ] Done</li></ul>|858|[Cubes](http://codeforces.com/problemset/problem/180/E)|Codeforces||Codeforces Round #116 (Div. 2, ACM-ICPC Rules)|7|\n|<ul><li>- [ ] Done</li></ul>|859|[Word Cut](http://codeforces.com/problemset/problem/176/B)|Codeforces||Croc Champ 2012 - Round 2|7|\n|<ul><li>- [ ] Done</li></ul>|860|[Spiral Maximum](http://codeforces.com/problemset/problem/173/C)|Codeforces||Croc Champ 2012 - Round 1|7|\n|<ul><li>- [ ] Done</li></ul>|861|[Education Reform](http://codeforces.com/problemset/problem/119/C)|Codeforces||Codeforces Beta Round #90|7|\n|<ul><li>- [ ] Done</li></ul>|862|[Petya and Spiders](http://codeforces.com/problemset/problem/111/C)|Codeforces||Codeforces Beta Round #85 (Div. 1 Only) & Codeforces Beta Round #85 (Div. 2 Only)|7|\n|<ul><li>- [ ] Done</li></ul>|863|[Lucky Country](http://codeforces.com/problemset/problem/95/E)|Codeforces||Codeforces Beta Round #77 (Div. 1 Only)|7|\n|<ul><li>- [ ] Done</li></ul>|864|[Lucky Numbers](http://codeforces.com/problemset/problem/95/B)|Codeforces||Codeforces Beta Round #77 (Div. 1 Only)|7|\n|<ul><li>- [ ] Done</li></ul>|865|[Beavermuncher-0xFF](http://codeforces.com/problemset/problem/77/C)|Codeforces||Codeforces Beta Round #69 (Div. 1 Only) & Codeforces Beta Round #69 (Div. 2 Only)|7|\n|<ul><li>- [ ] Done</li></ul>|866|[Big Maximum Sum](http://codeforces.com/problemset/problem/75/D)|Codeforces||Codeforces Beta Round #67 (Div. 2)|7|\n|<ul><li>- [ ] Done</li></ul>|867|[LionAge II](http://codeforces.com/problemset/problem/73/C)|Codeforces||Codeforces Beta Round #66|7|\n|<ul><li>- [ ] Done</li></ul>|868|[Dot](http://codeforces.com/problemset/problem/69/D)|Codeforces||Codeforces Beta Round #63 (Div. 2)|7|\n|<ul><li>- [ ] Done</li></ul>|869|[Optical Experiment](http://codeforces.com/problemset/problem/67/D)|Codeforces||Manthan 2011|7|\n|<ul><li>- [ ] Done</li></ul>|870|[Changing a String](http://codeforces.com/problemset/problem/56/D)|Codeforces||Codeforces Beta Round #52 (Div. 2)|7|\n|<ul><li>- [ ] Done</li></ul>|871|[First Digit Law](http://codeforces.com/problemset/problem/54/C)|Codeforces||Codeforces Beta Round #50|7|\n|<ul><li>- [ ] Done</li></ul>|872|[Right Triangles](http://codeforces.com/problemset/problem/52/B)|Codeforces||Codeforces Testing Round #1|7|\n|<ul><li>- [ ] Done</li></ul>|873|[Comb](http://codeforces.com/problemset/problem/46/E)|Codeforces||School Personal Contest #2 (Winter Computer School 2010/11) - Codeforces Beta Round #43 (ACM-ICPC Rules)|7|\n|<ul><li>- [ ] Done</li></ul>|874|[Phone Number](http://codeforces.com/problemset/problem/44/H)|Codeforces||School Team Contest #2 (Winter Computer School 2010/11)|7|\n|<ul><li>- [ ] Done</li></ul>|875|[Pawn](http://codeforces.com/problemset/problem/41/D)|Codeforces||Codeforces Beta Round #40 (Div. 2)|7|\n|<ul><li>- [ ] Done</li></ul>|876|[TV Game](http://codeforces.com/problemset/problem/31/E)|Codeforces||Codeforces Beta Round #31 (Div. 2, Codeforces format)|7|\n|<ul><li>- [ ] Done</li></ul>|877|[Seller Bob](http://codeforces.com/problemset/problem/18/D)|Codeforces||Codeforces Beta Round #18 (Div. 2 Only)|7|\n|<ul><li>- [ ] Done</li></ul>|878|[Camels](http://codeforces.com/problemset/problem/14/E)|Codeforces||Codeforces Beta Round #14 (Div. 2)|7|\n|<ul><li>- [ ] Done</li></ul>|879|[Lost in Space](http://acm.timus.ru/problem.aspx?space=1&num=1171)|Timus|||7|\n|<ul><li>- [ ] Done</li></ul>|880|[Archer's Travel](http://acm.timus.ru/problem.aspx?space=1&num=1459)|Timus|||7|\n|<ul><li>- [ ] Done</li></ul>|881|[Lunar Code](http://acm.timus.ru/problem.aspx?space=1&num=1476)|Timus|||7|\n|<ul><li>- [ ] Done</li></ul>|882|[Martian Plates](http://acm.timus.ru/problem.aspx?space=1&num=1526)|Timus|||7|\n|<ul><li>- [ ] Done</li></ul>|883|[Brainfuck](http://acm.timus.ru/problem.aspx?space=1&num=1552)|Timus|||7|\n|<ul><li>- [ ] Done</li></ul>|884|[Join](http://acm.timus.ru/problem.aspx?space=1&num=1627)|Timus|||7|\n|<ul><li>- [ ] Done</li></ul>|885|[Yet Another Answer](http://acm.timus.ru/problem.aspx?space=1&num=1745)|Timus|||7|\n|<ul><li>- [ ] Done</li></ul>|886|[TheProgrammingContestDivOne](http://community.topcoder.com/stat?c=problem_statement&pm=11357)|TopCoder||SRM 502 - Div1 medium] (14431)|7|\n|<ul><li>- [ ] Done</li></ul>|887|[Cats Transport](http://codeforces.com/problemset/problem/311/B)|Codeforces||Codeforces Round #185 (Div. 1) & Codeforces Round #185 (Div. 2)|7|\n|<ul><li>- [ ] Done</li></ul>|888|[Playing War](https://uva.onlinejudge.org/index.php?option=onlinejudge&page=show_problem&problem=2002)|UVA|||7|\n|<ul><li>- [ ] Done</li></ul>|889|[Merry-go-round](http://acm.timus.ru/problem.aspx?space=1&num=1817)|Timus|||7|\n|<ul><li>- [ ] Done</li></ul>|890|[Yet Another Assignment Problem](http://www.spoj.com/problems/ASSIGN5/)|SPOJ|||7|\n|<ul><li>- [ ] Done</li></ul>|891|[Component Testing](https://icpcarchive.ecs.baylor.edu/index.php?option=onlinejudge&page=show_problem&problem=4204)|Live Archive|2012|North America - Mid-Atlantic USA & North America - Southern California & North America - Southeast USA|7|\n|<ul><li>- [ ] Done</li></ul>|892|[Genetic Engineering](http://codeforces.com/problemset/problem/391/A)|Codeforces||Rockethon 2014|7|\n|<ul><li>- [ ] Done</li></ul>|893|[Duckindromes](https://uva.onlinejudge.org/index.php?option=onlinejudge&page=show_problem&problem=4970)|UVA|||7|\n|<ul><li>- [ ] Done</li></ul>|894|[Binary Table](http://codeforces.com/problemset/problem/662/C)|Codeforces||CROC 2016 - Final Round [Private, For Onsite Finalists Only]|7|\n|<ul><li>- [ ] Done</li></ul>|895|[Fence Divercity](http://codeforces.com/problemset/problem/659/G)|Codeforces||Codeforces Round #346 (Div. 2)|7|\n|<ul><li>- [ ] Done</li></ul>|896|[Zip-line](http://codeforces.com/problemset/problem/650/D)|Codeforces||Codeforces Round #345 (Div. 1)|7|\n|<ul><li>- [ ] Done</li></ul>|897|[Intellectual Inquiry](http://codeforces.com/problemset/problem/645/E)|Codeforces||CROC 2016 - Elimination Round|7|\n|<ul><li>- [ ] Done</li></ul>|898|[Little Artem and Random Variable](http://codeforces.com/problemset/problem/641/D)|Codeforces||VK Cup 2016 - Round 2|7|\n|<ul><li>- [ ] Done</li></ul>|899|[Thief in a Shop](http://codeforces.com/problemset/problem/632/E)|Codeforces||Educational Codeforces Round 9|7|\n|<ul><li>- [ ] Done</li></ul>|900|[Product Sum](http://codeforces.com/problemset/problem/631/E)|Codeforces||Codeforces Round #344 (Div. 2)|7|\n|<ul><li>- [ ] Done</li></ul>|901|[Famil Door and Roads](http://codeforces.com/problemset/problem/629/E)|Codeforces||Codeforces Round #343 (Div. 2)|7|\n|<ul><li>- [ ] Done</li></ul>|902|[Kleofáš and the n-thlon](http://codeforces.com/problemset/problem/601/C)|Codeforces||Codeforces Round #333 (Div. 1) & Codeforces Round #333 (Div. 2)|7|\n|<ul><li>- [ ] Done</li></ul>|903|[Top Secret Task](http://codeforces.com/problemset/problem/590/D)|Codeforces||Codeforces Round #327 (Div. 1)|7|\n|<ul><li>- [ ] Done</li></ul>|904|[Bulbo](http://codeforces.com/problemset/problem/575/F)|Codeforces||Bubble Cup 8 - Finals [Online Mirror]|7|\n|<ul><li>- [ ] Done</li></ul>|905|[Ann and Half-Palindrome](http://codeforces.com/problemset/problem/557/E)|Codeforces||Codeforces Round #311 (Div. 2)|7|\n|<ul><li>- [ ] Done</li></ul>|906|[Remembering Strings](http://codeforces.com/problemset/problem/543/C)|Codeforces||Codeforces Round #302 (Div. 1) & Codeforces Round #302 (Div. 2)|7|\n|<ul><li>- [ ] Done</li></ul>|907|[Quest](http://codeforces.com/problemset/problem/542/F)|Codeforces||VK Cup 2015 - Round 3 (unofficial online mirror, Div. 1 only)|7|\n|<ul><li>- [ ] Done</li></ul>|908|[Transmitting Levels](http://codeforces.com/problemset/problem/526/E)|Codeforces||ZeptoLab Code Rush 2015|7|\n|<ul><li>- [ ] Done</li></ul>|909|[Darth Vader and Tree](http://codeforces.com/problemset/problem/514/E)|Codeforces||Codeforces Round #291 (Div. 2)|7|\n|<ul><li>- [ ] Done</li></ul>|910|[Traffic Jams in the Land](http://codeforces.com/problemset/problem/498/D)|Codeforces||Codeforces Round #284 (Div. 1)|7|\n|<ul><li>- [ ] Done</li></ul>|911|[Name That Tune](http://codeforces.com/problemset/problem/498/B)|Codeforces||Codeforces Round #284 (Div. 1) & Codeforces Round #284 (Div. 2)|7|\n|<ul><li>- [ ] Done</li></ul>|912|[Treeland Tour](http://codeforces.com/problemset/problem/490/F)|Codeforces||Codeforces Round #279 (Div. 2)|7|\n|<ul><li>- [ ] Done</li></ul>|913|[Hiking](http://codeforces.com/problemset/problem/489/E)|Codeforces||Codeforces Round #277.5 (Div. 2)|7|\n|<ul><li>- [ ] Done</li></ul>|914|[Devu and Birthday Celebration](http://codeforces.com/problemset/problem/439/E)|Codeforces||Codeforces Round #251 (Div. 2)|7|\n|<ul><li>- [ ] Done</li></ul>|915|[Special Grid](http://codeforces.com/problemset/problem/435/D)|Codeforces||Codeforces Round #249 (Div. 2)|7|\n|<ul><li>- [ ] Done</li></ul>|916|[Guess the Tree](http://codeforces.com/problemset/problem/429/C)|Codeforces||Codeforces Round #245 (Div. 1) & Codeforces Round #245 (Div. 2)|7|\n|<ul><li>- [ ] Done</li></ul>|917|[Sereja and Two Sequences](http://codeforces.com/problemset/problem/425/C)|Codeforces||Codeforces Round #243 (Div. 1) & Codeforces Round #243 (Div. 2)|7|\n|<ul><li>- [ ] Done</li></ul>|918|[President's Path](http://codeforces.com/problemset/problem/416/E)|Codeforces||Codeforces Round #241 (Div. 2)|7|\n|<ul><li>- [ ] Done</li></ul>|919|[Beautiful Pairs of Numbers](http://codeforces.com/problemset/problem/403/D)|Codeforces||Codeforces Round #236 (Div. 1)|7|\n|<ul><li>- [ ] Done</li></ul>|920|[Painting The Wall](http://codeforces.com/problemset/problem/398/B)|Codeforces||Codeforces Round #233 (Div. 1) & Codeforces Round #233 (Div. 2)|7|\n|<ul><li>- [ ] Done</li></ul>|921|[Captains Mode](http://codeforces.com/problemset/problem/377/C)|Codeforces||Codeforces Round #222 (Div. 1) & Codeforces Round #222 (Div. 2)|7|\n|<ul><li>- [ ] Done</li></ul>|922|[Inna and Sequence ](http://codeforces.com/problemset/problem/374/D)|Codeforces||Codeforces Round #220 (Div. 2)|7|\n|<ul><li>- [ ] Done</li></ul>|923|[Valera and Fools](http://codeforces.com/problemset/problem/369/D)|Codeforces||Codeforces Round #216 (Div. 2)|7|\n|<ul><li>- [ ] Done</li></ul>|924|[Free Market](http://codeforces.com/problemset/problem/364/B)|Codeforces||Codeforces Round #213 (Div. 1) & Codeforces Round #213 (Div. 2)|7|\n|<ul><li>- [ ] Done</li></ul>|925|[Levko and Strings](http://codeforces.com/problemset/problem/360/C)|Codeforces||Codeforces Round #210 (Div. 1) & Codeforces Round #210 (Div. 2)|7|\n|<ul><li>- [ ] Done</li></ul>|926|[Lucky Number Representation](http://codeforces.com/problemset/problem/354/E)|Codeforces||Codeforces Round #206 (Div. 1)|7|\n|<ul><li>- [ ] Done</li></ul>|927|[Axis Walking](http://codeforces.com/problemset/problem/327/E)|Codeforces||Codeforces Round #191 (Div. 2)|7|\n|<ul><li>- [ ] Done</li></ul>|928|[Game with Powers](http://codeforces.com/problemset/problem/317/D)|Codeforces||Codeforces Round #188 (Div. 1)|7|\n|<ul><li>- [ ] Done</li></ul>|929|[Yaroslav and Two Strings](http://codeforces.com/problemset/problem/296/B)|Codeforces||Codeforces Round #179 (Div. 2)|7|\n|<ul><li>- [ ] Done</li></ul>|930|[Coin Troubles](http://codeforces.com/problemset/problem/283/C)|Codeforces||Codeforces Round #174 (Div. 1) & Codeforces Round #174 (Div. 2)|7|\n|<ul><li>- [ ] Done</li></ul>|931|[Maxim and Matrix](http://codeforces.com/problemset/problem/261/C)|Codeforces||Codeforces Round #160 (Div. 1) & Codeforces Round #160 (Div. 2)|7|\n|<ul><li>- [ ] Done</li></ul>|932|[Plus and xor](http://codeforces.com/problemset/problem/76/D)|Codeforces||All-Ukrainian School Olympiad in Informatics|7|\n|<ul><li>- [ ] Done</li></ul>|933|[Game](http://codeforces.com/problemset/problem/49/D)|Codeforces||Codeforces Beta Round #46 (Div. 2)|7|\n|<ul><li>- [ ] Done</li></ul>|934|[Black and White Tree](http://codeforces.com/problemset/problem/260/D)|Codeforces||Codeforces Round #158 (Div. 2)|7|\n|<ul><li>- [ ] Done</li></ul>|935|[Nanami's Digital Board](http://codeforces.com/problemset/problem/433/D)|Codeforces||Codeforces Round #248 (Div. 2) & Codeforces Round #248 (Div. 1)|7|\n|<ul><li>- [ ] Done</li></ul>|936|[Divisor Tree](http://codeforces.com/problemset/problem/337/E)|Codeforces||Codeforces Round #196 (Div. 2) & Codeforces Round #196 (Div. 1)|7|\n|<ul><li>- [ ] Done</li></ul>|937|[Identify the Number](p?ID=32)|A2 Online Judge|||7|\n|<ul><li>- [ ] Done</li></ul>|938|[FibonacciKnapsack](http://community.topcoder.com/stat?c=problem_statement&pm=7481)|TopCoder||SRM 352 - Div1 medium] (10709)|7|\n|<ul><li>- [ ] Done</li></ul>|939|[Longest Run on a Snowboard](https://icpcarchive.ecs.baylor.edu/index.php?option=onlinejudge&page=show_problem&problem=1802)|Live Archive|2006|Asia - Coimbatore|7|\n|<ul><li>- [ ] Done</li></ul>|940|[Rent your airplane and make money](https://uva.onlinejudge.org/index.php?option=onlinejudge&page=show_problem&problem=3574)|UVA|||7|\n|<ul><li>- [ ] Done</li></ul>|941|[Hongcow Buys a Deck of Cards](http://codeforces.com/problemset/problem/744/C)|Codeforces||Codeforces Round #385 (Div. 1) & Codeforces Round #385 (Div. 2)|7|\n|<ul><li>- [ ] Done</li></ul>|942|[On the Bench](http://codeforces.com/problemset/problem/840/C)|Codeforces||Codeforces Round #429 (Div. 1) & Codeforces Round #429 (Div. 2)|7|\n|<ul><li>- [ ] Done</li></ul>|943|[Ant Man](http://codeforces.com/problemset/problem/704/B)|Codeforces||Codeforces Round #366 (Div. 1) & Codeforces Round #366 (Div. 2)|7|\n|<ul><li>- [ ] Done</li></ul>|944|[Vladik and chat](http://codeforces.com/problemset/problem/754/C)|Codeforces||Codeforces Round #390 (Div. 2)|7|\n|<ul><li>- [ ] Done</li></ul>|945|[Maximum Questions](http://codeforces.com/problemset/problem/900/E)|Codeforces||Codeforces Round #450 (Div. 2)|7|\n|<ul><li>- [ ] Done</li></ul>|946|[Ralph and Mushrooms](http://codeforces.com/problemset/problem/894/E)|Codeforces||Codeforces Round #447 (Div. 2)|7|\n|<ul><li>- [ ] Done</li></ul>|947|[Fafa and Ancient Mathematics](http://codeforces.com/problemset/problem/935/E)|Codeforces||Codeforces Round #465 (Div. 2)|7|\n|<ul><li>- [ ] Done</li></ul>|948|[Pictures with Kittens (hard version)](http://codeforces.com/problemset/problem/1077/F2)|Codeforces||Codeforces Round #521 (Div. 3)|7|\n|<ul><li>- [ ] Done</li></ul>|949|[Segment Sum](http://codeforces.com/problemset/problem/1073/E)|Codeforces||Educational Codeforces Round 53 (Rated for Div. 2)|7|\n|<ul><li>- [ ] Done</li></ul>|950|[Lannister Army](http://www.spoj.com/problems/LARMY/)|SPOJ|||7|\n|<ul><li>- [ ] Done</li></ul>|951|[Sweets Problem](http://www.codechef.com/problems/IOPC14L)|CodeChef|||7|\n|<ul><li>- [ ] Done</li></ul>|952|[Little Elephant and Broken Sorting](http://codeforces.com/problemset/problem/258/D)|Codeforces||Codeforces Round #157 (Div. 1)|8|\n|<ul><li>- [ ] Done</li></ul>|953|[Lucky Arrays](http://codeforces.com/problemset/problem/256/E)|Codeforces||Codeforces Round #156 (Div. 1)|8|\n|<ul><li>- [ ] Done</li></ul>|954|[Number Challenge](http://codeforces.com/problemset/problem/235/E)|Codeforces||Codeforces Round #146 (Div. 1)|8|\n|<ul><li>- [ ] Done</li></ul>|955|[Gifts](http://codeforces.com/problemset/problem/229/E)|Codeforces||Codeforces Round #142 (Div. 1)|8|\n|<ul><li>- [ ] Done</li></ul>|956|[Fractal Detector](http://codeforces.com/problemset/problem/228/C)|Codeforces||Codeforces Round #141 (Div. 2)|8|\n|<ul><li>- [ ] Done</li></ul>|957|[Periodical Numbers](http://codeforces.com/problemset/problem/215/E)|Codeforces||Codeforces Round #132 (Div. 2)|8|\n|<ul><li>- [ ] Done</li></ul>|958|[IT Restaurants](http://codeforces.com/problemset/problem/212/E)|Codeforces||VK Cup 2012 Finals (unofficial online-version)|8|\n|<ul><li>- [ ] Done</li></ul>|959|[Multicolored Marbles](http://codeforces.com/problemset/problem/209/A)|Codeforces||VK Cup 2012 Finals, Practice Session|8|\n|<ul><li>- [ ] Done</li></ul>|960|[Name](http://codeforces.com/problemset/problem/180/D)|Codeforces||Codeforces Round #116 (Div. 2, ACM-ICPC Rules)|8|\n|<ul><li>- [ ] Done</li></ul>|961|[Polycarpus the Safecracker](http://codeforces.com/problemset/problem/161/E)|Codeforces||VK Cup 2012 Round 1|8|\n|<ul><li>- [ ] Done</li></ul>|962|[Help Caretaker](http://codeforces.com/problemset/problem/142/C)|Codeforces||Codeforces Round #102 (Div. 1) & Codeforces Round #102 (Div. 2)|8|\n|<ul><li>- [ ] Done</li></ul>|963|[Clearing Up](http://codeforces.com/problemset/problem/141/E)|Codeforces||Codeforces Round #101 (Div. 2)|8|\n|<ul><li>- [ ] Done</li></ul>|964|[New Year Garland](http://codeforces.com/problemset/problem/140/E)|Codeforces||Codeforces Round #100|8|\n|<ul><li>- [ ] Done</li></ul>|965|[Constants in the language of Shakespeare](http://codeforces.com/problemset/problem/132/D)|Codeforces||Codeforces Beta Round #96 (Div. 1)|8|\n|<ul><li>- [ ] Done</li></ul>|966|[Fibonacci Sums](http://codeforces.com/problemset/problem/126/D)|Codeforces||Codeforces Beta Round #93 (Div. 1 Only)|8|\n|<ul><li>- [ ] Done</li></ul>|967|[Brackets](http://codeforces.com/problemset/problem/123/C)|Codeforces||Codeforces Beta Round #92 (Div. 1 Only) & Codeforces Beta Round #92 (Div. 2 Only)|8|\n|<ul><li>- [ ] Done</li></ul>|968|[Linear Kingdom Races](http://codeforces.com/problemset/problem/115/E)|Codeforces||Codeforces Beta Round #87 (Div. 1 Only)|8|\n|<ul><li>- [ ] Done</li></ul>|969|[Castle](http://codeforces.com/problemset/problem/101/D)|Codeforces||Codeforces Beta Round #79 (Div. 1 Only)|8|\n|<ul><li>- [ ] Done</li></ul>|970|[Widget Library](http://codeforces.com/problemset/problem/89/B)|Codeforces||Codeforces Beta Round #74 (Div. 1 Only) & Codeforces Beta Round #74 (Div. 2 Only)|8|\n|<ul><li>- [ ] Done</li></ul>|971|[Beautiful Road](http://codeforces.com/problemset/problem/87/D)|Codeforces||Codeforces Beta Round #73 (Div. 1 Only)|8|\n|<ul><li>- [ ] Done</li></ul>|972|[Genetic engineering](http://codeforces.com/problemset/problem/86/C)|Codeforces||Yandex.Algorithm 2011 Round 2|8|\n|<ul><li>- [ ] Done</li></ul>|973|[Numbers](http://codeforces.com/problemset/problem/83/D)|Codeforces||Codeforces Beta Round #72 (Div. 1 Only)|8|\n|<ul><li>- [ ] Done</li></ul>|974|[Password](http://codeforces.com/problemset/problem/79/D)|Codeforces||Codeforces Beta Round #71|8|\n|<ul><li>- [ ] Done</li></ul>|975|[Tourist](http://codeforces.com/problemset/problem/76/F)|Codeforces||All-Ukrainian School Olympiad in Informatics|8|\n|<ul><li>- [ ] Done</li></ul>|976|[Fibonacci army](http://codeforces.com/problemset/problem/72/G)|Codeforces||Unknown Language Round #2|8|\n|<ul><li>- [ ] Done</li></ul>|977|[Petya and Post](http://codeforces.com/problemset/problem/66/E)|Codeforces||Codeforces Beta Round #61 (Div. 2)|8|\n|<ul><li>- [ ] Done</li></ul>|978|[Sweets Game](http://codeforces.com/problemset/problem/63/E)|Codeforces||Codeforces Beta Round #59 (Div. 2)|8|\n|<ul><li>- [ ] Done</li></ul>|979|[Dead Ends](http://codeforces.com/problemset/problem/53/E)|Codeforces||Codeforces Beta Round #49 (Div. 2)|8|\n|<ul><li>- [ ] Done</li></ul>|980|[Bombing](http://codeforces.com/problemset/problem/50/D)|Codeforces||Codeforces Beta Round #47|8|\n|<ul><li>- [ ] Done</li></ul>|981|[Common ancestor](http://codeforces.com/problemset/problem/49/E)|Codeforces||Codeforces Beta Round #46 (Div. 2)|8|\n|<ul><li>- [ ] Done</li></ul>|982|[What Has Dirichlet Got to Do with That?](http://codeforces.com/problemset/problem/39/E)|Codeforces||School Team Contest #1 (Winter Computer School 2010/11)|8|\n|<ul><li>- [ ] Done</li></ul>|983|[Don't fear, DravDe is kind](http://codeforces.com/problemset/problem/28/D)|Codeforces||Codeforces Beta Round #28 (Codeforces format)|8|\n|<ul><li>- [ ] Done</li></ul>|984|[Bath Queue](http://codeforces.com/problemset/problem/28/C)|Codeforces||Codeforces Beta Round #28 (Codeforces format)|8|\n|<ul><li>- [ ] Done</li></ul>|985|[Broken robot](http://codeforces.com/problemset/problem/24/D)|Codeforces||Codeforces Beta Round #24|8|\n|<ul><li>- [ ] Done</li></ul>|986|[Tree](http://codeforces.com/problemset/problem/23/E)|Codeforces||Codeforces Beta Round #23|8|\n|<ul><li>- [ ] Done</li></ul>|987|[Flag 2](http://codeforces.com/problemset/problem/18/E)|Codeforces||Codeforces Beta Round #18 (Div. 2 Only)|8|\n|<ul><li>- [ ] Done</li></ul>|988|[Balance](http://codeforces.com/problemset/problem/17/C)|Codeforces||Codeforces Beta Round #17|8|\n|<ul><li>- [ ] Done</li></ul>|989|[Beads](http://codeforces.com/problemset/problem/8/E)|Codeforces||Codeforces Beta Round #8|8|\n|<ul><li>- [ ] Done</li></ul>|990|[Defining Macros](http://codeforces.com/problemset/problem/7/E)|Codeforces||Codeforces Beta Round #7|8|\n|<ul><li>- [ ] Done</li></ul>|991|[Yekaterinburg Subway](http://acm.timus.ru/problem.aspx?space=1&num=1267)|Timus|||8|\n|<ul><li>- [ ] Done</li></ul>|992|[Somali Pirates](http://acm.timus.ru/problem.aspx?space=1&num=1655)|Timus|||8|\n|<ul><li>- [ ] Done</li></ul>|993|[Frequent Flyer Card](http://acm.timus.ru/problem.aspx?space=1&num=1887)|Timus|||8|\n|<ul><li>- [ ] Done</li></ul>|994|[Inventory](https://uva.onlinejudge.org/index.php?option=onlinejudge&page=show_problem&problem=3689)|UVA|||8|\n|<ul><li>- [ ] Done</li></ul>|995|[One-Based Arithmetic](http://codeforces.com/problemset/problem/440/C)|Codeforces||Testing Round #10|8|\n|<ul><li>- [ ] Done</li></ul>|996|[2048](http://codeforces.com/problemset/problem/413/D)|Codeforces||Coder-Strike 2014 - Round 2|8|\n|<ul><li>- [ ] Done</li></ul>|997|[Scheme](http://codeforces.com/problemset/problem/22/E)|Codeforces||Codeforces Beta Round #22 (Div. 2 Only)|8|\n|<ul><li>- [ ] Done</li></ul>|998|[e-Government](http://codeforces.com/problemset/problem/163/E)|Codeforces||VK Cup 2012 Round 2|8|\n|<ul><li>- [ ] Done</li></ul>|999|[The Chocolate Spree](http://codeforces.com/problemset/problem/633/F)|Codeforces||Manthan, Codefest 16|8|\n|<ul><li>- [ ] Done</li></ul>|1000|[Preorder Test](http://codeforces.com/problemset/problem/627/D)|Codeforces||8VC Venture Cup 2016 - Final Round|8|\n|<ul><li>- [ ] Done</li></ul>|1001|[Wilbur and Trees](http://codeforces.com/problemset/problem/596/D)|Codeforces||Codeforces Round #331 (Div. 2)|8|\n|<ul><li>- [ ] Done</li></ul>|1002|[Zublicanes and Mumocrates](http://codeforces.com/problemset/problem/581/F)|Codeforces||Codeforces Round #322 (Div. 2)|8|\n|<ul><li>- [ ] Done</li></ul>|1003|[LCS Again](http://codeforces.com/problemset/problem/578/D)|Codeforces||Codeforces Round #320 (Div. 1) [Bayan Thanks-Round] & Codeforces Round #320 (Div. 2) [Bayan Thanks-Round]|8|\n|<ul><li>- [ ] Done</li></ul>|1004|[Flights for Regular Customers](http://codeforces.com/problemset/problem/576/D)|Codeforces||Codeforces Round #319 (Div. 1)|8|\n|<ul><li>- [ ] Done</li></ul>|1005|[Mausoleum](http://codeforces.com/problemset/problem/567/F)|Codeforces||Codeforces Round #Pi (Div. 2)|8|\n|<ul><li>- [ ] Done</li></ul>|1006|[Drazil and Morning Exercise](http://codeforces.com/problemset/problem/516/D)|Codeforces||Codeforces Round #292 (Div. 1)|8|\n|<ul><li>- [ ] Done</li></ul>|1007|[Inversions problem](http://codeforces.com/problemset/problem/513/G2)|Codeforces||Rockethon 2015|8|\n|<ul><li>- [ ] Done</li></ul>|1008|[Progress Monitoring](http://codeforces.com/problemset/problem/509/F)|Codeforces||Codeforces Round #289 (Div. 2, ACM ICPC Rules)|8|\n|<ul><li>- [ ] Done</li></ul>|1009|[Birthday](http://codeforces.com/problemset/problem/494/D)|Codeforces||Codeforces Round #282 (Div. 1)|8|\n|<ul><li>- [ ] Done</li></ul>|1010|[Helping People](http://codeforces.com/problemset/problem/494/C)|Codeforces||Codeforces Round #282 (Div. 1) & Codeforces Round #282 (Div. 2)|8|\n|<ul><li>- [ ] Done</li></ul>|1011|[Game with Strings](http://codeforces.com/problemset/problem/482/C)|Codeforces||Codeforces Round #275 (Div. 1) & Codeforces Round #275 (Div. 2)|8|\n|<ul><li>- [ ] Done</li></ul>|1012|[Parcels](http://codeforces.com/problemset/problem/480/D)|Codeforces||Codeforces Round #274 (Div. 1)|8|\n|<ul><li>- [ ] Done</li></ul>|1013|[Alex and Complicated Task](http://codeforces.com/problemset/problem/467/E)|Codeforces||Codeforces Round #267 (Div. 2)|8|\n|<ul><li>- [ ] Done</li></ul>|1014|[World of Darkraft - 2](http://codeforces.com/problemset/problem/464/D)|Codeforces||Codeforces Round #265 (Div. 1)|8|\n|<ul><li>- [ ] Done</li></ul>|1015|[Sereja and Sets](http://codeforces.com/problemset/problem/425/E)|Codeforces||Codeforces Round #243 (Div. 1)|8|\n|<ul><li>- [ ] Done</li></ul>|1016|[Biathlon Track](http://codeforces.com/problemset/problem/424/D)|Codeforces||Codeforces Round #242 (Div. 2)|8|\n|<ul><li>- [ ] Done</li></ul>|1017|[Tower of Hanoi](http://codeforces.com/problemset/problem/392/B)|Codeforces||Codeforces Round #230 (Div. 1) & Codeforces Round #230 (Div. 2)|8|\n|<ul><li>- [ ] Done</li></ul>|1018|[Diverse Substrings](http://codeforces.com/problemset/problem/386/C)|Codeforces||Testing Round #9|8|\n|<ul><li>- [ ] Done</li></ul>|1019|[Bear and Floodlight](http://codeforces.com/problemset/problem/385/D)|Codeforces||Codeforces Round #226 (Div. 2)|8|\n|<ul><li>- [ ] Done</li></ul>|1020|[Vowels](http://codeforces.com/problemset/problem/383/E)|Codeforces||Codeforces Round #225 (Div. 1)|8|\n|<ul><li>- [ ] Done</li></ul>|1021|[Sereja and Intervals](http://codeforces.com/problemset/problem/367/E)|Codeforces||Codeforces Round #215 (Div. 1)|8|\n|<ul><li>- [ ] Done</li></ul>|1022|[Bags and Coins](http://codeforces.com/problemset/problem/356/D)|Codeforces||Codeforces Round #207 (Div. 1)|8|\n|<ul><li>- [ ] Done</li></ul>|1023|[Antichain](http://codeforces.com/problemset/problem/353/E)|Codeforces||Codeforces Round #205 (Div. 2)|8|\n|<ul><li>- [ ] Done</li></ul>|1024|[Jeff and Brackets](http://codeforces.com/problemset/problem/351/C)|Codeforces||Codeforces Round #204 (Div. 1) & Codeforces Round #204 (Div. 2)|8|\n|<ul><li>- [ ] Done</li></ul>|1025|[Turtles](http://codeforces.com/problemset/problem/348/D)|Codeforces||Codeforces Round #202 (Div. 1)|8|\n|<ul><li>- [ ] Done</li></ul>|1026|[Xenia and Dominoes](http://codeforces.com/problemset/problem/342/D)|Codeforces||Codeforces Round #199 (Div. 2)|8|\n|<ul><li>- [ ] Done</li></ul>|1027|[Painting Square](http://codeforces.com/problemset/problem/300/D)|Codeforces||Codeforces Round #181 (Div. 2)|8|\n|<ul><li>- [ ] Done</li></ul>|1028|[Greg and Caves](http://codeforces.com/problemset/problem/295/D)|Codeforces||Codeforces Round #179 (Div. 1)|8|\n|<ul><li>- [ ] Done</li></ul>|1029|[Shaass the Great](http://codeforces.com/problemset/problem/294/E)|Codeforces||Codeforces Round #178 (Div. 2)|8|\n|<ul><li>- [ ] Done</li></ul>|1030|[Positions in Permutations](http://codeforces.com/problemset/problem/285/E)|Codeforces||Codeforces Round #175 (Div. 2)|8|\n|<ul><li>- [ ] Done</li></ul>|1031|[Cows and Cool Sequences](http://codeforces.com/problemset/problem/283/D)|Codeforces||Codeforces Round #174 (Div. 1)|8|\n|<ul><li>- [ ] Done</li></ul>|1032|[The Minimum Number of Variables](http://codeforces.com/problemset/problem/279/D)|Codeforces||Codeforces Round #171 (Div. 2)|8|\n|<ul><li>- [ ] Done</li></ul>|1033|[Maxim and Increasing Subsequence](http://codeforces.com/problemset/problem/261/D)|Codeforces||Codeforces Round #160 (Div. 1)|8|\n|<ul><li>- [ ] Done</li></ul>|1034|[Petya and Coloring](http://codeforces.com/problemset/problem/111/D)|Codeforces||Codeforces Beta Round #85 (Div. 1 Only)|8|\n|<ul><li>- [ ] Done</li></ul>|1035|[Triangles](http://codeforces.com/problemset/problem/13/D)|Codeforces||Codeforces Beta Round #13|8|\n|<ul><li>- [ ] Done</li></ul>|1036|[The Child and Polygon](http://codeforces.com/problemset/problem/437/E)|Codeforces||Codeforces Round #250 (Div. 2) & Codeforces Round #250 (Div. 1)|8|\n|<ul><li>- [ ] Done</li></ul>|1037|[Roads in Yusland](http://codeforces.com/problemset/problem/671/D)|Codeforces||Codeforces Round #352 (Div. 1)|8|\n|<ul><li>- [ ] Done</li></ul>|1038|[Vanya and Balloons](http://codeforces.com/problemset/problem/677/E)|Codeforces||Codeforces Round #355 (Div. 2)|8|\n|<ul><li>- [ ] Done</li></ul>|1039|[Two Melodies](http://codeforces.com/problemset/problem/813/D)|Codeforces||Educational Codeforces Round 22|8|\n|<ul><li>- [ ] Done</li></ul>|1040|[Ostap and Tree](http://codeforces.com/problemset/problem/735/E)|Codeforces||Codeforces Round #382 (Div. 2) & Codeforces Round #382 (Div. 1)|8|\n|<ul><li>- [ ] Done</li></ul>|1041|[Michael and Charging Stations](http://codeforces.com/problemset/problem/853/D)|Codeforces||Codeforces Round #433 (Div. 1, based on Olympiad of Metropolises)|8|\n|<ul><li>- [ ] Done</li></ul>|1042|[Find a car](http://codeforces.com/problemset/problem/809/C)|Codeforces||Codeforces Round #415 (Div. 1) & Codeforces Round #415 (Div. 2)|8|\n|<ul><li>- [ ] Done</li></ul>|1043|[Gosha is hunting](http://codeforces.com/problemset/problem/739/E)|Codeforces||Codeforces Round #381 (Div. 1)|8|\n|<ul><li>- [ ] Done</li></ul>|1044|[An unavoidable detour for home](http://codeforces.com/problemset/problem/814/E)|Codeforces||Codeforces Round #418 (Div. 2)|8|\n|<ul><li>- [ ] Done</li></ul>|1045|[Mishka and Divisors](http://codeforces.com/problemset/problem/703/E)|Codeforces||Codeforces Round #365 (Div. 2)|8|\n|<ul><li>- [ ] Done</li></ul>|1046|[E-The dynamic programming problem2](http://acm.tju.edu.cn/toj/showp4173.html)|TJU|||8|\n|<ul><li>- [ ] Done</li></ul>|1047|[Liars and Serge](http://codeforces.com/problemset/problem/256/D)|Codeforces||Codeforces Round #156 (Div. 1)|9|\n|<ul><li>- [ ] Done</li></ul>|1048|[Dormitory](http://codeforces.com/problemset/problem/254/E)|Codeforces||Codeforces Round #155 (Div. 2)|9|\n|<ul><li>- [ ] Done</li></ul>|1049|[Donkey and Stars](http://codeforces.com/problemset/problem/249/D)|Codeforces||Codeforces Round #152 (Div. 1)|9|\n|<ul><li>- [ ] Done</li></ul>|1050|[Piglet's Birthday](http://codeforces.com/problemset/problem/248/E)|Codeforces||Codeforces Round #152 (Div. 2) & Codeforces Round #152 (Div. 1)|9|\n|<ul><li>- [ ] Done</li></ul>|1051|[Meeting Her](http://codeforces.com/problemset/problem/238/E)|Codeforces||Codeforces Round #148 (Div. 1)|9|\n|<ul><li>- [ ] Done</li></ul>|1052|[Quick Tortoise](http://codeforces.com/problemset/problem/232/E)|Codeforces||Codeforces Round #144 (Div. 1)|9|\n|<ul><li>- [ ] Done</li></ul>|1053|[Little Elephant and Triangle](http://codeforces.com/problemset/problem/220/D)|Codeforces||Codeforces Round #136 (Div. 1)|9|\n|<ul><li>- [ ] Done</li></ul>|1054|[Formurosa](http://codeforces.com/problemset/problem/217/C)|Codeforces||Codeforces Round #134 (Div. 1) & Codeforces Round #134 (Div. 2)|9|\n|<ul><li>- [ ] Done</li></ul>|1055|[Cowboys](http://codeforces.com/problemset/problem/212/C)|Codeforces||VK Cup 2012 Finals (unofficial online-version)|9|\n|<ul><li>- [ ] Done</li></ul>|1056|[Little Elephant and Retro Strings](http://codeforces.com/problemset/problem/204/D)|Codeforces||Codeforces Round #129 (Div. 1)|9|\n|<ul><li>- [ ] Done</li></ul>|1057|[Brand New Problem](http://codeforces.com/problemset/problem/201/D)|Codeforces||Codeforces Round #127 (Div. 1)|9|\n|<ul><li>- [ ] Done</li></ul>|1058|[T-shirt](http://codeforces.com/problemset/problem/183/D)|Codeforces||Croc Champ 2012 - Final|9|\n|<ul><li>- [ ] Done</li></ul>|1059|[Hyper String](http://codeforces.com/problemset/problem/176/D)|Codeforces||Croc Champ 2012 - Round 2|9|\n|<ul><li>- [ ] Done</li></ul>|1060|[Power Defence](http://codeforces.com/problemset/problem/175/E)|Codeforces||Codeforces Round #115|9|\n|<ul><li>- [ ] Done</li></ul>|1061|[Plane of Tanks: Duel](http://codeforces.com/problemset/problem/175/D)|Codeforces||Codeforces Round #115|9|\n|<ul><li>- [ ] Done</li></ul>|1062|[Shoe Store](http://codeforces.com/problemset/problem/166/D)|Codeforces||Codeforces Round #113 (Div. 2)|9|\n|<ul><li>- [ ] Done</li></ul>|1063|[Garden](http://codeforces.com/problemset/problem/152/E)|Codeforces||Codeforces Round #108 (Div. 2)|9|\n|<ul><li>- [ ] Done</li></ul>|1064|[Mission Impassable](http://codeforces.com/problemset/problem/150/D)|Codeforces||Codeforces Round #107 (Div. 1)|9|\n|<ul><li>- [ ] Done</li></ul>|1065|[World of Darkraft](http://codeforces.com/problemset/problem/138/D)|Codeforces||Codeforces Beta Round #99 (Div. 1)|9|\n|<ul><li>- [ ] Done</li></ul>|1066|[Unambiguous Arithmetic Expression](http://codeforces.com/problemset/problem/115/D)|Codeforces||Codeforces Beta Round #87 (Div. 1 Only)|9|\n|<ul><li>- [ ] Done</li></ul>|1067|[Crime Management](http://codeforces.com/problemset/problem/107/D)|Codeforces||Codeforces Beta Round #83 (Div. 1 Only)|9|\n|<ul><li>- [ ] Done</li></ul>|1068|[Arrangement](http://codeforces.com/problemset/problem/107/C)|Codeforces||Codeforces Beta Round #83 (Div. 1 Only) & Codeforces Beta Round #83 (Div. 2 Only)|9|\n|<ul><li>- [ ] Done</li></ul>|1069|[Candies and Stones](http://codeforces.com/problemset/problem/101/E)|Codeforces||Codeforces Beta Round #79 (Div. 1 Only)|9|\n|<ul><li>- [ ] Done</li></ul>|1070|[Horse Races](http://codeforces.com/problemset/problem/95/D)|Codeforces||Codeforces Beta Round #77 (Div. 1 Only) & Codeforces Beta Round #77 (Div. 2 Only)|9|\n|<ul><li>- [ ] Done</li></ul>|1071|[Lostborn](http://codeforces.com/problemset/problem/93/E)|Codeforces||Codeforces Beta Round #76 (Div. 1 Only)|9|\n|<ul><li>- [ ] Done</li></ul>|1072|[Flags](http://codeforces.com/problemset/problem/93/D)|Codeforces||Codeforces Beta Round #76 (Div. 1 Only)|9|\n|<ul><li>- [ ] Done</li></ul>|1073|[Two Subsequences](http://codeforces.com/problemset/problem/83/E)|Codeforces||Codeforces Beta Round #72 (Div. 1 Only)|9|\n|<ul><li>- [ ] Done</li></ul>|1074|[Pairs](http://codeforces.com/problemset/problem/81/E)|Codeforces||Yandex.Algorithm Open 2011 Qualification 1|9|\n|<ul><li>- [ ] Done</li></ul>|1075|[Domino Carpet](http://codeforces.com/problemset/problem/77/D)|Codeforces||Codeforces Beta Round #69 (Div. 1 Only)|9|\n|<ul><li>- [ ] Done</li></ul>|1076|[Hanger](http://codeforces.com/problemset/problem/74/D)|Codeforces||Codeforces Beta Round #68|9|\n|<ul><li>- [ ] Done</li></ul>|1077|[Nuclear Fusion](http://codeforces.com/problemset/problem/71/E)|Codeforces||Codeforces Beta Round #65 (Div. 2)|9|\n|<ul><li>- [ ] Done</li></ul>|1078|[Information Reform](http://codeforces.com/problemset/problem/70/E)|Codeforces||Codeforces Beta Round #64|9|\n|<ul><li>- [ ] Done</li></ul>|1079|[Half-decay tree](http://codeforces.com/problemset/problem/68/D)|Codeforces||Codeforces Beta Round #62|9|\n|<ul><li>- [ ] Done</li></ul>|1080|[Sequence of Balls](http://codeforces.com/problemset/problem/67/C)|Codeforces||Manthan 2011|9|\n|<ul><li>- [ ] Done</li></ul>|1081|[Journey](http://codeforces.com/problemset/problem/57/D)|Codeforces||Codeforces Beta Round #53|9|\n|<ul><li>- [ ] Done</li></ul>|1082|[Writing a Song](http://codeforces.com/problemset/problem/54/D)|Codeforces||Codeforces Beta Round #50|9|\n|<ul><li>- [ ] Done</li></ul>|1083|[Caterpillar](http://codeforces.com/problemset/problem/51/F)|Codeforces||Codeforces Beta Round #48|9|\n|<ul><li>- [ ] Done</li></ul>|1084|[Ivan the Fool VS Gorynych the Dragon](http://codeforces.com/problemset/problem/48/E)|Codeforces||School Personal Contest #3 (Winter Computer School 2010/11) - Codeforces Beta Round #45 (ACM-ICPC Rules)|9|\n|<ul><li>- [ ] Done</li></ul>|1085|[Moon Craters](http://codeforces.com/problemset/problem/39/C)|Codeforces||School Team Contest #1 (Winter Computer School 2010/11)|9|\n|<ul><li>- [ ] Done</li></ul>|1086|[Smart Boy](http://codeforces.com/problemset/problem/38/F)|Codeforces||School Personal Contest #1 (Winter Computer School 2010/11) - Codeforces Beta Round #38 (ACM-ICPC Rules)|9|\n|<ul><li>- [ ] Done</li></ul>|1087|[Lesson Timetable](http://codeforces.com/problemset/problem/37/D)|Codeforces||Codeforces Beta Round #37|9|\n|<ul><li>- [ ] Done</li></ul>|1088|[Triangles](http://codeforces.com/problemset/problem/15/E)|Codeforces||Codeforces Beta Round #15|9|\n|<ul><li>- [ ] Done</li></ul>|1089|[Faryuks](http://acm.timus.ru/problem.aspx?space=1&num=1739)|Timus|||9|\n|<ul><li>- [ ] Done</li></ul>|1090|[Steaks on Board](http://acm.timus.ru/problem.aspx?space=1&num=1895)|Timus|||9|\n|<ul><li>- [ ] Done</li></ul>|1091|[Candy Store](https://icpcarchive.ecs.baylor.edu/index.php?option=onlinejudge&page=show_problem&problem=4230)|Live Archive|2012|North America - Southeast USA|9|\n|<ul><li>- [ ] Done</li></ul>|1092|[StackingBoxes](http://community.topcoder.com/stat?c=problem_statement&pm=4660)|TopCoder||SRM 261 - Div1 hard] (7995)|9|\n|<ul><li>- [ ] Done</li></ul>|1093|[And Yet Another Bracket Sequence](http://codeforces.com/problemset/problem/524/F)|Codeforces||VK Cup 2015 - Round 1|9|\n|<ul><li>- [ ] Done</li></ul>|1094|[Four Divisors](http://codeforces.com/problemset/problem/665/F)|Codeforces||Educational Codeforces Round 12|9|\n|<ul><li>- [ ] Done</li></ul>|1095|[Transforming Sequence](http://codeforces.com/problemset/problem/623/E)|Codeforces||AIM Tech Round (Div. 1)|9|\n|<ul><li>- [ ] Done</li></ul>|1096|[A Museum Robbery](http://codeforces.com/problemset/problem/601/E)|Codeforces||Codeforces Round #333 (Div. 1)|9|\n|<ul><li>- [ ] Done</li></ul>|1097|[Sandy and Nuts](http://codeforces.com/problemset/problem/599/E)|Codeforces||Codeforces Round #332 (Div. 2)|9|\n|<ul><li>- [ ] Done</li></ul>|1098|[Wilbur and Strings](http://codeforces.com/problemset/problem/596/E)|Codeforces||Codeforces Round #331 (Div. 2)|9|\n|<ul><li>- [ ] Done</li></ul>|1099|[Strange Calculation and Cats](http://codeforces.com/problemset/problem/593/E)|Codeforces||Codeforces Round #329 (Div. 2)|9|\n|<ul><li>- [ ] Done</li></ul>|1100|[Polycarp's Masterpiece](http://codeforces.com/problemset/problem/589/C)|Codeforces||2015-2016 ACM-ICPC, NEERC, Southern Subregional Contest (Online Mirror, ACM-ICPC Rules, Teams Preferred)|9|\n|<ul><li>- [ ] Done</li></ul>|1101|[Bear and Cavalry](http://codeforces.com/problemset/problem/573/D)|Codeforces||Codeforces Round #318 [RussianCodeCup Thanks-Round] (Div. 1)|9|\n|<ul><li>- [ ] Done</li></ul>|1102|[Gerald and Path](http://codeforces.com/problemset/problem/559/E)|Codeforces||Codeforces Round #313 (Div. 1)|9|\n|<ul><li>- [ ] Done</li></ul>|1103|[Superhero's Job](http://codeforces.com/problemset/problem/542/D)|Codeforces||VK Cup 2015 - Round 3 (unofficial online mirror, Div. 1 only)|9|\n|<ul><li>- [ ] Done</li></ul>|1104|[Tavas in Kansas](http://codeforces.com/problemset/problem/536/D)|Codeforces||Codeforces Round #299 (Div. 1)|9|\n|<ul><li>- [ ] Done</li></ul>|1105|[Simplified Nonogram](http://codeforces.com/problemset/problem/534/F)|Codeforces||Codeforces Round #298 (Div. 2)|9|\n|<ul><li>- [ ] Done</li></ul>|1106|[Pasha and Pipe](http://codeforces.com/problemset/problem/518/F)|Codeforces||Codeforces Round #293 (Div. 2)|9|\n|<ul><li>- [ ] Done</li></ul>|1107|[Subarray Cuts](http://codeforces.com/problemset/problem/513/E2)|Codeforces||Rockethon 2015|9|\n|<ul><li>- [ ] Done</li></ul>|1108|[Subarray Cuts](http://codeforces.com/problemset/problem/513/E1)|Codeforces||Rockethon 2015|9|\n|<ul><li>- [ ] Done</li></ul>|1109|[Fox And Travelling](http://codeforces.com/problemset/problem/512/D)|Codeforces||Codeforces Round #290 (Div. 1)|9|\n|<ul><li>- [ ] Done</li></ul>|1110|[New Year Shopping](http://codeforces.com/problemset/problem/500/F)|Codeforces||Good Bye 2014|9|\n|<ul><li>- [ ] Done</li></ul>|1111|[Stairs and Lines](http://codeforces.com/problemset/problem/498/E)|Codeforces||Codeforces Round #284 (Div. 1)|9|\n|<ul><li>- [ ] Done</li></ul>|1112|[Random Function and Tree](http://codeforces.com/problemset/problem/482/D)|Codeforces||Codeforces Round #275 (Div. 1)|9|\n|<ul><li>- [ ] Done</li></ul>|1113|[Dreamoon and Binary](http://codeforces.com/problemset/problem/477/D)|Codeforces||Codeforces Round #272 (Div. 1)|9|\n|<ul><li>- [ ] Done</li></ul>|1114|[Little Pony and Elements of Harmony](http://codeforces.com/problemset/problem/453/D)|Codeforces||Codeforces Round #259 (Div. 1)|9|\n|<ul><li>- [ ] Done</li></ul>|1115|[Valera and Number](http://codeforces.com/problemset/problem/441/E)|Codeforces||Codeforces Round #252 (Div. 2)|9|\n|<ul><li>- [ ] Done</li></ul>|1116|[Berland Federalization](http://codeforces.com/problemset/problem/440/D)|Codeforces||Testing Round #10|9|\n|<ul><li>- [ ] Done</li></ul>|1117|[Pudding Monsters](http://codeforces.com/problemset/problem/436/D)|Codeforces||Zepto Code Rush 2014|9|\n|<ul><li>- [ ] Done</li></ul>|1118|[Tachibana Kanade's Tofu](http://codeforces.com/problemset/problem/433/E)|Codeforces||Codeforces Round #248 (Div. 2) & Codeforces Round #248 (Div. 1)|9|\n|<ul><li>- [ ] Done</li></ul>|1119|[Largest Submatrix 3](http://codeforces.com/problemset/problem/407/D)|Codeforces||Codeforces Round #239 (Div. 1)|9|\n|<ul><li>- [ ] Done</li></ul>|1120|[Game with Points](http://codeforces.com/problemset/problem/386/D)|Codeforces||Testing Round #9|9|\n|<ul><li>- [ ] Done</li></ul>|1121|[Ksenia and Combinatorics](http://codeforces.com/problemset/problem/382/E)|Codeforces||Codeforces Round #224 (Div. 2)|9|\n|<ul><li>- [ ] Done</li></ul>|1122|[Red and Black Tree](http://codeforces.com/problemset/problem/375/E)|Codeforces||Codeforces Round #221 (Div. 1)|9|\n|<ul><li>- [ ] Done</li></ul>|1123|[Xenia and String Problem](http://codeforces.com/problemset/problem/356/E)|Codeforces||Codeforces Round #207 (Div. 1)|9|\n|<ul><li>- [ ] Done</li></ul>|1124|[Transferring Pyramid](http://codeforces.com/problemset/problem/354/D)|Codeforces||Codeforces Round #206 (Div. 1)|9|\n|<ul><li>- [ ] Done</li></ul>|1125|[Game with Strings](http://codeforces.com/problemset/problem/354/B)|Codeforces||Codeforces Round #206 (Div. 1) & Codeforces Round #206 (Div. 2)|9|\n|<ul><li>- [ ] Done</li></ul>|1126|[Pilgrims](http://codeforces.com/problemset/problem/348/E)|Codeforces||Codeforces Round #202 (Div. 1)|9|\n|<ul><li>- [ ] Done</li></ul>|1127|[Rectangles and Square](http://codeforces.com/problemset/problem/335/D)|Codeforces||MemSQL start[c]up Round 2 - online version|9|\n|<ul><li>- [ ] Done</li></ul>|1128|[Binary Key](http://codeforces.com/problemset/problem/332/E)|Codeforces||Codeforces Round #193 (Div. 2)|9|\n|<ul><li>- [ ] Done</li></ul>|1129|[The Great Julya Calendar](http://codeforces.com/problemset/problem/331/C3)|Codeforces||ABBYY Cup 3.0 - Finals (online version)|9|\n|<ul><li>- [ ] Done</li></ul>|1130|[The Great Julya Calendar](http://codeforces.com/problemset/problem/331/C2)|Codeforces||ABBYY Cup 3.0 - Finals (online version)|9|\n|<ul><li>- [ ] Done</li></ul>|1131|[Ciel and Flipboard](http://codeforces.com/problemset/problem/321/D)|Codeforces||Codeforces Round #190 (Div. 1)|9|\n|<ul><li>- [ ] Done</li></ul>|1132|[PE Lesson](http://codeforces.com/problemset/problem/316/D3)|Codeforces||ABBYY Cup 3.0|9|\n|<ul><li>- [ ] Done</li></ul>|1133|[PE Lesson](http://codeforces.com/problemset/problem/316/D2)|Codeforces||ABBYY Cup 3.0|9|\n|<ul><li>- [ ] Done</li></ul>|1134|[PE Lesson](http://codeforces.com/problemset/problem/316/D1)|Codeforces||ABBYY Cup 3.0|9|\n|<ul><li>- [ ] Done</li></ul>|1135|[Sereja and Squares](http://codeforces.com/problemset/problem/314/E)|Codeforces||Codeforces Round #187 (Div. 1)|9|\n|<ul><li>- [ ] Done</li></ul>|1136|[Yaroslav and Arrangements](http://codeforces.com/problemset/problem/301/E)|Codeforces||Codeforces Round #182 (Div. 1)|9|\n|<ul><li>- [ ] Done</li></ul>|1137|[Polo the Penguin and Lucky Numbers](http://codeforces.com/problemset/problem/288/E)|Codeforces||Codeforces Round #177 (Div. 1)|9|\n|<ul><li>- [ ] Done</li></ul>|1138|[Google Code Jam](http://codeforces.com/problemset/problem/277/D)|Codeforces||Codeforces Round #170 (Div. 1)|9|\n|<ul><li>- [ ] Done</li></ul>|1139|[Dima and Game](http://codeforces.com/problemset/problem/273/E)|Codeforces||Codeforces Round #167 (Div. 1)|9|\n|<ul><li>- [ ] Done</li></ul>|1140|[Dima and Figure](http://codeforces.com/problemset/problem/273/D)|Codeforces||Codeforces Round #167 (Div. 1)|9|\n|<ul><li>- [ ] Done</li></ul>|1141|[Maximum Waterfall](http://codeforces.com/problemset/problem/269/D)|Codeforces||Codeforces Round #165 (Div. 1)|9|\n|<ul><li>- [ ] Done</li></ul>|1142|[Wall Bars](http://codeforces.com/problemset/problem/268/D)|Codeforces||Codeforces Round #164 (Div. 2)|9|\n|<ul><li>- [ ] Done</li></ul>|1143|[Roadside Trees](http://codeforces.com/problemset/problem/264/E)|Codeforces||Codeforces Round #162 (Div. 1)|9|\n|<ul><li>- [ ] Done</li></ul>|1144|[Colorful Stones](http://codeforces.com/problemset/problem/264/D)|Codeforces||Codeforces Round #162 (Div. 1)|9|\n|<ul><li>- [ ] Done</li></ul>|1145|[Rhombus](http://codeforces.com/problemset/problem/263/E)|Codeforces||Codeforces Round #161 (Div. 2)|9|\n|<ul><li>- [ ] Done</li></ul>|1146|[Maxim and Calculator](http://codeforces.com/problemset/problem/261/E)|Codeforces||Codeforces Round #160 (Div. 1)|9|\n|<ul><li>- [ ] Done</li></ul>|1147|[Representative Sampling](http://codeforces.com/problemset/problem/178/F2)|Codeforces||ABBYY Cup 2.0 - Hard|9|\n|<ul><li>- [ ] Done</li></ul>|1148|[Maze](http://codeforces.com/problemset/problem/123/E)|Codeforces||Codeforces Beta Round #92 (Div. 1 Only)|9|\n|<ul><li>- [ ] Done</li></ul>|1149|[Maximum Longest Increasing Subsequence](http://www.codechef.com/problems/LISA)|CodeChef|||9|\n|<ul><li>- [ ] Done</li></ul>|1150|[Research Rover](http://codeforces.com/problemset/problem/722/E)|Codeforces||Intel Code Challenge Elimination Round (Div. 1 + Div. 2, combined)|9|\n|<ul><li>- [ ] Done</li></ul>|1151|[Singer House](http://codeforces.com/problemset/problem/830/D)|Codeforces||Codeforces Round #424 (Div. 1, rated, based on VK Cup Finals)|9|\n|<ul><li>- [ ] Done</li></ul>|1152|[Hitchhiking in the Baltic States](http://codeforces.com/problemset/problem/809/D)|Codeforces||Codeforces Round #415 (Div. 1)|9|\n|<ul><li>- [ ] Done</li></ul>|1153|[Black Widow](http://codeforces.com/problemset/problem/704/C)|Codeforces||Codeforces Round #366 (Div. 1) & Codeforces Round #366 (Div. 2)|9|\n|<ul><li>- [ ] Done</li></ul>|1154|[Road to Home](http://codeforces.com/problemset/problem/721/E)|Codeforces||Codeforces Round #374 (Div. 2)|9|\n|<ul><li>- [ ] Done</li></ul>|1155|[DFS](http://codeforces.com/problemset/problem/1044/F)|Codeforces||Lyft Level 5 Challenge 2018 - Final Round|9|\n|<ul><li>- [ ] Done</li></ul>|1156|[Fibonacci String Subsequences](http://codeforces.com/problemset/problem/946/F)|Codeforces||Educational Codeforces Round 39 (Rated for Div. 2)|9|\n|<ul><li>- [ ] Done</li></ul>|1157|[Tree and Table](http://codeforces.com/problemset/problem/251/E)|Codeforces||Codeforces Round #153 (Div. 1)|10|\n|<ul><li>- [ ] Done</li></ul>|1158|[Cubes](http://codeforces.com/problemset/problem/243/D)|Codeforces||Codeforces Round #150 (Div. 1)|10|\n|<ul><li>- [ ] Done</li></ul>|1159|[Doe Graphs](http://codeforces.com/problemset/problem/232/C)|Codeforces||Codeforces Round #144 (Div. 1) & Codeforces Round #144 (Div. 2)|10|\n|<ul><li>- [ ] Done</li></ul>|1160|[Clever Fat Rat](http://codeforces.com/problemset/problem/185/C)|Codeforces||Codeforces Round #118 (Div. 1) & Codeforces Round #118 (Div. 2)|10|\n|<ul><li>- [ ] Done</li></ul>|1161|[Mrs. Hudson's Pancakes](http://codeforces.com/problemset/problem/156/E)|Codeforces||Codeforces Round #110 (Div. 1)|10|\n|<ul><li>- [ ] Done</li></ul>|1162|[Hellish Constraints](http://codeforces.com/problemset/problem/138/E)|Codeforces||Codeforces Beta Round #99 (Div. 1)|10|\n|<ul><li>- [ ] Done</li></ul>|1163|[Help Shrek and Donkey](http://codeforces.com/problemset/problem/98/E)|Codeforces||Codeforces Beta Round #78 (Div. 1 Only)|10|\n|<ul><li>- [ ] Done</li></ul>|1164|[Mutation](http://codeforces.com/problemset/problem/76/C)|Codeforces||All-Ukrainian School Olympiad in Informatics|10|\n|<ul><li>- [ ] Done</li></ul>|1165|[World Evil](http://codeforces.com/problemset/problem/62/E)|Codeforces||Codeforces Beta Round #58|10|\n|<ul><li>- [ ] Done</li></ul>|1166|[Expression](http://codeforces.com/problemset/problem/58/E)|Codeforces||Codeforces Beta Round #54 (Div. 2)|10|\n|<ul><li>- [ ] Done</li></ul>|1167|[The Great Marathon](http://codeforces.com/problemset/problem/38/H)|Codeforces||School Personal Contest #1 (Winter Computer School 2010/11) - Codeforces Beta Round #38 (ACM-ICPC Rules)|10|\n|<ul><li>- [ ] Done</li></ul>|1168|[Dynamic Assignment Problem](http://www.spoj.com/problems/DAP/)|SPOJ|||10|\n|<ul><li>- [ ] Done</li></ul>|1169|[Dynamic Programming](p?ID=410)|A2 Online Judge|||10|\n|<ul><li>- [ ] Done</li></ul>|1170|[Geometry](https://icpcarchive.ecs.baylor.edu/index.php?option=onlinejudge&page=show_problem&problem=1327)|Live Archive|2005|Asia - Kolkata|10|\n|<ul><li>- [ ] Done</li></ul>|1171|[To Hack or not to Hack](http://codeforces.com/problemset/problem/662/E)|Codeforces||CROC 2016 - Final Round [Private, For Onsite Finalists Only]|10|\n|<ul><li>- [ ] Done</li></ul>|1172|[Combining Slimes](http://codeforces.com/problemset/problem/618/G)|Codeforces||Wunder Fund Round 2016 (Div. 1 + Div. 2 combined)|10|\n|<ul><li>- [ ] Done</li></ul>|1173|[Puzzle Lover](http://codeforces.com/problemset/problem/613/E)|Codeforces||Codeforces Round #339 (Div. 1)|10|\n|<ul><li>- [ ] Done</li></ul>|1174|[Simba on the Circle](http://codeforces.com/problemset/problem/612/F)|Codeforces||Educational Codeforces Round 4|10|\n|<ul><li>- [ ] Done</li></ul>|1175|[Digits of Number Pi](http://codeforces.com/problemset/problem/585/F)|Codeforces||Codeforces Round #325 (Div. 1)|10|\n|<ul><li>- [ ] Done</li></ul>|1176|[Boolean Function](http://codeforces.com/problemset/problem/582/E)|Codeforces||Codeforces Round #323 (Div. 1)|10|\n|<ul><li>- [ ] Done</li></ul>|1177|[Number of Binominal Coefficients](http://codeforces.com/problemset/problem/582/D)|Codeforces||Codeforces Round #323 (Div. 1)|10|\n|<ul><li>- [ ] Done</li></ul>|1178|[Kojiro and Furrari](http://codeforces.com/problemset/problem/581/E)|Codeforces||Codeforces Round #322 (Div. 2)|10|\n|<ul><li>- [ ] Done</li></ul>|1179|[Longest Increasing Subsequence](http://codeforces.com/problemset/problem/568/E)|Codeforces||Codeforces Round #315 (Div. 1)|10|\n|<ul><li>- [ ] Done</li></ul>|1180|[Kyoya and Train](http://codeforces.com/problemset/problem/553/E)|Codeforces||Codeforces Round #309 (Div. 1)|10|\n|<ul><li>- [ ] Done</li></ul>|1181|[Inversions problem](http://codeforces.com/problemset/problem/513/G3)|Codeforces||Rockethon 2015|10|\n|<ul><li>- [ ] Done</li></ul>|1182|[Subsequences Return](http://codeforces.com/problemset/problem/497/E)|Codeforces||Codeforces Round #283 (Div. 1)|10|\n|<ul><li>- [ ] Done</li></ul>|1183|[Permanent](http://codeforces.com/problemset/problem/468/E)|Codeforces||Codeforces Round #268 (Div. 1)|10|\n|<ul><li>- [ ] Done</li></ul>|1184|[An easy problem about trees](http://codeforces.com/problemset/problem/457/F)|Codeforces||MemSQL Start[c]UP 2.0 - Round 2|10|\n|<ul><li>- [ ] Done</li></ul>|1185|[Jzzhu and Squares](http://codeforces.com/problemset/problem/449/E)|Codeforces||Codeforces Round #257 (Div. 1)|10|\n|<ul><li>- [ ] Done</li></ul>|1186|[Banners](http://codeforces.com/problemset/problem/436/F)|Codeforces||Zepto Code Rush 2014|10|\n|<ul><li>- [ ] Done</li></ul>|1187|[Colored Jenga](http://codeforces.com/problemset/problem/424/E)|Codeforces||Codeforces Round #242 (Div. 2)|10|\n|<ul><li>- [ ] Done</li></ul>|1188|[Stock Trading](http://codeforces.com/problemset/problem/391/F1)|Codeforces||Rockethon 2014|10|\n|<ul><li>- [ ] Done</li></ul>|1189|[New Year Cactus](http://codeforces.com/problemset/problem/379/G)|Codeforces||Good Bye 2013|10|\n|<ul><li>- [ ] Done</li></ul>|1190|[Cookie Clicker](http://codeforces.com/problemset/problem/377/E)|Codeforces||Codeforces Round #222 (Div. 1)|10|\n|<ul><li>- [ ] Done</li></ul>|1191|[Summer Reading](http://codeforces.com/problemset/problem/370/E)|Codeforces||Codeforces Round #217 (Div. 2)|10|\n|<ul><li>- [ ] Done</li></ul>|1192|[Vasily the Bear and Painting Square](http://codeforces.com/problemset/problem/336/E)|Codeforces||Codeforces Round #195 (Div. 2)|10|\n|<ul><li>- [ ] Done</li></ul>|1193|[Buy One, Get One Free](http://codeforces.com/problemset/problem/335/F)|Codeforces||MemSQL start[c]up Round 2 - online version|10|\n|<ul><li>- [ ] Done</li></ul>|1194|[Counting Skyscrapers](http://codeforces.com/problemset/problem/335/E)|Codeforces||MemSQL start[c]up Round 2 - online version|10|\n|<ul><li>- [ ] Done</li></ul>|1195|[Deja Vu](http://codeforces.com/problemset/problem/331/E2)|Codeforces||ABBYY Cup 3.0 - Finals (online version)|10|\n|<ul><li>- [ ] Done</li></ul>|1196|[Random Ranking](http://codeforces.com/problemset/problem/303/E)|Codeforces||Codeforces Round #183 (Div. 1)|10|\n|<ul><li>- [ ] Done</li></ul>|1197|[Sequence Transformation](http://codeforces.com/problemset/problem/280/E)|Codeforces||Codeforces Round #172 (Div. 1)|10|\n|<ul><li>- [ ] Done</li></ul>|1198|[Galaxy Union](http://codeforces.com/problemset/problem/48/G)|Codeforces||School Personal Contest #3 (Winter Computer School 2010/11) - Codeforces Beta Round #45 (ACM-ICPC Rules)|10|\n|<ul><li>- [ ] Done</li></ul>|1199|[School](http://codeforces.com/problemset/problem/45/B)|Codeforces||School Team Contest #3 (Winter Computer School 2010/11)|10|\n|<ul><li>- [ ] Done</li></ul>|1200|[Forward, march!](http://codeforces.com/problemset/problem/11/E)|Codeforces||Codeforces Beta Round #11|10|\n|<ul><li>- [ ] Done</li></ul>|1201|[#dynamic-programming&nbsp;(168)</span>](http://www.spoj.com/problems/tag/)|SPOJ|||10|\n|<ul><li>- [ ] Done</li></ul>|1202|[Longest Subsequence](https://icpcarchive.ecs.baylor.edu/index.php?option=onlinejudge&page=show_problem&problem=1107)|Live Archive|2004|Asia - Manila|10|\n|<ul><li>- [ ] Done</li></ul>|1203|[Selling Numbers](http://codeforces.com/problemset/problem/778/E)|Codeforces||Codeforces Round #402 (Div. 1)|10|\n|<ul><li>- [ ] Done</li></ul>|1204|[Shake It!](http://codeforces.com/problemset/problem/848/D)|Codeforces||Codeforces Round #431 (Div. 1)|10|\n|<ul><li>- [ ] Done</li></ul>|1205|[Sloth](http://codeforces.com/problemset/problem/891/D)|Codeforces||Codeforces Round #446 (Div. 1)|10|\n|<ul><li>- [ ] Done</li></ul>|1206|[Mod Mod Mod](http://codeforces.com/problemset/problem/889/E)|Codeforces||Codeforces Round #445 (Div. 1, based on Technocup 2018 Elimination Round 3)|10|\n|<ul><li>- [ ] Done</li></ul>|1207|[Numbers on the blackboard](http://codeforces.com/problemset/problem/878/E)|Codeforces||Codeforces Round #443 (Div. 1)|10|\n|<ul><li>- [ ] Done</li></ul>|1208|[Caramel Clouds](http://codeforces.com/problemset/problem/833/E)|Codeforces||Codeforces Round #426 (Div. 1)|10|\n|<ul><li>- [ ] Done</li></ul>|1209|[Days of Floral Colours](http://codeforces.com/problemset/problem/848/E)|Codeforces||Codeforces Round #431 (Div. 1)|10|\n|<ul><li>- [ ] Done</li></ul>|1210|[Ada and Zoo](http://www.spoj.com/problems/ADAZOO/)|SPOJ|||10|\n|<ul><li>- [ ] Done</li></ul>|1211|[Dynamic Shortest Path](http://codeforces.com/problemset/problem/843/D)|Codeforces||AIM Tech Round 4 (Div. 1)|10|\n"
  },
  {
    "path": "categories/002. implementation/README.md",
    "content": "# 002. implementation\n\n\n| Checkbox | ID | Problem Name|Online Judge|Year|Contest|Difficulty Level|\n|:---:|:---:|:---:|:---:|:---:|:---:|:---:|\n|<ul><li>- [ ] Done</li></ul>|1|[Greg's Workout](http://codeforces.com/problemset/problem/255/A)|Codeforces||Codeforces Round #156 (Div. 2)|1|\n|<ul><li>- [ ] Done</li></ul>|2|[Free Cash](http://codeforces.com/problemset/problem/237/A)|Codeforces||Codeforces Round #147 (Div. 2)|1|\n|<ul><li>- [ ] Done</li></ul>|3|[Boy or Girl](http://codeforces.com/problemset/problem/236/A)|Codeforces||Codeforces Round #146 (Div. 2)|1|\n|<ul><li>- [ ] Done</li></ul>|4|[Perfect Permutation](http://codeforces.com/problemset/problem/233/A)|Codeforces||Codeforces Round #144 (Div. 2)|1|\n|<ul><li>- [ ] Done</li></ul>|5|[Team](http://codeforces.com/problemset/problem/231/A)|Codeforces||Codeforces Round #143 (Div. 2)|1|\n|<ul><li>- [ ] Done</li></ul>|6|[T-primes](http://codeforces.com/problemset/problem/230/B)|Codeforces||Codeforces Round #142 (Div. 2)|1|\n|<ul><li>- [ ] Done</li></ul>|7|[Is your horseshoe on the other hoof?](http://codeforces.com/problemset/problem/228/A)|Codeforces||Codeforces Round #141 (Div. 2)|1|\n|<ul><li>- [ ] Done</li></ul>|8|[k-String](http://codeforces.com/problemset/problem/219/A)|Codeforces||Codeforces Round #135 (Div. 2)|1|\n|<ul><li>- [ ] Done</li></ul>|9|[Dubstep](http://codeforces.com/problemset/problem/208/A)|Codeforces||Codeforces Round #130 (Div. 2)|1|\n|<ul><li>- [ ] Done</li></ul>|10|[Drinks](http://codeforces.com/problemset/problem/200/B)|Codeforces||Codeforces Round #126 (Div. 2)|1|\n|<ul><li>- [ ] Done</li></ul>|11|[Hexadecimal's theorem](http://codeforces.com/problemset/problem/199/A)|Codeforces||Codeforces Round #125 (Div. 2)|1|\n|<ul><li>- [ ] Done</li></ul>|12|[Supercentral Point](http://codeforces.com/problemset/problem/165/A)|Codeforces||Codeforces Round #112 (Div. 2)|1|\n|<ul><li>- [ ] Done</li></ul>|13|[Next Round](http://codeforces.com/problemset/problem/158/A)|Codeforces||VK Cup 2012 Qualification Round 1|1|\n|<ul><li>- [ ] Done</li></ul>|14|[Marks](http://codeforces.com/problemset/problem/152/A)|Codeforces||Codeforces Round #108 (Div. 2)|1|\n|<ul><li>- [ ] Done</li></ul>|15|[Soft Drinking](http://codeforces.com/problemset/problem/151/A)|Codeforces||Codeforces Round #107 (Div. 2)|1|\n|<ul><li>- [ ] Done</li></ul>|16|[Business trip](http://codeforces.com/problemset/problem/149/A)|Codeforces||Codeforces Round #106 (Div. 2)|1|\n|<ul><li>- [ ] Done</li></ul>|17|[Insomnia cure](http://codeforces.com/problemset/problem/148/A)|Codeforces||Codeforces Round #105 (Div. 2)|1|\n|<ul><li>- [ ] Done</li></ul>|18|[Lucky Ticket](http://codeforces.com/problemset/problem/146/A)|Codeforces||Codeforces Round #104 (Div. 2)|1|\n|<ul><li>- [ ] Done</li></ul>|19|[Arrival of the General](http://codeforces.com/problemset/problem/144/A)|Codeforces||Codeforces Round #103 (Div. 2)|1|\n|<ul><li>- [ ] Done</li></ul>|20|[Amusing Joke](http://codeforces.com/problemset/problem/141/A)|Codeforces||Codeforces Round #101 (Div. 2)|1|\n|<ul><li>- [ ] Done</li></ul>|21|[Petr and Book](http://codeforces.com/problemset/problem/139/A)|Codeforces||Codeforces Beta Round #99 (Div. 2)|1|\n|<ul><li>- [ ] Done</li></ul>|22|[Presents](http://codeforces.com/problemset/problem/136/A)|Codeforces||Codeforces Beta Round #97 (Div. 2)|1|\n|<ul><li>- [ ] Done</li></ul>|23|[HQ9+](http://codeforces.com/problemset/problem/133/A)|Codeforces||Codeforces Beta Round #96 (Div. 2)|1|\n|<ul><li>- [ ] Done</li></ul>|24|[cAPS lOCK](http://codeforces.com/problemset/problem/131/A)|Codeforces||Codeforces Beta Round #95 (Div. 2)|1|\n|<ul><li>- [ ] Done</li></ul>|25|[Cookies](http://codeforces.com/problemset/problem/129/A)|Codeforces||Codeforces Beta Round #94 (Div. 2 Only)|1|\n|<ul><li>- [ ] Done</li></ul>|26|[Epic Game](http://codeforces.com/problemset/problem/119/A)|Codeforces||Codeforces Beta Round #90|1|\n|<ul><li>- [ ] Done</li></ul>|27|[Present from Lena](http://codeforces.com/problemset/problem/118/B)|Codeforces||Codeforces Beta Round #89 (Div. 2)|1|\n|<ul><li>- [ ] Done</li></ul>|28|[String Task](http://codeforces.com/problemset/problem/118/A)|Codeforces||Codeforces Beta Round #89 (Div. 2)|1|\n|<ul><li>- [ ] Done</li></ul>|29|[Tram](http://codeforces.com/problemset/problem/116/A)|Codeforces||Codeforces Beta Round #87 (Div. 2 Only)|1|\n|<ul><li>- [ ] Done</li></ul>|30|[Petya and Strings](http://codeforces.com/problemset/problem/112/A)|Codeforces||Codeforces Beta Round #85 (Div. 2 Only)|1|\n|<ul><li>- [ ] Done</li></ul>|31|[Nearly Lucky Number](http://codeforces.com/problemset/problem/110/A)|Codeforces||Codeforces Beta Round #84 (Div. 2 Only)|1|\n|<ul><li>- [ ] Done</li></ul>|32|[Football](http://codeforces.com/problemset/problem/96/A)|Codeforces||Codeforces Beta Round #77 (Div. 2 Only)|1|\n|<ul><li>- [ ] Done</li></ul>|33|[Chips](http://codeforces.com/problemset/problem/92/A)|Codeforces||Codeforces Beta Round #75 (Div. 2 Only)|1|\n|<ul><li>- [ ] Done</li></ul>|34|[Double Cola](http://codeforces.com/problemset/problem/82/A)|Codeforces||Yandex.Algorithm 2011 Qualification 2|1|\n|<ul><li>- [ ] Done</li></ul>|35|[Life Without Zeros](http://codeforces.com/problemset/problem/75/A)|Codeforces||Codeforces Beta Round #67 (Div. 2)|1|\n|<ul><li>- [ ] Done</li></ul>|36|[Young Physicist](http://codeforces.com/problemset/problem/69/A)|Codeforces||Codeforces Beta Round #63 (Div. 2)|1|\n|<ul><li>- [ ] Done</li></ul>|37|[Ultra-Fast Mathematician](http://codeforces.com/problemset/problem/61/A)|Codeforces||Codeforces Beta Round #57 (Div. 2)|1|\n|<ul><li>- [ ] Done</li></ul>|38|[Word](http://codeforces.com/problemset/problem/59/A)|Codeforces||Codeforces Beta Round #55 (Div. 2)|1|\n|<ul><li>- [ ] Done</li></ul>|39|[Translation](http://codeforces.com/problemset/problem/41/A)|Codeforces||Codeforces Beta Round #40 (Div. 2)|1|\n|<ul><li>- [ ] Done</li></ul>|40|[Army](http://codeforces.com/problemset/problem/38/A)|Codeforces||School Personal Contest #1 (Winter Computer School 2010/11) - Codeforces Beta Round #38 (ACM-ICPC Rules)|1|\n|<ul><li>- [ ] Done</li></ul>|41|[Reconnaissance 2](http://codeforces.com/problemset/problem/34/A)|Codeforces||Codeforces Beta Round #34 (Div. 2)|1|\n|<ul><li>- [ ] Done</li></ul>|42|[Borze](http://codeforces.com/problemset/problem/32/B)|Codeforces||Codeforces Beta Round #32 (Div. 2, Codeforces format)|1|\n|<ul><li>- [ ] Done</li></ul>|43|[Registration System](http://codeforces.com/problemset/problem/4/C)|Codeforces||Codeforces Beta Round #4 (Div. 2 Only)|1|\n|<ul><li>- [ ] Done</li></ul>|44|[Winner](http://codeforces.com/problemset/problem/2/A)|Codeforces||Codeforces Beta Round #2|1|\n|<ul><li>- [ ] Done</li></ul>|45|[Spreadsheet](http://codeforces.com/problemset/problem/1/B)|Codeforces||Codeforces Beta Round #1|1|\n|<ul><li>- [ ] Done</li></ul>|46|[Bytelandian gold coins](http://www.spoj.com/problems/COINS/)|SPOJ|||1|\n|<ul><li>- [ ] Done</li></ul>|47|[Ws Cipher](http://www.spoj.com/problems/WSCIPHER/)|SPOJ|||1|\n|<ul><li>- [ ] Done</li></ul>|48|[Arm Wrestling Tournament](https://icpcarchive.ecs.baylor.edu/index.php?option=onlinejudge&page=show_problem&problem=3061)|Live Archive|2010|Asia - Jakarta|1|\n|<ul><li>- [ ] Done</li></ul>|49|[Magic Numbers](http://codeforces.com/problemset/problem/320/A)|Codeforces||Codeforces Round #189 (Div. 2)|1|\n|<ul><li>- [ ] Done</li></ul>|50|[Hello, world!](http://acm.tju.edu.cn/toj/showp1001.html)|TJU|||1|\n|<ul><li>- [ ] Done</li></ul>|51|[Fibonacci Numbers](http://acm.tju.edu.cn/toj/showp1208.html)|TJU|||1|\n|<ul><li>- [ ] Done</li></ul>|52|[Meteoros](http://br.spoj.com/problems/METEORO/)|SPOJ Brazil|||1|\n|<ul><li>- [ ] Done</li></ul>|53|[MODIFY SEQUENCE](http://www.spoj.com/problems/NITK06/)|SPOJ|||1|\n|<ul><li>- [ ] Done</li></ul>|54|[Adding Reversed Numbers](http://acm.tju.edu.cn/toj/showp2210.html)|TJU|||1|\n|<ul><li>- [ ] Done</li></ul>|55|[Area of a Circle](https://www.urionlinejudge.com.br/judge/en/problems/view/1002)|URI|||1|\n|<ul><li>- [ ] Done</li></ul>|56|[Clock Hands](https://uva.onlinejudge.org/index.php?option=onlinejudge&page=show_problem&problem=520)|UVA|||1|\n|<ul><li>- [ ] Done</li></ul>|57|[Cheap Travel](http://codeforces.com/problemset/problem/466/A)|Codeforces||Codeforces Round #266 (Div. 2)|1|\n|<ul><li>- [ ] Done</li></ul>|58|[Balloons Colors](p?ID=6)|A2 Online Judge|||1|\n|<ul><li>- [ ] Done</li></ul>|59|[Appleman and Easy Task](http://codeforces.com/problemset/problem/462/A)|Codeforces||Codeforces Round #263 (Div. 2)|1|\n|<ul><li>- [ ] Done</li></ul>|60|[FoxAndGame](http://community.topcoder.com/stat?c=problem_statement&pm=12438)|TopCoder||SRM 571 - Div2 easy] (15491)|1|\n|<ul><li>- [ ] Done</li></ul>|61|[Treats for the Cows](http://www.spoj.com/problems/TRT/)|SPOJ|||1|\n|<ul><li>- [ ] Done</li></ul>|62|[Wachovia Bank](http://www.spoj.com/problems/WACHOVIA/)|SPOJ|||1|\n|<ul><li>- [ ] Done</li></ul>|63|[Fibonacci Freeze](https://uva.onlinejudge.org/index.php?option=onlinejudge&page=show_problem&problem=436)|UVA|||1|\n|<ul><li>- [ ] Done</li></ul>|64|[What's Next?](https://icpcarchive.ecs.baylor.edu/index.php?option=onlinejudge&page=show_problem&problem=2965)|Live Archive|2010|Africa/Middle East - Arab Contest|1|\n|<ul><li>- [ ] Done</li></ul>|65|[Tanya and Toys](http://codeforces.com/problemset/problem/659/C)|Codeforces||Codeforces Round #346 (Div. 2)|1|\n|<ul><li>- [ ] Done</li></ul>|66|[Round House](http://codeforces.com/problemset/problem/659/A)|Codeforces||Codeforces Round #346 (Div. 2)|1|\n|<ul><li>- [ ] Done</li></ul>|67|[Far Relative’s Birthday Cake](http://codeforces.com/problemset/problem/629/A)|Codeforces||Codeforces Round #343 (Div. 2)|1|\n|<ul><li>- [ ] Done</li></ul>|68|[Wet Shark and Odd and Even](http://codeforces.com/problemset/problem/621/A)|Codeforces||Codeforces Round #341 (Div. 2)|1|\n|<ul><li>- [ ] Done</li></ul>|69|[Professor GukiZ's Robot](http://codeforces.com/problemset/problem/620/A)|Codeforces||Educational Codeforces Round 6|1|\n|<ul><li>- [ ] Done</li></ul>|70|[Bulbs](http://codeforces.com/problemset/problem/615/A)|Codeforces||Codeforces Round #338 (Div. 2)|1|\n|<ul><li>- [ ] Done</li></ul>|71|[New Year and Days](http://codeforces.com/problemset/problem/611/A)|Codeforces||Good Bye 2015|1|\n|<ul><li>- [ ] Done</li></ul>|72|[USB Flash Drives](http://codeforces.com/problemset/problem/609/A)|Codeforces||Educational Codeforces Round 3|1|\n|<ul><li>- [ ] Done</li></ul>|73|[Uncowed Forces](http://codeforces.com/problemset/problem/604/A)|Codeforces||Codeforces Round #334 (Div. 2)|1|\n|<ul><li>- [ ] Done</li></ul>|74|[Two Bases](http://codeforces.com/problemset/problem/602/A)|Codeforces||Codeforces Round #333 (Div. 2)|1|\n|<ul><li>- [ ] Done</li></ul>|75|[Patrick and Shopping](http://codeforces.com/problemset/problem/599/A)|Codeforces||Codeforces Round #332 (Div. 2)|1|\n|<ul><li>- [ ] Done</li></ul>|76|[Vitaly and Night](http://codeforces.com/problemset/problem/595/A)|Codeforces||Codeforces Round #330 (Div. 2)|1|\n|<ul><li>- [ ] Done</li></ul>|77|[Alena's Schedule](http://codeforces.com/problemset/problem/586/A)|Codeforces||Codeforces Round #325 (Div. 2)|1|\n|<ul><li>- [ ] Done</li></ul>|78|[Robot's Task](http://codeforces.com/problemset/problem/583/B)|Codeforces||Codeforces Round #323 (Div. 2)|1|\n|<ul><li>- [ ] Done</li></ul>|79|[Asphalting Roads](http://codeforces.com/problemset/problem/583/A)|Codeforces||Codeforces Round #323 (Div. 2)|1|\n|<ul><li>- [ ] Done</li></ul>|80|[Luxurious Houses](http://codeforces.com/problemset/problem/581/B)|Codeforces||Codeforces Round #322 (Div. 2)|1|\n|<ul><li>- [ ] Done</li></ul>|81|[Vasya the Hipster](http://codeforces.com/problemset/problem/581/A)|Codeforces||Codeforces Round #322 (Div. 2)|1|\n|<ul><li>- [ ] Done</li></ul>|82|[Kefa and First Steps](http://codeforces.com/problemset/problem/580/A)|Codeforces||Codeforces Round #321 (Div. 2)|1|\n|<ul><li>- [ ] Done</li></ul>|83|[Multiplication Table](http://codeforces.com/problemset/problem/577/A)|Codeforces||Codeforces Round #319 (Div. 2)|1|\n|<ul><li>- [ ] Done</li></ul>|84|[Bear and Elections](http://codeforces.com/problemset/problem/574/A)|Codeforces||Codeforces Round #318 [RussianCodeCup Thanks-Round] (Div. 2)|1|\n|<ul><li>- [ ] Done</li></ul>|85|[Bear and Poker](http://codeforces.com/problemset/problem/573/A)|Codeforces||Codeforces Round #318 [RussianCodeCup Thanks-Round] (Div. 1) & Codeforces Round #318 [RussianCodeCup Thanks-Round] (Div. 2)|1|\n|<ul><li>- [ ] Done</li></ul>|86|[Simple Game](http://codeforces.com/problemset/problem/570/B)|Codeforces||Codeforces Round #316 (Div. 2)|1|\n|<ul><li>- [ ] Done</li></ul>|87|[Elections](http://codeforces.com/problemset/problem/570/A)|Codeforces||Codeforces Round #316 (Div. 2)|1|\n|<ul><li>- [ ] Done</li></ul>|88|[Berland National Library](http://codeforces.com/problemset/problem/567/B)|Codeforces||Codeforces Round #Pi (Div. 2)|1|\n|<ul><li>- [ ] Done</li></ul>|89|[Lineland Mail](http://codeforces.com/problemset/problem/567/A)|Codeforces||Codeforces Round #Pi (Div. 2)|1|\n|<ul><li>- [ ] Done</li></ul>|90|[Currency System in Geraldion](http://codeforces.com/problemset/problem/560/A)|Codeforces||Codeforces Round #313 (Div. 2)|1|\n|<ul><li>- [ ] Done</li></ul>|91|[Lala Land and Apple Trees](http://codeforces.com/problemset/problem/558/A)|Codeforces||Codeforces Round #312 (Div. 2)|1|\n|<ul><li>- [ ] Done</li></ul>|92|[Ilya and Diplomas](http://codeforces.com/problemset/problem/557/A)|Codeforces||Codeforces Round #311 (Div. 2)|1|\n|<ul><li>- [ ] Done</li></ul>|93|[Vanya and Books](http://codeforces.com/problemset/problem/552/B)|Codeforces||Codeforces Round #308 (Div. 2)|1|\n|<ul><li>- [ ] Done</li></ul>|94|[Vanya and Table](http://codeforces.com/problemset/problem/552/A)|Codeforces||Codeforces Round #308 (Div. 2)|1|\n|<ul><li>- [ ] Done</li></ul>|95|[GukiZ and Contest](http://codeforces.com/problemset/problem/551/A)|Codeforces||Codeforces Round #307 (Div. 2)|1|\n|<ul><li>- [ ] Done</li></ul>|96|[Two Substrings](http://codeforces.com/problemset/problem/550/A)|Codeforces||Codeforces Round #306 (Div. 2)|1|\n|<ul><li>- [ ] Done</li></ul>|97|[Face Detection](http://codeforces.com/problemset/problem/549/A)|Codeforces||Looksery Cup 2015|1|\n|<ul><li>- [ ] Done</li></ul>|98|[Mike and Fax](http://codeforces.com/problemset/problem/548/A)|Codeforces||Codeforces Round #305 (Div. 2)|1|\n|<ul><li>- [ ] Done</li></ul>|99|[Soldier and Badges](http://codeforces.com/problemset/problem/546/B)|Codeforces||Codeforces Round #304 (Div. 2)|1|\n|<ul><li>- [ ] Done</li></ul>|100|[Soldier and Bananas](http://codeforces.com/problemset/problem/546/A)|Codeforces||Codeforces Round #304 (Div. 2)|1|\n|<ul><li>- [ ] Done</li></ul>|101|[Queue](http://codeforces.com/problemset/problem/545/D)|Codeforces||Codeforces Round #303 (Div. 2)|1|\n|<ul><li>- [ ] Done</li></ul>|102|[Toy Cars](http://codeforces.com/problemset/problem/545/A)|Codeforces||Codeforces Round #303 (Div. 2)|1|\n|<ul><li>- [ ] Done</li></ul>|103|[Combination Lock](http://codeforces.com/problemset/problem/540/A)|Codeforces||Codeforces Round #301 (Div. 2)|1|\n|<ul><li>- [ ] Done</li></ul>|104|[Quasi Binary](http://codeforces.com/problemset/problem/538/B)|Codeforces||Codeforces Round #300|1|\n|<ul><li>- [ ] Done</li></ul>|105|[Tavas and SaDDas](http://codeforces.com/problemset/problem/535/B)|Codeforces||Codeforces Round #299 (Div. 2)|1|\n|<ul><li>- [ ] Done</li></ul>|106|[Tavas and Nafas](http://codeforces.com/problemset/problem/535/A)|Codeforces||Codeforces Round #299 (Div. 2)|1|\n|<ul><li>- [ ] Done</li></ul>|107|[Exam](http://codeforces.com/problemset/problem/534/A)|Codeforces||Codeforces Round #298 (Div. 2)|1|\n|<ul><li>- [ ] Done</li></ul>|108|[Playing with Paper](http://codeforces.com/problemset/problem/527/A)|Codeforces||Codeforces Round #296 (Div. 2)|1|\n|<ul><li>- [ ] Done</li></ul>|109|[Two Buttons](http://codeforces.com/problemset/problem/520/B)|Codeforces||Codeforces Round #295 (Div. 2)|1|\n|<ul><li>- [ ] Done</li></ul>|110|[Pangram](http://codeforces.com/problemset/problem/520/A)|Codeforces||Codeforces Round #295 (Div. 2)|1|\n|<ul><li>- [ ] Done</li></ul>|111|[A and B and Team Training](http://codeforces.com/problemset/problem/519/C)|Codeforces||Codeforces Round #294 (Div. 2)|1|\n|<ul><li>- [ ] Done</li></ul>|112|[A and B and Compilation Errors](http://codeforces.com/problemset/problem/519/B)|Codeforces||Codeforces Round #294 (Div. 2)|1|\n|<ul><li>- [ ] Done</li></ul>|113|[A and B and Chess](http://codeforces.com/problemset/problem/519/A)|Codeforces||Codeforces Round #294 (Div. 2)|1|\n|<ul><li>- [ ] Done</li></ul>|114|[Chewba?ca and Number](http://codeforces.com/problemset/problem/514/A)|Codeforces||Codeforces Round #291 (Div. 2)|1|\n|<ul><li>- [ ] Done</li></ul>|115|[Fox And Snake](http://codeforces.com/problemset/problem/510/A)|Codeforces||Codeforces Round #290 (Div. 2)|1|\n|<ul><li>- [ ] Done</li></ul>|116|[Maximum in Table](http://codeforces.com/problemset/problem/509/A)|Codeforces||Codeforces Round #289 (Div. 2, ACM ICPC Rules)|1|\n|<ul><li>- [ ] Done</li></ul>|117|[Amr and Music](http://codeforces.com/problemset/problem/507/A)|Codeforces||Codeforces Round #287 (Div. 2)|1|\n|<ul><li>- [ ] Done</li></ul>|118|[Contest](http://codeforces.com/problemset/problem/501/A)|Codeforces||Codeforces Round #285 (Div. 2)|1|\n|<ul><li>- [ ] Done</li></ul>|119|[New Year Transportation](http://codeforces.com/problemset/problem/500/A)|Codeforces||Good Bye 2014|1|\n|<ul><li>- [ ] Done</li></ul>|120|[Watching a movie](http://codeforces.com/problemset/problem/499/A)|Codeforces||Codeforces Round #284 (Div. 2)|1|\n|<ul><li>- [ ] Done</li></ul>|121|[Minimum Difficulty](http://codeforces.com/problemset/problem/496/A)|Codeforces||Codeforces Round #283 (Div. 2)|1|\n|<ul><li>- [ ] Done</li></ul>|122|[Vanya and Cubes](http://codeforces.com/problemset/problem/492/A)|Codeforces||Codeforces Round #280 (Div. 2)|1|\n|<ul><li>- [ ] Done</li></ul>|123|[Team Olympiad](http://codeforces.com/problemset/problem/490/A)|Codeforces||Codeforces Round #279 (Div. 2)|1|\n|<ul><li>- [ ] Done</li></ul>|124|[Given Length and Sum of Digits...](http://codeforces.com/problemset/problem/489/C)|Codeforces||Codeforces Round #277.5 (Div. 2)|1|\n|<ul><li>- [ ] Done</li></ul>|125|[OR in Matrix](http://codeforces.com/problemset/problem/486/B)|Codeforces||Codeforces Round #277 (Div. 2)|1|\n|<ul><li>- [ ] Done</li></ul>|126|[Calculating Function](http://codeforces.com/problemset/problem/486/A)|Codeforces||Codeforces Round #277 (Div. 2)|1|\n|<ul><li>- [ ] Done</li></ul>|127|[Counterexample ](http://codeforces.com/problemset/problem/483/A)|Codeforces||Codeforces Round #275 (Div. 2)|1|\n|<ul><li>- [ ] Done</li></ul>|128|[Initial Bet](http://codeforces.com/problemset/problem/478/A)|Codeforces||Codeforces Round #273 (Div. 2)|1|\n|<ul><li>- [ ] Done</li></ul>|129|[Dreamoon and Stairs](http://codeforces.com/problemset/problem/476/A)|Codeforces||Codeforces Round #272 (Div. 2)|1|\n|<ul><li>- [ ] Done</li></ul>|130|[Worms](http://codeforces.com/problemset/problem/474/B)|Codeforces||Codeforces Round #271 (Div. 2)|1|\n|<ul><li>- [ ] Done</li></ul>|131|[Keyboard](http://codeforces.com/problemset/problem/474/A)|Codeforces||Codeforces Round #271 (Div. 2)|1|\n|<ul><li>- [ ] Done</li></ul>|132|[MUH and Sticks](http://codeforces.com/problemset/problem/471/A)|Codeforces||Codeforces Round #269 (Div. 2)|1|\n|<ul><li>- [ ] Done</li></ul>|133|[I Wanna Be the Guy](http://codeforces.com/problemset/problem/469/A)|Codeforces||Codeforces Round #268 (Div. 2)|1|\n|<ul><li>- [ ] Done</li></ul>|134|[Fedor and New Game](http://codeforces.com/problemset/problem/467/B)|Codeforces||Codeforces Round #267 (Div. 2)|1|\n|<ul><li>- [ ] Done</li></ul>|135|[George and Accommodation](http://codeforces.com/problemset/problem/467/A)|Codeforces||Codeforces Round #267 (Div. 2)|1|\n|<ul><li>- [ ] Done</li></ul>|136|[Inbox (100500)](http://codeforces.com/problemset/problem/465/B)|Codeforces||Codeforces Round #265 (Div. 2)|1|\n|<ul><li>- [ ] Done</li></ul>|137|[inc ARG](http://codeforces.com/problemset/problem/465/A)|Codeforces||Codeforces Round #265 (Div. 2)|1|\n|<ul><li>- [ ] Done</li></ul>|138|[Caisa and Sugar](http://codeforces.com/problemset/problem/463/A)|Codeforces||Codeforces Round #264 (Div. 2)|1|\n|<ul><li>- [ ] Done</li></ul>|139|[Vasya and Socks](http://codeforces.com/problemset/problem/460/A)|Codeforces||Codeforces Round #262 (Div. 2)|1|\n|<ul><li>- [ ] Done</li></ul>|140|[Pashmak and Flowers](http://codeforces.com/problemset/problem/459/B)|Codeforces||Codeforces Round #261 (Div. 2)|1|\n|<ul><li>- [ ] Done</li></ul>|141|[Pashmak and Garden](http://codeforces.com/problemset/problem/459/A)|Codeforces||Codeforces Round #261 (Div. 2)|1|\n|<ul><li>- [ ] Done</li></ul>|142|[Little Pony and Sort by Shift](http://codeforces.com/problemset/problem/454/B)|Codeforces||Codeforces Round #259 (Div. 2)|1|\n|<ul><li>- [ ] Done</li></ul>|143|[Little Pony and Crystal Mine](http://codeforces.com/problemset/problem/454/A)|Codeforces||Codeforces Round #259 (Div. 2)|1|\n|<ul><li>- [ ] Done</li></ul>|144|[Sort the Array](http://codeforces.com/problemset/problem/451/B)|Codeforces||Codeforces Round #258 (Div. 2)|1|\n|<ul><li>- [ ] Done</li></ul>|145|[Game With Sticks](http://codeforces.com/problemset/problem/451/A)|Codeforces||Codeforces Round #258 (Div. 2)|1|\n|<ul><li>- [ ] Done</li></ul>|146|[Jzzhu and Sequences](http://codeforces.com/problemset/problem/450/B)|Codeforces||Codeforces Round #257 (Div. 2)|1|\n|<ul><li>- [ ] Done</li></ul>|147|[Jzzhu and Children](http://codeforces.com/problemset/problem/450/A)|Codeforces||Codeforces Round #257 (Div. 2)|1|\n|<ul><li>- [ ] Done</li></ul>|148|[Suffix Structures](http://codeforces.com/problemset/problem/448/B)|Codeforces||Codeforces Round #256 (Div. 2)|1|\n|<ul><li>- [ ] Done</li></ul>|149|[Rewards](http://codeforces.com/problemset/problem/448/A)|Codeforces||Codeforces Round #256 (Div. 2)|1|\n|<ul><li>- [ ] Done</li></ul>|150|[DZY Loves Strings](http://codeforces.com/problemset/problem/447/B)|Codeforces||Codeforces Round #255 (Div. 2)|1|\n|<ul><li>- [ ] Done</li></ul>|151|[DZY Loves Chessboard](http://codeforces.com/problemset/problem/445/A)|Codeforces||Codeforces Round #254 (Div. 2)|1|\n|<ul><li>- [ ] Done</li></ul>|152|[Anton and Letters](http://codeforces.com/problemset/problem/443/A)|Codeforces||Codeforces Round #253 (Div. 2)|1|\n|<ul><li>- [ ] Done</li></ul>|153|[Valera and Antique Items](http://codeforces.com/problemset/problem/441/A)|Codeforces||Codeforces Round #252 (Div. 2)|1|\n|<ul><li>- [ ] Done</li></ul>|154|[Devu, the Dumb Guy](http://codeforces.com/problemset/problem/439/B)|Codeforces||Codeforces Round #251 (Div. 2)|1|\n|<ul><li>- [ ] Done</li></ul>|155|[Devu, the Singer and Churu, the Joker](http://codeforces.com/problemset/problem/439/A)|Codeforces||Codeforces Round #251 (Div. 2)|1|\n|<ul><li>- [ ] Done</li></ul>|156|[Queue on Bus Stop](http://codeforces.com/problemset/problem/435/A)|Codeforces||Codeforces Round #249 (Div. 2)|1|\n|<ul><li>- [ ] Done</li></ul>|157|[Kuriyama Mirai's Stones](http://codeforces.com/problemset/problem/433/B)|Codeforces||Codeforces Round #248 (Div. 2)|1|\n|<ul><li>- [ ] Done</li></ul>|158|[Choosing Teams](http://codeforces.com/problemset/problem/432/A)|Codeforces||Codeforces Round #246 (Div. 2)|1|\n|<ul><li>- [ ] Done</li></ul>|159|[k-Tree](http://codeforces.com/problemset/problem/431/C)|Codeforces||Codeforces Round #247 (Div. 2)|1|\n|<ul><li>- [ ] Done</li></ul>|160|[Black Square](http://codeforces.com/problemset/problem/431/A)|Codeforces||Codeforces Round #247 (Div. 2)|1|\n|<ul><li>- [ ] Done</li></ul>|161|[Prison Transfer](http://codeforces.com/problemset/problem/427/B)|Codeforces||Codeforces Round #244 (Div. 2)|1|\n|<ul><li>- [ ] Done</li></ul>|162|[Police Recruits](http://codeforces.com/problemset/problem/427/A)|Codeforces||Codeforces Round #244 (Div. 2)|1|\n|<ul><li>- [ ] Done</li></ul>|163|[Gravity Flip](http://codeforces.com/problemset/problem/405/A)|Codeforces||Codeforces Round #238 (Div. 2)|1|\n|<ul><li>- [ ] Done</li></ul>|164|[Valera and X](http://codeforces.com/problemset/problem/404/A)|Codeforces||Codeforces Round #237 (Div. 2)|1|\n|<ul><li>- [ ] Done</li></ul>|165|[Team](http://codeforces.com/problemset/problem/401/C)|Codeforces||Codeforces Round #235 (Div. 2)|1|\n|<ul><li>- [ ] Done</li></ul>|166|[Vanya and Cards](http://codeforces.com/problemset/problem/401/A)|Codeforces||Codeforces Round #235 (Div. 2)|1|\n|<ul><li>- [ ] Done</li></ul>|167|[Bear and Raspberry](http://codeforces.com/problemset/problem/385/A)|Codeforces||Codeforces Round #226 (Div. 2)|1|\n|<ul><li>- [ ] Done</li></ul>|168|[Coder](http://codeforces.com/problemset/problem/384/A)|Codeforces||Codeforces Round #225 (Div. 2)|1|\n|<ul><li>- [ ] Done</li></ul>|169|[Sereja and Dima](http://codeforces.com/problemset/problem/381/A)|Codeforces||Codeforces Round #223 (Div. 2)|1|\n|<ul><li>- [ ] Done</li></ul>|170|[New Year Candles](http://codeforces.com/problemset/problem/379/A)|Codeforces||Good Bye 2013|1|\n|<ul><li>- [ ] Done</li></ul>|171|[Valera and Plates](http://codeforces.com/problemset/problem/369/A)|Codeforces||Codeforces Round #216 (Div. 2)|1|\n|<ul><li>- [ ] Done</li></ul>|172|[Domino](http://codeforces.com/problemset/problem/353/A)|Codeforces||Codeforces Round #205 (Div. 2)|1|\n|<ul><li>- [ ] Done</li></ul>|173|[Jeff and Digits](http://codeforces.com/problemset/problem/352/A)|Codeforces||Codeforces Round #204 (Div. 2)|1|\n|<ul><li>- [ ] Done</li></ul>|174|[TL](http://codeforces.com/problemset/problem/350/A)|Codeforces||Codeforces Round #203 (Div. 2)|1|\n|<ul><li>- [ ] Done</li></ul>|175|[Cinema Line](http://codeforces.com/problemset/problem/349/A)|Codeforces||Codeforces Round #202 (Div. 2)|1|\n|<ul><li>- [ ] Done</li></ul>|176|[Magnets](http://codeforces.com/problemset/problem/344/A)|Codeforces||Codeforces Round #200 (Div. 2)|1|\n|<ul><li>- [ ] Done</li></ul>|177|[Xenia and Ringroad](http://codeforces.com/problemset/problem/339/B)|Codeforces||Codeforces Round #197 (Div. 2)|1|\n|<ul><li>- [ ] Done</li></ul>|178|[Helpful Maths](http://codeforces.com/problemset/problem/339/A)|Codeforces||Codeforces Round #197 (Div. 2)|1|\n|<ul><li>- [ ] Done</li></ul>|179|[Candy Bags](http://codeforces.com/problemset/problem/334/A)|Codeforces||Codeforces Round #194 (Div. 2)|1|\n|<ul><li>- [ ] Done</li></ul>|180|[Cakeminator](http://codeforces.com/problemset/problem/330/A)|Codeforces||Codeforces Round #192 (Div. 2)|1|\n|<ul><li>- [ ] Done</li></ul>|181|[Flipping Game](http://codeforces.com/problemset/problem/327/A)|Codeforces||Codeforces Round #191 (Div. 2)|1|\n|<ul><li>- [ ] Done</li></ul>|182|[Ilya and Queries](http://codeforces.com/problemset/problem/313/B)|Codeforces||Codeforces Round #186 (Div. 2)|1|\n|<ul><li>- [ ] Done</li></ul>|183|[Ilya and Bank Account](http://codeforces.com/problemset/problem/313/A)|Codeforces||Codeforces Round #186 (Div. 2)|1|\n|<ul><li>- [ ] Done</li></ul>|184|[Array](http://codeforces.com/problemset/problem/300/A)|Codeforces||Codeforces Round #181 (Div. 2)|1|\n|<ul><li>- [ ] Done</li></ul>|185|[Shaass and Oskols](http://codeforces.com/problemset/problem/294/A)|Codeforces||Codeforces Round #178 (Div. 2)|1|\n|<ul><li>- [ ] Done</li></ul>|186|[Building Permutation](http://codeforces.com/problemset/problem/285/C)|Codeforces||Codeforces Round #175 (Div. 2)|1|\n|<ul><li>- [ ] Done</li></ul>|187|[Slightly Decreasing Permutations](http://codeforces.com/problemset/problem/285/A)|Codeforces||Codeforces Round #175 (Div. 2)|1|\n|<ul><li>- [ ] Done</li></ul>|188|[Bit++](http://codeforces.com/problemset/problem/282/A)|Codeforces||Codeforces Round #173 (Div. 2)|1|\n|<ul><li>- [ ] Done</li></ul>|189|[Books](http://codeforces.com/problemset/problem/279/B)|Codeforces||Codeforces Round #171 (Div. 2)|1|\n|<ul><li>- [ ] Done</li></ul>|190|[Circle Line](http://codeforces.com/problemset/problem/278/A)|Codeforces||Codeforces Round #170 (Div. 2)|1|\n|<ul><li>- [ ] Done</li></ul>|191|[Little Girl and Maximum Sum](http://codeforces.com/problemset/problem/276/C)|Codeforces||Codeforces Round #169 (Div. 2)|1|\n|<ul><li>- [ ] Done</li></ul>|192|[Lunch Rush](http://codeforces.com/problemset/problem/276/A)|Codeforces||Codeforces Round #169 (Div. 2)|1|\n|<ul><li>- [ ] Done</li></ul>|193|[Lights Out](http://codeforces.com/problemset/problem/275/A)|Codeforces||Codeforces Round #168 (Div. 2)|1|\n|<ul><li>- [ ] Done</li></ul>|194|[Dima and Friends](http://codeforces.com/problemset/problem/272/A)|Codeforces||Codeforces Round #167 (Div. 2)|1|\n|<ul><li>- [ ] Done</li></ul>|195|[Fancy Fence](http://codeforces.com/problemset/problem/270/A)|Codeforces||Codeforces Round #165 (Div. 2)|1|\n|<ul><li>- [ ] Done</li></ul>|196|[Buttons](http://codeforces.com/problemset/problem/268/B)|Codeforces||Codeforces Round #164 (Div. 2)|1|\n|<ul><li>- [ ] Done</li></ul>|197|[Queue at the School](http://codeforces.com/problemset/problem/266/B)|Codeforces||Codeforces Round #163 (Div. 2)|1|\n|<ul><li>- [ ] Done</li></ul>|198|[Stones on the Table](http://codeforces.com/problemset/problem/266/A)|Codeforces||Codeforces Round #163 (Div. 2)|1|\n|<ul><li>- [ ] Done</li></ul>|199|[Roadside Trees (Simplified Edition)](http://codeforces.com/problemset/problem/265/B)|Codeforces||Codeforces Round #162 (Div. 2)|1|\n|<ul><li>- [ ] Done</li></ul>|200|[Colorful Stones (Simplified Edition)](http://codeforces.com/problemset/problem/265/A)|Codeforces||Codeforces Round #162 (Div. 2)|1|\n|<ul><li>- [ ] Done</li></ul>|201|[Beautiful Matrix](http://codeforces.com/problemset/problem/263/A)|Codeforces||Codeforces Round #161 (Div. 2)|1|\n|<ul><li>- [ ] Done</li></ul>|202|[Roma and Lucky Numbers](http://codeforces.com/problemset/problem/262/A)|Codeforces||Codeforces Round #160 (Div. 2)|1|\n|<ul><li>- [ ] Done</li></ul>|203|[Taxi](http://codeforces.com/problemset/problem/158/B)|Codeforces||VK Cup 2012 Qualification Round 1|1|\n|<ul><li>- [ ] Done</li></ul>|204|[Lucky Sum of Digits](http://codeforces.com/problemset/problem/109/A)|Codeforces||Codeforces Beta Round #84 (Div. 1 Only) & Codeforces Beta Round #84 (Div. 2 Only)|1|\n|<ul><li>- [ ] Done</li></ul>|205|[Drazil and Factorial](http://codeforces.com/problemset/problem/515/C)|Codeforces||Codeforces Round #292 (Div. 2) & Codeforces Round #292 (Div. 1)|1|\n|<ul><li>- [ ] Done</li></ul>|206|[Summer Camp](http://codeforces.com/problemset/problem/672/A)|Codeforces||Codeforces Round #352 (Div. 2)|1|\n|<ul><li>- [ ] Done</li></ul>|207|[Different is Good](http://codeforces.com/problemset/problem/672/B)|Codeforces||Codeforces Round #352 (Div. 2)|1|\n|<ul><li>- [ ] Done</li></ul>|208|[Vanya and Fence](http://codeforces.com/problemset/problem/677/A)|Codeforces||Codeforces Round #355 (Div. 2)|1|\n|<ul><li>- [ ] Done</li></ul>|209|[Free Ice Cream](http://codeforces.com/problemset/problem/686/A)|Codeforces||Codeforces Round #359 (Div. 2)|1|\n|<ul><li>- [ ] Done</li></ul>|210|[Bear and Five Cards](http://codeforces.com/problemset/problem/680/A)|Codeforces||Codeforces Round #356 (Div. 2)|1|\n|<ul><li>- [ ] Done</li></ul>|211|[Nicholas and Permutation](http://codeforces.com/problemset/problem/676/A)|Codeforces||Codeforces Round #354 (Div. 2)|1|\n|<ul><li>- [ ] Done</li></ul>|212|[Bear and Finding Criminals](http://codeforces.com/problemset/problem/680/B)|Codeforces||Codeforces Round #356 (Div. 2)|1|\n|<ul><li>- [ ] Done</li></ul>|213|[Opponents](http://codeforces.com/problemset/problem/688/A)|Codeforces||Codeforces Round #360 (Div. 2)|1|\n|<ul><li>- [ ] Done</li></ul>|214|[Identifying tea](https://icpcarchive.ecs.baylor.edu/index.php?option=onlinejudge&page=show_problem&problem=5223)|Live Archive|2015|Latin America|1|\n|<ul><li>- [ ] Done</li></ul>|215|[Watermelon](http://codeforces.com/problemset/problem/4/A)|Codeforces||Codeforces Beta Round #4 (Div. 2 Only)|1|\n|<ul><li>- [ ] Done</li></ul>|216|[Anastasia and pebbles](http://codeforces.com/problemset/problem/789/A)|Codeforces||Codeforces Round #407 (Div. 2)|1|\n|<ul><li>- [ ] Done</li></ul>|217|[Karen and Morning](http://codeforces.com/problemset/problem/816/A)|Codeforces||Codeforces Round #419 (Div. 2)|1|\n|<ul><li>- [ ] Done</li></ul>|218|[Anton and Polyhedrons](http://codeforces.com/problemset/problem/785/A)|Codeforces||Codeforces Round #404 (Div. 2)|1|\n|<ul><li>- [ ] Done</li></ul>|219|[Bear and Big Brother](http://codeforces.com/problemset/problem/791/A)|Codeforces||Codeforces Round #405 (rated, Div. 2, based on VK Cup 2017 Round 1)|1|\n|<ul><li>- [ ] Done</li></ul>|220|[Hulk](http://codeforces.com/problemset/problem/705/A)|Codeforces||Codeforces Round #366 (Div. 2)|1|\n|<ul><li>- [ ] Done</li></ul>|221|[Mishka and Game](http://codeforces.com/problemset/problem/703/A)|Codeforces||Codeforces Round #365 (Div. 2)|1|\n|<ul><li>- [ ] Done</li></ul>|222|[Scarborough Fair](http://codeforces.com/problemset/problem/897/A)|Codeforces||Codeforces Round #449 (Div. 2)|1|\n|<ul><li>- [ ] Done</li></ul>|223|[Bachgold Problem](http://codeforces.com/problemset/problem/749/A)|Codeforces||Codeforces Round #388 (Div. 2)|1|\n|<ul><li>- [ ] Done</li></ul>|224|[Bus to Udayland](http://codeforces.com/problemset/problem/711/A)|Codeforces||Codeforces Round #369 (Div. 2)|1|\n|<ul><li>- [ ] Done</li></ul>|225|[One-dimensional Japanese Crossword](http://codeforces.com/problemset/problem/721/A)|Codeforces||Codeforces Round #374 (Div. 2)|1|\n|<ul><li>- [ ] Done</li></ul>|226|[A Good Contest](http://codeforces.com/problemset/problem/681/A)|Codeforces||Codeforces Round #357 (Div. 2)|1|\n|<ul><li>- [ ] Done</li></ul>|227|[Taymyr is calling you](http://codeforces.com/problemset/problem/764/A)|Codeforces||Codeforces Round #395 (Div. 2)|1|\n|<ul><li>- [ ] Done</li></ul>|228|[Memory and Crow](http://codeforces.com/problemset/problem/712/A)|Codeforces||Codeforces Round #370 (Div. 2)|1|\n|<ul><li>- [ ] Done</li></ul>|229|[Crazy Computer](http://codeforces.com/problemset/problem/716/A)|Codeforces||Codeforces Round #372 (Div. 2)|1|\n|<ul><li>- [ ] Done</li></ul>|230|[Vladik and Courtesy](http://codeforces.com/problemset/problem/811/A)|Codeforces||Codeforces Round #416 (Div. 2)|1|\n|<ul><li>- [ ] Done</li></ul>|231|[Find Extra One](http://codeforces.com/problemset/problem/900/A)|Codeforces||Codeforces Round #450 (Div. 2)|1|\n|<ul><li>- [ ] Done</li></ul>|232|[Hongcow Learns the Cyclic Shift](http://codeforces.com/problemset/problem/745/A)|Codeforces||Codeforces Round #385 (Div. 2)|1|\n|<ul><li>- [ ] Done</li></ul>|233|[Generous Kefa](http://codeforces.com/problemset/problem/841/A)|Codeforces||Codeforces Round #429 (Div. 2)|1|\n|<ul><li>- [ ] Done</li></ul>|234|[Greed](http://codeforces.com/problemset/problem/892/A)|Codeforces||Codeforces Round #446 (Div. 2)|1|\n|<ul><li>- [ ] Done</li></ul>|235|[Brain's Photos](http://codeforces.com/problemset/problem/707/A)|Codeforces||Codeforces Round #368 (Div. 2)|1|\n|<ul><li>- [ ] Done</li></ul>|236|[Ostap and Grasshopper](http://codeforces.com/problemset/problem/735/A)|Codeforces||Codeforces Round #382 (Div. 2)|1|\n|<ul><li>- [ ] Done</li></ul>|237|[Arpa’s hard exam and Mehrdad’s naive cheat](http://codeforces.com/problemset/problem/742/A)|Codeforces||Codeforces Round #383 (Div. 2)|1|\n|<ul><li>- [ ] Done</li></ul>|238|[Timofey and cubes](http://codeforces.com/problemset/problem/764/B)|Codeforces||Codeforces Round #395 (Div. 2)|1|\n|<ul><li>- [ ] Done</li></ul>|239|[Arya and Bran](http://codeforces.com/problemset/problem/839/A)|Codeforces||Codeforces Round #428 (Div. 2)|1|\n|<ul><li>- [ ] Done</li></ul>|240|[An abandoned sentiment from past](http://codeforces.com/problemset/problem/814/A)|Codeforces||Codeforces Round #418 (Div. 2)|1|\n|<ul><li>- [ ] Done</li></ul>|241|[The Useless Toy](http://codeforces.com/problemset/problem/834/A)|Codeforces||Codeforces Round #426 (Div. 2)|1|\n|<ul><li>- [ ] Done</li></ul>|242|[Shell Game](http://codeforces.com/problemset/problem/777/A)|Codeforces||Codeforces Round #401 (Div. 2)|1|\n|<ul><li>- [ ] Done</li></ul>|243|[Borya's Diagnosis](http://codeforces.com/problemset/problem/879/A)|Codeforces||Codeforces Round #443 (Div. 2)|1|\n|<ul><li>- [ ] Done</li></ul>|244|[Beru-taxi](http://codeforces.com/problemset/problem/706/A)|Codeforces||Codeforces Round #367 (Div. 2)|1|\n|<ul><li>- [ ] Done</li></ul>|245|[Odds and Ends](http://codeforces.com/problemset/problem/849/A)|Codeforces||Codeforces Round #431 (Div. 2)|1|\n|<ul><li>- [ ] Done</li></ul>|246|[Snacktower](http://codeforces.com/problemset/problem/767/A)|Codeforces||Codeforces Round #398 (Div. 2)|1|\n|<ul><li>- [ ] Done</li></ul>|247|[Interesting drink](http://codeforces.com/problemset/problem/706/B)|Codeforces||Codeforces Round #367 (Div. 2)|1|\n|<ul><li>- [ ] Done</li></ul>|248|[Chloe and the sequence ](http://codeforces.com/problemset/problem/743/B)|Codeforces||Codeforces Round #384 (Div. 2)|1|\n|<ul><li>- [ ] Done</li></ul>|249|[Memory and Trident](http://codeforces.com/problemset/problem/712/B)|Codeforces||Codeforces Round #370 (Div. 2)|1|\n|<ul><li>- [ ] Done</li></ul>|250|[Vladik and flights](http://codeforces.com/problemset/problem/743/A)|Codeforces||Codeforces Round #384 (Div. 2)|1|\n|<ul><li>- [ ] Done</li></ul>|251|[Filya and Homework](http://codeforces.com/problemset/problem/714/B)|Codeforces||Codeforces Round #371 (Div. 2)|1|\n|<ul><li>- [ ] Done</li></ul>|252|[The Artful Expedient](http://codeforces.com/problemset/problem/869/A)|Codeforces||Codeforces Round #439 (Div. 2)|1|\n|<ul><li>- [ ] Done</li></ul>|253|[1, 10, 100, 1000...](http://acm.timus.ru/problem.aspx?space=1&num=1209)|Timus|||1|\n|<ul><li>- [ ] Done</li></ul>|254|[Simple Equations](https://uva.onlinejudge.org/index.php?option=onlinejudge&page=show_problem&problem=2612)|UVA|||1|\n|<ul><li>- [ ] Done</li></ul>|255|[Normalized Form](https://icpcarchive.ecs.baylor.edu/index.php?option=onlinejudge&page=show_problem&problem=2967)|Live Archive|2010|Africa/Middle East - Arab Contest|1|\n|<ul><li>- [ ] Done</li></ul>|256|[Cut Ribbon](http://codeforces.com/problemset/problem/189/A)|Codeforces||Codeforces Round #119 (Div. 2)|1|\n|<ul><li>- [ ] Done</li></ul>|257|[Shortest path of the king](http://codeforces.com/problemset/problem/3/A)|Codeforces||Codeforces Beta Round #3|1|\n|<ul><li>- [ ] Done</li></ul>|258|[Omar](p?ID=1)|A2 Online Judge|||1|\n|<ul><li>- [ ] Done</li></ul>|259|[Key races](http://codeforces.com/problemset/problem/835/A)|Codeforces||Codeforces Round #427 (Div. 2)|1|\n|<ul><li>- [ ] Done</li></ul>|260|[Cupboards](http://codeforces.com/problemset/problem/248/A)|Codeforces||Codeforces Round #152 (Div. 2)|2|\n|<ul><li>- [ ] Done</li></ul>|261|[Big Segment](http://codeforces.com/problemset/problem/242/B)|Codeforces||Codeforces Round #149 (Div. 2)|2|\n|<ul><li>- [ ] Done</li></ul>|262|[Two Bags of Potatoes](http://codeforces.com/problemset/problem/239/A)|Codeforces||Codeforces Round #148 (Div. 2)|2|\n|<ul><li>- [ ] Done</li></ul>|263|[Effective Approach](http://codeforces.com/problemset/problem/227/B)|Codeforces||Codeforces Round #140 (Div. 2)|2|\n|<ul><li>- [ ] Done</li></ul>|264|[Shooshuns and Sequence ](http://codeforces.com/problemset/problem/222/A)|Codeforces||Codeforces Round #137 (Div. 2)|2|\n|<ul><li>- [ ] Done</li></ul>|265|[Little Elephant and Function](http://codeforces.com/problemset/problem/221/A)|Codeforces||Codeforces Round #136 (Div. 2)|2|\n|<ul><li>- [ ] Done</li></ul>|266|[Little Elephant and Problem](http://codeforces.com/problemset/problem/220/A)|Codeforces||Codeforces Round #136 (Div. 1) & Codeforces Round #136 (Div. 2)|2|\n|<ul><li>- [ ] Done</li></ul>|267|[Airport](http://codeforces.com/problemset/problem/218/B)|Codeforces||Codeforces Round #134 (Div. 2)|2|\n|<ul><li>- [ ] Done</li></ul>|268|[Bicycle Chain](http://codeforces.com/problemset/problem/215/A)|Codeforces||Codeforces Round #132 (Div. 2)|2|\n|<ul><li>- [ ] Done</li></ul>|269|[Prizes, Prizes, more Prizes](http://codeforces.com/problemset/problem/208/D)|Codeforces||Codeforces Round #130 (Div. 2)|2|\n|<ul><li>- [ ] Done</li></ul>|270|[Little Elephant and Rozdil](http://codeforces.com/problemset/problem/205/A)|Codeforces||Codeforces Round #129 (Div. 2)|2|\n|<ul><li>- [ ] Done</li></ul>|271|[Comparing Strings](http://codeforces.com/problemset/problem/186/A)|Codeforces||Codeforces Round #118 (Div. 2)|2|\n|<ul><li>- [ ] Done</li></ul>|272|[Wizards and Demonstration](http://codeforces.com/problemset/problem/168/A)|Codeforces||Codeforces Round #114 (Div. 2)|2|\n|<ul><li>- [ ] Done</li></ul>|273|[Rank List](http://codeforces.com/problemset/problem/166/A)|Codeforces||Codeforces Round #113 (Div. 2)|2|\n|<ul><li>- [ ] Done</li></ul>|274|[Burning Midnight Oil](http://codeforces.com/problemset/problem/165/B)|Codeforces||Codeforces Round #112 (Div. 2)|2|\n|<ul><li>- [ ] Done</li></ul>|275|[Cd and pwd commands](http://codeforces.com/problemset/problem/158/C)|Codeforces||VK Cup 2012 Qualification Round 1|2|\n|<ul><li>- [ ] Done</li></ul>|276|[Lucky Conversion](http://codeforces.com/problemset/problem/145/A)|Codeforces||Codeforces Round #104 (Div. 1) & Codeforces Round #104 (Div. 2)|2|\n|<ul><li>- [ ] Done</li></ul>|277|[Opposites Attract](http://codeforces.com/problemset/problem/131/B)|Codeforces||Codeforces Beta Round #95 (Div. 2)|2|\n|<ul><li>- [ ] Done</li></ul>|278|[Little Pigs and Wolves](http://codeforces.com/problemset/problem/116/B)|Codeforces||Codeforces Beta Round #87 (Div. 2 Only)|2|\n|<ul><li>- [ ] Done</li></ul>|279|[Palindromic Times](http://codeforces.com/problemset/problem/108/A)|Codeforces||Codeforces Beta Round #83 (Div. 2 Only)|2|\n|<ul><li>- [ ] Done</li></ul>|280|[Blackjack](http://codeforces.com/problemset/problem/104/A)|Codeforces||Codeforces Beta Round #80 (Div. 2 Only)|2|\n|<ul><li>- [ ] Done</li></ul>|281|[Sum of Digits](http://codeforces.com/problemset/problem/102/B)|Codeforces||Codeforces Beta Round #79 (Div. 2 Only)|2|\n|<ul><li>- [ ] Done</li></ul>|282|[Restoring Password](http://codeforces.com/problemset/problem/94/A)|Codeforces||Codeforces Beta Round #76 (Div. 2 Only)|2|\n|<ul><li>- [ ] Done</li></ul>|283|[Petya and Countryside](http://codeforces.com/problemset/problem/66/B)|Codeforces||Codeforces Beta Round #61 (Div. 2)|2|\n|<ul><li>- [ ] Done</li></ul>|284|[Sinking Ship](http://codeforces.com/problemset/problem/63/A)|Codeforces||Codeforces Beta Round #59 (Div. 2)|2|\n|<ul><li>- [ ] Done</li></ul>|285|[Next Test](http://codeforces.com/problemset/problem/27/A)|Codeforces||Codeforces Beta Round #27 (Codeforces format, Div. 2)|2|\n|<ul><li>- [ ] Done</li></ul>|286|[Flag](http://codeforces.com/problemset/problem/16/A)|Codeforces||Codeforces Beta Round #16 (Div. 2 Only)|2|\n|<ul><li>- [ ] Done</li></ul>|287|[Chat Servers Outgoing Traffic](http://codeforces.com/problemset/problem/5/A)|Codeforces||Codeforces Beta Round #5|2|\n|<ul><li>- [ ] Done</li></ul>|288|[Ciel and Dancing](http://codeforces.com/problemset/problem/322/A)|Codeforces||Codeforces Round #190 (Div. 2)|2|\n|<ul><li>- [ ] Done</li></ul>|289|[Little Elephant and Magic Square](http://codeforces.com/problemset/problem/259/B)|Codeforces||Codeforces Round #157 (Div. 2)|2|\n|<ul><li>- [ ] Done</li></ul>|290|[Roman Numerals](https://uva.onlinejudge.org/index.php?option=onlinejudge&page=show_problem&problem=2663)|UVA|||2|\n|<ul><li>- [ ] Done</li></ul>|291|[Super Over](http://www.spoj.com/problems/SUPOVR/)|SPOJ|||2|\n|<ul><li>- [ ] Done</li></ul>|292|[Minimum Number](http://www.spoj.com/problems/MINNUM/)|SPOJ|||2|\n|<ul><li>- [ ] Done</li></ul>|293|[Find the Format String](https://icpcarchive.ecs.baylor.edu/index.php?option=onlinejudge&page=show_problem&problem=2201)|Live Archive|2008|Asia - Dhaka|2|\n|<ul><li>- [ ] Done</li></ul>|294|[George and Sleep](http://codeforces.com/problemset/problem/387/A)|Codeforces||Codeforces Round #227 (Div. 2)|2|\n|<ul><li>- [ ] Done</li></ul>|295|[SOLDIERS](http://www.spoj.com/problems/SOLDIERS/)|SPOJ|||2|\n|<ul><li>- [ ] Done</li></ul>|296|[PATHS](http://www.spoj.com/problems/WAYS/)|SPOJ|||2|\n|<ul><li>- [ ] Done</li></ul>|297|[Vasya and Digital Root](http://codeforces.com/problemset/problem/355/A)|Codeforces||Codeforces Round #206 (Div. 2)|2|\n|<ul><li>- [ ] Done</li></ul>|298|[Handball](https://uva.onlinejudge.org/index.php?option=onlinejudge&page=show_problem&problem=4663)|UVA|||2|\n|<ul><li>- [ ] Done</li></ul>|299|[The Alphabet Sticker](p?ID=2)|A2 Online Judge|||2|\n|<ul><li>- [ ] Done</li></ul>|300|[The Child and Homework](http://codeforces.com/problemset/problem/437/A)|Codeforces||Codeforces Round #250 (Div. 2)|2|\n|<ul><li>- [ ] Done</li></ul>|301|[Soroban](http://codeforces.com/problemset/problem/363/A)|Codeforces||Codeforces Round #211 (Div. 2)|2|\n|<ul><li>- [ ] Done</li></ul>|302|[Line to Cashier](http://codeforces.com/problemset/problem/408/A)|Codeforces||Codeforces Round #239 (Div. 2)|2|\n|<ul><li>- [ ] Done</li></ul>|303|[Lever](http://codeforces.com/problemset/problem/376/A)|Codeforces||Codeforces Round #221 (Div. 2)|2|\n|<ul><li>- [ ] Done</li></ul>|304|[Eugeny and Array](http://codeforces.com/problemset/problem/302/A)|Codeforces||Codeforces Round #182 (Div. 2)|2|\n|<ul><li>- [ ] Done</li></ul>|305|[Dima and Continuous Line](http://codeforces.com/problemset/problem/358/A)|Codeforces||Codeforces Round #208 (Div. 2)|2|\n|<ul><li>- [ ] Done</li></ul>|306|[Bridge Hand Evaluator](https://uva.onlinejudge.org/index.php?option=onlinejudge&page=show_problem&problem=403)|UVA|||2|\n|<ul><li>- [ ] Done</li></ul>|307|[Bear and Three Balls](http://codeforces.com/problemset/problem/653/A)|Codeforces||IndiaHacks 2016 - Online Edition (Div. 1 + Div. 2)|2|\n|<ul><li>- [ ] Done</li></ul>|308|[Little Artem and Grasshopper](http://codeforces.com/problemset/problem/641/A)|Codeforces||VK Cup 2016 - Round 2|2|\n|<ul><li>- [ ] Done</li></ul>|309|[Bear and Displayed Friends](http://codeforces.com/problemset/problem/639/A)|Codeforces||VK Cup 2016 - Round 1|2|\n|<ul><li>- [ ] Done</li></ul>|310|[Print Check](http://codeforces.com/problemset/problem/631/B)|Codeforces||Codeforces Round #344 (Div. 2)|2|\n|<ul><li>- [ ] Done</li></ul>|311|[Interview](http://codeforces.com/problemset/problem/631/A)|Codeforces||Codeforces Round #344 (Div. 2)|2|\n|<ul><li>- [ ] Done</li></ul>|312|[Robot Sequence](http://codeforces.com/problemset/problem/626/A)|Codeforces||8VC Venture Cup 2016 - Elimination Round|2|\n|<ul><li>- [ ] Done</li></ul>|313|[K-special Tables](http://codeforces.com/problemset/problem/625/C)|Codeforces||Codeforces Round #342 (Div. 2)|2|\n|<ul><li>- [ ] Done</li></ul>|314|[The Time](http://codeforces.com/problemset/problem/622/B)|Codeforces||Educational Codeforces Round 7|2|\n|<ul><li>- [ ] Done</li></ul>|315|[Infinite Sequence](http://codeforces.com/problemset/problem/622/A)|Codeforces||Educational Codeforces Round 7|2|\n|<ul><li>- [ ] Done</li></ul>|316|[Grandfather Dovlet’s calculator](http://codeforces.com/problemset/problem/620/B)|Codeforces||Educational Codeforces Round 6|2|\n|<ul><li>- [ ] Done</li></ul>|317|[Slime Combining](http://codeforces.com/problemset/problem/618/A)|Codeforces||Wunder Fund Round 2016 (Div. 1 + Div. 2 combined)|2|\n|<ul><li>- [ ] Done</li></ul>|318|[Comparing Two Long Integers](http://codeforces.com/problemset/problem/616/A)|Codeforces||Educational Codeforces Round 5|2|\n|<ul><li>- [ ] Done</li></ul>|319|[Gena's Code](http://codeforces.com/problemset/problem/614/B)|Codeforces||Codeforces Round #339 (Div. 2)|2|\n|<ul><li>- [ ] Done</li></ul>|320|[New Year and Domino](http://codeforces.com/problemset/problem/611/C)|Codeforces||Good Bye 2015|2|\n|<ul><li>- [ ] Done</li></ul>|321|[New Year and Old Property](http://codeforces.com/problemset/problem/611/B)|Codeforces||Good Bye 2015|2|\n|<ul><li>- [ ] Done</li></ul>|322|[Vika and Squares](http://codeforces.com/problemset/problem/610/B)|Codeforces||Codeforces Round #337 (Div. 2)|2|\n|<ul><li>- [ ] Done</li></ul>|323|[The Best Gift](http://codeforces.com/problemset/problem/609/B)|Codeforces||Educational Codeforces Round 3|2|\n|<ul><li>- [ ] Done</li></ul>|324|[Saitama Destroys Hotel](http://codeforces.com/problemset/problem/608/A)|Codeforces||Codeforces Round #336 (Div. 2)|2|\n|<ul><li>- [ ] Done</li></ul>|325|[Magic Spheres](http://codeforces.com/problemset/problem/606/A)|Codeforces||Codeforces Round #335 (Div. 2)|2|\n|<ul><li>- [ ] Done</li></ul>|326|[Queries on a String](http://codeforces.com/problemset/problem/598/B)|Codeforces||Educational Codeforces Round 1|2|\n|<ul><li>- [ ] Done</li></ul>|327|[Wilbur and Swimming Pool](http://codeforces.com/problemset/problem/596/A)|Codeforces||Codeforces Round #331 (Div. 2)|2|\n|<ul><li>- [ ] Done</li></ul>|328|[PawnChess](http://codeforces.com/problemset/problem/592/A)|Codeforces||Codeforces Round #328 (Div. 2)|2|\n|<ul><li>- [ ] Done</li></ul>|329|[Rebranding](http://codeforces.com/problemset/problem/591/B)|Codeforces||Codeforces Round #327 (Div. 2)|2|\n|<ul><li>- [ ] Done</li></ul>|330|[Lottery](http://codeforces.com/problemset/problem/589/I)|Codeforces||2015-2016 ACM-ICPC, NEERC, Southern Subregional Contest (Online Mirror, ACM-ICPC Rules, Teams Preferred)|2|\n|<ul><li>- [ ] Done</li></ul>|331|[Laurenty and Shop](http://codeforces.com/problemset/problem/586/B)|Codeforces||Codeforces Round #325 (Div. 2)|2|\n|<ul><li>- [ ] Done</li></ul>|332|[Developing Skills](http://codeforces.com/problemset/problem/581/C)|Codeforces||Codeforces Round #322 (Div. 2)|2|\n|<ul><li>- [ ] Done</li></ul>|333|[Replacement](http://codeforces.com/problemset/problem/570/C)|Codeforces||Codeforces Round #316 (Div. 2)|2|\n|<ul><li>- [ ] Done</li></ul>|334|[Gerald is into Art](http://codeforces.com/problemset/problem/560/B)|Codeforces||Codeforces Round #313 (Div. 2)|2|\n|<ul><li>- [ ] Done</li></ul>|335|[Amr and The Large Array](http://codeforces.com/problemset/problem/558/B)|Codeforces||Codeforces Round #312 (Div. 2)|2|\n|<ul><li>- [ ] Done</li></ul>|336|[Pasha and Tea](http://codeforces.com/problemset/problem/557/B)|Codeforces||Codeforces Round #311 (Div. 2)|2|\n|<ul><li>- [ ] Done</li></ul>|337|[Case of Fake Numbers](http://codeforces.com/problemset/problem/556/B)|Codeforces||Codeforces Round #310 (Div. 2)|2|\n|<ul><li>- [ ] Done</li></ul>|338|[Case of Matryoshkas](http://codeforces.com/problemset/problem/555/A)|Codeforces||Codeforces Round #310 (Div. 1) & Codeforces Round #310 (Div. 2)|2|\n|<ul><li>- [ ] Done</li></ul>|339|[Mike and Fun](http://codeforces.com/problemset/problem/548/B)|Codeforces||Codeforces Round #305 (Div. 2)|2|\n|<ul><li>- [ ] Done</li></ul>|340|[Sea and Islands](http://codeforces.com/problemset/problem/544/B)|Codeforces||Codeforces Round #302 (Div. 2)|2|\n|<ul><li>- [ ] Done</li></ul>|341|[Set of Strings](http://codeforces.com/problemset/problem/544/A)|Codeforces||Codeforces Round #302 (Div. 2)|2|\n|<ul><li>- [ ] Done</li></ul>|342|[Tourist's Notes](http://codeforces.com/problemset/problem/538/C)|Codeforces||Codeforces Round #300|2|\n|<ul><li>- [ ] Done</li></ul>|343|[Cutting Banner](http://codeforces.com/problemset/problem/538/A)|Codeforces||Codeforces Round #300|2|\n|<ul><li>- [ ] Done</li></ul>|344|[Photo to Remember](http://codeforces.com/problemset/problem/522/B)|Codeforces||VK Cup 2015 - Qualification Round 1|2|\n|<ul><li>- [ ] Done</li></ul>|345|[Anya and Smartphone](http://codeforces.com/problemset/problem/518/C)|Codeforces||Codeforces Round #293 (Div. 2)|2|\n|<ul><li>- [ ] Done</li></ul>|346|[Tanya and Postcard](http://codeforces.com/problemset/problem/518/B)|Codeforces||Codeforces Round #293 (Div. 2)|2|\n|<ul><li>- [ ] Done</li></ul>|347|[Painting Pebbles](http://codeforces.com/problemset/problem/509/B)|Codeforces||Codeforces Round #289 (Div. 2, ACM ICPC Rules)|2|\n|<ul><li>- [ ] Done</li></ul>|348|[Mr. Kitayuta's Gift](http://codeforces.com/problemset/problem/505/A)|Codeforces||Codeforces Round #286 (Div. 1) & Codeforces Round #286 (Div. 2) & Codeforces Round #286 (Div. 1) & Codeforces Round #286 (Div. 2)|2|\n|<ul><li>- [ ] Done</li></ul>|349|[New Year Book Reading](http://codeforces.com/problemset/problem/500/C)|Codeforces||Good Bye 2014|2|\n|<ul><li>- [ ] Done</li></ul>|350|[Removing Columns](http://codeforces.com/problemset/problem/496/C)|Codeforces||Codeforces Round #283 (Div. 2) & Codeforces Round #283 (Div. 1)|2|\n|<ul><li>- [ ] Done</li></ul>|351|[Digital Counter](http://codeforces.com/problemset/problem/495/A)|Codeforces||Codeforces Round #282 (Div. 2)|2|\n|<ul><li>- [ ] Done</li></ul>|352|[Vasya and Wrestling](http://codeforces.com/problemset/problem/493/B)|Codeforces||Codeforces Round #281 (Div. 2)|2|\n|<ul><li>- [ ] Done</li></ul>|353|[Vasya and Football](http://codeforces.com/problemset/problem/493/A)|Codeforces||Codeforces Round #281 (Div. 2)|2|\n|<ul><li>- [ ] Done</li></ul>|354|[SwapSort](http://codeforces.com/problemset/problem/489/A)|Codeforces||Codeforces Round #277.5 (Div. 2)|2|\n|<ul><li>- [ ] Done</li></ul>|355|[Palindrome Transformation](http://codeforces.com/problemset/problem/486/C)|Codeforces||Codeforces Round #277 (Div. 2)|2|\n|<ul><li>- [ ] Done</li></ul>|356|[Factory](http://codeforces.com/problemset/problem/485/A)|Codeforces||Codeforces Round #276 (Div. 2)|2|\n|<ul><li>- [ ] Done</li></ul>|357|[Towers](http://codeforces.com/problemset/problem/479/B)|Codeforces||Codeforces Round #274 (Div. 2)|2|\n|<ul><li>- [ ] Done</li></ul>|358|[Strongly Connected City](http://codeforces.com/problemset/problem/475/B)|Codeforces||Bayan 2015 Contest Warm Up|2|\n|<ul><li>- [ ] Done</li></ul>|359|[Chat Online](http://codeforces.com/problemset/problem/469/B)|Codeforces||Codeforces Round #268 (Div. 2)|2|\n|<ul><li>- [ ] Done</li></ul>|360|[George and Job](http://codeforces.com/problemset/problem/467/C)|Codeforces||Codeforces Round #267 (Div. 2)|2|\n|<ul><li>- [ ] Done</li></ul>|361|[Little Dima and Equation](http://codeforces.com/problemset/problem/460/B)|Codeforces||Codeforces Round #262 (Div. 2)|2|\n|<ul><li>- [ ] Done</li></ul>|362|[Eevee](http://codeforces.com/problemset/problem/452/A)|Codeforces||MemSQL Start[c]UP 2.0 - Round 1|2|\n|<ul><li>- [ ] Done</li></ul>|363|[DZY Loves Hash](http://codeforces.com/problemset/problem/447/A)|Codeforces||Codeforces Round #255 (Div. 2)|2|\n|<ul><li>- [ ] Done</li></ul>|364|[DZY Loves Sequences](http://codeforces.com/problemset/problem/446/A)|Codeforces||Codeforces Round #255 (Div. 1) & Codeforces Round #255 (Div. 2)|2|\n|<ul><li>- [ ] Done</li></ul>|365|[Valera and Tubes ](http://codeforces.com/problemset/problem/441/C)|Codeforces||Codeforces Round #252 (Div. 2)|2|\n|<ul><li>- [ ] Done</li></ul>|366|[Kitahara Haruki's Gift](http://codeforces.com/problemset/problem/433/A)|Codeforces||Codeforces Round #248 (Div. 2)|2|\n|<ul><li>- [ ] Done</li></ul>|367|[Football Kit](http://codeforces.com/problemset/problem/432/B)|Codeforces||Codeforces Round #246 (Div. 2)|2|\n|<ul><li>- [ ] Done</li></ul>|368|[Shower Line](http://codeforces.com/problemset/problem/431/B)|Codeforces||Codeforces Round #247 (Div. 2)|2|\n|<ul><li>- [ ] Done</li></ul>|369|[Sereja and Mugs](http://codeforces.com/problemset/problem/426/A)|Codeforces||Codeforces Round #243 (Div. 2)|2|\n|<ul><li>- [ ] Done</li></ul>|370|[Squats](http://codeforces.com/problemset/problem/424/A)|Codeforces||Codeforces Round #242 (Div. 2)|2|\n|<ul><li>- [ ] Done</li></ul>|371|[Mashmokh and Lights](http://codeforces.com/problemset/problem/415/A)|Codeforces||Codeforces Round #240 (Div. 2)|2|\n|<ul><li>- [ ] Done</li></ul>|372|[Inna and Choose Options](http://codeforces.com/problemset/problem/400/A)|Codeforces||Codeforces Round #234 (Div. 2)|2|\n|<ul><li>- [ ] Done</li></ul>|373|[Fox and Cross](http://codeforces.com/problemset/problem/389/B)|Codeforces||Codeforces Round #228 (Div. 2)|2|\n|<ul><li>- [ ] Done</li></ul>|374|[Bear and Strings](http://codeforces.com/problemset/problem/385/B)|Codeforces||Codeforces Round #226 (Div. 2)|2|\n|<ul><li>- [ ] Done</li></ul>|375|[Ksenia and Pan Scales](http://codeforces.com/problemset/problem/382/A)|Codeforces||Codeforces Round #224 (Div. 2)|2|\n|<ul><li>- [ ] Done</li></ul>|376|[New Year Present](http://codeforces.com/problemset/problem/379/B)|Codeforces||Good Bye 2013|2|\n|<ul><li>- [ ] Done</li></ul>|377|[Collecting Beats is Fun](http://codeforces.com/problemset/problem/373/A)|Codeforces||Codeforces Round #219 (Div. 2)|2|\n|<ul><li>- [ ] Done</li></ul>|378|[Sereja and Coat Rack](http://codeforces.com/problemset/problem/368/A)|Codeforces||Codeforces Round #215 (Div. 2)|2|\n|<ul><li>- [ ] Done</li></ul>|379|[The Fibonacci Segment](http://codeforces.com/problemset/problem/365/B)|Codeforces||Codeforces Round #213 (Div. 2)|2|\n|<ul><li>- [ ] Done</li></ul>|380|[Good Number](http://codeforces.com/problemset/problem/365/A)|Codeforces||Codeforces Round #213 (Div. 2)|2|\n|<ul><li>- [ ] Done</li></ul>|381|[Fixing Typos](http://codeforces.com/problemset/problem/363/C)|Codeforces||Codeforces Round #211 (Div. 2)|2|\n|<ul><li>- [ ] Done</li></ul>|382|[Petya and Staircases](http://codeforces.com/problemset/problem/362/B)|Codeforces||Codeforces Round #212 (Div. 2)|2|\n|<ul><li>- [ ] Done</li></ul>|383|[Levko and Table](http://codeforces.com/problemset/problem/361/A)|Codeforces||Codeforces Round #210 (Div. 2)|2|\n|<ul><li>- [ ] Done</li></ul>|384|[Table](http://codeforces.com/problemset/problem/359/A)|Codeforces||Codeforces Round #209 (Div. 2)|2|\n|<ul><li>- [ ] Done</li></ul>|385|[Group of Students](http://codeforces.com/problemset/problem/357/A)|Codeforces||Codeforces Round #207 (Div. 2)|2|\n|<ul><li>- [ ] Done</li></ul>|386|[Jeff and Periods](http://codeforces.com/problemset/problem/352/B)|Codeforces||Codeforces Round #204 (Div. 2)|2|\n|<ul><li>- [ ] Done</li></ul>|387|[Fixed Points](http://codeforces.com/problemset/problem/347/B)|Codeforces||Codeforces Round #201 (Div. 2)|2|\n|<ul><li>- [ ] Done</li></ul>|388|[Difference Row](http://codeforces.com/problemset/problem/347/A)|Codeforces||Codeforces Round #201 (Div. 2)|2|\n|<ul><li>- [ ] Done</li></ul>|389|[Alternating Current](http://codeforces.com/problemset/problem/343/B)|Codeforces||Codeforces Round #200 (Div. 1) & Codeforces Round #200 (Div. 2)|2|\n|<ul><li>- [ ] Done</li></ul>|390|[Xenia and Divisors](http://codeforces.com/problemset/problem/342/A)|Codeforces||Codeforces Round #199 (Div. 2)|2|\n|<ul><li>- [ ] Done</li></ul>|391|[Vasily the Bear and Triangle](http://codeforces.com/problemset/problem/336/A)|Codeforces||Codeforces Round #195 (Div. 2)|2|\n|<ul><li>- [ ] Done</li></ul>|392|[Strings of Power](http://codeforces.com/problemset/problem/318/B)|Codeforces||Codeforces Round #188 (Div. 2)|2|\n|<ul><li>- [ ] Done</li></ul>|393|[Sail](http://codeforces.com/problemset/problem/298/B)|Codeforces||Codeforces Round #180 (Div. 2)|2|\n|<ul><li>- [ ] Done</li></ul>|394|[Greg and Array](http://codeforces.com/problemset/problem/295/A)|Codeforces||Codeforces Round #179 (Div. 1) & Codeforces Round #179 (Div. 2)|2|\n|<ul><li>- [ ] Done</li></ul>|395|[Polo the Penguin and Matrix](http://codeforces.com/problemset/problem/289/B)|Codeforces||Codeforces Round #177 (Div. 2)|2|\n|<ul><li>- [ ] Done</li></ul>|396|[IQ Test](http://codeforces.com/problemset/problem/287/A)|Codeforces||Codeforces Round #176 (Div. 2)|2|\n|<ul><li>- [ ] Done</li></ul>|397|[Find Marble](http://codeforces.com/problemset/problem/285/B)|Codeforces||Codeforces Round #175 (Div. 2)|2|\n|<ul><li>- [ ] Done</li></ul>|398|[Beautiful Sets of Points](http://codeforces.com/problemset/problem/268/C)|Codeforces||Codeforces Round #164 (Div. 2)|2|\n|<ul><li>- [ ] Done</li></ul>|399|[Escape from Stones](http://codeforces.com/problemset/problem/264/A)|Codeforces||Codeforces Round #162 (Div. 1) & Codeforces Round #162 (Div. 2)|2|\n|<ul><li>- [ ] Done</li></ul>|400|[Squares](http://codeforces.com/problemset/problem/263/B)|Codeforces||Codeforces Round #161 (Div. 2)|2|\n|<ul><li>- [ ] Done</li></ul>|401|[Adding Digits](http://codeforces.com/problemset/problem/260/A)|Codeforces||Codeforces Round #158 (Div. 2)|2|\n|<ul><li>- [ ] Done</li></ul>|402|[Lucky Substring](http://codeforces.com/problemset/problem/122/B)|Codeforces||Codeforces Beta Round #91 (Div. 2 Only)|2|\n|<ul><li>- [ ] Done</li></ul>|403|[Hexadecimal's Numbers](http://codeforces.com/problemset/problem/9/C)|Codeforces||Codeforces Beta Round #9 (Div. 2 Only)|2|\n|<ul><li>- [ ] Done</li></ul>|404|[Little Robber Girl's Zoo](http://codeforces.com/problemset/problem/686/B)|Codeforces||Codeforces Round #359 (Div. 2)|2|\n|<ul><li>- [ ] Done</li></ul>|405|[Vanya and Food Processor](http://codeforces.com/problemset/problem/677/B)|Codeforces||Codeforces Round #355 (Div. 2)|2|\n|<ul><li>- [ ] Done</li></ul>|406|[Meta-Loopless Sorts](https://uva.onlinejudge.org/index.php?option=onlinejudge&page=show_problem&problem=46)|UVA|||2|\n|<ul><li>- [ ] Done</li></ul>|407|[Thor](http://codeforces.com/problemset/problem/704/A)|Codeforces||Codeforces Round #366 (Div. 1) & Codeforces Round #366 (Div. 2)|2|\n|<ul><li>- [ ] Done</li></ul>|408|[Arpa and a research in Mexican wave](http://codeforces.com/problemset/problem/851/A)|Codeforces||Codeforces Round #432 (Div. 2, based on IndiaHacks Final Round 2017)|2|\n|<ul><li>- [ ] Done</li></ul>|409|[Okabe and Future Gadget Laboratory](http://codeforces.com/problemset/problem/821/A)|Codeforces||Codeforces Round #420 (Div. 2)|2|\n|<ul><li>- [ ] Done</li></ul>|410|[Mister B and Book Reading](http://codeforces.com/problemset/problem/820/A)|Codeforces||Codeforces Round #421 (Div. 2)|2|\n|<ul><li>- [ ] Done</li></ul>|411|[Straight <<A>>](http://codeforces.com/problemset/problem/810/A)|Codeforces||Codeforces Round #415 (Div. 2)|2|\n|<ul><li>- [ ] Done</li></ul>|412|[The Festive Evening](http://codeforces.com/problemset/problem/834/B)|Codeforces||Codeforces Round #426 (Div. 2)|2|\n|<ul><li>- [ ] Done</li></ul>|413|[Ilya and tic-tac-toe game](http://codeforces.com/problemset/problem/754/B)|Codeforces||Codeforces Round #390 (Div. 2)|2|\n|<ul><li>- [ ] Done</li></ul>|414|[Alyona and copybooks](http://codeforces.com/problemset/problem/740/A)|Codeforces||Codeforces Round #381 (Div. 2)|2|\n|<ul><li>- [ ] Done</li></ul>|415|[Sagheer and Crossroads](http://codeforces.com/problemset/problem/812/A)|Codeforces||Codeforces Round #417 (Div. 2)|2|\n|<ul><li>- [ ] Done</li></ul>|416|[Wrath](http://codeforces.com/problemset/problem/892/B)|Codeforces||Codeforces Round #446 (Div. 2)|2|\n|<ul><li>- [ ] Done</li></ul>|417|[Vladik and Complicated Book](http://codeforces.com/problemset/problem/811/B)|Codeforces||Codeforces Round #416 (Div. 2)|2|\n|<ul><li>- [ ] Done</li></ul>|418|[Not Afraid](http://codeforces.com/problemset/problem/787/B)|Codeforces||Codeforces Round #406 (Div. 2)|2|\n|<ul><li>- [ ] Done</li></ul>|419|[Mishka and trip](http://codeforces.com/problemset/problem/703/B)|Codeforces||Codeforces Round #365 (Div. 2)|2|\n|<ul><li>- [ ] Done</li></ul>|420|[Table Tennis](http://codeforces.com/problemset/problem/879/B)|Codeforces||Codeforces Round #443 (Div. 2)|2|\n|<ul><li>- [ ] Done</li></ul>|421|[The Child and Toy](http://codeforces.com/problemset/problem/437/C)|Codeforces||Codeforces Round #250 (Div. 2) & Codeforces Round #250 (Div. 1)|2|\n|<ul><li>- [ ] Done</li></ul>|422|[Code Parsing](http://codeforces.com/problemset/problem/255/B)|Codeforces||Codeforces Round #156 (Div. 2)|3|\n|<ul><li>- [ ] Done</li></ul>|423|[Internet Address](http://codeforces.com/problemset/problem/245/B)|Codeforces||CROC-MBTU 2012, Elimination Round (ACM-ICPC)|3|\n|<ul><li>- [ ] Done</li></ul>|424|[System Administrator](http://codeforces.com/problemset/problem/245/A)|Codeforces||CROC-MBTU 2012, Elimination Round (ACM-ICPC)|3|\n|<ul><li>- [ ] Done</li></ul>|425|[Dividing Orange](http://codeforces.com/problemset/problem/244/A)|Codeforces||Codeforces Round #150 (Div. 2)|3|\n|<ul><li>- [ ] Done</li></ul>|426|[Heads or Tails](http://codeforces.com/problemset/problem/242/A)|Codeforces||Codeforces Round #149 (Div. 2)|3|\n|<ul><li>- [ ] Done</li></ul>|427|[Dice Tower](http://codeforces.com/problemset/problem/225/A)|Codeforces||Codeforces Round #139 (Div. 2)|3|\n|<ul><li>- [ ] Done</li></ul>|428|[Array](http://codeforces.com/problemset/problem/224/B)|Codeforces||Codeforces Round #138 (Div. 2)|3|\n|<ul><li>- [ ] Done</li></ul>|429|[Cosmic Tables](http://codeforces.com/problemset/problem/222/B)|Codeforces||Codeforces Round #137 (Div. 2)|3|\n|<ul><li>- [ ] Done</li></ul>|430|[Little Elephant and Numbers](http://codeforces.com/problemset/problem/221/B)|Codeforces||Codeforces Round #136 (Div. 2)|3|\n|<ul><li>- [ ] Done</li></ul>|431|[Tiling with Hexagons](http://codeforces.com/problemset/problem/216/A)|Codeforces||Codeforces Round #133 (Div. 2)|3|\n|<ul><li>- [ ] Done</li></ul>|432|[Two Problems](http://codeforces.com/problemset/problem/203/A)|Codeforces||Codeforces Round #128 (Div. 2)|3|\n|<ul><li>- [ ] Done</li></ul>|433|[Exams](http://codeforces.com/problemset/problem/194/A)|Codeforces||Codeforces Round #122 (Div. 2)|3|\n|<ul><li>- [ ] Done</li></ul>|434|[Funky Numbers](http://codeforces.com/problemset/problem/192/A)|Codeforces||Codeforces Round #121 (Div. 2)|3|\n|<ul><li>- [ ] Done</li></ul>|435|[Vasya's Calendar](http://codeforces.com/problemset/problem/182/B)|Codeforces||Codeforces Round #117 (Div. 2)|3|\n|<ul><li>- [ ] Done</li></ul>|436|[Phone Code](http://codeforces.com/problemset/problem/172/A)|Codeforces||Croc Champ 2012 - Qualification Round|3|\n|<ul><li>- [ ] Done</li></ul>|437|[Phone Numbers](http://codeforces.com/problemset/problem/151/B)|Codeforces||Codeforces Round #107 (Div. 2)|3|\n|<ul><li>- [ ] Done</li></ul>|438|[Postcards and photos](http://codeforces.com/problemset/problem/137/A)|Codeforces||Codeforces Beta Round #98 (Div. 2)|3|\n|<ul><li>- [ ] Done</li></ul>|439|[Replacement](http://codeforces.com/problemset/problem/135/A)|Codeforces||Codeforces Beta Round #97 (Div. 1) & Codeforces Beta Round #97 (Div. 2)|3|\n|<ul><li>- [ ] Done</li></ul>|440|[Unary](http://codeforces.com/problemset/problem/133/B)|Codeforces||Codeforces Beta Round #96 (Div. 2)|3|\n|<ul><li>- [ ] Done</li></ul>|441|[Canvas Frames](http://codeforces.com/problemset/problem/127/B)|Codeforces||Codeforces Beta Round #93 (Div. 2 Only)|3|\n|<ul><li>- [ ] Done</li></ul>|442|[Lucky Sum](http://codeforces.com/problemset/problem/121/A)|Codeforces||Codeforces Beta Round #91 (Div. 1 Only) & Codeforces Beta Round #91 (Div. 2 Only)|3|\n|<ul><li>- [ ] Done</li></ul>|443|[Card Game](http://codeforces.com/problemset/problem/106/A)|Codeforces||Codeforces Beta Round #82 (Div. 2)|3|\n|<ul><li>- [ ] Done</li></ul>|444|[Testing Pants for Sadness](http://codeforces.com/problemset/problem/103/A)|Codeforces||Codeforces Beta Round #80 (Div. 1 Only) & Codeforces Beta Round #80 (Div. 2 Only)|3|\n|<ul><li>- [ ] Done</li></ul>|445|[Powerful array](http://codeforces.com/problemset/problem/86/D)|Codeforces||Yandex.Algorithm 2011 Round 2|3|\n|<ul><li>- [ ] Done</li></ul>|446|[Plug-in](http://codeforces.com/problemset/problem/81/A)|Codeforces||Yandex.Algorithm Open 2011 Qualification 1|3|\n|<ul><li>- [ ] Done</li></ul>|447|[Easter Eggs](http://codeforces.com/problemset/problem/78/B)|Codeforces||Codeforces Beta Round #70 (Div. 2)|3|\n|<ul><li>- [ ] Done</li></ul>|448|[Haiku](http://codeforces.com/problemset/problem/78/A)|Codeforces||Codeforces Beta Round #70 (Div. 2)|3|\n|<ul><li>- [ ] Done</li></ul>|449|[Room Leader](http://codeforces.com/problemset/problem/74/A)|Codeforces||Codeforces Beta Round #68|3|\n|<ul><li>- [ ] Done</li></ul>|450|[Petya and Java](http://codeforces.com/problemset/problem/66/A)|Codeforces||Codeforces Beta Round #61 (Div. 2)|3|\n|<ul><li>- [ ] Done</li></ul>|451|[Bar](http://codeforces.com/problemset/problem/56/A)|Codeforces||Codeforces Beta Round #52 (Div. 2)|3|\n|<ul><li>- [ ] Done</li></ul>|452|[Sleuth](http://codeforces.com/problemset/problem/49/A)|Codeforces||Codeforces Beta Round #46 (Div. 2)|3|\n|<ul><li>- [ ] Done</li></ul>|453|[Ball Game](http://codeforces.com/problemset/problem/46/A)|Codeforces||School Personal Contest #2 (Winter Computer School 2010/11) - Codeforces Beta Round #43 (ACM-ICPC Rules)|3|\n|<ul><li>- [ ] Done</li></ul>|454|[Letter](http://codeforces.com/problemset/problem/43/B)|Codeforces||Codeforces Beta Round #42 (Div. 2)|3|\n|<ul><li>- [ ] Done</li></ul>|455|[Worms Evolution](http://codeforces.com/problemset/problem/31/A)|Codeforces||Codeforces Beta Round #31 (Div. 2, Codeforces format)|3|\n|<ul><li>- [ ] Done</li></ul>|456|[Phone numbers](http://codeforces.com/problemset/problem/25/B)|Codeforces||Codeforces Beta Round #25 (Div. 2 Only)|3|\n|<ul><li>- [ ] Done</li></ul>|457|[Stripe](http://codeforces.com/problemset/problem/18/C)|Codeforces||Codeforces Beta Round #18 (Div. 2 Only)|3|\n|<ul><li>- [ ] Done</li></ul>|458|[Burglar and Matches](http://codeforces.com/problemset/problem/16/B)|Codeforces||Codeforces Beta Round #16 (Div. 2 Only)|3|\n|<ul><li>- [ ] Done</li></ul>|459|[Letter](http://codeforces.com/problemset/problem/14/A)|Codeforces||Codeforces Beta Round #14 (Div. 2)|3|\n|<ul><li>- [ ] Done</li></ul>|460|[Numbers](http://codeforces.com/problemset/problem/13/A)|Codeforces||Codeforces Beta Round #13|3|\n|<ul><li>- [ ] Done</li></ul>|461|[Correct Solution?](http://codeforces.com/problemset/problem/12/B)|Codeforces||Codeforces Beta Round #12 (Div 2 Only)|3|\n|<ul><li>- [ ] Done</li></ul>|462|[Super Agent](http://codeforces.com/problemset/problem/12/A)|Codeforces||Codeforces Beta Round #12 (Div 2 Only)|3|\n|<ul><li>- [ ] Done</li></ul>|463|[Increasing Sequence](http://codeforces.com/problemset/problem/11/A)|Codeforces||Codeforces Beta Round #11|3|\n|<ul><li>- [ ] Done</li></ul>|464|[President's Office](http://codeforces.com/problemset/problem/6/B)|Codeforces||Codeforces Beta Round #6 (Div. 2 Only)|3|\n|<ul><li>- [ ] Done</li></ul>|465|[Tic-tac-toe](http://codeforces.com/problemset/problem/3/C)|Codeforces||Codeforces Beta Round #3|3|\n|<ul><li>- [ ] Done</li></ul>|466|[Can you play carrom !!!](http://www.spoj.com/problems/CARRHIM/)|SPOJ|||3|\n|<ul><li>- [ ] Done</li></ul>|467|[Blackjack](https://icpcarchive.ecs.baylor.edu/index.php?option=onlinejudge&page=show_problem&problem=1051)|Live Archive|2004|North America - Rocky Mountain|3|\n|<ul><li>- [ ] Done</li></ul>|468|[Sockets](http://codeforces.com/problemset/problem/257/A)|Codeforces||Codeforces Round #159 (Div. 2)|3|\n|<ul><li>- [ ] Done</li></ul>|469|[Snow Footprints](http://codeforces.com/problemset/problem/298/A)|Codeforces||Codeforces Round #180 (Div. 2)|3|\n|<ul><li>- [ ] Done</li></ul>|470|[Point on Spiral](http://codeforces.com/problemset/problem/279/A)|Codeforces||Codeforces Round #171 (Div. 2)|3|\n|<ul><li>- [ ] Done</li></ul>|471|[Cows and Primitive Roots](http://codeforces.com/problemset/problem/284/A)|Codeforces||Codeforces Round #174 (Div. 2)|3|\n|<ul><li>- [ ] Done</li></ul>|472|[To Add or Not to Add](http://codeforces.com/problemset/problem/231/C)|Codeforces||Codeforces Round #143 (Div. 2)|3|\n|<ul><li>- [ ] Done</li></ul>|473|[ZigZag](http://community.topcoder.com/stat?c=problem_statement&pm=1259)|TopCoder||TCCC '03 Semifinals 3 - Div1 easy] (4493)|3|\n|<ul><li>- [ ] Done</li></ul>|474|[Seating On Bus](http://codeforces.com/problemset/problem/660/B)|Codeforces||Educational Codeforces Round 11|3|\n|<ul><li>- [ ] Done</li></ul>|475|[Co-prime Array](http://codeforces.com/problemset/problem/660/A)|Codeforces||Educational Codeforces Round 11|3|\n|<ul><li>- [ ] Done</li></ul>|476|[Bicycle Race](http://codeforces.com/problemset/problem/659/D)|Codeforces||Codeforces Round #346 (Div. 2)|3|\n|<ul><li>- [ ] Done</li></ul>|477|[Bear and Reverse Radewoosh](http://codeforces.com/problemset/problem/658/A)|Codeforces||VK Cup 2016 - Round 1 (Div. 2 Edition)|3|\n|<ul><li>- [ ] Done</li></ul>|478|[Little Artem and Matrix](http://codeforces.com/problemset/problem/641/B)|Codeforces||VK Cup 2016 - Round 2|3|\n|<ul><li>- [ ] Done</li></ul>|479|[Voting for Photos](http://codeforces.com/problemset/problem/637/A)|Codeforces||VK Cup 2016 - Qualification Round 1|3|\n|<ul><li>- [ ] Done</li></ul>|480|[Tennis Tournament](http://codeforces.com/problemset/problem/628/A)|Codeforces||Educational Codeforces Round 8|3|\n|<ul><li>- [ ] Done</li></ul>|481|[Guest From the Past](http://codeforces.com/problemset/problem/625/A)|Codeforces||Codeforces Round #342 (Div. 2)|3|\n|<ul><li>- [ ] Done</li></ul>|482|[Not Equal on a Segment](http://codeforces.com/problemset/problem/622/C)|Codeforces||Educational Codeforces Round 7|3|\n|<ul><li>- [ ] Done</li></ul>|483|[Constellation](http://codeforces.com/problemset/problem/618/C)|Codeforces||Wunder Fund Round 2016 (Div. 1 + Div. 2 combined)|3|\n|<ul><li>- [ ] Done</li></ul>|484|[Watering Flowers](http://codeforces.com/problemset/problem/617/C)|Codeforces||Codeforces Round #340 (Div. 2)|3|\n|<ul><li>- [ ] Done</li></ul>|485|[HDD is Outdated Technology](http://codeforces.com/problemset/problem/612/B)|Codeforces||Educational Codeforces Round 4|3|\n|<ul><li>- [ ] Done</li></ul>|486|[The Text Splitting](http://codeforces.com/problemset/problem/612/A)|Codeforces||Educational Codeforces Round 4|3|\n|<ul><li>- [ ] Done</li></ul>|487|[Load Balancing](http://codeforces.com/problemset/problem/609/C)|Codeforces||Educational Codeforces Round 3|3|\n|<ul><li>- [ ] Done</li></ul>|488|[Spongebob and Joke](http://codeforces.com/problemset/problem/599/B)|Codeforces||Codeforces Round #332 (Div. 2)|3|\n|<ul><li>- [ ] Done</li></ul>|489|[Cleaner Robot](http://codeforces.com/problemset/problem/589/J)|Codeforces||2015-2016 ACM-ICPC, NEERC, Southern Subregional Contest (Online Mirror, ACM-ICPC Rules, Teams Preferred)|3|\n|<ul><li>- [ ] Done</li></ul>|490|[Gennady the Dentist](http://codeforces.com/problemset/problem/585/A)|Codeforces||Codeforces Round #325 (Div. 1) & Codeforces Round #325 (Div. 2)|3|\n|<ul><li>- [ ] Done</li></ul>|491|[Finding Team Member](http://codeforces.com/problemset/problem/579/B)|Codeforces||Codeforces Round #320 (Div. 2) [Bayan Thanks-Round]|3|\n|<ul><li>- [ ] Done</li></ul>|492|[Order Book](http://codeforces.com/problemset/problem/572/B)|Codeforces||Codeforces Round #317 [AimFund Thanks-Round] (Div. 2)|3|\n|<ul><li>- [ ] Done</li></ul>|493|[Music](http://codeforces.com/problemset/problem/569/A)|Codeforces||Codeforces Round #315 (Div. 2)|3|\n|<ul><li>- [ ] Done</li></ul>|494|[Primes or Palindromes?](http://codeforces.com/problemset/problem/568/A)|Codeforces||Codeforces Round #315 (Div. 1) & Codeforces Round #315 (Div. 2)|3|\n|<ul><li>- [ ] Done</li></ul>|495|[School Marks](http://codeforces.com/problemset/problem/540/B)|Codeforces||Codeforces Round #301 (Div. 2)|3|\n|<ul><li>- [ ] Done</li></ul>|496|[Glass Carving](http://codeforces.com/problemset/problem/527/C)|Codeforces||Codeforces Round #296 (Div. 2) & Codeforces Round #296 (Div. 1)|3|\n|<ul><li>- [ ] Done</li></ul>|497|[Om Nom and Dark Park](http://codeforces.com/problemset/problem/526/B)|Codeforces||ZeptoLab Code Rush 2015|3|\n|<ul><li>- [ ] Done</li></ul>|498|[King of Thieves](http://codeforces.com/problemset/problem/526/A)|Codeforces||ZeptoLab Code Rush 2015|3|\n|<ul><li>- [ ] Done</li></ul>|499|[Guess Your Way Out!](http://codeforces.com/problemset/problem/507/C)|Codeforces||Codeforces Round #287 (Div. 2)|3|\n|<ul><li>- [ ] Done</li></ul>|500|[Secret Combination](http://codeforces.com/problemset/problem/496/B)|Codeforces||Codeforces Round #283 (Div. 2)|3|\n|<ul><li>- [ ] Done</li></ul>|501|[Vasya and Basketball](http://codeforces.com/problemset/problem/493/C)|Codeforces||Codeforces Round #281 (Div. 2)|3|\n|<ul><li>- [ ] Done</li></ul>|502|[Queue](http://codeforces.com/problemset/problem/490/B)|Codeforces||Codeforces Round #279 (Div. 2)|3|\n|<ul><li>- [ ] Done</li></ul>|503|[Long Jumps](http://codeforces.com/problemset/problem/479/D)|Codeforces||Codeforces Round #274 (Div. 2) & Codeforces Round #274 (Div. 1)|3|\n|<ul><li>- [ ] Done</li></ul>|504|[Bayan Bus](http://codeforces.com/problemset/problem/475/A)|Codeforces||Bayan 2015 Contest Warm Up|3|\n|<ul><li>- [ ] Done</li></ul>|505|[Gargari and Bishops](http://codeforces.com/problemset/problem/463/C)|Codeforces||Codeforces Round #264 (Div. 2)|3|\n|<ul><li>- [ ] Done</li></ul>|506|[Valera and Fruits](http://codeforces.com/problemset/problem/441/B)|Codeforces||Codeforces Round #252 (Div. 2)|3|\n|<ul><li>- [ ] Done</li></ul>|507|[The Child and Set](http://codeforces.com/problemset/problem/437/B)|Codeforces||Codeforces Round #250 (Div. 2)|3|\n|<ul><li>- [ ] Done</li></ul>|508|[Megacity](http://codeforces.com/problemset/problem/424/B)|Codeforces||Codeforces Round #242 (Div. 2)|3|\n|<ul><li>- [ ] Done</li></ul>|509|[Start Up](http://codeforces.com/problemset/problem/420/A)|Codeforces||Coder-Strike 2014 - Finals (online edition, Div. 1) & Coder-Strike 2014 - Finals (online edition, Div. 2)|3|\n|<ul><li>- [ ] Done</li></ul>|510|[Football](http://codeforces.com/problemset/problem/417/C)|Codeforces||RCC 2014 Warmup (Div. 2) & RCC 2014 Warmup (Div. 1)|3|\n|<ul><li>- [ ] Done</li></ul>|511|[Booking System](http://codeforces.com/problemset/problem/416/C)|Codeforces||Codeforces Round #241 (Div. 2)|3|\n|<ul><li>- [ ] Done</li></ul>|512|[Art Union](http://codeforces.com/problemset/problem/416/B)|Codeforces||Codeforces Round #241 (Div. 2)|3|\n|<ul><li>- [ ] Done</li></ul>|513|[Guess a number!](http://codeforces.com/problemset/problem/416/A)|Codeforces||Codeforces Round #241 (Div. 2)|3|\n|<ul><li>- [ ] Done</li></ul>|514|[Password Check](http://codeforces.com/problemset/problem/411/A)|Codeforces||Coder-Strike 2014 - Qualification Round|3|\n|<ul><li>- [ ] Done</li></ul>|515|[A + B Strikes Back](http://codeforces.com/problemset/problem/409/H)|Codeforces||April Fools Day Contest 2014|3|\n|<ul><li>- [ ] Done</li></ul>|516|[Garland](http://codeforces.com/problemset/problem/408/B)|Codeforces||Codeforces Round #239 (Div. 2)|3|\n|<ul><li>- [ ] Done</li></ul>|517|[Long Path](http://codeforces.com/problemset/problem/407/B)|Codeforces||Codeforces Round #239 (Div. 1) & Codeforces Round #239 (Div. 2)|3|\n|<ul><li>- [ ] Done</li></ul>|518|[Triangle](http://codeforces.com/problemset/problem/407/A)|Codeforces||Codeforces Round #239 (Div. 1) & Codeforces Round #239 (Div. 2)|3|\n|<ul><li>- [ ] Done</li></ul>|519|[Unusual Product](http://codeforces.com/problemset/problem/405/C)|Codeforces||Codeforces Round #238 (Div. 2) & Codeforces Round #238 (Div. 1)|3|\n|<ul><li>- [ ] Done</li></ul>|520|[Sereja and Contests](http://codeforces.com/problemset/problem/401/B)|Codeforces||Codeforces Round #235 (Div. 2)|3|\n|<ul><li>- [ ] Done</li></ul>|521|[Inna and New Matrix of Candies](http://codeforces.com/problemset/problem/400/B)|Codeforces||Codeforces Round #234 (Div. 2)|3|\n|<ul><li>- [ ] Done</li></ul>|522|[Bear and Prime Numbers](http://codeforces.com/problemset/problem/385/C)|Codeforces||Codeforces Round #226 (Div. 2)|3|\n|<ul><li>- [ ] Done</li></ul>|523|[Arithmetic Progression](http://codeforces.com/problemset/problem/382/C)|Codeforces||Codeforces Round #224 (Div. 2)|3|\n|<ul><li>- [ ] Done</li></ul>|524|[Sereja and Stairs](http://codeforces.com/problemset/problem/381/B)|Codeforces||Codeforces Round #223 (Div. 2)|3|\n|<ul><li>- [ ] Done</li></ul>|525|[K-Periodic Array](http://codeforces.com/problemset/problem/371/A)|Codeforces||Codeforces Round #218 (Div. 2)|3|\n|<ul><li>- [ ] Done</li></ul>|526|[Valera and Contest](http://codeforces.com/problemset/problem/369/B)|Codeforces||Codeforces Round #216 (Div. 2)|3|\n|<ul><li>- [ ] Done</li></ul>|527|[Sereja and Algorithm ](http://codeforces.com/problemset/problem/367/A)|Codeforces||Codeforces Round #215 (Div. 1)|3|\n|<ul><li>- [ ] Done</li></ul>|528|[Dima and To-do List](http://codeforces.com/problemset/problem/366/B)|Codeforces||Codeforces Round #214 (Div. 2)|3|\n|<ul><li>- [ ] Done</li></ul>|529|[Dima and Guards](http://codeforces.com/problemset/problem/366/A)|Codeforces||Codeforces Round #214 (Div. 2)|3|\n|<ul><li>- [ ] Done</li></ul>|530|[Flag Day](http://codeforces.com/problemset/problem/357/B)|Codeforces||Codeforces Round #207 (Div. 2)|3|\n|<ul><li>- [ ] Done</li></ul>|531|[Vasya and Public Transport](http://codeforces.com/problemset/problem/355/B)|Codeforces||Codeforces Round #206 (Div. 2)|3|\n|<ul><li>- [ ] Done</li></ul>|532|[Bombs](http://codeforces.com/problemset/problem/350/C)|Codeforces||Codeforces Round #203 (Div. 2)|3|\n|<ul><li>- [ ] Done</li></ul>|533|[Maximum Absurdity](http://codeforces.com/problemset/problem/332/B)|Codeforces||Codeforces Round #193 (Div. 2)|3|\n|<ul><li>- [ ] Done</li></ul>|534|[Down the Hatch!](http://codeforces.com/problemset/problem/332/A)|Codeforces||Codeforces Round #193 (Div. 2)|3|\n|<ul><li>- [ ] Done</li></ul>|535|[Sereja and Array](http://codeforces.com/problemset/problem/315/B)|Codeforces||Codeforces Round #187 (Div. 2)|3|\n|<ul><li>- [ ] Done</li></ul>|536|[Ilya and Matrix](http://codeforces.com/problemset/problem/313/C)|Codeforces||Codeforces Round #186 (Div. 2)|3|\n|<ul><li>- [ ] Done</li></ul>|537|[Whose sentence is it?](http://codeforces.com/problemset/problem/312/A)|Codeforces||Codeforces Round #185 (Div. 2)|3|\n|<ul><li>- [ ] Done</li></ul>|538|[Lucky Permutation Triple](http://codeforces.com/problemset/problem/303/A)|Codeforces||Codeforces Round #183 (Div. 1) & Codeforces Round #183 (Div. 2)|3|\n|<ul><li>- [ ] Done</li></ul>|539|[Eugeny and Play List](http://codeforces.com/problemset/problem/302/B)|Codeforces||Codeforces Round #182 (Div. 2)|3|\n|<ul><li>- [ ] Done</li></ul>|540|[Network Topology](http://codeforces.com/problemset/problem/292/B)|Codeforces||Croc Champ 2013 - Round 1|3|\n|<ul><li>- [ ] Done</li></ul>|541|[Spyke Talks](http://codeforces.com/problemset/problem/291/A)|Codeforces||Croc Champ 2013 - Qualification Round|3|\n|<ul><li>- [ ] Done</li></ul>|542|[Polo the Penguin and Segments ](http://codeforces.com/problemset/problem/289/A)|Codeforces||Codeforces Round #177 (Div. 2)|3|\n|<ul><li>- [ ] Done</li></ul>|543|[Cows and Poker Game](http://codeforces.com/problemset/problem/284/B)|Codeforces||Codeforces Round #174 (Div. 2)|3|\n|<ul><li>- [ ] Done</li></ul>|544|[Cows and Sequence](http://codeforces.com/problemset/problem/283/A)|Codeforces||Codeforces Round #174 (Div. 1) & Codeforces Round #174 (Div. 2)|3|\n|<ul><li>- [ ] Done</li></ul>|545|[XOR and OR](http://codeforces.com/problemset/problem/282/C)|Codeforces||Codeforces Round #173 (Div. 2)|3|\n|<ul><li>- [ ] Done</li></ul>|546|[Ladder](http://codeforces.com/problemset/problem/279/C)|Codeforces||Codeforces Round #171 (Div. 2)|3|\n|<ul><li>- [ ] Done</li></ul>|547|[Little Girl and Maximum XOR](http://codeforces.com/problemset/problem/276/D)|Codeforces||Codeforces Round #169 (Div. 2)|3|\n|<ul><li>- [ ] Done</li></ul>|548|[Dima and Staircase](http://codeforces.com/problemset/problem/272/C)|Codeforces||Codeforces Round #167 (Div. 2) & Codeforces Round #167 (Div. 1)|3|\n|<ul><li>- [ ] Done</li></ul>|549|[Multithreading](http://codeforces.com/problemset/problem/270/B)|Codeforces||Codeforces Round #165 (Div. 2)|3|\n|<ul><li>- [ ] Done</li></ul>|550|[Playing Cubes](http://codeforces.com/problemset/problem/257/B)|Codeforces||Codeforces Round #159 (Div. 2)|3|\n|<ul><li>- [ ] Done</li></ul>|551|[Little Xor](http://codeforces.com/problemset/problem/252/A)|Codeforces||Codeforces Round #153 (Div. 2)|3|\n|<ul><li>- [ ] Done</li></ul>|552|[Easy Number Challenge](http://codeforces.com/problemset/problem/236/B)|Codeforces||Codeforces Round #146 (Div. 2)|3|\n|<ul><li>- [ ] Done</li></ul>|553|[LLPS](http://codeforces.com/problemset/problem/202/A)|Codeforces||Codeforces Round #127 (Div. 2)|3|\n|<ul><li>- [ ] Done</li></ul>|554|[Common Divisors](http://codeforces.com/problemset/problem/182/D)|Codeforces||Codeforces Round #117 (Div. 2)|3|\n|<ul><li>- [ ] Done</li></ul>|555|[Ternary Logic](http://codeforces.com/problemset/problem/136/B)|Codeforces||Codeforces Beta Round #97 (Div. 2)|3|\n|<ul><li>- [ ] Done</li></ul>|556|[Pyramid of Glasses](http://codeforces.com/problemset/problem/676/B)|Codeforces||Codeforces Round #354 (Div. 2)|3|\n|<ul><li>- [ ] Done</li></ul>|557|[Vanya and Label](http://codeforces.com/problemset/problem/677/C)|Codeforces||Codeforces Round #355 (Div. 2)|3|\n|<ul><li>- [ ] Done</li></ul>|558|[Petya and Exam](http://codeforces.com/problemset/problem/832/B)|Codeforces||Codeforces Round #425 (Div. 2)|3|\n|<ul><li>- [ ] Done</li></ul>|559|[Karen and Game](http://codeforces.com/problemset/problem/815/A)|Codeforces||Codeforces Round #419 (Div. 1) & Codeforces Round #419 (Div. 2)|3|\n|<ul><li>- [ ] Done</li></ul>|560|[Mike and Cellphone](http://codeforces.com/problemset/problem/689/A)|Codeforces||Codeforces Round #361 (Div. 2)|3|\n|<ul><li>- [ ] Done</li></ul>|561|[Hongcow Solves A Puzzle](http://codeforces.com/problemset/problem/745/B)|Codeforces||Codeforces Round #385 (Div. 2)|3|\n|<ul><li>- [ ] Done</li></ul>|562|[Alyona and Spreadsheet](http://codeforces.com/problemset/problem/777/C)|Codeforces||Codeforces Round #401 (Div. 2)|3|\n|<ul><li>- [ ] Done</li></ul>|563|[Voting](http://codeforces.com/problemset/problem/749/C)|Codeforces||Codeforces Round #388 (Div. 2)|3|\n|<ul><li>- [ ] Done</li></ul>|564|[Cloud of Hashtags](http://codeforces.com/problemset/problem/777/D)|Codeforces||Codeforces Round #401 (Div. 2)|3|\n|<ul><li>- [ ] Done</li></ul>|565|[Masha and geometric depression](http://codeforces.com/problemset/problem/789/B)|Codeforces||Codeforces Round #407 (Div. 2)|3|\n|<ul><li>- [ ] Done</li></ul>|566|[Chilly Willy](http://codeforces.com/problemset/problem/248/B)|Codeforces||Codeforces Round #152 (Div. 2)|4|\n|<ul><li>- [ ] Done</li></ul>|567|[Mishap in Club](http://codeforces.com/problemset/problem/245/E)|Codeforces||CROC-MBTU 2012, Elimination Round (ACM-ICPC)|4|\n|<ul><li>- [ ] Done</li></ul>|568|[Weather](http://codeforces.com/problemset/problem/234/C)|Codeforces||Codeforces Round #145 (Div. 2, ACM-ICPC Rules)|4|\n|<ul><li>- [ ] Done</li></ul>|569|[Lefthanders and Righthanders ](http://codeforces.com/problemset/problem/234/A)|Codeforces||Codeforces Round #145 (Div. 2, ACM-ICPC Rules)|4|\n|<ul><li>- [ ] Done</li></ul>|570|[Two Tables](http://codeforces.com/problemset/problem/228/B)|Codeforces||Codeforces Round #141 (Div. 2)|4|\n|<ul><li>- [ ] Done</li></ul>|571|[Special Offer! Super Price 999 Bourles!](http://codeforces.com/problemset/problem/219/B)|Codeforces||Codeforces Round #135 (Div. 2)|4|\n|<ul><li>- [ ] Done</li></ul>|572|[Mountain Scenery](http://codeforces.com/problemset/problem/218/A)|Codeforces||Codeforces Round #134 (Div. 2)|4|\n|<ul><li>- [ ] Done</li></ul>|573|[About Bacteria](http://codeforces.com/problemset/problem/198/A)|Codeforces||Codeforces Round #125 (Div. 1) & Codeforces Round #125 (Div. 2)|4|\n|<ul><li>- [ ] Done</li></ul>|574|[After Training](http://codeforces.com/problemset/problem/195/B)|Codeforces||Codeforces Round #123 (Div. 2)|4|\n|<ul><li>- [ ] Done</li></ul>|575|[Good Matrix Elements](http://codeforces.com/problemset/problem/177/A2)|Codeforces||ABBYY Cup 2.0 - Easy|4|\n|<ul><li>- [ ] Done</li></ul>|576|[Good Matrix Elements](http://codeforces.com/problemset/problem/177/A1)|Codeforces||ABBYY Cup 2.0 - Easy|4|\n|<ul><li>- [ ] Done</li></ul>|577|[Find Pair](http://codeforces.com/problemset/problem/160/C)|Codeforces||Codeforces Round #111 (Div. 2)|4|\n|<ul><li>- [ ] Done</li></ul>|578|[Friends or Not](http://codeforces.com/problemset/problem/159/A)|Codeforces||VK Cup 2012 Qualification Round 2|4|\n|<ul><li>- [ ] Done</li></ul>|579|[Steps](http://codeforces.com/problemset/problem/152/B)|Codeforces||Codeforces Round #108 (Div. 2)|4|\n|<ul><li>- [ ] Done</li></ul>|580|[Escape](http://codeforces.com/problemset/problem/148/B)|Codeforces||Codeforces Round #105 (Div. 2)|4|\n|<ul><li>- [ ] Done</li></ul>|581|[Lucky Mask](http://codeforces.com/problemset/problem/146/B)|Codeforces||Codeforces Round #104 (Div. 2)|4|\n|<ul><li>- [ ] Done</li></ul>|582|[Meeting](http://codeforces.com/problemset/problem/144/B)|Codeforces||Codeforces Round #103 (Div. 2)|4|\n|<ul><li>- [ ] Done</li></ul>|583|[Help Kingdom of Far Far Away 2](http://codeforces.com/problemset/problem/143/B)|Codeforces||Codeforces Round #102 (Div. 2)|4|\n|<ul><li>- [ ] Done</li></ul>|584|[Turing Tape](http://codeforces.com/problemset/problem/132/A)|Codeforces||Codeforces Beta Round #96 (Div. 1) & Codeforces Beta Round #96 (Div. 2)|4|\n|<ul><li>- [ ] Done</li></ul>|585|[Winnie-the-Pooh and honey](http://codeforces.com/problemset/problem/120/C)|Codeforces||School Regional Team Contest, Saratov, 2011|4|\n|<ul><li>- [ ] Done</li></ul>|586|[Quiz League](http://codeforces.com/problemset/problem/120/B)|Codeforces||School Regional Team Contest, Saratov, 2011|4|\n|<ul><li>- [ ] Done</li></ul>|587|[Elevator](http://codeforces.com/problemset/problem/120/A)|Codeforces||School Regional Team Contest, Saratov, 2011|4|\n|<ul><li>- [ ] Done</li></ul>|588|[Petya and Square](http://codeforces.com/problemset/problem/112/B)|Codeforces||Codeforces Beta Round #85 (Div. 2 Only)|4|\n|<ul><li>- [ ] Done</li></ul>|589|[Choosing Laptop](http://codeforces.com/problemset/problem/106/B)|Codeforces||Codeforces Beta Round #82 (Div. 2)|4|\n|<ul><li>- [ ] Done</li></ul>|590|[African Crossword](http://codeforces.com/problemset/problem/90/B)|Codeforces||Codeforces Beta Round #74 (Div. 2 Only)|4|\n|<ul><li>- [ ] Done</li></ul>|591|[Chord](http://codeforces.com/problemset/problem/88/A)|Codeforces||Codeforces Beta Round #73 (Div. 2 Only)|4|\n|<ul><li>- [ ] Done</li></ul>|592|[Progress Bar](http://codeforces.com/problemset/problem/71/B)|Codeforces||Codeforces Beta Round #65 (Div. 2)|4|\n|<ul><li>- [ ] Done</li></ul>|593|[Irrational problem](http://codeforces.com/problemset/problem/68/A)|Codeforces||Codeforces Beta Round #62|4|\n|<ul><li>- [ ] Done</li></ul>|594|[Settlers' Training](http://codeforces.com/problemset/problem/63/B)|Codeforces||Codeforces Beta Round #59 (Div. 2)|4|\n|<ul><li>- [ ] Done</li></ul>|595|[Where Are My Flakes?](http://codeforces.com/problemset/problem/60/A)|Codeforces||Codeforces Beta Round #56|4|\n|<ul><li>- [ ] Done</li></ul>|596|[Fortune Telling](http://codeforces.com/problemset/problem/59/B)|Codeforces||Codeforces Beta Round #55 (Div. 2)|4|\n|<ul><li>- [ ] Done</li></ul>|597|[Autocomplete](http://codeforces.com/problemset/problem/53/A)|Codeforces||Codeforces Beta Round #49 (Div. 2)|4|\n|<ul><li>- [ ] Done</li></ul>|598|[123-sequence](http://codeforces.com/problemset/problem/52/A)|Codeforces||Codeforces Testing Round #1|4|\n|<ul><li>- [ ] Done</li></ul>|599|[Coins](http://codeforces.com/problemset/problem/47/B)|Codeforces||Codeforces Beta Round #44 (Div. 2)|4|\n|<ul><li>- [ ] Done</li></ul>|600|[Indian Summer](http://codeforces.com/problemset/problem/44/A)|Codeforces||School Team Contest #2 (Winter Computer School 2010/11)|4|\n|<ul><li>- [ ] Done</li></ul>|601|[Shell Game](http://codeforces.com/problemset/problem/35/A)|Codeforces||Codeforces Beta Round #35 (Div. 2)|4|\n|<ul><li>- [ ] Done</li></ul>|602|[Page Numbers](http://codeforces.com/problemset/problem/34/C)|Codeforces||Codeforces Beta Round #34 (Div. 2)|4|\n|<ul><li>- [ ] Done</li></ul>|603|[BerOS file system](http://codeforces.com/problemset/problem/20/A)|Codeforces||Codeforces Alpha Round #20 (Codeforces format)|4|\n|<ul><li>- [ ] Done</li></ul>|604|[Young Photographer](http://codeforces.com/problemset/problem/14/B)|Codeforces||Codeforces Beta Round #14 (Div. 2)|4|\n|<ul><li>- [ ] Done</li></ul>|605|[Power Consumption Calculation](http://codeforces.com/problemset/problem/10/A)|Codeforces||Codeforces Beta Round #10|4|\n|<ul><li>- [ ] Done</li></ul>|606|[Running Student](http://codeforces.com/problemset/problem/9/B)|Codeforces||Codeforces Beta Round #9 (Div. 2 Only)|4|\n|<ul><li>- [ ] Done</li></ul>|607|[Center Alignment](http://codeforces.com/problemset/problem/5/B)|Codeforces||Codeforces Beta Round #5|4|\n|<ul><li>- [ ] Done</li></ul>|608|[Troops of Sand Monsters](http://www.spoj.com/problems/TROOPS/)|SPOJ|||4|\n|<ul><li>- [ ] Done</li></ul>|609|[Magic, Wizardry and Wonders](http://codeforces.com/problemset/problem/231/B)|Codeforces||Codeforces Round #143 (Div. 2)|4|\n|<ul><li>- [ ] Done</li></ul>|610|[Magic Box](http://codeforces.com/problemset/problem/231/D)|Codeforces||Codeforces Round #143 (Div. 2)|4|\n|<ul><li>- [ ] Done</li></ul>|611|[Gabriel and Caterpillar](http://codeforces.com/problemset/problem/652/A)|Codeforces||Educational Codeforces Round 10|4|\n|<ul><li>- [ ] Done</li></ul>|612|[Amity Assessment](http://codeforces.com/problemset/problem/645/A)|Codeforces||CROC 2016 - Elimination Round|4|\n|<ul><li>- [ ] Done</li></ul>|613|[Little Artem and Dance](http://codeforces.com/problemset/problem/641/C)|Codeforces||VK Cup 2016 - Round 2|4|\n|<ul><li>- [ ] Done</li></ul>|614|[Promocodes with Mistakes](http://codeforces.com/problemset/problem/637/C)|Codeforces||VK Cup 2016 - Qualification Round 1|4|\n|<ul><li>- [ ] Done</li></ul>|615|[Orchestra](http://codeforces.com/problemset/problem/635/A)|Codeforces||8VC Venture Cup 2016 - Final Round (Div. 2 Edition) & 8VC Venture Cup 2016 - Final Round (Div. 1 Edition)|4|\n|<ul><li>- [ ] Done</li></ul>|616|[Island Puzzle](http://codeforces.com/problemset/problem/634/A)|Codeforces||8VC Venture Cup 2016 - Final Round (Div. 1 Edition) & 8VC Venture Cup 2016 - Final Round (Div. 2 Edition)|4|\n|<ul><li>- [ ] Done</li></ul>|617|[Cracking the Code](http://codeforces.com/problemset/problem/630/L)|Codeforces||Experimental Educational Round: VolBIT Formulas Blitz|4|\n|<ul><li>- [ ] Done</li></ul>|618|[Testing Robots](http://codeforces.com/problemset/problem/606/B)|Codeforces||Codeforces Round #335 (Div. 2)|4|\n|<ul><li>- [ ] Done</li></ul>|619|[Extract Numbers](http://codeforces.com/problemset/problem/600/A)|Codeforces||Educational Codeforces Round 2|4|\n|<ul><li>- [ ] Done</li></ul>|620|[Email Aliases](http://codeforces.com/problemset/problem/589/A)|Codeforces||2015-2016 ACM-ICPC, NEERC, Southern Subregional Contest (Online Mirror, ACM-ICPC Rules, Teams Preferred)|4|\n|<ul><li>- [ ] Done</li></ul>|621|[Three Logos](http://codeforces.com/problemset/problem/581/D)|Codeforces||Codeforces Round #322 (Div. 2)|4|\n|<ul><li>- [ ] Done</li></ul>|622|[ZgukistringZ](http://codeforces.com/problemset/problem/551/B)|Codeforces||Codeforces Round #307 (Div. 2)|4|\n|<ul><li>- [ ] Done</li></ul>|623|[Regular Bridge](http://codeforces.com/problemset/problem/550/D)|Codeforces||Codeforces Round #306 (Div. 2)|4|\n|<ul><li>- [ ] Done</li></ul>|624|[Weird Chess](http://codeforces.com/problemset/problem/538/D)|Codeforces||Codeforces Round #300|4|\n|<ul><li>- [ ] Done</li></ul>|625|[Clique Problem](http://codeforces.com/problemset/problem/527/D)|Codeforces||Codeforces Round #296 (Div. 2) & Codeforces Round #296 (Div. 1)|4|\n|<ul><li>- [ ] Done</li></ul>|626|[Rotate, Flip and Zoom](http://codeforces.com/problemset/problem/523/A)|Codeforces||VK Cup 2015 - Qualification Round 2|4|\n|<ul><li>- [ ] Done</li></ul>|627|[Vanya and Computer Game](http://codeforces.com/problemset/problem/492/D)|Codeforces||Codeforces Round #280 (Div. 2)|4|\n|<ul><li>- [ ] Done</li></ul>|628|[A Lot of Games](http://codeforces.com/problemset/problem/455/B)|Codeforces||Codeforces Round #260 (Div. 1) & Codeforces Round #260 (Div. 2)|4|\n|<ul><li>- [ ] Done</li></ul>|629|[Predict Outcome of the Game](http://codeforces.com/problemset/problem/451/C)|Codeforces||Codeforces Round #258 (Div. 2)|4|\n|<ul><li>- [ ] Done</li></ul>|630|[Forgotten Episode](http://codeforces.com/problemset/problem/440/A)|Codeforces||Testing Round #10|4|\n|<ul><li>- [ ] Done</li></ul>|631|[Devu and Partitioning of the Array](http://codeforces.com/problemset/problem/439/C)|Codeforces||Codeforces Round #251 (Div. 2)|4|\n|<ul><li>- [ ] Done</li></ul>|632|[Om Nom and Spiders](http://codeforces.com/problemset/problem/436/B)|Codeforces||Zepto Code Rush 2014|4|\n|<ul><li>- [ ] Done</li></ul>|633|[Cardiogram](http://codeforces.com/problemset/problem/435/C)|Codeforces||Codeforces Round #249 (Div. 2)|4|\n|<ul><li>- [ ] Done</li></ul>|634|[Sereja and Mirroring](http://codeforces.com/problemset/problem/426/B)|Codeforces||Codeforces Round #243 (Div. 2)|4|\n|<ul><li>- [ ] Done</li></ul>|635|[Pasha and Hamsters](http://codeforces.com/problemset/problem/421/A)|Codeforces||Coder-Strike 2014 - Finals (online edition, Div. 2)|4|\n|<ul><li>- [ ] Done</li></ul>|636|[Pattern](http://codeforces.com/problemset/problem/412/C)|Codeforces||Coder-Strike 2014 - Round 1|4|\n|<ul><li>- [ ] Done</li></ul>|637|[Poster](http://codeforces.com/problemset/problem/412/A)|Codeforces||Coder-Strike 2014 - Round 1|4|\n|<ul><li>- [ ] Done</li></ul>|638|[Toy Sum](http://codeforces.com/problemset/problem/405/D)|Codeforces||Codeforces Round #238 (Div. 2) & Codeforces Round #238 (Div. 1)|4|\n|<ul><li>- [ ] Done</li></ul>|639|[Marathon](http://codeforces.com/problemset/problem/404/B)|Codeforces||Codeforces Round #237 (Div. 2)|4|\n|<ul><li>- [ ] Done</li></ul>|640|[Inna and Huge Candy Matrix](http://codeforces.com/problemset/problem/400/C)|Codeforces||Codeforces Round #234 (Div. 2)|4|\n|<ul><li>- [ ] Done</li></ul>|641|[Multitasking](http://codeforces.com/problemset/problem/384/B)|Codeforces||Codeforces Round #225 (Div. 2)|4|\n|<ul><li>- [ ] Done</li></ul>|642|[Semifinals](http://codeforces.com/problemset/problem/378/B)|Codeforces||Codeforces Round #222 (Div. 2)|4|\n|<ul><li>- [ ] Done</li></ul>|643|[I.O.U.](http://codeforces.com/problemset/problem/376/B)|Codeforces||Codeforces Round #221 (Div. 2)|4|\n|<ul><li>- [ ] Done</li></ul>|644|[Maximum Submatrix 2](http://codeforces.com/problemset/problem/375/B)|Codeforces||Codeforces Round #221 (Div. 1) & Codeforces Round #221 (Div. 2)|4|\n|<ul><li>- [ ] Done</li></ul>|645|[Vessels](http://codeforces.com/problemset/problem/371/D)|Codeforces||Codeforces Round #218 (Div. 2)|4|\n|<ul><li>- [ ] Done</li></ul>|646|[Matrix](http://codeforces.com/problemset/problem/364/A)|Codeforces||Codeforces Round #213 (Div. 1) & Codeforces Round #213 (Div. 2)|4|\n|<ul><li>- [ ] Done</li></ul>|647|[Find Maximum](http://codeforces.com/problemset/problem/353/C)|Codeforces||Codeforces Round #205 (Div. 2)|4|\n|<ul><li>- [ ] Done</li></ul>|648|[Jeff and Rounding](http://codeforces.com/problemset/problem/351/A)|Codeforces||Codeforces Round #204 (Div. 1) & Codeforces Round #204 (Div. 2)|4|\n|<ul><li>- [ ] Done</li></ul>|649|[Xenia and Spies](http://codeforces.com/problemset/problem/342/B)|Codeforces||Codeforces Round #199 (Div. 2)|4|\n|<ul><li>- [ ] Done</li></ul>|650|[Tourist Problem](http://codeforces.com/problemset/problem/340/C)|Codeforces||Codeforces Round #198 (Div. 2) & Codeforces Round #198 (Div. 1)|4|\n|<ul><li>- [ ] Done</li></ul>|651|[Ciel and Robot](http://codeforces.com/problemset/problem/321/A)|Codeforces||Codeforces Round #190 (Div. 1) & Codeforces Round #190 (Div. 2)|4|\n|<ul><li>- [ ] Done</li></ul>|652|[Psychos in a Line](http://codeforces.com/problemset/problem/319/B)|Codeforces||Codeforces Round #189 (Div. 1) & Codeforces Round #189 (Div. 2)|4|\n|<ul><li>- [ ] Done</li></ul>|653|[The Closest Pair](http://codeforces.com/problemset/problem/311/A)|Codeforces||Codeforces Round #185 (Div. 1) & Codeforces Round #185 (Div. 2)|4|\n|<ul><li>- [ ] Done</li></ul>|654|[Command Line Arguments](http://codeforces.com/problemset/problem/291/B)|Codeforces||Croc Champ 2013 - Qualification Round|4|\n|<ul><li>- [ ] Done</li></ul>|655|[Mysterious strings](http://codeforces.com/problemset/problem/290/A)|Codeforces||April Fools Day Contest 2013|4|\n|<ul><li>- [ ] Done</li></ul>|656|[Dima and Sequence](http://codeforces.com/problemset/problem/272/B)|Codeforces||Codeforces Round #167 (Div. 2)|4|\n|<ul><li>- [ ] Done</li></ul>|657|[Secret](http://codeforces.com/problemset/problem/271/C)|Codeforces||Codeforces Round #166 (Div. 2)|4|\n|<ul><li>- [ ] Done</li></ul>|658|[Ancient Prophesy](http://codeforces.com/problemset/problem/260/B)|Codeforces||Codeforces Round #158 (Div. 2)|4|\n|<ul><li>- [ ] Done</li></ul>|659|[Forming Teams](http://codeforces.com/problemset/problem/216/B)|Codeforces||Codeforces Round #133 (Div. 2)|4|\n|<ul><li>- [ ] Done</li></ul>|660|[Walking in the Rain](http://codeforces.com/problemset/problem/192/B)|Codeforces||Codeforces Round #121 (Div. 2)|4|\n|<ul><li>- [ ] Done</li></ul>|661|[Anagram Search](http://codeforces.com/problemset/problem/144/C)|Codeforces||Codeforces Round #103 (Div. 2)|4|\n|<ul><li>- [ ] Done</li></ul>|662|[Fruits](http://codeforces.com/problemset/problem/12/C)|Codeforces||Codeforces Beta Round #12 (Div 2 Only)|4|\n|<ul><li>- [ ] Done</li></ul>|663|[Reberland Linguistics](http://codeforces.com/problemset/problem/666/A)|Codeforces||Codeforces Round #349 (Div. 1) & Codeforces Round #349 (Div. 2)|4|\n|<ul><li>- [ ] Done</li></ul>|664|[Tennis Game](http://codeforces.com/problemset/problem/496/D)|Codeforces||Codeforces Round #283 (Div. 2) & Codeforces Round #283 (Div. 1)|4|\n|<ul><li>- [ ] Done</li></ul>|665|[Riding in a Lift](http://codeforces.com/problemset/problem/479/E)|Codeforces||Codeforces Round #274 (Div. 2) & Codeforces Round #274 (Div. 1)|4|\n|<ul><li>- [ ] Done</li></ul>|666|[Drazil and Tiles](http://codeforces.com/problemset/problem/515/D)|Codeforces||Codeforces Round #292 (Div. 2) & Codeforces Round #292 (Div. 1)|4|\n|<ul><li>- [ ] Done</li></ul>|667|[Vladik and Memorable Trip](http://codeforces.com/problemset/problem/811/C)|Codeforces||Codeforces Round #416 (Div. 2)|4|\n|<ul><li>- [ ] Done</li></ul>|668|[Game of the Rows](http://codeforces.com/problemset/problem/839/B)|Codeforces||Codeforces Round #428 (Div. 2)|4|\n|<ul><li>- [ ] Done</li></ul>|669|[Array Division](http://codeforces.com/problemset/problem/808/D)|Codeforces||Educational Codeforces Round 21|4|\n|<ul><li>- [ ] Done</li></ul>|670|[Road Map](http://codeforces.com/problemset/problem/34/D)|Codeforces||Codeforces Beta Round #34 (Div. 2)|4|\n|<ul><li>- [ ] Done</li></ul>|671|[Jury Size](http://codeforces.com/problemset/problem/254/B)|Codeforces||Codeforces Round #155 (Div. 2)|5|\n|<ul><li>- [ ] Done</li></ul>|672|[Young Table](http://codeforces.com/problemset/problem/237/B)|Codeforces||Codeforces Round #147 (Div. 2)|5|\n|<ul><li>- [ ] Done</li></ul>|673|[Game on Paper](http://codeforces.com/problemset/problem/203/B)|Codeforces||Codeforces Round #128 (Div. 2)|5|\n|<ul><li>- [ ] Done</li></ul>|674|[Cutting Figure](http://codeforces.com/problemset/problem/193/A)|Codeforces||Codeforces Round #122 (Div. 1) & Codeforces Round #122 (Div. 2)|5|\n|<ul><li>- [ ] Done</li></ul>|675|[Series of Crimes](http://codeforces.com/problemset/problem/181/A)|Codeforces||Croc Champ 2012 - Round 2 (Unofficial Div. 2 Edition)|5|\n|<ul><li>- [ ] Done</li></ul>|676|[Robot Bicorn Attack](http://codeforces.com/problemset/problem/175/A)|Codeforces||Codeforces Round #115|5|\n|<ul><li>- [ ] Done</li></ul>|677|[Pseudorandom Sequence Period](http://codeforces.com/problemset/problem/172/B)|Codeforces||Croc Champ 2012 - Qualification Round|5|\n|<ul><li>- [ ] Done</li></ul>|678|[Wizards and Trolleybuses](http://codeforces.com/problemset/problem/167/A)|Codeforces||Codeforces Round #114 (Div. 1) & Codeforces Round #114 (Div. 2)|5|\n|<ul><li>- [ ] Done</li></ul>|679|[Suspects](http://codeforces.com/problemset/problem/156/B)|Codeforces||Codeforces Round #110 (Div. 1) & Codeforces Round #110 (Div. 2)|5|\n|<ul><li>- [ ] Done</li></ul>|680|[Martian Clock](http://codeforces.com/problemset/problem/149/B)|Codeforces||Codeforces Round #106 (Div. 2)|5|\n|<ul><li>- [ ] Done</li></ul>|681|[Punctuation](http://codeforces.com/problemset/problem/147/A)|Codeforces||Codeforces Testing Round #4|5|\n|<ul><li>- [ ] Done</li></ul>|682|[Help General](http://codeforces.com/problemset/problem/142/B)|Codeforces||Codeforces Round #102 (Div. 1) & Codeforces Round #102 (Div. 2)|5|\n|<ul><li>- [ ] Done</li></ul>|683|[Literature Lesson](http://codeforces.com/problemset/problem/138/A)|Codeforces||Codeforces Beta Round #99 (Div. 1) & Codeforces Beta Round #99 (Div. 2)|5|\n|<ul><li>- [ ] Done</li></ul>|684|[Average Numbers](http://codeforces.com/problemset/problem/134/A)|Codeforces||Codeforces Testing Round #3|5|\n|<ul><li>- [ ] Done</li></ul>|685|[Permutations](http://codeforces.com/problemset/problem/124/B)|Codeforces||Codeforces Beta Round #92 (Div. 2 Only)|5|\n|<ul><li>- [ ] Done</li></ul>|686|[Prime Permutation](http://codeforces.com/problemset/problem/123/A)|Codeforces||Codeforces Beta Round #92 (Div. 1 Only) & Codeforces Beta Round #92 (Div. 2 Only)|5|\n|<ul><li>- [ ] Done</li></ul>|687|[Elevator](http://codeforces.com/problemset/problem/117/A)|Codeforces||Codeforces Beta Round #88|5|\n|<ul><li>- [ ] Done</li></ul>|688|[Grammar Lessons](http://codeforces.com/problemset/problem/113/A)|Codeforces||Codeforces Beta Round #86 (Div. 1 Only) & Codeforces Beta Round #86 (Div. 2 Only)|5|\n|<ul><li>- [ ] Done</li></ul>|689|[Help Chef Gerasim](http://codeforces.com/problemset/problem/99/B)|Codeforces||Codeforces Beta Round #78 (Div. 2 Only)|5|\n|<ul><li>- [ ] Done</li></ul>|690|[Friends](http://codeforces.com/problemset/problem/94/B)|Codeforces||Codeforces Beta Round #76 (Div. 2 Only)|5|\n|<ul><li>- [ ] Done</li></ul>|691|[Frames](http://codeforces.com/problemset/problem/93/A)|Codeforces||Codeforces Beta Round #76 (Div. 1 Only) & Codeforces Beta Round #76 (Div. 2 Only)|5|\n|<ul><li>- [ ] Done</li></ul>|692|[Sets](http://codeforces.com/problemset/problem/82/B)|Codeforces||Yandex.Algorithm 2011 Qualification 2|5|\n|<ul><li>- [ ] Done</li></ul>|693|[Sequence Formatting](http://codeforces.com/problemset/problem/81/B)|Codeforces||Yandex.Algorithm Open 2011 Qualification 1|5|\n|<ul><li>- [ ] Done</li></ul>|694|[Facetook Priority Wall](http://codeforces.com/problemset/problem/75/B)|Codeforces||Codeforces Beta Round #67 (Div. 2)|5|\n|<ul><li>- [ ] Done</li></ul>|695|[Subsegments](http://codeforces.com/problemset/problem/69/E)|Codeforces||Codeforces Beta Round #63 (Div. 2)|5|\n|<ul><li>- [ ] Done</li></ul>|696|[Bets](http://codeforces.com/problemset/problem/69/B)|Codeforces||Codeforces Beta Round #63 (Div. 2)|5|\n|<ul><li>- [ ] Done</li></ul>|697|[Square Earth?](http://codeforces.com/problemset/problem/57/A)|Codeforces||Codeforces Beta Round #53|5|\n|<ul><li>- [ ] Done</li></ul>|698|[Spoilt Permutation](http://codeforces.com/problemset/problem/56/B)|Codeforces||Codeforces Beta Round #52 (Div. 2)|5|\n|<ul><li>- [ ] Done</li></ul>|699|[Flea travel](http://codeforces.com/problemset/problem/55/A)|Codeforces||Codeforces Beta Round #51|5|\n|<ul><li>- [ ] Done</li></ul>|700|[Rock-paper-scissors](http://codeforces.com/problemset/problem/48/A)|Codeforces||School Personal Contest #3 (Winter Computer School 2010/11) - Codeforces Beta Round #45 (ACM-ICPC Rules)|5|\n|<ul><li>- [ ] Done</li></ul>|701|[T-shirts from Sponsor](http://codeforces.com/problemset/problem/46/B)|Codeforces||School Personal Contest #2 (Winter Computer School 2010/11) - Codeforces Beta Round #43 (ACM-ICPC Rules)|5|\n|<ul><li>- [ ] Done</li></ul>|702|[Codecraft III](http://codeforces.com/problemset/problem/45/A)|Codeforces||School Team Contest #3 (Winter Computer School 2010/11)|5|\n|<ul><li>- [ ] Done</li></ul>|703|[Guilty --- to the kitchen!](http://codeforces.com/problemset/problem/42/A)|Codeforces||Codeforces Beta Round #41|5|\n|<ul><li>- [ ] Done</li></ul>|704|[Email address](http://codeforces.com/problemset/problem/41/C)|Codeforces||Codeforces Beta Round #40 (Div. 2)|5|\n|<ul><li>- [ ] Done</li></ul>|705|[Find Color](http://codeforces.com/problemset/problem/40/A)|Codeforces||Codeforces Beta Round #39|5|\n|<ul><li>- [ ] Done</li></ul>|706|[Chess](http://codeforces.com/problemset/problem/38/B)|Codeforces||School Personal Contest #1 (Winter Computer School 2010/11) - Codeforces Beta Round #38 (ACM-ICPC Rules)|5|\n|<ul><li>- [ ] Done</li></ul>|707|[Extra-terrestrial Intelligence](http://codeforces.com/problemset/problem/36/A)|Codeforces||Codeforces Beta Round #36|5|\n|<ul><li>- [ ] Done</li></ul>|708|[What is for dinner?](http://codeforces.com/problemset/problem/33/A)|Codeforces||Codeforces Beta Round #33 (Codeforces format)|5|\n|<ul><li>- [ ] Done</li></ul>|709|[Mail Stamps](http://codeforces.com/problemset/problem/29/C)|Codeforces||Codeforces Beta Round #29 (Div. 2, Codeforces format)|5|\n|<ul><li>- [ ] Done</li></ul>|710|[World Football Cup](http://codeforces.com/problemset/problem/19/A)|Codeforces||Codeforces Beta Round #19|5|\n|<ul><li>- [ ] Done</li></ul>|711|[Cottage Village](http://codeforces.com/problemset/problem/15/A)|Codeforces||Codeforces Beta Round #15|5|\n|<ul><li>- [ ] Done</li></ul>|712|[Obsession with Robots](http://codeforces.com/problemset/problem/8/B)|Codeforces||Codeforces Beta Round #8|5|\n|<ul><li>- [ ] Done</li></ul>|713|[Memory Manager](http://codeforces.com/problemset/problem/7/B)|Codeforces||Codeforces Beta Round #7|5|\n|<ul><li>- [ ] Done</li></ul>|714|[Bombing](http://www.spoj.com/problems/BOMB2/)|SPOJ|||5|\n|<ul><li>- [ ] Done</li></ul>|715|[Domino](https://icpcarchive.ecs.baylor.edu/index.php?option=onlinejudge&page=show_problem&problem=1677)|Live Archive|2006|Asia - Hanoi|5|\n|<ul><li>- [ ] Done</li></ul>|716|[On the Road to LCPC](p?ID=79)|A2 Online Judge|||5|\n|<ul><li>- [ ] Done</li></ul>|717|[Buses Between Cities](http://codeforces.com/problemset/problem/665/A)|Codeforces||Educational Codeforces Round 12|5|\n|<ul><li>- [ ] Done</li></ul>|718|[Scrambled](http://codeforces.com/problemset/problem/656/B)|Codeforces||April Fools Day Contest 2016|5|\n|<ul><li>- [ ] Done</li></ul>|719|[Fibonacci-ish](http://codeforces.com/problemset/problem/633/D)|Codeforces||Manthan, Codefest 16|5|\n|<ul><li>- [ ] Done</li></ul>|720|[Spy Syndrome 2](http://codeforces.com/problemset/problem/633/C)|Codeforces||Manthan, Codefest 16|5|\n|<ul><li>- [ ] Done</li></ul>|721|[Boulevard](http://codeforces.com/problemset/problem/589/D)|Codeforces||2015-2016 ACM-ICPC, NEERC, Southern Subregional Contest (Online Mirror, ACM-ICPC Rules, Teams Preferred)|5|\n|<ul><li>- [ ] Done</li></ul>|722|[Lengthening Sticks](http://codeforces.com/problemset/problem/571/A)|Codeforces||Codeforces Round #317 [AimFund Thanks-Round] (Div. 1) & Codeforces Round #317 [AimFund Thanks-Round] (Div. 2)|5|\n|<ul><li>- [ ] Done</li></ul>|723|[Kyoya and Permutation](http://codeforces.com/problemset/problem/553/B)|Codeforces||Codeforces Round #309 (Div. 1) & Codeforces Round #309 (Div. 2)|5|\n|<ul><li>- [ ] Done</li></ul>|724|[Haar Features](http://codeforces.com/problemset/problem/549/D)|Codeforces||Looksery Cup 2015|5|\n|<ul><li>- [ ] Done</li></ul>|725|[Mike and Frog](http://codeforces.com/problemset/problem/547/A)|Codeforces||Codeforces Round #305 (Div. 1) & Codeforces Round #305 (Div. 2)|5|\n|<ul><li>- [ ] Done</li></ul>|726|[Board Game](http://codeforces.com/problemset/problem/533/C)|Codeforces||VK Cup 2015 - Round 2 (unofficial online mirror, Div. 1 only)|5|\n|<ul><li>- [ ] Done</li></ul>|727|[Statistics of Recompressing Videos](http://codeforces.com/problemset/problem/523/D)|Codeforces||VK Cup 2015 - Qualification Round 2|5|\n|<ul><li>- [ ] Done</li></ul>|728|[Sums of Digits](http://codeforces.com/problemset/problem/509/C)|Codeforces||Codeforces Round #289 (Div. 2, ACM ICPC Rules)|5|\n|<ul><li>- [ ] Done</li></ul>|729|[Borya and Hanabi](http://codeforces.com/problemset/problem/442/A)|Codeforces||Codeforces Round #253 (Div. 1) & Codeforces Round #253 (Div. 2)|5|\n|<ul><li>- [ ] Done</li></ul>|730|[Balancer](http://codeforces.com/problemset/problem/440/B)|Codeforces||Testing Round #10|5|\n|<ul><li>- [ ] Done</li></ul>|731|[Ryouko's Memory Note](http://codeforces.com/problemset/problem/433/C)|Codeforces||Codeforces Round #248 (Div. 2) & Codeforces Round #248 (Div. 1)|5|\n|<ul><li>- [ ] Done</li></ul>|732|[Elimination](http://codeforces.com/problemset/problem/417/A)|Codeforces||RCC 2014 Warmup (Div. 2)|5|\n|<ul><li>- [ ] Done</li></ul>|733|[Data Recovery](http://codeforces.com/problemset/problem/413/A)|Codeforces||Coder-Strike 2014 - Round 2|5|\n|<ul><li>- [ ] Done</li></ul>|734|[Pages](http://codeforces.com/problemset/problem/399/A)|Codeforces||Codeforces Round #233 (Div. 2)|5|\n|<ul><li>- [ ] Done</li></ul>|735|[Counting Sticks](http://codeforces.com/problemset/problem/394/A)|Codeforces||Codeforces Round #231 (Div. 2)|5|\n|<ul><li>- [ ] Done</li></ul>|736|[Inna and Alarm Clock](http://codeforces.com/problemset/problem/390/A)|Codeforces||Codeforces Round #229 (Div. 2)|5|\n|<ul><li>- [ ] Done</li></ul>|737|[Fox and Minimal path](http://codeforces.com/problemset/problem/388/B)|Codeforces||Codeforces Round #228 (Div. 1) & Codeforces Round #228 (Div. 2)|5|\n|<ul><li>- [ ] Done</li></ul>|738|[George and Number](http://codeforces.com/problemset/problem/387/C)|Codeforces||Codeforces Round #227 (Div. 2)|5|\n|<ul><li>- [ ] Done</li></ul>|739|[Second-Price Auction](http://codeforces.com/problemset/problem/386/A)|Codeforces||Testing Round #9|5|\n|<ul><li>- [ ] Done</li></ul>|740|[Inna and Dima](http://codeforces.com/problemset/problem/374/C)|Codeforces||Codeforces Round #220 (Div. 2)|5|\n|<ul><li>- [ ] Done</li></ul>|741|[Inna and Pink Pony](http://codeforces.com/problemset/problem/374/A)|Codeforces||Codeforces Round #220 (Div. 2)|5|\n|<ul><li>- [ ] Done</li></ul>|742|[Making Sequences is Fun](http://codeforces.com/problemset/problem/373/B)|Codeforces||Codeforces Round #219 (Div. 2)|5|\n|<ul><li>- [ ] Done</li></ul>|743|[Berland Bingo](http://codeforces.com/problemset/problem/370/B)|Codeforces||Codeforces Round #217 (Div. 2)|5|\n|<ul><li>- [ ] Done</li></ul>|744|[Levko and Array Recovery](http://codeforces.com/problemset/problem/360/A)|Codeforces||Codeforces Round #210 (Div. 1) & Codeforces Round #210 (Div. 2)|5|\n|<ul><li>- [ ] Done</li></ul>|745|[Xenia and Hamming](http://codeforces.com/problemset/problem/356/B)|Codeforces||Codeforces Round #207 (Div. 1) & Codeforces Round #207 (Div. 2)|5|\n|<ul><li>- [ ] Done</li></ul>|746|[Two Heaps](http://codeforces.com/problemset/problem/353/B)|Codeforces||Codeforces Round #205 (Div. 2)|5|\n|<ul><li>- [ ] Done</li></ul>|747|[Vasily the Bear and Sequence](http://codeforces.com/problemset/problem/336/C)|Codeforces||Codeforces Round #195 (Div. 2)|5|\n|<ul><li>- [ ] Done</li></ul>|748|[Square and Rectangles](http://codeforces.com/problemset/problem/325/A)|Codeforces||MemSQL start[c]up Round 1|5|\n|<ul><li>- [ ] Done</li></ul>|749|[Sereja and Contest](http://codeforces.com/problemset/problem/314/A)|Codeforces||Codeforces Round #187 (Div. 1) & Codeforces Round #187 (Div. 2)|5|\n|<ul><li>- [ ] Done</li></ul>|750|[Calendar](http://codeforces.com/problemset/problem/304/B)|Codeforces||Codeforces Round #183 (Div. 2)|5|\n|<ul><li>- [ ] Done</li></ul>|751|[Ksusha the Squirrel](http://codeforces.com/problemset/problem/299/B)|Codeforces||Croc Champ 2013 - Round 2 (Div. 2 Edition)|5|\n|<ul><li>- [ ] Done</li></ul>|752|[SMSC](http://codeforces.com/problemset/problem/292/A)|Codeforces||Croc Champ 2013 - Round 1|5|\n|<ul><li>- [ ] Done</li></ul>|753|[Network Mask](http://codeforces.com/problemset/problem/291/C)|Codeforces||Croc Champ 2013 - Qualification Round|5|\n|<ul><li>- [ ] Done</li></ul>|754|[Orange](http://codeforces.com/problemset/problem/290/D)|Codeforces||April Fools Day Contest 2013|5|\n|<ul><li>- [ ] Done</li></ul>|755|[QR code](http://codeforces.com/problemset/problem/290/B)|Codeforces||April Fools Day Contest 2013|5|\n|<ul><li>- [ ] Done</li></ul>|756|[Polo the Penguin and XOR operation](http://codeforces.com/problemset/problem/288/C)|Codeforces||Codeforces Round #177 (Div. 1) & Codeforces Round #177 (Div. 2)|5|\n|<ul><li>- [ ] Done</li></ul>|757|[Nearest Fraction](http://codeforces.com/problemset/problem/281/B)|Codeforces||Codeforces Round #172 (Div. 2)|5|\n|<ul><li>- [ ] Done</li></ul>|758|[Maximum Xor Secondary](http://codeforces.com/problemset/problem/280/B)|Codeforces||Codeforces Round #172 (Div. 1) & Codeforces Round #172 (Div. 2)|5|\n|<ul><li>- [ ] Done</li></ul>|759|[Convex Shape](http://codeforces.com/problemset/problem/275/B)|Codeforces||Codeforces Round #168 (Div. 2)|5|\n|<ul><li>- [ ] Done</li></ul>|760|[Balls and Boxes](http://codeforces.com/problemset/problem/260/C)|Codeforces||Codeforces Round #158 (Div. 2)|5|\n|<ul><li>- [ ] Done</li></ul>|761|[Bracket Sequence](http://codeforces.com/problemset/problem/223/A)|Codeforces||Codeforces Round #138 (Div. 1) & Codeforces Round #138 (Div. 2)|5|\n|<ul><li>- [ ] Done</li></ul>|762|[Rock-Paper-Scissors](http://codeforces.com/problemset/problem/173/A)|Codeforces||Croc Champ 2012 - Round 1|5|\n|<ul><li>- [ ] Done</li></ul>|763|[Domino](http://codeforces.com/problemset/problem/85/A)|Codeforces||Yandex.Algorithm 2011 Round 1|5|\n|<ul><li>- [ ] Done</li></ul>|764|[Colorful Field](http://codeforces.com/problemset/problem/79/B)|Codeforces||Codeforces Beta Round #71|5|\n|<ul><li>- [ ] Done</li></ul>|765|[Four Segments](http://codeforces.com/problemset/problem/14/C)|Codeforces||Codeforces Beta Round #14 (Div. 2)|5|\n|<ul><li>- [ ] Done</li></ul>|766|[Theseus and labyrinth](http://codeforces.com/problemset/problem/676/D)|Codeforces||Codeforces Round #354 (Div. 2)|5|\n|<ul><li>- [ ] Done</li></ul>|767|[Cards Sorting](http://codeforces.com/problemset/problem/830/B)|Codeforces||Codeforces Round #424 (Div. 1, rated, based on VK Cup Finals) & Codeforces Round #424 (Div. 2, rated, based on VK Cup Finals)|5|\n|<ul><li>- [ ] Done</li></ul>|768|[Bitwise Formula](http://codeforces.com/problemset/problem/778/B)|Codeforces||Codeforces Round #402 (Div. 1) & Codeforces Round #402 (Div. 2)|5|\n|<ul><li>- [ ] Done</li></ul>|769|[Persistent Bookcase ](http://codeforces.com/problemset/problem/707/D)|Codeforces||Codeforces Round #368 (Div. 2)|5|\n|<ul><li>- [ ] Done</li></ul>|770|[Mr. Bender and Square](http://codeforces.com/problemset/problem/255/D)|Codeforces||Codeforces Round #156 (Div. 2) & Codeforces Round #156 (Div. 1)|6|\n|<ul><li>- [ ] Done</li></ul>|771|[Playing with Permutations](http://codeforces.com/problemset/problem/251/B)|Codeforces||Codeforces Round #153 (Div. 1) & Codeforces Round #153 (Div. 2)|6|\n|<ul><li>- [ ] Done</li></ul>|772|[Restoring IPv6](http://codeforces.com/problemset/problem/250/B)|Codeforces||CROC-MBTU 2012, Final Round (Online version, Div. 2)|6|\n|<ul><li>- [ ] Done</li></ul>|773|[Easy Tape Programming](http://codeforces.com/problemset/problem/239/B)|Codeforces||Codeforces Round #148 (Div. 2)|6|\n|<ul><li>- [ ] Done</li></ul>|774|[Practice](http://codeforces.com/problemset/problem/234/G)|Codeforces||Codeforces Round #145 (Div. 2, ACM-ICPC Rules) & Codeforces Round #145 (Div. 1, ACM-ICPC Rules)|6|\n|<ul><li>- [ ] Done</li></ul>|775|[Cinema](http://codeforces.com/problemset/problem/234/D)|Codeforces||Codeforces Round #145 (Div. 2, ACM-ICPC Rules) & Codeforces Round #145 (Div. 1, ACM-ICPC Rules)|6|\n|<ul><li>- [ ] Done</li></ul>|776|[Reducing Fractions](http://codeforces.com/problemset/problem/222/C)|Codeforces||Codeforces Round #137 (Div. 2)|6|\n|<ul><li>- [ ] Done</li></ul>|777|[Hit Ball](http://codeforces.com/problemset/problem/203/D)|Codeforces||Codeforces Round #128 (Div. 2)|6|\n|<ul><li>- [ ] Done</li></ul>|778|[Mathematical Analysis Rocks!](http://codeforces.com/problemset/problem/180/F)|Codeforces||Codeforces Round #116 (Div. 2, ACM-ICPC Rules)|6|\n|<ul><li>- [ ] Done</li></ul>|779|[Plane of Tanks: Pro](http://codeforces.com/problemset/problem/175/B)|Codeforces||Codeforces Round #115|6|\n|<ul><li>- [ ] Done</li></ul>|780|[File List](http://codeforces.com/problemset/problem/174/B)|Codeforces||VK Cup 2012 Round 3 (Unofficial Div. 2 Edition)|6|\n|<ul><li>- [ ] Done</li></ul>|781|[Bus](http://codeforces.com/problemset/problem/172/C)|Codeforces||Croc Champ 2012 - Qualification Round|6|\n|<ul><li>- [ ] Done</li></ul>|782|[Wizards and Minimal Spell](http://codeforces.com/problemset/problem/168/B)|Codeforces||Codeforces Round #114 (Div. 2)|6|\n|<ul><li>- [ ] Done</li></ul>|783|[New Year Cards](http://codeforces.com/problemset/problem/140/B)|Codeforces||Codeforces Round #100|6|\n|<ul><li>- [ ] Done</li></ul>|784|[Wallpaper](http://codeforces.com/problemset/problem/139/B)|Codeforces||Codeforces Beta Round #99 (Div. 2)|6|\n|<ul><li>- [ ] Done</li></ul>|785|[Simple XML](http://codeforces.com/problemset/problem/125/B)|Codeforces||Codeforces Testing Round #2|6|\n|<ul><li>- [ ] Done</li></ul>|786|[Transmigration](http://codeforces.com/problemset/problem/105/A)|Codeforces||Codeforces Beta Round #81|6|\n|<ul><li>- [ ] Done</li></ul>|787|[Hockey](http://codeforces.com/problemset/problem/95/A)|Codeforces||Codeforces Beta Round #77 (Div. 1 Only) & Codeforces Beta Round #77 (Div. 2 Only)|6|\n|<ul><li>- [ ] Done</li></ul>|788|[Keyboard](http://codeforces.com/problemset/problem/88/B)|Codeforces||Codeforces Beta Round #73 (Div. 2 Only)|6|\n|<ul><li>- [ ] Done</li></ul>|789|[Heroes](http://codeforces.com/problemset/problem/77/A)|Codeforces||Codeforces Beta Round #69 (Div. 1 Only) & Codeforces Beta Round #69 (Div. 2 Only)|6|\n|<ul><li>- [ ] Done</li></ul>|790|[Points](http://codeforces.com/problemset/problem/76/E)|Codeforces||All-Ukrainian School Olympiad in Informatics|6|\n|<ul><li>- [ ] Done</li></ul>|791|[Partial Teacher](http://codeforces.com/problemset/problem/67/A)|Codeforces||Manthan 2011|6|\n|<ul><li>- [ ] Done</li></ul>|792|[Harry Potter and the History of Magic](http://codeforces.com/problemset/problem/65/B)|Codeforces||Codeforces Beta Round #60|6|\n|<ul><li>- [ ] Done</li></ul>|793|[Harry Potter and Three Spells](http://codeforces.com/problemset/problem/65/A)|Codeforces||Codeforces Beta Round #60|6|\n|<ul><li>- [ ] Done</li></ul>|794|[Bulls and Cows](http://codeforces.com/problemset/problem/63/C)|Codeforces||Codeforces Beta Round #59 (Div. 2)|6|\n|<ul><li>- [ ] Done</li></ul>|795|[Tyndex.Brome](http://codeforces.com/problemset/problem/62/B)|Codeforces||Codeforces Beta Round #58|6|\n|<ul><li>- [ ] Done</li></ul>|796|[Presents](http://codeforces.com/problemset/problem/54/A)|Codeforces||Codeforces Beta Round #50|6|\n|<ul><li>- [ ] Done</li></ul>|797|[Cheaterius's Problem](http://codeforces.com/problemset/problem/51/A)|Codeforces||Codeforces Beta Round #48|6|\n|<ul><li>- [ ] Done</li></ul>|798|[Land Lot](http://codeforces.com/problemset/problem/48/B)|Codeforces||School Personal Contest #3 (Winter Computer School 2010/11) - Codeforces Beta Round #45 (ACM-ICPC Rules)|6|\n|<ul><li>- [ ] Done</li></ul>|799|[Holidays](http://codeforces.com/problemset/problem/44/C)|Codeforces||School Team Contest #2 (Winter Computer School 2010/11)|6|\n|<ul><li>- [ ] Done</li></ul>|800|[Cola](http://codeforces.com/problemset/problem/44/B)|Codeforces||School Team Contest #2 (Winter Computer School 2010/11)|6|\n|<ul><li>- [ ] Done</li></ul>|801|[Spelling Check](http://codeforces.com/problemset/problem/39/J)|Codeforces||School Team Contest #1 (Winter Computer School 2010/11)|6|\n|<ul><li>- [ ] Done</li></ul>|802|[Multiplication Table](http://codeforces.com/problemset/problem/39/H)|Codeforces||School Team Contest #1 (Winter Computer School 2010/11)|6|\n|<ul><li>- [ ] Done</li></ul>|803|[Schedule](http://codeforces.com/problemset/problem/31/C)|Codeforces||Codeforces Beta Round #31 (Div. 2, Codeforces format)|6|\n|<ul><li>- [ ] Done</li></ul>|804|[Traffic Lights](http://codeforces.com/problemset/problem/29/B)|Codeforces||Codeforces Beta Round #29 (Div. 2, Codeforces format)|6|\n|<ul><li>- [ ] Done</li></ul>|805|[F1 Champions](http://codeforces.com/problemset/problem/24/B)|Codeforces||Codeforces Beta Round #24|6|\n|<ul><li>- [ ] Done</li></ul>|806|[Cinema Cashier](http://codeforces.com/problemset/problem/10/B)|Codeforces||Codeforces Beta Round #10|6|\n|<ul><li>- [ ] Done</li></ul>|807|[PLAHTE](http://www.spoj.com/problems/PLAHTE/)|SPOJ|||6|\n|<ul><li>- [ ] Done</li></ul>|808|[FLING1](http://www.spoj.com/problems/FLING1/)|SPOJ|||6|\n|<ul><li>- [ ] Done</li></ul>|809|[CUBE ROOT](http://www.spoj.com/problems/CUBEROO2/)|SPOJ|||6|\n|<ul><li>- [ ] Done</li></ul>|810|[International Olympiad](http://codeforces.com/problemset/problem/662/D)|Codeforces||CROC 2016 - Final Round [Private, For Onsite Finalists Only]|6|\n|<ul><li>- [ ] Done</li></ul>|811|[Bear and Up-Down](http://codeforces.com/problemset/problem/653/C)|Codeforces||IndiaHacks 2016 - Online Edition (Div. 1 + Div. 2)|6|\n|<ul><li>- [ ] Done</li></ul>|812|[Bear and Polynomials](http://codeforces.com/problemset/problem/639/C)|Codeforces||VK Cup 2016 - Round 1|6|\n|<ul><li>- [ ] Done</li></ul>|813|[Vanya and Brackets](http://codeforces.com/problemset/problem/552/E)|Codeforces||Codeforces Round #308 (Div. 2)|6|\n|<ul><li>- [ ] Done</li></ul>|814|[Brackets in Implications](http://codeforces.com/problemset/problem/550/E)|Codeforces||Codeforces Round #306 (Div. 2)|6|\n|<ul><li>- [ ] Done</li></ul>|815|[Infinite Inversions](http://codeforces.com/problemset/problem/540/E)|Codeforces||Codeforces Round #301 (Div. 2)|6|\n|<ul><li>- [ ] Done</li></ul>|816|[????????, ?? ?????? ???? ??????](http://codeforces.com/problemset/problem/524/A)|Codeforces||VK Cup 2015 - Round 1|6|\n|<ul><li>- [ ] Done</li></ul>|817|[Cubes](http://codeforces.com/problemset/problem/520/D)|Codeforces||Codeforces Round #295 (Div. 2) & Codeforces Round #295 (Div. 1)|6|\n|<ul><li>- [ ] Done</li></ul>|818|[The Maths Lecture](http://codeforces.com/problemset/problem/507/D)|Codeforces||Codeforces Round #287 (Div. 2)|6|\n|<ul><li>- [ ] Done</li></ul>|819|[Up the hill](http://codeforces.com/problemset/problem/491/A)|Codeforces||Testing Round #11|6|\n|<ul><li>- [ ] Done</li></ul>|820|[Restoring Increasing Sequence](http://codeforces.com/problemset/problem/490/E)|Codeforces||Codeforces Round #279 (Div. 2)|6|\n|<ul><li>- [ ] Done</li></ul>|821|[Appleman and a Sheet of Paper](http://codeforces.com/problemset/problem/461/C)|Codeforces||Codeforces Round #263 (Div. 1) & Codeforces Round #263 (Div. 2)|6|\n|<ul><li>- [ ] Done</li></ul>|822|[Washer, Dryer, Folder](http://codeforces.com/problemset/problem/452/D)|Codeforces||MemSQL Start[c]UP 2.0 - Round 1|6|\n|<ul><li>- [ ] Done</li></ul>|823|[Divisors](http://codeforces.com/problemset/problem/448/E)|Codeforces||Codeforces Round #256 (Div. 2)|6|\n|<ul><li>- [ ] Done</li></ul>|824|[Police Patrol](http://codeforces.com/problemset/problem/427/E)|Codeforces||Codeforces Round #244 (Div. 2)|6|\n|<ul><li>- [ ] Done</li></ul>|825|[Crash](http://codeforces.com/problemset/problem/417/B)|Codeforces||RCC 2014 Warmup (Div. 2)|6|\n|<ul><li>- [ ] Done</li></ul>|826|[Spyke Chatting](http://codeforces.com/problemset/problem/413/B)|Codeforces||Coder-Strike 2014 - Round 2|6|\n|<ul><li>- [ ] Done</li></ul>|827|[Multi-core Processor](http://codeforces.com/problemset/problem/411/B)|Codeforces||Coder-Strike 2014 - Qualification Round|6|\n|<ul><li>- [ ] Done</li></ul>|828|[Minesweeper 1D](http://codeforces.com/problemset/problem/404/D)|Codeforces||Codeforces Round #237 (Div. 2)|6|\n|<ul><li>- [ ] Done</li></ul>|829|[Fly, freebies, fly!](http://codeforces.com/problemset/problem/386/B)|Codeforces||Testing Round #9|6|\n|<ul><li>- [ ] Done</li></ul>|830|[Insertion Sort](http://codeforces.com/problemset/problem/362/C)|Codeforces||Codeforces Round #212 (Div. 2)|6|\n|<ul><li>- [ ] Done</li></ul>|831|[Dima and Containers](http://codeforces.com/problemset/problem/358/C)|Codeforces||Codeforces Round #208 (Div. 2)|6|\n|<ul><li>- [ ] Done</li></ul>|832|[Compartments](http://codeforces.com/problemset/problem/356/C)|Codeforces||Codeforces Round #207 (Div. 1) & Codeforces Round #207 (Div. 2)|6|\n|<ul><li>- [ ] Done</li></ul>|833|[Characteristics of Rectangles](http://codeforces.com/problemset/problem/333/D)|Codeforces||Codeforces Round #194 (Div. 1)|6|\n|<ul><li>- [ ] Done</li></ul>|834|[Oh Sweet Beaverette](http://codeforces.com/problemset/problem/331/A1)|Codeforces||ABBYY Cup 3.0 - Finals (online version)|6|\n|<ul><li>- [ ] Done</li></ul>|835|[Ants](http://codeforces.com/problemset/problem/317/B)|Codeforces||Codeforces Round #188 (Div. 1) & Codeforces Round #188 (Div. 2)|6|\n|<ul><li>- [ ] Done</li></ul>|836|[Candies](http://codeforces.com/problemset/problem/306/A)|Codeforces||Testing Round #6|6|\n|<ul><li>- [ ] Done</li></ul>|837|[Rectangle Puzzle II](http://codeforces.com/problemset/problem/303/B)|Codeforces||Codeforces Round #183 (Div. 1) & Codeforces Round #183 (Div. 2)|6|\n|<ul><li>- [ ] Done</li></ul>|838|[WTF?](http://codeforces.com/problemset/problem/290/C)|Codeforces||April Fools Day Contest 2013|6|\n|<ul><li>- [ ] Done</li></ul>|839|[Main Sequence](http://codeforces.com/problemset/problem/286/C)|Codeforces||Codeforces Round #176 (Div. 1) & Codeforces Round #176 (Div. 2)|6|\n|<ul><li>- [ ] Done</li></ul>|840|[Permutation Sum](http://codeforces.com/problemset/problem/285/D)|Codeforces||Codeforces Round #175 (Div. 2)|6|\n|<ul><li>- [ ] Done</li></ul>|841|[Game on Tree](http://codeforces.com/problemset/problem/280/C)|Codeforces||Codeforces Round #172 (Div. 1) & Codeforces Round #172 (Div. 2)|6|\n|<ul><li>- [ ] Done</li></ul>|842|[Sum of Medians](http://codeforces.com/problemset/problem/85/D)|Codeforces||Yandex.Algorithm 2011 Round 1|6|\n|<ul><li>- [ ] Done</li></ul>|843|[Polygon](p?ID=258)|A2 Online Judge|||6|\n|<ul><li>- [ ] Done</li></ul>|844|[Mister B and PR Shifts](http://codeforces.com/problemset/problem/819/B)|Codeforces||Codeforces Round #421 (Div. 1) & Codeforces Round #421 (Div. 2)|6|\n|<ul><li>- [ ] Done</li></ul>|845|[Rooter's Song](http://codeforces.com/problemset/problem/848/B)|Codeforces||Codeforces Round #431 (Div. 1) & Codeforces Round #431 (Div. 2)|6|\n|<ul><li>- [ ] Done</li></ul>|846|[Chris and Road](http://codeforces.com/problemset/problem/703/C)|Codeforces||Codeforces Round #365 (Div. 2)|6|\n|<ul><li>- [ ] Done</li></ul>|847|[Mike and Geometry Problem](http://codeforces.com/problemset/problem/689/E)|Codeforces||Codeforces Round #361 (Div. 2)|6|\n|<ul><li>- [ ] Done</li></ul>|848|[Furlo and Rublo and Game](http://codeforces.com/problemset/problem/255/E)|Codeforces||Codeforces Round #156 (Div. 2) & Codeforces Round #156 (Div. 1)|7|\n|<ul><li>- [ ] Done</li></ul>|849|[Log Stream Analysis](http://codeforces.com/problemset/problem/245/F)|Codeforces||CROC-MBTU 2012, Elimination Round (ACM-ICPC)|7|\n|<ul><li>- [ ] Done</li></ul>|850|[Champions' League](http://codeforces.com/problemset/problem/234/E)|Codeforces||Codeforces Round #145 (Div. 2, ACM-ICPC Rules)|7|\n|<ul><li>- [ ] Done</li></ul>|851|[Snake](http://codeforces.com/problemset/problem/225/D)|Codeforces||Codeforces Round #139 (Div. 2)|7|\n|<ul><li>- [ ] Done</li></ul>|852|[Programming Language](http://codeforces.com/problemset/problem/200/D)|Codeforces||Codeforces Round #126 (Div. 2)|7|\n|<ul><li>- [ ] Done</li></ul>|853|[Football Championship](http://codeforces.com/problemset/problem/200/C)|Codeforces||Codeforces Round #126 (Div. 2)|7|\n|<ul><li>- [ ] Done</li></ul>|854|[Try and Catch](http://codeforces.com/problemset/problem/195/C)|Codeforces||Codeforces Round #123 (Div. 2)|7|\n|<ul><li>- [ ] Done</li></ul>|855|[Geometry Horse](http://codeforces.com/problemset/problem/175/C)|Codeforces||Codeforces Round #115|7|\n|<ul><li>- [ ] Done</li></ul>|856|[Pentagonal numbers](http://codeforces.com/problemset/problem/162/A)|Codeforces||VK Cup 2012 Wild-card Round 1|7|\n|<ul><li>- [ ] Done</li></ul>|857|[Last Chance](http://codeforces.com/problemset/problem/137/E)|Codeforces||Codeforces Beta Round #98 (Div. 2)|7|\n|<ul><li>- [ ] Done</li></ul>|858|[Hexagonal numbers](http://codeforces.com/problemset/problem/130/A)|Codeforces||Unknown Language Round #4|7|\n|<ul><li>- [ ] Done</li></ul>|859|[Boom](http://codeforces.com/problemset/problem/120/G)|Codeforces||School Regional Team Contest, Saratov, 2011|7|\n|<ul><li>- [ ] Done</li></ul>|860|[Before Exam](http://codeforces.com/problemset/problem/119/B)|Codeforces||Codeforces Beta Round #90|7|\n|<ul><li>- [ ] Done</li></ul>|861|[Treasure Island](http://codeforces.com/problemset/problem/106/D)|Codeforces||Codeforces Beta Round #82 (Div. 2)|7|\n|<ul><li>- [ ] Done</li></ul>|862|[Help Victoria the Wise](http://codeforces.com/problemset/problem/98/A)|Codeforces||Codeforces Beta Round #78 (Div. 1 Only) & Codeforces Beta Round #78 (Div. 2 Only)|7|\n|<ul><li>- [ ] Done</li></ul>|863|[Vasya and Types](http://codeforces.com/problemset/problem/87/B)|Codeforces||Codeforces Beta Round #73 (Div. 1 Only) & Codeforces Beta Round #73 (Div. 2 Only)|7|\n|<ul><li>- [ ] Done</li></ul>|864|[Biathlon](http://codeforces.com/problemset/problem/84/C)|Codeforces||Codeforces Beta Round #72 (Div. 2 Only)|7|\n|<ul><li>- [ ] Done</li></ul>|865|[Big Maximum Sum](http://codeforces.com/problemset/problem/75/D)|Codeforces||Codeforces Beta Round #67 (Div. 2)|7|\n|<ul><li>- [ ] Done</li></ul>|866|[Petya and File System](http://codeforces.com/problemset/problem/66/C)|Codeforces||Codeforces Beta Round #61 (Div. 2)|7|\n|<ul><li>- [ ] Done</li></ul>|867|[Martian Architecture](http://codeforces.com/problemset/problem/57/B)|Codeforces||Codeforces Beta Round #53|7|\n|<ul><li>- [ ] Done</li></ul>|868|[Corporation Mail](http://codeforces.com/problemset/problem/56/C)|Codeforces||Codeforces Beta Round #52 (Div. 2)|7|\n|<ul><li>- [ ] Done</li></ul>|869|[Blog Photo](http://codeforces.com/problemset/problem/53/B)|Codeforces||Codeforces Beta Round #49 (Div. 2)|7|\n|<ul><li>- [ ] Done</li></ul>|870|[Game](http://codeforces.com/problemset/problem/49/D)|Codeforces||Codeforces Beta Round #46 (Div. 2)|7|\n|<ul><li>- [ ] Done</li></ul>|871|[Parking Lot](http://codeforces.com/problemset/problem/46/D)|Codeforces||School Personal Contest #2 (Winter Computer School 2010/11) - Codeforces Beta Round #43 (ACM-ICPC Rules)|7|\n|<ul><li>- [ ] Done</li></ul>|872|[Journey](http://codeforces.com/problemset/problem/43/D)|Codeforces||Codeforces Beta Round #42 (Div. 2)|7|\n|<ul><li>- [ ] Done</li></ul>|873|[Game of chess unfinished](http://codeforces.com/problemset/problem/42/B)|Codeforces||Codeforces Beta Round #41|7|\n|<ul><li>- [ ] Done</li></ul>|874|[Pacifist frogs](http://codeforces.com/problemset/problem/39/F)|Codeforces||School Team Contest #1 (Winter Computer School 2010/11)|7|\n|<ul><li>- [ ] Done</li></ul>|875|[Computer Game](http://codeforces.com/problemset/problem/37/B)|Codeforces||Codeforces Beta Round #37|7|\n|<ul><li>- [ ] Done</li></ul>|876|[Fractal](http://codeforces.com/problemset/problem/36/B)|Codeforces||Codeforces Beta Round #36|7|\n|<ul><li>- [ ] Done</li></ul>|877|[Warehouse](http://codeforces.com/problemset/problem/35/B)|Codeforces||Codeforces Beta Round #35 (Div. 2)|7|\n|<ul><li>- [ ] Done</li></ul>|878|[Constellation](http://codeforces.com/problemset/problem/32/D)|Codeforces||Codeforces Beta Round #32 (Div. 2, Codeforces format)|7|\n|<ul><li>- [ ] Done</li></ul>|879|[Chocolate](http://codeforces.com/problemset/problem/31/D)|Codeforces||Codeforces Beta Round #31 (Div. 2, Codeforces format)|7|\n|<ul><li>- [ ] Done</li></ul>|880|[Codeforces World Finals](http://codeforces.com/problemset/problem/30/B)|Codeforces||Codeforces Beta Round #30 (Codeforces format)|7|\n|<ul><li>- [ ] Done</li></ul>|881|[Bender Problem](http://codeforces.com/problemset/problem/28/A)|Codeforces||Codeforces Beta Round #28 (Codeforces format)|7|\n|<ul><li>- [ ] Done</li></ul>|882|[Sequence of points](http://codeforces.com/problemset/problem/24/C)|Codeforces||Codeforces Beta Round #24|7|\n|<ul><li>- [ ] Done</li></ul>|883|[Intersection](http://codeforces.com/problemset/problem/21/B)|Codeforces||Codeforces Alpha Round #21 (Codeforces format)|7|\n|<ul><li>- [ ] Done</li></ul>|884|[Jabber ID](http://codeforces.com/problemset/problem/21/A)|Codeforces||Codeforces Alpha Round #21 (Codeforces format)|7|\n|<ul><li>- [ ] Done</li></ul>|885|[Logging](http://codeforces.com/problemset/problem/16/D)|Codeforces||Codeforces Beta Round #16 (Div. 2 Only)|7|\n|<ul><li>- [ ] Done</li></ul>|886|[Follow Traffic Rules](http://codeforces.com/problemset/problem/5/D)|Codeforces||Codeforces Beta Round #5|7|\n|<ul><li>- [ ] Done</li></ul>|887|[ucyhf](http://codeforces.com/problemset/problem/171/F)|Codeforces||April Fools Day Contest|7|\n|<ul><li>- [ ] Done</li></ul>|888|[THE N WITTY FRIENDS](http://www.spoj.com/problems/WITTY/)|SPOJ|||7|\n|<ul><li>- [ ] Done</li></ul>|889|[Little Artem and Random Variable](http://codeforces.com/problemset/problem/641/D)|Codeforces||VK Cup 2016 - Round 2|7|\n|<ul><li>- [ ] Done</li></ul>|890|[Sum of Remainders](http://codeforces.com/problemset/problem/616/E)|Codeforces||Educational Codeforces Round 5|7|\n|<ul><li>- [ ] Done</li></ul>|891|[Hexagons](http://codeforces.com/problemset/problem/615/E)|Codeforces||Codeforces Round #338 (Div. 2)|7|\n|<ul><li>- [ ] Done</li></ul>|892|[Guess Your Way Out! II](http://codeforces.com/problemset/problem/558/D)|Codeforces||Codeforces Round #312 (Div. 2)|7|\n|<ul><li>- [ ] Done</li></ul>|893|[Case of a Top Secret](http://codeforces.com/problemset/problem/555/D)|Codeforces||Codeforces Round #310 (Div. 1)|7|\n|<ul><li>- [ ] Done</li></ul>|894|[Transmitting Levels](http://codeforces.com/problemset/problem/526/E)|Codeforces||ZeptoLab Code Rush 2015|7|\n|<ul><li>- [ ] Done</li></ul>|895|[Mean Requests](http://codeforces.com/problemset/problem/523/B)|Codeforces||VK Cup 2015 - Qualification Round 2|7|\n|<ul><li>- [ ] Done</li></ul>|896|[Arthur and Questions](http://codeforces.com/problemset/problem/518/E)|Codeforces||Codeforces Round #293 (Div. 2)|7|\n|<ul><li>- [ ] Done</li></ul>|897|[Valera and Swaps](http://codeforces.com/problemset/problem/441/D)|Codeforces||Codeforces Round #252 (Div. 2)|7|\n|<ul><li>- [ ] Done</li></ul>|898|[Nanami's Digital Board](http://codeforces.com/problemset/problem/433/D)|Codeforces||Codeforces Round #248 (Div. 2) & Codeforces Round #248 (Div. 1)|7|\n|<ul><li>- [ ] Done</li></ul>|899|[Bug in Code](http://codeforces.com/problemset/problem/420/C)|Codeforces||Coder-Strike 2014 - Finals (online edition, Div. 2) & Coder-Strike 2014 - Finals (online edition, Div. 1) & Coder-Strike 2014 - Finals (online edition, Div. 2) & Coder-Strike 2014 - Finals (online edition, Div. 1)|7|\n|<ul><li>- [ ] Done</li></ul>|900|[Online Meeting](http://codeforces.com/problemset/problem/420/B)|Codeforces||Coder-Strike 2014 - Finals (online edition, Div. 1) & Coder-Strike 2014 - Finals (online edition, Div. 2)|7|\n|<ul><li>- [ ] Done</li></ul>|901|[Population Size](http://codeforces.com/problemset/problem/416/D)|Codeforces||Codeforces Round #241 (Div. 2)|7|\n|<ul><li>- [ ] Done</li></ul>|902|[E-mail Addresses](http://codeforces.com/problemset/problem/412/E)|Codeforces||Coder-Strike 2014 - Round 1|7|\n|<ul><li>- [ ] Done</li></ul>|903|[Kicker](http://codeforces.com/problemset/problem/411/C)|Codeforces||Coder-Strike 2014 - Qualification Round|7|\n|<ul><li>- [ ] Done</li></ul>|904|[Curious Array](http://codeforces.com/problemset/problem/407/C)|Codeforces||Codeforces Round #239 (Div. 1) & Codeforces Round #239 (Div. 2)|7|\n|<ul><li>- [ ] Done</li></ul>|905|[Cards](http://codeforces.com/problemset/problem/398/A)|Codeforces||Codeforces Round #233 (Div. 1) & Codeforces Round #233 (Div. 2)|7|\n|<ul><li>- [ ] Done</li></ul>|906|[On Corruption and Numbers](http://codeforces.com/problemset/problem/397/B)|Codeforces||Codeforces Round #232 (Div. 2)|7|\n|<ul><li>- [ ] Done</li></ul>|907|[Genetic Engineering](http://codeforces.com/problemset/problem/391/A)|Codeforces||Rockethon 2014|7|\n|<ul><li>- [ ] Done</li></ul>|908|[Inna, Dima and Song](http://codeforces.com/problemset/problem/390/B)|Codeforces||Codeforces Round #229 (Div. 2)|7|\n|<ul><li>- [ ] Done</li></ul>|909|[Ksenia and Pawns](http://codeforces.com/problemset/problem/382/D)|Codeforces||Codeforces Round #224 (Div. 2)|7|\n|<ul><li>- [ ] Done</li></ul>|910|[Shave Beaver!](http://codeforces.com/problemset/problem/331/B1)|Codeforces||ABBYY Cup 3.0 - Finals (online version)|7|\n|<ul><li>- [ ] Done</li></ul>|911|[IQ Test](http://codeforces.com/problemset/problem/328/A)|Codeforces||Testing Round #8|7|\n|<ul><li>- [ ] Done</li></ul>|912|[Shifting](http://codeforces.com/problemset/problem/286/B)|Codeforces||Codeforces Round #176 (Div. 1) & Codeforces Round #176 (Div. 2)|7|\n|<ul><li>- [ ] Done</li></ul>|913|[Circle of Numbers](http://codeforces.com/problemset/problem/263/C)|Codeforces||Codeforces Round #161 (Div. 2)|7|\n|<ul><li>- [ ] Done</li></ul>|914|[Bear and Square Grid](http://codeforces.com/problemset/problem/679/C)|Codeforces||Codeforces Round #356 (Div. 1) & Codeforces Round #356 (Div. 2)|7|\n|<ul><li>- [ ] Done</li></ul>|915|[Crunching Numbers Just for You](http://codeforces.com/problemset/problem/784/F)|Codeforces||April Fools Contest 2017|7|\n|<ul><li>- [ ] Done</li></ul>|916|[HTML](http://acm.timus.ru/problem.aspx?space=1&num=1345)|Timus|||7|\n|<ul><li>- [ ] Done</li></ul>|917|[Blog](http://acm.timus.ru/problem.aspx?space=1&num=1347)|Timus|||7|\n|<ul><li>- [ ] Done</li></ul>|918|[Teams Formation](http://codeforces.com/problemset/problem/878/B)|Codeforces||Codeforces Round #443 (Div. 1) & Codeforces Round #443 (Div. 2)|7|\n|<ul><li>- [ ] Done</li></ul>|919|[Vladik and chat](http://codeforces.com/problemset/problem/754/C)|Codeforces||Codeforces Round #390 (Div. 2)|7|\n|<ul><li>- [ ] Done</li></ul>|920|[Working routine](http://codeforces.com/problemset/problem/706/E)|Codeforces||Codeforces Round #367 (Div. 2)|7|\n|<ul><li>- [ ] Done</li></ul>|921|[Printer](http://codeforces.com/problemset/problem/253/E)|Codeforces||Codeforces Round #154 (Div. 2)|8|\n|<ul><li>- [ ] Done</li></ul>|922|[Mad Joe](http://codeforces.com/problemset/problem/250/E)|Codeforces||CROC-MBTU 2012, Final Round (Online version, Div. 2)|8|\n|<ul><li>- [ ] Done</li></ul>|923|[Sweets for Everyone!](http://codeforces.com/problemset/problem/248/D)|Codeforces||Codeforces Round #152 (Div. 2) & Codeforces Round #152 (Div. 1)|8|\n|<ul><li>- [ ] Done</li></ul>|924|[Colorado Potato Beetle](http://codeforces.com/problemset/problem/243/C)|Codeforces||Codeforces Round #150 (Div. 1) & Codeforces Round #150 (Div. 2)|8|\n|<ul><li>- [ ] Done</li></ul>|925|[Mirror Box](http://codeforces.com/problemset/problem/241/C)|Codeforces||Bayan 2012-2013 Elimination Round (ACM ICPC Rules, English statements)|8|\n|<ul><li>- [ ] Done</li></ul>|926|[Number Challenge](http://codeforces.com/problemset/problem/235/E)|Codeforces||Codeforces Round #146 (Div. 1)|8|\n|<ul><li>- [ ] Done</li></ul>|927|[Anniversary](http://codeforces.com/problemset/problem/226/C)|Codeforces||Codeforces Round #140 (Div. 1) & Codeforces Round #140 (Div. 2)|8|\n|<ul><li>- [ ] Done</li></ul>|928|[Crosses](http://codeforces.com/problemset/problem/215/C)|Codeforces||Codeforces Round #132 (Div. 2)|8|\n|<ul><li>- [ ] Done</li></ul>|929|[Little Elephant and Strings](http://codeforces.com/problemset/problem/204/E)|Codeforces||Codeforces Round #129 (Div. 1)|8|\n|<ul><li>- [ ] Done</li></ul>|930|[Hexagonal Numbers](http://codeforces.com/problemset/problem/188/A)|Codeforces||Surprise Language Round #6|8|\n|<ul><li>- [ ] Done</li></ul>|931|[Defragmentation](http://codeforces.com/problemset/problem/180/A)|Codeforces||Codeforces Round #116 (Div. 2, ACM-ICPC Rules)|8|\n|<ul><li>- [ ] Done</li></ul>|932|[A Piece of Cake](http://codeforces.com/problemset/problem/171/C)|Codeforces||April Fools Day Contest|8|\n|<ul><li>- [ ] Done</li></ul>|933|[Piet](http://codeforces.com/problemset/problem/132/B)|Codeforces||Codeforces Beta Round #96 (Div. 1) & Codeforces Beta Round #96 (Div. 2)|8|\n|<ul><li>- [ ] Done</li></ul>|934|[Gnikool Ssalg](http://codeforces.com/problemset/problem/130/B)|Codeforces||Unknown Language Round #4|8|\n|<ul><li>- [ ] Done</li></ul>|935|[Vectors](http://codeforces.com/problemset/problem/101/C)|Codeforces||Codeforces Beta Round #79 (Div. 1 Only) & Codeforces Beta Round #79 (Div. 2 Only)|8|\n|<ul><li>- [ ] Done</li></ul>|936|[Chip Play](http://codeforces.com/problemset/problem/89/C)|Codeforces||Codeforces Beta Round #74 (Div. 1 Only) & Codeforces Beta Round #74 (Div. 2 Only)|8|\n|<ul><li>- [ ] Done</li></ul>|937|[Widget Library](http://codeforces.com/problemset/problem/89/B)|Codeforces||Codeforces Beta Round #74 (Div. 1 Only) & Codeforces Beta Round #74 (Div. 2 Only)|8|\n|<ul><li>- [ ] Done</li></ul>|938|[Beautiful Road](http://codeforces.com/problemset/problem/87/D)|Codeforces||Codeforces Beta Round #73 (Div. 1 Only)|8|\n|<ul><li>- [ ] Done</li></ul>|939|[Game](http://codeforces.com/problemset/problem/69/C)|Codeforces||Codeforces Beta Round #63 (Div. 2)|8|\n|<ul><li>- [ ] Done</li></ul>|940|[Factorial](http://codeforces.com/problemset/problem/64/A)|Codeforces||Unknown Language Round #1|8|\n|<ul><li>- [ ] Done</li></ul>|941|[Sweets Game](http://codeforces.com/problemset/problem/63/E)|Codeforces||Codeforces Beta Round #59 (Div. 2)|8|\n|<ul><li>- [ ] Done</li></ul>|942|[Team Arrangement](http://codeforces.com/problemset/problem/59/D)|Codeforces||Codeforces Beta Round #55 (Div. 2)|8|\n|<ul><li>- [ ] Done</li></ul>|943|[Cutting Jigsaw Puzzle](http://codeforces.com/problemset/problem/54/B)|Codeforces||Codeforces Beta Round #50|8|\n|<ul><li>- [ ] Done</li></ul>|944|[Crossword](http://codeforces.com/problemset/problem/47/C)|Codeforces||Codeforces Beta Round #44 (Div. 2)|8|\n|<ul><li>- [ ] Done</li></ul>|945|[Vasya the Architect](http://codeforces.com/problemset/problem/38/D)|Codeforces||School Personal Contest #1 (Winter Computer School 2010/11) - Codeforces Beta Round #38 (ACM-ICPC Rules)|8|\n|<ul><li>- [ ] Done</li></ul>|946|[Collisions](http://codeforces.com/problemset/problem/34/E)|Codeforces||Codeforces Beta Round #34 (Div. 2)|8|\n|<ul><li>- [ ] Done</li></ul>|947|[How Many Squares?](http://codeforces.com/problemset/problem/11/C)|Codeforces||Codeforces Beta Round #11|8|\n|<ul><li>- [ ] Done</li></ul>|948|[Defining Macros](http://codeforces.com/problemset/problem/7/E)|Codeforces||Codeforces Beta Round #7|8|\n|<ul><li>- [ ] Done</li></ul>|949|[Zbazi in Zeydabad](http://codeforces.com/problemset/problem/628/E)|Codeforces||Educational Codeforces Round 8|8|\n|<ul><li>- [ ] Done</li></ul>|950|[Finals in arithmetic](http://codeforces.com/problemset/problem/625/D)|Codeforces||Codeforces Round #342 (Div. 2)|8|\n|<ul><li>- [ ] Done</li></ul>|951|[New Year and Cleaning](http://codeforces.com/problemset/problem/611/F)|Codeforces||Good Bye 2015|8|\n|<ul><li>- [ ] Done</li></ul>|952|[Misha and Palindrome Degree](http://codeforces.com/problemset/problem/501/E)|Codeforces||Codeforces Round #285 (Div. 2) & Codeforces Round #285 (Div. 1)|8|\n|<ul><li>- [ ] Done</li></ul>|953|[Strange Sorting](http://codeforces.com/problemset/problem/484/C)|Codeforces||Codeforces Round #276 (Div. 1) & Codeforces Round #276 (Div. 2)|8|\n|<ul><li>- [ ] Done</li></ul>|954|[Crystal Ball Sequence](http://codeforces.com/problemset/problem/470/A)|Codeforces||Surprise Language Round #7|8|\n|<ul><li>- [ ] Done</li></ul>|955|[Maze 1D](http://codeforces.com/problemset/problem/404/E)|Codeforces||Codeforces Round #237 (Div. 2)|8|\n|<ul><li>- [ ] Done</li></ul>|956|[Volcanoes](http://codeforces.com/problemset/problem/383/B)|Codeforces||Codeforces Round #225 (Div. 1) & Codeforces Round #225 (Div. 2)|8|\n|<ul><li>- [ ] Done</li></ul>|957|[Sereja and Tree](http://codeforces.com/problemset/problem/380/B)|Codeforces||Codeforces Round #223 (Div. 1) & Codeforces Round #223 (Div. 2)|8|\n|<ul><li>- [ ] Done</li></ul>|958|[Broken Monitor](http://codeforces.com/problemset/problem/370/D)|Codeforces||Codeforces Round #217 (Div. 2)|8|\n|<ul><li>- [ ] Done</li></ul>|959|[Dima and Magic Guitar](http://codeforces.com/problemset/problem/366/E)|Codeforces||Codeforces Round #214 (Div. 2)|8|\n|<ul><li>- [ ] Done</li></ul>|960|[Game](http://codeforces.com/problemset/problem/277/C)|Codeforces||Codeforces Round #170 (Div. 1) & Codeforces Round #170 (Div. 2)|8|\n|<ul><li>- [ ] Done</li></ul>|961|[Letter A](http://codeforces.com/problemset/problem/13/B)|Codeforces||Codeforces Beta Round #13|8|\n|<ul><li>- [ ] Done</li></ul>|962|[Vanya and Balloons](http://codeforces.com/problemset/problem/677/E)|Codeforces||Codeforces Round #355 (Div. 2)|8|\n|<ul><li>- [ ] Done</li></ul>|963|[Dance Revolution](http://acm.timus.ru/problem.aspx?space=1&num=1543)|Timus|||8|\n|<ul><li>- [ ] Done</li></ul>|964|[Dormitory](http://codeforces.com/problemset/problem/254/E)|Codeforces||Codeforces Round #155 (Div. 2)|9|\n|<ul><li>- [ ] Done</li></ul>|965|[Rats](http://codeforces.com/problemset/problem/254/D)|Codeforces||Codeforces Round #155 (Div. 2)|9|\n|<ul><li>- [ ] Done</li></ul>|966|[Race](http://codeforces.com/problemset/problem/241/F)|Codeforces||Bayan 2012-2013 Elimination Round (ACM ICPC Rules, English statements)|9|\n|<ul><li>- [ ] Done</li></ul>|967|[Polycarpus is Looking for Good Substrings](http://codeforces.com/problemset/problem/212/B)|Codeforces||VK Cup 2012 Finals (unofficial online-version)|9|\n|<ul><li>- [ ] Done</li></ul>|968|[Tractor College](http://codeforces.com/problemset/problem/200/E)|Codeforces||Codeforces Round #126 (Div. 2)|9|\n|<ul><li>- [ ] Done</li></ul>|969|[Array Sorting](http://codeforces.com/problemset/problem/188/G)|Codeforces||Surprise Language Round #6|9|\n|<ul><li>- [ ] Done</li></ul>|970|[Binary Notation](http://codeforces.com/problemset/problem/188/F)|Codeforces||Surprise Language Round #6|9|\n|<ul><li>- [ ] Done</li></ul>|971|[HQ9+](http://codeforces.com/problemset/problem/188/E)|Codeforces||Surprise Language Round #6|9|\n|<ul><li>- [ ] Done</li></ul>|972|[Asterisks](http://codeforces.com/problemset/problem/188/D)|Codeforces||Surprise Language Round #6|9|\n|<ul><li>- [ ] Done</li></ul>|973|[LCM](http://codeforces.com/problemset/problem/188/C)|Codeforces||Surprise Language Round #6|9|\n|<ul><li>- [ ] Done</li></ul>|974|[A + Reverse B](http://codeforces.com/problemset/problem/188/B)|Codeforces||Surprise Language Round #6|9|\n|<ul><li>- [ ] Done</li></ul>|975|[Battlefield](http://codeforces.com/problemset/problem/182/A)|Codeforces||Codeforces Round #117 (Div. 2)|9|\n|<ul><li>- [ ] Done</li></ul>|976|[Deputies](http://codeforces.com/problemset/problem/173/D)|Codeforces||Croc Champ 2012 - Round 1|9|\n|<ul><li>- [ ] Done</li></ul>|977|[Lucky Pair](http://codeforces.com/problemset/problem/145/D)|Codeforces||Codeforces Round #104 (Div. 1)|9|\n|<ul><li>- [ ] Done</li></ul>|978|[Cycle](http://codeforces.com/problemset/problem/135/D)|Codeforces||Codeforces Beta Round #97 (Div. 1)|9|\n|<ul><li>- [ ] Done</li></ul>|979|[Lucky Segments](http://codeforces.com/problemset/problem/121/D)|Codeforces||Codeforces Beta Round #91 (Div. 1 Only)|9|\n|<ul><li>- [ ] Done</li></ul>|980|[Item World](http://codeforces.com/problemset/problem/105/C)|Codeforces||Codeforces Beta Round #81|9|\n|<ul><li>- [ ] Done</li></ul>|981|[Candies and Stones](http://codeforces.com/problemset/problem/101/E)|Codeforces||Codeforces Beta Round #79 (Div. 1 Only)|9|\n|<ul><li>- [ ] Done</li></ul>|982|[A+B](http://codeforces.com/problemset/problem/100/C)|Codeforces||Unknown Language Round #3|9|\n|<ul><li>- [ ] Done</li></ul>|983|[Friendly Numbers](http://codeforces.com/problemset/problem/100/B)|Codeforces||Unknown Language Round #3|9|\n|<ul><li>- [ ] Done</li></ul>|984|[Carpeting the Room](http://codeforces.com/problemset/problem/100/A)|Codeforces||Unknown Language Round #3|9|\n|<ul><li>- [ ] Done</li></ul>|985|[Domino](http://codeforces.com/problemset/problem/97/A)|Codeforces||Yandex.Algorithm 2011 Finals|9|\n|<ul><li>- [ ] Done</li></ul>|986|[Azembler](http://codeforces.com/problemset/problem/93/C)|Codeforces||Codeforces Beta Round #76 (Div. 1 Only) & Codeforces Beta Round #76 (Div. 2 Only)|9|\n|<ul><li>- [ ] Done</li></ul>|987|[Domino Carpet](http://codeforces.com/problemset/problem/77/D)|Codeforces||Codeforces Beta Round #69 (Div. 1 Only)|9|\n|<ul><li>- [ ] Done</li></ul>|988|[Goofy Numbers](http://codeforces.com/problemset/problem/72/I)|Codeforces||Unknown Language Round #2|9|\n|<ul><li>- [ ] Done</li></ul>|989|[Reverse It!](http://codeforces.com/problemset/problem/72/H)|Codeforces||Unknown Language Round #2|9|\n|<ul><li>- [ ] Done</li></ul>|990|[Solitaire](http://codeforces.com/problemset/problem/71/D)|Codeforces||Codeforces Beta Round #65 (Div. 2)|9|\n|<ul><li>- [ ] Done</li></ul>|991|[Information Reform](http://codeforces.com/problemset/problem/70/E)|Codeforces||Codeforces Beta Round #64|9|\n|<ul><li>- [ ] Done</li></ul>|992|[Table](http://codeforces.com/problemset/problem/64/C)|Codeforces||Unknown Language Round #1|9|\n|<ul><li>- [ ] Done</li></ul>|993|[Inquisition](http://codeforces.com/problemset/problem/62/C)|Codeforces||Codeforces Beta Round #58|9|\n|<ul><li>- [ ] Done</li></ul>|994|[Geometrical problem](http://codeforces.com/problemset/problem/51/D)|Codeforces||Codeforces Beta Round #48|9|\n|<ul><li>- [ ] Done</li></ul>|995|[Race](http://codeforces.com/problemset/problem/43/E)|Codeforces||Codeforces Beta Round #42 (Div. 2)|9|\n|<ul><li>- [ ] Done</li></ul>|996|[Two Paths](http://codeforces.com/problemset/problem/36/E)|Codeforces||Codeforces Beta Round #36|9|\n|<ul><li>- [ ] Done</li></ul>|997|[Bowls](http://codeforces.com/problemset/problem/36/C)|Codeforces||Codeforces Beta Round #36|9|\n|<ul><li>- [ ] Done</li></ul>|998|[Hide-and-Seek](http://codeforces.com/problemset/problem/32/E)|Codeforces||Codeforces Beta Round #32 (Div. 2, Codeforces format)|9|\n|<ul><li>- [ ] Done</li></ul>|999|[Map](http://codeforces.com/problemset/problem/15/D)|Codeforces||Codeforces Beta Round #15|9|\n|<ul><li>- [ ] Done</li></ul>|1000|[O Problema do Sapateiro Viajante](http://br.spoj.com/problems/SAPATEIR/)|SPOJ Brazil|||9|\n|<ul><li>- [ ] Done</li></ul>|1001|[BLOCK_D SOLVER](http://www.spoj.com/problems/BLOCK_D/)|SPOJ|||9|\n|<ul><li>- [ ] Done</li></ul>|1002|[BF_MODULUS](http://www.spoj.com/problems/MODULUS2/)|SPOJ|||9|\n|<ul><li>- [ ] Done</li></ul>|1003|[Fibonacci-ish II](http://codeforces.com/problemset/problem/633/H)|Codeforces||Manthan, Codefest 16|9|\n|<ul><li>- [ ] Done</li></ul>|1004|[Berland Local Positioning System](http://codeforces.com/problemset/problem/534/E)|Codeforces||Codeforces Round #298 (Div. 2)|9|\n|<ul><li>- [ ] Done</li></ul>|1005|[Pasha and Pipe](http://codeforces.com/problemset/problem/518/F)|Codeforces||Codeforces Round #293 (Div. 2)|9|\n|<ul><li>- [ ] Done</li></ul>|1006|[Physical Education and Buns](http://codeforces.com/problemset/problem/394/D)|Codeforces||Codeforces Round #231 (Div. 2)|9|\n|<ul><li>- [ ] Done</li></ul>|1007|[Game with Points](http://codeforces.com/problemset/problem/386/D)|Codeforces||Testing Round #9|9|\n|<ul><li>- [ ] Done</li></ul>|1008|[Red and Black Tree](http://codeforces.com/problemset/problem/375/E)|Codeforces||Codeforces Round #221 (Div. 1)|9|\n|<ul><li>- [ ] Done</li></ul>|1009|[Dima and Kicks](http://codeforces.com/problemset/problem/358/E)|Codeforces||Codeforces Round #208 (Div. 2)|9|\n|<ul><li>- [ ] Done</li></ul>|1010|[Xenia and String Problem](http://codeforces.com/problemset/problem/356/E)|Codeforces||Codeforces Round #207 (Div. 1)|9|\n|<ul><li>- [ ] Done</li></ul>|1011|[Binary Key](http://codeforces.com/problemset/problem/332/E)|Codeforces||Codeforces Round #193 (Div. 2)|9|\n|<ul><li>- [ ] Done</li></ul>|1012|[Shaass and Painter Robot](http://codeforces.com/problemset/problem/294/D)|Codeforces||Codeforces Round #178 (Div. 2)|9|\n|<ul><li>- [ ] Done</li></ul>|1013|[Polo the Penguin and Lucky Numbers](http://codeforces.com/problemset/problem/288/E)|Codeforces||Codeforces Round #177 (Div. 1)|9|\n|<ul><li>- [ ] Done</li></ul>|1014|[Mirror Room](http://codeforces.com/problemset/problem/274/E)|Codeforces||Codeforces Round #168 (Div. 1)|9|\n|<ul><li>- [ ] Done</li></ul>|1015|[Greedy Elevator](http://codeforces.com/problemset/problem/257/E)|Codeforces||Codeforces Round #159 (Div. 2)|9|\n|<ul><li>- [ ] Done</li></ul>|1016|[Pairs](http://codeforces.com/problemset/problem/81/E)|Codeforces||Yandex.Algorithm Open 2011 Qualification 1|9|\n|<ul><li>- [ ] Done</li></ul>|1017|[Bear and Chase](http://codeforces.com/problemset/problem/679/D)|Codeforces||Codeforces Round #356 (Div. 1)|9|\n|<ul><li>- [ ] Done</li></ul>|1018|[Black Widow](http://codeforces.com/problemset/problem/704/C)|Codeforces||Codeforces Round #366 (Div. 1) & Codeforces Round #366 (Div. 2)|9|\n|<ul><li>- [ ] Done</li></ul>|1019|[Sagheer and Kindergarten](http://codeforces.com/problemset/problem/812/D)|Codeforces||Codeforces Round #417 (Div. 2)|9|\n|<ul><li>- [ ] Done</li></ul>|1020|[Strange Radiation](http://codeforces.com/problemset/problem/832/C)|Codeforces||Codeforces Round #425 (Div. 2)|9|\n|<ul><li>- [ ] Done</li></ul>|1021|[Tree and Table](http://codeforces.com/problemset/problem/251/E)|Codeforces||Codeforces Round #153 (Div. 1)|10|\n|<ul><li>- [ ] Done</li></ul>|1022|[Tape Programming](http://codeforces.com/problemset/problem/238/D)|Codeforces||Codeforces Round #148 (Div. 1)|10|\n|<ul><li>- [ ] Done</li></ul>|1023|[Stack](http://codeforces.com/problemset/problem/188/H)|Codeforces||Surprise Language Round #6|10|\n|<ul><li>- [ ] Done</li></ul>|1024|[Gnomes of Might and Magic](http://codeforces.com/problemset/problem/175/F)|Codeforces||Codeforces Round #115|10|\n|<ul><li>- [ ] Done</li></ul>|1025|[A polyline](http://codeforces.com/problemset/problem/171/H)|Codeforces||April Fools Day Contest|10|\n|<ul><li>- [ ] Done</li></ul>|1026|[Tree or not Tree](http://codeforces.com/problemset/problem/117/E)|Codeforces||Codeforces Beta Round #88|10|\n|<ul><li>- [ ] Done</li></ul>|1027|[Sleeping](http://codeforces.com/problemset/problem/113/E)|Codeforces||Codeforces Beta Round #86 (Div. 1 Only)|10|\n|<ul><li>- [ ] Done</li></ul>|1028|[Entertaining Geodetics](http://codeforces.com/problemset/problem/105/D)|Codeforces||Codeforces Beta Round #81|10|\n|<ul><li>- [ ] Done</li></ul>|1029|[Battleship](http://codeforces.com/problemset/problem/100/H)|Codeforces||Unknown Language Round #3|10|\n|<ul><li>- [ ] Done</li></ul>|1030|[Name the album](http://codeforces.com/problemset/problem/100/G)|Codeforces||Unknown Language Round #3|10|\n|<ul><li>- [ ] Done</li></ul>|1031|[Polynom](http://codeforces.com/problemset/problem/100/F)|Codeforces||Unknown Language Round #3|10|\n|<ul><li>- [ ] Done</li></ul>|1032|[Help King](http://codeforces.com/problemset/problem/98/B)|Codeforces||Codeforces Beta Round #78 (Div. 1 Only) & Codeforces Beta Round #78 (Div. 2 Only)|10|\n|<ul><li>- [ ] Done</li></ul>|1033|[Robot in Basement](http://codeforces.com/problemset/problem/97/D)|Codeforces||Yandex.Algorithm 2011 Finals|10|\n|<ul><li>- [ ] Done</li></ul>|1034|[INI-file](http://codeforces.com/problemset/problem/72/B)|Codeforces||Unknown Language Round #2|10|\n|<ul><li>- [ ] Done</li></ul>|1035|[Harry Potter and Moving Staircases](http://codeforces.com/problemset/problem/65/E)|Codeforces||Codeforces Beta Round #60|10|\n|<ul><li>- [ ] Done</li></ul>|1036|[Shooting Gallery](http://codeforces.com/problemset/problem/44/G)|Codeforces||School Team Contest #2 (Winter Computer School 2010/11)|10|\n|<ul><li>- [ ] Done</li></ul>|1037|[Inverse Function](http://codeforces.com/problemset/problem/39/G)|Codeforces||School Team Contest #1 (Winter Computer School 2010/11)|10|\n|<ul><li>- [ ] Done</li></ul>|1038|[ALIGNSUBTRACT](http://www.spoj.com/problems/PROBLEM5/)|SPOJ|||10|\n|<ul><li>- [ ] Done</li></ul>|1039|[Digits of Number Pi](http://codeforces.com/problemset/problem/585/F)|Codeforces||Codeforces Round #325 (Div. 1)|10|\n|<ul><li>- [ ] Done</li></ul>|1040|[Design Tutorial: Learn from a Game](http://codeforces.com/problemset/problem/472/E)|Codeforces||Codeforces Round #270|10|\n|<ul><li>- [ ] Done</li></ul>|1041|[Hamming Triples](http://codeforces.com/problemset/problem/406/E)|Codeforces||Codeforces Round #238 (Div. 1)|10|\n|<ul><li>- [ ] Done</li></ul>|1042|[Two Rooted Trees](http://codeforces.com/problemset/problem/403/E)|Codeforces||Codeforces Round #236 (Div. 1)|10|\n|<ul><li>- [ ] Done</li></ul>|1043|[Inna and Babies](http://codeforces.com/problemset/problem/374/E)|Codeforces||Codeforces Round #220 (Div. 2)|10|\n|<ul><li>- [ ] Done</li></ul>|1044|[Two Circles](http://codeforces.com/problemset/problem/363/E)|Codeforces||Codeforces Round #211 (Div. 2)|10|\n|<ul><li>- [ ] Done</li></ul>|1045|[Vasily the Bear and Painting Square](http://codeforces.com/problemset/problem/336/E)|Codeforces||Codeforces Round #195 (Div. 2)|10|\n|<ul><li>- [ ] Done</li></ul>|1046|[Deja Vu](http://codeforces.com/problemset/problem/331/E1)|Codeforces||ABBYY Cup 3.0 - Finals (online version)|10|\n|<ul><li>- [ ] Done</li></ul>|1047|[Escaping on Beaveractor](http://codeforces.com/problemset/problem/331/D3)|Codeforces||ABBYY Cup 3.0 - Finals (online version)|10|\n|<ul><li>- [ ] Done</li></ul>|1048|[Escaping on Beaveractor](http://codeforces.com/problemset/problem/331/D1)|Codeforces||ABBYY Cup 3.0 - Finals (online version)|10|\n|<ul><li>- [ ] Done</li></ul>|1049|[Suns and Rays](http://codeforces.com/problemset/problem/316/F3)|Codeforces||ABBYY Cup 3.0|10|\n|<ul><li>- [ ] Done</li></ul>|1050|[Suns and Rays](http://codeforces.com/problemset/problem/316/F1)|Codeforces||ABBYY Cup 3.0|10|\n|<ul><li>- [ ] Done</li></ul>|1051|[Sequence Transformation](http://codeforces.com/problemset/problem/280/E)|Codeforces||Codeforces Round #172 (Div. 1)|10|\n|<ul><li>- [ ] Done</li></ul>|1052|[A Kleene Implementation](http://www.spoj.com/problems/BFREGEX1/)|SPOJ|||10|\n|<ul><li>- [ ] Done</li></ul>|1053|[Red-Black Cobweb](http://codeforces.com/problemset/problem/833/D)|Codeforces||Codeforces Round #426 (Div. 1)|10|\n|<ul><li>- [ ] Done</li></ul>|1054|[Perpetual Motion Machine](http://codeforces.com/problemset/problem/830/E)|Codeforces||Codeforces Round #424 (Div. 1, rated, based on VK Cup Finals)|10|\n"
  },
  {
    "path": "categories/003. math/README.md",
    "content": "# 003. math\n\n\n| Checkbox | ID | Problem Name|Online Judge|Year|Contest|Difficulty Level|\n|:---:|:---:|:---:|:---:|:---:|:---:|:---:|\n|<ul><li>- [ ] Done</li></ul>|1|[Perfect Permutation](http://codeforces.com/problemset/problem/233/A)|Codeforces||Codeforces Round #144 (Div. 2)|1|\n|<ul><li>- [ ] Done</li></ul>|2|[T-primes](http://codeforces.com/problemset/problem/230/B)|Codeforces||Codeforces Round #142 (Div. 2)|1|\n|<ul><li>- [ ] Done</li></ul>|3|[Parallelepiped](http://codeforces.com/problemset/problem/224/A)|Codeforces||Codeforces Round #138 (Div. 2)|1|\n|<ul><li>- [ ] Done</li></ul>|4|[Drinks](http://codeforces.com/problemset/problem/200/B)|Codeforces||Codeforces Round #126 (Div. 2)|1|\n|<ul><li>- [ ] Done</li></ul>|5|[Cut Ribbon](http://codeforces.com/problemset/problem/189/A)|Codeforces||Codeforces Round #119 (Div. 2)|1|\n|<ul><li>- [ ] Done</li></ul>|6|[Tetrahedron](http://codeforces.com/problemset/problem/166/E)|Codeforces||Codeforces Round #113 (Div. 2)|1|\n|<ul><li>- [ ] Done</li></ul>|7|[Insomnia cure](http://codeforces.com/problemset/problem/148/A)|Codeforces||Codeforces Round #105 (Div. 2)|1|\n|<ul><li>- [ ] Done</li></ul>|8|[The number of positions](http://codeforces.com/problemset/problem/124/A)|Codeforces||Codeforces Beta Round #92 (Div. 2 Only)|1|\n|<ul><li>- [ ] Done</li></ul>|9|[Cifera](http://codeforces.com/problemset/problem/114/A)|Codeforces||Codeforces Beta Round #86 (Div. 2 Only)|1|\n|<ul><li>- [ ] Done</li></ul>|10|[Chips](http://codeforces.com/problemset/problem/92/A)|Codeforces||Codeforces Beta Round #75 (Div. 2 Only)|1|\n|<ul><li>- [ ] Done</li></ul>|11|[Toy Army](http://codeforces.com/problemset/problem/84/A)|Codeforces||Codeforces Beta Round #72 (Div. 2 Only)|1|\n|<ul><li>- [ ] Done</li></ul>|12|[Double Cola](http://codeforces.com/problemset/problem/82/A)|Codeforces||Yandex.Algorithm 2011 Qualification 2|1|\n|<ul><li>- [ ] Done</li></ul>|13|[Panoramix's Prediction](http://codeforces.com/problemset/problem/80/A)|Codeforces||Codeforces Beta Round #69 (Div. 2 Only)|1|\n|<ul><li>- [ ] Done</li></ul>|14|[Domino piling](http://codeforces.com/problemset/problem/50/A)|Codeforces||Codeforces Beta Round #47|1|\n|<ul><li>- [ ] Done</li></ul>|15|[Die Roll](http://codeforces.com/problemset/problem/9/A)|Codeforces||Codeforces Beta Round #9 (Div. 2 Only)|1|\n|<ul><li>- [ ] Done</li></ul>|16|[Triangle](http://codeforces.com/problemset/problem/6/A)|Codeforces||Codeforces Beta Round #6 (Div. 2 Only)|1|\n|<ul><li>- [ ] Done</li></ul>|17|[Watermelon](http://codeforces.com/problemset/problem/4/A)|Codeforces||Codeforces Beta Round #4 (Div. 2 Only)|1|\n|<ul><li>- [ ] Done</li></ul>|18|[Spreadsheet](http://codeforces.com/problemset/problem/1/B)|Codeforces||Codeforces Beta Round #1|1|\n|<ul><li>- [ ] Done</li></ul>|19|[Theatre Square](http://codeforces.com/problemset/problem/1/A)|Codeforces||Codeforces Beta Round #1|1|\n|<ul><li>- [ ] Done</li></ul>|20|[Buttons](http://codeforces.com/problemset/problem/268/B)|Codeforces||Codeforces Round #164 (Div. 2)|1|\n|<ul><li>- [ ] Done</li></ul>|21|[Fibonacci Numbers](http://acm.tju.edu.cn/toj/showp1208.html)|TJU|||1|\n|<ul><li>- [ ] Done</li></ul>|22|[Playing With Balls](http://www.spoj.com/problems/IITKWPCN/)|SPOJ|||1|\n|<ul><li>- [ ] Done</li></ul>|23|[Carmichael Numbers](https://uva.onlinejudge.org/index.php?option=onlinejudge&page=show_problem&problem=947)|UVA|||1|\n|<ul><li>- [ ] Done</li></ul>|24|[Clock Hands](https://uva.onlinejudge.org/index.php?option=onlinejudge&page=show_problem&problem=520)|UVA|||1|\n|<ul><li>- [ ] Done</li></ul>|25|[Why this kolaveri di](http://www.spoj.com/problems/WTK/)|SPOJ|||1|\n|<ul><li>- [ ] Done</li></ul>|26|[FANCY NUMBERS](http://www.spoj.com/problems/FANCY/)|SPOJ|||1|\n|<ul><li>- [ ] Done</li></ul>|27|[Play with Dates](http://www.spoj.com/problems/CODEIT03/)|SPOJ|||1|\n|<ul><li>- [ ] Done</li></ul>|28|[HOW MANY GAMES](http://www.spoj.com/problems/GAMES/)|SPOJ|||1|\n|<ul><li>- [ ] Done</li></ul>|29|[Touch of Venom](http://www.spoj.com/problems/VENOM/)|SPOJ|||1|\n|<ul><li>- [ ] Done</li></ul>|30|[Array fill I](https://www.urionlinejudge.com.br/judge/en/problems/view/1173)|URI|||1|\n|<ul><li>- [ ] Done</li></ul>|31|[Relational Operator](https://uva.onlinejudge.org/index.php?option=onlinejudge&page=show_problem&problem=2113)|UVA|||1|\n|<ul><li>- [ ] Done</li></ul>|32|[The Large Family](https://icpcarchive.ecs.baylor.edu/index.php?option=onlinejudge&page=show_problem&problem=4416)|Live Archive|2013|South Pacific|1|\n|<ul><li>- [ ] Done</li></ul>|33|[Prime Distance](https://uva.onlinejudge.org/index.php?option=onlinejudge&page=show_problem&problem=1081)|UVA|||1|\n|<ul><li>- [ ] Done</li></ul>|34|[New Year Candles](http://codeforces.com/problemset/problem/379/A)|Codeforces||Good Bye 2013|1|\n|<ul><li>- [ ] Done</li></ul>|35|[N-Factorful](http://www.spoj.com/problems/NFACTOR/)|SPOJ|||1|\n|<ul><li>- [ ] Done</li></ul>|36|[To Carry or not to Carry](https://uva.onlinejudge.org/index.php?option=onlinejudge&page=show_problem&problem=1410)|UVA|||1|\n|<ul><li>- [ ] Done</li></ul>|37|[Add them twice](p?ID=346)|A2 Online Judge|||1|\n|<ul><li>- [ ] Done</li></ul>|38|[Complicated GCD](http://codeforces.com/problemset/problem/664/A)|Codeforces||Codeforces Round #347 (Div. 2)|1|\n|<ul><li>- [ ] Done</li></ul>|39|[Round House](http://codeforces.com/problemset/problem/659/A)|Codeforces||Codeforces Round #346 (Div. 2)|1|\n|<ul><li>- [ ] Done</li></ul>|40|[Watchmen](http://codeforces.com/problemset/problem/650/A)|Codeforces||Codeforces Round #345 (Div. 1) & Codeforces Round #345 (Div. 2)|1|\n|<ul><li>- [ ] Done</li></ul>|41|[Lucky Numbers](http://codeforces.com/problemset/problem/630/C)|Codeforces||Experimental Educational Round: VolBIT Formulas Blitz|1|\n|<ul><li>- [ ] Done</li></ul>|42|[Save Luke](http://codeforces.com/problemset/problem/624/A)|Codeforces||AIM Tech Round (Div. 2)|1|\n|<ul><li>- [ ] Done</li></ul>|43|[Professor GukiZ's Robot](http://codeforces.com/problemset/problem/620/A)|Codeforces||Educational Codeforces Round 6|1|\n|<ul><li>- [ ] Done</li></ul>|44|[Elephant](http://codeforces.com/problemset/problem/617/A)|Codeforces||Codeforces Round #340 (Div. 2)|1|\n|<ul><li>- [ ] Done</li></ul>|45|[Pasha and Stick](http://codeforces.com/problemset/problem/610/A)|Codeforces||Codeforces Round #337 (Div. 2)|1|\n|<ul><li>- [ ] Done</li></ul>|46|[Tricky Sum](http://codeforces.com/problemset/problem/598/A)|Codeforces||Educational Codeforces Round 1|1|\n|<ul><li>- [ ] Done</li></ul>|47|[The Monster and the Squirrel](http://codeforces.com/problemset/problem/592/B)|Codeforces||Codeforces Round #328 (Div. 2)|1|\n|<ul><li>- [ ] Done</li></ul>|48|[Wizards' Duel](http://codeforces.com/problemset/problem/591/A)|Codeforces||Codeforces Round #327 (Div. 2)|1|\n|<ul><li>- [ ] Done</li></ul>|49|[Duff in Love](http://codeforces.com/problemset/problem/588/B)|Codeforces||Codeforces Round #326 (Div. 2)|1|\n|<ul><li>- [ ] Done</li></ul>|50|[Olesya and Rodion](http://codeforces.com/problemset/problem/584/A)|Codeforces||Codeforces Round #324 (Div. 2)|1|\n|<ul><li>- [ ] Done</li></ul>|51|[Vasya and Petya's Game](http://codeforces.com/problemset/problem/576/A)|Codeforces||Codeforces Round #319 (Div. 1) & Codeforces Round #319 (Div. 2)|1|\n|<ul><li>- [ ] Done</li></ul>|52|[Simple Game](http://codeforces.com/problemset/problem/570/B)|Codeforces||Codeforces Round #316 (Div. 2)|1|\n|<ul><li>- [ ] Done</li></ul>|53|[Gerald's Hexagon](http://codeforces.com/problemset/problem/559/A)|Codeforces||Codeforces Round #313 (Div. 1) & Codeforces Round #313 (Div. 2)|1|\n|<ul><li>- [ ] Done</li></ul>|54|[Kyoya and Photobooks](http://codeforces.com/problemset/problem/554/A)|Codeforces||Codeforces Round #309 (Div. 2)|1|\n|<ul><li>- [ ] Done</li></ul>|55|[Vanya and Books](http://codeforces.com/problemset/problem/552/B)|Codeforces||Codeforces Round #308 (Div. 2)|1|\n|<ul><li>- [ ] Done</li></ul>|56|[Vanya and Table](http://codeforces.com/problemset/problem/552/A)|Codeforces||Codeforces Round #308 (Div. 2)|1|\n|<ul><li>- [ ] Done</li></ul>|57|[Divisibility by Eight](http://codeforces.com/problemset/problem/550/C)|Codeforces||Codeforces Round #306 (Div. 2)|1|\n|<ul><li>- [ ] Done</li></ul>|58|[Soldier and Bananas](http://codeforces.com/problemset/problem/546/A)|Codeforces||Codeforces Round #304 (Div. 2)|1|\n|<ul><li>- [ ] Done</li></ul>|59|[Playing with Paper](http://codeforces.com/problemset/problem/527/A)|Codeforces||Codeforces Round #296 (Div. 2)|1|\n|<ul><li>- [ ] Done</li></ul>|60|[Two Buttons](http://codeforces.com/problemset/problem/520/B)|Codeforces||Codeforces Round #295 (Div. 2)|1|\n|<ul><li>- [ ] Done</li></ul>|61|[A and B and Team Training](http://codeforces.com/problemset/problem/519/C)|Codeforces||Codeforces Round #294 (Div. 2)|1|\n|<ul><li>- [ ] Done</li></ul>|62|[Drazil and Factorial](http://codeforces.com/problemset/problem/515/C)|Codeforces||Codeforces Round #292 (Div. 2) & Codeforces Round #292 (Div. 1)|1|\n|<ul><li>- [ ] Done</li></ul>|63|[Drazil and Date](http://codeforces.com/problemset/problem/515/A)|Codeforces||Codeforces Round #292 (Div. 2)|1|\n|<ul><li>- [ ] Done</li></ul>|64|[Han Solo and Lazer Gun](http://codeforces.com/problemset/problem/514/B)|Codeforces||Codeforces Round #291 (Div. 2)|1|\n|<ul><li>- [ ] Done</li></ul>|65|[Game](http://codeforces.com/problemset/problem/513/A)|Codeforces||Rockethon 2015|1|\n|<ul><li>- [ ] Done</li></ul>|66|[Amr and Pins](http://codeforces.com/problemset/problem/507/B)|Codeforces||Codeforces Round #287 (Div. 2)|1|\n|<ul><li>- [ ] Done</li></ul>|67|[Minimum Difficulty](http://codeforces.com/problemset/problem/496/A)|Codeforces||Codeforces Round #283 (Div. 2)|1|\n|<ul><li>- [ ] Done</li></ul>|68|[Vanya and Lanterns](http://codeforces.com/problemset/problem/492/B)|Codeforces||Codeforces Round #280 (Div. 2)|1|\n|<ul><li>- [ ] Done</li></ul>|69|[Calculating Function](http://codeforces.com/problemset/problem/486/A)|Codeforces||Codeforces Round #277 (Div. 2)|1|\n|<ul><li>- [ ] Done</li></ul>|70|[Expression](http://codeforces.com/problemset/problem/479/A)|Codeforces||Codeforces Round #274 (Div. 2)|1|\n|<ul><li>- [ ] Done</li></ul>|71|[Random Teams](http://codeforces.com/problemset/problem/478/B)|Codeforces||Codeforces Round #273 (Div. 2)|1|\n|<ul><li>- [ ] Done</li></ul>|72|[Dreamoon and WiFi](http://codeforces.com/problemset/problem/476/B)|Codeforces||Codeforces Round #272 (Div. 2)|1|\n|<ul><li>- [ ] Done</li></ul>|73|[Dreamoon and Stairs](http://codeforces.com/problemset/problem/476/A)|Codeforces||Codeforces Round #272 (Div. 2)|1|\n|<ul><li>- [ ] Done</li></ul>|74|[Design Tutorial: Learn from Math](http://codeforces.com/problemset/problem/472/A)|Codeforces||Codeforces Round #270|1|\n|<ul><li>- [ ] Done</li></ul>|75|[Caisa and Pylons](http://codeforces.com/problemset/problem/463/B)|Codeforces||Codeforces Round #264 (Div. 2)|1|\n|<ul><li>- [ ] Done</li></ul>|76|[Fedya and Maths](http://codeforces.com/problemset/problem/456/B)|Codeforces||Codeforces Round #260 (Div. 2)|1|\n|<ul><li>- [ ] Done</li></ul>|77|[Jzzhu and Sequences](http://codeforces.com/problemset/problem/450/B)|Codeforces||Codeforces Round #257 (Div. 2)|1|\n|<ul><li>- [ ] Done</li></ul>|78|[Vanya and Cards](http://codeforces.com/problemset/problem/401/A)|Codeforces||Codeforces Round #235 (Div. 2)|1|\n|<ul><li>- [ ] Done</li></ul>|79|[Fox and Number Game](http://codeforces.com/problemset/problem/389/A)|Codeforces||Codeforces Round #228 (Div. 2)|1|\n|<ul><li>- [ ] Done</li></ul>|80|[Domino](http://codeforces.com/problemset/problem/353/A)|Codeforces||Codeforces Round #205 (Div. 2)|1|\n|<ul><li>- [ ] Done</li></ul>|81|[Jeff and Digits](http://codeforces.com/problemset/problem/352/A)|Codeforces||Codeforces Round #204 (Div. 2)|1|\n|<ul><li>- [ ] Done</li></ul>|82|[Hungry Sequence](http://codeforces.com/problemset/problem/327/B)|Codeforces||Codeforces Round #191 (Div. 2)|1|\n|<ul><li>- [ ] Done</li></ul>|83|[Even Odds](http://codeforces.com/problemset/problem/318/A)|Codeforces||Codeforces Round #188 (Div. 2)|1|\n|<ul><li>- [ ] Done</li></ul>|84|[Shaass and Oskols](http://codeforces.com/problemset/problem/294/A)|Codeforces||Codeforces Round #178 (Div. 2)|1|\n|<ul><li>- [ ] Done</li></ul>|85|[Dima and Friends](http://codeforces.com/problemset/problem/272/A)|Codeforces||Codeforces Round #167 (Div. 2)|1|\n|<ul><li>- [ ] Done</li></ul>|86|[Fancy Fence](http://codeforces.com/problemset/problem/270/A)|Codeforces||Codeforces Round #165 (Div. 2)|1|\n|<ul><li>- [ ] Done</li></ul>|87|[Little Elephant and Bits](http://codeforces.com/problemset/problem/258/A)|Codeforces||Codeforces Round #157 (Div. 1) & Codeforces Round #157 (Div. 2)|1|\n|<ul><li>- [ ] Done</li></ul>|88|[Young Physicist](http://codeforces.com/problemset/problem/69/A)|Codeforces||Codeforces Beta Round #63 (Div. 2)|1|\n|<ul><li>- [ ] Done</li></ul>|89|[Infinite Sequence](http://codeforces.com/problemset/problem/675/A)|Codeforces||Codeforces Round #353 (Div. 2)|1|\n|<ul><li>- [ ] Done</li></ul>|90|[Hashmat the Brave Warrior](https://uva.onlinejudge.org/index.php?option=onlinejudge&page=show_problem&problem=996)|UVA|||1|\n|<ul><li>- [ ] Done</li></ul>|91|[Simple Math](p?ID=347)|A2 Online Judge|||1|\n|<ul><li>- [ ] Done</li></ul>|92|[Initial Bet](http://codeforces.com/problemset/problem/478/A)|Codeforces||Codeforces Round #273 (Div. 2)|1|\n|<ul><li>- [ ] Done</li></ul>|93|[Prime Generator](http://www.spoj.com/problems/PRIME1/)|SPOJ|||1|\n|<ul><li>- [ ] Done</li></ul>|94|[I'm bored with life](http://codeforces.com/problemset/problem/822/A)|Codeforces||Codeforces Round #422 (Div. 2)|1|\n|<ul><li>- [ ] Done</li></ul>|95|[Sasha and Sticks](http://codeforces.com/problemset/problem/832/A)|Codeforces||Codeforces Round #425 (Div. 2)|1|\n|<ul><li>- [ ] Done</li></ul>|96|[Hello](p?ID=343)|A2 Online Judge|||1|\n|<ul><li>- [ ] Done</li></ul>|97|[Add Two numbers](p?ID=344)|A2 Online Judge|||1|\n|<ul><li>- [ ] Done</li></ul>|98|[Roommate Agreement](http://www.spoj.com/problems/CRAN02/)|SPOJ|||1|\n|<ul><li>- [ ] Done</li></ul>|99|[Prime or Not](http://www.spoj.com/problems/PON/)|SPOJ|||1|\n|<ul><li>- [ ] Done</li></ul>|100|[DDD](https://www.urionlinejudge.com.br/judge/en/problems/view/1050)|URI|||1|\n|<ul><li>- [ ] Done</li></ul>|101|[Factorial Frequencies](https://uva.onlinejudge.org/index.php?option=onlinejudge&page=show_problem&problem=260)|UVA|||1|\n|<ul><li>- [ ] Done</li></ul>|102|[Bachgold Problem](http://codeforces.com/problemset/problem/749/A)|Codeforces||Codeforces Round #388 (Div. 2)|1|\n|<ul><li>- [ ] Done</li></ul>|103|[Taymyr is calling you](http://codeforces.com/problemset/problem/764/A)|Codeforces||Codeforces Round #395 (Div. 2)|1|\n|<ul><li>- [ ] Done</li></ul>|104|[Fraction](http://codeforces.com/problemset/problem/854/A)|Codeforces||Codeforces Round #433 (Div. 2, based on Olympiad of Metropolises)|1|\n|<ul><li>- [ ] Done</li></ul>|105|[Lovely Palindromes](http://codeforces.com/problemset/problem/688/B)|Codeforces||Codeforces Round #360 (Div. 2)|1|\n|<ul><li>- [ ] Done</li></ul>|106|[Arpa’s hard exam and Mehrdad’s naive cheat](http://codeforces.com/problemset/problem/742/A)|Codeforces||Codeforces Round #383 (Div. 2)|1|\n|<ul><li>- [ ] Done</li></ul>|107|[Anastasia and pebbles](http://codeforces.com/problemset/problem/789/A)|Codeforces||Codeforces Round #407 (Div. 2)|1|\n|<ul><li>- [ ] Done</li></ul>|108|[The Eternal Immortality](http://codeforces.com/problemset/problem/869/B)|Codeforces||Codeforces Round #439 (Div. 2)|1|\n|<ul><li>- [ ] Done</li></ul>|109|[Meeting of Old Friends](http://codeforces.com/problemset/problem/714/A)|Codeforces||Codeforces Round #371 (Div. 2)|1|\n|<ul><li>- [ ] Done</li></ul>|110|[Godsend](http://codeforces.com/problemset/problem/841/B)|Codeforces||Codeforces Round #429 (Div. 2)|1|\n|<ul><li>- [ ] Done</li></ul>|111|[The Monster](http://codeforces.com/problemset/problem/787/A)|Codeforces||Codeforces Round #406 (Div. 2)|1|\n|<ul><li>- [ ] Done</li></ul>|112|[Maximum Clique](http://acm.zju.edu.cn/onlinejudge/showProblem.do?problemCode=1492)|ZOJ|||1|\n|<ul><li>- [ ] Done</li></ul>|113|[Dragons](http://codeforces.com/problemset/problem/230/A)|Codeforces||Codeforces Round #142 (Div. 2)|1|\n|<ul><li>- [ ] Done</li></ul>|114|[Soldier and Cards](http://codeforces.com/problemset/problem/546/C)|Codeforces||Codeforces Round #304 (Div. 2)|1|\n|<ul><li>- [ ] Done</li></ul>|115|[Simple Equations](https://uva.onlinejudge.org/index.php?option=onlinejudge&page=show_problem&problem=2612)|UVA|||1|\n|<ul><li>- [ ] Done</li></ul>|116|[Simple Sum](https://www.urionlinejudge.com.br/judge/en/problems/view/1003)|URI|||1|\n|<ul><li>- [ ] Done</li></ul>|117|[Simple Product](https://www.urionlinejudge.com.br/judge/en/problems/view/1004)|URI|||1|\n|<ul><li>- [ ] Done</li></ul>|118|[Average 2](https://www.urionlinejudge.com.br/judge/en/problems/view/1006)|URI|||1|\n|<ul><li>- [ ] Done</li></ul>|119|[Difference](https://www.urionlinejudge.com.br/judge/en/problems/view/1007)|URI|||1|\n|<ul><li>- [ ] Done</li></ul>|120|[Salary with Bonus](https://www.urionlinejudge.com.br/judge/en/problems/view/1009)|URI|||1|\n|<ul><li>- [ ] Done</li></ul>|121|[Area](https://www.urionlinejudge.com.br/judge/en/problems/view/1012)|URI|||1|\n|<ul><li>- [ ] Done</li></ul>|122|[Sphere](https://www.urionlinejudge.com.br/judge/en/problems/view/1011)|URI|||1|\n|<ul><li>- [ ] Done</li></ul>|123|[Time Conversion](https://www.urionlinejudge.com.br/judge/en/problems/view/1019)|URI|||1|\n|<ul><li>- [ ] Done</li></ul>|124|[Distance Between Two Points](https://www.urionlinejudge.com.br/judge/en/problems/view/1015)|URI|||1|\n|<ul><li>- [ ] Done</li></ul>|125|[Fuel Spent](https://www.urionlinejudge.com.br/judge/en/problems/view/1017)|URI|||1|\n|<ul><li>- [ ] Done</li></ul>|126|[Simple Calculate](https://www.urionlinejudge.com.br/judge/en/problems/view/1010)|URI|||1|\n|<ul><li>- [ ] Done</li></ul>|127|[Bachelor Arithmetic](https://icpcarchive.ecs.baylor.edu/index.php?option=onlinejudge&page=show_problem&problem=2056)|Live Archive|2007|Asia - Dhaka|1|\n|<ul><li>- [ ] Done</li></ul>|128|[GCD](https://uva.onlinejudge.org/index.php?option=onlinejudge&page=show_problem&problem=2412)|UVA|||1|\n|<ul><li>- [ ] Done</li></ul>|129|[Little Elephant and Magic Square](http://codeforces.com/problemset/problem/259/B)|Codeforces||Codeforces Round #157 (Div. 2)|2|\n|<ul><li>- [ ] Done</li></ul>|130|[Increase and Decrease](http://codeforces.com/problemset/problem/246/B)|Codeforces||Codeforces Round #151 (Div. 2)|2|\n|<ul><li>- [ ] Done</li></ul>|131|[Little Elephant and Function](http://codeforces.com/problemset/problem/221/A)|Codeforces||Codeforces Round #136 (Div. 2)|2|\n|<ul><li>- [ ] Done</li></ul>|132|[Another Problem on Strings](http://codeforces.com/problemset/problem/165/C)|Codeforces||Codeforces Round #112 (Div. 2)|2|\n|<ul><li>- [ ] Done</li></ul>|133|[The World is a Theatre](http://codeforces.com/problemset/problem/131/C)|Codeforces||Codeforces Beta Round #95 (Div. 2)|2|\n|<ul><li>- [ ] Done</li></ul>|134|[Opposites Attract](http://codeforces.com/problemset/problem/131/B)|Codeforces||Codeforces Beta Round #95 (Div. 2)|2|\n|<ul><li>- [ ] Done</li></ul>|135|[Faulty Odometer](http://acm.tju.edu.cn/toj/showp1987.html)|TJU|||2|\n|<ul><li>- [ ] Done</li></ul>|136|[Marbles](https://uva.onlinejudge.org/index.php?option=onlinejudge&page=show_problem&problem=1031)|UVA|||2|\n|<ul><li>- [ ] Done</li></ul>|137|[Permutations](https://uva.onlinejudge.org/index.php?option=onlinejudge&page=show_problem&problem=882)|UVA|||2|\n|<ul><li>- [ ] Done</li></ul>|138|[Coconuts, Revisited](https://uva.onlinejudge.org/index.php?option=onlinejudge&page=show_problem&problem=557)|UVA|||2|\n|<ul><li>- [ ] Done</li></ul>|139|[PRIMITIVEROOTS](http://www.spoj.com/problems/PROBLEM4/)|SPOJ|||2|\n|<ul><li>- [ ] Done</li></ul>|140|[GRADE POINT AVERAGE](http://www.spoj.com/problems/GPA1/)|SPOJ|||2|\n|<ul><li>- [ ] Done</li></ul>|141|[EVEN COUNT](http://www.spoj.com/problems/GEEKOUNT/)|SPOJ|||2|\n|<ul><li>- [ ] Done</li></ul>|142|[Triangular numbers](http://codeforces.com/problemset/problem/47/A)|Codeforces||Codeforces Beta Round #44 (Div. 2)|2|\n|<ul><li>- [ ] Done</li></ul>|143|[Matrix Multiplication](http://poj.org/problem?id=3318)|PKU|||2|\n|<ul><li>- [ ] Done</li></ul>|144|[Lever](http://codeforces.com/problemset/problem/376/A)|Codeforces||Codeforces Round #221 (Div. 2)|2|\n|<ul><li>- [ ] Done</li></ul>|145|[Help Vasilisa the Wise 2](http://codeforces.com/problemset/problem/143/A)|Codeforces||Codeforces Round #102 (Div. 2)|2|\n|<ul><li>- [ ] Done</li></ul>|146|[Simple Addition](https://uva.onlinejudge.org/index.php?option=onlinejudge&page=show_problem&problem=1935)|UVA|||2|\n|<ul><li>- [ ] Done</li></ul>|147|[Little Dima and Equation](http://codeforces.com/problemset/problem/460/B)|Codeforces||Codeforces Round #262 (Div. 2)|2|\n|<ul><li>- [ ] Done</li></ul>|148|[Mafia](http://codeforces.com/problemset/problem/348/A)|Codeforces||Codeforces Round #202 (Div. 1) & Codeforces Round #202 (Div. 2)|2|\n|<ul><li>- [ ] Done</li></ul>|149|[Ebony and Ivory](http://codeforces.com/problemset/problem/633/A)|Codeforces||Manthan, Codefest 16|2|\n|<ul><li>- [ ] Done</li></ul>|150|[Divisibility](http://codeforces.com/problemset/problem/630/J)|Codeforces||Experimental Educational Round: VolBIT Formulas Blitz|2|\n|<ul><li>- [ ] Done</li></ul>|151|[Hexagons!](http://codeforces.com/problemset/problem/630/D)|Codeforces||Experimental Educational Round: VolBIT Formulas Blitz|2|\n|<ul><li>- [ ] Done</li></ul>|152|[Infinite Sequence](http://codeforces.com/problemset/problem/622/A)|Codeforces||Educational Codeforces Round 7|2|\n|<ul><li>- [ ] Done</li></ul>|153|[Saitama Destroys Hotel](http://codeforces.com/problemset/problem/608/A)|Codeforces||Codeforces Round #336 (Div. 2)|2|\n|<ul><li>- [ ] Done</li></ul>|154|[Kyoya and Colored Balls](http://codeforces.com/problemset/problem/553/A)|Codeforces||Codeforces Round #309 (Div. 1) & Codeforces Round #309 (Div. 2)|2|\n|<ul><li>- [ ] Done</li></ul>|155|[Soldier and Number Game](http://codeforces.com/problemset/problem/546/D)|Codeforces||Codeforces Round #304 (Div. 2)|2|\n|<ul><li>- [ ] Done</li></ul>|156|[Tourist's Notes](http://codeforces.com/problemset/problem/538/C)|Codeforces||Codeforces Round #300|2|\n|<ul><li>- [ ] Done</li></ul>|157|[Covered Path](http://codeforces.com/problemset/problem/534/B)|Codeforces||Codeforces Round #298 (Div. 2)|2|\n|<ul><li>- [ ] Done</li></ul>|158|[New Year Book Reading](http://codeforces.com/problemset/problem/500/C)|Codeforces||Good Bye 2014|2|\n|<ul><li>- [ ] Done</li></ul>|159|[New Year Permutation](http://codeforces.com/problemset/problem/500/B)|Codeforces||Good Bye 2014|2|\n|<ul><li>- [ ] Done</li></ul>|160|[Hacking Cypher](http://codeforces.com/problemset/problem/490/C)|Codeforces||Codeforces Round #279 (Div. 2)|2|\n|<ul><li>- [ ] Done</li></ul>|161|[Factory](http://codeforces.com/problemset/problem/485/A)|Codeforces||Codeforces Round #276 (Div. 2)|2|\n|<ul><li>- [ ] Done</li></ul>|162|[24 Game](http://codeforces.com/problemset/problem/468/A)|Codeforces||Codeforces Round #268 (Div. 1) & Codeforces Round #268 (Div. 2)|2|\n|<ul><li>- [ ] Done</li></ul>|163|[Bear and Strings](http://codeforces.com/problemset/problem/385/B)|Codeforces||Codeforces Round #226 (Div. 2)|2|\n|<ul><li>- [ ] Done</li></ul>|164|[Fixed Points](http://codeforces.com/problemset/problem/347/B)|Codeforces||Codeforces Round #201 (Div. 2)|2|\n|<ul><li>- [ ] Done</li></ul>|165|[Alice and Bob](http://codeforces.com/problemset/problem/346/A)|Codeforces||Codeforces Round #201 (Div. 1) & Codeforces Round #201 (Div. 2)|2|\n|<ul><li>- [ ] Done</li></ul>|166|[Simple Molecules](http://codeforces.com/problemset/problem/344/B)|Codeforces||Codeforces Round #200 (Div. 2)|2|\n|<ul><li>- [ ] Done</li></ul>|167|[Rational Resistance](http://codeforces.com/problemset/problem/343/A)|Codeforces||Codeforces Round #200 (Div. 1) & Codeforces Round #200 (Div. 2)|2|\n|<ul><li>- [ ] Done</li></ul>|168|[The Wall](http://codeforces.com/problemset/problem/340/A)|Codeforces||Codeforces Round #198 (Div. 2)|2|\n|<ul><li>- [ ] Done</li></ul>|169|[Vasily the Bear and Triangle](http://codeforces.com/problemset/problem/336/A)|Codeforces||Codeforces Round #195 (Div. 2)|2|\n|<ul><li>- [ ] Done</li></ul>|170|[Ciel and Flowers](http://codeforces.com/problemset/problem/322/B)|Codeforces||Codeforces Round #190 (Div. 2)|2|\n|<ul><li>- [ ] Done</li></ul>|171|[Archer](http://codeforces.com/problemset/problem/312/B)|Codeforces||Codeforces Round #185 (Div. 2)|2|\n|<ul><li>- [ ] Done</li></ul>|172|[Yaroslav and Permutations](http://codeforces.com/problemset/problem/296/A)|Codeforces||Codeforces Round #179 (Div. 2)|2|\n|<ul><li>- [ ] Done</li></ul>|173|[Painting Eggs](http://codeforces.com/problemset/problem/282/B)|Codeforces||Codeforces Round #173 (Div. 2)|2|\n|<ul><li>- [ ] Done</li></ul>|174|[Prime Matrix](http://codeforces.com/problemset/problem/271/B)|Codeforces||Codeforces Round #166 (Div. 2)|2|\n|<ul><li>- [ ] Done</li></ul>|175|[Adding Digits](http://codeforces.com/problemset/problem/260/A)|Codeforces||Codeforces Round #158 (Div. 2)|2|\n|<ul><li>- [ ] Done</li></ul>|176|[Two Bags of Potatoes](http://codeforces.com/problemset/problem/239/A)|Codeforces||Codeforces Round #148 (Div. 2)|2|\n|<ul><li>- [ ] Done</li></ul>|177|[Hexadecimal's Numbers](http://codeforces.com/problemset/problem/9/C)|Codeforces||Codeforces Beta Round #9 (Div. 2 Only)|2|\n|<ul><li>- [ ] Done</li></ul>|178|[Drazil and His Happy Friends](http://codeforces.com/problemset/problem/515/B)|Codeforces||Codeforces Round #292 (Div. 1) & Codeforces Round #292 (Div. 2) & Codeforces Round #292 (Div. 1) & Codeforces Round #292 (Div. 2)|2|\n|<ul><li>- [ ] Done</li></ul>|179|[Little Artem and Presents](http://codeforces.com/problemset/problem/669/A)|Codeforces||Codeforces Round #348 (VK Cup 2016 Round 2, Div. 2 Edition)|2|\n|<ul><li>- [ ] Done</li></ul>|180|[Pouring Rain](http://codeforces.com/problemset/problem/667/A)|Codeforces||Codeforces Round #349 (Div. 2)|2|\n|<ul><li>- [ ] Done</li></ul>|181|[Restoring Painting](http://codeforces.com/problemset/problem/675/B)|Codeforces||Codeforces Round #353 (Div. 2)|2|\n|<ul><li>- [ ] Done</li></ul>|182|[Vanya and Food Processor](http://codeforces.com/problemset/problem/677/B)|Codeforces||Codeforces Round #355 (Div. 2)|2|\n|<ul><li>- [ ] Done</li></ul>|183|[Queries on a String](http://codeforces.com/problemset/problem/598/B)|Codeforces||Educational Codeforces Round 1|2|\n|<ul><li>- [ ] Done</li></ul>|184|[Searching the Graph](http://pl.spoj.com/problems/TDBFS/)|SPOJ Poland|||2|\n|<ul><li>- [ ] Done</li></ul>|185|[Frugal Search](https://icpcarchive.ecs.baylor.edu/index.php?option=onlinejudge&page=show_problem&problem=1599)|Live Archive|2006|North America - Mid-Central USA|2|\n|<ul><li>- [ ] Done</li></ul>|186|[Leha and Function](http://codeforces.com/problemset/problem/840/A)|Codeforces||Codeforces Round #429 (Div. 1) & Codeforces Round #429 (Div. 2)|2|\n|<ul><li>- [ ] Done</li></ul>|187|[Plus and Square Root](http://codeforces.com/problemset/problem/715/A)|Codeforces||Codeforces Round #372 (Div. 1) & Codeforces Round #372 (Div. 2)|2|\n|<ul><li>- [ ] Done</li></ul>|188|[Tennis Championship](http://codeforces.com/problemset/problem/735/C)|Codeforces||Codeforces Round #382 (Div. 2) & Codeforces Round #382 (Div. 1)|2|\n|<ul><li>- [ ] Done</li></ul>|189|[Taxes](http://codeforces.com/problemset/problem/735/D)|Codeforces||Codeforces Round #382 (Div. 2) & Codeforces Round #382 (Div. 1)|2|\n|<ul><li>- [ ] Done</li></ul>|190|[Pride](http://codeforces.com/problemset/problem/891/A)|Codeforces||Codeforces Round #446 (Div. 1) & Codeforces Round #446 (Div. 2)|2|\n|<ul><li>- [ ] Done</li></ul>|191|[Straight <<A>>](http://codeforces.com/problemset/problem/810/A)|Codeforces||Codeforces Round #415 (Div. 2)|2|\n|<ul><li>- [ ] Done</li></ul>|192|[Okabe and Banana Trees](http://codeforces.com/problemset/problem/821/B)|Codeforces||Codeforces Round #420 (Div. 2)|2|\n|<ul><li>- [ ] Done</li></ul>|193|[Position in Fraction](http://codeforces.com/problemset/problem/900/B)|Codeforces||Codeforces Round #450 (Div. 2)|2|\n|<ul><li>- [ ] Done</li></ul>|194|[Mishka and trip](http://codeforces.com/problemset/problem/703/B)|Codeforces||Codeforces Round #365 (Div. 2)|2|\n|<ul><li>- [ ] Done</li></ul>|195|[Vladik and fractions](http://codeforces.com/problemset/problem/743/C)|Codeforces||Codeforces Round #384 (Div. 2)|2|\n|<ul><li>- [ ] Done</li></ul>|196|[Pythagorean Triples](http://codeforces.com/problemset/problem/707/C)|Codeforces||Codeforces Round #368 (Div. 2)|2|\n|<ul><li>- [ ] Done</li></ul>|197|[Arpa’s obvious problem and Mehrdad’s terrible solution](http://codeforces.com/problemset/problem/742/B)|Codeforces||Codeforces Round #383 (Div. 2)|2|\n|<ul><li>- [ ] Done</li></ul>|198|[Anton and Fairy Tale](http://codeforces.com/problemset/problem/785/C)|Codeforces||Codeforces Round #404 (Div. 2)|2|\n|<ul><li>- [ ] Done</li></ul>|199|[GCD Table](http://codeforces.com/problemset/problem/582/A)|Codeforces||Codeforces Round #323 (Div. 1) & Codeforces Round #323 (Div. 2)|2|\n|<ul><li>- [ ] Done</li></ul>|200|[Non-square Equation](http://codeforces.com/problemset/problem/233/B)|Codeforces||Codeforces Round #144 (Div. 2)|3|\n|<ul><li>- [ ] Done</li></ul>|201|[Tiling with Hexagons](http://codeforces.com/problemset/problem/216/A)|Codeforces||Codeforces Round #133 (Div. 2)|3|\n|<ul><li>- [ ] Done</li></ul>|202|[Let's Watch Football](http://codeforces.com/problemset/problem/195/A)|Codeforces||Codeforces Round #123 (Div. 2)|3|\n|<ul><li>- [ ] Done</li></ul>|203|[Exams](http://codeforces.com/problemset/problem/194/A)|Codeforces||Codeforces Round #122 (Div. 2)|3|\n|<ul><li>- [ ] Done</li></ul>|204|[Vasya and the Bus](http://codeforces.com/problemset/problem/190/A)|Codeforces||Codeforces Round #120 (Div. 2)|3|\n|<ul><li>- [ ] Done</li></ul>|205|[Plant](http://codeforces.com/problemset/problem/185/A)|Codeforces||Codeforces Round #118 (Div. 1) & Codeforces Round #118 (Div. 2)|3|\n|<ul><li>- [ ] Done</li></ul>|206|[Median](http://codeforces.com/problemset/problem/166/C)|Codeforces||Codeforces Round #113 (Div. 2)|3|\n|<ul><li>- [ ] Done</li></ul>|207|[New Year Table](http://codeforces.com/problemset/problem/140/A)|Codeforces||Codeforces Round #100|3|\n|<ul><li>- [ ] Done</li></ul>|208|[Ternary Logic](http://codeforces.com/problemset/problem/136/B)|Codeforces||Codeforces Beta Round #97 (Div. 2)|3|\n|<ul><li>- [ ] Done</li></ul>|209|[Testing Pants for Sadness](http://codeforces.com/problemset/problem/103/A)|Codeforces||Codeforces Beta Round #80 (Div. 1 Only) & Codeforces Beta Round #80 (Div. 2 Only)|3|\n|<ul><li>- [ ] Done</li></ul>|210|[Noldbach problem](http://codeforces.com/problemset/problem/17/A)|Codeforces||Codeforces Beta Round #17|3|\n|<ul><li>- [ ] Done</li></ul>|211|[Numbers](http://codeforces.com/problemset/problem/13/A)|Codeforces||Codeforces Beta Round #13|3|\n|<ul><li>- [ ] Done</li></ul>|212|[Increasing Sequence](http://codeforces.com/problemset/problem/11/A)|Codeforces||Codeforces Beta Round #11|3|\n|<ul><li>- [ ] Done</li></ul>|213|[The least round way](http://codeforces.com/problemset/problem/2/B)|Codeforces||Codeforces Beta Round #2|3|\n|<ul><li>- [ ] Done</li></ul>|214|[Azooz](http://www.spoj.com/problems/AZOOZ/)|SPOJ|||3|\n|<ul><li>- [ ] Done</li></ul>|215|[Fox Dividing Cheese](http://codeforces.com/problemset/problem/371/B)|Codeforces||Codeforces Round #218 (Div. 2)|3|\n|<ul><li>- [ ] Done</li></ul>|216|[Catch Me If You Can ](http://www.spoj.com/problems/CMIYC/)|SPOJ|||3|\n|<ul><li>- [ ] Done</li></ul>|217|[FUN WITH LETTERS](http://www.spoj.com/problems/FUNNUMS/)|SPOJ|||3|\n|<ul><li>- [ ] Done</li></ul>|218|[ZEROES IN RANGE V2](http://www.spoj.com/problems/RANGZER2/)|SPOJ|||3|\n|<ul><li>- [ ] Done</li></ul>|219|[N - DIGIT NUMBERS](http://www.spoj.com/problems/NDIGITS/)|SPOJ|||3|\n|<ul><li>- [ ] Done</li></ul>|220|[LUCKYNINE](http://www.spoj.com/problems/NITHY/)|SPOJ|||3|\n|<ul><li>- [ ] Done</li></ul>|221|[SPIRAL RUN](http://www.spoj.com/problems/SPIRAL2/)|SPOJ|||3|\n|<ul><li>- [ ] Done</li></ul>|222|[Easy Sum-2](p?ID=155)|A2 Online Judge|||3|\n|<ul><li>- [ ] Done</li></ul>|223|[Burger](https://uva.onlinejudge.org/index.php?option=onlinejudge&page=show_problem&problem=498)|UVA|||3|\n|<ul><li>- [ ] Done</li></ul>|224|[Pashmak and Buses](http://codeforces.com/problemset/problem/459/C)|Codeforces||Codeforces Round #261 (Div. 2)|3|\n|<ul><li>- [ ] Done</li></ul>|225|[Rook, Bishop and King](http://codeforces.com/problemset/problem/370/A)|Codeforces||Codeforces Round #217 (Div. 2)|3|\n|<ul><li>- [ ] Done</li></ul>|226|[Cows and Primitive Roots](http://codeforces.com/problemset/problem/284/A)|Codeforces||Codeforces Round #174 (Div. 2)|3|\n|<ul><li>- [ ] Done</li></ul>|227|[Modular Equations](http://codeforces.com/problemset/problem/495/B)|Codeforces||Codeforces Round #282 (Div. 2)|3|\n|<ul><li>- [ ] Done</li></ul>|228|[Polynomial-time Reductions](https://icpcarchive.ecs.baylor.edu/index.php?option=onlinejudge&page=show_problem&problem=2273)|Live Archive|2008|Asia - Hefei|3|\n|<ul><li>- [ ] Done</li></ul>|229|[Powerful array](http://codeforces.com/problemset/problem/86/D)|Codeforces||Yandex.Algorithm 2011 Round 2|3|\n|<ul><li>- [ ] Done</li></ul>|230|[Geometry Problem](https://icpcarchive.ecs.baylor.edu/index.php?option=onlinejudge&page=show_problem&problem=2677)|Live Archive|2009|Asia - Amritapuri|3|\n|<ul><li>- [ ] Done</li></ul>|231|[Bicycle Race](http://codeforces.com/problemset/problem/659/D)|Codeforces||Codeforces Round #346 (Div. 2)|3|\n|<ul><li>- [ ] Done</li></ul>|232|[A Trivial Problem](http://codeforces.com/problemset/problem/633/B)|Codeforces||Manthan, Codefest 16|3|\n|<ul><li>- [ ] Done</li></ul>|233|[Moore's Law](http://codeforces.com/problemset/problem/630/B)|Codeforces||Experimental Educational Round: VolBIT Formulas Blitz|3|\n|<ul><li>- [ ] Done</li></ul>|234|[Guest From the Past](http://codeforces.com/problemset/problem/625/A)|Codeforces||Codeforces Round #342 (Div. 2)|3|\n|<ul><li>- [ ] Done</li></ul>|235|[Replace To Make Regular Bracket Sequence](http://codeforces.com/problemset/problem/612/C)|Codeforces||Educational Codeforces Round 4|3|\n|<ul><li>- [ ] Done</li></ul>|236|[A Problem about Polyline](http://codeforces.com/problemset/problem/578/A)|Codeforces||Codeforces Round #320 (Div. 1) [Bayan Thanks-Round] & Codeforces Round #320 (Div. 2) [Bayan Thanks-Round]|3|\n|<ul><li>- [ ] Done</li></ul>|237|[Music](http://codeforces.com/problemset/problem/569/A)|Codeforces||Codeforces Round #315 (Div. 2)|3|\n|<ul><li>- [ ] Done</li></ul>|238|[Primes or Palindromes?](http://codeforces.com/problemset/problem/568/A)|Codeforces||Codeforces Round #315 (Div. 1) & Codeforces Round #315 (Div. 2)|3|\n|<ul><li>- [ ] Done</li></ul>|239|[Vanya and Scales](http://codeforces.com/problemset/problem/552/C)|Codeforces||Codeforces Round #308 (Div. 2)|3|\n|<ul><li>- [ ] Done</li></ul>|240|[Polycarpus' Dice](http://codeforces.com/problemset/problem/534/C)|Codeforces||Codeforces Round #298 (Div. 2)|3|\n|<ul><li>- [ ] Done</li></ul>|241|[DNA Alignment](http://codeforces.com/problemset/problem/520/C)|Codeforces||Codeforces Round #295 (Div. 2) & Codeforces Round #295 (Div. 1)|3|\n|<ul><li>- [ ] Done</li></ul>|242|[Guess Your Way Out!](http://codeforces.com/problemset/problem/507/C)|Codeforces||Codeforces Round #287 (Div. 2)|3|\n|<ul><li>- [ ] Done</li></ul>|243|[Maximum Value](http://codeforces.com/problemset/problem/484/B)|Codeforces||Codeforces Round #276 (Div. 1) & Codeforces Round #276 (Div. 2)|3|\n|<ul><li>- [ ] Done</li></ul>|244|[Dreamoon and Sums](http://codeforces.com/problemset/problem/476/C)|Codeforces||Codeforces Round #272 (Div. 2) & Codeforces Round #272 (Div. 1)|3|\n|<ul><li>- [ ] Done</li></ul>|245|[Jzzhu and Chocolate](http://codeforces.com/problemset/problem/449/A)|Codeforces||Codeforces Round #257 (Div. 1) & Codeforces Round #257 (Div. 2)|3|\n|<ul><li>- [ ] Done</li></ul>|246|[Andrey and Problem](http://codeforces.com/problemset/problem/442/B)|Codeforces||Codeforces Round #253 (Div. 1) & Codeforces Round #253 (Div. 2)|3|\n|<ul><li>- [ ] Done</li></ul>|247|[Mashmokh and Tokens](http://codeforces.com/problemset/problem/415/B)|Codeforces||Codeforces Round #240 (Div. 2)|3|\n|<ul><li>- [ ] Done</li></ul>|248|[Triangle](http://codeforces.com/problemset/problem/407/A)|Codeforces||Codeforces Round #239 (Div. 1) & Codeforces Round #239 (Div. 2)|3|\n|<ul><li>- [ ] Done</li></ul>|249|[Unusual Product](http://codeforces.com/problemset/problem/405/C)|Codeforces||Codeforces Round #238 (Div. 2) & Codeforces Round #238 (Div. 1)|3|\n|<ul><li>- [ ] Done</li></ul>|250|[Nuts](http://codeforces.com/problemset/problem/402/A)|Codeforces||Codeforces Round #236 (Div. 2)|3|\n|<ul><li>- [ ] Done</li></ul>|251|[Sereja and Contests](http://codeforces.com/problemset/problem/401/B)|Codeforces||Codeforces Round #235 (Div. 2)|3|\n|<ul><li>- [ ] Done</li></ul>|252|[Bear and Prime Numbers](http://codeforces.com/problemset/problem/385/C)|Codeforces||Codeforces Round #226 (Div. 2)|3|\n|<ul><li>- [ ] Done</li></ul>|253|[K-Periodic Array](http://codeforces.com/problemset/problem/371/A)|Codeforces||Codeforces Round #218 (Div. 2)|3|\n|<ul><li>- [ ] Done</li></ul>|254|[Valera and Contest](http://codeforces.com/problemset/problem/369/B)|Codeforces||Codeforces Round #216 (Div. 2)|3|\n|<ul><li>- [ ] Done</li></ul>|255|[Levko and Permutation](http://codeforces.com/problemset/problem/361/B)|Codeforces||Codeforces Round #210 (Div. 2)|3|\n|<ul><li>- [ ] Done</li></ul>|256|[Permutation](http://codeforces.com/problemset/problem/359/B)|Codeforces||Codeforces Round #209 (Div. 2)|3|\n|<ul><li>- [ ] Done</li></ul>|257|[Vasya and Robot](http://codeforces.com/problemset/problem/354/A)|Codeforces||Codeforces Round #206 (Div. 1) & Codeforces Round #206 (Div. 2)|3|\n|<ul><li>- [ ] Done</li></ul>|258|[Quiz](http://codeforces.com/problemset/problem/337/C)|Codeforces||Codeforces Round #196 (Div. 2) & Codeforces Round #196 (Div. 1)|3|\n|<ul><li>- [ ] Done</li></ul>|259|[Routine Problem](http://codeforces.com/problemset/problem/337/B)|Codeforces||Codeforces Round #196 (Div. 2)|3|\n|<ul><li>- [ ] Done</li></ul>|260|[Pythagorean Theorem II](http://codeforces.com/problemset/problem/304/A)|Codeforces||Codeforces Round #183 (Div. 2)|3|\n|<ul><li>- [ ] Done</li></ul>|261|[Lucky Permutation Triple](http://codeforces.com/problemset/problem/303/A)|Codeforces||Codeforces Round #183 (Div. 1) & Codeforces Round #183 (Div. 2)|3|\n|<ul><li>- [ ] Done</li></ul>|262|[XOR and OR](http://codeforces.com/problemset/problem/282/C)|Codeforces||Codeforces Round #173 (Div. 2)|3|\n|<ul><li>- [ ] Done</li></ul>|263|[Little Girl and Maximum XOR](http://codeforces.com/problemset/problem/276/D)|Codeforces||Codeforces Round #169 (Div. 2)|3|\n|<ul><li>- [ ] Done</li></ul>|264|[Common Divisors](http://codeforces.com/problemset/problem/182/D)|Codeforces||Codeforces Round #117 (Div. 2)|3|\n|<ul><li>- [ ] Done</li></ul>|265|[Robbers' watch](http://codeforces.com/problemset/problem/685/A)|Codeforces||Codeforces Round #359 (Div. 1) & Codeforces Round #359 (Div. 2)|3|\n|<ul><li>- [ ] Done</li></ul>|266|[Do you want a date?](http://codeforces.com/problemset/problem/809/A)|Codeforces||Codeforces Round #415 (Div. 1) & Codeforces Round #415 (Div. 2)|3|\n|<ul><li>- [ ] Done</li></ul>|267|[Arpa's loud Owf and Mehrdad's evil plan](http://codeforces.com/problemset/problem/741/A)|Codeforces||Codeforces Round #383 (Div. 1) & Codeforces Round #383 (Div. 2)|3|\n|<ul><li>- [ ] Done</li></ul>|268|[The Meaningless Game](http://codeforces.com/problemset/problem/833/A)|Codeforces||Codeforces Round #426 (Div. 1) & Codeforces Round #426 (Div. 2)|3|\n|<ul><li>- [ ] Done</li></ul>|269|[Arpa and an exam about geometry](http://codeforces.com/problemset/problem/851/B)|Codeforces||Codeforces Round #432 (Div. 2, based on IndiaHacks Final Round 2017)|3|\n|<ul><li>- [ ] Done</li></ul>|270|[Memory and De-Evolution](http://codeforces.com/problemset/problem/712/C)|Codeforces||Codeforces Round #370 (Div. 2)|3|\n|<ul><li>- [ ] Done</li></ul>|271|[Masha and geometric depression](http://codeforces.com/problemset/problem/789/B)|Codeforces||Codeforces Round #407 (Div. 2)|3|\n|<ul><li>- [ ] Done</li></ul>|272|[Simple Arithmetics](https://icpcarchive.ecs.baylor.edu/index.php?option=onlinejudge&page=show_problem&problem=154)|Live Archive|2000|Europe - Central|3|\n|<ul><li>- [ ] Done</li></ul>|273|[Year of University Entrance](http://codeforces.com/problemset/problem/769/A)|Codeforces||VK Cup 2017 - Qualification 1|3|\n|<ul><li>- [ ] Done</li></ul>|274|[Flying Saucer Segments](http://codeforces.com/problemset/problem/226/A)|Codeforces||Codeforces Round #140 (Div. 1) & Codeforces Round #140 (Div. 2)|4|\n|<ul><li>- [ ] Done</li></ul>|275|[Olympic Medal](http://codeforces.com/problemset/problem/215/B)|Codeforces||Codeforces Round #132 (Div. 2)|4|\n|<ul><li>- [ ] Done</li></ul>|276|[About Bacteria](http://codeforces.com/problemset/problem/198/A)|Codeforces||Codeforces Round #125 (Div. 1) & Codeforces Round #125 (Div. 2)|4|\n|<ul><li>- [ ] Done</li></ul>|277|[Limit](http://codeforces.com/problemset/problem/197/B)|Codeforces||Codeforces Round #124 (Div. 2)|4|\n|<ul><li>- [ ] Done</li></ul>|278|[Plate Game](http://codeforces.com/problemset/problem/197/A)|Codeforces||Codeforces Round #124 (Div. 2)|4|\n|<ul><li>- [ ] Done</li></ul>|279|[After Training](http://codeforces.com/problemset/problem/195/B)|Codeforces||Codeforces Round #123 (Div. 2)|4|\n|<ul><li>- [ ] Done</li></ul>|280|[Square](http://codeforces.com/problemset/problem/194/B)|Codeforces||Codeforces Round #122 (Div. 2)|4|\n|<ul><li>- [ ] Done</li></ul>|281|[Counting Rhombi](http://codeforces.com/problemset/problem/189/B)|Codeforces||Codeforces Round #119 (Div. 2)|4|\n|<ul><li>- [ ] Done</li></ul>|282|[Find Pair](http://codeforces.com/problemset/problem/160/C)|Codeforces||Codeforces Round #111 (Div. 2)|4|\n|<ul><li>- [ ] Done</li></ul>|283|[Colliders](http://codeforces.com/problemset/problem/154/B)|Codeforces||Codeforces Round #109 (Div. 1) & Codeforces Round #109 (Div. 2)|4|\n|<ul><li>- [ ] Done</li></ul>|284|[Quantity of Strings](http://codeforces.com/problemset/problem/150/B)|Codeforces||Codeforces Round #107 (Div. 1) & Codeforces Round #107 (Div. 2)|4|\n|<ul><li>- [ ] Done</li></ul>|285|[Division into Teams](http://codeforces.com/problemset/problem/149/C)|Codeforces||Codeforces Round #106 (Div. 2)|4|\n|<ul><li>- [ ] Done</li></ul>|286|[Bag of mice](http://codeforces.com/problemset/problem/148/D)|Codeforces||Codeforces Round #105 (Div. 2)|4|\n|<ul><li>- [ ] Done</li></ul>|287|[Escape](http://codeforces.com/problemset/problem/148/B)|Codeforces||Codeforces Round #105 (Div. 2)|4|\n|<ul><li>- [ ] Done</li></ul>|288|[Hopscotch](http://codeforces.com/problemset/problem/141/B)|Codeforces||Codeforces Round #101 (Div. 2)|4|\n|<ul><li>- [ ] Done</li></ul>|289|[Winnie-the-Pooh and honey](http://codeforces.com/problemset/problem/120/C)|Codeforces||School Regional Team Contest, Saratov, 2011|4|\n|<ul><li>- [ ] Done</li></ul>|290|[Elevator](http://codeforces.com/problemset/problem/120/A)|Codeforces||School Regional Team Contest, Saratov, 2011|4|\n|<ul><li>- [ ] Done</li></ul>|291|[Petya and Square](http://codeforces.com/problemset/problem/112/B)|Codeforces||Codeforces Beta Round #85 (Div. 2 Only)|4|\n|<ul><li>- [ ] Done</li></ul>|292|[Binary Number](http://codeforces.com/problemset/problem/92/B)|Codeforces||Codeforces Beta Round #75 (Div. 2 Only)|4|\n|<ul><li>- [ ] Done</li></ul>|293|[Cableway](http://codeforces.com/problemset/problem/90/A)|Codeforces||Codeforces Beta Round #74 (Div. 2 Only)|4|\n|<ul><li>- [ ] Done</li></ul>|294|[Trains](http://codeforces.com/problemset/problem/87/A)|Codeforces||Codeforces Beta Round #73 (Div. 1 Only) & Codeforces Beta Round #73 (Div. 2 Only)|4|\n|<ul><li>- [ ] Done</li></ul>|295|[Magical Array](http://codeforces.com/problemset/problem/83/A)|Codeforces||Codeforces Beta Round #72 (Div. 1 Only) & Codeforces Beta Round #72 (Div. 2 Only)|4|\n|<ul><li>- [ ] Done</li></ul>|296|[Depression](http://codeforces.com/problemset/problem/80/B)|Codeforces||Codeforces Beta Round #69 (Div. 2 Only)|4|\n|<ul><li>- [ ] Done</li></ul>|297|[Round Table Knights](http://codeforces.com/problemset/problem/71/C)|Codeforces||Codeforces Beta Round #65 (Div. 2)|4|\n|<ul><li>- [ ] Done</li></ul>|298|[Progress Bar](http://codeforces.com/problemset/problem/71/B)|Codeforces||Codeforces Beta Round #65 (Div. 2)|4|\n|<ul><li>- [ ] Done</li></ul>|299|[Cookies](http://codeforces.com/problemset/problem/70/A)|Codeforces||Codeforces Beta Round #64|4|\n|<ul><li>- [ ] Done</li></ul>|300|[A Student's Dream](http://codeforces.com/problemset/problem/62/A)|Codeforces||Codeforces Beta Round #58|4|\n|<ul><li>- [ ] Done</li></ul>|301|[Weird Fence](https://uva.onlinejudge.org/index.php?option=onlinejudge&page=show_problem&problem=2229)|UVA|||4|\n|<ul><li>- [ ] Done</li></ul>|302|[Face the mate](http://www.spoj.com/problems/FACENEMY/)|SPOJ|||4|\n|<ul><li>- [ ] Done</li></ul>|303|[Rebus](http://codeforces.com/problemset/problem/663/A)|Codeforces||Codeforces Round #347 (Div. 1) & Codeforces Round #347 (Div. 2)|4|\n|<ul><li>- [ ] Done</li></ul>|304|[Mischievous Mess Makers](http://codeforces.com/problemset/problem/645/B)|Codeforces||CROC 2016 - Elimination Round|4|\n|<ul><li>- [ ] Done</li></ul>|305|[Forecast](http://codeforces.com/problemset/problem/630/N)|Codeforces||Experimental Educational Round: VolBIT Formulas Blitz|4|\n|<ul><li>- [ ] Done</li></ul>|306|[Indivisibility](http://codeforces.com/problemset/problem/630/K)|Codeforces||Experimental Educational Round: VolBIT Formulas Blitz|4|\n|<ul><li>- [ ] Done</li></ul>|307|[XOR Equation](http://codeforces.com/problemset/problem/627/A)|Codeforces||8VC Venture Cup 2016 - Final Round|4|\n|<ul><li>- [ ] Done</li></ul>|308|[Multipliers](http://codeforces.com/problemset/problem/615/D)|Codeforces||Codeforces Round #338 (Div. 2)|4|\n|<ul><li>- [ ] Done</li></ul>|309|[Spongebob and Squares](http://codeforces.com/problemset/problem/599/D)|Codeforces||Codeforces Round #332 (Div. 2)|4|\n|<ul><li>- [ ] Done</li></ul>|310|[Divisibility](http://codeforces.com/problemset/problem/597/A)|Codeforces||Testing Round #12|4|\n|<ul><li>- [ ] Done</li></ul>|311|[Pasha and Phone](http://codeforces.com/problemset/problem/595/B)|Codeforces||Codeforces Round #330 (Div. 2)|4|\n|<ul><li>- [ ] Done</li></ul>|312|[The Big Race](http://codeforces.com/problemset/problem/592/C)|Codeforces||Codeforces Round #328 (Div. 2)|4|\n|<ul><li>- [ ] Done</li></ul>|313|[Three Logos](http://codeforces.com/problemset/problem/581/D)|Codeforces||Codeforces Round #322 (Div. 2)|4|\n|<ul><li>- [ ] Done</li></ul>|314|[Gerald and Giant Chess](http://codeforces.com/problemset/problem/559/C)|Codeforces||Codeforces Round #313 (Div. 1) & Codeforces Round #313 (Div. 2)|4|\n|<ul><li>- [ ] Done</li></ul>|315|[Vanya and Triangles](http://codeforces.com/problemset/problem/552/D)|Codeforces||Codeforces Round #308 (Div. 2)|4|\n|<ul><li>- [ ] Done</li></ul>|316|[Tavas and Karafs](http://codeforces.com/problemset/problem/535/C)|Codeforces||Codeforces Round #299 (Div. 2) & Codeforces Round #299 (Div. 1)|4|\n|<ul><li>- [ ] Done</li></ul>|317|[Permutations](http://codeforces.com/problemset/problem/513/B2)|Codeforces||Rockethon 2015|4|\n|<ul><li>- [ ] Done</li></ul>|318|[Fox And Jumping](http://codeforces.com/problemset/problem/510/D)|Codeforces||Codeforces Round #290 (Div. 2) & Codeforces Round #290 (Div. 1)|4|\n|<ul><li>- [ ] Done</li></ul>|319|[Vanya and Computer Game](http://codeforces.com/problemset/problem/492/D)|Codeforces||Codeforces Round #280 (Div. 2)|4|\n|<ul><li>- [ ] Done</li></ul>|320|[Friends and Presents](http://codeforces.com/problemset/problem/483/B)|Codeforces||Codeforces Round #275 (Div. 2)|4|\n|<ul><li>- [ ] Done</li></ul>|321|[Dreamoon and Sets](http://codeforces.com/problemset/problem/476/D)|Codeforces||Codeforces Round #272 (Div. 2) & Codeforces Round #272 (Div. 1)|4|\n|<ul><li>- [ ] Done</li></ul>|322|[MUH and House of Cards](http://codeforces.com/problemset/problem/471/C)|Codeforces||Codeforces Round #269 (Div. 2)|4|\n|<ul><li>- [ ] Done</li></ul>|323|[Wonder Room](http://codeforces.com/problemset/problem/466/B)|Codeforces||Codeforces Round #266 (Div. 2)|4|\n|<ul><li>- [ ] Done</li></ul>|324|[Count Good Substrings](http://codeforces.com/problemset/problem/451/D)|Codeforces||Codeforces Round #258 (Div. 2)|4|\n|<ul><li>- [ ] Done</li></ul>|325|[Predict Outcome of the Game](http://codeforces.com/problemset/problem/451/C)|Codeforces||Codeforces Round #258 (Div. 2)|4|\n|<ul><li>- [ ] Done</li></ul>|326|[DZY Loves Physics](http://codeforces.com/problemset/problem/444/A)|Codeforces||Codeforces Round #254 (Div. 1) & Codeforces Round #254 (Div. 2)|4|\n|<ul><li>- [ ] Done</li></ul>|327|[Om Nom and Spiders](http://codeforces.com/problemset/problem/436/B)|Codeforces||Zepto Code Rush 2014|4|\n|<ul><li>- [ ] Done</li></ul>|328|[Magic Formulas](http://codeforces.com/problemset/problem/424/C)|Codeforces||Codeforces Round #242 (Div. 2)|4|\n|<ul><li>- [ ] Done</li></ul>|329|[Toy Sum](http://codeforces.com/problemset/problem/405/D)|Codeforces||Codeforces Round #238 (Div. 2) & Codeforces Round #238 (Div. 1)|4|\n|<ul><li>- [ ] Done</li></ul>|330|[Marathon](http://codeforces.com/problemset/problem/404/B)|Codeforces||Codeforces Round #237 (Div. 2)|4|\n|<ul><li>- [ ] Done</li></ul>|331|[Inna and Huge Candy Matrix](http://codeforces.com/problemset/problem/400/C)|Codeforces||Codeforces Round #234 (Div. 2)|4|\n|<ul><li>- [ ] Done</li></ul>|332|[Divisible by Seven](http://codeforces.com/problemset/problem/375/A)|Codeforces||Codeforces Round #221 (Div. 1) & Codeforces Round #221 (Div. 2)|4|\n|<ul><li>- [ ] Done</li></ul>|333|[Two Semiknights Meet](http://codeforces.com/problemset/problem/362/A)|Codeforces||Codeforces Round #212 (Div. 2)|4|\n|<ul><li>- [ ] Done</li></ul>|334|[Pair of Numbers](http://codeforces.com/problemset/problem/359/D)|Codeforces||Codeforces Round #209 (Div. 2)|4|\n|<ul><li>- [ ] Done</li></ul>|335|[Find Maximum](http://codeforces.com/problemset/problem/353/C)|Codeforces||Codeforces Round #205 (Div. 2)|4|\n|<ul><li>- [ ] Done</li></ul>|336|[Jeff and Rounding](http://codeforces.com/problemset/problem/351/A)|Codeforces||Codeforces Round #204 (Div. 1) & Codeforces Round #204 (Div. 2)|4|\n|<ul><li>- [ ] Done</li></ul>|337|[Tourist Problem](http://codeforces.com/problemset/problem/340/C)|Codeforces||Codeforces Round #198 (Div. 2) & Codeforces Round #198 (Div. 1)|4|\n|<ul><li>- [ ] Done</li></ul>|338|[Magic Five](http://codeforces.com/problemset/problem/327/C)|Codeforces||Codeforces Round #191 (Div. 2)|4|\n|<ul><li>- [ ] Done</li></ul>|339|[Ciel and Robot](http://codeforces.com/problemset/problem/321/A)|Codeforces||Codeforces Round #190 (Div. 1) & Codeforces Round #190 (Div. 2)|4|\n|<ul><li>- [ ] Done</li></ul>|340|[Pipeline](http://codeforces.com/problemset/problem/287/B)|Codeforces||Codeforces Round #176 (Div. 2)|4|\n|<ul><li>- [ ] Done</li></ul>|341|[Lucky Permutation](http://codeforces.com/problemset/problem/286/A)|Codeforces||Codeforces Round #176 (Div. 1) & Codeforces Round #176 (Div. 2)|4|\n|<ul><li>- [ ] Done</li></ul>|342|[Dima and Sequence](http://codeforces.com/problemset/problem/272/B)|Codeforces||Codeforces Round #167 (Div. 2)|4|\n|<ul><li>- [ ] Done</li></ul>|343|[Magical Boxes](http://codeforces.com/problemset/problem/269/A)|Codeforces||Codeforces Round #165 (Div. 1) & Codeforces Round #165 (Div. 2)|4|\n|<ul><li>- [ ] Done</li></ul>|344|[Subtractions](http://codeforces.com/problemset/problem/267/A)|Codeforces||Codeforces Testing Round #5|4|\n|<ul><li>- [ ] Done</li></ul>|345|[View Angle](http://codeforces.com/problemset/problem/257/C)|Codeforces||Codeforces Round #159 (Div. 2)|4|\n|<ul><li>- [ ] Done</li></ul>|346|[Chilly Willy](http://codeforces.com/problemset/problem/248/B)|Codeforces||Codeforces Round #152 (Div. 2)|4|\n|<ul><li>- [ ] Done</li></ul>|347|[Hometask](http://codeforces.com/problemset/problem/214/B)|Codeforces||Codeforces Round #131 (Div. 2)|4|\n|<ul><li>- [ ] Done</li></ul>|348|[Ancient Berland Circus](http://codeforces.com/problemset/problem/1/C)|Codeforces||Codeforces Beta Round #1|4|\n|<ul><li>- [ ] Done</li></ul>|349|[Remainders Game](http://codeforces.com/problemset/problem/687/B)|Codeforces||Codeforces Round #360 (Div. 1) & Codeforces Round #360 (Div. 2)|4|\n|<ul><li>- [ ] Done</li></ul>|350|[Cylinder](https://uva.onlinejudge.org/index.php?option=onlinejudge&page=show_problem&problem=2173)|UVA|||4|\n|<ul><li>- [ ] Done</li></ul>|351|[As Fast As Possible](http://codeforces.com/problemset/problem/700/A)|Codeforces||Codeforces Round #364 (Div. 1) & Codeforces Round #364 (Div. 2)|4|\n|<ul><li>- [ ] Done</li></ul>|352|[Mike and Chocolate Thieves](http://codeforces.com/problemset/problem/689/C)|Codeforces||Codeforces Round #361 (Div. 2)|4|\n|<ul><li>- [ ] Done</li></ul>|353|[The Intriguing Obsession](http://codeforces.com/problemset/problem/869/C)|Codeforces||Codeforces Round #439 (Div. 2)|4|\n|<ul><li>- [ ] Done</li></ul>|354|[Ralph And His Magic Field](http://codeforces.com/problemset/problem/894/B)|Codeforces||Codeforces Round #447 (Div. 2)|4|\n|<ul><li>- [ ] Done</li></ul>|355|[Directed Roads](http://codeforces.com/problemset/problem/711/D)|Codeforces||Codeforces Round #369 (Div. 2)|4|\n|<ul><li>- [ ] Done</li></ul>|356|[Marco and GCD Sequence](http://codeforces.com/problemset/problem/894/C)|Codeforces||Codeforces Round #447 (Div. 2)|4|\n|<ul><li>- [ ] Done</li></ul>|357|[Ilya And The Tree](http://codeforces.com/problemset/problem/842/C)|Codeforces||Codeforces Round #430 (Div. 2)|4|\n|<ul><li>- [ ] Done</li></ul>|358|[Alternating Sum](http://codeforces.com/problemset/problem/963/A)|Codeforces||Tinkoff Internship Warmup Round 2018 and Codeforces Round #475 (Div. 1) & Tinkoff Internship Warmup Round 2018 and Codeforces Round #475 (Div. 2)|4|\n|<ul><li>- [ ] Done</li></ul>|359|[Not Wool Sequences](http://codeforces.com/problemset/problem/238/A)|Codeforces||Codeforces Round #148 (Div. 1) & Codeforces Round #148 (Div. 2)|5|\n|<ul><li>- [ ] Done</li></ul>|360|[Clear Symmetry](http://codeforces.com/problemset/problem/201/A)|Codeforces||Codeforces Round #127 (Div. 1) & Codeforces Round #127 (Div. 2)|5|\n|<ul><li>- [ ] Done</li></ul>|361|[Rock-Paper-Scissors](http://codeforces.com/problemset/problem/173/A)|Codeforces||Croc Champ 2012 - Round 1|5|\n|<ul><li>- [ ] Done</li></ul>|362|[Help Farmer](http://codeforces.com/problemset/problem/142/A)|Codeforces||Codeforces Round #102 (Div. 1) & Codeforces Round #102 (Div. 2)|5|\n|<ul><li>- [ ] Done</li></ul>|363|[Rectangle and Square](http://codeforces.com/problemset/problem/135/B)|Codeforces||Codeforces Beta Round #97 (Div. 1) & Codeforces Beta Round #97 (Div. 2)|5|\n|<ul><li>- [ ] Done</li></ul>|364|[Measuring Lengths in Baden](http://codeforces.com/problemset/problem/125/A)|Codeforces||Codeforces Testing Round #2|5|\n|<ul><li>- [ ] Done</li></ul>|365|[Elevator](http://codeforces.com/problemset/problem/117/A)|Codeforces||Codeforces Beta Round #88|5|\n|<ul><li>- [ ] Done</li></ul>|366|[Lucky Tree](http://codeforces.com/problemset/problem/109/C)|Codeforces||Codeforces Beta Round #84 (Div. 1 Only) & Codeforces Beta Round #84 (Div. 2 Only)|5|\n|<ul><li>- [ ] Done</li></ul>|367|[Datatypes](http://codeforces.com/problemset/problem/108/B)|Codeforces||Codeforces Beta Round #83 (Div. 2 Only)|5|\n|<ul><li>- [ ] Done</li></ul>|368|[Friends](http://codeforces.com/problemset/problem/94/B)|Codeforces||Codeforces Beta Round #76 (Div. 2 Only)|5|\n|<ul><li>- [ ] Done</li></ul>|369|[Colorful Field](http://codeforces.com/problemset/problem/79/B)|Codeforces||Codeforces Beta Round #71|5|\n|<ul><li>- [ ] Done</li></ul>|370|[Falling Anvils](http://codeforces.com/problemset/problem/77/B)|Codeforces||Codeforces Beta Round #69 (Div. 1 Only) & Codeforces Beta Round #69 (Div. 2 Only)|5|\n|<ul><li>- [ ] Done</li></ul>|371|[Petya and His Friends](http://codeforces.com/problemset/problem/66/D)|Codeforces||Codeforces Beta Round #61 (Div. 2)|5|\n|<ul><li>- [ ] Done</li></ul>|372|[Flea travel](http://codeforces.com/problemset/problem/55/A)|Codeforces||Codeforces Beta Round #51|5|\n|<ul><li>- [ ] Done</li></ul>|373|[Sum](http://codeforces.com/problemset/problem/49/B)|Codeforces||Codeforces Beta Round #46 (Div. 2)|5|\n|<ul><li>- [ ] Done</li></ul>|374|[Find Color](http://codeforces.com/problemset/problem/40/A)|Codeforces||Codeforces Beta Round #39|5|\n|<ul><li>- [ ] Done</li></ul>|375|[Cubical Planet](http://codeforces.com/problemset/problem/39/D)|Codeforces||School Team Contest #1 (Winter Computer School 2010/11)|5|\n|<ul><li>- [ ] Done</li></ul>|376|[Chess](http://codeforces.com/problemset/problem/38/B)|Codeforces||School Personal Contest #1 (Winter Computer School 2010/11) - Codeforces Beta Round #38 (ACM-ICPC Rules)|5|\n|<ul><li>- [ ] Done</li></ul>|377|[Accounting](http://codeforces.com/problemset/problem/30/A)|Codeforces||Codeforces Beta Round #30 (Codeforces format)|5|\n|<ul><li>- [ ] Done</li></ul>|378|[Equation](http://codeforces.com/problemset/problem/20/B)|Codeforces||Codeforces Alpha Round #20 (Codeforces format)|5|\n|<ul><li>- [ ] Done</li></ul>|379|[Four Segments](http://codeforces.com/problemset/problem/14/C)|Codeforces||Codeforces Beta Round #14 (Div. 2)|5|\n|<ul><li>- [ ] Done</li></ul>|380|[Jumping Jack](http://codeforces.com/problemset/problem/11/B)|Codeforces||Codeforces Beta Round #11|5|\n|<ul><li>- [ ] Done</li></ul>|381|[Line](http://codeforces.com/problemset/problem/7/C)|Codeforces||Codeforces Beta Round #7|5|\n|<ul><li>- [ ] Done</li></ul>|382|[N-ARY TREE](http://www.spoj.com/problems/NARYTREE/)|SPOJ|||5|\n|<ul><li>- [ ] Done</li></ul>|383|[Careful teacher](https://uva.onlinejudge.org/index.php?option=onlinejudge&page=show_problem&problem=3891)|UVA|||5|\n|<ul><li>- [ ] Done</li></ul>|384|[Fancy Number](http://codeforces.com/problemset/problem/118/C)|Codeforces||Codeforces Beta Round #89 (Div. 2)|5|\n|<ul><li>- [ ] Done</li></ul>|385|[Fibonacci-ish](http://codeforces.com/problemset/problem/633/D)|Codeforces||Manthan, Codefest 16|5|\n|<ul><li>- [ ] Done</li></ul>|386|[Moodular Arithmetic](http://codeforces.com/problemset/problem/603/B)|Codeforces||Codeforces Round #334 (Div. 1) & Codeforces Round #334 (Div. 2)|5|\n|<ul><li>- [ ] Done</li></ul>|387|[Chip 'n Dale Rescue Rangers](http://codeforces.com/problemset/problem/590/B)|Codeforces||Codeforces Round #327 (Div. 1) & Codeforces Round #327 (Div. 2)|5|\n|<ul><li>- [ ] Done</li></ul>|388|[Lengthening Sticks](http://codeforces.com/problemset/problem/571/A)|Codeforces||Codeforces Round #317 [AimFund Thanks-Round] (Div. 1) & Codeforces Round #317 [AimFund Thanks-Round] (Div. 2)|5|\n|<ul><li>- [ ] Done</li></ul>|389|[Symmetric and Transitive](http://codeforces.com/problemset/problem/568/B)|Codeforces||Codeforces Round #315 (Div. 1) & Codeforces Round #315 (Div. 2)|5|\n|<ul><li>- [ ] Done</li></ul>|390|[Clique in the Divisibility Graph](http://codeforces.com/problemset/problem/566/F)|Codeforces||VK Cup 2015 - Finals, online mirror|5|\n|<ul><li>- [ ] Done</li></ul>|391|[Vitaly and Cycle](http://codeforces.com/problemset/problem/557/D)|Codeforces||Codeforces Round #311 (Div. 2)|5|\n|<ul><li>- [ ] Done</li></ul>|392|[Kyoya and Permutation](http://codeforces.com/problemset/problem/553/B)|Codeforces||Codeforces Round #309 (Div. 1) & Codeforces Round #309 (Div. 2)|5|\n|<ul><li>- [ ] Done</li></ul>|393|[Degenerate Matrix](http://codeforces.com/problemset/problem/549/H)|Codeforces||Looksery Cup 2015|5|\n|<ul><li>- [ ] Done</li></ul>|394|[Mike and Frog](http://codeforces.com/problemset/problem/547/A)|Codeforces||Codeforces Round #305 (Div. 1) & Codeforces Round #305 (Div. 2)|5|\n|<ul><li>- [ ] Done</li></ul>|395|[Soldier and Traveling](http://codeforces.com/problemset/problem/546/E)|Codeforces||Codeforces Round #304 (Div. 2)|5|\n|<ul><li>- [ ] Done</li></ul>|396|[Board Game](http://codeforces.com/problemset/problem/533/C)|Codeforces||VK Cup 2015 - Round 2 (unofficial online mirror, Div. 1 only)|5|\n|<ul><li>- [ ] Done</li></ul>|397|[Om Nom and Candies](http://codeforces.com/problemset/problem/526/C)|Codeforces||ZeptoLab Code Rush 2015|5|\n|<ul><li>- [ ] Done</li></ul>|398|[Pretty Song](http://codeforces.com/problemset/problem/509/E)|Codeforces||Codeforces Round #289 (Div. 2, ACM ICPC Rules)|5|\n|<ul><li>- [ ] Done</li></ul>|399|[Chocolate](http://codeforces.com/problemset/problem/490/D)|Codeforces||Codeforces Round #279 (Div. 2)|5|\n|<ul><li>- [ ] Done</li></ul>|400|[Valid Sets](http://codeforces.com/problemset/problem/486/D)|Codeforces||Codeforces Round #277 (Div. 2)|5|\n|<ul><li>- [ ] Done</li></ul>|401|[CGCDSSQ](http://codeforces.com/problemset/problem/475/D)|Codeforces||Bayan 2015 Contest Warm Up|5|\n|<ul><li>- [ ] Done</li></ul>|402|[Ryouko's Memory Note](http://codeforces.com/problemset/problem/433/C)|Codeforces||Codeforces Round #248 (Div. 2) & Codeforces Round #248 (Div. 1)|5|\n|<ul><li>- [ ] Done</li></ul>|403|[Elimination](http://codeforces.com/problemset/problem/417/A)|Codeforces||RCC 2014 Warmup (Div. 2)|5|\n|<ul><li>- [ ] Done</li></ul>|404|[Upgrading Array](http://codeforces.com/problemset/problem/402/D)|Codeforces||Codeforces Round #236 (Div. 2) & Codeforces Round #236 (Div. 1)|5|\n|<ul><li>- [ ] Done</li></ul>|405|[Fox and Minimal path](http://codeforces.com/problemset/problem/388/B)|Codeforces||Codeforces Round #228 (Div. 1) & Codeforces Round #228 (Div. 2)|5|\n|<ul><li>- [ ] Done</li></ul>|406|[Making Sequences is Fun](http://codeforces.com/problemset/problem/373/B)|Codeforces||Codeforces Round #219 (Div. 2)|5|\n|<ul><li>- [ ] Done</li></ul>|407|[Prime Number](http://codeforces.com/problemset/problem/359/C)|Codeforces||Codeforces Round #209 (Div. 2)|5|\n|<ul><li>- [ ] Done</li></ul>|408|[Xenia and Hamming](http://codeforces.com/problemset/problem/356/B)|Codeforces||Codeforces Round #207 (Div. 1) & Codeforces Round #207 (Div. 2)|5|\n|<ul><li>- [ ] Done</li></ul>|409|[Two Heaps](http://codeforces.com/problemset/problem/353/B)|Codeforces||Codeforces Round #205 (Div. 2)|5|\n|<ul><li>- [ ] Done</li></ul>|410|[Iahub and Permutations](http://codeforces.com/problemset/problem/340/E)|Codeforces||Codeforces Round #198 (Div. 2) & Codeforces Round #198 (Div. 1)|5|\n|<ul><li>- [ ] Done</li></ul>|411|[Malek Dance Club](http://codeforces.com/problemset/problem/319/A)|Codeforces||Codeforces Round #189 (Div. 1) & Codeforces Round #189 (Div. 2)|5|\n|<ul><li>- [ ] Done</li></ul>|412|[Special Task](http://codeforces.com/problemset/problem/316/A2)|Codeforces||ABBYY Cup 3.0|5|\n|<ul><li>- [ ] Done</li></ul>|413|[Continued Fractions](http://codeforces.com/problemset/problem/305/B)|Codeforces||Codeforces Round #184 (Div. 2)|5|\n|<ul><li>- [ ] Done</li></ul>|414|[Polo the Penguin and XOR operation](http://codeforces.com/problemset/problem/288/C)|Codeforces||Codeforces Round #177 (Div. 1) & Codeforces Round #177 (Div. 2)|5|\n|<ul><li>- [ ] Done</li></ul>|415|[Dima and Two Sequences](http://codeforces.com/problemset/problem/272/D)|Codeforces||Codeforces Round #167 (Div. 2) & Codeforces Round #167 (Div. 1)|5|\n|<ul><li>- [ ] Done</li></ul>|416|[Expensive Drink](https://icpcarchive.ecs.baylor.edu/index.php?option=onlinejudge&page=show_problem&problem=2028)|Live Archive|2007|Asia - Beijing|5|\n|<ul><li>- [ ] Done</li></ul>|417|[Misha and Permutations Summation](http://codeforces.com/problemset/problem/501/D)|Codeforces||Codeforces Round #285 (Div. 2) & Codeforces Round #285 (Div. 1)|5|\n|<ul><li>- [ ] Done</li></ul>|418|[Array Game](https://icpcarchive.ecs.baylor.edu/index.php?option=onlinejudge&page=show_problem&problem=2654)|Live Archive|2009|Asia - Tehran|5|\n|<ul><li>- [ ] Done</li></ul>|419|[Square Subsets](http://codeforces.com/problemset/problem/895/C)|Codeforces||Codeforces Round #448 (Div. 2)|5|\n|<ul><li>- [ ] Done</li></ul>|420|[Winter is here](http://codeforces.com/problemset/problem/839/D)|Codeforces||Codeforces Round #428 (Div. 2)|5|\n|<ul><li>- [ ] Done</li></ul>|421|[Anton and School - 2](http://codeforces.com/problemset/problem/785/D)|Codeforces||Codeforces Round #404 (Div. 2)|5|\n|<ul><li>- [ ] Done</li></ul>|422|[Hunting Digletts](https://www.urionlinejudge.com.br/judge/en/problems/view/2063)|URI|||5|\n|<ul><li>- [ ] Done</li></ul>|423|[Little Elephant and LCM](http://codeforces.com/problemset/problem/258/C)|Codeforces||Codeforces Round #157 (Div. 1) & Codeforces Round #157 (Div. 2)|6|\n|<ul><li>- [ ] Done</li></ul>|424|[Mr. Bender and Square](http://codeforces.com/problemset/problem/255/D)|Codeforces||Codeforces Round #156 (Div. 2) & Codeforces Round #156 (Div. 1)|6|\n|<ul><li>- [ ] Done</li></ul>|425|[Playing with Permutations](http://codeforces.com/problemset/problem/251/B)|Codeforces||Codeforces Round #153 (Div. 1) & Codeforces Round #153 (Div. 2)|6|\n|<ul><li>- [ ] Done</li></ul>|426|[Let's Play Osu!](http://codeforces.com/problemset/problem/235/B)|Codeforces||Codeforces Round #146 (Div. 1) & Codeforces Round #146 (Div. 2)|6|\n|<ul><li>- [ ] Done</li></ul>|427|[Table](http://codeforces.com/problemset/problem/232/B)|Codeforces||Codeforces Round #144 (Div. 1) & Codeforces Round #144 (Div. 2)|6|\n|<ul><li>- [ ] Done</li></ul>|428|[Triangles](http://codeforces.com/problemset/problem/229/C)|Codeforces||Codeforces Round #142 (Div. 1) & Codeforces Round #142 (Div. 2)|6|\n|<ul><li>- [ ] Done</li></ul>|429|[Partial Sums](http://codeforces.com/problemset/problem/223/C)|Codeforces||Codeforces Round #138 (Div. 1) & Codeforces Round #138 (Div. 2)|6|\n|<ul><li>- [ ] Done</li></ul>|430|[Hit Ball](http://codeforces.com/problemset/problem/203/D)|Codeforces||Codeforces Round #128 (Div. 2)|6|\n|<ul><li>- [ ] Done</li></ul>|431|[Guess That Car!](http://codeforces.com/problemset/problem/201/B)|Codeforces||Codeforces Round #127 (Div. 1) & Codeforces Round #127 (Div. 2)|6|\n|<ul><li>- [ ] Done</li></ul>|432|[Mushroom Scientists](http://codeforces.com/problemset/problem/185/B)|Codeforces||Codeforces Round #118 (Div. 1) & Codeforces Round #118 (Div. 2)|6|\n|<ul><li>- [ ] Done</li></ul>|433|[Mathematical Analysis Rocks!](http://codeforces.com/problemset/problem/180/F)|Codeforces||Codeforces Round #116 (Div. 2, ACM-ICPC Rules)|6|\n|<ul><li>- [ ] Done</li></ul>|434|[Problem About Equation](http://codeforces.com/problemset/problem/174/A)|Codeforces||VK Cup 2012 Round 3 (Unofficial Div. 2 Edition)|6|\n|<ul><li>- [ ] Done</li></ul>|435|[Lucky Subsequence](http://codeforces.com/problemset/problem/145/C)|Codeforces||Codeforces Round #104 (Div. 1) & Codeforces Round #104 (Div. 2)|6|\n|<ul><li>- [ ] Done</li></ul>|436|[Wallpaper](http://codeforces.com/problemset/problem/139/B)|Codeforces||Codeforces Beta Round #99 (Div. 2)|6|\n|<ul><li>- [ ] Done</li></ul>|437|[Hot Bath](http://codeforces.com/problemset/problem/126/A)|Codeforces||Codeforces Beta Round #93 (Div. 1 Only) & Codeforces Beta Round #93 (Div. 2 Only)|6|\n|<ul><li>- [ ] Done</li></ul>|438|[Doctor](http://codeforces.com/problemset/problem/83/B)|Codeforces||Codeforces Beta Round #72 (Div. 1 Only) & Codeforces Beta Round #72 (Div. 2 Only)|6|\n|<ul><li>- [ ] Done</li></ul>|439|[Average Score](http://codeforces.com/problemset/problem/81/C)|Codeforces||Yandex.Algorithm Open 2011 Qualification 1|6|\n|<ul><li>- [ ] Done</li></ul>|440|[Points](http://codeforces.com/problemset/problem/76/E)|Codeforces||All-Ukrainian School Olympiad in Informatics|6|\n|<ul><li>- [ ] Done</li></ul>|441|[The Elder Trolls IV: Oblivon](http://codeforces.com/problemset/problem/73/A)|Codeforces||Codeforces Beta Round #66|6|\n|<ul><li>- [ ] Done</li></ul>|442|[Harry Potter and Three Spells](http://codeforces.com/problemset/problem/65/A)|Codeforces||Codeforces Beta Round #60|6|\n|<ul><li>- [ ] Done</li></ul>|443|[Array](http://codeforces.com/problemset/problem/57/C)|Codeforces||Codeforces Beta Round #53|6|\n|<ul><li>- [ ] Done</li></ul>|444|[3-cycles](http://codeforces.com/problemset/problem/41/E)|Codeforces||Codeforces Beta Round #40 (Div. 2)|6|\n|<ul><li>- [ ] Done</li></ul>|445|[Flea](http://codeforces.com/problemset/problem/32/C)|Codeforces||Codeforces Beta Round #32 (Div. 2, Codeforces format)|6|\n|<ul><li>- [ ] Done</li></ul>|446|[Platforms](http://codeforces.com/problemset/problem/18/B)|Codeforces||Codeforces Beta Round #18 (Div. 2 Only)|6|\n|<ul><li>- [ ] Done</li></ul>|447|[Collision Detection](https://icpcarchive.ecs.baylor.edu/index.php?option=onlinejudge&page=show_problem&problem=4205)|Live Archive|2012|North America - Mid-Atlantic USA & North America - Southeast USA|6|\n|<ul><li>- [ ] Done</li></ul>|448|[GAMING ARENA](http://www.spoj.com/problems/GAMARENA/)|SPOJ|||6|\n|<ul><li>- [ ] Done</li></ul>|449|[ZEROES IN RANGE](http://www.spoj.com/problems/RANGEZER/)|SPOJ|||6|\n|<ul><li>- [ ] Done</li></ul>|450|[ANYTHING FOR ATTENDANCE](http://www.spoj.com/problems/DIE4MARK/)|SPOJ|||6|\n|<ul><li>- [ ] Done</li></ul>|451|[CHOCOLATES](http://www.spoj.com/problems/CHOCLATE/)|SPOJ|||6|\n|<ul><li>- [ ] Done</li></ul>|452|[CUBE ROOT](http://www.spoj.com/problems/CUBEROO2/)|SPOJ|||6|\n|<ul><li>- [ ] Done</li></ul>|453|[Parallel Expectations](https://icpcarchive.ecs.baylor.edu/index.php?option=onlinejudge&page=show_problem&problem=345)|Live Archive|2001|Asia - Tehran|6|\n|<ul><li>- [ ] Done</li></ul>|454|[International Olympiad](http://codeforces.com/problemset/problem/662/D)|Codeforces||CROC 2016 - Final Round [Private, For Onsite Finalists Only]|6|\n|<ul><li>- [ ] Done</li></ul>|455|[Bear and Polynomials](http://codeforces.com/problemset/problem/639/C)|Codeforces||VK Cup 2016 - Round 1|6|\n|<ul><li>- [ ] Done</li></ul>|456|[Longest Subsequence](http://codeforces.com/problemset/problem/632/D)|Codeforces||Educational Codeforces Round 9|6|\n|<ul><li>- [ ] Done</li></ul>|457|[A rectangle](http://codeforces.com/problemset/problem/630/E)|Codeforces||Experimental Educational Round: VolBIT Formulas Blitz|6|\n|<ul><li>- [ ] Done</li></ul>|458|[GukiZ and Binary Operations](http://codeforces.com/problemset/problem/551/D)|Codeforces||Codeforces Round #307 (Div. 2)|6|\n|<ul><li>- [ ] Done</li></ul>|459|[A Heap of Heaps](http://codeforces.com/problemset/problem/538/F)|Codeforces||Codeforces Round #300|6|\n|<ul><li>- [ ] Done</li></ul>|460|[Demiurges Play Again](http://codeforces.com/problemset/problem/538/E)|Codeforces||Codeforces Round #300|6|\n|<ul><li>- [ ] Done</li></ul>|461|[Pluses everywhere](http://codeforces.com/problemset/problem/520/E)|Codeforces||Codeforces Round #295 (Div. 2) & Codeforces Round #295 (Div. 1)|6|\n|<ul><li>- [ ] Done</li></ul>|462|[Vanya and Field](http://codeforces.com/problemset/problem/492/E)|Codeforces||Codeforces Round #280 (Div. 2)|6|\n|<ul><li>- [ ] Done</li></ul>|463|[LIS of Sequence](http://codeforces.com/problemset/problem/486/E)|Codeforces||Codeforces Round #277 (Div. 2)|6|\n|<ul><li>- [ ] Done</li></ul>|464|[Golden System](http://codeforces.com/problemset/problem/457/A)|Codeforces||MemSQL Start[c]UP 2.0 - Round 2|6|\n|<ul><li>- [ ] Done</li></ul>|465|[Magic Trick](http://codeforces.com/problemset/problem/452/C)|Codeforces||MemSQL Start[c]UP 2.0 - Round 1|6|\n|<ul><li>- [ ] Done</li></ul>|466|[Random Task](http://codeforces.com/problemset/problem/431/D)|Codeforces||Codeforces Round #247 (Div. 2)|6|\n|<ul><li>- [ ] Done</li></ul>|467|[Police Patrol](http://codeforces.com/problemset/problem/427/E)|Codeforces||Codeforces Round #244 (Div. 2)|6|\n|<ul><li>- [ ] Done</li></ul>|468|[Jeopardy!](http://codeforces.com/problemset/problem/413/C)|Codeforces||Coder-Strike 2014 - Round 2|6|\n|<ul><li>- [ ] Done</li></ul>|469|[Number Busters](http://codeforces.com/problemset/problem/382/B)|Codeforces||Codeforces Round #224 (Div. 2)|6|\n|<ul><li>- [ ] Done</li></ul>|470|[Watching Fireworks is Fun](http://codeforces.com/problemset/problem/372/C)|Codeforces||Codeforces Round #219 (Div. 1) & Codeforces Round #219 (Div. 2)|6|\n|<ul><li>- [ ] Done</li></ul>|471|[Insertion Sort](http://codeforces.com/problemset/problem/362/C)|Codeforces||Codeforces Round #212 (Div. 2)|6|\n|<ul><li>- [ ] Done</li></ul>|472|[Number Transformation II](http://codeforces.com/problemset/problem/346/C)|Codeforces||Codeforces Round #201 (Div. 1) & Codeforces Round #201 (Div. 2)|6|\n|<ul><li>- [ ] Done</li></ul>|473|[Vasily the Bear and Fly](http://codeforces.com/problemset/problem/336/B)|Codeforces||Codeforces Round #195 (Div. 2)|6|\n|<ul><li>- [ ] Done</li></ul>|474|[Stadium and Games](http://codeforces.com/problemset/problem/325/B)|Codeforces||MemSQL start[c]up Round 1|6|\n|<ul><li>- [ ] Done</li></ul>|475|[Rectangle Puzzle II](http://codeforces.com/problemset/problem/303/B)|Codeforces||Codeforces Round #183 (Div. 1) & Codeforces Round #183 (Div. 2)|6|\n|<ul><li>- [ ] Done</li></ul>|476|[Game on Tree](http://codeforces.com/problemset/problem/280/C)|Codeforces||Codeforces Round #172 (Div. 1) & Codeforces Round #172 (Div. 2)|6|\n|<ul><li>- [ ] Done</li></ul>|477|[Below the Diagonal](http://codeforces.com/problemset/problem/266/C)|Codeforces||Codeforces Round #163 (Div. 2)|6|\n|<ul><li>- [ ] Done</li></ul>|478|[Maxim and Restaurant](http://codeforces.com/problemset/problem/261/B)|Codeforces||Codeforces Round #160 (Div. 1) & Codeforces Round #160 (Div. 2)|6|\n|<ul><li>- [ ] Done</li></ul>|479|[Sum](http://codeforces.com/problemset/problem/257/D)|Codeforces||Codeforces Round #159 (Div. 2)|6|\n|<ul><li>- [ ] Done</li></ul>|480|[Party](http://codeforces.com/problemset/problem/23/B)|Codeforces||Codeforces Beta Round #23|6|\n|<ul><li>- [ ] Done</li></ul>|481|[Functions](p?ID=292)|A2 Online Judge|||6|\n|<ul><li>- [ ] Done</li></ul>|482|[Prizes](p?ID=310)|A2 Online Judge|||6|\n|<ul><li>- [ ] Done</li></ul>|483|[Karen and Test](http://codeforces.com/problemset/problem/815/B)|Codeforces||Codeforces Round #419 (Div. 1) & Codeforces Round #419 (Div. 2)|6|\n|<ul><li>- [ ] Done</li></ul>|484|[Unusual Sequences](http://codeforces.com/problemset/problem/900/D)|Codeforces||Codeforces Round #450 (Div. 2)|6|\n|<ul><li>- [ ] Done</li></ul>|485|[ZS and The Birthday Paradox](http://codeforces.com/problemset/problem/711/E)|Codeforces||Codeforces Round #369 (Div. 2)|6|\n|<ul><li>- [ ] Done</li></ul>|486|[Fibonacci 2.0](p?ID=291)|A2 Online Judge|||6|\n|<ul><li>- [ ] Done</li></ul>|487|[Design Space](https://www.urionlinejudge.com.br/judge/en/problems/view/2683)|URI|||6|\n|<ul><li>- [ ] Done</li></ul>|488|[Furlo and Rublo and Game](http://codeforces.com/problemset/problem/255/E)|Codeforces||Codeforces Round #156 (Div. 2) & Codeforces Round #156 (Div. 1)|7|\n|<ul><li>- [ ] Done</li></ul>|489|[Blackboard Fibonacci](http://codeforces.com/problemset/problem/217/B)|Codeforces||Codeforces Round #134 (Div. 1) & Codeforces Round #134 (Div. 2)|7|\n|<ul><li>- [ ] Done</li></ul>|490|[Little Elephant and Furik and Rubik](http://codeforces.com/problemset/problem/204/C)|Codeforces||Codeforces Round #129 (Div. 1) & Codeforces Round #129 (Div. 2)|7|\n|<ul><li>- [ ] Done</li></ul>|491|[Analyzing Polyline](http://codeforces.com/problemset/problem/195/D)|Codeforces||Codeforces Round #123 (Div. 2)|7|\n|<ul><li>- [ ] Done</li></ul>|492|[Pairs of Numbers](http://codeforces.com/problemset/problem/134/B)|Codeforces||Codeforces Testing Round #3|7|\n|<ul><li>- [ ] Done</li></ul>|493|[Squares](http://codeforces.com/problemset/problem/123/B)|Codeforces||Codeforces Beta Round #92 (Div. 1 Only) & Codeforces Beta Round #92 (Div. 2 Only)|7|\n|<ul><li>- [ ] Done</li></ul>|494|[Reflection](http://codeforces.com/problemset/problem/86/A)|Codeforces||Yandex.Algorithm 2011 Round 2|7|\n|<ul><li>- [ ] Done</li></ul>|495|[Plus and xor](http://codeforces.com/problemset/problem/76/D)|Codeforces||All-Ukrainian School Olympiad in Informatics|7|\n|<ul><li>- [ ] Done</li></ul>|496|[Big Maximum Sum](http://codeforces.com/problemset/problem/75/D)|Codeforces||Codeforces Beta Round #67 (Div. 2)|7|\n|<ul><li>- [ ] Done</li></ul>|497|[First Digit Law](http://codeforces.com/problemset/problem/54/C)|Codeforces||Codeforces Beta Round #50|7|\n|<ul><li>- [ ] Done</li></ul>|498|[Disposition](http://codeforces.com/problemset/problem/49/C)|Codeforces||Codeforces Beta Round #46 (Div. 2)|7|\n|<ul><li>- [ ] Done</li></ul>|499|[Repaintings](http://codeforces.com/problemset/problem/40/B)|Codeforces||Codeforces Beta Round #39|7|\n|<ul><li>- [ ] Done</li></ul>|500|[Sequence of points](http://codeforces.com/problemset/problem/24/C)|Codeforces||Codeforces Beta Round #24|7|\n|<ul><li>- [ ] Done</li></ul>|501|[Intersection](http://codeforces.com/problemset/problem/21/B)|Codeforces||Codeforces Alpha Round #21 (Codeforces format)|7|\n|<ul><li>- [ ] Done</li></ul>|502|[Laser](http://codeforces.com/problemset/problem/15/B)|Codeforces||Codeforces Beta Round #15|7|\n|<ul><li>- [ ] Done</li></ul>|503|[Follow Traffic Rules](http://codeforces.com/problemset/problem/5/D)|Codeforces||Codeforces Beta Round #5|7|\n|<ul><li>- [ ] Done</li></ul>|504|[The Water Taps](http://www.spoj.com/problems/TAPS/)|SPOJ|||7|\n|<ul><li>- [ ] Done</li></ul>|505|[On Corruption and Numbers](http://codeforces.com/problemset/problem/397/B)|Codeforces||Codeforces Round #232 (Div. 2)|7|\n|<ul><li>- [ ] Done</li></ul>|506|[Binary Table](http://codeforces.com/problemset/problem/662/C)|Codeforces||CROC 2016 - Final Round [Private, For Onsite Finalists Only]|7|\n|<ul><li>- [ ] Done</li></ul>|507|[Little Artem and Random Variable](http://codeforces.com/problemset/problem/641/D)|Codeforces||VK Cup 2016 - Round 2|7|\n|<ul><li>- [ ] Done</li></ul>|508|[Turn](http://codeforces.com/problemset/problem/630/M)|Codeforces||Experimental Educational Round: VolBIT Formulas Blitz|7|\n|<ul><li>- [ ] Done</li></ul>|509|[Simple Skewness](http://codeforces.com/problemset/problem/626/E)|Codeforces||8VC Venture Cup 2016 - Elimination Round|7|\n|<ul><li>- [ ] Done</li></ul>|510|[Rat Kwesh and Cheese](http://codeforces.com/problemset/problem/621/D)|Codeforces||Codeforces Round #341 (Div. 2)|7|\n|<ul><li>- [ ] Done</li></ul>|511|[Sum of Remainders](http://codeforces.com/problemset/problem/616/E)|Codeforces||Educational Codeforces Round 5|7|\n|<ul><li>- [ ] Done</li></ul>|512|[Hexagons](http://codeforces.com/problemset/problem/615/E)|Codeforces||Codeforces Round #338 (Div. 2)|7|\n|<ul><li>- [ ] Done</li></ul>|513|[Case of a Top Secret](http://codeforces.com/problemset/problem/555/D)|Codeforces||Codeforces Round #310 (Div. 1)|7|\n|<ul><li>- [ ] Done</li></ul>|514|[Idempotent functions](http://codeforces.com/problemset/problem/542/C)|Codeforces||VK Cup 2015 - Round 3 (unofficial online mirror, Div. 1 only)|7|\n|<ul><li>- [ ] Done</li></ul>|515|[Restoring Numbers](http://codeforces.com/problemset/problem/509/D)|Codeforces||Codeforces Round #289 (Div. 2, ACM ICPC Rules)|7|\n|<ul><li>- [ ] Done</li></ul>|516|[Hack it!](http://codeforces.com/problemset/problem/468/C)|Codeforces||Codeforces Round #268 (Div. 1) & Codeforces Round #268 (Div. 2)|7|\n|<ul><li>- [ ] Done</li></ul>|517|[Devu and Birthday Celebration](http://codeforces.com/problemset/problem/439/E)|Codeforces||Codeforces Round #251 (Div. 2)|7|\n|<ul><li>- [ ] Done</li></ul>|518|[Square Table](http://codeforces.com/problemset/problem/417/E)|Codeforces||RCC 2014 Warmup (Div. 2) & RCC 2014 Warmup (Div. 1)|7|\n|<ul><li>- [ ] Done</li></ul>|519|[Curious Array](http://codeforces.com/problemset/problem/407/C)|Codeforces||Codeforces Round #239 (Div. 1) & Codeforces Round #239 (Div. 2)|7|\n|<ul><li>- [ ] Done</li></ul>|520|[On Sum of Fractions](http://codeforces.com/problemset/problem/396/B)|Codeforces||Codeforces Round #232 (Div. 1) & Codeforces Round #232 (Div. 2)|7|\n|<ul><li>- [ ] Done</li></ul>|521|[Blocked Points](http://codeforces.com/problemset/problem/392/A)|Codeforces||Codeforces Round #230 (Div. 1) & Codeforces Round #230 (Div. 2)|7|\n|<ul><li>- [ ] Done</li></ul>|522|[Subway Innovation](http://codeforces.com/problemset/problem/371/E)|Codeforces||Codeforces Round #218 (Div. 2)|7|\n|<ul><li>- [ ] Done</li></ul>|523|[Vasily the Bear and Beautiful Strings](http://codeforces.com/problemset/problem/336/D)|Codeforces||Codeforces Round #195 (Div. 2)|7|\n|<ul><li>- [ ] Done</li></ul>|524|[Minimum Modular](http://codeforces.com/problemset/problem/303/C)|Codeforces||Codeforces Round #183 (Div. 1) & Codeforces Round #183 (Div. 2)|7|\n|<ul><li>- [ ] Done</li></ul>|525|[Empire Strikes Back](http://codeforces.com/problemset/problem/300/E)|Codeforces||Codeforces Round #181 (Div. 2)|7|\n|<ul><li>- [ ] Done</li></ul>|526|[Playlist](http://codeforces.com/problemset/problem/268/E)|Codeforces||Codeforces Round #164 (Div. 2)|7|\n|<ul><li>- [ ] Done</li></ul>|527|[Maxim and Matrix](http://codeforces.com/problemset/problem/261/C)|Codeforces||Codeforces Round #160 (Div. 1) & Codeforces Round #160 (Div. 2)|7|\n|<ul><li>- [ ] Done</li></ul>|528|[The Last Fight Between Human and AI](http://codeforces.com/problemset/problem/676/E)|Codeforces||Codeforces Round #354 (Div. 2)|7|\n|<ul><li>- [ ] Done</li></ul>|529|[Powers](https://icpcarchive.ecs.baylor.edu/index.php?option=onlinejudge&page=show_problem&problem=1025)|Live Archive|2004|Africa/Middle East - South Africa|7|\n|<ul><li>- [ ] Done</li></ul>|530|[Bamboo Partition](http://codeforces.com/problemset/problem/830/C)|Codeforces||Codeforces Round #424 (Div. 1, rated, based on VK Cup Finals) & Codeforces Round #424 (Div. 2, rated, based on VK Cup Finals)|7|\n|<ul><li>- [ ] Done</li></ul>|531|[String Mark](http://codeforces.com/problemset/problem/895/D)|Codeforces||Codeforces Round #448 (Div. 2)|7|\n|<ul><li>- [ ] Done</li></ul>|532|[Bribes](http://codeforces.com/problemset/problem/575/B)|Codeforces||Bubble Cup 8 - Finals [Online Mirror]|7|\n|<ul><li>- [ ] Done</li></ul>|533|[Little Elephant and Broken Sorting](http://codeforces.com/problemset/problem/258/D)|Codeforces||Codeforces Round #157 (Div. 1)|8|\n|<ul><li>- [ ] Done</li></ul>|534|[Anniversary](http://codeforces.com/problemset/problem/226/C)|Codeforces||Codeforces Round #140 (Div. 1) & Codeforces Round #140 (Div. 2)|8|\n|<ul><li>- [ ] Done</li></ul>|535|[Unsolvable](http://codeforces.com/problemset/problem/225/E)|Codeforces||Codeforces Round #139 (Div. 2)|8|\n|<ul><li>- [ ] Done</li></ul>|536|[Martian Luck](http://codeforces.com/problemset/problem/216/E)|Codeforces||Codeforces Round #133 (Div. 2)|8|\n|<ul><li>- [ ] Done</li></ul>|537|[Multicolored Marbles](http://codeforces.com/problemset/problem/209/A)|Codeforces||VK Cup 2012 Finals, Practice Session|8|\n|<ul><li>- [ ] Done</li></ul>|538|[Hamming Distance](http://codeforces.com/problemset/problem/193/C)|Codeforces||Codeforces Round #122 (Div. 1) & Codeforces Round #122 (Div. 2)|8|\n|<ul><li>- [ ] Done</li></ul>|539|[Headquarters](http://codeforces.com/problemset/problem/183/A)|Codeforces||Croc Champ 2012 - Final|8|\n|<ul><li>- [ ] Done</li></ul>|540|[Wizards and Numbers](http://codeforces.com/problemset/problem/167/C)|Codeforces||Codeforces Round #114 (Div. 1) & Codeforces Round #114 (Div. 2)|8|\n|<ul><li>- [ ] Done</li></ul>|541|[Smart Cheater](http://codeforces.com/problemset/problem/150/C)|Codeforces||Codeforces Round #107 (Div. 1) & Codeforces Round #107 (Div. 2)|8|\n|<ul><li>- [ ] Done</li></ul>|542|[Fibonacci Sums](http://codeforces.com/problemset/problem/126/D)|Codeforces||Codeforces Beta Round #93 (Div. 1 Only)|8|\n|<ul><li>- [ ] Done</li></ul>|543|[Plumber](http://codeforces.com/problemset/problem/115/C)|Codeforces||Codeforces Beta Round #87 (Div. 1 Only) & Codeforces Beta Round #87 (Div. 2 Only)|8|\n|<ul><li>- [ ] Done</li></ul>|544|[Vectors](http://codeforces.com/problemset/problem/101/C)|Codeforces||Codeforces Beta Round #79 (Div. 1 Only) & Codeforces Beta Round #79 (Div. 2 Only)|8|\n|<ul><li>- [ ] Done</li></ul>|545|[Numbers](http://codeforces.com/problemset/problem/83/D)|Codeforces||Codeforces Beta Round #72 (Div. 1 Only)|8|\n|<ul><li>- [ ] Done</li></ul>|546|[Capture Valerian](http://codeforces.com/problemset/problem/61/C)|Codeforces||Codeforces Beta Round #57 (Div. 2)|8|\n|<ul><li>- [ ] Done</li></ul>|547|[The Race](http://codeforces.com/problemset/problem/48/C)|Codeforces||School Personal Contest #3 (Winter Computer School 2010/11) - Codeforces Beta Round #45 (ACM-ICPC Rules)|8|\n|<ul><li>- [ ] Done</li></ul>|548|[Hyperdrive](http://codeforces.com/problemset/problem/44/D)|Codeforces||School Team Contest #2 (Winter Computer School 2010/11)|8|\n|<ul><li>- [ ] Done</li></ul>|549|[Collisions](http://codeforces.com/problemset/problem/34/E)|Codeforces||Codeforces Beta Round #34 (Div. 2)|8|\n|<ul><li>- [ ] Done</li></ul>|550|[Math Homework](p?ID=23)|A2 Online Judge|||8|\n|<ul><li>- [ ] Done</li></ul>|551|[Lannion Visit](p?ID=415)|A2 Online Judge|||8|\n|<ul><li>- [ ] Done</li></ul>|552|[Cowslip Collections](http://codeforces.com/problemset/problem/645/F)|Codeforces||CROC 2016 - Elimination Round|8|\n|<ul><li>- [ ] Done</li></ul>|553|[The Sum of the k-th Powers](http://codeforces.com/problemset/problem/622/F)|Codeforces||Educational Codeforces Round 7|8|\n|<ul><li>- [ ] Done</li></ul>|554|[Vasya and Polynomial](http://codeforces.com/problemset/problem/493/E)|Codeforces||Codeforces Round #281 (Div. 2)|8|\n|<ul><li>- [ ] Done</li></ul>|555|[Strange Sorting](http://codeforces.com/problemset/problem/484/C)|Codeforces||Codeforces Round #276 (Div. 1) & Codeforces Round #276 (Div. 2)|8|\n|<ul><li>- [ ] Done</li></ul>|556|[Bear in the Field](http://codeforces.com/problemset/problem/385/E)|Codeforces||Codeforces Round #226 (Div. 2)|8|\n|<ul><li>- [ ] Done</li></ul>|557|[Dima and Magic Guitar](http://codeforces.com/problemset/problem/366/E)|Codeforces||Codeforces Round #214 (Div. 2)|8|\n|<ul><li>- [ ] Done</li></ul>|558|[Ghd](http://codeforces.com/problemset/problem/364/D)|Codeforces||Codeforces Round #213 (Div. 1)|8|\n|<ul><li>- [ ] Done</li></ul>|559|[GCD Table](http://codeforces.com/problemset/problem/338/D)|Codeforces||Codeforces Round #196 (Div. 1)|8|\n|<ul><li>- [ ] Done</li></ul>|560|[Summer Homework](http://codeforces.com/problemset/problem/316/E3)|Codeforces||ABBYY Cup 3.0|8|\n|<ul><li>- [ ] Done</li></ul>|561|[Interval Cubing](http://codeforces.com/problemset/problem/311/D)|Codeforces||Codeforces Round #185 (Div. 1)|8|\n|<ul><li>- [ ] Done</li></ul>|562|[Morning run](http://codeforces.com/problemset/problem/309/A)|Codeforces||Croc Champ 2013 - Finals (online version, Div. 1)|8|\n|<ul><li>- [ ] Done</li></ul>|563|[Olya and Graph](http://codeforces.com/problemset/problem/305/D)|Codeforces||Codeforces Round #184 (Div. 2)|8|\n|<ul><li>- [ ] Done</li></ul>|564|[Cube Problem](http://codeforces.com/problemset/problem/293/C)|Codeforces||Croc Champ 2013 - Round 2|8|\n|<ul><li>- [ ] Done</li></ul>|565|[Ladies' Shop](http://codeforces.com/problemset/problem/286/E)|Codeforces||Codeforces Round #176 (Div. 1)|8|\n|<ul><li>- [ ] Done</li></ul>|566|[Positions in Permutations](http://codeforces.com/problemset/problem/285/E)|Codeforces||Codeforces Round #175 (Div. 2)|8|\n|<ul><li>- [ ] Done</li></ul>|567|[Cow Tennis Tournament](http://codeforces.com/problemset/problem/283/E)|Codeforces||Codeforces Round #174 (Div. 1)|8|\n|<ul><li>- [ ] Done</li></ul>|568|[Cows and Cool Sequences](http://codeforces.com/problemset/problem/283/D)|Codeforces||Codeforces Round #174 (Div. 1)|8|\n|<ul><li>- [ ] Done</li></ul>|569|[Three Horses](http://codeforces.com/problemset/problem/271/E)|Codeforces||Codeforces Round #166 (Div. 2)|8|\n|<ul><li>- [ ] Done</li></ul>|570|[More Queries to Array...](http://codeforces.com/problemset/problem/266/E)|Codeforces||Codeforces Round #163 (Div. 2)|8|\n|<ul><li>- [ ] Done</li></ul>|571|[BerDonalds](http://codeforces.com/problemset/problem/266/D)|Codeforces||Codeforces Round #163 (Div. 2)|8|\n|<ul><li>- [ ] Done</li></ul>|572|[Misha and Palindrome Degree](http://codeforces.com/problemset/problem/501/E)|Codeforces||Codeforces Round #285 (Div. 2) & Codeforces Round #285 (Div. 1)|8|\n|<ul><li>- [ ] Done</li></ul>|573|[Mother of Dragons](http://codeforces.com/problemset/problem/839/E)|Codeforces||Codeforces Round #428 (Div. 2)|8|\n|<ul><li>- [ ] Done</li></ul>|574|[Memory and Casinos](http://codeforces.com/problemset/problem/712/E)|Codeforces||Codeforces Round #370 (Div. 2)|8|\n|<ul><li>- [ ] Done</li></ul>|575|[Two Sets](http://codeforces.com/problemset/problem/251/D)|Codeforces||Codeforces Round #153 (Div. 1)|9|\n|<ul><li>- [ ] Done</li></ul>|576|[Endless Matrix](http://codeforces.com/problemset/problem/249/E)|Codeforces||Codeforces Round #152 (Div. 1)|9|\n|<ul><li>- [ ] Done</li></ul>|577|[Friends](http://codeforces.com/problemset/problem/241/B)|Codeforces||Bayan 2012-2013 Elimination Round (ACM ICPC Rules, English statements)|9|\n|<ul><li>- [ ] Done</li></ul>|578|[Little Elephant and Triangle](http://codeforces.com/problemset/problem/220/D)|Codeforces||Codeforces Round #136 (Div. 1)|9|\n|<ul><li>- [ ] Done</li></ul>|579|[Bitonix' Patrol](http://codeforces.com/problemset/problem/217/D)|Codeforces||Codeforces Round #134 (Div. 1)|9|\n|<ul><li>- [ ] Done</li></ul>|580|[Pixels](http://codeforces.com/problemset/problem/209/B)|Codeforces||VK Cup 2012 Finals, Practice Session|9|\n|<ul><li>- [ ] Done</li></ul>|581|[Tractor College](http://codeforces.com/problemset/problem/200/E)|Codeforces||Codeforces Round #126 (Div. 2)|9|\n|<ul><li>- [ ] Done</li></ul>|582|[Fibonacci Number](http://codeforces.com/problemset/problem/193/E)|Codeforces||Codeforces Round #122 (Div. 1)|9|\n|<ul><li>- [ ] Done</li></ul>|583|[LCM](http://codeforces.com/problemset/problem/188/C)|Codeforces||Surprise Language Round #6|9|\n|<ul><li>- [ ] Done</li></ul>|584|[Visit of the Great](http://codeforces.com/problemset/problem/185/D)|Codeforces||Codeforces Round #118 (Div. 1)|9|\n|<ul><li>- [ ] Done</li></ul>|585|[Divisibility Rules](http://codeforces.com/problemset/problem/180/B)|Codeforces||Codeforces Round #116 (Div. 2, ACM-ICPC Rules)|9|\n|<ul><li>- [ ] Done</li></ul>|586|[Wizards and Bets](http://codeforces.com/problemset/problem/167/E)|Codeforces||Codeforces Round #114 (Div. 1)|9|\n|<ul><li>- [ ] Done</li></ul>|587|[Flatland Fencing](http://codeforces.com/problemset/problem/154/D)|Codeforces||Codeforces Round #109 (Div. 1)|9|\n|<ul><li>- [ ] Done</li></ul>|588|[Not Quick Transformation](http://codeforces.com/problemset/problem/117/D)|Codeforces||Codeforces Beta Round #88|9|\n|<ul><li>- [ ] Done</li></ul>|589|[Rotation](http://codeforces.com/problemset/problem/100/I)|Codeforces||Unknown Language Round #3|9|\n|<ul><li>- [ ] Done</li></ul>|590|[Winning Strategy](http://codeforces.com/problemset/problem/97/C)|Codeforces||Yandex.Algorithm 2011 Finals|9|\n|<ul><li>- [ ] Done</li></ul>|591|[Lostborn](http://codeforces.com/problemset/problem/93/E)|Codeforces||Codeforces Beta Round #76 (Div. 1 Only)|9|\n|<ul><li>- [ ] Done</li></ul>|592|[Flags](http://codeforces.com/problemset/problem/93/D)|Codeforces||Codeforces Beta Round #76 (Div. 1 Only)|9|\n|<ul><li>- [ ] Done</li></ul>|593|[Tetris revisited](http://codeforces.com/problemset/problem/86/B)|Codeforces||Yandex.Algorithm 2011 Round 2|9|\n|<ul><li>- [ ] Done</li></ul>|594|[Archer's Shot](http://codeforces.com/problemset/problem/78/D)|Codeforces||Codeforces Beta Round #70 (Div. 2)|9|\n|<ul><li>- [ ] Done</li></ul>|595|[Morrowindows](http://codeforces.com/problemset/problem/73/E)|Codeforces||Codeforces Beta Round #66|9|\n|<ul><li>- [ ] Done</li></ul>|596|[Extraordinarily Nice Numbers](http://codeforces.com/problemset/problem/72/C)|Codeforces||Unknown Language Round #2|9|\n|<ul><li>- [ ] Done</li></ul>|597|[Table](http://codeforces.com/problemset/problem/64/C)|Codeforces||Unknown Language Round #1|9|\n|<ul><li>- [ ] Done</li></ul>|598|[Mushroom Gnomes](http://codeforces.com/problemset/problem/60/E)|Codeforces||Codeforces Beta Round #56|9|\n|<ul><li>- [ ] Done</li></ul>|599|[Savior](http://codeforces.com/problemset/problem/60/D)|Codeforces||Codeforces Beta Round #56|9|\n|<ul><li>- [ ] Done</li></ul>|600|[Journey](http://codeforces.com/problemset/problem/57/D)|Codeforces||Codeforces Beta Round #53|9|\n|<ul><li>- [ ] Done</li></ul>|601|[Square Equation Roots](http://codeforces.com/problemset/problem/50/E)|Codeforces||Codeforces Beta Round #47|9|\n|<ul><li>- [ ] Done</li></ul>|602|[Strange town](http://codeforces.com/problemset/problem/42/D)|Codeforces||Codeforces Beta Round #41|9|\n|<ul><li>- [ ] Done</li></ul>|603|[Berland Square](http://codeforces.com/problemset/problem/40/C)|Codeforces||Codeforces Beta Round #39|9|\n|<ul><li>- [ ] Done</li></ul>|604|[Lesson Timetable](http://codeforces.com/problemset/problem/37/D)|Codeforces||Codeforces Beta Round #37|9|\n|<ul><li>- [ ] Done</li></ul>|605|[Tetragon](http://codeforces.com/problemset/problem/23/D)|Codeforces||Codeforces Beta Round #23|9|\n|<ul><li>- [ ] Done</li></ul>|606|[Four Divisors](http://codeforces.com/problemset/problem/665/F)|Codeforces||Educational Codeforces Round 12|9|\n|<ul><li>- [ ] Done</li></ul>|607|[Gambling Nim](http://codeforces.com/problemset/problem/662/A)|Codeforces||CROC 2016 - Final Round [Private, For Onsite Finalists Only]|9|\n|<ul><li>- [ ] Done</li></ul>|608|[Bear and Paradox](http://codeforces.com/problemset/problem/639/E)|Codeforces||VK Cup 2016 - Round 1|9|\n|<ul><li>- [ ] Done</li></ul>|609|[Ruminations on Ruminants](http://codeforces.com/problemset/problem/603/D)|Codeforces||Codeforces Round #334 (Div. 1)|9|\n|<ul><li>- [ ] Done</li></ul>|610|[Beautiful Function](http://codeforces.com/problemset/problem/593/C)|Codeforces||Codeforces Round #329 (Div. 2)|9|\n|<ul><li>- [ ] Done</li></ul>|611|[Task processing](http://codeforces.com/problemset/problem/589/K)|Codeforces||2015-2016 ACM-ICPC, NEERC, Southern Subregional Contest (Online Mirror, ACM-ICPC Rules, Teams Preferred)|9|\n|<ul><li>- [ ] Done</li></ul>|612|[Present for Vitalik the Philatelist ](http://codeforces.com/problemset/problem/585/E)|Codeforces||Codeforces Round #325 (Div. 1)|9|\n|<ul><li>- [ ] Done</li></ul>|613|[Fibonotci](http://codeforces.com/problemset/problem/575/A)|Codeforces||Bubble Cup 8 - Finals [Online Mirror]|9|\n|<ul><li>- [ ] Done</li></ul>|614|[Sign Posts](http://codeforces.com/problemset/problem/568/D)|Codeforces||Codeforces Round #315 (Div. 1)|9|\n|<ul><li>- [ ] Done</li></ul>|615|[Superhero's Job](http://codeforces.com/problemset/problem/542/D)|Codeforces||VK Cup 2015 - Round 3 (unofficial online mirror, Div. 1 only)|9|\n|<ul><li>- [ ] Done</li></ul>|616|[New York Hotel](http://codeforces.com/problemset/problem/491/B)|Codeforces||Testing Round #11|9|\n|<ul><li>- [ ] Done</li></ul>|617|[Design Tutorial: Change the Goal](http://codeforces.com/problemset/problem/472/F)|Codeforces||Codeforces Round #270|9|\n|<ul><li>- [ ] Done</li></ul>|618|[Appleman and Complicated Task](http://codeforces.com/problemset/problem/461/D)|Codeforces||Codeforces Round #263 (Div. 1)|9|\n|<ul><li>- [ ] Done</li></ul>|619|[Roland and Rose](http://codeforces.com/problemset/problem/460/E)|Codeforces||Codeforces Round #262 (Div. 2)|9|\n|<ul><li>- [ ] Done</li></ul>|620|[Physical Education and Buns](http://codeforces.com/problemset/problem/394/D)|Codeforces||Codeforces Round #231 (Div. 2)|9|\n|<ul><li>- [ ] Done</li></ul>|621|[Yet Another Number Sequence](http://codeforces.com/problemset/problem/392/C)|Codeforces||Codeforces Round #230 (Div. 1) & Codeforces Round #230 (Div. 2)|9|\n|<ul><li>- [ ] Done</li></ul>|622|[Fox and Perfect Sets](http://codeforces.com/problemset/problem/388/D)|Codeforces||Codeforces Round #228 (Div. 1)|9|\n|<ul><li>- [ ] Done</li></ul>|623|[Sereja and Cinema](http://codeforces.com/problemset/problem/380/D)|Codeforces||Codeforces Round #223 (Div. 1)|9|\n|<ul><li>- [ ] Done</li></ul>|624|[Red and Black Tree](http://codeforces.com/problemset/problem/375/E)|Codeforces||Codeforces Round #221 (Div. 1)|9|\n|<ul><li>- [ ] Done</li></ul>|625|[Theft of Blueprints](http://codeforces.com/problemset/problem/332/D)|Codeforces||Codeforces Round #193 (Div. 2)|9|\n|<ul><li>- [ ] Done</li></ul>|626|[Ciel and Flipboard](http://codeforces.com/problemset/problem/321/D)|Codeforces||Codeforces Round #190 (Div. 1)|9|\n|<ul><li>- [ ] Done</li></ul>|627|[Summer Homework](http://codeforces.com/problemset/problem/316/E2)|Codeforces||ABBYY Cup 3.0|9|\n|<ul><li>- [ ] Done</li></ul>|628|[PE Lesson](http://codeforces.com/problemset/problem/316/D3)|Codeforces||ABBYY Cup 3.0|9|\n|<ul><li>- [ ] Done</li></ul>|629|[Rotatable Number](http://codeforces.com/problemset/problem/303/D)|Codeforces||Codeforces Round #183 (Div. 1)|9|\n|<ul><li>- [ ] Done</li></ul>|630|[Ksusha and Square](http://codeforces.com/problemset/problem/293/D)|Codeforces||Croc Champ 2013 - Round 2|9|\n|<ul><li>- [ ] Done</li></ul>|631|[Polo the Penguin and Lucky Numbers](http://codeforces.com/problemset/problem/288/E)|Codeforces||Codeforces Round #177 (Div. 1)|9|\n|<ul><li>- [ ] Done</li></ul>|632|[Donkey and Stars](http://codeforces.com/problemset/problem/249/D)|Codeforces||Codeforces Round #152 (Div. 1)|9|\n|<ul><li>- [ ] Done</li></ul>|633|[Cowboys](http://codeforces.com/problemset/problem/212/C)|Codeforces||VK Cup 2012 Finals (unofficial online-version)|9|\n|<ul><li>- [ ] Done</li></ul>|634|[Horse Races](http://codeforces.com/problemset/problem/95/D)|Codeforces||Codeforces Beta Round #77 (Div. 1 Only) & Codeforces Beta Round #77 (Div. 2 Only)|9|\n|<ul><li>- [ ] Done</li></ul>|635|[Optimal Point](http://codeforces.com/problemset/problem/685/C)|Codeforces||Codeforces Round #359 (Div. 1) & Codeforces Round #359 (Div. 2)|9|\n|<ul><li>- [ ] Done</li></ul>|636|[Subarray Cuts](http://codeforces.com/problemset/problem/513/E1)|Codeforces||Rockethon 2015|9|\n|<ul><li>- [ ] Done</li></ul>|637|[Lust](http://codeforces.com/problemset/problem/891/E)|Codeforces||Codeforces Round #446 (Div. 1)|9|\n|<ul><li>- [ ] Done</li></ul>|638|[Surprise me!](http://codeforces.com/problemset/problem/809/E)|Codeforces||Codeforces Round #415 (Div. 1)|9|\n|<ul><li>- [ ] Done</li></ul>|639|[Strange Radiation](http://codeforces.com/problemset/problem/832/C)|Codeforces||Codeforces Round #425 (Div. 2)|9|\n|<ul><li>- [ ] Done</li></ul>|640|[Ivan the Fool VS Gorynych the Dragon](http://codeforces.com/problemset/problem/48/E)|Codeforces||School Personal Contest #3 (Winter Computer School 2010/11) - Codeforces Beta Round #45 (ACM-ICPC Rules)|9|\n|<ul><li>- [ ] Done</li></ul>|641|[Birthday](http://codeforces.com/problemset/problem/128/E)|Codeforces||Codeforces Beta Round #94 (Div. 1 Only)|10|\n|<ul><li>- [ ] Done</li></ul>|642|[Sleeping](http://codeforces.com/problemset/problem/113/E)|Codeforces||Codeforces Beta Round #86 (Div. 1 Only)|10|\n|<ul><li>- [ ] Done</li></ul>|643|[Lucky Interval](http://codeforces.com/problemset/problem/109/E)|Codeforces||Codeforces Beta Round #84 (Div. 1 Only)|10|\n|<ul><li>- [ ] Done</li></ul>|644|[Interval Coloring](http://codeforces.com/problemset/problem/100/J)|Codeforces||Unknown Language Round #3|10|\n|<ul><li>- [ ] Done</li></ul>|645|[Lamps in a Line](http://codeforces.com/problemset/problem/100/E)|Codeforces||Unknown Language Round #3|10|\n|<ul><li>- [ ] Done</li></ul>|646|[Help Shrek and Donkey](http://codeforces.com/problemset/problem/98/E)|Codeforces||Codeforces Beta Round #78 (Div. 1 Only)|10|\n|<ul><li>- [ ] Done</li></ul>|647|[Long sequence](http://codeforces.com/problemset/problem/86/E)|Codeforces||Yandex.Algorithm 2011 Round 2|10|\n|<ul><li>- [ ] Done</li></ul>|648|[Security System](http://codeforces.com/problemset/problem/79/E)|Codeforces||Codeforces Beta Round #71|10|\n|<ul><li>- [ ] Done</li></ul>|649|[Mutation](http://codeforces.com/problemset/problem/76/C)|Codeforces||All-Ukrainian School Olympiad in Informatics|10|\n|<ul><li>- [ ] Done</li></ul>|650|[Oil](http://codeforces.com/problemset/problem/72/F)|Codeforces||Unknown Language Round #2|10|\n|<ul><li>- [ ] Done</li></ul>|651|[Goshtasp, Vishtasp and Eidi](http://codeforces.com/problemset/problem/72/A)|Codeforces||Unknown Language Round #2|10|\n|<ul><li>- [ ] Done</li></ul>|652|[Chess](http://codeforces.com/problemset/problem/57/E)|Codeforces||Codeforces Beta Round #53|10|\n|<ul><li>- [ ] Done</li></ul>|653|[Interesting Sequence](http://codeforces.com/problemset/problem/40/D)|Codeforces||Codeforces Beta Round #39|10|\n|<ul><li>- [ ] Done</li></ul>|654|[BigFibonacci](http://community.topcoder.com/stat?c=problem_statement&pm=6077)|TopCoder||TCO06 Sponsor 5 - Div1 hard] (9916)|10|\n|<ul><li>- [ ] Done</li></ul>|655|[Ants on a Circle](http://codeforces.com/problemset/problem/652/F)|Codeforces||Educational Codeforces Round 10|10|\n|<ul><li>- [ ] Done</li></ul>|656|[Agricultural Archaeology](http://codeforces.com/problemset/problem/589/L)|Codeforces||2015-2016 ACM-ICPC, NEERC, Southern Subregional Contest (Online Mirror, ACM-ICPC Rules, Teams Preferred)|10|\n|<ul><li>- [ ] Done</li></ul>|657|[Geometric Progressions](http://codeforces.com/problemset/problem/571/E)|Codeforces||Codeforces Round #317 [AimFund Thanks-Round] (Div. 1)|10|\n|<ul><li>- [ ] Done</li></ul>|658|[Sasha Circle](http://codeforces.com/problemset/problem/549/E)|Codeforces||Looksery Cup 2015|10|\n|<ul><li>- [ ] Done</li></ul>|659|[Berserk Robot ](http://codeforces.com/problemset/problem/538/G)|Codeforces||Codeforces Round #300|10|\n|<ul><li>- [ ] Done</li></ul>|660|[Gears](http://codeforces.com/problemset/problem/497/D)|Codeforces||Codeforces Round #283 (Div. 1)|10|\n|<ul><li>- [ ] Done</li></ul>|661|[Permanent](http://codeforces.com/problemset/problem/468/E)|Codeforces||Codeforces Round #268 (Div. 1)|10|\n|<ul><li>- [ ] Done</li></ul>|662|[Flow Optimality](http://codeforces.com/problemset/problem/457/E)|Codeforces||MemSQL Start[c]UP 2.0 - Round 2|10|\n|<ul><li>- [ ] Done</li></ul>|663|[Bingo!](http://codeforces.com/problemset/problem/457/D)|Codeforces||MemSQL Start[c]UP 2.0 - Round 2|10|\n|<ul><li>- [ ] Done</li></ul>|664|[Jzzhu and Squares](http://codeforces.com/problemset/problem/449/E)|Codeforces||Codeforces Round #257 (Div. 1)|10|\n|<ul><li>- [ ] Done</li></ul>|665|[DZY Loves Bridges](http://codeforces.com/problemset/problem/446/E)|Codeforces||Codeforces Round #255 (Div. 1)|10|\n|<ul><li>- [ ] Done</li></ul>|666|[DZY Loves Games](http://codeforces.com/problemset/problem/446/D)|Codeforces||Codeforces Round #255 (Div. 1)|10|\n|<ul><li>- [ ] Done</li></ul>|667|[Hamming Triples](http://codeforces.com/problemset/problem/406/E)|Codeforces||Codeforces Round #238 (Div. 1)|10|\n|<ul><li>- [ ] Done</li></ul>|668|[Olympic Games](http://codeforces.com/problemset/problem/401/E)|Codeforces||Codeforces Round #235 (Div. 2)|10|\n|<ul><li>- [ ] Done</li></ul>|669|[Doodle Jump](http://codeforces.com/problemset/problem/346/E)|Codeforces||Codeforces Round #201 (Div. 1)|10|\n|<ul><li>- [ ] Done</li></ul>|670|[Counting Skyscrapers](http://codeforces.com/problemset/problem/335/E)|Codeforces||MemSQL start[c]up Round 2 - online version|10|\n|<ul><li>- [ ] Done</li></ul>|671|[Evil](http://codeforces.com/problemset/problem/329/E)|Codeforces||Codeforces Round #192 (Div. 1)|10|\n|<ul><li>- [ ] Done</li></ul>|672|[Sequence Transformation](http://codeforces.com/problemset/problem/280/E)|Codeforces||Codeforces Round #172 (Div. 1)|10|\n|<ul><li>- [ ] Done</li></ul>|673|[Berland Traffic](http://codeforces.com/problemset/problem/267/C)|Codeforces||Codeforces Testing Round #5|10|\n|<ul><li>- [ ] Done</li></ul>|674|[DravDe saves the world](http://codeforces.com/problemset/problem/28/E)|Codeforces||Codeforces Beta Round #28 (Codeforces format)|10|\n|<ul><li>- [ ] Done</li></ul>|675|[Wisdom](https://icpcarchive.ecs.baylor.edu/index.php?option=onlinejudge&page=show_problem&problem=1023)|Live Archive|2004|Africa/Middle East - South Africa|10|\n|<ul><li>- [ ] Done</li></ul>|676|[Nephren Runs a Cinema](http://codeforces.com/problemset/problem/896/D)|Codeforces||Codeforces Round #449 (Div. 1)|10|\n|<ul><li>- [ ] Done</li></ul>|677|[Mod Mod Mod](http://codeforces.com/problemset/problem/889/E)|Codeforces||Codeforces Round #445 (Div. 1, based on Technocup 2018 Elimination Round 3)|10|\n|<ul><li>- [ ] Done</li></ul>|678|[Perpetual Motion Machine](http://codeforces.com/problemset/problem/830/E)|Codeforces||Codeforces Round #424 (Div. 1, rated, based on VK Cup Finals)|10|\n|<ul><li>- [ ] Done</li></ul>|679|[Days of Floral Colours](http://codeforces.com/problemset/problem/848/E)|Codeforces||Codeforces Round #431 (Div. 1)|10|\n"
  },
  {
    "path": "categories/004. Greedy/README.md",
    "content": "# 004. Greedy\n\n\n| Checkbox | ID | Problem Name|Online Judge|Year|Contest|Difficulty Level|\n|:---:|:---:|:---:|:---:|:---:|:---:|:---:|\n|<ul><li>- [ ] Done</li></ul>|1|[Wine trading in Gergovia](http://www.spoj.com/problems/GERGOVIA/)|SPOJ|||1|\n|<ul><li>- [ ] Done</li></ul>|2|[All in All](https://uva.onlinejudge.org/index.php?option=onlinejudge&page=show_problem&problem=1281)|UVA|||1|\n|<ul><li>- [ ] Done</li></ul>|3|[Help the soldier](http://www.spoj.com/problems/SOLDIER/)|SPOJ|||1|\n|<ul><li>- [ ] Done</li></ul>|4|[Little Elephant and Bits](http://codeforces.com/problemset/problem/258/A)|Codeforces||Codeforces Round #157 (Div. 1) & Codeforces Round #157 (Div. 2)|1|\n|<ul><li>- [ ] Done</li></ul>|5|[Team](http://codeforces.com/problemset/problem/231/A)|Codeforces||Codeforces Round #143 (Div. 2)|1|\n|<ul><li>- [ ] Done</li></ul>|6|[Dragons](http://codeforces.com/problemset/problem/230/A)|Codeforces||Codeforces Round #142 (Div. 2)|1|\n|<ul><li>- [ ] Done</li></ul>|7|[Twins](http://codeforces.com/problemset/problem/160/A)|Codeforces||Codeforces Round #111 (Div. 2)|1|\n|<ul><li>- [ ] Done</li></ul>|8|[Taxi](http://codeforces.com/problemset/problem/158/B)|Codeforces||VK Cup 2012 Qualification Round 1|1|\n|<ul><li>- [ ] Done</li></ul>|9|[Chat room](http://codeforces.com/problemset/problem/58/A)|Codeforces||Codeforces Beta Round #54 (Div. 2)|1|\n|<ul><li>- [ ] Done</li></ul>|10|[Domino piling](http://codeforces.com/problemset/problem/50/A)|Codeforces||Codeforces Beta Round #47|1|\n|<ul><li>- [ ] Done</li></ul>|11|[Sale](http://codeforces.com/problemset/problem/34/B)|Codeforces||Codeforces Beta Round #34 (Div. 2)|1|\n|<ul><li>- [ ] Done</li></ul>|12|[Shortest path of the king](http://codeforces.com/problemset/problem/3/A)|Codeforces||Codeforces Beta Round #3|1|\n|<ul><li>- [ ] Done</li></ul>|13|[Theatre Square](http://codeforces.com/problemset/problem/1/A)|Codeforces||Codeforces Beta Round #1|1|\n|<ul><li>- [ ] Done</li></ul>|14|[Adding Reversed Numbers](http://www.spoj.com/problems/ADDREV/)|SPOJ|||1|\n|<ul><li>- [ ] Done</li></ul>|15|[Army](http://codeforces.com/problemset/problem/38/A)|Codeforces||School Personal Contest #1 (Winter Computer School 2010/11) - Codeforces Beta Round #38 (ACM-ICPC Rules)|1|\n|<ul><li>- [ ] Done</li></ul>|16|[Before an Exam](http://codeforces.com/problemset/problem/4/B)|Codeforces||Codeforces Beta Round #4 (Div. 2 Only)|1|\n|<ul><li>- [ ] Done</li></ul>|17|[Maximum Sum (II)](https://uva.onlinejudge.org/index.php?option=onlinejudge&page=show_problem&problem=1597)|UVA|||1|\n|<ul><li>- [ ] Done</li></ul>|18|[Dragon of Loowater](https://uva.onlinejudge.org/index.php?option=onlinejudge&page=show_problem&problem=2267)|UVA|||1|\n|<ul><li>- [ ] Done</li></ul>|19|[Shopaholic](https://uva.onlinejudge.org/index.php?option=onlinejudge&page=show_problem&problem=2354)|UVA|||1|\n|<ul><li>- [ ] Done</li></ul>|20|[The Bus Driver Problem](https://uva.onlinejudge.org/index.php?option=onlinejudge&page=show_problem&problem=2384)|UVA|||1|\n|<ul><li>- [ ] Done</li></ul>|21|[Chocolate](http://www.spoj.com/problems/CHOCOLA/)|SPOJ|||1|\n|<ul><li>- [ ] Done</li></ul>|22|[I AM VERY BUSY](http://www.spoj.com/problems/BUSYMAN/)|SPOJ|||1|\n|<ul><li>- [ ] Done</li></ul>|23|[DIE HARD](http://www.spoj.com/problems/DIEHARD/)|SPOJ|||1|\n|<ul><li>- [ ] Done</li></ul>|24|[Optimal Array Multiplication Sequence](https://uva.onlinejudge.org/index.php?option=onlinejudge&page=show_problem&problem=284)|UVA|||1|\n|<ul><li>- [ ] Done</li></ul>|25|[Bon Appetit](http://www.codechef.com/problems/FGFS)|CodeChef|||1|\n|<ul><li>- [ ] Done</li></ul>|26|[Tanya and Toys](http://codeforces.com/problemset/problem/659/C)|Codeforces||Codeforces Round #346 (Div. 2)|1|\n|<ul><li>- [ ] Done</li></ul>|27|[Beautiful Paintings](http://codeforces.com/problemset/problem/651/B)|Codeforces||Codeforces Round #345 (Div. 2)|1|\n|<ul><li>- [ ] Done</li></ul>|28|[Joysticks](http://codeforces.com/problemset/problem/651/A)|Codeforces||Codeforces Round #345 (Div. 2)|1|\n|<ul><li>- [ ] Done</li></ul>|29|[USB Flash Drives](http://codeforces.com/problemset/problem/609/A)|Codeforces||Educational Codeforces Round 3|1|\n|<ul><li>- [ ] Done</li></ul>|30|[Wilbur and Array](http://codeforces.com/problemset/problem/596/B)|Codeforces||Codeforces Round #331 (Div. 2)|1|\n|<ul><li>- [ ] Done</li></ul>|31|[Duff and Meat](http://codeforces.com/problemset/problem/588/A)|Codeforces||Codeforces Round #326 (Div. 2)|1|\n|<ul><li>- [ ] Done</li></ul>|32|[Simple Game](http://codeforces.com/problemset/problem/570/B)|Codeforces||Codeforces Round #316 (Div. 2)|1|\n|<ul><li>- [ ] Done</li></ul>|33|[Ilya and Diplomas](http://codeforces.com/problemset/problem/557/A)|Codeforces||Codeforces Round #311 (Div. 2)|1|\n|<ul><li>- [ ] Done</li></ul>|34|[Case of the Zeros and Ones](http://codeforces.com/problemset/problem/556/A)|Codeforces||Codeforces Round #310 (Div. 2)|1|\n|<ul><li>- [ ] Done</li></ul>|35|[Soldier and Badges](http://codeforces.com/problemset/problem/546/B)|Codeforces||Codeforces Round #304 (Div. 2)|1|\n|<ul><li>- [ ] Done</li></ul>|36|[Queue](http://codeforces.com/problemset/problem/545/D)|Codeforces||Codeforces Round #303 (Div. 2)|1|\n|<ul><li>- [ ] Done</li></ul>|37|[Woodcutters](http://codeforces.com/problemset/problem/545/C)|Codeforces||Codeforces Round #303 (Div. 2)|1|\n|<ul><li>- [ ] Done</li></ul>|38|[Equidistant String](http://codeforces.com/problemset/problem/545/B)|Codeforces||Codeforces Round #303 (Div. 2)|1|\n|<ul><li>- [ ] Done</li></ul>|39|[Quasi Binary](http://codeforces.com/problemset/problem/538/B)|Codeforces||Codeforces Round #300|1|\n|<ul><li>- [ ] Done</li></ul>|40|[Vitaliy and Pie](http://codeforces.com/problemset/problem/525/A)|Codeforces||Codeforces Round #297 (Div. 2)|1|\n|<ul><li>- [ ] Done</li></ul>|41|[Two Buttons](http://codeforces.com/problemset/problem/520/B)|Codeforces||Codeforces Round #295 (Div. 2)|1|\n|<ul><li>- [ ] Done</li></ul>|42|[A and B and Team Training](http://codeforces.com/problemset/problem/519/C)|Codeforces||Codeforces Round #294 (Div. 2)|1|\n|<ul><li>- [ ] Done</li></ul>|43|[Drazil and Factorial](http://codeforces.com/problemset/problem/515/C)|Codeforces||Codeforces Round #292 (Div. 2) & Codeforces Round #292 (Div. 1)|1|\n|<ul><li>- [ ] Done</li></ul>|44|[Chewba?ca and Number](http://codeforces.com/problemset/problem/514/A)|Codeforces||Codeforces Round #291 (Div. 2)|1|\n|<ul><li>- [ ] Done</li></ul>|45|[Anton and currency you all know](http://codeforces.com/problemset/problem/508/B)|Codeforces||Codeforces Round #288 (Div. 2)|1|\n|<ul><li>- [ ] Done</li></ul>|46|[Amr and Music](http://codeforces.com/problemset/problem/507/A)|Codeforces||Codeforces Round #287 (Div. 2)|1|\n|<ul><li>- [ ] Done</li></ul>|47|[Team Olympiad](http://codeforces.com/problemset/problem/490/A)|Codeforces||Codeforces Round #279 (Div. 2)|1|\n|<ul><li>- [ ] Done</li></ul>|48|[Given Length and Sum of Digits...](http://codeforces.com/problemset/problem/489/C)|Codeforces||Codeforces Round #277.5 (Div. 2)|1|\n|<ul><li>- [ ] Done</li></ul>|49|[BerSU Ball](http://codeforces.com/problemset/problem/489/B)|Codeforces||Codeforces Round #277.5 (Div. 2)|1|\n|<ul><li>- [ ] Done</li></ul>|50|[OR in Matrix](http://codeforces.com/problemset/problem/486/B)|Codeforces||Codeforces Round #277 (Div. 2)|1|\n|<ul><li>- [ ] Done</li></ul>|51|[Diverse Permutation](http://codeforces.com/problemset/problem/482/A)|Codeforces||Codeforces Round #275 (Div. 1) & Codeforces Round #275 (Div. 2)|1|\n|<ul><li>- [ ] Done</li></ul>|52|[Exams](http://codeforces.com/problemset/problem/479/C)|Codeforces||Codeforces Round #274 (Div. 2) & Codeforces Round #274 (Div. 1)|1|\n|<ul><li>- [ ] Done</li></ul>|53|[Table Decorations](http://codeforces.com/problemset/problem/478/C)|Codeforces||Codeforces Round #273 (Div. 2)|1|\n|<ul><li>- [ ] Done</li></ul>|54|[Random Teams](http://codeforces.com/problemset/problem/478/B)|Codeforces||Codeforces Round #273 (Div. 2)|1|\n|<ul><li>- [ ] Done</li></ul>|55|[I Wanna Be the Guy](http://codeforces.com/problemset/problem/469/A)|Codeforces||Codeforces Round #268 (Div. 2)|1|\n|<ul><li>- [ ] Done</li></ul>|56|[Appleman and Toastman](http://codeforces.com/problemset/problem/461/A)|Codeforces||Codeforces Round #263 (Div. 1) & Codeforces Round #263 (Div. 2)|1|\n|<ul><li>- [ ] Done</li></ul>|57|[DZY Loves Strings](http://codeforces.com/problemset/problem/447/B)|Codeforces||Codeforces Round #255 (Div. 2)|1|\n|<ul><li>- [ ] Done</li></ul>|58|[Devu, the Singer and Churu, the Joker](http://codeforces.com/problemset/problem/439/A)|Codeforces||Codeforces Round #251 (Div. 2)|1|\n|<ul><li>- [ ] Done</li></ul>|59|[Choosing Teams](http://codeforces.com/problemset/problem/432/A)|Codeforces||Codeforces Round #246 (Div. 2)|1|\n|<ul><li>- [ ] Done</li></ul>|60|[Gravity Flip](http://codeforces.com/problemset/problem/405/A)|Codeforces||Codeforces Round #238 (Div. 2)|1|\n|<ul><li>- [ ] Done</li></ul>|61|[Team](http://codeforces.com/problemset/problem/401/C)|Codeforces||Codeforces Round #235 (Div. 2)|1|\n|<ul><li>- [ ] Done</li></ul>|62|[Fox and Number Game](http://codeforces.com/problemset/problem/389/A)|Codeforces||Codeforces Round #228 (Div. 2)|1|\n|<ul><li>- [ ] Done</li></ul>|63|[Bear and Raspberry](http://codeforces.com/problemset/problem/385/A)|Codeforces||Codeforces Round #226 (Div. 2)|1|\n|<ul><li>- [ ] Done</li></ul>|64|[Sereja and Dima](http://codeforces.com/problemset/problem/381/A)|Codeforces||Codeforces Round #223 (Div. 2)|1|\n|<ul><li>- [ ] Done</li></ul>|65|[TL](http://codeforces.com/problemset/problem/350/A)|Codeforces||Codeforces Round #203 (Div. 2)|1|\n|<ul><li>- [ ] Done</li></ul>|66|[Cinema Line](http://codeforces.com/problemset/problem/349/A)|Codeforces||Codeforces Round #202 (Div. 2)|1|\n|<ul><li>- [ ] Done</li></ul>|67|[Helpful Maths](http://codeforces.com/problemset/problem/339/A)|Codeforces||Codeforces Round #197 (Div. 2)|1|\n|<ul><li>- [ ] Done</li></ul>|68|[Puzzles](http://codeforces.com/problemset/problem/337/A)|Codeforces||Codeforces Round #196 (Div. 2)|1|\n|<ul><li>- [ ] Done</li></ul>|69|[Magic Numbers](http://codeforces.com/problemset/problem/320/A)|Codeforces||Codeforces Round #189 (Div. 2)|1|\n|<ul><li>- [ ] Done</li></ul>|70|[Building Permutation](http://codeforces.com/problemset/problem/285/C)|Codeforces||Codeforces Round #175 (Div. 2)|1|\n|<ul><li>- [ ] Done</li></ul>|71|[Slightly Decreasing Permutations](http://codeforces.com/problemset/problem/285/A)|Codeforces||Codeforces Round #175 (Div. 2)|1|\n|<ul><li>- [ ] Done</li></ul>|72|[Little Girl and Game](http://codeforces.com/problemset/problem/276/B)|Codeforces||Codeforces Round #169 (Div. 2)|1|\n|<ul><li>- [ ] Done</li></ul>|73|[Roadside Trees (Simplified Edition)](http://codeforces.com/problemset/problem/265/B)|Codeforces||Codeforces Round #162 (Div. 2)|1|\n|<ul><li>- [ ] Done</li></ul>|74|[Business trip](http://codeforces.com/problemset/problem/149/A)|Codeforces||Codeforces Round #106 (Div. 2)|1|\n|<ul><li>- [ ] Done</li></ul>|75|[At most twice](https://icpcarchive.ecs.baylor.edu/index.php?option=onlinejudge&page=show_problem&problem=5215)|Live Archive|2015|Latin America|1|\n|<ul><li>- [ ] Done</li></ul>|76|[Expedition](http://www.spoj.com/problems/EXPEDI/)|SPOJ|||1|\n|<ul><li>- [ ] Done</li></ul>|77|[Bachgold Problem](http://codeforces.com/problemset/problem/749/A)|Codeforces||Codeforces Round #388 (Div. 2)|1|\n|<ul><li>- [ ] Done</li></ul>|78|[Mahmoud and a Triangle](http://codeforces.com/problemset/problem/766/B)|Codeforces||Codeforces Round #396 (Div. 2)|1|\n|<ul><li>- [ ] Done</li></ul>|79|[Anton and Classes](http://codeforces.com/problemset/problem/785/B)|Codeforces||Codeforces Round #404 (Div. 2)|1|\n|<ul><li>- [ ] Done</li></ul>|80|[Vladik and flights](http://codeforces.com/problemset/problem/743/A)|Codeforces||Codeforces Round #384 (Div. 2)|1|\n|<ul><li>- [ ] Done</li></ul>|81|[Patrick and Shopping](http://codeforces.com/problemset/problem/599/A)|Codeforces||Codeforces Round #332 (Div. 2)|1|\n|<ul><li>- [ ] Done</li></ul>|82|[The number of positions](http://codeforces.com/problemset/problem/124/A)|Codeforces||Codeforces Beta Round #92 (Div. 2 Only)|1|\n|<ul><li>- [ ] Done</li></ul>|83|[The Stern-Brocot Number System](https://uva.onlinejudge.org/index.php?option=onlinejudge&page=show_problem&problem=1018)|UVA|||1|\n|<ul><li>- [ ] Done</li></ul>|84|[Train TimeTable](http://www.spoj.com/problems/TTTABLE/)|SPOJ|||2|\n|<ul><li>- [ ] Done</li></ul>|85|[Station Balance](https://uva.onlinejudge.org/index.php?option=onlinejudge&page=show_problem&problem=351)|UVA|||2|\n|<ul><li>- [ ] Done</li></ul>|86|[Ambitious Manager](http://www.spoj.com/problems/AMBM/)|SPOJ|||2|\n|<ul><li>- [ ] Done</li></ul>|87|[Boys and Girls](http://codeforces.com/problemset/problem/253/A)|Codeforces||Codeforces Round #154 (Div. 2)|2|\n|<ul><li>- [ ] Done</li></ul>|88|[Points on Line](http://codeforces.com/problemset/problem/251/A)|Codeforces||Codeforces Round #153 (Div. 1) & Codeforces Round #153 (Div. 2)|2|\n|<ul><li>- [ ] Done</li></ul>|89|[Increase and Decrease](http://codeforces.com/problemset/problem/246/B)|Codeforces||Codeforces Round #151 (Div. 2)|2|\n|<ul><li>- [ ] Done</li></ul>|90|[Buggy Sorting](http://codeforces.com/problemset/problem/246/A)|Codeforces||Codeforces Round #151 (Div. 2)|2|\n|<ul><li>- [ ] Done</li></ul>|91|[Two Bags of Potatoes](http://codeforces.com/problemset/problem/239/A)|Codeforces||Codeforces Round #148 (Div. 2)|2|\n|<ul><li>- [ ] Done</li></ul>|92|[Airport](http://codeforces.com/problemset/problem/218/B)|Codeforces||Codeforces Round #134 (Div. 2)|2|\n|<ul><li>- [ ] Done</li></ul>|93|[Unlucky Ticket](http://codeforces.com/problemset/problem/160/B)|Codeforces||Codeforces Round #111 (Div. 2)|2|\n|<ul><li>- [ ] Done</li></ul>|94|[Combination](http://codeforces.com/problemset/problem/155/B)|Codeforces||Codeforces Round #109 (Div. 2)|2|\n|<ul><li>- [ ] Done</li></ul>|95|[Lucky Conversion](http://codeforces.com/problemset/problem/145/A)|Codeforces||Codeforces Round #104 (Div. 1) & Codeforces Round #104 (Div. 2)|2|\n|<ul><li>- [ ] Done</li></ul>|96|[Permutation](http://codeforces.com/problemset/problem/137/B)|Codeforces||Codeforces Beta Round #98 (Div. 2)|2|\n|<ul><li>- [ ] Done</li></ul>|97|[Little Pigs and Wolves](http://codeforces.com/problemset/problem/116/B)|Codeforces||Codeforces Beta Round #87 (Div. 2 Only)|2|\n|<ul><li>- [ ] Done</li></ul>|98|[Coins](http://codeforces.com/problemset/problem/58/B)|Codeforces||Codeforces Beta Round #54 (Div. 2)|2|\n|<ul><li>- [ ] Done</li></ul>|99|[Yaroslav and Permutations](http://codeforces.com/problemset/problem/296/A)|Codeforces||Codeforces Round #179 (Div. 2)|2|\n|<ul><li>- [ ] Done</li></ul>|100|[Dynamic Frog](https://uva.onlinejudge.org/index.php?option=onlinejudge&page=show_problem&problem=2098)|UVA|||2|\n|<ul><li>- [ ] Done</li></ul>|101|[Saruman of Many Colours](http://www.spoj.com/problems/AMR12I/)|SPOJ|||2|\n|<ul><li>- [ ] Done</li></ul>|102|[Watering Grass](https://uva.onlinejudge.org/index.php?option=onlinejudge&page=show_problem&problem=1323)|UVA|||2|\n|<ul><li>- [ ] Done</li></ul>|103|[Painting Eggs](http://codeforces.com/problemset/problem/282/B)|Codeforces||Codeforces Round #173 (Div. 2)|2|\n|<ul><li>- [ ] Done</li></ul>|104|[Cupboards](http://codeforces.com/problemset/problem/248/A)|Codeforces||Codeforces Round #152 (Div. 2)|2|\n|<ul><li>- [ ] Done</li></ul>|105|[Making a String](http://codeforces.com/problemset/problem/624/B)|Codeforces||AIM Tech Round (Div. 2)|2|\n|<ul><li>- [ ] Done</li></ul>|106|[Dinner with Emma](http://codeforces.com/problemset/problem/616/B)|Codeforces||Educational Codeforces Round 5|2|\n|<ul><li>- [ ] Done</li></ul>|107|[Sorting Railway Cars](http://codeforces.com/problemset/problem/605/A)|Codeforces||Codeforces Round #335 (Div. 1) & Codeforces Round #335 (Div. 2)|2|\n|<ul><li>- [ ] Done</li></ul>|108|[More Cowbell](http://codeforces.com/problemset/problem/604/B)|Codeforces||Codeforces Round #334 (Div. 2)|2|\n|<ul><li>- [ ] Done</li></ul>|109|[Alternative Thinking](http://codeforces.com/problemset/problem/603/A)|Codeforces||Codeforces Round #334 (Div. 1) & Codeforces Round #334 (Div. 2)|2|\n|<ul><li>- [ ] Done</li></ul>|110|[Duff and Weight Lifting](http://codeforces.com/problemset/problem/587/A)|Codeforces||Codeforces Round #326 (Div. 1) & Codeforces Round #326 (Div. 2)|2|\n|<ul><li>- [ ] Done</li></ul>|111|[GCD Table](http://codeforces.com/problemset/problem/582/A)|Codeforces||Codeforces Round #323 (Div. 1) & Codeforces Round #323 (Div. 2)|2|\n|<ul><li>- [ ] Done</li></ul>|112|[Inventory](http://codeforces.com/problemset/problem/569/B)|Codeforces||Codeforces Round #315 (Div. 2)|2|\n|<ul><li>- [ ] Done</li></ul>|113|[Mike and Fun](http://codeforces.com/problemset/problem/548/B)|Codeforces||Codeforces Round #305 (Div. 2)|2|\n|<ul><li>- [ ] Done</li></ul>|114|[Tourist's Notes](http://codeforces.com/problemset/problem/538/C)|Codeforces||Codeforces Round #300|2|\n|<ul><li>- [ ] Done</li></ul>|115|[Covered Path](http://codeforces.com/problemset/problem/534/B)|Codeforces||Codeforces Round #298 (Div. 2)|2|\n|<ul><li>- [ ] Done</li></ul>|116|[Pasha and String](http://codeforces.com/problemset/problem/525/B)|Codeforces||Codeforces Round #297 (Div. 2)|2|\n|<ul><li>- [ ] Done</li></ul>|117|[Painting Pebbles](http://codeforces.com/problemset/problem/509/B)|Codeforces||Codeforces Round #289 (Div. 2, ACM ICPC Rules)|2|\n|<ul><li>- [ ] Done</li></ul>|118|[New Year Book Reading](http://codeforces.com/problemset/problem/500/C)|Codeforces||Good Bye 2014|2|\n|<ul><li>- [ ] Done</li></ul>|119|[New Year Permutation](http://codeforces.com/problemset/problem/500/B)|Codeforces||Good Bye 2014|2|\n|<ul><li>- [ ] Done</li></ul>|120|[Vanya and Exams](http://codeforces.com/problemset/problem/492/C)|Codeforces||Codeforces Round #280 (Div. 2)|2|\n|<ul><li>- [ ] Done</li></ul>|121|[Palindrome Transformation](http://codeforces.com/problemset/problem/486/C)|Codeforces||Codeforces Round #277 (Div. 2)|2|\n|<ul><li>- [ ] Done</li></ul>|122|[Valuable Resources](http://codeforces.com/problemset/problem/485/B)|Codeforces||Codeforces Round #276 (Div. 2)|2|\n|<ul><li>- [ ] Done</li></ul>|123|[Towers](http://codeforces.com/problemset/problem/479/B)|Codeforces||Codeforces Round #274 (Div. 2)|2|\n|<ul><li>- [ ] Done</li></ul>|124|[Design Tutorial: Make It Nondeterministic](http://codeforces.com/problemset/problem/472/C)|Codeforces||Codeforces Round #270|2|\n|<ul><li>- [ ] Done</li></ul>|125|[24 Game](http://codeforces.com/problemset/problem/468/A)|Codeforces||Codeforces Round #268 (Div. 1) & Codeforces Round #268 (Div. 2)|2|\n|<ul><li>- [ ] Done</li></ul>|126|[Appleman and Card Game](http://codeforces.com/problemset/problem/462/B)|Codeforces||Codeforces Round #263 (Div. 2)|2|\n|<ul><li>- [ ] Done</li></ul>|127|[DZY Loves Chemistry](http://codeforces.com/problemset/problem/445/B)|Codeforces||Codeforces Round #254 (Div. 2)|2|\n|<ul><li>- [ ] Done</li></ul>|128|[The Child and Toy](http://codeforces.com/problemset/problem/437/C)|Codeforces||Codeforces Round #250 (Div. 2) & Codeforces Round #250 (Div. 1)|2|\n|<ul><li>- [ ] Done</li></ul>|129|[Football Kit](http://codeforces.com/problemset/problem/432/B)|Codeforces||Codeforces Round #246 (Div. 2)|2|\n|<ul><li>- [ ] Done</li></ul>|130|[Fox and Cross](http://codeforces.com/problemset/problem/389/B)|Codeforces||Codeforces Round #228 (Div. 2)|2|\n|<ul><li>- [ ] Done</li></ul>|131|[Fox and Box Accumulation](http://codeforces.com/problemset/problem/388/A)|Codeforces||Codeforces Round #228 (Div. 1) & Codeforces Round #228 (Div. 2)|2|\n|<ul><li>- [ ] Done</li></ul>|132|[George and Round](http://codeforces.com/problemset/problem/387/B)|Codeforces||Codeforces Round #227 (Div. 2)|2|\n|<ul><li>- [ ] Done</li></ul>|133|[Bear and Strings](http://codeforces.com/problemset/problem/385/B)|Codeforces||Codeforces Round #226 (Div. 2)|2|\n|<ul><li>- [ ] Done</li></ul>|134|[Ksenia and Pan Scales](http://codeforces.com/problemset/problem/382/A)|Codeforces||Codeforces Round #224 (Div. 2)|2|\n|<ul><li>- [ ] Done</li></ul>|135|[New Year Ratings Change](http://codeforces.com/problemset/problem/379/C)|Codeforces||Good Bye 2013|2|\n|<ul><li>- [ ] Done</li></ul>|136|[Counting Kangaroos is Fun](http://codeforces.com/problemset/problem/372/A)|Codeforces||Codeforces Round #219 (Div. 1) & Codeforces Round #219 (Div. 2)|2|\n|<ul><li>- [ ] Done</li></ul>|137|[Fixing Typos](http://codeforces.com/problemset/problem/363/C)|Codeforces||Codeforces Round #211 (Div. 2)|2|\n|<ul><li>- [ ] Done</li></ul>|138|[Table](http://codeforces.com/problemset/problem/359/A)|Codeforces||Codeforces Round #209 (Div. 2)|2|\n|<ul><li>- [ ] Done</li></ul>|139|[Group of Students](http://codeforces.com/problemset/problem/357/A)|Codeforces||Codeforces Round #207 (Div. 2)|2|\n|<ul><li>- [ ] Done</li></ul>|140|[Color the Fence](http://codeforces.com/problemset/problem/349/B)|Codeforces||Codeforces Round #202 (Div. 2)|2|\n|<ul><li>- [ ] Done</li></ul>|141|[Alternating Current](http://codeforces.com/problemset/problem/343/B)|Codeforces||Codeforces Round #200 (Div. 1) & Codeforces Round #200 (Div. 2)|2|\n|<ul><li>- [ ] Done</li></ul>|142|[Xenia and Divisors](http://codeforces.com/problemset/problem/342/A)|Codeforces||Codeforces Round #199 (Div. 2)|2|\n|<ul><li>- [ ] Done</li></ul>|143|[Ciel and Dancing](http://codeforces.com/problemset/problem/322/A)|Codeforces||Codeforces Round #190 (Div. 2)|2|\n|<ul><li>- [ ] Done</li></ul>|144|[Sail](http://codeforces.com/problemset/problem/298/B)|Codeforces||Codeforces Round #180 (Div. 2)|2|\n|<ul><li>- [ ] Done</li></ul>|145|[Polo the Penguin and Strings](http://codeforces.com/problemset/problem/288/A)|Codeforces||Codeforces Round #177 (Div. 1) & Codeforces Round #177 (Div. 2)|2|\n|<ul><li>- [ ] Done</li></ul>|146|[k-Multiple Free Set](http://codeforces.com/problemset/problem/274/A)|Codeforces||Codeforces Round #168 (Div. 1) & Codeforces Round #168 (Div. 2)|2|\n|<ul><li>- [ ] Done</li></ul>|147|[Squares](http://codeforces.com/problemset/problem/263/B)|Codeforces||Codeforces Round #161 (Div. 2)|2|\n|<ul><li>- [ ] Done</li></ul>|148|[Alice, Bob and Chocolate](http://codeforces.com/problemset/problem/6/C)|Codeforces||Codeforces Beta Round #6 (Div. 2 Only)|2|\n|<ul><li>- [ ] Done</li></ul>|149|[Removing Columns](http://codeforces.com/problemset/problem/496/C)|Codeforces||Codeforces Round #283 (Div. 2) & Codeforces Round #283 (Div. 1)|2|\n|<ul><li>- [ ] Done</li></ul>|150|[Fox And Names](http://codeforces.com/problemset/problem/510/C)|Codeforces||Codeforces Round #290 (Div. 2) & Codeforces Round #290 (Div. 1)|2|\n|<ul><li>- [ ] Done</li></ul>|151|[Milk Scheduling](http://www.spoj.com/problems/MSCHED/)|SPOJ|||2|\n|<ul><li>- [ ] Done</li></ul>|152|[Little Elephant and Music](http://www.codechef.com/problems/LEMUSIC)|CodeChef|||2|\n|<ul><li>- [ ] Done</li></ul>|153|[Planning](http://codeforces.com/problemset/problem/853/A)|Codeforces||Codeforces Round #433 (Div. 1, based on Olympiad of Metropolises) & Codeforces Round #433 (Div. 2, based on Olympiad of Metropolises)|2|\n|<ul><li>- [ ] Done</li></ul>|154|[Leha and Function](http://codeforces.com/problemset/problem/840/A)|Codeforces||Codeforces Round #429 (Div. 1) & Codeforces Round #429 (Div. 2)|2|\n|<ul><li>- [ ] Done</li></ul>|155|[String Game](http://codeforces.com/problemset/problem/778/A)|Codeforces||Codeforces Round #402 (Div. 1) & Codeforces Round #402 (Div. 2)|2|\n|<ul><li>- [ ] Done</li></ul>|156|[Alyona and mex](http://codeforces.com/problemset/problem/739/A)|Codeforces||Codeforces Round #381 (Div. 1) & Codeforces Round #381 (Div. 2)|2|\n|<ul><li>- [ ] Done</li></ul>|157|[Pride](http://codeforces.com/problemset/problem/891/A)|Codeforces||Codeforces Round #446 (Div. 1) & Codeforces Round #446 (Div. 2)|2|\n|<ul><li>- [ ] Done</li></ul>|158|[Valued Keys](http://codeforces.com/problemset/problem/801/B)|Codeforces||Codeforces Round #409 (rated, Div. 2, based on VK Cup 2017 Round 2)|2|\n|<ul><li>- [ ] Done</li></ul>|159|[Urbanization](http://codeforces.com/problemset/problem/735/B)|Codeforces||Codeforces Round #382 (Div. 2)|2|\n|<ul><li>- [ ] Done</li></ul>|160|[Game of Credit Cards](http://codeforces.com/problemset/problem/777/B)|Codeforces||Codeforces Round #401 (Div. 2)|2|\n|<ul><li>- [ ] Done</li></ul>|161|[Lesha and array splitting](http://codeforces.com/problemset/problem/754/A)|Codeforces||Codeforces Round #390 (Div. 2)|2|\n|<ul><li>- [ ] Done</li></ul>|162|[Summer sell-off](http://codeforces.com/problemset/problem/810/B)|Codeforces||Codeforces Round #415 (Div. 2)|2|\n|<ul><li>- [ ] Done</li></ul>|163|[Not Afraid](http://codeforces.com/problemset/problem/787/B)|Codeforces||Codeforces Round #406 (Div. 2)|2|\n|<ul><li>- [ ] Done</li></ul>|164|[Our Tanya is Crying Out Loud](http://codeforces.com/problemset/problem/940/B)|Codeforces||Codeforces Round #466 (Div. 2)|2|\n|<ul><li>- [ ] Done</li></ul>|165|[Conan and Agasa play a Card Game](http://codeforces.com/problemset/problem/914/B)|Codeforces||Codecraft-18 and Codeforces Round #458 (Div. 1 + Div. 2, combined)|2|\n|<ul><li>- [ ] Done</li></ul>|166|[Coin Collector](https://uva.onlinejudge.org/index.php?option=onlinejudge&page=show_problem&problem=2231)|UVA|||2|\n|<ul><li>- [ ] Done</li></ul>|167|[Color Stripe](http://codeforces.com/problemset/problem/219/C)|Codeforces||Codeforces Round #135 (Div. 2)|3|\n|<ul><li>- [ ] Done</li></ul>|168|[Photographer](http://codeforces.com/problemset/problem/203/C)|Codeforces||Codeforces Round #128 (Div. 2)|3|\n|<ul><li>- [ ] Done</li></ul>|169|[LLPS](http://codeforces.com/problemset/problem/202/A)|Codeforces||Codeforces Round #127 (Div. 2)|3|\n|<ul><li>- [ ] Done</li></ul>|170|[Lexicographically Maximum Subsequence](http://codeforces.com/problemset/problem/196/A)|Codeforces||Codeforces Round #124 (Div. 1) & Codeforces Round #124 (Div. 2)|3|\n|<ul><li>- [ ] Done</li></ul>|171|[Vasya and the Bus](http://codeforces.com/problemset/problem/190/A)|Codeforces||Codeforces Round #120 (Div. 2)|3|\n|<ul><li>- [ ] Done</li></ul>|172|[Median](http://codeforces.com/problemset/problem/166/C)|Codeforces||Codeforces Round #113 (Div. 2)|3|\n|<ul><li>- [ ] Done</li></ul>|173|[Dress'em in Vests!](http://codeforces.com/problemset/problem/161/A)|Codeforces||VK Cup 2012 Round 1|3|\n|<ul><li>- [ ] Done</li></ul>|174|[Ternary Logic](http://codeforces.com/problemset/problem/136/B)|Codeforces||Codeforces Beta Round #97 (Div. 2)|3|\n|<ul><li>- [ ] Done</li></ul>|175|[Petya and Inequiations](http://codeforces.com/problemset/problem/111/A)|Codeforces||Codeforces Beta Round #85 (Div. 1 Only) & Codeforces Beta Round #85 (Div. 2 Only)|3|\n|<ul><li>- [ ] Done</li></ul>|176|[Testing Pants for Sadness](http://codeforces.com/problemset/problem/103/A)|Codeforces||Codeforces Beta Round #80 (Div. 1 Only) & Codeforces Beta Round #80 (Div. 2 Only)|3|\n|<ul><li>- [ ] Done</li></ul>|177|[Regular Bracket Sequence](http://codeforces.com/problemset/problem/26/B)|Codeforces||Codeforces Beta Round #26 (Codeforces format)|3|\n|<ul><li>- [ ] Done</li></ul>|178|[Burglar and Matches](http://codeforces.com/problemset/problem/16/B)|Codeforces||Codeforces Beta Round #16 (Div. 2 Only)|3|\n|<ul><li>- [ ] Done</li></ul>|179|[Longest Regular Bracket Sequence](http://codeforces.com/problemset/problem/5/C)|Codeforces||Codeforces Beta Round #5|3|\n|<ul><li>- [ ] Done</li></ul>|180|[Greedy Hydra](http://www.spoj.com/problems/DRAGON/)|SPOJ|||3|\n|<ul><li>- [ ] Done</li></ul>|181|[Football](https://uva.onlinejudge.org/index.php?option=onlinejudge&page=show_problem&problem=4411)|UVA|||3|\n|<ul><li>- [ ] Done</li></ul>|182|[Catch Me If You Can ](http://www.spoj.com/problems/CMIYC/)|SPOJ|||3|\n|<ul><li>- [ ] Done</li></ul>|183|[Ilya and Matrix](http://codeforces.com/problemset/problem/313/C)|Codeforces||Codeforces Round #186 (Div. 2)|3|\n|<ul><li>- [ ] Done</li></ul>|184|[Sockets](http://codeforces.com/problemset/problem/257/A)|Codeforces||Codeforces Round #159 (Div. 2)|3|\n|<ul><li>- [ ] Done</li></ul>|185|[Simple Strings](http://codeforces.com/problemset/problem/665/C)|Codeforces||Educational Codeforces Round 12|3|\n|<ul><li>- [ ] Done</li></ul>|186|[Co-prime Array](http://codeforces.com/problemset/problem/660/A)|Codeforces||Educational Codeforces Round 11|3|\n|<ul><li>- [ ] Done</li></ul>|187|[New Reform](http://codeforces.com/problemset/problem/659/E)|Codeforces||Codeforces Round #346 (Div. 2)|3|\n|<ul><li>- [ ] Done</li></ul>|188|[Bear and String Distance](http://codeforces.com/problemset/problem/628/C)|Codeforces||Educational Codeforces Round 8|3|\n|<ul><li>- [ ] Done</li></ul>|189|[Block Towers](http://codeforces.com/problemset/problem/626/C)|Codeforces||8VC Venture Cup 2016 - Elimination Round|3|\n|<ul><li>- [ ] Done</li></ul>|190|[Pearls in a Row](http://codeforces.com/problemset/problem/620/C)|Codeforces||Educational Codeforces Round 6|3|\n|<ul><li>- [ ] Done</li></ul>|191|[Marina and Vasya](http://codeforces.com/problemset/problem/584/C)|Codeforces||Codeforces Round #324 (Div. 2)|3|\n|<ul><li>- [ ] Done</li></ul>|192|[\"Or\" Game](http://codeforces.com/problemset/problem/578/B)|Codeforces||Codeforces Round #320 (Div. 1) [Bayan Thanks-Round] & Codeforces Round #320 (Div. 2) [Bayan Thanks-Round]|3|\n|<ul><li>- [ ] Done</li></ul>|193|[Order Book](http://codeforces.com/problemset/problem/572/B)|Codeforces||Codeforces Round #317 [AimFund Thanks-Round] (Div. 2)|3|\n|<ul><li>- [ ] Done</li></ul>|194|[Vanya and Scales](http://codeforces.com/problemset/problem/552/C)|Codeforces||Codeforces Round #308 (Div. 2)|3|\n|<ul><li>- [ ] Done</li></ul>|195|[School Marks](http://codeforces.com/problemset/problem/540/B)|Codeforces||Codeforces Round #301 (Div. 2)|3|\n|<ul><li>- [ ] Done</li></ul>|196|[Error Correct System](http://codeforces.com/problemset/problem/527/B)|Codeforces||Codeforces Round #296 (Div. 2)|3|\n|<ul><li>- [ ] Done</li></ul>|197|[Om Nom and Dark Park](http://codeforces.com/problemset/problem/526/B)|Codeforces||ZeptoLab Code Rush 2015|3|\n|<ul><li>- [ ] Done</li></ul>|198|[Ilya and Sticks](http://codeforces.com/problemset/problem/525/C)|Codeforces||Codeforces Round #297 (Div. 2)|3|\n|<ul><li>- [ ] Done</li></ul>|199|[Anya and Ghosts](http://codeforces.com/problemset/problem/508/C)|Codeforces||Codeforces Round #288 (Div. 2)|3|\n|<ul><li>- [ ] Done</li></ul>|200|[Misha and Forest](http://codeforces.com/problemset/problem/501/C)|Codeforces||Codeforces Round #285 (Div. 2) & Codeforces Round #285 (Div. 1)|3|\n|<ul><li>- [ ] Done</li></ul>|201|[Treasure](http://codeforces.com/problemset/problem/494/A)|Codeforces||Codeforces Round #282 (Div. 1) & Codeforces Round #282 (Div. 2)|3|\n|<ul><li>- [ ] Done</li></ul>|202|[Long Jumps](http://codeforces.com/problemset/problem/479/D)|Codeforces||Codeforces Round #274 (Div. 2) & Codeforces Round #274 (Div. 1)|3|\n|<ul><li>- [ ] Done</li></ul>|203|[No to Palindromes!](http://codeforces.com/problemset/problem/464/A)|Codeforces||Codeforces Round #265 (Div. 1) & Codeforces Round #265 (Div. 2)|3|\n|<ul><li>- [ ] Done</li></ul>|204|[Gargari and Bishops](http://codeforces.com/problemset/problem/463/C)|Codeforces||Codeforces Round #264 (Div. 2)|3|\n|<ul><li>- [ ] Done</li></ul>|205|[Present](http://codeforces.com/problemset/problem/460/C)|Codeforces||Codeforces Round #262 (Div. 2)|3|\n|<ul><li>- [ ] Done</li></ul>|206|[Painting Fence](http://codeforces.com/problemset/problem/448/C)|Codeforces||Codeforces Round #256 (Div. 2)|3|\n|<ul><li>- [ ] Done</li></ul>|207|[Andrey and Problem](http://codeforces.com/problemset/problem/442/B)|Codeforces||Codeforces Round #253 (Div. 1) & Codeforces Round #253 (Div. 2)|3|\n|<ul><li>- [ ] Done</li></ul>|208|[Valera and Fruits](http://codeforces.com/problemset/problem/441/B)|Codeforces||Codeforces Round #252 (Div. 2)|3|\n|<ul><li>- [ ] Done</li></ul>|209|[The Child and Set](http://codeforces.com/problemset/problem/437/B)|Codeforces||Codeforces Round #250 (Div. 2)|3|\n|<ul><li>- [ ] Done</li></ul>|210|[Pasha Maximizes](http://codeforces.com/problemset/problem/435/B)|Codeforces||Codeforces Round #249 (Div. 2)|3|\n|<ul><li>- [ ] Done</li></ul>|211|[Megacity](http://codeforces.com/problemset/problem/424/B)|Codeforces||Codeforces Round #242 (Div. 2)|3|\n|<ul><li>- [ ] Done</li></ul>|212|[Booking System](http://codeforces.com/problemset/problem/416/C)|Codeforces||Codeforces Round #241 (Div. 2)|3|\n|<ul><li>- [ ] Done</li></ul>|213|[Guess a number!](http://codeforces.com/problemset/problem/416/A)|Codeforces||Codeforces Round #241 (Div. 2)|3|\n|<ul><li>- [ ] Done</li></ul>|214|[Mashmokh and Tokens](http://codeforces.com/problemset/problem/415/B)|Codeforces||Codeforces Round #240 (Div. 2)|3|\n|<ul><li>- [ ] Done</li></ul>|215|[Nuts](http://codeforces.com/problemset/problem/402/A)|Codeforces||Codeforces Round #236 (Div. 2)|3|\n|<ul><li>- [ ] Done</li></ul>|216|[Sereja and Contests](http://codeforces.com/problemset/problem/401/B)|Codeforces||Codeforces Round #235 (Div. 2)|3|\n|<ul><li>- [ ] Done</li></ul>|217|[Milking cows](http://codeforces.com/problemset/problem/383/A)|Codeforces||Codeforces Round #225 (Div. 1) & Codeforces Round #225 (Div. 2)|3|\n|<ul><li>- [ ] Done</li></ul>|218|[Sereja and Stairs](http://codeforces.com/problemset/problem/381/B)|Codeforces||Codeforces Round #223 (Div. 2)|3|\n|<ul><li>- [ ] Done</li></ul>|219|[Vasya and Public Transport](http://codeforces.com/problemset/problem/355/B)|Codeforces||Codeforces Round #206 (Div. 2)|3|\n|<ul><li>- [ ] Done</li></ul>|220|[Vasya and Robot](http://codeforces.com/problemset/problem/354/A)|Codeforces||Codeforces Round #206 (Div. 1) & Codeforces Round #206 (Div. 2)|3|\n|<ul><li>- [ ] Done</li></ul>|221|[Bombs](http://codeforces.com/problemset/problem/350/C)|Codeforces||Codeforces Round #203 (Div. 2)|3|\n|<ul><li>- [ ] Done</li></ul>|222|[Xenia and Weights](http://codeforces.com/problemset/problem/339/C)|Codeforces||Codeforces Round #197 (Div. 2)|3|\n|<ul><li>- [ ] Done</li></ul>|223|[Quiz](http://codeforces.com/problemset/problem/337/C)|Codeforces||Codeforces Round #196 (Div. 2) & Codeforces Round #196 (Div. 1)|3|\n|<ul><li>- [ ] Done</li></ul>|224|[Routine Problem](http://codeforces.com/problemset/problem/337/B)|Codeforces||Codeforces Round #196 (Div. 2)|3|\n|<ul><li>- [ ] Done</li></ul>|225|[Secrets](http://codeforces.com/problemset/problem/333/A)|Codeforces||Codeforces Round #194 (Div. 1) & Codeforces Round #194 (Div. 2)|3|\n|<ul><li>- [ ] Done</li></ul>|226|[Purification](http://codeforces.com/problemset/problem/329/A)|Codeforces||Codeforces Round #192 (Div. 1) & Codeforces Round #192 (Div. 2)|3|\n|<ul><li>- [ ] Done</li></ul>|227|[Snow Footprints](http://codeforces.com/problemset/problem/298/A)|Codeforces||Codeforces Round #180 (Div. 2)|3|\n|<ul><li>- [ ] Done</li></ul>|228|[Little Girl and Maximum XOR](http://codeforces.com/problemset/problem/276/D)|Codeforces||Codeforces Round #169 (Div. 2)|3|\n|<ul><li>- [ ] Done</li></ul>|229|[Multithreading](http://codeforces.com/problemset/problem/270/B)|Codeforces||Codeforces Round #165 (Div. 2)|3|\n|<ul><li>- [ ] Done</li></ul>|230|[Roma and Changing Signs](http://codeforces.com/problemset/problem/262/B)|Codeforces||Codeforces Round #160 (Div. 2)|3|\n|<ul><li>- [ ] Done</li></ul>|231|[Maxim and Discounts](http://codeforces.com/problemset/problem/261/A)|Codeforces||Codeforces Round #160 (Div. 1) & Codeforces Round #160 (Div. 2)|3|\n|<ul><li>- [ ] Done</li></ul>|232|[Playing Cubes](http://codeforces.com/problemset/problem/257/B)|Codeforces||Codeforces Round #159 (Div. 2)|3|\n|<ul><li>- [ ] Done</li></ul>|233|[Dice Tower](http://codeforces.com/problemset/problem/225/A)|Codeforces||Codeforces Round #139 (Div. 2)|3|\n|<ul><li>- [ ] Done</li></ul>|234|[DNA Alignment](http://codeforces.com/problemset/problem/520/C)|Codeforces||Codeforces Round #295 (Div. 2) & Codeforces Round #295 (Div. 1)|3|\n|<ul><li>- [ ] Done</li></ul>|235|[Recycling Bottles](http://codeforces.com/problemset/problem/671/A)|Codeforces||Codeforces Round #352 (Div. 1) & Codeforces Round #352 (Div. 2)|3|\n|<ul><li>- [ ] Done</li></ul>|236|[Heap Operations](http://codeforces.com/problemset/problem/681/C)|Codeforces||Codeforces Round #357 (Div. 2)|3|\n|<ul><li>- [ ] Done</li></ul>|237|[Santa Claus and Robot](http://codeforces.com/problemset/problem/748/C)|Codeforces||Technocup 2017 - Elimination Round 3|3|\n|<ul><li>- [ ] Done</li></ul>|238|[Karen and Game](http://codeforces.com/problemset/problem/815/A)|Codeforces||Codeforces Round #419 (Div. 1) & Codeforces Round #419 (Div. 2)|3|\n|<ul><li>- [ ] Done</li></ul>|239|[Memory and De-Evolution](http://codeforces.com/problemset/problem/712/C)|Codeforces||Codeforces Round #370 (Div. 2)|3|\n|<ul><li>- [ ] Done</li></ul>|240|[Voting](http://codeforces.com/problemset/problem/749/C)|Codeforces||Codeforces Round #388 (Div. 2)|3|\n|<ul><li>- [ ] Done</li></ul>|241|[Cloud of Hashtags](http://codeforces.com/problemset/problem/777/D)|Codeforces||Codeforces Round #401 (Div. 2)|3|\n|<ul><li>- [ ] Done</li></ul>|242|[Mike and gcd problem](http://codeforces.com/problemset/problem/798/C)|Codeforces||Codeforces Round #410 (Div. 2)|3|\n|<ul><li>- [ ] Done</li></ul>|243|[Palindromes](https://icpcarchive.ecs.baylor.edu/index.php?option=onlinejudge&page=show_problem&problem=3486)|Live Archive|1995|North America - South Central USA|3|\n|<ul><li>- [ ] Done</li></ul>|244|[Paper Work](http://codeforces.com/problemset/problem/250/A)|Codeforces||CROC-MBTU 2012, Final Round (Online version, Div. 2)|4|\n|<ul><li>- [ ] Done</li></ul>|245|[Magic, Wizardry and Wonders](http://codeforces.com/problemset/problem/231/B)|Codeforces||Codeforces Round #143 (Div. 2)|4|\n|<ul><li>- [ ] Done</li></ul>|246|[Well-known Numbers](http://codeforces.com/problemset/problem/225/B)|Codeforces||Codeforces Round #139 (Div. 2)|4|\n|<ul><li>- [ ] Done</li></ul>|247|[Olympic Medal](http://codeforces.com/problemset/problem/215/B)|Codeforces||Codeforces Round #132 (Div. 2)|4|\n|<ul><li>- [ ] Done</li></ul>|248|[Hometask](http://codeforces.com/problemset/problem/214/B)|Codeforces||Codeforces Round #131 (Div. 2)|4|\n|<ul><li>- [ ] Done</li></ul>|249|[Little Elephant and Sorting](http://codeforces.com/problemset/problem/205/B)|Codeforces||Codeforces Round #129 (Div. 2)|4|\n|<ul><li>- [ ] Done</li></ul>|250|[Growing Mushrooms](http://codeforces.com/problemset/problem/186/B)|Codeforces||Codeforces Round #118 (Div. 2)|4|\n|<ul><li>- [ ] Done</li></ul>|251|[Matchmaker](http://codeforces.com/problemset/problem/159/B)|Codeforces||VK Cup 2012 Qualification Round 2|4|\n|<ul><li>- [ ] Done</li></ul>|252|[Friends or Not](http://codeforces.com/problemset/problem/159/A)|Codeforces||VK Cup 2012 Qualification Round 2|4|\n|<ul><li>- [ ] Done</li></ul>|253|[Hometask](http://codeforces.com/problemset/problem/154/A)|Codeforces||Codeforces Round #109 (Div. 1) & Codeforces Round #109 (Div. 2)|4|\n|<ul><li>- [ ] Done</li></ul>|254|[Division into Teams](http://codeforces.com/problemset/problem/149/C)|Codeforces||Codeforces Round #106 (Div. 2)|4|\n|<ul><li>- [ ] Done</li></ul>|255|[New Year Snowmen](http://codeforces.com/problemset/problem/140/C)|Codeforces||Codeforces Round #100|4|\n|<ul><li>- [ ] Done</li></ul>|256|[Homework](http://codeforces.com/problemset/problem/101/A)|Codeforces||Codeforces Beta Round #79 (Div. 1 Only) & Codeforces Beta Round #79 (Div. 2 Only)|4|\n|<ul><li>- [ ] Done</li></ul>|257|[Binary Number](http://codeforces.com/problemset/problem/92/B)|Codeforces||Codeforces Beta Round #75 (Div. 2 Only)|4|\n|<ul><li>- [ ] Done</li></ul>|258|[Cableway](http://codeforces.com/problemset/problem/90/A)|Codeforces||Codeforces Beta Round #74 (Div. 2 Only)|4|\n|<ul><li>- [ ] Done</li></ul>|259|[Bus Game](http://codeforces.com/problemset/problem/79/A)|Codeforces||Codeforces Beta Round #71|4|\n|<ul><li>- [ ] Done</li></ul>|260|[A Student's Dream](http://codeforces.com/problemset/problem/62/A)|Codeforces||Codeforces Beta Round #58|4|\n|<ul><li>- [ ] Done</li></ul>|261|[Eternal Victory](http://codeforces.com/problemset/problem/61/D)|Codeforces||Codeforces Beta Round #57 (Div. 2)|4|\n|<ul><li>- [ ] Done</li></ul>|262|[Lucky Tickets](http://codeforces.com/problemset/problem/43/C)|Codeforces||Codeforces Beta Round #42 (Div. 2)|4|\n|<ul><li>- [ ] Done</li></ul>|263|[You're Given a String...](http://codeforces.com/problemset/problem/23/A)|Codeforces||Codeforces Beta Round #23|4|\n|<ul><li>- [ ] Done</li></ul>|264|[Lorry](http://codeforces.com/problemset/problem/3/B)|Codeforces||Codeforces Beta Round #3|4|\n|<ul><li>- [ ] Done</li></ul>|265|[INVITATION FOR TECHOFES](http://www.spoj.com/problems/TECHOFES/)|SPOJ|||4|\n|<ul><li>- [ ] Done</li></ul>|266|[Jersey Politics](http://poj.org/problem?id=2454)|PKU|||4|\n|<ul><li>- [ ] Done</li></ul>|267|[Troops of Sand Monsters](http://www.spoj.com/problems/TROOPS/)|SPOJ|||4|\n|<ul><li>- [ ] Done</li></ul>|268|[Two Semiknights Meet](http://codeforces.com/problemset/problem/362/A)|Codeforces||Codeforces Round #212 (Div. 2)|4|\n|<ul><li>- [ ] Done</li></ul>|269|[Subtraction](p?ID=129)|A2 Online Judge|||4|\n|<ul><li>- [ ] Done</li></ul>|270|[K-Palindrome](p?ID=276)|A2 Online Judge|||4|\n|<ul><li>- [ ] Done</li></ul>|271|[Rebus](http://codeforces.com/problemset/problem/663/A)|Codeforces||Codeforces Round #347 (Div. 1) & Codeforces Round #347 (Div. 2)|4|\n|<ul><li>- [ ] Done</li></ul>|272|[Mischievous Mess Makers](http://codeforces.com/problemset/problem/645/B)|Codeforces||CROC 2016 - Elimination Round|4|\n|<ul><li>- [ ] Done</li></ul>|273|[Make Palindrome](http://codeforces.com/problemset/problem/600/C)|Codeforces||Educational Codeforces Round 2|4|\n|<ul><li>- [ ] Done</li></ul>|274|[Amr and Chemistry](http://codeforces.com/problemset/problem/558/C)|Codeforces||Codeforces Round #312 (Div. 2)|4|\n|<ul><li>- [ ] Done</li></ul>|275|[Arthur and Table](http://codeforces.com/problemset/problem/557/C)|Codeforces||Codeforces Round #311 (Div. 2)|4|\n|<ul><li>- [ ] Done</li></ul>|276|[Case of Fugitive](http://codeforces.com/problemset/problem/555/B)|Codeforces||Codeforces Round #310 (Div. 1) & Codeforces Round #310 (Div. 2)|4|\n|<ul><li>- [ ] Done</li></ul>|277|[GukiZ hates Boxes](http://codeforces.com/problemset/problem/551/C)|Codeforces||Codeforces Round #307 (Div. 2)|4|\n|<ul><li>- [ ] Done</li></ul>|278|[Paths and Trees](http://codeforces.com/problemset/problem/545/E)|Codeforces||Codeforces Round #303 (Div. 2)|4|\n|<ul><li>- [ ] Done</li></ul>|279|[Tavas and Malekas](http://codeforces.com/problemset/problem/535/D)|Codeforces||Codeforces Round #299 (Div. 2) & Codeforces Round #299 (Div. 1)|4|\n|<ul><li>- [ ] Done</li></ul>|280|[Clique Problem](http://codeforces.com/problemset/problem/527/D)|Codeforces||Codeforces Round #296 (Div. 2) & Codeforces Round #296 (Div. 1)|4|\n|<ul><li>- [ ] Done</li></ul>|281|[Drazil and Tiles](http://codeforces.com/problemset/problem/515/D)|Codeforces||Codeforces Round #292 (Div. 2) & Codeforces Round #292 (Div. 1)|4|\n|<ul><li>- [ ] Done</li></ul>|282|[Dreamoon and Sets](http://codeforces.com/problemset/problem/476/D)|Codeforces||Codeforces Round #272 (Div. 2) & Codeforces Round #272 (Div. 1)|4|\n|<ul><li>- [ ] Done</li></ul>|283|[MUH and House of Cards](http://codeforces.com/problemset/problem/471/C)|Codeforces||Codeforces Round #269 (Div. 2)|4|\n|<ul><li>- [ ] Done</li></ul>|284|[Two Sets](http://codeforces.com/problemset/problem/468/B)|Codeforces||Codeforces Round #268 (Div. 1) & Codeforces Round #268 (Div. 2)|4|\n|<ul><li>- [ ] Done</li></ul>|285|[DZY Loves Modification](http://codeforces.com/problemset/problem/446/B)|Codeforces||Codeforces Round #255 (Div. 1) & Codeforces Round #255 (Div. 2)|4|\n|<ul><li>- [ ] Done</li></ul>|286|[DZY Loves Physics](http://codeforces.com/problemset/problem/444/A)|Codeforces||Codeforces Round #254 (Div. 1) & Codeforces Round #254 (Div. 2)|4|\n|<ul><li>- [ ] Done</li></ul>|287|[Feed with Candy](http://codeforces.com/problemset/problem/436/A)|Codeforces||Zepto Code Rush 2014|4|\n|<ul><li>- [ ] Done</li></ul>|288|[Network Configuration](http://codeforces.com/problemset/problem/412/B)|Codeforces||Coder-Strike 2014 - Round 1|4|\n|<ul><li>- [ ] Done</li></ul>|289|[Poster](http://codeforces.com/problemset/problem/412/A)|Codeforces||Coder-Strike 2014 - Round 1|4|\n|<ul><li>- [ ] Done</li></ul>|290|[Toy Sum](http://codeforces.com/problemset/problem/405/D)|Codeforces||Codeforces Round #238 (Div. 2) & Codeforces Round #238 (Div. 1)|4|\n|<ul><li>- [ ] Done</li></ul>|291|[Multitasking](http://codeforces.com/problemset/problem/384/B)|Codeforces||Codeforces Round #225 (Div. 2)|4|\n|<ul><li>- [ ] Done</li></ul>|292|[Inna and Nine](http://codeforces.com/problemset/problem/374/B)|Codeforces||Codeforces Round #220 (Div. 2)|4|\n|<ul><li>- [ ] Done</li></ul>|293|[Jeff and Rounding](http://codeforces.com/problemset/problem/351/A)|Codeforces||Codeforces Round #204 (Div. 1) & Codeforces Round #204 (Div. 2)|4|\n|<ul><li>- [ ] Done</li></ul>|294|[Xenia and Spies](http://codeforces.com/problemset/problem/342/B)|Codeforces||Codeforces Round #199 (Div. 2)|4|\n|<ul><li>- [ ] Done</li></ul>|295|[Ciel the Commander](http://codeforces.com/problemset/problem/321/C)|Codeforces||Codeforces Round #190 (Div. 1) & Codeforces Round #190 (Div. 2)|4|\n|<ul><li>- [ ] Done</li></ul>|296|[Special Task](http://codeforces.com/problemset/problem/316/A1)|Codeforces||ABBYY Cup 3.0|4|\n|<ul><li>- [ ] Done</li></ul>|297|[Fish Weight](http://codeforces.com/problemset/problem/297/B)|Codeforces||Codeforces Round #180 (Div. 1) & Codeforces Round #180 (Div. 2)|4|\n|<ul><li>- [ ] Done</li></ul>|298|[Shaass and Bookshelf](http://codeforces.com/problemset/problem/294/B)|Codeforces||Codeforces Round #178 (Div. 2)|4|\n|<ul><li>- [ ] Done</li></ul>|299|[Zero Tree](http://codeforces.com/problemset/problem/274/B)|Codeforces||Codeforces Round #168 (Div. 1) & Codeforces Round #168 (Div. 2)|4|\n|<ul><li>- [ ] Done</li></ul>|300|[Magical Boxes](http://codeforces.com/problemset/problem/269/A)|Codeforces||Codeforces Round #165 (Div. 1) & Codeforces Round #165 (Div. 2)|4|\n|<ul><li>- [ ] Done</li></ul>|301|[Tournament](http://codeforces.com/problemset/problem/27/B)|Codeforces||Codeforces Beta Round #27 (Codeforces format, Div. 2)|4|\n|<ul><li>- [ ] Done</li></ul>|302|[Robin Hood](http://codeforces.com/problemset/problem/671/B)|Codeforces||Codeforces Round #352 (Div. 1) & Codeforces Round #352 (Div. 2)|4|\n|<ul><li>- [ ] Done</li></ul>|303|[Money Transfers](http://codeforces.com/problemset/problem/675/C)|Codeforces||Codeforces Round #353 (Div. 2)|4|\n|<ul><li>- [ ] Done</li></ul>|304|[Office Keys](http://codeforces.com/problemset/problem/830/A)|Codeforces||Codeforces Round #424 (Div. 1, rated, based on VK Cup Finals) & Codeforces Round #424 (Div. 2, rated, based on VK Cup Finals)|4|\n|<ul><li>- [ ] Done</li></ul>|305|[Garland](http://codeforces.com/problemset/problem/767/C)|Codeforces||Codeforces Round #398 (Div. 2)|4|\n|<ul><li>- [ ] Done</li></ul>|306|[Game of the Rows](http://codeforces.com/problemset/problem/839/B)|Codeforces||Codeforces Round #428 (Div. 2)|4|\n|<ul><li>- [ ] Done</li></ul>|307|[Text Editor](http://codeforces.com/problemset/problem/253/C)|Codeforces||Codeforces Round #154 (Div. 2)|5|\n|<ul><li>- [ ] Done</li></ul>|308|[Beauty Pageant](http://codeforces.com/problemset/problem/246/C)|Codeforces||Codeforces Round #151 (Div. 2)|5|\n|<ul><li>- [ ] Done</li></ul>|309|[Restoring Table](http://codeforces.com/problemset/problem/245/D)|Codeforces||CROC-MBTU 2012, Elimination Round (ACM-ICPC)|5|\n|<ul><li>- [ ] Done</li></ul>|310|[Old Peykan](http://codeforces.com/problemset/problem/241/A)|Codeforces||Bayan 2012-2013 Elimination Round (ACM ICPC Rules, English statements)|5|\n|<ul><li>- [ ] Done</li></ul>|311|[Cycles](http://codeforces.com/problemset/problem/232/A)|Codeforces||Codeforces Round #144 (Div. 1) & Codeforces Round #144 (Div. 2)|5|\n|<ul><li>- [ ] Done</li></ul>|312|[Olympiad](http://codeforces.com/problemset/problem/222/D)|Codeforces||Codeforces Round #137 (Div. 2)|5|\n|<ul><li>- [ ] Done</li></ul>|313|[Permutations](http://codeforces.com/problemset/problem/187/A)|Codeforces||Codeforces Round #119 (Div. 1) & Codeforces Round #119 (Div. 2)|5|\n|<ul><li>- [ ] Done</li></ul>|314|[Replacing Digits](http://codeforces.com/problemset/problem/169/B)|Codeforces||VK Cup 2012 Round 2 (Unofficial Div. 2 Edition)|5|\n|<ul><li>- [ ] Done</li></ul>|315|[Discounts](http://codeforces.com/problemset/problem/161/B)|Codeforces||VK Cup 2012 Round 1|5|\n|<ul><li>- [ ] Done</li></ul>|316|[Terse princess](http://codeforces.com/problemset/problem/148/C)|Codeforces||Codeforces Round #105 (Div. 2)|5|\n|<ul><li>- [ ] Done</li></ul>|317|[Help General](http://codeforces.com/problemset/problem/142/B)|Codeforces||Codeforces Round #102 (Div. 1) & Codeforces Round #102 (Div. 2)|5|\n|<ul><li>- [ ] Done</li></ul>|318|[Queue](http://codeforces.com/problemset/problem/141/C)|Codeforces||Codeforces Round #101 (Div. 2)|5|\n|<ul><li>- [ ] Done</li></ul>|319|[New Year Contest](http://codeforces.com/problemset/problem/140/D)|Codeforces||Codeforces Round #100|5|\n|<ul><li>- [ ] Done</li></ul>|320|[Spiders](http://codeforces.com/problemset/problem/120/F)|Codeforces||School Regional Team Contest, Saratov, 2011|5|\n|<ul><li>- [ ] Done</li></ul>|321|[Fancy Number](http://codeforces.com/problemset/problem/118/C)|Codeforces||Codeforces Beta Round #89 (Div. 2)|5|\n|<ul><li>- [ ] Done</li></ul>|322|[Lawnmower](http://codeforces.com/problemset/problem/115/B)|Codeforces||Codeforces Beta Round #87 (Div. 1 Only) & Codeforces Beta Round #87 (Div. 2 Only)|5|\n|<ul><li>- [ ] Done</li></ul>|323|[Newspaper Headline](http://codeforces.com/problemset/problem/91/A)|Codeforces||Codeforces Beta Round #75 (Div. 1 Only) & Codeforces Beta Round #75 (Div. 2 Only)|5|\n|<ul><li>- [ ] Done</li></ul>|324|[Bets](http://codeforces.com/problemset/problem/69/B)|Codeforces||Codeforces Beta Round #63 (Div. 2)|5|\n|<ul><li>- [ ] Done</li></ul>|325|[Square Earth?](http://codeforces.com/problemset/problem/57/A)|Codeforces||Codeforces Beta Round #53|5|\n|<ul><li>- [ ] Done</li></ul>|326|[What is for dinner?](http://codeforces.com/problemset/problem/33/A)|Codeforces||Codeforces Beta Round #33 (Codeforces format)|5|\n|<ul><li>- [ ] Done</li></ul>|327|[Hierarchy](http://codeforces.com/problemset/problem/17/B)|Codeforces||Codeforces Beta Round #17|5|\n|<ul><li>- [ ] Done</li></ul>|328|[Least Cost Bracket Sequence](http://codeforces.com/problemset/problem/3/D)|Codeforces||Codeforces Beta Round #3|5|\n|<ul><li>- [ ] Done</li></ul>|329|[Unordered Subsequence](http://codeforces.com/problemset/problem/27/C)|Codeforces||Codeforces Beta Round #27 (Codeforces format, Div. 2)|5|\n|<ul><li>- [ ] Done</li></ul>|330|[Game with Points](http://acm.sgu.ru/problem.php?contest=0&problem=408)|SGU|||5|\n|<ul><li>- [ ] Done</li></ul>|331|[Simple Subset](http://codeforces.com/problemset/problem/665/D)|Codeforces||Educational Codeforces Round 12|5|\n|<ul><li>- [ ] Done</li></ul>|332|[Running with Obstacles](http://codeforces.com/problemset/problem/637/D)|Codeforces||VK Cup 2016 - Qualification Round 1|5|\n|<ul><li>- [ ] Done</li></ul>|333|[Running Track](http://codeforces.com/problemset/problem/615/C)|Codeforces||Codeforces Round #338 (Div. 2)|5|\n|<ul><li>- [ ] Done</li></ul>|334|[Restaurant](http://codeforces.com/problemset/problem/597/B)|Codeforces||Testing Round #12|5|\n|<ul><li>- [ ] Done</li></ul>|335|[Wilbur and Points](http://codeforces.com/problemset/problem/596/C)|Codeforces||Codeforces Round #331 (Div. 2)|5|\n|<ul><li>- [ ] Done</li></ul>|336|[Gourmet and Banquet](http://codeforces.com/problemset/problem/589/F)|Codeforces||2015-2016 ACM-ICPC, NEERC, Southern Subregional Contest (Online Mirror, ACM-ICPC Rules, Teams Preferred)|5|\n|<ul><li>- [ ] Done</li></ul>|337|[Points on Plane](http://codeforces.com/problemset/problem/576/C)|Codeforces||Codeforces Round #319 (Div. 1) & Codeforces Round #319 (Div. 2)|5|\n|<ul><li>- [ ] Done</li></ul>|338|[Minimization](http://codeforces.com/problemset/problem/571/B)|Codeforces||Codeforces Round #317 [AimFund Thanks-Round] (Div. 1) & Codeforces Round #317 [AimFund Thanks-Round] (Div. 2)|5|\n|<ul><li>- [ ] Done</li></ul>|339|[Happy Line](http://codeforces.com/problemset/problem/549/G)|Codeforces||Looksery Cup 2015|5|\n|<ul><li>- [ ] Done</li></ul>|340|[Haar Features](http://codeforces.com/problemset/problem/549/D)|Codeforces||Looksery Cup 2015|5|\n|<ul><li>- [ ] Done</li></ul>|341|[Handshakes](http://codeforces.com/problemset/problem/534/D)|Codeforces||Codeforces Round #298 (Div. 2)|5|\n|<ul><li>- [ ] Done</li></ul>|342|[Correcting Mistakes](http://codeforces.com/problemset/problem/533/E)|Codeforces||VK Cup 2015 - Round 2 (unofficial online mirror, Div. 1 only)|5|\n|<ul><li>- [ ] Done</li></ul>|343|[Board Game](http://codeforces.com/problemset/problem/533/C)|Codeforces||VK Cup 2015 - Round 2 (unofficial online mirror, Div. 1 only)|5|\n|<ul><li>- [ ] Done</li></ul>|344|[Om Nom and Candies](http://codeforces.com/problemset/problem/526/C)|Codeforces||ZeptoLab Code Rush 2015|5|\n|<ul><li>- [ ] Done</li></ul>|345|[Name Quest](http://codeforces.com/problemset/problem/523/C)|Codeforces||VK Cup 2015 - Qualification Round 2|5|\n|<ul><li>- [ ] Done</li></ul>|346|[Sums of Digits](http://codeforces.com/problemset/problem/509/C)|Codeforces||Codeforces Round #289 (Div. 2, ACM ICPC Rules)|5|\n|<ul><li>- [ ] Done</li></ul>|347|[Dungeons and Candies](http://codeforces.com/problemset/problem/436/C)|Codeforces||Zepto Code Rush 2014|5|\n|<ul><li>- [ ] Done</li></ul>|348|[Prime Swaps](http://codeforces.com/problemset/problem/432/C)|Codeforces||Codeforces Round #246 (Div. 2)|5|\n|<ul><li>- [ ] Done</li></ul>|349|[Upgrading Array](http://codeforces.com/problemset/problem/402/D)|Codeforces||Codeforces Round #236 (Div. 2) & Codeforces Round #236 (Div. 1)|5|\n|<ul><li>- [ ] Done</li></ul>|350|[Fox and Card Game](http://codeforces.com/problemset/problem/388/C)|Codeforces||Codeforces Round #228 (Div. 1) & Codeforces Round #228 (Div. 2)|5|\n|<ul><li>- [ ] Done</li></ul>|351|[George and Number](http://codeforces.com/problemset/problem/387/C)|Codeforces||Codeforces Round #227 (Div. 2)|5|\n|<ul><li>- [ ] Done</li></ul>|352|[Preparing for the Contest](http://codeforces.com/problemset/problem/377/B)|Codeforces||Codeforces Round #222 (Div. 1) & Codeforces Round #222 (Div. 2)|5|\n|<ul><li>- [ ] Done</li></ul>|353|[Inna and Pink Pony](http://codeforces.com/problemset/problem/374/A)|Codeforces||Codeforces Round #220 (Div. 2)|5|\n|<ul><li>- [ ] Done</li></ul>|354|[Renting Bikes](http://codeforces.com/problemset/problem/363/D)|Codeforces||Codeforces Round #211 (Div. 2)|5|\n|<ul><li>- [ ] Done</li></ul>|355|[Levko and Array Recovery](http://codeforces.com/problemset/problem/360/A)|Codeforces||Codeforces Round #210 (Div. 1) & Codeforces Round #210 (Div. 2)|5|\n|<ul><li>- [ ] Done</li></ul>|356|[Dima and Hares](http://codeforces.com/problemset/problem/358/D)|Codeforces||Codeforces Round #208 (Div. 2)|5|\n|<ul><li>- [ ] Done</li></ul>|357|[Two Heaps](http://codeforces.com/problemset/problem/353/B)|Codeforces||Codeforces Round #205 (Div. 2)|5|\n|<ul><li>- [ ] Done</li></ul>|358|[Read Time](http://codeforces.com/problemset/problem/343/C)|Codeforces||Codeforces Round #200 (Div. 1) & Codeforces Round #200 (Div. 2)|5|\n|<ul><li>- [ ] Done</li></ul>|359|[Vasily the Bear and Sequence](http://codeforces.com/problemset/problem/336/C)|Codeforces||Codeforces Round #195 (Div. 2)|5|\n|<ul><li>- [ ] Done</li></ul>|360|[Chips](http://codeforces.com/problemset/problem/333/B)|Codeforces||Codeforces Round #194 (Div. 1) & Codeforces Round #194 (Div. 2)|5|\n|<ul><li>- [ ] Done</li></ul>|361|[Ciel and Duel](http://codeforces.com/problemset/problem/321/B)|Codeforces||Codeforces Round #190 (Div. 1) & Codeforces Round #190 (Div. 2)|5|\n|<ul><li>- [ ] Done</li></ul>|362|[Weird Game](http://codeforces.com/problemset/problem/293/A)|Codeforces||Croc Champ 2013 - Round 2|5|\n|<ul><li>- [ ] Done</li></ul>|363|[Parallel Programming](http://codeforces.com/problemset/problem/291/D)|Codeforces||Croc Champ 2013 - Qualification Round|5|\n|<ul><li>- [ ] Done</li></ul>|364|[Balls and Boxes](http://codeforces.com/problemset/problem/260/C)|Codeforces||Codeforces Round #158 (Div. 2)|5|\n|<ul><li>- [ ] Done</li></ul>|365|[Guilty --- to the kitchen!](http://codeforces.com/problemset/problem/42/A)|Codeforces||Codeforces Beta Round #41|5|\n|<ul><li>- [ ] Done</li></ul>|366|[Bear and Tower of Cubes](http://codeforces.com/problemset/problem/679/B)|Codeforces||Codeforces Round #356 (Div. 1) & Codeforces Round #356 (Div. 2)|5|\n|<ul><li>- [ ] Done</li></ul>|367|[Jury Meeting](http://codeforces.com/problemset/problem/853/B)|Codeforces||Codeforces Round #433 (Div. 1, based on Olympiad of Metropolises) & Codeforces Round #433 (Div. 2, based on Olympiad of Metropolises)|5|\n|<ul><li>- [ ] Done</li></ul>|368|[An overnight dance in discotheque](http://codeforces.com/problemset/problem/814/D)|Codeforces||Codeforces Round #418 (Div. 2)|5|\n|<ul><li>- [ ] Done</li></ul>|369|[Hanoi Factory](http://codeforces.com/problemset/problem/777/E)|Codeforces||Codeforces Round #401 (Div. 2)|5|\n|<ul><li>- [ ] Done</li></ul>|370|[Cartons of milk](http://codeforces.com/problemset/problem/767/D)|Codeforces||Codeforces Round #398 (Div. 2)|5|\n|<ul><li>- [ ] Done</li></ul>|371|[The Queue](http://codeforces.com/problemset/problem/767/B)|Codeforces||Codeforces Round #398 (Div. 2)|5|\n|<ul><li>- [ ] Done</li></ul>|372|[Fedor and coupons](http://codeforces.com/problemset/problem/754/D)|Codeforces||Codeforces Round #390 (Div. 2)|5|\n|<ul><li>- [ ] Done</li></ul>|373|[Maxim and Array](http://codeforces.com/problemset/problem/721/D)|Codeforces||Codeforces Round #374 (Div. 2)|5|\n|<ul><li>- [ ] Done</li></ul>|374|[Anagram](http://codeforces.com/problemset/problem/254/C)|Codeforces||Codeforces Round #155 (Div. 2)|6|\n|<ul><li>- [ ] Done</li></ul>|375|[Movie Critics](http://codeforces.com/problemset/problem/250/C)|Codeforces||CROC-MBTU 2012, Final Round (Online version, Div. 2)|6|\n|<ul><li>- [ ] Done</li></ul>|376|[Game with Coins](http://codeforces.com/problemset/problem/245/C)|Codeforces||CROC-MBTU 2012, Elimination Round (ACM-ICPC)|6|\n|<ul><li>- [ ] Done</li></ul>|377|[Dispute](http://codeforces.com/problemset/problem/242/D)|Codeforces||Codeforces Round #149 (Div. 2)|6|\n|<ul><li>- [ ] Done</li></ul>|378|[Towers](http://codeforces.com/problemset/problem/229/D)|Codeforces||Codeforces Round #142 (Div. 1)|6|\n|<ul><li>- [ ] Done</li></ul>|379|[Naughty Stone Piles](http://codeforces.com/problemset/problem/226/B)|Codeforces||Codeforces Round #140 (Div. 1) & Codeforces Round #140 (Div. 2)|6|\n|<ul><li>- [ ] Done</li></ul>|380|[Hiring Staff](http://codeforces.com/problemset/problem/216/C)|Codeforces||Codeforces Round #133 (Div. 2)|6|\n|<ul><li>- [ ] Done</li></ul>|381|[Hot Days](http://codeforces.com/problemset/problem/215/D)|Codeforces||Codeforces Round #132 (Div. 2)|6|\n|<ul><li>- [ ] Done</li></ul>|382|[Game](http://codeforces.com/problemset/problem/213/A)|Codeforces||Codeforces Round #131 (Div. 1) & Codeforces Round #131 (Div. 2)|6|\n|<ul><li>- [ ] Done</li></ul>|383|[Trading Business](http://codeforces.com/problemset/problem/176/A)|Codeforces||Croc Champ 2012 - Round 2|6|\n|<ul><li>- [ ] Done</li></ul>|384|[File List](http://codeforces.com/problemset/problem/174/B)|Codeforces||VK Cup 2012 Round 3 (Unofficial Div. 2 Edition)|6|\n|<ul><li>- [ ] Done</li></ul>|385|[New Year Cards](http://codeforces.com/problemset/problem/140/B)|Codeforces||Codeforces Round #100|6|\n|<ul><li>- [ ] Done</li></ul>|386|[Zero-One](http://codeforces.com/problemset/problem/135/C)|Codeforces||Codeforces Beta Round #97 (Div. 1) & Codeforces Beta Round #97 (Div. 2)|6|\n|<ul><li>- [ ] Done</li></ul>|387|[Robbery](http://codeforces.com/problemset/problem/89/A)|Codeforces||Codeforces Beta Round #74 (Div. 1 Only) & Codeforces Beta Round #74 (Div. 2 Only)|6|\n|<ul><li>- [ ] Done</li></ul>|388|[Beaver](http://codeforces.com/problemset/problem/79/C)|Codeforces||Codeforces Beta Round #71|6|\n|<ul><li>- [ ] Done</li></ul>|389|[Train](http://codeforces.com/problemset/problem/74/B)|Codeforces||Codeforces Beta Round #68|6|\n|<ul><li>- [ ] Done</li></ul>|390|[The Elder Trolls IV: Oblivon](http://codeforces.com/problemset/problem/73/A)|Codeforces||Codeforces Beta Round #66|6|\n|<ul><li>- [ ] Done</li></ul>|391|[Text Messaging](http://codeforces.com/problemset/problem/70/B)|Codeforces||Codeforces Beta Round #64|6|\n|<ul><li>- [ ] Done</li></ul>|392|[Partial Teacher](http://codeforces.com/problemset/problem/67/A)|Codeforces||Manthan 2011|6|\n|<ul><li>- [ ] Done</li></ul>|393|[Harry Potter and the History of Magic](http://codeforces.com/problemset/problem/65/B)|Codeforces||Codeforces Beta Round #60|6|\n|<ul><li>- [ ] Done</li></ul>|394|[Permutations](http://codeforces.com/problemset/problem/48/D)|Codeforces||School Personal Contest #3 (Winter Computer School 2010/11) - Codeforces Beta Round #45 (ACM-ICPC Rules)|6|\n|<ul><li>- [ ] Done</li></ul>|395|[3-cycles](http://codeforces.com/problemset/problem/41/E)|Codeforces||Codeforces Beta Round #40 (Div. 2)|6|\n|<ul><li>- [ ] Done</li></ul>|396|[Company Income Growth](http://codeforces.com/problemset/problem/39/B)|Codeforces||School Team Contest #1 (Winter Computer School 2010/11)|6|\n|<ul><li>- [ ] Done</li></ul>|397|[Animals](http://codeforces.com/problemset/problem/35/D)|Codeforces||Codeforces Beta Round #35 (Div. 2)|6|\n|<ul><li>- [ ] Done</li></ul>|398|[Segments](http://codeforces.com/problemset/problem/22/D)|Codeforces||Codeforces Beta Round #22 (Div. 2 Only)|6|\n|<ul><li>- [ ] Done</li></ul>|399|[Washer, Dryer, Folder](http://codeforces.com/problemset/problem/452/D)|Codeforces||MemSQL Start[c]UP 2.0 - Round 1|6|\n|<ul><li>- [ ] Done</li></ul>|400|[Train Passengers](p?ID=306)|A2 Online Judge|||6|\n|<ul><li>- [ ] Done</li></ul>|401|[Fishing Soldier](p?ID=75)|A2 Online Judge|||6|\n|<ul><li>- [ ] Done</li></ul>|402|[Snakes](p?ID=284)|A2 Online Judge|||6|\n|<ul><li>- [ ] Done</li></ul>|403|[International Olympiad](http://codeforces.com/problemset/problem/662/D)|Codeforces||CROC 2016 - Final Round [Private, For Onsite Finalists Only]|6|\n|<ul><li>- [ ] Done</li></ul>|404|[Table Compression](http://codeforces.com/problemset/problem/650/C)|Codeforces||Codeforces Round #345 (Div. 1) & Codeforces Round #345 (Div. 2)|6|\n|<ul><li>- [ ] Done</li></ul>|405|[Array GCD](http://codeforces.com/problemset/problem/623/B)|Codeforces||AIM Tech Round (Div. 1) & AIM Tech Round (Div. 2)|6|\n|<ul><li>- [ ] Done</li></ul>|406|[Ants in Leaves](http://codeforces.com/problemset/problem/622/E)|Codeforces||Educational Codeforces Round 7|6|\n|<ul><li>- [ ] Done</li></ul>|407|[Anton and Ira](http://codeforces.com/problemset/problem/584/E)|Codeforces||Codeforces Round #324 (Div. 2)|6|\n|<ul><li>- [ ] Done</li></ul>|408|[Invariance of Tree](http://codeforces.com/problemset/problem/576/B)|Codeforces||Codeforces Round #319 (Div. 1) & Codeforces Round #319 (Div. 2)|6|\n|<ul><li>- [ ] Done</li></ul>|409|[Vanya and Brackets](http://codeforces.com/problemset/problem/552/E)|Codeforces||Codeforces Round #308 (Div. 2)|6|\n|<ul><li>- [ ] Done</li></ul>|410|[Brackets in Implications](http://codeforces.com/problemset/problem/550/E)|Codeforces||Codeforces Round #306 (Div. 2)|6|\n|<ul><li>- [ ] Done</li></ul>|411|[Looksery Party](http://codeforces.com/problemset/problem/549/B)|Codeforces||Looksery Cup 2015|6|\n|<ul><li>- [ ] Done</li></ul>|412|[Arthur and Walls](http://codeforces.com/problemset/problem/525/D)|Codeforces||Codeforces Round #297 (Div. 2)|6|\n|<ul><li>- [ ] Done</li></ul>|413|[???? ?? ?????? - 2 (round version)](http://codeforces.com/problemset/problem/524/B)|Codeforces||VK Cup 2015 - Round 1|6|\n|<ul><li>- [ ] Done</li></ul>|414|[Cubes](http://codeforces.com/problemset/problem/520/D)|Codeforces||Codeforces Round #295 (Div. 2) & Codeforces Round #295 (Div. 1)|6|\n|<ul><li>- [ ] Done</li></ul>|415|[Arthur and Brackets](http://codeforces.com/problemset/problem/508/E)|Codeforces||Codeforces Round #288 (Div. 2)|6|\n|<ul><li>- [ ] Done</li></ul>|416|[Distributing Parts ](http://codeforces.com/problemset/problem/496/E)|Codeforces||Codeforces Round #283 (Div. 2)|6|\n|<ul><li>- [ ] Done</li></ul>|417|[Restoring Increasing Sequence](http://codeforces.com/problemset/problem/490/E)|Codeforces||Codeforces Round #279 (Div. 2)|6|\n|<ul><li>- [ ] Done</li></ul>|418|[LIS of Sequence](http://codeforces.com/problemset/problem/486/E)|Codeforces||Codeforces Round #277 (Div. 2)|6|\n|<ul><li>- [ ] Done</li></ul>|419|[Kindergarten](http://codeforces.com/problemset/problem/484/D)|Codeforces||Codeforces Round #276 (Div. 1)|6|\n|<ul><li>- [ ] Done</li></ul>|420|[Artem and Array ](http://codeforces.com/problemset/problem/442/C)|Codeforces||Codeforces Round #253 (Div. 1)|6|\n|<ul><li>- [ ] Done</li></ul>|421|[Police Patrol](http://codeforces.com/problemset/problem/427/E)|Codeforces||Codeforces Round #244 (Div. 2)|6|\n|<ul><li>- [ ] Done</li></ul>|422|[Sereja and Table ](http://codeforces.com/problemset/problem/425/B)|Codeforces||Codeforces Round #243 (Div. 1)|6|\n|<ul><li>- [ ] Done</li></ul>|423|[Cunning Gena](http://codeforces.com/problemset/problem/417/D)|Codeforces||RCC 2014 Warmup (Div. 2) & RCC 2014 Warmup (Div. 1)|6|\n|<ul><li>- [ ] Done</li></ul>|424|[Jeopardy!](http://codeforces.com/problemset/problem/413/C)|Codeforces||Coder-Strike 2014 - Round 2|6|\n|<ul><li>- [ ] Done</li></ul>|425|[Mittens](http://codeforces.com/problemset/problem/370/C)|Codeforces||Codeforces Round #217 (Div. 2)|6|\n|<ul><li>- [ ] Done</li></ul>|426|[Sereja and the Arrangement of Numbers](http://codeforces.com/problemset/problem/367/C)|Codeforces||Codeforces Round #215 (Div. 1) & Codeforces Round #215 (Div. 2)|6|\n|<ul><li>- [ ] Done</li></ul>|427|[Dima and Containers](http://codeforces.com/problemset/problem/358/C)|Codeforces||Codeforces Round #208 (Div. 2)|6|\n|<ul><li>- [ ] Done</li></ul>|428|[Compartments](http://codeforces.com/problemset/problem/356/C)|Codeforces||Codeforces Round #207 (Div. 1) & Codeforces Round #207 (Div. 2)|6|\n|<ul><li>- [ ] Done</li></ul>|429|[Number Transformation II](http://codeforces.com/problemset/problem/346/C)|Codeforces||Codeforces Round #201 (Div. 1) & Codeforces Round #201 (Div. 2)|6|\n|<ul><li>- [ ] Done</li></ul>|430|[Banana](http://codeforces.com/problemset/problem/335/A)|Codeforces||MemSQL start[c]up Round 2 - online version|6|\n|<ul><li>- [ ] Done</li></ul>|431|[Main Sequence](http://codeforces.com/problemset/problem/286/C)|Codeforces||Codeforces Round #176 (Div. 1) & Codeforces Round #176 (Div. 2)|6|\n|<ul><li>- [ ] Done</li></ul>|432|[Beautiful Decomposition](http://codeforces.com/problemset/problem/279/E)|Codeforces||Codeforces Round #171 (Div. 2)|6|\n|<ul><li>- [ ] Done</li></ul>|433|[Below the Diagonal](http://codeforces.com/problemset/problem/266/C)|Codeforces||Codeforces Round #163 (Div. 2)|6|\n|<ul><li>- [ ] Done</li></ul>|434|[Sum](http://codeforces.com/problemset/problem/257/D)|Codeforces||Codeforces Round #159 (Div. 2)|6|\n|<ul><li>- [ ] Done</li></ul>|435|[Wonderful Randomized Sum](http://codeforces.com/problemset/problem/33/C)|Codeforces||Codeforces Beta Round #33 (Codeforces format)|6|\n|<ul><li>- [ ] Done</li></ul>|436|[Trains and Statistic](http://codeforces.com/problemset/problem/675/E)|Codeforces||Codeforces Round #353 (Div. 2)|6|\n|<ul><li>- [ ] Done</li></ul>|437|[Trees](http://codeforces.com/problemset/problem/58/C)|Codeforces||Codeforces Beta Round #54 (Div. 2)|6|\n|<ul><li>- [ ] Done</li></ul>|438|[Ithea Plays With Chtholly](http://codeforces.com/problemset/problem/896/B)|Codeforces||Codeforces Round #449 (Div. 1) & Codeforces Round #449 (Div. 2)|6|\n|<ul><li>- [ ] Done</li></ul>|439|[Divide and conquer](http://acm.sgu.ru/problem.php?contest=0&problem=229)|SGU|||6|\n|<ul><li>- [ ] Done</li></ul>|440|[World Eater Brothers](http://codeforces.com/problemset/problem/238/C)|Codeforces||Codeforces Round #148 (Div. 1) & Codeforces Round #148 (Div. 2)|7|\n|<ul><li>- [ ] Done</li></ul>|441|[Boring Partition](http://codeforces.com/problemset/problem/238/B)|Codeforces||Codeforces Round #148 (Div. 1) & Codeforces Round #148 (Div. 2)|7|\n|<ul><li>- [ ] Done</li></ul>|442|[The table](http://codeforces.com/problemset/problem/226/D)|Codeforces||Codeforces Round #140 (Div. 1)|7|\n|<ul><li>- [ ] Done</li></ul>|443|[Demonstration](http://codeforces.com/problemset/problem/191/B)|Codeforces||Codeforces Round #121 (Div. 1) & Codeforces Round #121 (Div. 2)|7|\n|<ul><li>- [ ] Done</li></ul>|444|[Geometry Horse](http://codeforces.com/problemset/problem/175/C)|Codeforces||Codeforces Round #115|7|\n|<ul><li>- [ ] Done</li></ul>|445|[Zebra Tower](http://codeforces.com/problemset/problem/159/E)|Codeforces||VK Cup 2012 Qualification Round 2|7|\n|<ul><li>- [ ] Done</li></ul>|446|[Digits Permutations](http://codeforces.com/problemset/problem/138/B)|Codeforces||Codeforces Beta Round #99 (Div. 1) & Codeforces Beta Round #99 (Div. 2)|7|\n|<ul><li>- [ ] Done</li></ul>|447|[Hobbits' Party](http://codeforces.com/problemset/problem/125/C)|Codeforces||Codeforces Testing Round #2|7|\n|<ul><li>- [ ] Done</li></ul>|448|[Russian Roulette](http://codeforces.com/problemset/problem/103/C)|Codeforces||Codeforces Beta Round #80 (Div. 1 Only) & Codeforces Beta Round #80 (Div. 2 Only)|7|\n|<ul><li>- [ ] Done</li></ul>|449|[Lucky Numbers](http://codeforces.com/problemset/problem/95/B)|Codeforces||Codeforces Beta Round #77 (Div. 1 Only)|7|\n|<ul><li>- [ ] Done</li></ul>|450|[End of Exams](http://codeforces.com/problemset/problem/93/B)|Codeforces||Codeforces Beta Round #76 (Div. 1 Only) & Codeforces Beta Round #76 (Div. 2 Only)|7|\n|<ul><li>- [ ] Done</li></ul>|451|[Beavermuncher-0xFF](http://codeforces.com/problemset/problem/77/C)|Codeforces||Codeforces Beta Round #69 (Div. 1 Only) & Codeforces Beta Round #69 (Div. 2 Only)|7|\n|<ul><li>- [ ] Done</li></ul>|452|[Plus and xor](http://codeforces.com/problemset/problem/76/D)|Codeforces||All-Ukrainian School Olympiad in Informatics|7|\n|<ul><li>- [ ] Done</li></ul>|453|[Restoration of the Permutation](http://codeforces.com/problemset/problem/67/B)|Codeforces||Manthan 2011|7|\n|<ul><li>- [ ] Done</li></ul>|454|[Three Base Stations](http://codeforces.com/problemset/problem/51/C)|Codeforces||Codeforces Beta Round #48|7|\n|<ul><li>- [ ] Done</li></ul>|455|[TCMCF+++](http://codeforces.com/problemset/problem/45/I)|Codeforces||School Team Contest #3 (Winter Computer School 2010/11)|7|\n|<ul><li>- [ ] Done</li></ul>|456|[Event Dates](http://codeforces.com/problemset/problem/45/D)|Codeforces||School Team Contest #3 (Winter Computer School 2010/11)|7|\n|<ul><li>- [ ] Done</li></ul>|457|[Old Berland Language](http://codeforces.com/problemset/problem/37/C)|Codeforces||Codeforces Beta Round #37|7|\n|<ul><li>- [ ] Done</li></ul>|458|[Computer Game](http://codeforces.com/problemset/problem/37/B)|Codeforces||Codeforces Beta Round #37|7|\n|<ul><li>- [ ] Done</li></ul>|459|[Seller Bob](http://codeforces.com/problemset/problem/18/D)|Codeforces||Codeforces Beta Round #18 (Div. 2 Only)|7|\n|<ul><li>- [ ] Done</li></ul>|460|[Intellectual Inquiry](http://codeforces.com/problemset/problem/645/E)|Codeforces||CROC 2016 - Elimination Round|7|\n|<ul><li>- [ ] Done</li></ul>|461|[Bear and Contribution](http://codeforces.com/problemset/problem/639/D)|Codeforces||VK Cup 2016 - Round 1|7|\n|<ul><li>- [ ] Done</li></ul>|462|[Road Improvement](http://codeforces.com/problemset/problem/638/C)|Codeforces||VK Cup 2016 - Qualification Round 2|7|\n|<ul><li>- [ ] Done</li></ul>|463|[Package Delivery](http://codeforces.com/problemset/problem/627/C)|Codeforces||8VC Venture Cup 2016 - Final Round|7|\n|<ul><li>- [ ] Done</li></ul>|464|[New Year and Three Musketeers](http://codeforces.com/problemset/problem/611/E)|Codeforces||Good Bye 2015|7|\n|<ul><li>- [ ] Done</li></ul>|465|[Bulbo](http://codeforces.com/problemset/problem/575/F)|Codeforces||Bubble Cup 8 - Finals [Online Mirror]|7|\n|<ul><li>- [ ] Done</li></ul>|466|[Nudist Beach](http://codeforces.com/problemset/problem/553/D)|Codeforces||Codeforces Round #309 (Div. 1)|7|\n|<ul><li>- [ ] Done</li></ul>|467|[Quest](http://codeforces.com/problemset/problem/542/F)|Codeforces||VK Cup 2015 - Round 3 (unofficial online mirror, Div. 1 only)|7|\n|<ul><li>- [ ] Done</li></ul>|468|[Group Photo 2 (online mirror version)](http://codeforces.com/problemset/problem/529/B)|Codeforces||VK Cup 2015 - Round 1 (unofficial online mirror, Div. 1 only)|7|\n|<ul><li>- [ ] Done</li></ul>|469|[Social Network](http://codeforces.com/problemset/problem/524/D)|Codeforces||VK Cup 2015 - Round 1|7|\n|<ul><li>- [ ] Done</li></ul>|470|[Chicken or Fish?](http://codeforces.com/problemset/problem/522/C)|Codeforces||VK Cup 2015 - Qualification Round 1|7|\n|<ul><li>- [ ] Done</li></ul>|471|[Arthur and Questions](http://codeforces.com/problemset/problem/518/E)|Codeforces||Codeforces Round #293 (Div. 2)|7|\n|<ul><li>- [ ] Done</li></ul>|472|[Kamal-ol-molk's Painting](http://codeforces.com/problemset/problem/475/C)|Codeforces||Bayan 2015 Contest Warm Up|7|\n|<ul><li>- [ ] Done</li></ul>|473|[Distributed Join](http://codeforces.com/problemset/problem/457/B)|Codeforces||MemSQL Start[c]UP 2.0 - Round 2|7|\n|<ul><li>- [ ] Done</li></ul>|474|[Special Grid](http://codeforces.com/problemset/problem/435/D)|Codeforces||Codeforces Round #249 (Div. 2)|7|\n|<ul><li>- [ ] Done</li></ul>|475|[Guess the Tree](http://codeforces.com/problemset/problem/429/C)|Codeforces||Codeforces Round #245 (Div. 1) & Codeforces Round #245 (Div. 2)|7|\n|<ul><li>- [ ] Done</li></ul>|476|[Population Size](http://codeforces.com/problemset/problem/416/D)|Codeforces||Codeforces Round #241 (Div. 2)|7|\n|<ul><li>- [ ] Done</li></ul>|477|[Free Market](http://codeforces.com/problemset/problem/364/B)|Codeforces||Codeforces Round #213 (Div. 1) & Codeforces Round #213 (Div. 2)|7|\n|<ul><li>- [ ] Done</li></ul>|478|[Fools and Foolproof Roads](http://codeforces.com/problemset/problem/362/D)|Codeforces||Codeforces Round #212 (Div. 2)|7|\n|<ul><li>- [ ] Done</li></ul>|479|[Jeff and Permutation](http://codeforces.com/problemset/problem/351/E)|Codeforces||Codeforces Round #204 (Div. 1)|7|\n|<ul><li>- [ ] Done</li></ul>|480|[Students' Revenge](http://codeforces.com/problemset/problem/332/C)|Codeforces||Codeforces Round #193 (Div. 2)|7|\n|<ul><li>- [ ] Done</li></ul>|481|[Sheldon and Ice Pieces](http://codeforces.com/problemset/problem/328/B)|Codeforces||Testing Round #8|7|\n|<ul><li>- [ ] Done</li></ul>|482|[Lovely Matrix](http://codeforces.com/problemset/problem/274/D)|Codeforces||Codeforces Round #168 (Div. 1)|7|\n|<ul><li>- [ ] Done</li></ul>|483|[Black and White Tree](http://codeforces.com/problemset/problem/260/D)|Codeforces||Codeforces Round #158 (Div. 2)|7|\n|<ul><li>- [ ] Done</li></ul>|484|[Number Transformation](http://codeforces.com/problemset/problem/251/C)|Codeforces||Codeforces Round #153 (Div. 1) & Codeforces Round #153 (Div. 2)|7|\n|<ul><li>- [ ] Done</li></ul>|485|[Educational Game](http://codeforces.com/problemset/problem/178/A3)|Codeforces||ABBYY Cup 2.0 - Hard|7|\n|<ul><li>- [ ] Done</li></ul>|486|[Educational Game](http://codeforces.com/problemset/problem/178/A2)|Codeforces||ABBYY Cup 2.0 - Hard|7|\n|<ul><li>- [ ] Done</li></ul>|487|[Range Increments](http://codeforces.com/problemset/problem/174/C)|Codeforces||VK Cup 2012 Round 3 (Unofficial Div. 2 Edition)|7|\n|<ul><li>- [ ] Done</li></ul>|488|[Big Maximum Sum](http://codeforces.com/problemset/problem/75/D)|Codeforces||Codeforces Beta Round #67 (Div. 2)|7|\n|<ul><li>- [ ] Done</li></ul>|489|[Dima and Horses](http://codeforces.com/problemset/problem/272/E)|Codeforces||Codeforces Round #167 (Div. 2) & Codeforces Round #167 (Div. 1)|7|\n|<ul><li>- [ ] Done</li></ul>|490|[Hamiltonian Cycle](https://icpcarchive.ecs.baylor.edu/index.php?option=onlinejudge&page=show_problem&problem=3551)|Live Archive|1997|Latin America - South America|7|\n|<ul><li>- [ ] Done</li></ul>|491|[Ant Man](http://codeforces.com/problemset/problem/704/B)|Codeforces||Codeforces Round #366 (Div. 1) & Codeforces Round #366 (Div. 2)|7|\n|<ul><li>- [ ] Done</li></ul>|492|[Change-free](http://codeforces.com/problemset/problem/767/E)|Codeforces||Codeforces Round #398 (Div. 2)|7|\n|<ul><li>- [ ] Done</li></ul>|493|[Sweets for Everyone!](http://codeforces.com/problemset/problem/248/D)|Codeforces||Codeforces Round #152 (Div. 2) & Codeforces Round #152 (Div. 1)|8|\n|<ul><li>- [ ] Done</li></ul>|494|[T-decomposition](http://codeforces.com/problemset/problem/237/D)|Codeforces||Codeforces Round #147 (Div. 2)|8|\n|<ul><li>- [ ] Done</li></ul>|495|[Merging Two Decks](http://codeforces.com/problemset/problem/234/H)|Codeforces||Codeforces Round #145 (Div. 2, ACM-ICPC Rules) & Codeforces Round #145 (Div. 1, ACM-ICPC Rules)|8|\n|<ul><li>- [ ] Done</li></ul>|496|[Trails and Glades](http://codeforces.com/problemset/problem/209/C)|Codeforces||VK Cup 2012 Finals, Practice Session|8|\n|<ul><li>- [ ] Done</li></ul>|497|[Hamming Distance](http://codeforces.com/problemset/problem/193/C)|Codeforces||Codeforces Round #122 (Div. 1) & Codeforces Round #122 (Div. 2)|8|\n|<ul><li>- [ ] Done</li></ul>|498|[Optimal Sum](http://codeforces.com/problemset/problem/182/C)|Codeforces||Codeforces Round #117 (Div. 2)|8|\n|<ul><li>- [ ] Done</li></ul>|499|[Name](http://codeforces.com/problemset/problem/180/D)|Codeforces||Codeforces Round #116 (Div. 2, ACM-ICPC Rules)|8|\n|<ul><li>- [ ] Done</li></ul>|500|[Competition](http://codeforces.com/problemset/problem/144/E)|Codeforces||Codeforces Round #103 (Div. 2)|8|\n|<ul><li>- [ ] Done</li></ul>|501|[Swaps](http://codeforces.com/problemset/problem/134/C)|Codeforces||Codeforces Testing Round #3|8|\n|<ul><li>- [ ] Done</li></ul>|502|[Constants in the language of Shakespeare](http://codeforces.com/problemset/problem/132/D)|Codeforces||Codeforces Beta Round #96 (Div. 1)|8|\n|<ul><li>- [ ] Done</li></ul>|503|[E-reader Display](http://codeforces.com/problemset/problem/126/C)|Codeforces||Codeforces Beta Round #93 (Div. 1 Only) & Codeforces Beta Round #93 (Div. 2 Only)|8|\n|<ul><li>- [ ] Done</li></ul>|504|[Brackets](http://codeforces.com/problemset/problem/123/C)|Codeforces||Codeforces Beta Round #92 (Div. 1 Only) & Codeforces Beta Round #92 (Div. 2 Only)|8|\n|<ul><li>- [ ] Done</li></ul>|505|[Castle](http://codeforces.com/problemset/problem/101/D)|Codeforces||Codeforces Beta Round #79 (Div. 1 Only)|8|\n|<ul><li>- [ ] Done</li></ul>|506|[Polycarp's Picture Gallery](http://codeforces.com/problemset/problem/81/D)|Codeforces||Yandex.Algorithm Open 2011 Qualification 1|8|\n|<ul><li>- [ ] Done</li></ul>|507|[FreeDiv](http://codeforces.com/problemset/problem/73/D)|Codeforces||Codeforces Beta Round #66|8|\n|<ul><li>- [ ] Done</li></ul>|508|[Need For Brake](http://codeforces.com/problemset/problem/73/B)|Codeforces||Codeforces Beta Round #66|8|\n|<ul><li>- [ ] Done</li></ul>|509|[Team Arrangement](http://codeforces.com/problemset/problem/59/D)|Codeforces||Codeforces Beta Round #55 (Div. 2)|8|\n|<ul><li>- [ ] Done</li></ul>|510|[Calendar](http://codeforces.com/problemset/problem/58/D)|Codeforces||Codeforces Beta Round #54 (Div. 2)|8|\n|<ul><li>- [ ] Done</li></ul>|511|[Director](http://codeforces.com/problemset/problem/45/E)|Codeforces||School Team Contest #3 (Winter Computer School 2010/11)|8|\n|<ul><li>- [ ] Done</li></ul>|512|[Triminoes](http://codeforces.com/problemset/problem/44/J)|Codeforces||School Team Contest #2 (Winter Computer School 2010/11)|8|\n|<ul><li>- [ ] Done</li></ul>|513|[C*++ Calculations](http://codeforces.com/problemset/problem/39/A)|Codeforces||School Team Contest #1 (Winter Computer School 2010/11)|8|\n|<ul><li>- [ ] Done</li></ul>|514|[Tricky and Clever Password](http://codeforces.com/problemset/problem/30/E)|Codeforces||Codeforces Beta Round #30 (Codeforces format)|8|\n|<ul><li>- [ ] Done</li></ul>|515|[Deletion of Repeats](http://codeforces.com/problemset/problem/19/C)|Codeforces||Codeforces Beta Round #19|8|\n|<ul><li>- [ ] Done</li></ul>|516|[LCS Again](http://codeforces.com/problemset/problem/578/D)|Codeforces||Codeforces Round #320 (Div. 1) [Bayan Thanks-Round] & Codeforces Round #320 (Div. 2) [Bayan Thanks-Round]|8|\n|<ul><li>- [ ] Done</li></ul>|517|[CNF 2](http://codeforces.com/problemset/problem/571/C)|Codeforces||Codeforces Round #317 [AimFund Thanks-Round] (Div. 1) & Codeforces Round #317 [AimFund Thanks-Round] (Div. 2)|8|\n|<ul><li>- [ ] Done</li></ul>|518|[New Language](http://codeforces.com/problemset/problem/568/C)|Codeforces||Codeforces Round #315 (Div. 1) & Codeforces Round #315 (Div. 2)|8|\n|<ul><li>- [ ] Done</li></ul>|519|[Shop](http://codeforces.com/problemset/problem/521/D)|Codeforces||Codeforces Round #295 (Div. 1)|8|\n|<ul><li>- [ ] Done</li></ul>|520|[Alex and Complicated Task](http://codeforces.com/problemset/problem/467/E)|Codeforces||Codeforces Round #267 (Div. 2)|8|\n|<ul><li>- [ ] Done</li></ul>|521|[Cardboard Box](http://codeforces.com/problemset/problem/436/E)|Codeforces||Zepto Code Rush 2014|8|\n|<ul><li>- [ ] Done</li></ul>|522|[Square Tiling](http://codeforces.com/problemset/problem/432/E)|Codeforces||Codeforces Round #246 (Div. 2)|8|\n|<ul><li>- [ ] Done</li></ul>|523|[Mashmokh and Water Tanks](http://codeforces.com/problemset/problem/414/D)|Codeforces||Codeforces Round #240 (Div. 1)|8|\n|<ul><li>- [ ] Done</li></ul>|524|[Maze 1D](http://codeforces.com/problemset/problem/404/E)|Codeforces||Codeforces Round #237 (Div. 2)|8|\n|<ul><li>- [ ] Done</li></ul>|525|[Dominoes](http://codeforces.com/problemset/problem/394/C)|Codeforces||Codeforces Round #231 (Div. 2)|8|\n|<ul><li>- [ ] Done</li></ul>|526|[Bags and Coins](http://codeforces.com/problemset/problem/356/D)|Codeforces||Codeforces Round #207 (Div. 1)|8|\n|<ul><li>- [ ] Done</li></ul>|527|[Antichain](http://codeforces.com/problemset/problem/353/E)|Codeforces||Codeforces Round #205 (Div. 2)|8|\n|<ul><li>- [ ] Done</li></ul>|528|[Three Swaps](http://codeforces.com/problemset/problem/339/E)|Codeforces||Codeforces Round #197 (Div. 2)|8|\n|<ul><li>- [ ] Done</li></ul>|529|[Ilya and Two Numbers](http://codeforces.com/problemset/problem/313/E)|Codeforces||Codeforces Round #186 (Div. 2)|8|\n|<ul><li>- [ ] Done</li></ul>|530|[Memory for Arrays](http://codeforces.com/problemset/problem/309/C)|Codeforces||Croc Champ 2013 - Finals (online version, Div. 1)|8|\n|<ul><li>- [ ] Done</li></ul>|531|[Roads in Yusland](http://codeforces.com/problemset/problem/671/D)|Codeforces||Codeforces Round #352 (Div. 1)|8|\n|<ul><li>- [ ] Done</li></ul>|532|[Factorial](http://codeforces.com/problemset/problem/64/A)|Codeforces||Unknown Language Round #1|8|\n|<ul><li>- [ ] Done</li></ul>|533|[Road Repairs](http://codeforces.com/problemset/problem/240/E)|Codeforces||Codeforces Round #145 (Div. 1, ACM-ICPC Rules)|9|\n|<ul><li>- [ ] Done</li></ul>|534|[Beaver's Calculator 1.0](http://codeforces.com/problemset/problem/207/A3)|Codeforces||Abbyy Cup 2.0 - Final (unofficial)|9|\n|<ul><li>- [ ] Done</li></ul>|535|[Beaver's Calculator 1.0](http://codeforces.com/problemset/problem/207/A2)|Codeforces||Abbyy Cup 2.0 - Final (unofficial)|9|\n|<ul><li>- [ ] Done</li></ul>|536|[Beaver's Calculator 1.0](http://codeforces.com/problemset/problem/207/A1)|Codeforces||Abbyy Cup 2.0 - Final (unofficial)|9|\n|<ul><li>- [ ] Done</li></ul>|537|[Transportation](http://codeforces.com/problemset/problem/203/E)|Codeforces||Codeforces Round #128 (Div. 2)|9|\n|<ul><li>- [ ] Done</li></ul>|538|[The Next Good String](http://codeforces.com/problemset/problem/196/D)|Codeforces||Codeforces Round #124 (Div. 1)|9|\n|<ul><li>- [ ] Done</li></ul>|539|[Metro Scheme](http://codeforces.com/problemset/problem/191/D)|Codeforces||Codeforces Round #121 (Div. 1)|9|\n|<ul><li>- [ ] Done</li></ul>|540|[T-shirt](http://codeforces.com/problemset/problem/183/D)|Codeforces||Croc Champ 2012 - Final|9|\n|<ul><li>- [ ] Done</li></ul>|541|[Power Defence](http://codeforces.com/problemset/problem/175/E)|Codeforces||Codeforces Round #115|9|\n|<ul><li>- [ ] Done</li></ul>|542|[Deputies](http://codeforces.com/problemset/problem/173/D)|Codeforces||Croc Champ 2012 - Round 1|9|\n|<ul><li>- [ ] Done</li></ul>|543|[Shoe Store](http://codeforces.com/problemset/problem/166/D)|Codeforces||Codeforces Round #113 (Div. 2)|9|\n|<ul><li>- [ ] Done</li></ul>|544|[Two progressions](http://codeforces.com/problemset/problem/125/D)|Codeforces||Codeforces Testing Round #2|9|\n|<ul><li>- [ ] Done</li></ul>|545|[Luck is in Numbers](http://codeforces.com/problemset/problem/120/I)|Codeforces||School Regional Team Contest, Saratov, 2011|9|\n|<ul><li>- [ ] Done</li></ul>|546|[Grocer's Problem](http://codeforces.com/problemset/problem/91/D)|Codeforces||Codeforces Beta Round #75 (Div. 1 Only)|9|\n|<ul><li>- [ ] Done</li></ul>|547|[Tetris revisited](http://codeforces.com/problemset/problem/86/B)|Codeforces||Yandex.Algorithm 2011 Round 2|9|\n|<ul><li>- [ ] Done</li></ul>|548|[Track](http://codeforces.com/problemset/problem/83/C)|Codeforces||Codeforces Beta Round #72 (Div. 1 Only) & Codeforces Beta Round #72 (Div. 2 Only)|9|\n|<ul><li>- [ ] Done</li></ul>|549|[Mice](http://codeforces.com/problemset/problem/76/B)|Codeforces||All-Ukrainian School Olympiad in Informatics|9|\n|<ul><li>- [ ] Done</li></ul>|550|[Presents](http://codeforces.com/problemset/problem/64/D)|Codeforces||Unknown Language Round #1|9|\n|<ul><li>- [ ] Done</li></ul>|551|[Table](http://codeforces.com/problemset/problem/64/C)|Codeforces||Unknown Language Round #1|9|\n|<ul><li>- [ ] Done</li></ul>|552|[Trial for Chief](http://codeforces.com/problemset/problem/37/E)|Codeforces||Codeforces Beta Round #37|9|\n|<ul><li>- [ ] Done</li></ul>|553|[King's Problem?](http://codeforces.com/problemset/problem/30/D)|Codeforces||Codeforces Beta Round #30 (Codeforces format)|9|\n|<ul><li>- [ ] Done</li></ul>|554|[Bear and Paradox](http://codeforces.com/problemset/problem/639/E)|Codeforces||VK Cup 2016 - Round 1|9|\n|<ul><li>- [ ] Done</li></ul>|555|[Raffles](http://codeforces.com/problemset/problem/626/G)|Codeforces||8VC Venture Cup 2016 - Elimination Round|9|\n|<ul><li>- [ ] Done</li></ul>|556|[Birthday](http://codeforces.com/problemset/problem/623/D)|Codeforces||AIM Tech Round (Div. 1)|9|\n|<ul><li>- [ ] Done</li></ul>|557|[Walking!](http://codeforces.com/problemset/problem/578/E)|Codeforces||Codeforces Round #320 (Div. 1) [Bayan Thanks-Round]|9|\n|<ul><li>- [ ] Done</li></ul>|558|[Replicating Processes](http://codeforces.com/problemset/problem/566/B)|Codeforces||VK Cup 2015 - Finals, online mirror|9|\n|<ul><li>- [ ] Done</li></ul>|559|[Berland Local Positioning System](http://codeforces.com/problemset/problem/534/E)|Codeforces||Codeforces Round #298 (Div. 2)|9|\n|<ul><li>- [ ] Done</li></ul>|560|[Mr. Kitayuta vs. Bamboos](http://codeforces.com/problemset/problem/505/E)|Codeforces||Codeforces Round #286 (Div. 2) & Codeforces Round #286 (Div. 1)|9|\n|<ul><li>- [ ] Done</li></ul>|561|[New York Hotel](http://codeforces.com/problemset/problem/491/B)|Codeforces||Testing Round #11|9|\n|<ul><li>- [ ] Done</li></ul>|562|[Levko and Game](http://codeforces.com/problemset/problem/360/E)|Codeforces||Codeforces Round #210 (Div. 1)|9|\n|<ul><li>- [ ] Done</li></ul>|563|[Pumping Stations](http://codeforces.com/problemset/problem/343/E)|Codeforces||Codeforces Round #200 (Div. 1)|9|\n|<ul><li>- [ ] Done</li></ul>|564|[Candies Game](http://codeforces.com/problemset/problem/341/E)|Codeforces||Codeforces Round #198 (Div. 1)|9|\n|<ul><li>- [ ] Done</li></ul>|565|[Binary Key](http://codeforces.com/problemset/problem/332/E)|Codeforces||Codeforces Round #193 (Div. 2)|9|\n|<ul><li>- [ ] Done</li></ul>|566|[The Red Button](http://codeforces.com/problemset/problem/325/E)|Codeforces||MemSQL start[c]up Round 1|9|\n|<ul><li>- [ ] Done</li></ul>|567|[Ciel and Flipboard](http://codeforces.com/problemset/problem/321/D)|Codeforces||Codeforces Round #190 (Div. 1)|9|\n|<ul><li>- [ ] Done</li></ul>|568|[Have You Ever Heard About the Word?](http://codeforces.com/problemset/problem/319/D)|Codeforces||Codeforces Round #189 (Div. 1)|9|\n|<ul><li>- [ ] Done</li></ul>|569|[Optimizer](http://codeforces.com/problemset/problem/306/B)|Codeforces||Testing Round #6|9|\n|<ul><li>- [ ] Done</li></ul>|570|[Ever-Hungry Krakozyabra](http://codeforces.com/problemset/problem/833/C)|Codeforces||Codeforces Round #426 (Div. 1) & Codeforces Round #426 (Div. 2)|9|\n|<ul><li>- [ ] Done</li></ul>|571|[Huffman Coding on Segment](http://codeforces.com/problemset/problem/700/D)|Codeforces||Codeforces Round #364 (Div. 1)|9|\n|<ul><li>- [ ] Done</li></ul>|572|[Heaven Tour](http://codeforces.com/problemset/problem/187/E)|Codeforces||Codeforces Round #119 (Div. 1)|10|\n|<ul><li>- [ ] Done</li></ul>|573|[Candy Shop](http://codeforces.com/problemset/problem/183/E)|Codeforces||Croc Champ 2012 - Final|10|\n|<ul><li>- [ ] Done</li></ul>|574|[Interval Coloring](http://codeforces.com/problemset/problem/100/J)|Codeforces||Unknown Language Round #3|10|\n|<ul><li>- [ ] Done</li></ul>|575|[Fire and Ice](http://codeforces.com/problemset/problem/89/E)|Codeforces||Codeforces Beta Round #74 (Div. 1 Only)|10|\n|<ul><li>- [ ] Done</li></ul>|576|[Oil](http://codeforces.com/problemset/problem/72/F)|Codeforces||Unknown Language Round #2|10|\n|<ul><li>- [ ] Done</li></ul>|577|[Goshtasp, Vishtasp and Eidi](http://codeforces.com/problemset/problem/72/A)|Codeforces||Unknown Language Round #2|10|\n|<ul><li>- [ ] Done</li></ul>|578|[Snow sellers](http://codeforces.com/problemset/problem/48/F)|Codeforces||School Personal Contest #3 (Winter Computer School 2010/11) - Codeforces Beta Round #45 (ACM-ICPC Rules)|10|\n|<ul><li>- [ ] Done</li></ul>|579|[Forward, march!](http://codeforces.com/problemset/problem/11/E)|Codeforces||Codeforces Beta Round #11|10|\n|<ul><li>- [ ] Done</li></ul>|580|[Dynamic Programming](p?ID=410)|A2 Online Judge|||10|\n|<ul><li>- [ ] Done</li></ul>|581|[To Hack or not to Hack](http://codeforces.com/problemset/problem/662/E)|Codeforces||CROC 2016 - Final Round [Private, For Onsite Finalists Only]|10|\n|<ul><li>- [ ] Done</li></ul>|582|[Frog Fights](http://codeforces.com/problemset/problem/625/E)|Codeforces||Codeforces Round #342 (Div. 2)|10|\n|<ul><li>- [ ] Done</li></ul>|583|[Agricultural Archaeology](http://codeforces.com/problemset/problem/589/L)|Codeforces||2015-2016 ACM-ICPC, NEERC, Southern Subregional Contest (Online Mirror, ACM-ICPC Rules, Teams Preferred)|10|\n|<ul><li>- [ ] Done</li></ul>|584|[Kojiro and Furrari](http://codeforces.com/problemset/problem/581/E)|Codeforces||Codeforces Round #322 (Div. 2)|10|\n|<ul><li>- [ ] Done</li></ul>|585|[Bear and Bowling](http://codeforces.com/problemset/problem/573/E)|Codeforces||Codeforces Round #318 [RussianCodeCup Thanks-Round] (Div. 1)|10|\n|<ul><li>- [ ] Done</li></ul>|586|[Summer Dichotomy](http://codeforces.com/problemset/problem/538/H)|Codeforces||Codeforces Round #300|10|\n|<ul><li>- [ ] Done</li></ul>|587|[Berland Miners](http://codeforces.com/problemset/problem/533/A)|Codeforces||VK Cup 2015 - Round 2 (unofficial online mirror, Div. 1 only)|10|\n|<ul><li>- [ ] Done</li></ul>|588|[Spiders Evil Plan](http://codeforces.com/problemset/problem/526/G)|Codeforces||ZeptoLab Code Rush 2015|10|\n|<ul><li>- [ ] Done</li></ul>|589|[An easy problem about trees](http://codeforces.com/problemset/problem/457/F)|Codeforces||MemSQL Start[c]UP 2.0 - Round 2|10|\n|<ul><li>- [ ] Done</li></ul>|590|[Stock Trading](http://codeforces.com/problemset/problem/391/F2)|Codeforces||Rockethon 2014|10|\n|<ul><li>- [ ] Done</li></ul>|591|[The Tournament](http://codeforces.com/problemset/problem/391/C2)|Codeforces||Rockethon 2014|10|\n|<ul><li>- [ ] Done</li></ul>|592|[Summer Reading](http://codeforces.com/problemset/problem/370/E)|Codeforces||Codeforces Round #217 (Div. 2)|10|\n|<ul><li>- [ ] Done</li></ul>|593|[Buy One, Get One Free](http://codeforces.com/problemset/problem/335/F)|Codeforces||MemSQL start[c]up Round 2 - online version|10|\n|<ul><li>- [ ] Done</li></ul>|594|[Sheep](http://codeforces.com/problemset/problem/309/E)|Codeforces||Croc Champ 2013 - Finals (online version, Div. 1)|10|\n|<ul><li>- [ ] Done</li></ul>|595|[Greedy Petya](http://codeforces.com/problemset/problem/290/F)|Codeforces||April Fools Day Contest 2013|10|\n|<ul><li>- [ ] Done</li></ul>|596|[Goats and Wolves](http://codeforces.com/problemset/problem/45/F)|Codeforces||School Team Contest #3 (Winter Computer School 2010/11)|10|\n|<ul><li>- [ ] Done</li></ul>|597|[Organizing a Race](http://codeforces.com/problemset/problem/671/E)|Codeforces||Codeforces Round #352 (Div. 1)|10|\n|<ul><li>- [ ] Done</li></ul>|598|[Chess Championship](http://codeforces.com/problemset/problem/736/E)|Codeforces||Codeforces Round #382 (Div. 1)|10|\n|<ul><li>- [ ] Done</li></ul>|599|[Restore the Tree](http://codeforces.com/problemset/problem/871/E)|Codeforces||Codeforces Round #440 (Div. 1, based on Technocup 2018 Elimination Round 2)|10|\n"
  },
  {
    "path": "categories/005. DFS_BFS_Dijkstra/README.md",
    "content": "# 005. DFS_BFS_Dijkstra\n\n\n| Checkbox | ID | Problem Name|Online Judge|Year|Contest|Difficulty Level|\n|:---:|:---:|:---:|:---:|:---:|:---:|:---:|\n|<ul><li>- [ ] Done</li></ul>|1|[The Benefactor](http://www.spoj.com/problems/BENEFACT/)|SPOJ|||1|\n|<ul><li>- [ ] Done</li></ul>|2|[Bitmap](http://www.spoj.com/problems/BITMAP/)|SPOJ|||1|\n|<ul><li>- [ ] Done</li></ul>|3|[Lucius Dungeon](http://www.spoj.com/problems/BYTESE1/)|SPOJ|||1|\n|<ul><li>- [ ] Done</li></ul>|4|[The Cats and the Mouse](http://www.spoj.com/problems/CATM/)|SPOJ|||1|\n|<ul><li>- [ ] Done</li></ul>|5|[Key Task](http://www.spoj.com/problems/CERC07K/)|SPOJ|||1|\n|<ul><li>- [ ] Done</li></ul>|6|[106 miles to Chicago](http://www.spoj.com/problems/CHICAGO/)|SPOJ|||1|\n|<ul><li>- [ ] Done</li></ul>|7|[Cleaning Robot](http://www.spoj.com/problems/CLEANRBT/)|SPOJ|||1|\n|<ul><li>- [ ] Done</li></ul>|8|[Highways](http://www.spoj.com/problems/HIGHWAYS/)|SPOJ|||1|\n|<ul><li>- [ ] Done</li></ul>|9|[Invitation Cards](http://www.spoj.com/problems/INCARDS/)|SPOJ|||1|\n|<ul><li>- [ ] Done</li></ul>|10|[Labyrinth](http://www.spoj.com/problems/LABYR1/)|SPOJ|||1|\n|<ul><li>- [ ] Done</li></ul>|11|[Mice and Maze](http://www.spoj.com/problems/MICEMAZE/)|SPOJ|||1|\n|<ul><li>- [ ] Done</li></ul>|12|[Laser Phones](http://www.spoj.com/problems/MLASERP/)|SPOJ|||1|\n|<ul><li>- [ ] Done</li></ul>|13|[Ones and zeros](http://www.spoj.com/problems/ONEZERO/)|SPOJ|||1|\n|<ul><li>- [ ] Done</li></ul>|14|[Pouring water](http://www.spoj.com/problems/POUR1/)|SPOJ|||1|\n|<ul><li>- [ ] Done</li></ul>|15|[Prime Path](http://www.spoj.com/problems/PPATH/)|SPOJ|||1|\n|<ul><li>- [ ] Done</li></ul>|16|[Vertex Cover](http://www.spoj.com/problems/PT07X/)|SPOJ|||1|\n|<ul><li>- [ ] Done</li></ul>|17|[Is it a tree](http://www.spoj.com/problems/PT07Y/)|SPOJ|||1|\n|<ul><li>- [ ] Done</li></ul>|18|[Longest path in a tree](http://www.spoj.com/problems/PT07Z/)|SPOJ|||1|\n|<ul><li>- [ ] Done</li></ul>|19|[Almost Shortest Path](http://www.spoj.com/problems/SAMER08A/)|SPOJ|||1|\n|<ul><li>- [ ] Done</li></ul>|20|[Shopping](http://www.spoj.com/problems/SHOP/)|SPOJ|||1|\n|<ul><li>- [ ] Done</li></ul>|21|[The Shortest Path](http://www.spoj.com/problems/SHPATH/)|SPOJ|||1|\n|<ul><li>- [ ] Done</li></ul>|22|[Tic-Tac-Toe ( I )](http://www.spoj.com/problems/TOE1/)|SPOJ|||1|\n|<ul><li>- [ ] Done</li></ul>|23|[Tic-Tac-Toe ( II )](http://www.spoj.com/problems/TOE2/)|SPOJ|||1|\n|<ul><li>- [ ] Done</li></ul>|24|[A Bug&#8217;s Life](http://www.spoj.com/problems/BUGLIFE/)|SPOJ|||1|\n|<ul><li>- [ ] Done</li></ul>|25|[Traffic Network](http://www.spoj.com/problems/TRAFFICN/)|SPOJ|||1|\n|<ul><li>- [ ] Done</li></ul>|26|[Making Jumps](http://www.spoj.com/problems/MKJUMPS/)|SPOJ|||1|\n|<ul><li>- [ ] Done</li></ul>|27|[Number Maze](https://uva.onlinejudge.org/index.php?option=onlinejudge&page=show_problem&problem=870)|UVA|||1|\n|<ul><li>- [ ] Done</li></ul>|28|[Lift Hopping](https://uva.onlinejudge.org/index.php?option=onlinejudge&page=show_problem&problem=1742)|UVA|||1|\n|<ul><li>- [ ] Done</li></ul>|29|[Sending email](https://uva.onlinejudge.org/index.php?option=onlinejudge&page=show_problem&problem=1927)|UVA|||1|\n|<ul><li>- [ ] Done</li></ul>|30|[Knight Moves](https://uva.onlinejudge.org/index.php?option=onlinejudge&page=show_problem&problem=380)|UVA|||1|\n|<ul><li>- [ ] Done</li></ul>|31|[Two Gangsters](http://acm.timus.ru/problem.aspx?space=1&num=1409)|Timus|||1|\n|<ul><li>- [ ] Done</li></ul>|32|[Ice Skating](http://codeforces.com/problemset/problem/217/A)|Codeforces||Codeforces Round #134 (Div. 1) & Codeforces Round #134 (Div. 2)|1|\n|<ul><li>- [ ] Done</li></ul>|33|[Party](http://codeforces.com/problemset/problem/115/A)|Codeforces||Codeforces Beta Round #87 (Div. 1 Only) & Codeforces Beta Round #87 (Div. 2 Only)|1|\n|<ul><li>- [ ] Done</li></ul>|34|[Dijkstra?](http://codeforces.com/problemset/problem/20/C)|Codeforces||Codeforces Alpha Round #20 (Codeforces format)|1|\n|<ul><li>- [ ] Done</li></ul>|35|[Shortest path of the king](http://codeforces.com/problemset/problem/3/A)|Codeforces||Codeforces Beta Round #3|1|\n|<ul><li>- [ ] Done</li></ul>|36|[Cobbled streets](http://www.spoj.com/problems/CSTREET/)|SPOJ|||1|\n|<ul><li>- [ ] Done</li></ul>|37|[You want what filled?](https://uva.onlinejudge.org/index.php?option=onlinejudge&page=show_problem&problem=1887)|UVA|||1|\n|<ul><li>- [ ] Done</li></ul>|38|[Word Transformation](https://uva.onlinejudge.org/index.php?option=onlinejudge&page=show_problem&problem=370)|UVA|||1|\n|<ul><li>- [ ] Done</li></ul>|39|[Page Hopping](https://uva.onlinejudge.org/index.php?option=onlinejudge&page=show_problem&problem=762)|UVA|||1|\n|<ul><li>- [ ] Done</li></ul>|40|[MPI Maelstrom](https://uva.onlinejudge.org/index.php?option=onlinejudge&page=show_problem&problem=364)|UVA|||1|\n|<ul><li>- [ ] Done</li></ul>|41|[Continents](https://uva.onlinejudge.org/index.php?option=onlinejudge&page=show_problem&problem=2035)|UVA|||1|\n|<ul><li>- [ ] Done</li></ul>|42|[prayatna PR](http://www.spoj.com/problems/CAM5/)|SPOJ|||1|\n|<ul><li>- [ ] Done</li></ul>|43|[ABC Path](http://www.spoj.com/problems/ABCPATH/)|SPOJ|||1|\n|<ul><li>- [ ] Done</li></ul>|44|[Marble Game](https://icpcarchive.ecs.baylor.edu/index.php?option=onlinejudge&page=show_problem&problem=1808)|Live Archive|2007|World Finals - Tokyo|1|\n|<ul><li>- [ ] Done</li></ul>|45|[A Node Too Far](https://uva.onlinejudge.org/index.php?option=onlinejudge&page=show_problem&problem=272)|UVA|||1|\n|<ul><li>- [ ] Done</li></ul>|46|[Dungeon Master](https://uva.onlinejudge.org/index.php?option=onlinejudge&page=show_problem&problem=473)|UVA|||1|\n|<ul><li>- [ ] Done</li></ul>|47|[Risk](https://uva.onlinejudge.org/index.php?option=onlinejudge&page=show_problem&problem=508)|UVA|||1|\n|<ul><li>- [ ] Done</li></ul>|48|[We Ship Cheap](https://uva.onlinejudge.org/index.php?option=onlinejudge&page=show_problem&problem=703)|UVA|||1|\n|<ul><li>- [ ] Done</li></ul>|49|[Spreading The News](https://uva.onlinejudge.org/index.php?option=onlinejudge&page=show_problem&problem=865)|UVA|||1|\n|<ul><li>- [ ] Done</li></ul>|50|[All Roads Lead Where?](https://uva.onlinejudge.org/index.php?option=onlinejudge&page=show_problem&problem=950)|UVA|||1|\n|<ul><li>- [ ] Done</li></ul>|51|[Playing with Wheels](https://uva.onlinejudge.org/index.php?option=onlinejudge&page=show_problem&problem=1008)|UVA|||1|\n|<ul><li>- [ ] Done</li></ul>|52|[Bombs! NO they are Mines!!](https://uva.onlinejudge.org/index.php?option=onlinejudge&page=show_problem&problem=1594)|UVA|||1|\n|<ul><li>- [ ] Done</li></ul>|53|[Oil Deposits](https://uva.onlinejudge.org/index.php?option=onlinejudge&page=show_problem&problem=513)|UVA|||1|\n|<ul><li>- [ ] Done</li></ul>|54|[Battleships](https://uva.onlinejudge.org/index.php?option=onlinejudge&page=show_problem&problem=3104)|UVA|||1|\n|<ul><li>- [ ] Done</li></ul>|55|[VALIDATE THE MAZE](http://www.spoj.com/problems/MAKEMAZE/)|SPOJ|||1|\n|<ul><li>- [ ] Done</li></ul>|56|[COSTLY CHESS](http://www.spoj.com/problems/CCHESS/)|SPOJ|||1|\n|<ul><li>- [ ] Done</li></ul>|57|[Sheep](http://www.spoj.com/problems/KOZE/)|SPOJ|||1|\n|<ul><li>- [ ] Done</li></ul>|58|[Lazy Jumping Frog](https://icpcarchive.ecs.baylor.edu/index.php?option=onlinejudge&page=show_problem&problem=1653)|Live Archive|2006|Latin America - South America|1|\n|<ul><li>- [ ] Done</li></ul>|59|[Water among Cubes](http://www.spoj.com/problems/WATER/)|SPOJ|||1|\n|<ul><li>- [ ] Done</li></ul>|60|[Slick](http://www.spoj.com/problems/UCV2013H/)|SPOJ|||1|\n|<ul><li>- [ ] Done</li></ul>|61|[Roads](http://www.spoj.com/problems/ROADS/)|SPOJ|||1|\n|<ul><li>- [ ] Done</li></ul>|62|[Minimum Knight moves !!!](http://www.spoj.com/problems/NAKANJ/)|SPOJ|||1|\n|<ul><li>- [ ] Done</li></ul>|63|[Labyrinth](http://acm.tju.edu.cn/toj/showp1056.html)|TJU|||1|\n|<ul><li>- [ ] Done</li></ul>|64|[Easy Dijkstra Problem](http://www.spoj.com/problems/EZDIJKST/)|SPOJ|||1|\n|<ul><li>- [ ] Done</li></ul>|65|[Unique Path](https://icpcarchive.ecs.baylor.edu/index.php?option=onlinejudge&page=show_problem&problem=4055)|Live Archive|2012|Asia - Jakarta|1|\n|<ul><li>- [ ] Done</li></ul>|66|[Fishmonger](http://www.spoj.com/problems/FISHER/)|SPOJ|||1|\n|<ul><li>- [ ] Done</li></ul>|67|[ALL IZZ WELL](http://www.spoj.com/problems/ALLIZWEL/)|SPOJ|||1|\n|<ul><li>- [ ] Done</li></ul>|68|[Network](https://uva.onlinejudge.org/index.php?option=onlinejudge&page=show_problem&problem=251)|UVA|||1|\n|<ul><li>- [ ] Done</li></ul>|69|[Following Orders](https://uva.onlinejudge.org/index.php?option=onlinejudge&page=show_problem&problem=60)|UVA|||1|\n|<ul><li>- [ ] Done</li></ul>|70|[Til the Cows Come Home](http://poj.org/problem?id=2387)|PKU|||1|\n|<ul><li>- [ ] Done</li></ul>|71|[Chef and Digit Jumps](http://www.codechef.com/problems/DIGJUMP)|CodeChef|||1|\n|<ul><li>- [ ] Done</li></ul>|72|[Sticker Collector Robot](https://uva.onlinejudge.org/index.php?option=onlinejudge&page=show_problem&problem=2931)|UVA|||1|\n|<ul><li>- [ ] Done</li></ul>|73|[Pizzas](p?ID=326)|A2 Online Judge|||1|\n|<ul><li>- [ ] Done</li></ul>|74|[Two Buttons](http://codeforces.com/problemset/problem/520/B)|Codeforces||Codeforces Round #295 (Div. 2)|1|\n|<ul><li>- [ ] Done</li></ul>|75|[Wetlands of Florida](https://uva.onlinejudge.org/index.php?option=onlinejudge&page=show_problem&problem=410)|UVA|||1|\n|<ul><li>- [ ] Done</li></ul>|76|[Rank the Languages](https://uva.onlinejudge.org/index.php?option=onlinejudge&page=show_problem&problem=1277)|UVA|||1|\n|<ul><li>- [ ] Done</li></ul>|77|[Learning Languages](http://codeforces.com/problemset/problem/277/A)|Codeforces||Codeforces Round #170 (Div. 1) & Codeforces Round #170 (Div. 2)|1|\n|<ul><li>- [ ] Done</li></ul>|78|[Vertex](https://uva.onlinejudge.org/index.php?option=onlinejudge&page=show_problem&problem=216)|UVA|||1|\n|<ul><li>- [ ] Done</li></ul>|79|[Herding](http://www.spoj.com/problems/HERDING/)|SPOJ|||1|\n|<ul><li>- [ ] Done</li></ul>|80|[Chop Ahoy! Revisited!](http://www.spoj.com/problems/ANARC05H/)|SPOJ|||1|\n|<ul><li>- [ ] Done</li></ul>|81|[Kefa and Park](http://codeforces.com/problemset/problem/580/C)|Codeforces||Codeforces Round #321 (Div. 2)|1|\n|<ul><li>- [ ] Done</li></ul>|82|[Soldier and Cards](http://codeforces.com/problemset/problem/546/C)|Codeforces||Codeforces Round #304 (Div. 2)|1|\n|<ul><li>- [ ] Done</li></ul>|83|[New Year Transportation](http://codeforces.com/problemset/problem/500/A)|Codeforces||Good Bye 2014|1|\n|<ul><li>- [ ] Done</li></ul>|84|[BerSU Ball](http://codeforces.com/problemset/problem/489/B)|Codeforces||Codeforces Round #277.5 (Div. 2)|1|\n|<ul><li>- [ ] Done</li></ul>|85|[DZY Loves Chessboard](http://codeforces.com/problemset/problem/445/A)|Codeforces||Codeforces Round #254 (Div. 2)|1|\n|<ul><li>- [ ] Done</li></ul>|86|[Maze](http://codeforces.com/problemset/problem/377/A)|Codeforces||Codeforces Round #222 (Div. 1) & Codeforces Round #222 (Div. 2)|1|\n|<ul><li>- [ ] Done</li></ul>|87|[Queue at the School](http://codeforces.com/problemset/problem/266/B)|Codeforces||Codeforces Round #163 (Div. 2)|1|\n|<ul><li>- [ ] Done</li></ul>|88|[Brackets](http://www.spoj.com/problems/BRCKTS/)|SPOJ|||1|\n|<ul><li>- [ ] Done</li></ul>|89|[NP-Hard Problem](http://codeforces.com/problemset/problem/687/A)|Codeforces||Codeforces Round #360 (Div. 1) & Codeforces Round #360 (Div. 2)|1|\n|<ul><li>- [ ] Done</li></ul>|90|[Lost in Localization](http://acm.timus.ru/problem.aspx?space=1&num=1785)|Timus|||1|\n|<ul><li>- [ ] Done</li></ul>|91|[Eniya](http://acm.timus.ru/problem.aspx?space=1&num=1293)|Timus|||1|\n|<ul><li>- [ ] Done</li></ul>|92|[Reverse Root](http://acm.timus.ru/problem.aspx?space=1&num=1001)|Timus|||1|\n|<ul><li>- [ ] Done</li></ul>|93|[A+B Problem](http://acm.timus.ru/problem.aspx?space=1&num=1000)|Timus|||1|\n|<ul><li>- [ ] Done</li></ul>|94|[Bicycle Codes](http://acm.timus.ru/problem.aspx?space=1&num=1877)|Timus|||1|\n|<ul><li>- [ ] Done</li></ul>|95|[Nadia Team](p?ID=408)|A2 Online Judge|||1|\n|<ul><li>- [ ] Done</li></ul>|96|[Word Capitalization](http://codeforces.com/problemset/problem/281/A)|Codeforces||Codeforces Round #172 (Div. 2)|1|\n|<ul><li>- [ ] Done</li></ul>|97|[Mutant Flatworld Explorers](https://uva.onlinejudge.org/index.php?option=onlinejudge&page=show_problem&problem=54)|UVA|||1|\n|<ul><li>- [ ] Done</li></ul>|98|[Robot Motion](https://uva.onlinejudge.org/index.php?option=onlinejudge&page=show_problem&problem=1057)|UVA|||1|\n|<ul><li>- [ ] Done</li></ul>|99|[Graph Connectivity](https://uva.onlinejudge.org/index.php?option=onlinejudge&page=show_problem&problem=400)|UVA|||1|\n|<ul><li>- [ ] Done</li></ul>|100|[Marcus](https://uva.onlinejudge.org/index.php?option=onlinejudge&page=show_problem&problem=1393)|UVA|||1|\n|<ul><li>- [ ] Done</li></ul>|101|[The Seasonal War](https://uva.onlinejudge.org/index.php?option=onlinejudge&page=show_problem&problem=288)|UVA|||1|\n|<ul><li>- [ ] Done</li></ul>|102|[Friends](https://uva.onlinejudge.org/index.php?option=onlinejudge&page=show_problem&problem=1549)|UVA|||1|\n|<ul><li>- [ ] Done</li></ul>|103|[Freckles](https://uva.onlinejudge.org/index.php?option=onlinejudge&page=show_problem&problem=975)|UVA|||1|\n|<ul><li>- [ ] Done</li></ul>|104|[Theatre Square](http://codeforces.com/problemset/problem/1/A)|Codeforces||Codeforces Beta Round #1|1|\n|<ul><li>- [ ] Done</li></ul>|105|[Testing the CATCHER](https://uva.onlinejudge.org/index.php?option=onlinejudge&page=show_problem&problem=167)|UVA|||1|\n|<ul><li>- [ ] Done</li></ul>|106|[Intrepid climber](https://icpcarchive.ecs.baylor.edu/index.php?option=onlinejudge&page=show_problem&problem=4841)|Live Archive|2014|Latin America|1|\n|<ul><li>- [ ] Done</li></ul>|107|[Brackets II](http://www.spoj.com/problems/BRCKTS2/)|SPOJ|||2|\n|<ul><li>- [ ] Done</li></ul>|108|[Changing Maze](http://www.spoj.com/problems/CHMAZE/)|SPOJ|||2|\n|<ul><li>- [ ] Done</li></ul>|109|[Manhattan](http://www.spoj.com/problems/DISTANCE/)|SPOJ|||2|\n|<ul><li>- [ ] Done</li></ul>|110|[GONDOR](http://www.spoj.com/problems/GONDOR/)|SPOJ|||2|\n|<ul><li>- [ ] Done</li></ul>|111|[Lucky Numbers](http://www.spoj.com/problems/LUCKYNUM/)|SPOJ|||2|\n|<ul><li>- [ ] Done</li></ul>|112|[MELE3](http://www.spoj.com/problems/MELE3/)|SPOJ|||2|\n|<ul><li>- [ ] Done</li></ul>|113|[Slash Maze](https://uva.onlinejudge.org/index.php?option=onlinejudge&page=show_problem&problem=646)|UVA|||2|\n|<ul><li>- [ ] Done</li></ul>|114|[Equidivisions](http://www.spoj.com/problems/EQDIV/)|SPOJ|||2|\n|<ul><li>- [ ] Done</li></ul>|115|[Treeramids](http://www.spoj.com/problems/PYRA/)|SPOJ|||2|\n|<ul><li>- [ ] Done</li></ul>|116|[Interesting number](http://www.spoj.com/problems/INUMBER/)|SPOJ|||2|\n|<ul><li>- [ ] Done</li></ul>|117|[Fire Station](https://uva.onlinejudge.org/index.php?option=onlinejudge&page=show_problem&problem=1219)|UVA|||2|\n|<ul><li>- [ ] Done</li></ul>|118|[Fill](https://uva.onlinejudge.org/index.php?option=onlinejudge&page=show_problem&problem=1544)|UVA|||2|\n|<ul><li>- [ ] Done</li></ul>|119|[Babel](https://uva.onlinejudge.org/index.php?option=onlinejudge&page=show_problem&problem=2487)|UVA|||2|\n|<ul><li>- [ ] Done</li></ul>|120|[Jugs](https://uva.onlinejudge.org/index.php?option=onlinejudge&page=show_problem&problem=512)|UVA|||2|\n|<ul><li>- [ ] Done</li></ul>|121|[Meeting Prof. Miguel...](https://uva.onlinejudge.org/index.php?option=onlinejudge&page=show_problem&problem=1112)|UVA|||2|\n|<ul><li>- [ ] Done</li></ul>|122|[Claw Decomposition](https://uva.onlinejudge.org/index.php?option=onlinejudge&page=show_problem&problem=2391)|UVA|||2|\n|<ul><li>- [ ] Done</li></ul>|123|[Come and Go](https://uva.onlinejudge.org/index.php?option=onlinejudge&page=show_problem&problem=2938)|UVA|||2|\n|<ul><li>- [ ] Done</li></ul>|124|[Commandos](https://uva.onlinejudge.org/index.php?option=onlinejudge&page=show_problem&problem=2458)|UVA|||2|\n|<ul><li>- [ ] Done</li></ul>|125|[Dominator](https://uva.onlinejudge.org/index.php?option=onlinejudge&page=show_problem&problem=3053)|UVA|||2|\n|<ul><li>- [ ] Done</li></ul>|126|[Finding Nemo](https://icpcarchive.ecs.baylor.edu/index.php?option=onlinejudge&page=show_problem&problem=1134)|Live Archive|2004|Asia - Beijing|2|\n|<ul><li>- [ ] Done</li></ul>|127|[Grid Colouring](https://uva.onlinejudge.org/index.php?option=onlinejudge&page=show_problem&problem=726)|UVA|||2|\n|<ul><li>- [ ] Done</li></ul>|128|[Robot](https://uva.onlinejudge.org/index.php?option=onlinejudge&page=show_problem&problem=250)|UVA|||2|\n|<ul><li>- [ ] Done</li></ul>|129|[Shipping Routes](https://uva.onlinejudge.org/index.php?option=onlinejudge&page=show_problem&problem=319)|UVA|||2|\n|<ul><li>- [ ] Done</li></ul>|130|[The Party, Part I](https://uva.onlinejudge.org/index.php?option=onlinejudge&page=show_problem&problem=1900)|UVA|||2|\n|<ul><li>- [ ] Done</li></ul>|131|[Runner Pawns](https://icpcarchive.ecs.baylor.edu/index.php?option=onlinejudge&page=show_problem&problem=884)|Live Archive|2003|Latin America - South America|2|\n|<ul><li>- [ ] Done</li></ul>|132|[Meeting For Party](http://www.spoj.com/problems/DCEPC706/)|SPOJ|||2|\n|<ul><li>- [ ] Done</li></ul>|133|[The longest athletic track](http://acm.tju.edu.cn/toj/showp3517.html)|TJU|||2|\n|<ul><li>- [ ] Done</li></ul>|134|[Dungeon Master](http://acm.tju.edu.cn/toj/showp1140.html)|TJU|||2|\n|<ul><li>- [ ] Done</li></ul>|135|[Risk](http://acm.tju.edu.cn/toj/showp2033.html)|TJU|||2|\n|<ul><li>- [ ] Done</li></ul>|136|[Step out of maze](http://acm.tju.edu.cn/toj/showp3520.html)|TJU|||2|\n|<ul><li>- [ ] Done</li></ul>|137|[Game Show Math](https://uva.onlinejudge.org/index.php?option=onlinejudge&page=show_problem&problem=1341)|UVA|||2|\n|<ul><li>- [ ] Done</li></ul>|138|[Knights in FEN](https://uva.onlinejudge.org/index.php?option=onlinejudge&page=show_problem&problem=1363)|UVA|||2|\n|<ul><li>- [ ] Done</li></ul>|139|[Erdos Numbers](https://uva.onlinejudge.org/index.php?option=onlinejudge&page=show_problem&problem=985)|UVA|||2|\n|<ul><li>- [ ] Done</li></ul>|140|[Unlock the Lock](https://uva.onlinejudge.org/index.php?option=onlinejudge&page=show_problem&problem=3312)|UVA|||2|\n|<ul><li>- [ ] Done</li></ul>|141|[Fire!](https://uva.onlinejudge.org/index.php?option=onlinejudge&page=show_problem&problem=2671)|UVA|||2|\n|<ul><li>- [ ] Done</li></ul>|142|[Maxim and Progressions](http://www.codechef.com/problems/MAXPR)|CodeChef|||2|\n|<ul><li>- [ ] Done</li></ul>|143|[Dominos 2](https://uva.onlinejudge.org/index.php?option=onlinejudge&page=show_problem&problem=2513)|UVA|||2|\n|<ul><li>- [ ] Done</li></ul>|144|[Counting Cells in a Blob](https://uva.onlinejudge.org/index.php?option=onlinejudge&page=show_problem&problem=812)|UVA|||2|\n|<ul><li>- [ ] Done</li></ul>|145|[A DP Problem](https://icpcarchive.ecs.baylor.edu/index.php?option=onlinejudge&page=show_problem&problem=973)|Live Archive|2003|Asia - Tehran|2|\n|<ul><li>- [ ] Done</li></ul>|146|[DFSr - Depth Hierarchy](https://www.urionlinejudge.com.br/judge/en/problems/view/1081)|URI|||2|\n|<ul><li>- [ ] Done</li></ul>|147|[Escape from Jail](http://www.spoj.com/problems/ESJAIL/)|SPOJ|||2|\n|<ul><li>- [ ] Done</li></ul>|148|[Bear and Three Musketeers](http://codeforces.com/problemset/problem/574/B)|Codeforces||Codeforces Round #318 [RussianCodeCup Thanks-Round] (Div. 2)|2|\n|<ul><li>- [ ] Done</li></ul>|149|[Chef and Reversing](http://www.codechef.com/problems/REVERSE)|CodeChef|||2|\n|<ul><li>- [ ] Done</li></ul>|150|[The Two Routes](http://codeforces.com/problemset/problem/601/A)|Codeforces||Codeforces Round #333 (Div. 1) & Codeforces Round #333 (Div. 2)|2|\n|<ul><li>- [ ] Done</li></ul>|151|[Reposts](http://codeforces.com/problemset/problem/522/A)|Codeforces||VK Cup 2015 - Qualification Round 1|2|\n|<ul><li>- [ ] Done</li></ul>|152|[Fox And Names](http://codeforces.com/problemset/problem/510/C)|Codeforces||Codeforces Round #290 (Div. 2) & Codeforces Round #290 (Div. 1)|2|\n|<ul><li>- [ ] Done</li></ul>|153|[Fox And Two Dots](http://codeforces.com/problemset/problem/510/B)|Codeforces||Codeforces Round #290 (Div. 2)|2|\n|<ul><li>- [ ] Done</li></ul>|154|[Mr. Kitayuta's Colorful Graph](http://codeforces.com/problemset/problem/506/D)|Codeforces||Codeforces Round #286 (Div. 1) & Codeforces Round #286 (Div. 2) & Codeforces Round #286 (Div. 1) & Codeforces Round #286 (Div. 2)|2|\n|<ul><li>- [ ] Done</li></ul>|155|[New Year Permutation](http://codeforces.com/problemset/problem/500/B)|Codeforces||Good Bye 2014|2|\n|<ul><li>- [ ] Done</li></ul>|156|[Strongly Connected City](http://codeforces.com/problemset/problem/475/B)|Codeforces||Bayan 2015 Contest Warm Up|2|\n|<ul><li>- [ ] Done</li></ul>|157|[DZY Loves Chemistry](http://codeforces.com/problemset/problem/445/B)|Codeforces||Codeforces Round #254 (Div. 2)|2|\n|<ul><li>- [ ] Done</li></ul>|158|[Valera and Tubes ](http://codeforces.com/problemset/problem/441/C)|Codeforces||Codeforces Round #252 (Div. 2)|2|\n|<ul><li>- [ ] Done</li></ul>|159|[Xor-tree](http://codeforces.com/problemset/problem/429/A)|Codeforces||Codeforces Round #245 (Div. 1) & Codeforces Round #245 (Div. 2)|2|\n|<ul><li>- [ ] Done</li></ul>|160|[Checkposts](http://codeforces.com/problemset/problem/427/C)|Codeforces||Codeforces Round #244 (Div. 2)|2|\n|<ul><li>- [ ] Done</li></ul>|161|[Dijkstra](http://pl.spoj.com/problems/DIJKSTRA/)|SPOJ Poland|||2|\n|<ul><li>- [ ] Done</li></ul>|162|[KATHTHI](http://www.spoj.com/problems/KATHTHI/)|SPOJ|||2|\n|<ul><li>- [ ] Done</li></ul>|163|[The Alphabet Sticker](p?ID=2)|A2 Online Judge|||2|\n|<ul><li>- [ ] Done</li></ul>|164|[The Prime conjecture](http://www.spoj.com/problems/PRIMEZUK/)|SPOJ|||2|\n|<ul><li>- [ ] Done</li></ul>|165|[The Great Coach, Fegla](p?ID=195)|A2 Online Judge|||2|\n|<ul><li>- [ ] Done</li></ul>|166|[Mice and Maze](https://uva.onlinejudge.org/index.php?option=onlinejudge&page=show_problem&problem=3553)|UVA|||2|\n|<ul><li>- [ ] Done</li></ul>|167|[Maze Traversal](https://uva.onlinejudge.org/index.php?option=onlinejudge&page=show_problem&problem=1318)|UVA|||2|\n|<ul><li>- [ ] Done</li></ul>|168|[Forwarding Emails](https://uva.onlinejudge.org/index.php?option=onlinejudge&page=show_problem&problem=3873)|UVA|||2|\n|<ul><li>- [ ] Done</li></ul>|169|[Andryusha and Colored Balloons](http://codeforces.com/problemset/problem/780/C)|Codeforces||?????????? 2017 - ????? (?????? ??? ??????-??????????)|2|\n|<ul><li>- [ ] Done</li></ul>|170|[Tennis Championship](http://codeforces.com/problemset/problem/735/C)|Codeforces||Codeforces Round #382 (Div. 2) & Codeforces Round #382 (Div. 1)|2|\n|<ul><li>- [ ] Done</li></ul>|171|[Timofey and a tree](http://codeforces.com/problemset/problem/763/A)|Codeforces||Codeforces Round #395 (Div. 1) & Codeforces Round #395 (Div. 2)|2|\n|<ul><li>- [ ] Done</li></ul>|172|[Mr. Kitayuta's Colorful Graph](http://codeforces.com/problemset/problem/505/B)|Codeforces||Codeforces Round #286 (Div. 1) & Codeforces Round #286 (Div. 2) & Codeforces Round #286 (Div. 1) & Codeforces Round #286 (Div. 2)|2|\n|<ul><li>- [ ] Done</li></ul>|173|[Journey](http://codeforces.com/problemset/problem/839/C)|Codeforces||Codeforces Round #428 (Div. 2)|2|\n|<ul><li>- [ ] Done</li></ul>|174|[Tobo or not Tobo](http://www.spoj.com/problems/ANARC08A/)|SPOJ|||3|\n|<ul><li>- [ ] Done</li></ul>|175|[Countdown](http://www.spoj.com/problems/CDOWN/)|SPOJ|||3|\n|<ul><li>- [ ] Done</li></ul>|176|[Chase](http://www.spoj.com/problems/CHASE1/)|SPOJ|||3|\n|<ul><li>- [ ] Done</li></ul>|177|[Cijevi](http://www.spoj.com/problems/CIJEVI/)|SPOJ|||3|\n|<ul><li>- [ ] Done</li></ul>|178|[Galou is back!](http://www.spoj.com/problems/GALOU/)|SPOJ|||3|\n|<ul><li>- [ ] Done</li></ul>|179|[Wandering Queen](http://www.spoj.com/problems/QUEEN/)|SPOJ|||3|\n|<ul><li>- [ ] Done</li></ul>|180|[Strings](http://www.spoj.com/problems/STSTRING/)|SPOJ|||3|\n|<ul><li>- [ ] Done</li></ul>|181|[Closest Number](http://www.spoj.com/problems/MCLONUM/)|SPOJ|||3|\n|<ul><li>- [ ] Done</li></ul>|182|[Adventure of Super Mario](https://uva.onlinejudge.org/index.php?option=onlinejudge&page=show_problem&problem=1210)|UVA|||3|\n|<ul><li>- [ ] Done</li></ul>|183|[Travel in Desert](https://uva.onlinejudge.org/index.php?option=onlinejudge&page=show_problem&problem=1757)|UVA|||3|\n|<ul><li>- [ ] Done</li></ul>|184|[Walk Through the Forest](https://uva.onlinejudge.org/index.php?option=onlinejudge&page=show_problem&problem=1858)|UVA|||3|\n|<ul><li>- [ ] Done</li></ul>|185|[Full Tank?](https://uva.onlinejudge.org/index.php?option=onlinejudge&page=show_problem&problem=2352)|UVA|||3|\n|<ul><li>- [ ] Done</li></ul>|186|[Airport Express](https://uva.onlinejudge.org/index.php?option=onlinejudge&page=show_problem&problem=2369)|UVA|||3|\n|<ul><li>- [ ] Done</li></ul>|187|[Hotel booking](https://uva.onlinejudge.org/index.php?option=onlinejudge&page=show_problem&problem=2682)|UVA|||3|\n|<ul><li>- [ ] Done</li></ul>|188|[The Tree Root](https://uva.onlinejudge.org/index.php?option=onlinejudge&page=show_problem&problem=1400)|UVA|||3|\n|<ul><li>- [ ] Done</li></ul>|189|[Railroads](https://uva.onlinejudge.org/index.php?option=onlinejudge&page=show_problem&problem=980)|UVA|||3|\n|<ul><li>- [ ] Done</li></ul>|190|[Tree Reconstruction](https://uva.onlinejudge.org/index.php?option=onlinejudge&page=show_problem&problem=1351)|UVA|||3|\n|<ul><li>- [ ] Done</li></ul>|191|[Colorful Graph](http://codeforces.com/problemset/problem/246/D)|Codeforces||Codeforces Round #151 (Div. 2)|3|\n|<ul><li>- [ ] Done</li></ul>|192|[Choosing Capital for Treeland](http://codeforces.com/problemset/problem/219/D)|Codeforces||Codeforces Round #135 (Div. 2)|3|\n|<ul><li>- [ ] Done</li></ul>|193|[Cthulhu](http://codeforces.com/problemset/problem/103/B)|Codeforces||Codeforces Beta Round #80 (Div. 1 Only) & Codeforces Beta Round #80 (Div. 2 Only)|3|\n|<ul><li>- [ ] Done</li></ul>|194|[Mysterious Present](http://codeforces.com/problemset/problem/4/D)|Codeforces||Codeforces Beta Round #4 (Div. 2 Only)|3|\n|<ul><li>- [ ] Done</li></ul>|195|[The New Villa](https://uva.onlinejudge.org/index.php?option=onlinejudge&page=show_problem&problem=257)|UVA|||3|\n|<ul><li>- [ ] Done</li></ul>|196|[Ping-Pong (Easy Version)](http://codeforces.com/problemset/problem/320/B)|Codeforces||Codeforces Round #189 (Div. 2)|3|\n|<ul><li>- [ ] Done</li></ul>|197|[Fire! Fire!! Fire!!!](https://uva.onlinejudge.org/index.php?option=onlinejudge&page=show_problem&problem=1184)|UVA|||3|\n|<ul><li>- [ ] Done</li></ul>|198|[Amazing Maze](http://www.spoj.com/problems/DCEPC701/)|SPOJ|||3|\n|<ul><li>- [ ] Done</li></ul>|199|[The PATH](https://uva.onlinejudge.org/index.php?option=onlinejudge&page=show_problem&problem=542)|UVA|||3|\n|<ul><li>- [ ] Done</li></ul>|200|[Fox Dividing Cheese](http://codeforces.com/problemset/problem/371/B)|Codeforces||Codeforces Round #218 (Div. 2)|3|\n|<ul><li>- [ ] Done</li></ul>|201|[Monkeys in a Regular Forest](https://uva.onlinejudge.org/index.php?option=onlinejudge&page=show_problem&problem=717)|UVA|||3|\n|<ul><li>- [ ] Done</li></ul>|202|[The mysterious X network](https://uva.onlinejudge.org/index.php?option=onlinejudge&page=show_problem&problem=3589)|UVA|||3|\n|<ul><li>- [ ] Done</li></ul>|203|[THE WEIRD STAIRCASE](http://www.spoj.com/problems/STAR3CAS/)|SPOJ|||3|\n|<ul><li>- [ ] Done</li></ul>|204|[Basic wall maze](https://uva.onlinejudge.org/index.php?option=onlinejudge&page=show_problem&problem=1990)|UVA|||3|\n|<ul><li>- [ ] Done</li></ul>|205|[Subway](https://uva.onlinejudge.org/index.php?option=onlinejudge&page=show_problem&problem=1330)|UVA|||3|\n|<ul><li>- [ ] Done</li></ul>|206|[Mall Mania](https://uva.onlinejudge.org/index.php?option=onlinejudge&page=show_problem&problem=2042)|UVA|||3|\n|<ul><li>- [ ] Done</li></ul>|207|[The Orc Attack](https://uva.onlinejudge.org/index.php?option=onlinejudge&page=show_problem&problem=1734)|UVA|||3|\n|<ul><li>- [ ] Done</li></ul>|208|[New to Bangladesh?](https://uva.onlinejudge.org/index.php?option=onlinejudge&page=show_problem&problem=1466)|UVA|||3|\n|<ul><li>- [ ] Done</li></ul>|209|[Rough Roads](https://uva.onlinejudge.org/index.php?option=onlinejudge&page=show_problem&problem=1297)|UVA|||3|\n|<ul><li>- [ ] Done</li></ul>|210|[Path of the righteous man](http://www.spoj.com/problems/RIOI_2_3/)|SPOJ|||3|\n|<ul><li>- [ ] Done</li></ul>|211|[Ice Cave](http://codeforces.com/problemset/problem/540/C)|Codeforces||Codeforces Round #301 (Div. 2)|3|\n|<ul><li>- [ ] Done</li></ul>|212|[Code](http://www.spoj.com/problems/CODE/)|SPOJ|||3|\n|<ul><li>- [ ] Done</li></ul>|213|[Highest Paid Toll](https://uva.onlinejudge.org/index.php?option=onlinejudge&page=show_problem&problem=3198)|UVA|||3|\n|<ul><li>- [ ] Done</li></ul>|214|[A short vacation in Disneyland](http://www.spoj.com/problems/PT07F/)|SPOJ|||3|\n|<ul><li>- [ ] Done</li></ul>|215|[Almost Union-Find](https://uva.onlinejudge.org/index.php?option=onlinejudge&page=show_problem&problem=3138)|UVA|||3|\n|<ul><li>- [ ] Done</li></ul>|216|[New Reform](http://codeforces.com/problemset/problem/659/E)|Codeforces||Codeforces Round #346 (Div. 2)|3|\n|<ul><li>- [ ] Done</li></ul>|217|[Bear and Compressing](http://codeforces.com/problemset/problem/653/B)|Codeforces||IndiaHacks 2016 - Online Edition (Div. 1 + Div. 2)|3|\n|<ul><li>- [ ] Done</li></ul>|218|[Igor In the Museum](http://codeforces.com/problemset/problem/598/D)|Codeforces||Educational Codeforces Round 1|3|\n|<ul><li>- [ ] Done</li></ul>|219|[Cleaner Robot](http://codeforces.com/problemset/problem/589/J)|Codeforces||2015-2016 ACM-ICPC, NEERC, Southern Subregional Contest (Online Mirror, ACM-ICPC Rules, Teams Preferred)|3|\n|<ul><li>- [ ] Done</li></ul>|220|[Om Nom and Dark Park](http://codeforces.com/problemset/problem/526/B)|Codeforces||ZeptoLab Code Rush 2015|3|\n|<ul><li>- [ ] Done</li></ul>|221|[Mr. Kitayuta, the Treasure Hunter](http://codeforces.com/problemset/problem/505/C)|Codeforces||Codeforces Round #286 (Div. 2) & Codeforces Round #286 (Div. 1)|3|\n|<ul><li>- [ ] Done</li></ul>|222|[Unbearable Controversy of Being](http://codeforces.com/problemset/problem/489/D)|Codeforces||Codeforces Round #277.5 (Div. 2)|3|\n|<ul><li>- [ ] Done</li></ul>|223|[Gargari and Permutations](http://codeforces.com/problemset/problem/463/D)|Codeforces||Codeforces Round #264 (Div. 2)|3|\n|<ul><li>- [ ] Done</li></ul>|224|[Valera and Elections](http://codeforces.com/problemset/problem/369/C)|Codeforces||Codeforces Round #216 (Div. 2)|3|\n|<ul><li>- [ ] Done</li></ul>|225|[Xenia and Weights](http://codeforces.com/problemset/problem/339/C)|Codeforces||Codeforces Round #197 (Div. 2)|3|\n|<ul><li>- [ ] Done</li></ul>|226|[Biridian Forest](http://codeforces.com/problemset/problem/329/B)|Codeforces||Codeforces Round #192 (Div. 1) & Codeforces Round #192 (Div. 2)|3|\n|<ul><li>- [ ] Done</li></ul>|227|[Coach](http://codeforces.com/problemset/problem/300/B)|Codeforces||Codeforces Round #181 (Div. 2)|3|\n|<ul><li>- [ ] Done</li></ul>|228|[Greg and Graph](http://codeforces.com/problemset/problem/295/B)|Codeforces||Codeforces Round #179 (Div. 1) & Codeforces Round #179 (Div. 2)|3|\n|<ul><li>- [ ] Done</li></ul>|229|[Distance in Tree](http://codeforces.com/problemset/problem/161/D)|Codeforces||VK Cup 2012 Round 1|3|\n|<ul><li>- [ ] Done</li></ul>|230|[Students and Shoelaces](http://codeforces.com/problemset/problem/129/B)|Codeforces||Codeforces Beta Round #94 (Div. 2 Only)|3|\n|<ul><li>- [ ] Done</li></ul>|231|[Alyona and the Tree](http://codeforces.com/problemset/problem/682/C)|Codeforces||Codeforces Round #358 (Div. 2)|3|\n|<ul><li>- [ ] Done</li></ul>|232|[Wedding of Sultan](https://uva.onlinejudge.org/index.php?option=onlinejudge&page=show_problem&problem=4027)|UVA|||3|\n|<ul><li>- [ ] Done</li></ul>|233|[From Dusk Till Dawn](https://uva.onlinejudge.org/index.php?option=onlinejudge&page=show_problem&problem=1128)|UVA|||3|\n|<ul><li>- [ ] Done</li></ul>|234|[Arpa's loud Owf and Mehrdad's evil plan](http://codeforces.com/problemset/problem/741/A)|Codeforces||Codeforces Round #383 (Div. 1) & Codeforces Round #383 (Div. 2)|3|\n|<ul><li>- [ ] Done</li></ul>|235|[Arpa's weak amphitheater and Mehrdad's valuable Hoses](http://codeforces.com/problemset/problem/741/B)|Codeforces||Codeforces Round #383 (Div. 1) & Codeforces Round #383 (Div. 2)|3|\n|<ul><li>- [ ] Done</li></ul>|236|[Hongcow Builds A Nation](http://codeforces.com/problemset/problem/744/A)|Codeforces||Codeforces Round #385 (Div. 1) & Codeforces Round #385 (Div. 2)|3|\n|<ul><li>- [ ] Done</li></ul>|237|[Mike and Shortcuts](http://codeforces.com/problemset/problem/689/B)|Codeforces||Codeforces Round #361 (Div. 2)|3|\n|<ul><li>- [ ] Done</li></ul>|238|[Eternal Truths](https://uva.onlinejudge.org/index.php?option=onlinejudge&page=show_problem&problem=869)|UVA|||3|\n|<ul><li>- [ ] Done</li></ul>|239|[Ocean Currents](https://uva.onlinejudge.org/index.php?option=onlinejudge&page=show_problem&problem=2620)|UVA|||4|\n|<ul><li>- [ ] Done</li></ul>|240|[Round and Round Maze](https://uva.onlinejudge.org/index.php?option=onlinejudge&page=show_problem&problem=926)|UVA|||4|\n|<ul><li>- [ ] Done</li></ul>|241|[Always Late](https://uva.onlinejudge.org/index.php?option=onlinejudge&page=show_problem&problem=1283)|UVA|||4|\n|<ul><li>- [ ] Done</li></ul>|242|[Minefield](https://uva.onlinejudge.org/index.php?option=onlinejudge&page=show_problem&problem=2313)|UVA|||4|\n|<ul><li>- [ ] Done</li></ul>|243|[Cactus](https://uva.onlinejudge.org/index.php?option=onlinejudge&page=show_problem&problem=1451)|UVA|||4|\n|<ul><li>- [ ] Done</li></ul>|244|[Undoubtedly Lucky Numbers](http://codeforces.com/problemset/problem/244/B)|Codeforces||Codeforces Round #150 (Div. 2)|4|\n|<ul><li>- [ ] Done</li></ul>|245|[King's Path](http://codeforces.com/problemset/problem/242/C)|Codeforces||Codeforces Round #149 (Div. 2)|4|\n|<ul><li>- [ ] Done</li></ul>|246|[Planets](http://codeforces.com/problemset/problem/229/B)|Codeforces||Codeforces Round #142 (Div. 1) & Codeforces Round #142 (Div. 2)|4|\n|<ul><li>- [ ] Done</li></ul>|247|[Forming Teams](http://codeforces.com/problemset/problem/216/B)|Codeforces||Codeforces Round #133 (Div. 2)|4|\n|<ul><li>- [ ] Done</li></ul>|248|[Fools and Roads](http://codeforces.com/problemset/problem/191/C)|Codeforces||Codeforces Round #121 (Div. 1) & Codeforces Round #121 (Div. 2)|4|\n|<ul><li>- [ ] Done</li></ul>|249|[Quantity of Strings](http://codeforces.com/problemset/problem/150/B)|Codeforces||Codeforces Round #107 (Div. 1) & Codeforces Round #107 (Div. 2)|4|\n|<ul><li>- [ ] Done</li></ul>|250|[Subway](http://codeforces.com/problemset/problem/131/D)|Codeforces||Codeforces Beta Round #95 (Div. 2)|4|\n|<ul><li>- [ ] Done</li></ul>|251|[Statues](http://codeforces.com/problemset/problem/128/A)|Codeforces||Codeforces Beta Round #94 (Div. 1 Only) & Codeforces Beta Round #94 (Div. 2 Only)|4|\n|<ul><li>- [ ] Done</li></ul>|252|[Eternal Victory](http://codeforces.com/problemset/problem/61/D)|Codeforces||Codeforces Beta Round #57 (Div. 2)|4|\n|<ul><li>- [ ] Done</li></ul>|253|[Serial Time!](http://codeforces.com/problemset/problem/60/B)|Codeforces||Codeforces Beta Round #56|4|\n|<ul><li>- [ ] Done</li></ul>|254|[Fire Again](http://codeforces.com/problemset/problem/35/C)|Codeforces||Codeforces Beta Round #35 (Div. 2)|4|\n|<ul><li>- [ ] Done</li></ul>|255|[Road Map](http://codeforces.com/problemset/problem/34/D)|Codeforces||Codeforces Beta Round #34 (Div. 2)|4|\n|<ul><li>- [ ] Done</li></ul>|256|[Tournament](http://codeforces.com/problemset/problem/27/B)|Codeforces||Codeforces Beta Round #27 (Codeforces format, Div. 2)|4|\n|<ul><li>- [ ] Done</li></ul>|257|[Roads not only in Berland](http://codeforces.com/problemset/problem/25/D)|Codeforces||Codeforces Beta Round #25 (Div. 2 Only)|4|\n|<ul><li>- [ ] Done</li></ul>|258|[Roads in Berland](http://codeforces.com/problemset/problem/25/C)|Codeforces||Codeforces Beta Round #25 (Div. 2 Only)|4|\n|<ul><li>- [ ] Done</li></ul>|259|[Here We Go(relians) Again](http://www.spoj.com/problems/GORELIAN/)|SPOJ|||4|\n|<ul><li>- [ ] Done</li></ul>|260|[Shopping](https://uva.onlinejudge.org/index.php?option=onlinejudge&page=show_problem&problem=2913)|UVA|||4|\n|<ul><li>- [ ] Done</li></ul>|261|[Happy Valentine Day (Valentine Maze Game)](http://www.spoj.com/problems/A_W_S_N/)|SPOJ|||4|\n|<ul><li>- [ ] Done</li></ul>|262|[Go Game](http://acm.tju.edu.cn/toj/showp2846.html)|TJU|||4|\n|<ul><li>- [ ] Done</li></ul>|263|[Krochanska is Here!](https://uva.onlinejudge.org/index.php?option=onlinejudge&page=show_problem&problem=2892)|UVA|||4|\n|<ul><li>- [ ] Done</li></ul>|264|[Jzzhu and Cities](http://codeforces.com/problemset/problem/449/B)|Codeforces||Codeforces Round #257 (Div. 1) & Codeforces Round #257 (Div. 2)|4|\n|<ul><li>- [ ] Done</li></ul>|265|[Paths and Trees](http://codeforces.com/problemset/problem/545/E)|Codeforces||Codeforces Round #303 (Div. 2)|4|\n|<ul><li>- [ ] Done</li></ul>|266|[The Labyrinth](http://codeforces.com/problemset/problem/616/C)|Codeforces||Educational Codeforces Round 5|4|\n|<ul><li>- [ ] Done</li></ul>|267|[Lomsat gelral](http://codeforces.com/problemset/problem/600/E)|Codeforces||Educational Codeforces Round 2|4|\n|<ul><li>- [ ] Done</li></ul>|268|[Phillip and Trains](http://codeforces.com/problemset/problem/585/B)|Codeforces||Codeforces Round #325 (Div. 1) & Codeforces Round #325 (Div. 2)|4|\n|<ul><li>- [ ] Done</li></ul>|269|[Tree Requests](http://codeforces.com/problemset/problem/570/D)|Codeforces||Codeforces Round #316 (Div. 2)|4|\n|<ul><li>- [ ] Done</li></ul>|270|[Destroying Roads](http://codeforces.com/problemset/problem/543/B)|Codeforces||Codeforces Round #302 (Div. 1) & Codeforces Round #302 (Div. 2)|4|\n|<ul><li>- [ ] Done</li></ul>|271|[A and B and Lecture Rooms](http://codeforces.com/problemset/problem/519/E)|Codeforces||Codeforces Round #294 (Div. 2)|4|\n|<ul><li>- [ ] Done</li></ul>|272|[New Year Santa Network](http://codeforces.com/problemset/problem/500/D)|Codeforces||Good Bye 2014|4|\n|<ul><li>- [ ] Done</li></ul>|273|[Design Tutorial: Inverse the Problem](http://codeforces.com/problemset/problem/472/D)|Codeforces||Codeforces Round #270|4|\n|<ul><li>- [ ] Done</li></ul>|274|[Two Sets](http://codeforces.com/problemset/problem/468/B)|Codeforces||Codeforces Round #268 (Div. 1) & Codeforces Round #268 (Div. 2)|4|\n|<ul><li>- [ ] Done</li></ul>|275|[Appleman and Tree](http://codeforces.com/problemset/problem/461/B)|Codeforces||Codeforces Round #263 (Div. 1) & Codeforces Round #263 (Div. 2)|4|\n|<ul><li>- [ ] Done</li></ul>|276|[Civilization](http://codeforces.com/problemset/problem/455/C)|Codeforces||Codeforces Round #260 (Div. 1) & Codeforces Round #260 (Div. 2)|4|\n|<ul><li>- [ ] Done</li></ul>|277|[A Lot of Games](http://codeforces.com/problemset/problem/455/B)|Codeforces||Codeforces Round #260 (Div. 1) & Codeforces Round #260 (Div. 2)|4|\n|<ul><li>- [ ] Done</li></ul>|278|[Restore Graph](http://codeforces.com/problemset/problem/404/C)|Codeforces||Codeforces Round #237 (Div. 2)|4|\n|<ul><li>- [ ] Done</li></ul>|279|[Propagating tree](http://codeforces.com/problemset/problem/383/C)|Codeforces||Codeforces Round #225 (Div. 1) & Codeforces Round #225 (Div. 2)|4|\n|<ul><li>- [ ] Done</li></ul>|280|[Book of Evil](http://codeforces.com/problemset/problem/337/D)|Codeforces||Codeforces Round #196 (Div. 2) & Codeforces Round #196 (Div. 1)|4|\n|<ul><li>- [ ] Done</li></ul>|281|[Ciel the Commander](http://codeforces.com/problemset/problem/321/C)|Codeforces||Codeforces Round #190 (Div. 1) & Codeforces Round #190 (Div. 2)|4|\n|<ul><li>- [ ] Done</li></ul>|282|[Cow Program](http://codeforces.com/problemset/problem/283/B)|Codeforces||Codeforces Round #174 (Div. 1) & Codeforces Round #174 (Div. 2)|4|\n|<ul><li>- [ ] Done</li></ul>|283|[Zero Tree](http://codeforces.com/problemset/problem/274/B)|Codeforces||Codeforces Round #168 (Div. 1) & Codeforces Round #168 (Div. 2)|4|\n|<ul><li>- [ ] Done</li></ul>|284|[Dorm Water Supply](http://codeforces.com/problemset/problem/107/A)|Codeforces||Codeforces Beta Round #83 (Div. 1 Only) & Codeforces Beta Round #83 (Div. 2 Only)|4|\n|<ul><li>- [ ] Done</li></ul>|285|[Fox And Jumping](http://codeforces.com/problemset/problem/510/D)|Codeforces||Codeforces Round #290 (Div. 2) & Codeforces Round #290 (Div. 1)|4|\n|<ul><li>- [ ] Done</li></ul>|286|[Tin Cutter](https://uva.onlinejudge.org/index.php?option=onlinejudge&page=show_problem&problem=244)|UVA|||4|\n|<ul><li>- [ ] Done</li></ul>|287|[A DP Problem](https://uva.onlinejudge.org/index.php?option=onlinejudge&page=show_problem&problem=3641)|UVA|||4|\n|<ul><li>- [ ] Done</li></ul>|288|[Cheapest way](https://uva.onlinejudge.org/index.php?option=onlinejudge&page=show_problem&problem=1377)|UVA|||4|\n|<ul><li>- [ ] Done</li></ul>|289|[Nephren gives a riddle](http://codeforces.com/problemset/problem/896/A)|Codeforces||Codeforces Round #449 (Div. 1) & Codeforces Round #449 (Div. 2)|4|\n|<ul><li>- [ ] Done</li></ul>|290|[Connecting Universities](http://codeforces.com/problemset/problem/700/B)|Codeforces||Codeforces Round #364 (Div. 1) & Codeforces Round #364 (Div. 2)|4|\n|<ul><li>- [ ] Done</li></ul>|291|[Alyona and a tree](http://codeforces.com/problemset/problem/739/B)|Codeforces||Codeforces Round #381 (Div. 1) & Codeforces Round #381 (Div. 2)|4|\n|<ul><li>- [ ] Done</li></ul>|292|[Chloe and pleasant prizes](http://codeforces.com/problemset/problem/743/D)|Codeforces||Codeforces Round #384 (Div. 2)|4|\n|<ul><li>- [ ] Done</li></ul>|293|[Directed Roads](http://codeforces.com/problemset/problem/711/D)|Codeforces||Codeforces Round #369 (Div. 2)|4|\n|<ul><li>- [ ] Done</li></ul>|294|[Ilya And The Tree](http://codeforces.com/problemset/problem/842/C)|Codeforces||Codeforces Round #430 (Div. 2)|4|\n|<ul><li>- [ ] Done</li></ul>|295|[Garland](http://codeforces.com/problemset/problem/767/C)|Codeforces||Codeforces Round #398 (Div. 2)|4|\n|<ul><li>- [ ] Done</li></ul>|296|[Chess Knights](p?ID=142)|A2 Online Judge|||4|\n|<ul><li>- [ ] Done</li></ul>|297|[Umnozak](http://www.spoj.com/problems/UMNOZAK/)|SPOJ|||5|\n|<ul><li>- [ ] Done</li></ul>|298|[Speedy Escape](https://uva.onlinejudge.org/index.php?option=onlinejudge&page=show_problem&problem=2740)|UVA|||5|\n|<ul><li>- [ ] Done</li></ul>|299|[Text Editor](http://codeforces.com/problemset/problem/253/C)|Codeforces||Codeforces Round #154 (Div. 2)|5|\n|<ul><li>- [ ] Done</li></ul>|300|[Blood Cousins](http://codeforces.com/problemset/problem/208/E)|Codeforces||Codeforces Round #130 (Div. 2)|5|\n|<ul><li>- [ ] Done</li></ul>|301|[Jumping on Walls](http://codeforces.com/problemset/problem/198/B)|Codeforces||Codeforces Round #125 (Div. 1) & Codeforces Round #125 (Div. 2)|5|\n|<ul><li>- [ ] Done</li></ul>|302|[Infinite Maze](http://codeforces.com/problemset/problem/196/B)|Codeforces||Codeforces Round #124 (Div. 1) & Codeforces Round #124 (Div. 2)|5|\n|<ul><li>- [ ] Done</li></ul>|303|[Cutting Figure](http://codeforces.com/problemset/problem/193/A)|Codeforces||Codeforces Round #122 (Div. 1) & Codeforces Round #122 (Div. 2)|5|\n|<ul><li>- [ ] Done</li></ul>|304|[STL](http://codeforces.com/problemset/problem/190/C)|Codeforces||Codeforces Round #120 (Div. 2)|5|\n|<ul><li>- [ ] Done</li></ul>|305|[Missile Silos](http://codeforces.com/problemset/problem/144/D)|Codeforces||Codeforces Round #103 (Div. 2)|5|\n|<ul><li>- [ ] Done</li></ul>|306|[Logo Turtle](http://codeforces.com/problemset/problem/132/C)|Codeforces||Codeforces Beta Round #96 (Div. 1) & Codeforces Beta Round #96 (Div. 2)|5|\n|<ul><li>- [ ] Done</li></ul>|307|[Cycle](http://codeforces.com/problemset/problem/117/C)|Codeforces||Codeforces Beta Round #88|5|\n|<ul><li>- [ ] Done</li></ul>|308|[Volleyball](http://codeforces.com/problemset/problem/95/C)|Codeforces||Codeforces Beta Round #77 (Div. 1 Only) & Codeforces Beta Round #77 (Div. 2 Only)|5|\n|<ul><li>- [ ] Done</li></ul>|309|[Square Earth?](http://codeforces.com/problemset/problem/57/A)|Codeforces||Codeforces Beta Round #53|5|\n|<ul><li>- [ ] Done</li></ul>|310|[Mail Stamps](http://codeforces.com/problemset/problem/29/C)|Codeforces||Codeforces Beta Round #29 (Div. 2, Codeforces format)|5|\n|<ul><li>- [ ] Done</li></ul>|311|[pSort](http://codeforces.com/problemset/problem/28/B)|Codeforces||Codeforces Beta Round #28 (Codeforces format)|5|\n|<ul><li>- [ ] Done</li></ul>|312|[Hierarchy](http://codeforces.com/problemset/problem/17/B)|Codeforces||Codeforces Beta Round #17|5|\n|<ul><li>- [ ] Done</li></ul>|313|[Two Paths](http://codeforces.com/problemset/problem/14/D)|Codeforces||Codeforces Beta Round #14 (Div. 2)|5|\n|<ul><li>- [ ] Done</li></ul>|314|[Masud Rana](https://uva.onlinejudge.org/index.php?option=onlinejudge&page=show_problem&problem=2647)|UVA|||5|\n|<ul><li>- [ ] Done</li></ul>|315|[Chinese Checkers](https://uva.onlinejudge.org/index.php?option=onlinejudge&page=show_problem&problem=800)|UVA|||5|\n|<ul><li>- [ ] Done</li></ul>|316|[GRAVITY](http://www.spoj.com/problems/GRAVITY/)|SPOJ|||5|\n|<ul><li>- [ ] Done</li></ul>|317|[Tutorial BFS](http://www.spoj.com/problems/TUTBFS/)|SPOJ|||5|\n|<ul><li>- [ ] Done</li></ul>|318|[Breaking Good](http://codeforces.com/problemset/problem/507/E)|Codeforces||Codeforces Round #287 (Div. 2)|5|\n|<ul><li>- [ ] Done</li></ul>|319|[Minimum spanning tree for each edge](http://codeforces.com/problemset/problem/609/E)|Codeforces||Educational Codeforces Round 3|5|\n|<ul><li>- [ ] Done</li></ul>|320|[Moodular Arithmetic](http://codeforces.com/problemset/problem/603/B)|Codeforces||Codeforces Round #334 (Div. 1) & Codeforces Round #334 (Div. 2)|5|\n|<ul><li>- [ ] Done</li></ul>|321|[Super M](http://codeforces.com/problemset/problem/592/D)|Codeforces||Codeforces Round #328 (Div. 2)|5|\n|<ul><li>- [ ] Done</li></ul>|322|[Three States](http://codeforces.com/problemset/problem/590/C)|Codeforces||Codeforces Round #327 (Div. 1) & Codeforces Round #327 (Div. 2)|5|\n|<ul><li>- [ ] Done</li></ul>|323|[Vitaly and Cycle](http://codeforces.com/problemset/problem/557/D)|Codeforces||Codeforces Round #311 (Div. 2)|5|\n|<ul><li>- [ ] Done</li></ul>|324|[Inversions problem](http://codeforces.com/problemset/problem/513/G1)|Codeforces||Rockethon 2015|5|\n|<ul><li>- [ ] Done</li></ul>|325|[Chocolate](http://codeforces.com/problemset/problem/490/D)|Codeforces||Codeforces Round #279 (Div. 2)|5|\n|<ul><li>- [ ] Done</li></ul>|326|[Valid Sets](http://codeforces.com/problemset/problem/486/D)|Codeforces||Codeforces Round #277 (Div. 2)|5|\n|<ul><li>- [ ] Done</li></ul>|327|[Dima and Bacteria](http://codeforces.com/problemset/problem/400/D)|Codeforces||Codeforces Round #234 (Div. 2)|5|\n|<ul><li>- [ ] Done</li></ul>|328|[Tree and Queries](http://codeforces.com/problemset/problem/375/D)|Codeforces||Codeforces Round #221 (Div. 1)|5|\n|<ul><li>- [ ] Done</li></ul>|329|[Inna and Dima](http://codeforces.com/problemset/problem/374/C)|Codeforces||Codeforces Round #220 (Div. 2)|5|\n|<ul><li>- [ ] Done</li></ul>|330|[Water Tree](http://codeforces.com/problemset/problem/343/D)|Codeforces||Codeforces Round #200 (Div. 1)|5|\n|<ul><li>- [ ] Done</li></ul>|331|[Block Tower](http://codeforces.com/problemset/problem/327/D)|Codeforces||Codeforces Round #191 (Div. 2)|5|\n|<ul><li>- [ ] Done</li></ul>|332|[Yaroslav and Time](http://codeforces.com/problemset/problem/301/B)|Codeforces||Codeforces Round #182 (Div. 1) & Codeforces Round #182 (Div. 2)|5|\n|<ul><li>- [ ] Done</li></ul>|333|[Connected Components](http://codeforces.com/problemset/problem/292/D)|Codeforces||Croc Champ 2013 - Round 1|5|\n|<ul><li>- [ ] Done</li></ul>|334|[Cycle in Graph](http://codeforces.com/problemset/problem/263/D)|Codeforces||Codeforces Round #161 (Div. 2)|5|\n|<ul><li>- [ ] Done</li></ul>|335|[Compatible Numbers](http://codeforces.com/problemset/problem/165/E)|Codeforces||Codeforces Round #112 (Div. 2)|5|\n|<ul><li>- [ ] Done</li></ul>|336|[Kay and Snowflake](http://codeforces.com/problemset/problem/685/B)|Codeforces||Codeforces Round #359 (Div. 1) & Codeforces Round #359 (Div. 2)|5|\n|<ul><li>- [ ] Done</li></ul>|337|[Theseus and labyrinth](http://codeforces.com/problemset/problem/676/D)|Codeforces||Codeforces Round #354 (Div. 2)|5|\n|<ul><li>- [ ] Done</li></ul>|338|[Comments](http://codeforces.com/problemset/problem/747/E)|Codeforces||Codeforces Round #387 (Div. 2)|5|\n|<ul><li>- [ ] Done</li></ul>|339|[Transmissão de Energia](https://www.urionlinejudge.com.br/judge/en/problems/view/2300)|URI|||5|\n|<ul><li>- [ ] Done</li></ul>|340|[MergeSort](http://community.topcoder.com/stat?c=problem_statement&pm=1705)|TopCoder||SRM 151 - Div1 medium - Div2 hard] (4560)|5|\n|<ul><li>- [ ] Done</li></ul>|341|[Kruskal](http://www.spoj.com/problems/KRUSKAL/)|SPOJ|||5|\n|<ul><li>- [ ] Done</li></ul>|342|[Bitwise Formula](http://codeforces.com/problemset/problem/778/B)|Codeforces||Codeforces Round #402 (Div. 1) & Codeforces Round #402 (Div. 2)|5|\n|<ul><li>- [ ] Done</li></ul>|343|[Berzerk](http://codeforces.com/problemset/problem/786/A)|Codeforces||Codeforces Round #406 (Div. 1) & Codeforces Round #406 (Div. 2)|5|\n|<ul><li>- [ ] Done</li></ul>|344|[Weird journey](http://codeforces.com/problemset/problem/788/B)|Codeforces||Codeforces Round #407 (Div. 1) & Codeforces Round #407 (Div. 2)|5|\n|<ul><li>- [ ] Done</li></ul>|345|[Complete The Graph](http://codeforces.com/problemset/problem/715/B)|Codeforces||Codeforces Round #372 (Div. 1) & Codeforces Round #372 (Div. 2)|5|\n|<ul><li>- [ ] Done</li></ul>|346|[Misha, Grisha and Underground](http://codeforces.com/problemset/problem/832/D)|Codeforces||Codeforces Round #425 (Div. 2)|5|\n|<ul><li>- [ ] Done</li></ul>|347|[An overnight dance in discotheque](http://codeforces.com/problemset/problem/814/D)|Codeforces||Codeforces Round #418 (Div. 2)|5|\n|<ul><li>- [ ] Done</li></ul>|348|[Mahmoud and a Dictionary](http://codeforces.com/problemset/problem/766/D)|Codeforces||Codeforces Round #396 (Div. 2)|5|\n|<ul><li>- [ ] Done</li></ul>|349|[Persistent Bookcase ](http://codeforces.com/problemset/problem/707/D)|Codeforces||Codeforces Round #368 (Div. 2)|5|\n|<ul><li>- [ ] Done</li></ul>|350|[What is for dinner?](http://codeforces.com/problemset/problem/33/A)|Codeforces||Codeforces Beta Round #33 (Codeforces format)|5|\n|<ul><li>- [ ] Done</li></ul>|351|[BFS (Binary Fibonacci String)](https://uva.onlinejudge.org/index.php?option=onlinejudge&page=show_problem&problem=3192)|UVA|||5|\n|<ul><li>- [ ] Done</li></ul>|352|[Fixed Partition Contest Management](http://www.spoj.com/problems/CONTEST/)|SPOJ|||6|\n|<ul><li>- [ ] Done</li></ul>|353|[Dispute](http://codeforces.com/problemset/problem/242/D)|Codeforces||Codeforces Round #149 (Div. 2)|6|\n|<ul><li>- [ ] Done</li></ul>|354|[The Road to Berland is Paved With Good Intentions](http://codeforces.com/problemset/problem/228/E)|Codeforces||Codeforces Round #141 (Div. 2)|6|\n|<ul><li>- [ ] Done</li></ul>|355|[Game](http://codeforces.com/problemset/problem/213/A)|Codeforces||Codeforces Round #131 (Div. 1) & Codeforces Round #131 (Div. 2)|6|\n|<ul><li>- [ ] Done</li></ul>|356|[Police Station](http://codeforces.com/problemset/problem/208/C)|Codeforces||Codeforces Round #130 (Div. 2)|6|\n|<ul><li>- [ ] Done</li></ul>|357|[Solitaire](http://codeforces.com/problemset/problem/208/B)|Codeforces||Codeforces Round #130 (Div. 2)|6|\n|<ul><li>- [ ] Done</li></ul>|358|[AlgoRace](http://codeforces.com/problemset/problem/187/B)|Codeforces||Codeforces Round #119 (Div. 1) & Codeforces Round #119 (Div. 2)|6|\n|<ul><li>- [ ] Done</li></ul>|359|[Chamber of Secrets](http://codeforces.com/problemset/problem/173/B)|Codeforces||Croc Champ 2012 - Round 1|6|\n|<ul><li>- [ ] Done</li></ul>|360|[Bertown roads](http://codeforces.com/problemset/problem/118/E)|Codeforces||Codeforces Beta Round #89 (Div. 2)|6|\n|<ul><li>- [ ] Done</li></ul>|361|[String Problem](http://codeforces.com/problemset/problem/33/B)|Codeforces||Codeforces Beta Round #33 (Codeforces format)|6|\n|<ul><li>- [ ] Done</li></ul>|362|[Ant on the Tree](http://codeforces.com/problemset/problem/29/D)|Codeforces||Codeforces Beta Round #29 (Div. 2, Codeforces format)|6|\n|<ul><li>- [ ] Done</li></ul>|363|[Road Rally](https://icpcarchive.ecs.baylor.edu/index.php?option=onlinejudge&page=show_problem&problem=3962)|Live Archive|2011|North America - Mid-Atlantic USA|6|\n|<ul><li>- [ ] Done</li></ul>|364|[Little Pony and Summer Sun Celebration](http://codeforces.com/problemset/problem/453/C)|Codeforces||Codeforces Round #259 (Div. 1) & Codeforces Round #259 (Div. 2)|6|\n|<ul><li>- [ ] Done</li></ul>|365|[Caisa and Tree](http://codeforces.com/problemset/problem/463/E)|Codeforces||Codeforces Round #264 (Div. 2)|6|\n|<ul><li>- [ ] Done</li></ul>|366|[Fedor and Essay](http://codeforces.com/problemset/problem/467/D)|Codeforces||Codeforces Round #267 (Div. 2)|6|\n|<ul><li>- [ ] Done</li></ul>|367|[Increasing Shortest Path](p?ID=4)|A2 Online Judge|||6|\n|<ul><li>- [ ] Done</li></ul>|368|[Graph Coloring](http://codeforces.com/problemset/problem/662/B)|Codeforces||CROC 2016 - Final Round [Private, For Onsite Finalists Only]|6|\n|<ul><li>- [ ] Done</li></ul>|369|[Polycarp and Hay](http://codeforces.com/problemset/problem/659/F)|Codeforces||Codeforces Round #346 (Div. 2)|6|\n|<ul><li>- [ ] Done</li></ul>|370|[Table Compression](http://codeforces.com/problemset/problem/650/C)|Codeforces||Codeforces Round #345 (Div. 1) & Codeforces Round #345 (Div. 2)|6|\n|<ul><li>- [ ] Done</li></ul>|371|[Making Genome in Berland](http://codeforces.com/problemset/problem/638/B)|Codeforces||VK Cup 2016 - Qualification Round 2|6|\n|<ul><li>- [ ] Done</li></ul>|372|[Ants in Leaves](http://codeforces.com/problemset/problem/622/E)|Codeforces||Educational Codeforces Round 7|6|\n|<ul><li>- [ ] Done</li></ul>|373|[Hamiltonian Spanning Tree](http://codeforces.com/problemset/problem/618/D)|Codeforces||Wunder Fund Round 2016 (Div. 1 + Div. 2 combined)|6|\n|<ul><li>- [ ] Done</li></ul>|374|[Invariance of Tree](http://codeforces.com/problemset/problem/576/B)|Codeforces||Codeforces Round #319 (Div. 1) & Codeforces Round #319 (Div. 2)|6|\n|<ul><li>- [ ] Done</li></ul>|375|[Love Triangles](http://codeforces.com/problemset/problem/553/C)|Codeforces||Codeforces Round #309 (Div. 1) & Codeforces Round #309 (Div. 2)|6|\n|<ul><li>- [ ] Done</li></ul>|376|[Looksery Party](http://codeforces.com/problemset/problem/549/B)|Codeforces||Looksery Cup 2015|6|\n|<ul><li>- [ ] Done</li></ul>|377|[Demiurges Play Again](http://codeforces.com/problemset/problem/538/E)|Codeforces||Codeforces Round #300|6|\n|<ul><li>- [ ] Done</li></ul>|378|[Work Group](http://codeforces.com/problemset/problem/533/B)|Codeforces||VK Cup 2015 - Round 2 (unofficial online mirror, Div. 1 only)|6|\n|<ul><li>- [ ] Done</li></ul>|379|[Tanya and Password](http://codeforces.com/problemset/problem/508/D)|Codeforces||Codeforces Round #288 (Div. 2)|6|\n|<ul><li>- [ ] Done</li></ul>|380|[Mr. Kitayuta's Technology](http://codeforces.com/problemset/problem/505/D)|Codeforces||Codeforces Round #286 (Div. 2) & Codeforces Round #286 (Div. 1)|6|\n|<ul><li>- [ ] Done</li></ul>|381|[Information Graph](http://codeforces.com/problemset/problem/466/E)|Codeforces||Codeforces Round #266 (Div. 2)|6|\n|<ul><li>- [ ] Done</li></ul>|382|[Divisors](http://codeforces.com/problemset/problem/448/E)|Codeforces||Codeforces Round #256 (Div. 2)|6|\n|<ul><li>- [ ] Done</li></ul>|383|[Giving Awards](http://codeforces.com/problemset/problem/412/D)|Codeforces||Coder-Strike 2014 - Round 1|6|\n|<ul><li>- [ ] Done</li></ul>|384|[Apple Tree](http://codeforces.com/problemset/problem/348/B)|Codeforces||Codeforces Round #202 (Div. 1) & Codeforces Round #202 (Div. 2)|6|\n|<ul><li>- [ ] Done</li></ul>|385|[EKG](http://codeforces.com/problemset/problem/316/B2)|Codeforces||ABBYY Cup 3.0|6|\n|<ul><li>- [ ] Done</li></ul>|386|[EKG](http://codeforces.com/problemset/problem/316/B1)|Codeforces||ABBYY Cup 3.0|6|\n|<ul><li>- [ ] Done</li></ul>|387|[Sereja and Periods](http://codeforces.com/problemset/problem/314/B)|Codeforces||Codeforces Round #187 (Div. 1) & Codeforces Round #187 (Div. 2)|6|\n|<ul><li>- [ ] Done</li></ul>|388|[Greg and Friends](http://codeforces.com/problemset/problem/295/C)|Codeforces||Codeforces Round #179 (Div. 1) & Codeforces Round #179 (Div. 2)|6|\n|<ul><li>- [ ] Done</li></ul>|389|[Party](http://codeforces.com/problemset/problem/177/C2)|Codeforces||ABBYY Cup 2.0 - Easy|6|\n|<ul><li>- [ ] Done</li></ul>|390|[Party](http://codeforces.com/problemset/problem/177/C1)|Codeforces||ABBYY Cup 2.0 - Easy|6|\n|<ul><li>- [ ] Done</li></ul>|391|[Ring Road 2](http://codeforces.com/problemset/problem/27/D)|Codeforces||Codeforces Beta Round #27 (Codeforces format, Div. 2)|6|\n|<ul><li>- [ ] Done</li></ul>|392|[World Tour](http://codeforces.com/problemset/problem/666/B)|Codeforces||Codeforces Round #349 (Div. 1) & Codeforces Round #349 (Div. 2)|6|\n|<ul><li>- [ ] Done</li></ul>|393|[Gifts by the List](http://codeforces.com/problemset/problem/681/D)|Codeforces||Codeforces Round #357 (Div. 2)|6|\n|<ul><li>- [ ] Done</li></ul>|394|[Leha and another game about graph](http://codeforces.com/problemset/problem/840/B)|Codeforces||Codeforces Round #429 (Div. 1) & Codeforces Round #429 (Div. 2)|6|\n|<ul><li>- [ ] Done</li></ul>|395|[Legacy](http://codeforces.com/problemset/problem/786/B)|Codeforces||Codeforces Round #406 (Div. 1) & Codeforces Round #406 (Div. 2)|6|\n|<ul><li>- [ ] Done</li></ul>|396|[The Great Mixing](http://codeforces.com/problemset/problem/788/C)|Codeforces||Codeforces Round #407 (Div. 1) & Codeforces Round #407 (Div. 2)|6|\n|<ul><li>- [ ] Done</li></ul>|397|[Arpa’s overnight party and Mehrdad’s silent entering](http://codeforces.com/problemset/problem/741/C)|Codeforces||Codeforces Round #383 (Div. 1) & Codeforces Round #383 (Div. 2)|6|\n|<ul><li>- [ ] Done</li></ul>|398|[Vladik and Favorite Game](http://codeforces.com/problemset/problem/811/D)|Codeforces||Codeforces Round #416 (Div. 2)|6|\n|<ul><li>- [ ] Done</li></ul>|399|[Mahmoud and a xor trip](http://codeforces.com/problemset/problem/766/E)|Codeforces||Codeforces Round #396 (Div. 2)|6|\n|<ul><li>- [ ] Done</li></ul>|400|[Caravans](http://acm.timus.ru/problem.aspx?space=1&num=2034)|Timus|||6|\n|<ul><li>- [ ] Done</li></ul>|401|[Segment Tree](http://www.spoj.com/problems/SEGTREE/)|SPOJ|||6|\n|<ul><li>- [ ] Done</li></ul>|402|[Hex Tile Equations](http://www.spoj.com/problems/HEXTILE/)|SPOJ|||7|\n|<ul><li>- [ ] Done</li></ul>|403|[Flight Planning](https://uva.onlinejudge.org/index.php?option=onlinejudge&page=show_problem&problem=742)|UVA|||7|\n|<ul><li>- [ ] Done</li></ul>|404|[DRM](https://uva.onlinejudge.org/index.php?option=onlinejudge&page=show_problem&problem=2311)|UVA|||7|\n|<ul><li>- [ ] Done</li></ul>|405|[Blood Cousins Return](http://codeforces.com/problemset/problem/246/E)|Codeforces||Codeforces Round #151 (Div. 2)|7|\n|<ul><li>- [ ] Done</li></ul>|406|[World Eater Brothers](http://codeforces.com/problemset/problem/238/C)|Codeforces||Codeforces Round #148 (Div. 1) & Codeforces Round #148 (Div. 2)|7|\n|<ul><li>- [ ] Done</li></ul>|407|[Cactus](http://codeforces.com/problemset/problem/231/E)|Codeforces||Codeforces Round #143 (Div. 2)|7|\n|<ul><li>- [ ] Done</li></ul>|408|[Weak Memory](http://codeforces.com/problemset/problem/187/C)|Codeforces||Codeforces Round #119 (Div. 1) & Codeforces Round #119 (Div. 2)|7|\n|<ul><li>- [ ] Done</li></ul>|409|[Variable, or There and Back Again](http://codeforces.com/problemset/problem/164/A)|Codeforces||VK Cup 2012 Round 3|7|\n|<ul><li>- [ ] Done</li></ul>|410|[Edges in MST](http://codeforces.com/problemset/problem/160/D)|Codeforces||Codeforces Round #111 (Div. 2)|7|\n|<ul><li>- [ ] Done</li></ul>|411|[Pairs of Numbers](http://codeforces.com/problemset/problem/134/B)|Codeforces||Codeforces Testing Round #3|7|\n|<ul><li>- [ ] Done</li></ul>|412|[General Mobilization](http://codeforces.com/problemset/problem/82/C)|Codeforces||Yandex.Algorithm 2011 Qualification 2|7|\n|<ul><li>- [ ] Done</li></ul>|413|[Beavermuncher-0xFF](http://codeforces.com/problemset/problem/77/C)|Codeforces||Codeforces Beta Round #69 (Div. 1 Only) & Codeforces Beta Round #69 (Div. 2 Only)|7|\n|<ul><li>- [ ] Done</li></ul>|414|[Chessboard Billiard](http://codeforces.com/problemset/problem/74/C)|Codeforces||Codeforces Beta Round #68|7|\n|<ul><li>- [ ] Done</li></ul>|415|[Shortest Path](http://codeforces.com/problemset/problem/59/E)|Codeforces||Codeforces Beta Round #55 (Div. 2)|7|\n|<ul><li>- [ ] Done</li></ul>|416|[Knights](http://codeforces.com/problemset/problem/33/D)|Codeforces||Codeforces Beta Round #33 (Codeforces format)|7|\n|<ul><li>- [ ] Done</li></ul>|417|[Chocolate](http://codeforces.com/problemset/problem/31/D)|Codeforces||Codeforces Beta Round #31 (Div. 2, Codeforces format)|7|\n|<ul><li>- [ ] Done</li></ul>|418|[Fairy](http://codeforces.com/problemset/problem/19/E)|Codeforces||Codeforces Beta Round #19|7|\n|<ul><li>- [ ] Done</li></ul>|419|[Event Dates](http://codeforces.com/problemset/problem/45/D)|Codeforces||School Team Contest #3 (Winter Computer School 2010/11)|7|\n|<ul><li>- [ ] Done</li></ul>|420|[Rotate to root](https://uva.onlinejudge.org/index.php?option=onlinejudge&page=show_problem&problem=2735)|UVA|||7|\n|<ul><li>- [ ] Done</li></ul>|421|[Bear and Forgotten Tree 2](http://codeforces.com/problemset/problem/653/E)|Codeforces||IndiaHacks 2016 - Online Edition (Div. 1 + Div. 2)|7|\n|<ul><li>- [ ] Done</li></ul>|422|[Pursuit For Artifacts](http://codeforces.com/problemset/problem/652/E)|Codeforces||Educational Codeforces Round 10|7|\n|<ul><li>- [ ] Done</li></ul>|423|[Three-dimensional Turtle Super Computer ](http://codeforces.com/problemset/problem/638/D)|Codeforces||VK Cup 2016 - Qualification Round 2|7|\n|<ul><li>- [ ] Done</li></ul>|424|[Road Improvement](http://codeforces.com/problemset/problem/638/C)|Codeforces||VK Cup 2016 - Qualification Round 2|7|\n|<ul><li>- [ ] Done</li></ul>|425|[Famil Door and Roads](http://codeforces.com/problemset/problem/629/E)|Codeforces||Codeforces Round #343 (Div. 2)|7|\n|<ul><li>- [ ] Done</li></ul>|426|[Square Root of Permutation](http://codeforces.com/problemset/problem/612/E)|Codeforces||Educational Codeforces Round 4|7|\n|<ul><li>- [ ] Done</li></ul>|427|[Acyclic Organic Compounds](http://codeforces.com/problemset/problem/601/D)|Codeforces||Codeforces Round #333 (Div. 1)|7|\n|<ul><li>- [ ] Done</li></ul>|428|[Tourist Guide](http://codeforces.com/problemset/problem/589/H)|Codeforces||2015-2016 ACM-ICPC, NEERC, Southern Subregional Contest (Online Mirror, ACM-ICPC Rules, Teams Preferred)|7|\n|<ul><li>- [ ] Done</li></ul>|429|[Bribes](http://codeforces.com/problemset/problem/575/B)|Codeforces||Bubble Cup 8 - Finals [Online Mirror]|7|\n|<ul><li>- [ ] Done</li></ul>|430|[Bear and Drawing](http://codeforces.com/problemset/problem/573/C)|Codeforces||Codeforces Round #318 [RussianCodeCup Thanks-Round] (Div. 1) & Codeforces Round #318 [RussianCodeCup Thanks-Round] (Div. 2)|7|\n|<ul><li>- [ ] Done</li></ul>|431|[President and Roads](http://codeforces.com/problemset/problem/567/E)|Codeforces||Codeforces Round #Pi (Div. 2)|7|\n|<ul><li>- [ ] Done</li></ul>|432|[Case of Computer Network](http://codeforces.com/problemset/problem/555/E)|Codeforces||Codeforces Round #310 (Div. 1)|7|\n|<ul><li>- [ ] Done</li></ul>|433|[Mike and Fish](http://codeforces.com/problemset/problem/547/D)|Codeforces||Codeforces Round #305 (Div. 1)|7|\n|<ul><li>- [ ] Done</li></ul>|434|[Data Center Drama](http://codeforces.com/problemset/problem/527/E)|Codeforces||Codeforces Round #296 (Div. 2) & Codeforces Round #296 (Div. 1)|7|\n|<ul><li>- [ ] Done</li></ul>|435|[Treeland Tour](http://codeforces.com/problemset/problem/490/F)|Codeforces||Codeforces Round #279 (Div. 2)|7|\n|<ul><li>- [ ] Done</li></ul>|436|[President's Path](http://codeforces.com/problemset/problem/416/E)|Codeforces||Codeforces Round #241 (Div. 2)|7|\n|<ul><li>- [ ] Done</li></ul>|437|[Hill Climbing](http://codeforces.com/problemset/problem/406/D)|Codeforces||Codeforces Round #238 (Div. 1)|7|\n|<ul><li>- [ ] Done</li></ul>|438|[Graph Cutting](http://codeforces.com/problemset/problem/405/E)|Codeforces||Codeforces Round #238 (Div. 2) & Codeforces Round #238 (Div. 1)|7|\n|<ul><li>- [ ] Done</li></ul>|439|[Ksenia and Pawns](http://codeforces.com/problemset/problem/382/D)|Codeforces||Codeforces Round #224 (Div. 2)|7|\n|<ul><li>- [ ] Done</li></ul>|440|[Valera and Fools](http://codeforces.com/problemset/problem/369/D)|Codeforces||Codeforces Round #216 (Div. 2)|7|\n|<ul><li>- [ ] Done</li></ul>|441|[Dima and Trap Graph](http://codeforces.com/problemset/problem/366/D)|Codeforces||Codeforces Round #214 (Div. 2)|7|\n|<ul><li>- [ ] Done</li></ul>|442|[Fools and Foolproof Roads](http://codeforces.com/problemset/problem/362/D)|Codeforces||Codeforces Round #212 (Div. 2)|7|\n|<ul><li>- [ ] Done</li></ul>|443|[Lucky Number Representation](http://codeforces.com/problemset/problem/354/E)|Codeforces||Codeforces Round #206 (Div. 1)|7|\n|<ul><li>- [ ] Done</li></ul>|444|[Wrong Floyd](http://codeforces.com/problemset/problem/350/E)|Codeforces||Codeforces Round #203 (Div. 2)|7|\n|<ul><li>- [ ] Done</li></ul>|445|[Tree-String Problem](http://codeforces.com/problemset/problem/291/E)|Codeforces||Croc Champ 2013 - Qualification Round|7|\n|<ul><li>- [ ] Done</li></ul>|446|[Lovely Matrix](http://codeforces.com/problemset/problem/274/D)|Codeforces||Codeforces Round #168 (Div. 1)|7|\n|<ul><li>- [ ] Done</li></ul>|447|[Circle of Numbers](http://codeforces.com/problemset/problem/263/C)|Codeforces||Codeforces Round #161 (Div. 2)|7|\n|<ul><li>- [ ] Done</li></ul>|448|[Little Elephant and Tree](http://codeforces.com/problemset/problem/258/E)|Codeforces||Codeforces Round #157 (Div. 1)|7|\n|<ul><li>- [ ] Done</li></ul>|449|[Snake](http://codeforces.com/problemset/problem/225/D)|Codeforces||Codeforces Round #139 (Div. 2)|7|\n|<ul><li>- [ ] Done</li></ul>|450|[Bear and Square Grid](http://codeforces.com/problemset/problem/679/C)|Codeforces||Codeforces Round #356 (Div. 1) & Codeforces Round #356 (Div. 2)|7|\n|<ul><li>- [ ] Done</li></ul>|451|[Peterson Polyglot](http://codeforces.com/problemset/problem/778/C)|Codeforces||Codeforces Round #402 (Div. 1) & Codeforces Round #402 (Div. 2)|7|\n|<ul><li>- [ ] Done</li></ul>|452|[Break Up](http://codeforces.com/problemset/problem/700/C)|Codeforces||Codeforces Round #364 (Div. 1) & Codeforces Round #364 (Div. 2)|7|\n|<ul><li>- [ ] Done</li></ul>|453|[Okabe and City](http://codeforces.com/problemset/problem/821/D)|Codeforces||Codeforces Round #420 (Div. 2)|7|\n|<ul><li>- [ ] Done</li></ul>|454|[Colorado Potato Beetle](http://codeforces.com/problemset/problem/243/C)|Codeforces||Codeforces Round #150 (Div. 1) & Codeforces Round #150 (Div. 2)|8|\n|<ul><li>- [ ] Done</li></ul>|455|[Flights](http://codeforces.com/problemset/problem/241/E)|Codeforces||Bayan 2012-2013 Elimination Round (ACM ICPC Rules, English statements)|8|\n|<ul><li>- [ ] Done</li></ul>|456|[T-decomposition](http://codeforces.com/problemset/problem/237/D)|Codeforces||Codeforces Round #147 (Div. 2)|8|\n|<ul><li>- [ ] Done</li></ul>|457|[IT Restaurants](http://codeforces.com/problemset/problem/212/E)|Codeforces||VK Cup 2012 Finals (unofficial online-version)|8|\n|<ul><li>- [ ] Done</li></ul>|458|[Opening Portals](http://codeforces.com/problemset/problem/196/E)|Codeforces||Codeforces Round #124 (Div. 1)|8|\n|<ul><li>- [ ] Done</li></ul>|459|[Cyclic Coloring](http://codeforces.com/problemset/problem/183/C)|Codeforces||Croc Champ 2012 - Final|8|\n|<ul><li>- [ ] Done</li></ul>|460|[Archaeology](http://codeforces.com/problemset/problem/176/E)|Codeforces||Croc Champ 2012 - Round 2|8|\n|<ul><li>- [ ] Done</li></ul>|461|[e-Government](http://codeforces.com/problemset/problem/163/E)|Codeforces||VK Cup 2012 Round 2|8|\n|<ul><li>- [ ] Done</li></ul>|462|[Take-off Ramps](http://codeforces.com/problemset/problem/141/D)|Codeforces||Codeforces Round #101 (Div. 2)|8|\n|<ul><li>- [ ] Done</li></ul>|463|[Beautiful Road](http://codeforces.com/problemset/problem/87/D)|Codeforces||Codeforces Beta Round #73 (Div. 1 Only)|8|\n|<ul><li>- [ ] Done</li></ul>|464|[Petya and Tree](http://codeforces.com/problemset/problem/85/C)|Codeforces||Yandex.Algorithm 2011 Round 1|8|\n|<ul><li>- [ ] Done</li></ul>|465|[Password](http://codeforces.com/problemset/problem/79/D)|Codeforces||Codeforces Beta Round #71|8|\n|<ul><li>- [ ] Done</li></ul>|466|[FreeDiv](http://codeforces.com/problemset/problem/73/D)|Codeforces||Codeforces Beta Round #66|8|\n|<ul><li>- [ ] Done</li></ul>|467|[Sweets Game](http://codeforces.com/problemset/problem/63/E)|Codeforces||Codeforces Beta Round #59 (Div. 2)|8|\n|<ul><li>- [ ] Done</li></ul>|468|[Mushroom Strife](http://codeforces.com/problemset/problem/60/C)|Codeforces||Codeforces Beta Round #56|8|\n|<ul><li>- [ ] Done</li></ul>|469|[Quarrel](http://codeforces.com/problemset/problem/29/E)|Codeforces||Codeforces Beta Round #29 (Div. 2, Codeforces format)|8|\n|<ul><li>- [ ] Done</li></ul>|470|[Scheme](http://codeforces.com/problemset/problem/22/E)|Codeforces||Codeforces Beta Round #22 (Div. 2 Only)|8|\n|<ul><li>- [ ] Done</li></ul>|471|[Interestring graph and Apples](http://codeforces.com/problemset/problem/9/E)|Codeforces||Codeforces Beta Round #9 (Div. 2 Only)|8|\n|<ul><li>- [ ] Done</li></ul>|472|[Graph basics concepts](http://www.spoj.com/problems/GRAPHS12/)|SPOJ|||8|\n|<ul><li>- [ ] Done</li></ul>|473|[Yash And Trees](http://codeforces.com/problemset/problem/633/G)|Codeforces||Manthan, Codefest 16|8|\n|<ul><li>- [ ] Done</li></ul>|474|[The Chocolate Spree](http://codeforces.com/problemset/problem/633/F)|Codeforces||Manthan, Codefest 16|8|\n|<ul><li>- [ ] Done</li></ul>|475|[Kingdom and its Cities](http://codeforces.com/problemset/problem/613/D)|Codeforces||Codeforces Round #339 (Div. 1)|8|\n|<ul><li>- [ ] Done</li></ul>|476|[Intergalaxy Trips](http://codeforces.com/problemset/problem/605/E)|Codeforces||Codeforces Round #335 (Div. 1)|8|\n|<ul><li>- [ ] Done</li></ul>|477|[Board Game](http://codeforces.com/problemset/problem/605/D)|Codeforces||Codeforces Round #335 (Div. 1)|8|\n|<ul><li>- [ ] Done</li></ul>|478|[Run for beer](http://codeforces.com/problemset/problem/575/G)|Codeforces||Bubble Cup 8 - Finals [Online Mirror]|8|\n|<ul><li>- [ ] Done</li></ul>|479|[CNF 2](http://codeforces.com/problemset/problem/571/C)|Codeforces||Codeforces Round #317 [AimFund Thanks-Round] (Div. 1) & Codeforces Round #317 [AimFund Thanks-Round] (Div. 2)|8|\n|<ul><li>- [ ] Done</li></ul>|480|[Matching Names](http://codeforces.com/problemset/problem/566/A)|Codeforces||VK Cup 2015 - Finals, online mirror|8|\n|<ul><li>- [ ] Done</li></ul>|481|[Playing on Graph](http://codeforces.com/problemset/problem/542/E)|Codeforces||VK Cup 2015 - Round 3 (unofficial online mirror, Div. 1 only)|8|\n|<ul><li>- [ ] Done</li></ul>|482|[Drazil and Morning Exercise](http://codeforces.com/problemset/problem/516/D)|Codeforces||Codeforces Round #292 (Div. 1)|8|\n|<ul><li>- [ ] Done</li></ul>|483|[Constrained Tree](http://codeforces.com/problemset/problem/513/D1)|Codeforces||Rockethon 2015|8|\n|<ul><li>- [ ] Done</li></ul>|484|[Birthday](http://codeforces.com/problemset/problem/494/D)|Codeforces||Codeforces Round #282 (Div. 1)|8|\n|<ul><li>- [ ] Done</li></ul>|485|[Tourists](http://codeforces.com/problemset/problem/487/E)|Codeforces||Codeforces Round #278 (Div. 1)|8|\n|<ul><li>- [ ] Done</li></ul>|486|[One-Based Arithmetic](http://codeforces.com/problemset/problem/440/C)|Codeforces||Testing Round #10|8|\n|<ul><li>- [ ] Done</li></ul>|487|[Choosing Subtree is Fun](http://codeforces.com/problemset/problem/372/D)|Codeforces||Codeforces Round #219 (Div. 1)|8|\n|<ul><li>- [ ] Done</li></ul>|488|[Sereja and Sets](http://codeforces.com/problemset/problem/367/D)|Codeforces||Codeforces Round #215 (Div. 1)|8|\n|<ul><li>- [ ] Done</li></ul>|489|[Petya and Pipes](http://codeforces.com/problemset/problem/362/E)|Codeforces||Codeforces Round #212 (Div. 2)|8|\n|<ul><li>- [ ] Done</li></ul>|490|[Robot Control](http://codeforces.com/problemset/problem/346/D)|Codeforces||Codeforces Round #201 (Div. 1)|8|\n|<ul><li>- [ ] Done</li></ul>|491|[Xenia and Dominoes](http://codeforces.com/problemset/problem/342/D)|Codeforces||Codeforces Round #199 (Div. 2)|8|\n|<ul><li>- [ ] Done</li></ul>|492|[Three Swaps](http://codeforces.com/problemset/problem/339/E)|Codeforces||Codeforces Round #197 (Div. 2)|8|\n|<ul><li>- [ ] Done</li></ul>|493|[Balance](http://codeforces.com/problemset/problem/317/C)|Codeforces||Codeforces Round #188 (Div. 1) & Codeforces Round #188 (Div. 2)|8|\n|<ul><li>- [ ] Done</li></ul>|494|[Polo the Penguin and Trees ](http://codeforces.com/problemset/problem/288/D)|Codeforces||Codeforces Round #177 (Div. 1)|8|\n|<ul><li>- [ ] Done</li></ul>|495|[Dominoes](http://codeforces.com/problemset/problem/267/B)|Codeforces||Codeforces Testing Round #5|8|\n|<ul><li>- [ ] Done</li></ul>|496|[BerDonalds](http://codeforces.com/problemset/problem/266/D)|Codeforces||Codeforces Round #163 (Div. 2)|8|\n|<ul><li>- [ ] Done</li></ul>|497|[Rats](http://codeforces.com/problemset/problem/254/D)|Codeforces||Codeforces Round #155 (Div. 2)|9|\n|<ul><li>- [ ] Done</li></ul>|498|[Road Repairs](http://codeforces.com/problemset/problem/240/E)|Codeforces||Codeforces Round #145 (Div. 1, ACM-ICPC Rules)|9|\n|<ul><li>- [ ] Done</li></ul>|499|[Meeting Her](http://codeforces.com/problemset/problem/238/E)|Codeforces||Codeforces Round #148 (Div. 1)|9|\n|<ul><li>- [ ] Done</li></ul>|500|[Bitonix' Patrol](http://codeforces.com/problemset/problem/217/D)|Codeforces||Codeforces Round #134 (Div. 1)|9|\n|<ul><li>- [ ] Done</li></ul>|501|[Battlefield](http://codeforces.com/problemset/problem/182/A)|Codeforces||Codeforces Round #117 (Div. 2)|9|\n|<ul><li>- [ ] Done</li></ul>|502|[BHTML+BCSS](http://codeforces.com/problemset/problem/172/E)|Codeforces||Croc Champ 2012 - Qualification Round|9|\n|<ul><li>- [ ] Done</li></ul>|503|[Cycle](http://codeforces.com/problemset/problem/135/D)|Codeforces||Codeforces Beta Round #97 (Div. 1)|9|\n|<ul><li>- [ ] Done</li></ul>|504|[Winning Strategy](http://codeforces.com/problemset/problem/97/C)|Codeforces||Yandex.Algorithm 2011 Finals|9|\n|<ul><li>- [ ] Done</li></ul>|505|[Track](http://codeforces.com/problemset/problem/83/C)|Codeforces||Codeforces Beta Round #72 (Div. 1 Only) & Codeforces Beta Round #72 (Div. 2 Only)|9|\n|<ul><li>- [ ] Done</li></ul>|506|[Evacuation](http://codeforces.com/problemset/problem/78/E)|Codeforces||Codeforces Beta Round #70 (Div. 2)|9|\n|<ul><li>- [ ] Done</li></ul>|507|[Ship's Shortest Path](http://codeforces.com/problemset/problem/75/E)|Codeforces||Codeforces Beta Round #67 (Div. 2)|9|\n|<ul><li>- [ ] Done</li></ul>|508|[Harry Potter and the Sorting Hat](http://codeforces.com/problemset/problem/65/D)|Codeforces||Codeforces Beta Round #60|9|\n|<ul><li>- [ ] Done</li></ul>|509|[Wormhouse](http://codeforces.com/problemset/problem/62/D)|Codeforces||Codeforces Beta Round #58|9|\n|<ul><li>- [ ] Done</li></ul>|510|[Caterpillar](http://codeforces.com/problemset/problem/51/F)|Codeforces||Codeforces Beta Round #48|9|\n|<ul><li>- [ ] Done</li></ul>|511|[Trial for Chief](http://codeforces.com/problemset/problem/37/E)|Codeforces||Codeforces Beta Round #37|9|\n|<ul><li>- [ ] Done</li></ul>|512|[S&#227;o Jo&#227;o](http://br.spoj.com/problems/SAOJOAO/)|SPOJ Brazil|||9|\n|<ul><li>- [ ] Done</li></ul>|513|[Clockwork Bomb](http://codeforces.com/problemset/problem/650/E)|Codeforces||Codeforces Round #345 (Div. 1)|9|\n|<ul><li>- [ ] Done</li></ul>|514|[Wilbur and Strings](http://codeforces.com/problemset/problem/596/E)|Codeforces||Codeforces Round #331 (Div. 2)|9|\n|<ul><li>- [ ] Done</li></ul>|515|[Superhero's Job](http://codeforces.com/problemset/problem/542/D)|Codeforces||VK Cup 2015 - Round 3 (unofficial online mirror, Div. 1 only)|9|\n|<ul><li>- [ ] Done</li></ul>|516|[Cycling City](http://codeforces.com/problemset/problem/521/E)|Codeforces||Codeforces Round #295 (Div. 1)|9|\n|<ul><li>- [ ] Done</li></ul>|517|[Strongly Connected City 2](http://codeforces.com/problemset/problem/475/E)|Codeforces||Bayan 2015 Contest Warm Up|9|\n|<ul><li>- [ ] Done</li></ul>|518|[The Classic Problem](http://codeforces.com/problemset/problem/464/E)|Codeforces||Codeforces Round #265 (Div. 1)|9|\n|<ul><li>- [ ] Done</li></ul>|519|[Game with Points](http://codeforces.com/problemset/problem/386/D)|Codeforces||Testing Round #9|9|\n|<ul><li>- [ ] Done</li></ul>|520|[Circling Round Treasures](http://codeforces.com/problemset/problem/375/C)|Codeforces||Codeforces Round #221 (Div. 1) & Codeforces Round #221 (Div. 2)|9|\n|<ul><li>- [ ] Done</li></ul>|521|[Levko and Game](http://codeforces.com/problemset/problem/360/E)|Codeforces||Codeforces Round #210 (Div. 1)|9|\n|<ul><li>- [ ] Done</li></ul>|522|[Neatness](http://codeforces.com/problemset/problem/359/E)|Codeforces||Codeforces Round #209 (Div. 2)|9|\n|<ul><li>- [ ] Done</li></ul>|523|[Pilgrims](http://codeforces.com/problemset/problem/348/E)|Codeforces||Codeforces Round #202 (Div. 1)|9|\n|<ul><li>- [ ] Done</li></ul>|524|[Pumping Stations](http://codeforces.com/problemset/problem/343/E)|Codeforces||Codeforces Round #200 (Div. 1)|9|\n|<ul><li>- [ ] Done</li></ul>|525|[The Red Button](http://codeforces.com/problemset/problem/325/E)|Codeforces||MemSQL start[c]up Round 1|9|\n|<ul><li>- [ ] Done</li></ul>|526|[Monsters and Diamonds](http://codeforces.com/problemset/problem/325/C)|Codeforces||MemSQL start[c]up Round 1|9|\n|<ul><li>- [ ] Done</li></ul>|527|[Fetch the Treasure](http://codeforces.com/problemset/problem/311/C)|Codeforces||Codeforces Round #185 (Div. 1) & Codeforces Round #185 (Div. 2)|9|\n|<ul><li>- [ ] Done</li></ul>|528|[Maze](http://codeforces.com/problemset/problem/123/E)|Codeforces||Codeforces Beta Round #92 (Div. 1 Only)|9|\n|<ul><li>- [ ] Done</li></ul>|529|[Pairs](http://codeforces.com/problemset/problem/81/E)|Codeforces||Yandex.Algorithm Open 2011 Qualification 1|9|\n|<ul><li>- [ ] Done</li></ul>|530|[Bear and Chase](http://codeforces.com/problemset/problem/679/D)|Codeforces||Codeforces Round #356 (Div. 1)|9|\n|<ul><li>- [ ] Done</li></ul>|531|[Simplifying the Farm](http://www.spoj.com/problems/HKRUSKAL/)|SPOJ|||9|\n|<ul><li>- [ ] Done</li></ul>|532|[Arkady and a Nobody-men](http://codeforces.com/problemset/problem/860/E)|Codeforces||Codeforces Round #434 (Div. 1, based on Technocup 2018 Elimination Round 1)|9|\n|<ul><li>- [ ] Done</li></ul>|533|[Sagheer and Kindergarten](http://codeforces.com/problemset/problem/812/D)|Codeforces||Codeforces Round #417 (Div. 2)|9|\n|<ul><li>- [ ] Done</li></ul>|534|[DFS](http://codeforces.com/problemset/problem/1044/F)|Codeforces||Lyft Level 5 Challenge 2018 - Final Round|9|\n|<ul><li>- [ ] Done</li></ul>|535|[Tree and Table](http://codeforces.com/problemset/problem/251/E)|Codeforces||Codeforces Round #153 (Div. 1)|10|\n|<ul><li>- [ ] Done</li></ul>|536|[Doe Graphs](http://codeforces.com/problemset/problem/232/C)|Codeforces||Codeforces Round #144 (Div. 1) & Codeforces Round #144 (Div. 2)|10|\n|<ul><li>- [ ] Done</li></ul>|537|[Gnomes of Might and Magic](http://codeforces.com/problemset/problem/175/F)|Codeforces||Codeforces Round #115|10|\n|<ul><li>- [ ] Done</li></ul>|538|[Battleship](http://codeforces.com/problemset/problem/100/H)|Codeforces||Unknown Language Round #3|10|\n|<ul><li>- [ ] Done</li></ul>|539|[Leaders](http://codeforces.com/problemset/problem/97/E)|Codeforces||Yandex.Algorithm 2011 Finals|10|\n|<ul><li>- [ ] Done</li></ul>|540|[Harry Potter and Moving Staircases](http://codeforces.com/problemset/problem/65/E)|Codeforces||Codeforces Beta Round #60|10|\n|<ul><li>- [ ] Done</li></ul>|541|[Chess](http://codeforces.com/problemset/problem/57/E)|Codeforces||Codeforces Beta Round #53|10|\n|<ul><li>- [ ] Done</li></ul>|542|[Baldman and the military](http://codeforces.com/problemset/problem/42/E)|Codeforces||Codeforces Beta Round #41|10|\n|<ul><li>- [ ] Done</li></ul>|543|[Bear and Chemistry](http://codeforces.com/problemset/problem/639/F)|Codeforces||VK Cup 2016 - Round 1|10|\n|<ul><li>- [ ] Done</li></ul>|544|[Island Puzzle](http://codeforces.com/problemset/problem/627/F)|Codeforces||8VC Venture Cup 2016 - Final Round|10|\n|<ul><li>- [ ] Done</li></ul>|545|[Taxi in Berland](http://codeforces.com/problemset/problem/589/M)|Codeforces||2015-2016 ACM-ICPC, NEERC, Southern Subregional Contest (Online Mirror, ACM-ICPC Rules, Teams Preferred)|10|\n|<ul><li>- [ ] Done</li></ul>|546|[Logistical Questions](http://codeforces.com/problemset/problem/566/C)|Codeforces||VK Cup 2015 - Finals, online mirror|10|\n|<ul><li>- [ ] Done</li></ul>|547|[Summer Dichotomy](http://codeforces.com/problemset/problem/538/H)|Codeforces||Codeforces Round #300|10|\n|<ul><li>- [ ] Done</li></ul>|548|[Berland Miners](http://codeforces.com/problemset/problem/533/A)|Codeforces||VK Cup 2015 - Round 2 (unofficial online mirror, Div. 1 only)|10|\n|<ul><li>- [ ] Done</li></ul>|549|[Misha and LCP on Tree](http://codeforces.com/problemset/problem/504/E)|Codeforces||Codeforces Round #285 (Div. 1)|10|\n|<ul><li>- [ ] Done</li></ul>|550|[Wavy numbers](http://codeforces.com/problemset/problem/478/E)|Codeforces||Codeforces Round #273 (Div. 2)|10|\n|<ul><li>- [ ] Done</li></ul>|551|[Appleman and a Game](http://codeforces.com/problemset/problem/461/E)|Codeforces||Codeforces Round #263 (Div. 1)|10|\n|<ul><li>- [ ] Done</li></ul>|552|[Colored Jenga](http://codeforces.com/problemset/problem/424/E)|Codeforces||Codeforces Round #242 (Div. 2)|10|\n|<ul><li>- [ ] Done</li></ul>|553|[Chain Letter](http://codeforces.com/problemset/problem/345/D)|Codeforces||Friday the 13th, Programmers Day|10|\n|<ul><li>- [ ] Done</li></ul>|554|[Escaping on Beaveractor](http://codeforces.com/problemset/problem/331/D1)|Codeforces||ABBYY Cup 3.0 - Finals (online version)|10|\n|<ul><li>- [ ] Done</li></ul>|555|[Princess and Her Shadow](http://codeforces.com/problemset/problem/317/E)|Codeforces||Codeforces Round #188 (Div. 1)|10|\n|<ul><li>- [ ] Done</li></ul>|556|[Suns and Rays](http://codeforces.com/problemset/problem/316/F3)|Codeforces||ABBYY Cup 3.0|10|\n|<ul><li>- [ ] Done</li></ul>|557|[Suns and Rays](http://codeforces.com/problemset/problem/316/F1)|Codeforces||ABBYY Cup 3.0|10|\n|<ul><li>- [ ] Done</li></ul>|558|[Greedy Petya](http://codeforces.com/problemset/problem/290/F)|Codeforces||April Fools Day Contest 2013|10|\n|<ul><li>- [ ] Done</li></ul>|559|[Dynamic Programming](p?ID=410)|A2 Online Judge|||10|\n|<ul><li>- [ ] Done</li></ul>|560|[#dynamic-programming&nbsp;(168)</span>](http://www.spoj.com/problems/tag/)|SPOJ|||10|\n|<ul><li>- [ ] Done</li></ul>|561|[Longest Maze Path](http://www.spoj.com/problems/EPIC1305/)|SPOJ|||10|\n|<ul><li>- [ ] Done</li></ul>|562|[Sloth](http://codeforces.com/problemset/problem/891/D)|Codeforces||Codeforces Round #446 (Div. 1)|10|\n|<ul><li>- [ ] Done</li></ul>|563|[Rap God](http://codeforces.com/problemset/problem/786/D)|Codeforces||Codeforces Round #406 (Div. 1)|10|\n|<ul><li>- [ ] Done</li></ul>|564|[Nikita and game](http://codeforces.com/problemset/problem/842/E)|Codeforces||Codeforces Round #430 (Div. 2)|10|\n|<ul><li>- [ ] Done</li></ul>|565|[The Overdosing Ubiquity](http://codeforces.com/problemset/problem/869/D)|Codeforces||Codeforces Round #439 (Div. 2)|10|\n"
  },
  {
    "path": "categories/006. brute_force/README.md",
    "content": "# 006. brute_force\n\n\n| Checkbox | ID | Problem Name|Online Judge|Year|Contest|Difficulty Level|\n|:---:|:---:|:---:|:---:|:---:|:---:|:---:|\n|<ul><li>- [ ] Done</li></ul>|1|[Team](http://codeforces.com/problemset/problem/231/A)|Codeforces||Codeforces Round #143 (Div. 2)|1|\n|<ul><li>- [ ] Done</li></ul>|2|[System of Equations](http://codeforces.com/problemset/problem/214/A)|Codeforces||Codeforces Round #131 (Div. 2)|1|\n|<ul><li>- [ ] Done</li></ul>|3|[Hexadecimal's theorem](http://codeforces.com/problemset/problem/199/A)|Codeforces||Codeforces Round #125 (Div. 2)|1|\n|<ul><li>- [ ] Done</li></ul>|4|[Cut Ribbon](http://codeforces.com/problemset/problem/189/A)|Codeforces||Codeforces Round #119 (Div. 2)|1|\n|<ul><li>- [ ] Done</li></ul>|5|[I_love_\\%username\\%](http://codeforces.com/problemset/problem/155/A)|Codeforces||Codeforces Round #109 (Div. 2)|1|\n|<ul><li>- [ ] Done</li></ul>|6|[Lucky Division](http://codeforces.com/problemset/problem/122/A)|Codeforces||Codeforces Beta Round #91 (Div. 2 Only)|1|\n|<ul><li>- [ ] Done</li></ul>|7|[Lucky Sum of Digits](http://codeforces.com/problemset/problem/109/A)|Codeforces||Codeforces Beta Round #84 (Div. 1 Only) & Codeforces Beta Round #84 (Div. 2 Only)|1|\n|<ul><li>- [ ] Done</li></ul>|8|[IQ test](http://codeforces.com/problemset/problem/25/A)|Codeforces||Codeforces Beta Round #25 (Div. 2 Only)|1|\n|<ul><li>- [ ] Done</li></ul>|9|[Triangle](http://codeforces.com/problemset/problem/6/A)|Codeforces||Codeforces Beta Round #6 (Div. 2 Only)|1|\n|<ul><li>- [ ] Done</li></ul>|10|[Candy](http://www.spoj.com/problems/SAMER08C/)|SPOJ|||1|\n|<ul><li>- [ ] Done</li></ul>|11|[Candy I](http://www.spoj.com/problems/CANDY/)|SPOJ|||1|\n|<ul><li>- [ ] Done</li></ul>|12|[Grouping Problem](http://acm.tju.edu.cn/toj/showp2821.html)|TJU|||1|\n|<ul><li>- [ ] Done</li></ul>|13|[Play with Dates](http://www.spoj.com/problems/CODEIT03/)|SPOJ|||1|\n|<ul><li>- [ ] Done</li></ul>|14|[Pangram](http://codeforces.com/problemset/problem/520/A)|Codeforces||Codeforces Round #295 (Div. 2)|1|\n|<ul><li>- [ ] Done</li></ul>|15|[Burger Time?](https://uva.onlinejudge.org/index.php?option=onlinejudge&page=show_problem&problem=2708)|UVA|||1|\n|<ul><li>- [ ] Done</li></ul>|16|[Amr and Pins](http://codeforces.com/problemset/problem/507/B)|Codeforces||Codeforces Round #287 (Div. 2)|1|\n|<ul><li>- [ ] Done</li></ul>|17|[Far Relative’s Birthday Cake](http://codeforces.com/problemset/problem/629/A)|Codeforces||Codeforces Round #343 (Div. 2)|1|\n|<ul><li>- [ ] Done</li></ul>|18|[Kefa and First Steps](http://codeforces.com/problemset/problem/580/A)|Codeforces||Codeforces Round #321 (Div. 2)|1|\n|<ul><li>- [ ] Done</li></ul>|19|[Gerald's Hexagon](http://codeforces.com/problemset/problem/559/A)|Codeforces||Codeforces Round #313 (Div. 1) & Codeforces Round #313 (Div. 2)|1|\n|<ul><li>- [ ] Done</li></ul>|20|[Lala Land and Apple Trees](http://codeforces.com/problemset/problem/558/A)|Codeforces||Codeforces Round #312 (Div. 2)|1|\n|<ul><li>- [ ] Done</li></ul>|21|[Kyoya and Photobooks](http://codeforces.com/problemset/problem/554/A)|Codeforces||Codeforces Round #309 (Div. 2)|1|\n|<ul><li>- [ ] Done</li></ul>|22|[Divisibility by Eight](http://codeforces.com/problemset/problem/550/C)|Codeforces||Codeforces Round #306 (Div. 2)|1|\n|<ul><li>- [ ] Done</li></ul>|23|[Preparing Olympiad](http://codeforces.com/problemset/problem/550/B)|Codeforces||Codeforces Round #306 (Div. 2)|1|\n|<ul><li>- [ ] Done</li></ul>|24|[Two Substrings](http://codeforces.com/problemset/problem/550/A)|Codeforces||Codeforces Round #306 (Div. 2)|1|\n|<ul><li>- [ ] Done</li></ul>|25|[Mike and Fax](http://codeforces.com/problemset/problem/548/A)|Codeforces||Codeforces Round #305 (Div. 2)|1|\n|<ul><li>- [ ] Done</li></ul>|26|[Soldier and Cards](http://codeforces.com/problemset/problem/546/C)|Codeforces||Codeforces Round #304 (Div. 2)|1|\n|<ul><li>- [ ] Done</li></ul>|27|[Soldier and Badges](http://codeforces.com/problemset/problem/546/B)|Codeforces||Codeforces Round #304 (Div. 2)|1|\n|<ul><li>- [ ] Done</li></ul>|28|[Tavas and SaDDas](http://codeforces.com/problemset/problem/535/B)|Codeforces||Codeforces Round #299 (Div. 2)|1|\n|<ul><li>- [ ] Done</li></ul>|29|[Han Solo and Lazer Gun](http://codeforces.com/problemset/problem/514/B)|Codeforces||Codeforces Round #291 (Div. 2)|1|\n|<ul><li>- [ ] Done</li></ul>|30|[Maximum in Table](http://codeforces.com/problemset/problem/509/A)|Codeforces||Codeforces Round #289 (Div. 2, ACM ICPC Rules)|1|\n|<ul><li>- [ ] Done</li></ul>|31|[Minimum Difficulty](http://codeforces.com/problemset/problem/496/A)|Codeforces||Codeforces Round #283 (Div. 2)|1|\n|<ul><li>- [ ] Done</li></ul>|32|[Giga Tower](http://codeforces.com/problemset/problem/488/A)|Codeforces||Codeforces Round #278 (Div. 2)|1|\n|<ul><li>- [ ] Done</li></ul>|33|[Counterexample ](http://codeforces.com/problemset/problem/483/A)|Codeforces||Codeforces Round #275 (Div. 2)|1|\n|<ul><li>- [ ] Done</li></ul>|34|[Expression](http://codeforces.com/problemset/problem/479/A)|Codeforces||Codeforces Round #274 (Div. 2)|1|\n|<ul><li>- [ ] Done</li></ul>|35|[Dreamoon and WiFi](http://codeforces.com/problemset/problem/476/B)|Codeforces||Codeforces Round #272 (Div. 2)|1|\n|<ul><li>- [ ] Done</li></ul>|36|[Fedor and New Game](http://codeforces.com/problemset/problem/467/B)|Codeforces||Codeforces Round #267 (Div. 2)|1|\n|<ul><li>- [ ] Done</li></ul>|37|[Number of Ways](http://codeforces.com/problemset/problem/466/C)|Codeforces||Codeforces Round #266 (Div. 2)|1|\n|<ul><li>- [ ] Done</li></ul>|38|[Appleman and Easy Task](http://codeforces.com/problemset/problem/462/A)|Codeforces||Codeforces Round #263 (Div. 2)|1|\n|<ul><li>- [ ] Done</li></ul>|39|[Vasya and Socks](http://codeforces.com/problemset/problem/460/A)|Codeforces||Codeforces Round #262 (Div. 2)|1|\n|<ul><li>- [ ] Done</li></ul>|40|[Bear and Raspberry](http://codeforces.com/problemset/problem/385/A)|Codeforces||Codeforces Round #226 (Div. 2)|1|\n|<ul><li>- [ ] Done</li></ul>|41|[Playing with Dice](http://codeforces.com/problemset/problem/378/A)|Codeforces||Codeforces Round #222 (Div. 2)|1|\n|<ul><li>- [ ] Done</li></ul>|42|[Fence](http://codeforces.com/problemset/problem/363/B)|Codeforces||Codeforces Round #211 (Div. 2)|1|\n|<ul><li>- [ ] Done</li></ul>|43|[Jeff and Digits](http://codeforces.com/problemset/problem/352/A)|Codeforces||Codeforces Round #204 (Div. 2)|1|\n|<ul><li>- [ ] Done</li></ul>|44|[TL](http://codeforces.com/problemset/problem/350/A)|Codeforces||Codeforces Round #203 (Div. 2)|1|\n|<ul><li>- [ ] Done</li></ul>|45|[Cakeminator](http://codeforces.com/problemset/problem/330/A)|Codeforces||Codeforces Round #192 (Div. 2)|1|\n|<ul><li>- [ ] Done</li></ul>|46|[Flipping Game](http://codeforces.com/problemset/problem/327/A)|Codeforces||Codeforces Round #191 (Div. 2)|1|\n|<ul><li>- [ ] Done</li></ul>|47|[Magic Numbers](http://codeforces.com/problemset/problem/320/A)|Codeforces||Codeforces Round #189 (Div. 2)|1|\n|<ul><li>- [ ] Done</li></ul>|48|[Array](http://codeforces.com/problemset/problem/300/A)|Codeforces||Codeforces Round #181 (Div. 2)|1|\n|<ul><li>- [ ] Done</li></ul>|49|[Books](http://codeforces.com/problemset/problem/279/B)|Codeforces||Codeforces Round #171 (Div. 2)|1|\n|<ul><li>- [ ] Done</li></ul>|50|[Beautiful Year](http://codeforces.com/problemset/problem/271/A)|Codeforces||Codeforces Round #166 (Div. 2)|1|\n|<ul><li>- [ ] Done</li></ul>|51|[Games](http://codeforces.com/problemset/problem/268/A)|Codeforces||Codeforces Round #164 (Div. 2)|1|\n|<ul><li>- [ ] Done</li></ul>|52|[Parallelepiped](http://codeforces.com/problemset/problem/224/A)|Codeforces||Codeforces Round #138 (Div. 2)|1|\n|<ul><li>- [ ] Done</li></ul>|53|[Ice Skating](http://codeforces.com/problemset/problem/217/A)|Codeforces||Codeforces Round #134 (Div. 1) & Codeforces Round #134 (Div. 2)|1|\n|<ul><li>- [ ] Done</li></ul>|54|[Panoramix's Prediction](http://codeforces.com/problemset/problem/80/A)|Codeforces||Codeforces Beta Round #69 (Div. 2 Only)|1|\n|<ul><li>- [ ] Done</li></ul>|55|[Watermelon](http://codeforces.com/problemset/problem/4/A)|Codeforces||Codeforces Beta Round #4 (Div. 2 Only)|1|\n|<ul><li>- [ ] Done</li></ul>|56|[Bus to Udayland](http://codeforces.com/problemset/problem/711/A)|Codeforces||Codeforces Round #369 (Div. 2)|1|\n|<ul><li>- [ ] Done</li></ul>|57|[Taymyr is calling you](http://codeforces.com/problemset/problem/764/A)|Codeforces||Codeforces Round #395 (Div. 2)|1|\n|<ul><li>- [ ] Done</li></ul>|58|[Fraction](http://codeforces.com/problemset/problem/854/A)|Codeforces||Codeforces Round #433 (Div. 2, based on Olympiad of Metropolises)|1|\n|<ul><li>- [ ] Done</li></ul>|59|[QAQ](http://codeforces.com/problemset/problem/894/A)|Codeforces||Codeforces Round #447 (Div. 2)|1|\n|<ul><li>- [ ] Done</li></ul>|60|[Vladik and Courtesy](http://codeforces.com/problemset/problem/811/A)|Codeforces||Codeforces Round #416 (Div. 2)|1|\n|<ul><li>- [ ] Done</li></ul>|61|[Generous Kefa](http://codeforces.com/problemset/problem/841/A)|Codeforces||Codeforces Round #429 (Div. 2)|1|\n|<ul><li>- [ ] Done</li></ul>|62|[Mike and palindrome](http://codeforces.com/problemset/problem/798/A)|Codeforces||Codeforces Round #410 (Div. 2)|1|\n|<ul><li>- [ ] Done</li></ul>|63|[Beru-taxi](http://codeforces.com/problemset/problem/706/A)|Codeforces||Codeforces Round #367 (Div. 2)|1|\n|<ul><li>- [ ] Done</li></ul>|64|[Karen and Morning](http://codeforces.com/problemset/problem/816/A)|Codeforces||Codeforces Round #419 (Div. 2)|1|\n|<ul><li>- [ ] Done</li></ul>|65|[The Artful Expedient](http://codeforces.com/problemset/problem/869/A)|Codeforces||Codeforces Round #439 (Div. 2)|1|\n|<ul><li>- [ ] Done</li></ul>|66|[The Monster](http://codeforces.com/problemset/problem/787/A)|Codeforces||Codeforces Round #406 (Div. 2)|1|\n|<ul><li>- [ ] Done</li></ul>|67|[Arpa’s hard exam and Mehrdad’s naive cheat](http://codeforces.com/problemset/problem/742/A)|Codeforces||Codeforces Round #383 (Div. 2)|1|\n|<ul><li>- [ ] Done</li></ul>|68|[Little Elephant and Magic Square](http://codeforces.com/problemset/problem/259/B)|Codeforces||Codeforces Round #157 (Div. 2)|2|\n|<ul><li>- [ ] Done</li></ul>|69|[Shooshuns and Sequence ](http://codeforces.com/problemset/problem/222/A)|Codeforces||Codeforces Round #137 (Div. 2)|2|\n|<ul><li>- [ ] Done</li></ul>|70|[Bicycle Chain](http://codeforces.com/problemset/problem/215/A)|Codeforces||Codeforces Round #132 (Div. 2)|2|\n|<ul><li>- [ ] Done</li></ul>|71|[Prizes, Prizes, more Prizes](http://codeforces.com/problemset/problem/208/D)|Codeforces||Codeforces Round #130 (Div. 2)|2|\n|<ul><li>- [ ] Done</li></ul>|72|[Little Elephant and Rozdil](http://codeforces.com/problemset/problem/205/A)|Codeforces||Codeforces Round #129 (Div. 2)|2|\n|<ul><li>- [ ] Done</li></ul>|73|[Ice Sculptures](http://codeforces.com/problemset/problem/158/D)|Codeforces||VK Cup 2012 Qualification Round 1|2|\n|<ul><li>- [ ] Done</li></ul>|74|[Game Outcome](http://codeforces.com/problemset/problem/157/A)|Codeforces||Codeforces Round #110 (Div. 2)|2|\n|<ul><li>- [ ] Done</li></ul>|75|[Help Vasilisa the Wise 2](http://codeforces.com/problemset/problem/143/A)|Codeforces||Codeforces Round #102 (Div. 2)|2|\n|<ul><li>- [ ] Done</li></ul>|76|[Lucky Substring](http://codeforces.com/problemset/problem/122/B)|Codeforces||Codeforces Beta Round #91 (Div. 2 Only)|2|\n|<ul><li>- [ ] Done</li></ul>|77|[Lucky Numbers (easy)](http://codeforces.com/problemset/problem/96/B)|Codeforces||Codeforces Beta Round #77 (Div. 2 Only)|2|\n|<ul><li>- [ ] Done</li></ul>|78|[Petya and Countryside](http://codeforces.com/problemset/problem/66/B)|Codeforces||Codeforces Beta Round #61 (Div. 2)|2|\n|<ul><li>- [ ] Done</li></ul>|79|[Triangular numbers](http://codeforces.com/problemset/problem/47/A)|Codeforces||Codeforces Beta Round #44 (Div. 2)|2|\n|<ul><li>- [ ] Done</li></ul>|80|[Second Order Statistics](http://codeforces.com/problemset/problem/22/A)|Codeforces||Codeforces Beta Round #22 (Div. 2 Only)|2|\n|<ul><li>- [ ] Done</li></ul>|81|[Hexadecimal's Numbers](http://codeforces.com/problemset/problem/9/C)|Codeforces||Codeforces Beta Round #9 (Div. 2 Only)|2|\n|<ul><li>- [ ] Done</li></ul>|82|[GRADE POINT AVERAGE](http://www.spoj.com/problems/GPA1/)|SPOJ|||2|\n|<ul><li>- [ ] Done</li></ul>|83|[Dima and Continuous Line](http://codeforces.com/problemset/problem/358/A)|Codeforces||Codeforces Round #208 (Div. 2)|2|\n|<ul><li>- [ ] Done</li></ul>|84|[Bear and Three Balls](http://codeforces.com/problemset/problem/653/A)|Codeforces||IndiaHacks 2016 - Online Edition (Div. 1 + Div. 2)|2|\n|<ul><li>- [ ] Done</li></ul>|85|[Ebony and Ivory](http://codeforces.com/problemset/problem/633/A)|Codeforces||Manthan, Codefest 16|2|\n|<ul><li>- [ ] Done</li></ul>|86|[Interview](http://codeforces.com/problemset/problem/631/A)|Codeforces||Codeforces Round #344 (Div. 2)|2|\n|<ul><li>- [ ] Done</li></ul>|87|[Far Relative’s Problem](http://codeforces.com/problemset/problem/629/B)|Codeforces||Codeforces Round #343 (Div. 2)|2|\n|<ul><li>- [ ] Done</li></ul>|88|[Robot Sequence](http://codeforces.com/problemset/problem/626/A)|Codeforces||8VC Venture Cup 2016 - Elimination Round|2|\n|<ul><li>- [ ] Done</li></ul>|89|[Link/Cut Tree](http://codeforces.com/problemset/problem/614/A)|Codeforces||Codeforces Round #339 (Div. 2)|2|\n|<ul><li>- [ ] Done</li></ul>|90|[New Year and Old Property](http://codeforces.com/problemset/problem/611/B)|Codeforces||Good Bye 2015|2|\n|<ul><li>- [ ] Done</li></ul>|91|[2Char](http://codeforces.com/problemset/problem/593/A)|Codeforces||Codeforces Round #329 (Div. 2)|2|\n|<ul><li>- [ ] Done</li></ul>|92|[Bear and Three Musketeers](http://codeforces.com/problemset/problem/574/B)|Codeforces||Codeforces Round #318 [RussianCodeCup Thanks-Round] (Div. 2)|2|\n|<ul><li>- [ ] Done</li></ul>|93|[Case of Fake Numbers](http://codeforces.com/problemset/problem/556/B)|Codeforces||Codeforces Round #310 (Div. 2)|2|\n|<ul><li>- [ ] Done</li></ul>|94|[Ohana Cleans Up](http://codeforces.com/problemset/problem/554/B)|Codeforces||Codeforces Round #309 (Div. 2)|2|\n|<ul><li>- [ ] Done</li></ul>|95|[Mike and Fun](http://codeforces.com/problemset/problem/548/B)|Codeforces||Codeforces Round #305 (Div. 2)|2|\n|<ul><li>- [ ] Done</li></ul>|96|[Tourist's Notes](http://codeforces.com/problemset/problem/538/C)|Codeforces||Codeforces Round #300|2|\n|<ul><li>- [ ] Done</li></ul>|97|[Cutting Banner](http://codeforces.com/problemset/problem/538/A)|Codeforces||Codeforces Round #300|2|\n|<ul><li>- [ ] Done</li></ul>|98|[Drazil and His Happy Friends](http://codeforces.com/problemset/problem/515/B)|Codeforces||Codeforces Round #292 (Div. 1) & Codeforces Round #292 (Div. 2) & Codeforces Round #292 (Div. 1) & Codeforces Round #292 (Div. 2)|2|\n|<ul><li>- [ ] Done</li></ul>|99|[Pasha and Pixels](http://codeforces.com/problemset/problem/508/A)|Codeforces||Codeforces Round #288 (Div. 2)|2|\n|<ul><li>- [ ] Done</li></ul>|100|[Mr. Kitayuta's Gift](http://codeforces.com/problemset/problem/505/A)|Codeforces||Codeforces Round #286 (Div. 1) & Codeforces Round #286 (Div. 2) & Codeforces Round #286 (Div. 1) & Codeforces Round #286 (Div. 2)|2|\n|<ul><li>- [ ] Done</li></ul>|101|[Removing Columns](http://codeforces.com/problemset/problem/496/C)|Codeforces||Codeforces Round #283 (Div. 2) & Codeforces Round #283 (Div. 1)|2|\n|<ul><li>- [ ] Done</li></ul>|102|[Hacking Cypher](http://codeforces.com/problemset/problem/490/C)|Codeforces||Codeforces Round #279 (Div. 2)|2|\n|<ul><li>- [ ] Done</li></ul>|103|[Valuable Resources](http://codeforces.com/problemset/problem/485/B)|Codeforces||Codeforces Round #276 (Div. 2)|2|\n|<ul><li>- [ ] Done</li></ul>|104|[Towers](http://codeforces.com/problemset/problem/479/B)|Codeforces||Codeforces Round #274 (Div. 2)|2|\n|<ul><li>- [ ] Done</li></ul>|105|[Strongly Connected City](http://codeforces.com/problemset/problem/475/B)|Codeforces||Bayan 2015 Contest Warm Up|2|\n|<ul><li>- [ ] Done</li></ul>|106|[Little Dima and Equation](http://codeforces.com/problemset/problem/460/B)|Codeforces||Codeforces Round #262 (Div. 2)|2|\n|<ul><li>- [ ] Done</li></ul>|107|[Multiplication Table](http://codeforces.com/problemset/problem/448/D)|Codeforces||Codeforces Round #256 (Div. 2)|2|\n|<ul><li>- [ ] Done</li></ul>|108|[Kitahara Haruki's Gift](http://codeforces.com/problemset/problem/433/A)|Codeforces||Codeforces Round #248 (Div. 2)|2|\n|<ul><li>- [ ] Done</li></ul>|109|[Football Kit](http://codeforces.com/problemset/problem/432/B)|Codeforces||Codeforces Round #246 (Div. 2)|2|\n|<ul><li>- [ ] Done</li></ul>|110|[Shower Line](http://codeforces.com/problemset/problem/431/B)|Codeforces||Codeforces Round #247 (Div. 2)|2|\n|<ul><li>- [ ] Done</li></ul>|111|[George and Round](http://codeforces.com/problemset/problem/387/B)|Codeforces||Codeforces Round #227 (Div. 2)|2|\n|<ul><li>- [ ] Done</li></ul>|112|[Bear and Strings](http://codeforces.com/problemset/problem/385/B)|Codeforces||Codeforces Round #226 (Div. 2)|2|\n|<ul><li>- [ ] Done</li></ul>|113|[Hamburgers](http://codeforces.com/problemset/problem/371/C)|Codeforces||Codeforces Round #218 (Div. 2)|2|\n|<ul><li>- [ ] Done</li></ul>|114|[Group of Students](http://codeforces.com/problemset/problem/357/A)|Codeforces||Codeforces Round #207 (Div. 2)|2|\n|<ul><li>- [ ] Done</li></ul>|115|[Simple Molecules](http://codeforces.com/problemset/problem/344/B)|Codeforces||Codeforces Round #200 (Div. 2)|2|\n|<ul><li>- [ ] Done</li></ul>|116|[Sail](http://codeforces.com/problemset/problem/298/B)|Codeforces||Codeforces Round #180 (Div. 2)|2|\n|<ul><li>- [ ] Done</li></ul>|117|[Polo the Penguin and Matrix](http://codeforces.com/problemset/problem/289/B)|Codeforces||Codeforces Round #177 (Div. 2)|2|\n|<ul><li>- [ ] Done</li></ul>|118|[IQ Test](http://codeforces.com/problemset/problem/287/A)|Codeforces||Codeforces Round #176 (Div. 2)|2|\n|<ul><li>- [ ] Done</li></ul>|119|[Prime Matrix](http://codeforces.com/problemset/problem/271/B)|Codeforces||Codeforces Round #166 (Div. 2)|2|\n|<ul><li>- [ ] Done</li></ul>|120|[Little Elephant and Chess](http://codeforces.com/problemset/problem/259/A)|Codeforces||Codeforces Round #157 (Div. 2)|2|\n|<ul><li>- [ ] Done</li></ul>|121|[Another Problem on Strings](http://codeforces.com/problemset/problem/165/C)|Codeforces||Codeforces Round #112 (Div. 2)|2|\n|<ul><li>- [ ] Done</li></ul>|122|[Mr. Kitayuta's Colorful Graph](http://codeforces.com/problemset/problem/506/D)|Codeforces||Codeforces Round #286 (Div. 1) & Codeforces Round #286 (Div. 2) & Codeforces Round #286 (Div. 1) & Codeforces Round #286 (Div. 2)|2|\n|<ul><li>- [ ] Done</li></ul>|123|[Economy Game](http://codeforces.com/problemset/problem/681/B)|Codeforces||Codeforces Round #357 (Div. 2)|2|\n|<ul><li>- [ ] Done</li></ul>|124|[Restoring Painting](http://codeforces.com/problemset/problem/675/B)|Codeforces||Codeforces Round #353 (Div. 2)|2|\n|<ul><li>- [ ] Done</li></ul>|125|[Thor](http://codeforces.com/problemset/problem/704/A)|Codeforces||Codeforces Round #366 (Div. 1) & Codeforces Round #366 (Div. 2)|2|\n|<ul><li>- [ ] Done</li></ul>|126|[Pride](http://codeforces.com/problemset/problem/891/A)|Codeforces||Codeforces Round #446 (Div. 1) & Codeforces Round #446 (Div. 2)|2|\n|<ul><li>- [ ] Done</li></ul>|127|[Mr. Kitayuta's Colorful Graph](http://codeforces.com/problemset/problem/505/B)|Codeforces||Codeforces Round #286 (Div. 1) & Codeforces Round #286 (Div. 2) & Codeforces Round #286 (Div. 1) & Codeforces Round #286 (Div. 2)|2|\n|<ul><li>- [ ] Done</li></ul>|128|[Vicious Keyboard](http://codeforces.com/problemset/problem/801/A)|Codeforces||Codeforces Round #409 (rated, Div. 2, based on VK Cup 2017 Round 2)|2|\n|<ul><li>- [ ] Done</li></ul>|129|[Ilya and tic-tac-toe game](http://codeforces.com/problemset/problem/754/B)|Codeforces||Codeforces Round #390 (Div. 2)|2|\n|<ul><li>- [ ] Done</li></ul>|130|[Parallelogram is Back](http://codeforces.com/problemset/problem/749/B)|Codeforces||Codeforces Round #388 (Div. 2)|2|\n|<ul><li>- [ ] Done</li></ul>|131|[Alyona and copybooks](http://codeforces.com/problemset/problem/740/A)|Codeforces||Codeforces Round #381 (Div. 2)|2|\n|<ul><li>- [ ] Done</li></ul>|132|[Okabe and Banana Trees](http://codeforces.com/problemset/problem/821/B)|Codeforces||Codeforces Round #420 (Div. 2)|2|\n|<ul><li>- [ ] Done</li></ul>|133|[Chtholly's request](http://codeforces.com/problemset/problem/897/B)|Codeforces||Codeforces Round #449 (Div. 2)|2|\n|<ul><li>- [ ] Done</li></ul>|134|[Pizza Separation](http://codeforces.com/problemset/problem/895/A)|Codeforces||Codeforces Round #448 (Div. 2)|2|\n|<ul><li>- [ ] Done</li></ul>|135|[Kirill And The Game](http://codeforces.com/problemset/problem/842/A)|Codeforces||Codeforces Round #430 (Div. 2)|2|\n|<ul><li>- [ ] Done</li></ul>|136|[Mike and strings](http://codeforces.com/problemset/problem/798/B)|Codeforces||Codeforces Round #410 (Div. 2)|2|\n|<ul><li>- [ ] Done</li></ul>|137|[Vladik and fractions](http://codeforces.com/problemset/problem/743/C)|Codeforces||Codeforces Round #384 (Div. 2)|2|\n|<ul><li>- [ ] Done</li></ul>|138|[Letters](http://codeforces.com/problemset/problem/978/C)|Codeforces||Codeforces Round #481 (Div. 3)|2|\n|<ul><li>- [ ] Done</li></ul>|139|[Little Xor](http://codeforces.com/problemset/problem/252/A)|Codeforces||Codeforces Round #153 (Div. 2)|3|\n|<ul><li>- [ ] Done</li></ul>|140|[Colorful Graph](http://codeforces.com/problemset/problem/246/D)|Codeforces||Codeforces Round #151 (Div. 2)|3|\n|<ul><li>- [ ] Done</li></ul>|141|[Heads or Tails](http://codeforces.com/problemset/problem/242/A)|Codeforces||Codeforces Round #149 (Div. 2)|3|\n|<ul><li>- [ ] Done</li></ul>|142|[Color Stripe](http://codeforces.com/problemset/problem/219/C)|Codeforces||Codeforces Round #135 (Div. 2)|3|\n|<ul><li>- [ ] Done</li></ul>|143|[Two Problems](http://codeforces.com/problemset/problem/203/A)|Codeforces||Codeforces Round #128 (Div. 2)|3|\n|<ul><li>- [ ] Done</li></ul>|144|[LLPS](http://codeforces.com/problemset/problem/202/A)|Codeforces||Codeforces Round #127 (Div. 2)|3|\n|<ul><li>- [ ] Done</li></ul>|145|[Let's Watch Football](http://codeforces.com/problemset/problem/195/A)|Codeforces||Codeforces Round #123 (Div. 2)|3|\n|<ul><li>- [ ] Done</li></ul>|146|[Funky Numbers](http://codeforces.com/problemset/problem/192/A)|Codeforces||Codeforces Round #121 (Div. 2)|3|\n|<ul><li>- [ ] Done</li></ul>|147|[Common Divisors](http://codeforces.com/problemset/problem/182/D)|Codeforces||Codeforces Round #117 (Div. 2)|3|\n|<ul><li>- [ ] Done</li></ul>|148|[Phone Code](http://codeforces.com/problemset/problem/172/A)|Codeforces||Croc Champ 2012 - Qualification Round|3|\n|<ul><li>- [ ] Done</li></ul>|149|[Dress'em in Vests!](http://codeforces.com/problemset/problem/161/A)|Codeforces||VK Cup 2012 Round 1|3|\n|<ul><li>- [ ] Done</li></ul>|150|[Students and Shoelaces](http://codeforces.com/problemset/problem/129/B)|Codeforces||Codeforces Beta Round #94 (Div. 2 Only)|3|\n|<ul><li>- [ ] Done</li></ul>|151|[Ball Game](http://codeforces.com/problemset/problem/46/A)|Codeforces||School Personal Contest #2 (Winter Computer School 2010/11) - Codeforces Beta Round #43 (ACM-ICPC Rules)|3|\n|<ul><li>- [ ] Done</li></ul>|152|[Reconnaissance](http://codeforces.com/problemset/problem/32/A)|Codeforces||Codeforces Beta Round #32 (Div. 2, Codeforces format)|3|\n|<ul><li>- [ ] Done</li></ul>|153|[Noldbach problem](http://codeforces.com/problemset/problem/17/A)|Codeforces||Codeforces Beta Round #17|3|\n|<ul><li>- [ ] Done</li></ul>|154|[Kalevitch and Chess](http://codeforces.com/problemset/problem/7/A)|Codeforces||Codeforces Beta Round #7|3|\n|<ul><li>- [ ] Done</li></ul>|155|[Tic-tac-toe](http://codeforces.com/problemset/problem/3/C)|Codeforces||Codeforces Beta Round #3|3|\n|<ul><li>- [ ] Done</li></ul>|156|[Catch Me If You Can ](http://www.spoj.com/problems/CMIYC/)|SPOJ|||3|\n|<ul><li>- [ ] Done</li></ul>|157|[Polo the Penguin and Segments ](http://codeforces.com/problemset/problem/289/A)|Codeforces||Codeforces Round #177 (Div. 2)|3|\n|<ul><li>- [ ] Done</li></ul>|158|[Point on Spiral](http://codeforces.com/problemset/problem/279/A)|Codeforces||Codeforces Round #171 (Div. 2)|3|\n|<ul><li>- [ ] Done</li></ul>|159|[Bear and Compressing](http://codeforces.com/problemset/problem/653/B)|Codeforces||IndiaHacks 2016 - Online Edition (Div. 1 + Div. 2)|3|\n|<ul><li>- [ ] Done</li></ul>|160|[A Trivial Problem](http://codeforces.com/problemset/problem/633/B)|Codeforces||Manthan, Codefest 16|3|\n|<ul><li>- [ ] Done</li></ul>|161|[Block Towers](http://codeforces.com/problemset/problem/626/C)|Codeforces||8VC Venture Cup 2016 - Elimination Round|3|\n|<ul><li>- [ ] Done</li></ul>|162|[The Text Splitting](http://codeforces.com/problemset/problem/612/A)|Codeforces||Educational Codeforces Round 4|3|\n|<ul><li>- [ ] Done</li></ul>|163|[Gennady the Dentist](http://codeforces.com/problemset/problem/585/A)|Codeforces||Codeforces Round #325 (Div. 1) & Codeforces Round #325 (Div. 2)|3|\n|<ul><li>- [ ] Done</li></ul>|164|[Finding Team Member](http://codeforces.com/problemset/problem/579/B)|Codeforces||Codeforces Round #320 (Div. 2) [Bayan Thanks-Round]|3|\n|<ul><li>- [ ] Done</li></ul>|165|[\"Or\" Game](http://codeforces.com/problemset/problem/578/B)|Codeforces||Codeforces Round #320 (Div. 1) [Bayan Thanks-Round] & Codeforces Round #320 (Div. 2) [Bayan Thanks-Round]|3|\n|<ul><li>- [ ] Done</li></ul>|166|[Primes or Palindromes?](http://codeforces.com/problemset/problem/568/A)|Codeforces||Codeforces Round #315 (Div. 1) & Codeforces Round #315 (Div. 2)|3|\n|<ul><li>- [ ] Done</li></ul>|167|[Vanya and Scales](http://codeforces.com/problemset/problem/552/C)|Codeforces||Codeforces Round #308 (Div. 2)|3|\n|<ul><li>- [ ] Done</li></ul>|168|[King of Thieves](http://codeforces.com/problemset/problem/526/A)|Codeforces||ZeptoLab Code Rush 2015|3|\n|<ul><li>- [ ] Done</li></ul>|169|[Permutations](http://codeforces.com/problemset/problem/513/B1)|Codeforces||Rockethon 2015|3|\n|<ul><li>- [ ] Done</li></ul>|170|[Secret Combination](http://codeforces.com/problemset/problem/496/B)|Codeforces||Codeforces Round #283 (Div. 2)|3|\n|<ul><li>- [ ] Done</li></ul>|171|[Vasya and Basketball](http://codeforces.com/problemset/problem/493/C)|Codeforces||Codeforces Round #281 (Div. 2)|3|\n|<ul><li>- [ ] Done</li></ul>|172|[Unbearable Controversy of Being](http://codeforces.com/problemset/problem/489/D)|Codeforces||Codeforces Round #277.5 (Div. 2)|3|\n|<ul><li>- [ ] Done</li></ul>|173|[Art Union](http://codeforces.com/problemset/problem/416/B)|Codeforces||Codeforces Round #241 (Div. 2)|3|\n|<ul><li>- [ ] Done</li></ul>|174|[A + B Strikes Back](http://codeforces.com/problemset/problem/409/H)|Codeforces||April Fools Day Contest 2014|3|\n|<ul><li>- [ ] Done</li></ul>|175|[Triangle](http://codeforces.com/problemset/problem/407/A)|Codeforces||Codeforces Round #239 (Div. 1) & Codeforces Round #239 (Div. 2)|3|\n|<ul><li>- [ ] Done</li></ul>|176|[Searching for Graph](http://codeforces.com/problemset/problem/402/C)|Codeforces||Codeforces Round #236 (Div. 2) & Codeforces Round #236 (Div. 1)|3|\n|<ul><li>- [ ] Done</li></ul>|177|[Inna and New Matrix of Candies](http://codeforces.com/problemset/problem/400/B)|Codeforces||Codeforces Round #234 (Div. 2)|3|\n|<ul><li>- [ ] Done</li></ul>|178|[Bear and Prime Numbers](http://codeforces.com/problemset/problem/385/C)|Codeforces||Codeforces Round #226 (Div. 2)|3|\n|<ul><li>- [ ] Done</li></ul>|179|[Dima and To-do List](http://codeforces.com/problemset/problem/366/B)|Codeforces||Codeforces Round #214 (Div. 2)|3|\n|<ul><li>- [ ] Done</li></ul>|180|[Vasya and Robot](http://codeforces.com/problemset/problem/354/A)|Codeforces||Codeforces Round #206 (Div. 1) & Codeforces Round #206 (Div. 2)|3|\n|<ul><li>- [ ] Done</li></ul>|181|[Perfect Pair](http://codeforces.com/problemset/problem/317/A)|Codeforces||Codeforces Round #188 (Div. 1) & Codeforces Round #188 (Div. 2)|3|\n|<ul><li>- [ ] Done</li></ul>|182|[Sereja and Bottles](http://codeforces.com/problemset/problem/315/A)|Codeforces||Codeforces Round #187 (Div. 2)|3|\n|<ul><li>- [ ] Done</li></ul>|183|[Pythagorean Theorem II](http://codeforces.com/problemset/problem/304/A)|Codeforces||Codeforces Round #183 (Div. 2)|3|\n|<ul><li>- [ ] Done</li></ul>|184|[Coach](http://codeforces.com/problemset/problem/300/B)|Codeforces||Codeforces Round #181 (Div. 2)|3|\n|<ul><li>- [ ] Done</li></ul>|185|[Cows and Poker Game](http://codeforces.com/problemset/problem/284/B)|Codeforces||Codeforces Round #174 (Div. 2)|3|\n|<ul><li>- [ ] Done</li></ul>|186|[Non-square Equation](http://codeforces.com/problemset/problem/233/B)|Codeforces||Codeforces Round #144 (Div. 2)|3|\n|<ul><li>- [ ] Done</li></ul>|187|[Robbers' watch](http://codeforces.com/problemset/problem/685/A)|Codeforces||Codeforces Round #359 (Div. 1) & Codeforces Round #359 (Div. 2)|3|\n|<ul><li>- [ ] Done</li></ul>|188|[Sagheer, the Hausmeister](http://codeforces.com/problemset/problem/812/B)|Codeforces||Codeforces Round #417 (Div. 2)|3|\n|<ul><li>- [ ] Done</li></ul>|189|[Karen and Game](http://codeforces.com/problemset/problem/815/A)|Codeforces||Codeforces Round #419 (Div. 1) & Codeforces Round #419 (Div. 2)|3|\n|<ul><li>- [ ] Done</li></ul>|190|[Mike and Cellphone](http://codeforces.com/problemset/problem/689/A)|Codeforces||Codeforces Round #361 (Div. 2)|3|\n|<ul><li>- [ ] Done</li></ul>|191|[An impassioned circulation of affection](http://codeforces.com/problemset/problem/814/C)|Codeforces||Codeforces Round #418 (Div. 2)|3|\n|<ul><li>- [ ] Done</li></ul>|192|[Masha and geometric depression](http://codeforces.com/problemset/problem/789/B)|Codeforces||Codeforces Round #407 (Div. 2)|3|\n|<ul><li>- [ ] Done</li></ul>|193|[Mahmoud and a Message](http://codeforces.com/problemset/problem/766/C)|Codeforces||Codeforces Round #396 (Div. 2)|3|\n|<ul><li>- [ ] Done</li></ul>|194|[Almost Arithmetical Progression](http://codeforces.com/problemset/problem/255/C)|Codeforces||Codeforces Round #156 (Div. 2) & Codeforces Round #156 (Div. 1)|4|\n|<ul><li>- [ ] Done</li></ul>|195|[Undoubtedly Lucky Numbers](http://codeforces.com/problemset/problem/244/B)|Codeforces||Codeforces Round #150 (Div. 2)|4|\n|<ul><li>- [ ] Done</li></ul>|196|[Magic Box](http://codeforces.com/problemset/problem/231/D)|Codeforces||Codeforces Round #143 (Div. 2)|4|\n|<ul><li>- [ ] Done</li></ul>|197|[Shifts](http://codeforces.com/problemset/problem/229/A)|Codeforces||Codeforces Round #142 (Div. 1) & Codeforces Round #142 (Div. 2)|4|\n|<ul><li>- [ ] Done</li></ul>|198|[Two Tables](http://codeforces.com/problemset/problem/228/B)|Codeforces||Codeforces Round #141 (Div. 2)|4|\n|<ul><li>- [ ] Done</li></ul>|199|[Mountain Scenery](http://codeforces.com/problemset/problem/218/A)|Codeforces||Codeforces Round #134 (Div. 2)|4|\n|<ul><li>- [ ] Done</li></ul>|200|[Hometask](http://codeforces.com/problemset/problem/214/B)|Codeforces||Codeforces Round #131 (Div. 2)|4|\n|<ul><li>- [ ] Done</li></ul>|201|[Little Elephant and Sorting](http://codeforces.com/problemset/problem/205/B)|Codeforces||Codeforces Round #129 (Div. 2)|4|\n|<ul><li>- [ ] Done</li></ul>|202|[Walking in the Rain](http://codeforces.com/problemset/problem/192/B)|Codeforces||Codeforces Round #121 (Div. 2)|4|\n|<ul><li>- [ ] Done</li></ul>|203|[Counting Rhombi](http://codeforces.com/problemset/problem/189/B)|Codeforces||Codeforces Round #119 (Div. 2)|4|\n|<ul><li>- [ ] Done</li></ul>|204|[Letter](http://codeforces.com/problemset/problem/180/C)|Codeforces||Codeforces Round #116 (Div. 2, ACM-ICPC Rules)|4|\n|<ul><li>- [ ] Done</li></ul>|205|[String Manipulation 1.0](http://codeforces.com/problemset/problem/159/C)|Codeforces||VK Cup 2012 Qualification Round 2|4|\n|<ul><li>- [ ] Done</li></ul>|206|[Message](http://codeforces.com/problemset/problem/156/A)|Codeforces||Codeforces Round #110 (Div. 1) & Codeforces Round #110 (Div. 2)|4|\n|<ul><li>- [ ] Done</li></ul>|207|[Lucky Mask](http://codeforces.com/problemset/problem/146/B)|Codeforces||Codeforces Round #104 (Div. 2)|4|\n|<ul><li>- [ ] Done</li></ul>|208|[Elevator](http://codeforces.com/problemset/problem/120/A)|Codeforces||School Regional Team Contest, Saratov, 2011|4|\n|<ul><li>- [ ] Done</li></ul>|209|[Choosing Laptop](http://codeforces.com/problemset/problem/106/B)|Codeforces||Codeforces Beta Round #82 (Div. 2)|4|\n|<ul><li>- [ ] Done</li></ul>|210|[Chord](http://codeforces.com/problemset/problem/88/A)|Codeforces||Codeforces Beta Round #73 (Div. 2 Only)|4|\n|<ul><li>- [ ] Done</li></ul>|211|[Fire Again](http://codeforces.com/problemset/problem/35/C)|Codeforces||Codeforces Beta Round #35 (Div. 2)|4|\n|<ul><li>- [ ] Done</li></ul>|212|[Spit Problem](http://codeforces.com/problemset/problem/29/A)|Codeforces||Codeforces Beta Round #29 (Div. 2, Codeforces format)|4|\n|<ul><li>- [ ] Done</li></ul>|213|[Tournament](http://codeforces.com/problemset/problem/27/B)|Codeforces||Codeforces Beta Round #27 (Codeforces format, Div. 2)|4|\n|<ul><li>- [ ] Done</li></ul>|214|[Roads not only in Berland](http://codeforces.com/problemset/problem/25/D)|Codeforces||Codeforces Beta Round #25 (Div. 2 Only)|4|\n|<ul><li>- [ ] Done</li></ul>|215|[You're Given a String...](http://codeforces.com/problemset/problem/23/A)|Codeforces||Codeforces Beta Round #23|4|\n|<ul><li>- [ ] Done</li></ul>|216|[Triangle](http://codeforces.com/problemset/problem/18/A)|Codeforces||Codeforces Beta Round #18 (Div. 2 Only)|4|\n|<ul><li>- [ ] Done</li></ul>|217|[Running Student](http://codeforces.com/problemset/problem/9/B)|Codeforces||Codeforces Beta Round #9 (Div. 2 Only)|4|\n|<ul><li>- [ ] Done</li></ul>|218|[TWO BISHOPS](http://www.spoj.com/problems/TWOBISOP/)|SPOJ|||4|\n|<ul><li>- [ ] Done</li></ul>|219|[Minion Circle](http://www.codechef.com/problems/CIRCLE)|CodeChef|||4|\n|<ul><li>- [ ] Done</li></ul>|220|[Brute-force Algorithm](https://icpcarchive.ecs.baylor.edu/index.php?option=onlinejudge&page=show_problem&problem=2745)|Live Archive|2009|Asia - Shanghai|4|\n|<ul><li>- [ ] Done</li></ul>|221|[Strange Addition](http://codeforces.com/problemset/problem/305/A)|Codeforces||Codeforces Round #184 (Div. 2)|4|\n|<ul><li>- [ ] Done</li></ul>|222|[Amity Assessment](http://codeforces.com/problemset/problem/645/A)|Codeforces||CROC 2016 - Elimination Round|4|\n|<ul><li>- [ ] Done</li></ul>|223|[Promocodes with Mistakes](http://codeforces.com/problemset/problem/637/C)|Codeforces||VK Cup 2016 - Qualification Round 1|4|\n|<ul><li>- [ ] Done</li></ul>|224|[Orchestra](http://codeforces.com/problemset/problem/635/A)|Codeforces||8VC Venture Cup 2016 - Final Round (Div. 2 Edition) & 8VC Venture Cup 2016 - Final Round (Div. 1 Edition)|4|\n|<ul><li>- [ ] Done</li></ul>|225|[Alice, Bob, Two Teams](http://codeforces.com/problemset/problem/632/B)|Codeforces||Educational Codeforces Round 9|4|\n|<ul><li>- [ ] Done</li></ul>|226|[Spongebob and Squares](http://codeforces.com/problemset/problem/599/D)|Codeforces||Codeforces Round #332 (Div. 2)|4|\n|<ul><li>- [ ] Done</li></ul>|227|[Three Logos](http://codeforces.com/problemset/problem/581/D)|Codeforces||Codeforces Round #322 (Div. 2)|4|\n|<ul><li>- [ ] Done</li></ul>|228|[Amr and Chemistry](http://codeforces.com/problemset/problem/558/C)|Codeforces||Codeforces Round #312 (Div. 2)|4|\n|<ul><li>- [ ] Done</li></ul>|229|[Arthur and Table](http://codeforces.com/problemset/problem/557/C)|Codeforces||Codeforces Round #311 (Div. 2)|4|\n|<ul><li>- [ ] Done</li></ul>|230|[Vanya and Triangles](http://codeforces.com/problemset/problem/552/D)|Codeforces||Codeforces Round #308 (Div. 2)|4|\n|<ul><li>- [ ] Done</li></ul>|231|[ZgukistringZ](http://codeforces.com/problemset/problem/551/B)|Codeforces||Codeforces Round #307 (Div. 2)|4|\n|<ul><li>- [ ] Done</li></ul>|232|[Weird Chess](http://codeforces.com/problemset/problem/538/D)|Codeforces||Codeforces Round #300|4|\n|<ul><li>- [ ] Done</li></ul>|233|[Fox And Jumping](http://codeforces.com/problemset/problem/510/D)|Codeforces||Codeforces Round #290 (Div. 2) & Codeforces Round #290 (Div. 1)|4|\n|<ul><li>- [ ] Done</li></ul>|234|[Fight the Monster](http://codeforces.com/problemset/problem/487/A)|Codeforces||Codeforces Round #278 (Div. 1) & Codeforces Round #278 (Div. 2)|4|\n|<ul><li>- [ ] Done</li></ul>|235|[Captain Marmot](http://codeforces.com/problemset/problem/474/C)|Codeforces||Codeforces Round #271 (Div. 2)|4|\n|<ul><li>- [ ] Done</li></ul>|236|[MUH and House of Cards](http://codeforces.com/problemset/problem/471/C)|Codeforces||Codeforces Round #269 (Div. 2)|4|\n|<ul><li>- [ ] Done</li></ul>|237|[Wonder Room](http://codeforces.com/problemset/problem/466/B)|Codeforces||Codeforces Round #266 (Div. 2)|4|\n|<ul><li>- [ ] Done</li></ul>|238|[Little Pony and Harmony Chest](http://codeforces.com/problemset/problem/453/B)|Codeforces||Codeforces Round #259 (Div. 1) & Codeforces Round #259 (Div. 2)|4|\n|<ul><li>- [ ] Done</li></ul>|239|[Predict Outcome of the Game](http://codeforces.com/problemset/problem/451/C)|Codeforces||Codeforces Round #258 (Div. 2)|4|\n|<ul><li>- [ ] Done</li></ul>|240|[DZY Loves Modification](http://codeforces.com/problemset/problem/446/B)|Codeforces||Codeforces Round #255 (Div. 1) & Codeforces Round #255 (Div. 2)|4|\n|<ul><li>- [ ] Done</li></ul>|241|[Kolya and Tandem Repeat](http://codeforces.com/problemset/problem/443/B)|Codeforces||Codeforces Round #253 (Div. 2)|4|\n|<ul><li>- [ ] Done</li></ul>|242|[Devu and Partitioning of the Array](http://codeforces.com/problemset/problem/439/C)|Codeforces||Codeforces Round #251 (Div. 2)|4|\n|<ul><li>- [ ] Done</li></ul>|243|[Balls Game](http://codeforces.com/problemset/problem/430/B)|Codeforces||Codeforces Round #245 (Div. 2)|4|\n|<ul><li>- [ ] Done</li></ul>|244|[Sereja and Swaps](http://codeforces.com/problemset/problem/425/A)|Codeforces||Codeforces Round #243 (Div. 1) & Codeforces Round #243 (Div. 2)|4|\n|<ul><li>- [ ] Done</li></ul>|245|[Trees in a Row](http://codeforces.com/problemset/problem/402/B)|Codeforces||Codeforces Round #236 (Div. 2)|4|\n|<ul><li>- [ ] Done</li></ul>|246|[Sereja and Prefixes](http://codeforces.com/problemset/problem/380/A)|Codeforces||Codeforces Round #223 (Div. 1) & Codeforces Round #223 (Div. 2)|4|\n|<ul><li>- [ ] Done</li></ul>|247|[Pair of Numbers](http://codeforces.com/problemset/problem/359/D)|Codeforces||Codeforces Round #209 (Div. 2)|4|\n|<ul><li>- [ ] Done</li></ul>|248|[Dima and Text Messages](http://codeforces.com/problemset/problem/358/B)|Codeforces||Codeforces Round #208 (Div. 2)|4|\n|<ul><li>- [ ] Done</li></ul>|249|[Resort](http://codeforces.com/problemset/problem/350/B)|Codeforces||Codeforces Round #203 (Div. 2)|4|\n|<ul><li>- [ ] Done</li></ul>|250|[Xenia and Spies](http://codeforces.com/problemset/problem/342/B)|Codeforces||Codeforces Round #199 (Div. 2)|4|\n|<ul><li>- [ ] Done</li></ul>|251|[Beautiful Numbers](http://codeforces.com/problemset/problem/300/C)|Codeforces||Codeforces Round #181 (Div. 2)|4|\n|<ul><li>- [ ] Done</li></ul>|252|[Ksusha and Array](http://codeforces.com/problemset/problem/299/A)|Codeforces||Croc Champ 2013 - Round 2 (Div. 2 Edition)|4|\n|<ul><li>- [ ] Done</li></ul>|253|[New Problem](http://codeforces.com/problemset/problem/278/B)|Codeforces||Codeforces Round #170 (Div. 2)|4|\n|<ul><li>- [ ] Done</li></ul>|254|[Ancient Prophesy](http://codeforces.com/problemset/problem/260/B)|Codeforces||Codeforces Round #158 (Div. 2)|4|\n|<ul><li>- [ ] Done</li></ul>|255|[View Angle](http://codeforces.com/problemset/problem/257/C)|Codeforces||Codeforces Round #159 (Div. 2)|4|\n|<ul><li>- [ ] Done</li></ul>|256|[Palindrome pairs](http://codeforces.com/problemset/problem/159/D)|Codeforces||VK Cup 2012 Qualification Round 2|4|\n|<ul><li>- [ ] Done</li></ul>|257|[Tennis Game](http://codeforces.com/problemset/problem/496/D)|Codeforces||Codeforces Round #283 (Div. 2) & Codeforces Round #283 (Div. 1)|4|\n|<ul><li>- [ ] Done</li></ul>|258|[Office Keys](http://codeforces.com/problemset/problem/830/A)|Codeforces||Codeforces Round #424 (Div. 1, rated, based on VK Cup Finals) & Codeforces Round #424 (Div. 2, rated, based on VK Cup Finals)|4|\n|<ul><li>- [ ] Done</li></ul>|259|[Tell Your World](http://codeforces.com/problemset/problem/849/B)|Codeforces||Codeforces Round #431 (Div. 2)|4|\n|<ul><li>- [ ] Done</li></ul>|260|[Remove Extra One](http://codeforces.com/problemset/problem/900/C)|Codeforces||Codeforces Round #450 (Div. 2)|4|\n|<ul><li>- [ ] Done</li></ul>|261|[Game of the Rows](http://codeforces.com/problemset/problem/839/B)|Codeforces||Codeforces Round #428 (Div. 2)|4|\n|<ul><li>- [ ] Done</li></ul>|262|[Jury Size](http://codeforces.com/problemset/problem/254/B)|Codeforces||Codeforces Round #155 (Div. 2)|5|\n|<ul><li>- [ ] Done</li></ul>|263|[Beauty Pageant](http://codeforces.com/problemset/problem/246/C)|Codeforces||Codeforces Round #151 (Div. 2)|5|\n|<ul><li>- [ ] Done</li></ul>|264|[Game on Paper](http://codeforces.com/problemset/problem/203/B)|Codeforces||Codeforces Round #128 (Div. 2)|5|\n|<ul><li>- [ ] Done</li></ul>|265|[Series of Crimes](http://codeforces.com/problemset/problem/181/A)|Codeforces||Croc Champ 2012 - Round 2 (Unofficial Div. 2 Edition)|5|\n|<ul><li>- [ ] Done</li></ul>|266|[Robot Bicorn Attack](http://codeforces.com/problemset/problem/175/A)|Codeforces||Codeforces Round #115|5|\n|<ul><li>- [ ] Done</li></ul>|267|[Broken checker](http://codeforces.com/problemset/problem/171/D)|Codeforces||April Fools Day Contest|5|\n|<ul><li>- [ ] Done</li></ul>|268|[Compatible Numbers](http://codeforces.com/problemset/problem/165/E)|Codeforces||Codeforces Round #112 (Div. 2)|5|\n|<ul><li>- [ ] Done</li></ul>|269|[Help Farmer](http://codeforces.com/problemset/problem/142/A)|Codeforces||Codeforces Round #102 (Div. 1) & Codeforces Round #102 (Div. 2)|5|\n|<ul><li>- [ ] Done</li></ul>|270|[Rectangle and Square](http://codeforces.com/problemset/problem/135/B)|Codeforces||Codeforces Beta Round #97 (Div. 1) & Codeforces Beta Round #97 (Div. 2)|5|\n|<ul><li>- [ ] Done</li></ul>|271|[Permutations](http://codeforces.com/problemset/problem/124/B)|Codeforces||Codeforces Beta Round #92 (Div. 2 Only)|5|\n|<ul><li>- [ ] Done</li></ul>|272|[Three Sons](http://codeforces.com/problemset/problem/120/D)|Codeforces||School Regional Team Contest, Saratov, 2011|5|\n|<ul><li>- [ ] Done</li></ul>|273|[Fancy Number](http://codeforces.com/problemset/problem/118/C)|Codeforces||Codeforces Beta Round #89 (Div. 2)|5|\n|<ul><li>- [ ] Done</li></ul>|274|[PFAST Inc.](http://codeforces.com/problemset/problem/114/B)|Codeforces||Codeforces Beta Round #86 (Div. 2 Only)|5|\n|<ul><li>- [ ] Done</li></ul>|275|[Clothes](http://codeforces.com/problemset/problem/102/A)|Codeforces||Codeforces Beta Round #79 (Div. 2 Only)|5|\n|<ul><li>- [ ] Done</li></ul>|276|[Petya and His Friends](http://codeforces.com/problemset/problem/66/D)|Codeforces||Codeforces Beta Round #61 (Div. 2)|5|\n|<ul><li>- [ ] Done</li></ul>|277|[Martian Dollar](http://codeforces.com/problemset/problem/41/B)|Codeforces||Codeforces Beta Round #40 (Div. 2)|5|\n|<ul><li>- [ ] Done</li></ul>|278|[Chess](http://codeforces.com/problemset/problem/38/B)|Codeforces||School Personal Contest #1 (Winter Computer School 2010/11) - Codeforces Beta Round #38 (ACM-ICPC Rules)|5|\n|<ul><li>- [ ] Done</li></ul>|279|[Accounting](http://codeforces.com/problemset/problem/30/A)|Codeforces||Codeforces Beta Round #30 (Codeforces format)|5|\n|<ul><li>- [ ] Done</li></ul>|280|[Number With The Given Amount Of Divisors](http://codeforces.com/problemset/problem/27/E)|Codeforces||Codeforces Beta Round #27 (Codeforces format, Div. 2)|5|\n|<ul><li>- [ ] Done</li></ul>|281|[Bargaining Table](http://codeforces.com/problemset/problem/22/B)|Codeforces||Codeforces Beta Round #22 (Div. 2 Only)|5|\n|<ul><li>- [ ] Done</li></ul>|282|[Four Segments](http://codeforces.com/problemset/problem/14/C)|Codeforces||Codeforces Beta Round #14 (Div. 2)|5|\n|<ul><li>- [ ] Done</li></ul>|283|[Brute-force Algorithm EXTREME](http://www.spoj.com/problems/BFALG/)|SPOJ|||5|\n|<ul><li>- [ ] Done</li></ul>|284|[4-point polyline](http://codeforces.com/problemset/problem/452/B)|Codeforces||MemSQL Start[c]UP 2.0 - Round 1|5|\n|<ul><li>- [ ] Done</li></ul>|285|[Restore Cube ](http://codeforces.com/problemset/problem/464/B)|Codeforces||Codeforces Round #265 (Div. 1)|5|\n|<ul><li>- [ ] Done</li></ul>|286|[Shopping](http://codeforces.com/problemset/problem/665/B)|Codeforces||Educational Codeforces Round 12|5|\n|<ul><li>- [ ] Done</li></ul>|287|[Fibonacci-ish](http://codeforces.com/problemset/problem/633/D)|Codeforces||Manthan, Codefest 16|5|\n|<ul><li>- [ ] Done</li></ul>|288|[Jerry's Protest](http://codeforces.com/problemset/problem/626/D)|Codeforces||8VC Venture Cup 2016 - Elimination Round|5|\n|<ul><li>- [ ] Done</li></ul>|289|[Skills](http://codeforces.com/problemset/problem/613/B)|Codeforces||Codeforces Round #339 (Div. 1) & Codeforces Round #339 (Div. 2)|5|\n|<ul><li>- [ ] Done</li></ul>|290|[Chocolate Bar](http://codeforces.com/problemset/problem/598/E)|Codeforces||Educational Codeforces Round 1|5|\n|<ul><li>- [ ] Done</li></ul>|291|[Boulevard](http://codeforces.com/problemset/problem/589/D)|Codeforces||2015-2016 ACM-ICPC, NEERC, Southern Subregional Contest (Online Mirror, ACM-ICPC Rules, Teams Preferred)|5|\n|<ul><li>- [ ] Done</li></ul>|292|[Mike and Frog](http://codeforces.com/problemset/problem/547/A)|Codeforces||Codeforces Round #305 (Div. 1) & Codeforces Round #305 (Div. 2)|5|\n|<ul><li>- [ ] Done</li></ul>|293|[Om Nom and Candies](http://codeforces.com/problemset/problem/526/C)|Codeforces||ZeptoLab Code Rush 2015|5|\n|<ul><li>- [ ] Done</li></ul>|294|[Inversions problem](http://codeforces.com/problemset/problem/513/G1)|Codeforces||Rockethon 2015|5|\n|<ul><li>- [ ] Done</li></ul>|295|[Chocolate](http://codeforces.com/problemset/problem/490/D)|Codeforces||Codeforces Round #279 (Div. 2)|5|\n|<ul><li>- [ ] Done</li></ul>|296|[Candy Boxes](http://codeforces.com/problemset/problem/488/B)|Codeforces||Codeforces Round #278 (Div. 2)|5|\n|<ul><li>- [ ] Done</li></ul>|297|[CGCDSSQ](http://codeforces.com/problemset/problem/475/D)|Codeforces||Bayan 2015 Contest Warm Up|5|\n|<ul><li>- [ ] Done</li></ul>|298|[Borya and Hanabi](http://codeforces.com/problemset/problem/442/A)|Codeforces||Codeforces Round #253 (Div. 1) & Codeforces Round #253 (Div. 2)|5|\n|<ul><li>- [ ] Done</li></ul>|299|[Roman and Numbers](http://codeforces.com/problemset/problem/401/D)|Codeforces||Codeforces Round #235 (Div. 2)|5|\n|<ul><li>- [ ] Done</li></ul>|300|[Counting Rectangles is Fun](http://codeforces.com/problemset/problem/372/B)|Codeforces||Codeforces Round #219 (Div. 1) & Codeforces Round #219 (Div. 2)|5|\n|<ul><li>- [ ] Done</li></ul>|301|[Vasya and Beautiful Arrays](http://codeforces.com/problemset/problem/354/C)|Codeforces||Codeforces Round #206 (Div. 1) & Codeforces Round #206 (Div. 2)|5|\n|<ul><li>- [ ] Done</li></ul>|302|[Vasily the Bear and Sequence](http://codeforces.com/problemset/problem/336/C)|Codeforces||Codeforces Round #195 (Div. 2)|5|\n|<ul><li>- [ ] Done</li></ul>|303|[Continued Fractions](http://codeforces.com/problemset/problem/305/B)|Codeforces||Codeforces Round #184 (Div. 2)|5|\n|<ul><li>- [ ] Done</li></ul>|304|[Calendar](http://codeforces.com/problemset/problem/304/B)|Codeforces||Codeforces Round #183 (Div. 2)|5|\n|<ul><li>- [ ] Done</li></ul>|305|[Ksusha the Squirrel](http://codeforces.com/problemset/problem/299/B)|Codeforces||Croc Champ 2013 - Round 2 (Div. 2 Edition)|5|\n|<ul><li>- [ ] Done</li></ul>|306|[Network Mask](http://codeforces.com/problemset/problem/291/C)|Codeforces||Croc Champ 2013 - Qualification Round|5|\n|<ul><li>- [ ] Done</li></ul>|307|[Nearest Fraction](http://codeforces.com/problemset/problem/281/B)|Codeforces||Codeforces Round #172 (Div. 2)|5|\n|<ul><li>- [ ] Done</li></ul>|308|[Average Numbers](http://codeforces.com/problemset/problem/134/A)|Codeforces||Codeforces Testing Round #3|5|\n|<ul><li>- [ ] Done</li></ul>|309|[Petr#](http://codeforces.com/problemset/problem/113/B)|Codeforces||Codeforces Beta Round #86 (Div. 1 Only) & Codeforces Beta Round #86 (Div. 2 Only)|5|\n|<ul><li>- [ ] Done</li></ul>|310|[Bitwise Formula](http://codeforces.com/problemset/problem/778/B)|Codeforces||Codeforces Round #402 (Div. 1) & Codeforces Round #402 (Div. 2)|5|\n|<ul><li>- [ ] Done</li></ul>|311|[Hanoi Factory](http://codeforces.com/problemset/problem/777/E)|Codeforces||Codeforces Round #401 (Div. 2)|5|\n|<ul><li>- [ ] Done</li></ul>|312|[The Queue](http://codeforces.com/problemset/problem/767/B)|Codeforces||Codeforces Round #398 (Div. 2)|5|\n|<ul><li>- [ ] Done</li></ul>|313|[Little Elephant and LCM](http://codeforces.com/problemset/problem/258/C)|Codeforces||Codeforces Round #157 (Div. 1) & Codeforces Round #157 (Div. 2)|6|\n|<ul><li>- [ ] Done</li></ul>|314|[Little Elephant and Elections](http://codeforces.com/problemset/problem/258/B)|Codeforces||Codeforces Round #157 (Div. 1) & Codeforces Round #157 (Div. 2)|6|\n|<ul><li>- [ ] Done</li></ul>|315|[Mr. Bender and Square](http://codeforces.com/problemset/problem/255/D)|Codeforces||Codeforces Round #156 (Div. 2) & Codeforces Round #156 (Div. 1)|6|\n|<ul><li>- [ ] Done</li></ul>|316|[Unsorting Array](http://codeforces.com/problemset/problem/252/B)|Codeforces||Codeforces Round #153 (Div. 2)|6|\n|<ul><li>- [ ] Done</li></ul>|317|[Easy Tape Programming](http://codeforces.com/problemset/problem/239/B)|Codeforces||Codeforces Round #148 (Div. 2)|6|\n|<ul><li>- [ ] Done</li></ul>|318|[Number of Triplets](http://codeforces.com/problemset/problem/181/B)|Codeforces||Croc Champ 2012 - Round 2 (Unofficial Div. 2 Edition)|6|\n|<ul><li>- [ ] Done</li></ul>|319|[Party](http://codeforces.com/problemset/problem/177/C2)|Codeforces||ABBYY Cup 2.0 - Easy|6|\n|<ul><li>- [ ] Done</li></ul>|320|[New Year Cards](http://codeforces.com/problemset/problem/140/B)|Codeforces||Codeforces Round #100|6|\n|<ul><li>- [ ] Done</li></ul>|321|[String](http://codeforces.com/problemset/problem/128/B)|Codeforces||Codeforces Beta Round #94 (Div. 1 Only) & Codeforces Beta Round #94 (Div. 2 Only)|6|\n|<ul><li>- [ ] Done</li></ul>|322|[Hot Bath](http://codeforces.com/problemset/problem/126/A)|Codeforces||Codeforces Beta Round #93 (Div. 1 Only) & Codeforces Beta Round #93 (Div. 2 Only)|6|\n|<ul><li>- [ ] Done</li></ul>|323|[Lucky Permutation](http://codeforces.com/problemset/problem/121/C)|Codeforces||Codeforces Beta Round #91 (Div. 1 Only) & Codeforces Beta Round #91 (Div. 2 Only)|6|\n|<ul><li>- [ ] Done</li></ul>|324|[Very Interesting Game](http://codeforces.com/problemset/problem/117/B)|Codeforces||Codeforces Beta Round #88|6|\n|<ul><li>- [ ] Done</li></ul>|325|[Lucky Probability](http://codeforces.com/problemset/problem/109/B)|Codeforces||Codeforces Beta Round #84 (Div. 1 Only) & Codeforces Beta Round #84 (Div. 2 Only)|6|\n|<ul><li>- [ ] Done</li></ul>|326|[Time to Raid Cowavans](http://codeforces.com/problemset/problem/103/D)|Codeforces||Codeforces Beta Round #80 (Div. 1 Only) & Codeforces Beta Round #80 (Div. 2 Only)|6|\n|<ul><li>- [ ] Done</li></ul>|327|[Sum of Medians](http://codeforces.com/problemset/problem/85/D)|Codeforces||Yandex.Algorithm 2011 Round 1|6|\n|<ul><li>- [ ] Done</li></ul>|328|[Heroes](http://codeforces.com/problemset/problem/77/A)|Codeforces||Codeforces Beta Round #69 (Div. 1 Only) & Codeforces Beta Round #69 (Div. 2 Only)|6|\n|<ul><li>- [ ] Done</li></ul>|329|[Harry Potter and the History of Magic](http://codeforces.com/problemset/problem/65/B)|Codeforces||Codeforces Beta Round #60|6|\n|<ul><li>- [ ] Done</li></ul>|330|[Trees](http://codeforces.com/problemset/problem/58/C)|Codeforces||Codeforces Beta Round #54 (Div. 2)|6|\n|<ul><li>- [ ] Done</li></ul>|331|[Smallest number](http://codeforces.com/problemset/problem/55/B)|Codeforces||Codeforces Beta Round #51|6|\n|<ul><li>- [ ] Done</li></ul>|332|[Land Lot](http://codeforces.com/problemset/problem/48/B)|Codeforces||School Personal Contest #3 (Winter Computer School 2010/11) - Codeforces Beta Round #45 (ACM-ICPC Rules)|6|\n|<ul><li>- [ ] Done</li></ul>|333|[Blinds](http://codeforces.com/problemset/problem/38/C)|Codeforces||School Personal Contest #1 (Winter Computer School 2010/11) - Codeforces Beta Round #38 (ACM-ICPC Rules)|6|\n|<ul><li>- [ ] Done</li></ul>|334|[Wonderful Randomized Sum](http://codeforces.com/problemset/problem/33/C)|Codeforces||Codeforces Beta Round #33 (Codeforces format)|6|\n|<ul><li>- [ ] Done</li></ul>|335|[Lizards and Basements 2](http://codeforces.com/problemset/problem/6/D)|Codeforces||Codeforces Beta Round #6 (Div. 2 Only)|6|\n|<ul><li>- [ ] Done</li></ul>|336|[Kingdoms](https://uva.onlinejudge.org/index.php?option=onlinejudge&page=show_problem&problem=3951)|UVA|||6|\n|<ul><li>- [ ] Done</li></ul>|337|[FLING1](http://www.spoj.com/problems/FLING1/)|SPOJ|||6|\n|<ul><li>- [ ] Done</li></ul>|338|[Bear and Up-Down](http://codeforces.com/problemset/problem/653/C)|Codeforces||IndiaHacks 2016 - Online Edition (Div. 1 + Div. 2)|6|\n|<ul><li>- [ ] Done</li></ul>|339|[Longest Subsequence](http://codeforces.com/problemset/problem/632/D)|Codeforces||Educational Codeforces Round 9|6|\n|<ul><li>- [ ] Done</li></ul>|340|[Vanya and Brackets](http://codeforces.com/problemset/problem/552/E)|Codeforces||Codeforces Round #308 (Div. 2)|6|\n|<ul><li>- [ ] Done</li></ul>|341|[A Heap of Heaps](http://codeforces.com/problemset/problem/538/F)|Codeforces||Codeforces Round #300|6|\n|<ul><li>- [ ] Done</li></ul>|342|[Anya and Cubes](http://codeforces.com/problemset/problem/525/E)|Codeforces||Codeforces Round #297 (Div. 2)|6|\n|<ul><li>- [ ] Done</li></ul>|343|[Restoring Increasing Sequence](http://codeforces.com/problemset/problem/490/E)|Codeforces||Codeforces Round #279 (Div. 2)|6|\n|<ul><li>- [ ] Done</li></ul>|344|[Caisa and Tree](http://codeforces.com/problemset/problem/463/E)|Codeforces||Codeforces Round #264 (Div. 2)|6|\n|<ul><li>- [ ] Done</li></ul>|345|[Divisors](http://codeforces.com/problemset/problem/448/E)|Codeforces||Codeforces Round #256 (Div. 2)|6|\n|<ul><li>- [ ] Done</li></ul>|346|[Fly, freebies, fly!](http://codeforces.com/problemset/problem/386/B)|Codeforces||Testing Round #9|6|\n|<ul><li>- [ ] Done</li></ul>|347|[New Year Letter](http://codeforces.com/problemset/problem/379/D)|Codeforces||Good Bye 2013|6|\n|<ul><li>- [ ] Done</li></ul>|348|[Maximal Area Quadrilateral](http://codeforces.com/problemset/problem/340/B)|Codeforces||Codeforces Round #198 (Div. 2)|6|\n|<ul><li>- [ ] Done</li></ul>|349|[Characteristics of Rectangles](http://codeforces.com/problemset/problem/333/D)|Codeforces||Codeforces Round #194 (Div. 1)|6|\n|<ul><li>- [ ] Done</li></ul>|350|[Oh Sweet Beaverette](http://codeforces.com/problemset/problem/331/A1)|Codeforces||ABBYY Cup 3.0 - Finals (online version)|6|\n|<ul><li>- [ ] Done</li></ul>|351|[Ants](http://codeforces.com/problemset/problem/317/B)|Codeforces||Codeforces Round #188 (Div. 1) & Codeforces Round #188 (Div. 2)|6|\n|<ul><li>- [ ] Done</li></ul>|352|[Summer Homework](http://codeforces.com/problemset/problem/316/E1)|Codeforces||ABBYY Cup 3.0|6|\n|<ul><li>- [ ] Done</li></ul>|353|[EKG](http://codeforces.com/problemset/problem/316/B1)|Codeforces||ABBYY Cup 3.0|6|\n|<ul><li>- [ ] Done</li></ul>|354|[Encrypting Messages](http://codeforces.com/problemset/problem/177/D1)|Codeforces||ABBYY Cup 2.0 - Easy|6|\n|<ul><li>- [ ] Done</li></ul>|355|[Bulls and Cows](http://codeforces.com/problemset/problem/63/C)|Codeforces||Codeforces Beta Round #59 (Div. 2)|6|\n|<ul><li>- [ ] Done</li></ul>|356|[Platforms](http://codeforces.com/problemset/problem/18/B)|Codeforces||Codeforces Beta Round #18 (Div. 2 Only)|6|\n|<ul><li>- [ ] Done</li></ul>|357|[Karen and Test](http://codeforces.com/problemset/problem/815/B)|Codeforces||Codeforces Round #419 (Div. 1) & Codeforces Round #419 (Div. 2)|6|\n|<ul><li>- [ ] Done</li></ul>|358|[Karen and Supermarket](http://codeforces.com/problemset/problem/815/C)|Codeforces||Codeforces Round #419 (Div. 1) & Codeforces Round #419 (Div. 2)|6|\n|<ul><li>- [ ] Done</li></ul>|359|[Vladik and cards](http://codeforces.com/problemset/problem/743/E)|Codeforces||Codeforces Round #384 (Div. 2)|6|\n|<ul><li>- [ ] Done</li></ul>|360|[Table with Letters - 2](http://codeforces.com/problemset/problem/253/D)|Codeforces||Codeforces Round #154 (Div. 2)|7|\n|<ul><li>- [ ] Done</li></ul>|361|[Blackboard Fibonacci](http://codeforces.com/problemset/problem/217/B)|Codeforces||Codeforces Round #134 (Div. 1) & Codeforces Round #134 (Div. 2)|7|\n|<ul><li>- [ ] Done</li></ul>|362|[Brand New Easy Problem](http://codeforces.com/problemset/problem/202/B)|Codeforces||Codeforces Round #127 (Div. 2)|7|\n|<ul><li>- [ ] Done</li></ul>|363|[Football Championship](http://codeforces.com/problemset/problem/200/C)|Codeforces||Codeforces Round #126 (Div. 2)|7|\n|<ul><li>- [ ] Done</li></ul>|364|[Xor](http://codeforces.com/problemset/problem/193/B)|Codeforces||Codeforces Round #122 (Div. 1) & Codeforces Round #122 (Div. 2)|7|\n|<ul><li>- [ ] Done</li></ul>|365|[Spiral Maximum](http://codeforces.com/problemset/problem/173/C)|Codeforces||Croc Champ 2012 - Round 1|7|\n|<ul><li>- [ ] Done</li></ul>|366|[Pairs of Numbers](http://codeforces.com/problemset/problem/134/B)|Codeforces||Codeforces Testing Round #3|7|\n|<ul><li>- [ ] Done</li></ul>|367|[Double Happiness](http://codeforces.com/problemset/problem/113/C)|Codeforces||Codeforces Beta Round #86 (Div. 1 Only) & Codeforces Beta Round #86 (Div. 2 Only)|7|\n|<ul><li>- [ ] Done</li></ul>|368|[Treasure Island](http://codeforces.com/problemset/problem/106/D)|Codeforces||Codeforces Beta Round #82 (Div. 2)|7|\n|<ul><li>- [ ] Done</li></ul>|369|[Dark Assembly](http://codeforces.com/problemset/problem/105/B)|Codeforces||Codeforces Beta Round #81|7|\n|<ul><li>- [ ] Done</li></ul>|370|[Help Victoria the Wise](http://codeforces.com/problemset/problem/98/A)|Codeforces||Codeforces Beta Round #78 (Div. 1 Only) & Codeforces Beta Round #78 (Div. 2 Only)|7|\n|<ul><li>- [ ] Done</li></ul>|371|[Journey](http://codeforces.com/problemset/problem/43/D)|Codeforces||Codeforces Beta Round #42 (Div. 2)|7|\n|<ul><li>- [ ] Done</li></ul>|372|[THE N WITTY FRIENDS](http://www.spoj.com/problems/WITTY/)|SPOJ|||7|\n|<ul><li>- [ ] Done</li></ul>|373|[Binary Table](http://codeforces.com/problemset/problem/662/C)|Codeforces||CROC 2016 - Final Round [Private, For Onsite Finalists Only]|7|\n|<ul><li>- [ ] Done</li></ul>|374|[Three-dimensional Turtle Super Computer ](http://codeforces.com/problemset/problem/638/D)|Codeforces||VK Cup 2016 - Qualification Round 2|7|\n|<ul><li>- [ ] Done</li></ul>|375|[Rat Kwesh and Cheese](http://codeforces.com/problemset/problem/621/D)|Codeforces||Codeforces Round #341 (Div. 2)|7|\n|<ul><li>- [ ] Done</li></ul>|376|[Edo and Magnets](http://codeforces.com/problemset/problem/594/C)|Codeforces||Codeforces Round #330 (Div. 1) & Codeforces Round #330 (Div. 2)|7|\n|<ul><li>- [ ] Done</li></ul>|377|[Group Photo 2 (online mirror version)](http://codeforces.com/problemset/problem/529/B)|Codeforces||VK Cup 2015 - Round 1 (unofficial online mirror, Div. 1 only)|7|\n|<ul><li>- [ ] Done</li></ul>|378|[Fuzzy Search](http://codeforces.com/problemset/problem/528/D)|Codeforces||Codeforces Round #296 (Div. 1)|7|\n|<ul><li>- [ ] Done</li></ul>|379|[Kamal-ol-molk's Painting](http://codeforces.com/problemset/problem/475/C)|Codeforces||Bayan 2015 Contest Warm Up|7|\n|<ul><li>- [ ] Done</li></ul>|380|[Little Victor and Set](http://codeforces.com/problemset/problem/460/D)|Codeforces||Codeforces Round #262 (Div. 2)|7|\n|<ul><li>- [ ] Done</li></ul>|381|[Elections](http://codeforces.com/problemset/problem/457/C)|Codeforces||MemSQL Start[c]UP 2.0 - Round 2|7|\n|<ul><li>- [ ] Done</li></ul>|382|[Special Grid](http://codeforces.com/problemset/problem/435/D)|Codeforces||Codeforces Round #249 (Div. 2)|7|\n|<ul><li>- [ ] Done</li></ul>|383|[Curious Array](http://codeforces.com/problemset/problem/407/C)|Codeforces||Codeforces Round #239 (Div. 1) & Codeforces Round #239 (Div. 2)|7|\n|<ul><li>- [ ] Done</li></ul>|384|[Wrong Floyd](http://codeforces.com/problemset/problem/350/E)|Codeforces||Codeforces Round #203 (Div. 2)|7|\n|<ul><li>- [ ] Done</li></ul>|385|[Subset Sums](http://codeforces.com/problemset/problem/348/C)|Codeforces||Codeforces Round #202 (Div. 1) & Codeforces Round #202 (Div. 2)|7|\n|<ul><li>- [ ] Done</li></ul>|386|[Divisor Tree](http://codeforces.com/problemset/problem/337/E)|Codeforces||Codeforces Round #196 (Div. 2) & Codeforces Round #196 (Div. 1)|7|\n|<ul><li>- [ ] Done</li></ul>|387|[Minimum Modular](http://codeforces.com/problemset/problem/303/C)|Codeforces||Codeforces Round #183 (Div. 1) & Codeforces Round #183 (Div. 2)|7|\n|<ul><li>- [ ] Done</li></ul>|388|[Beautiful IP Addresses](http://codeforces.com/problemset/problem/292/C)|Codeforces||Croc Champ 2013 - Round 1|7|\n|<ul><li>- [ ] Done</li></ul>|389|[Log Stream Analysis](http://codeforces.com/problemset/problem/245/F)|Codeforces||CROC-MBTU 2012, Elimination Round (ACM-ICPC)|7|\n|<ul><li>- [ ] Done</li></ul>|390|[Programming Language](http://codeforces.com/problemset/problem/200/D)|Codeforces||Codeforces Round #126 (Div. 2)|7|\n|<ul><li>- [ ] Done</li></ul>|391|[ucyhf](http://codeforces.com/problemset/problem/171/F)|Codeforces||April Fools Day Contest|7|\n|<ul><li>- [ ] Done</li></ul>|392|[Game](http://codeforces.com/problemset/problem/49/D)|Codeforces||Codeforces Beta Round #46 (Div. 2)|7|\n|<ul><li>- [ ] Done</li></ul>|393|[Seller Bob](http://codeforces.com/problemset/problem/18/D)|Codeforces||Codeforces Beta Round #18 (Div. 2 Only)|7|\n|<ul><li>- [ ] Done</li></ul>|394|[Hongcow Buys a Deck of Cards](http://codeforces.com/problemset/problem/744/C)|Codeforces||Codeforces Round #385 (Div. 1) & Codeforces Round #385 (Div. 2)|7|\n|<ul><li>- [ ] Done</li></ul>|395|[Bamboo Partition](http://codeforces.com/problemset/problem/830/C)|Codeforces||Codeforces Round #424 (Div. 1, rated, based on VK Cup Finals) & Codeforces Round #424 (Div. 2, rated, based on VK Cup Finals)|7|\n|<ul><li>- [ ] Done</li></ul>|396|[Peterson Polyglot](http://codeforces.com/problemset/problem/778/C)|Codeforces||Codeforces Round #402 (Div. 1) & Codeforces Round #402 (Div. 2)|7|\n|<ul><li>- [ ] Done</li></ul>|397|[Vladik and chat](http://codeforces.com/problemset/problem/754/C)|Codeforces||Codeforces Round #390 (Div. 2)|7|\n|<ul><li>- [ ] Done</li></ul>|398|[Anton and Permutation](http://codeforces.com/problemset/problem/785/E)|Codeforces||Codeforces Round #404 (Div. 2)|7|\n|<ul><li>- [ ] Done</li></ul>|399|[Mad Joe](http://codeforces.com/problemset/problem/250/E)|Codeforces||CROC-MBTU 2012, Final Round (Online version, Div. 2)|8|\n|<ul><li>- [ ] Done</li></ul>|400|[Suggested Friends](http://codeforces.com/problemset/problem/245/G)|Codeforces||CROC-MBTU 2012, Elimination Round (ACM-ICPC)|8|\n|<ul><li>- [ ] Done</li></ul>|401|[Crosses](http://codeforces.com/problemset/problem/215/C)|Codeforces||Codeforces Round #132 (Div. 2)|8|\n|<ul><li>- [ ] Done</li></ul>|402|[Cinema](http://codeforces.com/problemset/problem/200/A)|Codeforces||Codeforces Round #126 (Div. 2)|8|\n|<ul><li>- [ ] Done</li></ul>|403|[Zoo](http://codeforces.com/problemset/problem/183/B)|Codeforces||Croc Champ 2012 - Final|8|\n|<ul><li>- [ ] Done</li></ul>|404|[Polycarpus the Safecracker](http://codeforces.com/problemset/problem/161/E)|Codeforces||VK Cup 2012 Round 1|8|\n|<ul><li>- [ ] Done</li></ul>|405|[Help Caretaker](http://codeforces.com/problemset/problem/142/C)|Codeforces||Codeforces Round #102 (Div. 1) & Codeforces Round #102 (Div. 2)|8|\n|<ul><li>- [ ] Done</li></ul>|406|[Chip Play](http://codeforces.com/problemset/problem/89/C)|Codeforces||Codeforces Beta Round #74 (Div. 1 Only) & Codeforces Beta Round #74 (Div. 2 Only)|8|\n|<ul><li>- [ ] Done</li></ul>|407|[Mushroom Strife](http://codeforces.com/problemset/problem/60/C)|Codeforces||Codeforces Beta Round #56|8|\n|<ul><li>- [ ] Done</li></ul>|408|[Safe](http://codeforces.com/problemset/problem/47/D)|Codeforces||Codeforces Beta Round #44 (Div. 2)|8|\n|<ul><li>- [ ] Done</li></ul>|409|[Safe cracking](http://codeforces.com/problemset/problem/42/C)|Codeforces||Codeforces Beta Round #41|8|\n|<ul><li>- [ ] Done</li></ul>|410|[Collisions](http://codeforces.com/problemset/problem/34/E)|Codeforces||Codeforces Beta Round #34 (Div. 2)|8|\n|<ul><li>- [ ] Done</li></ul>|411|[Sereja and Tree](http://codeforces.com/problemset/problem/380/B)|Codeforces||Codeforces Round #223 (Div. 1) & Codeforces Round #223 (Div. 2)|8|\n|<ul><li>- [ ] Done</li></ul>|412|[The Diameter of Tree](https://icpcarchive.ecs.baylor.edu/index.php?option=onlinejudge&page=show_problem&problem=5050)|Live Archive|2014|Asia - Xian|8|\n|<ul><li>- [ ] Done</li></ul>|413|[Magic Matrix](http://codeforces.com/problemset/problem/632/F)|Codeforces||Educational Codeforces Round 9|8|\n|<ul><li>- [ ] Done</li></ul>|414|[Biathlon Track](http://codeforces.com/problemset/problem/424/D)|Codeforces||Codeforces Round #242 (Div. 2)|8|\n|<ul><li>- [ ] Done</li></ul>|415|[Broken Monitor](http://codeforces.com/problemset/problem/370/D)|Codeforces||Codeforces Round #217 (Div. 2)|8|\n|<ul><li>- [ ] Done</li></ul>|416|[Dima and Magic Guitar](http://codeforces.com/problemset/problem/366/E)|Codeforces||Codeforces Round #214 (Div. 2)|8|\n|<ul><li>- [ ] Done</li></ul>|417|[Ghd](http://codeforces.com/problemset/problem/364/D)|Codeforces||Codeforces Round #213 (Div. 1)|8|\n|<ul><li>- [ ] Done</li></ul>|418|[Beautiful Set](http://codeforces.com/problemset/problem/364/C)|Codeforces||Codeforces Round #213 (Div. 1) & Codeforces Round #213 (Div. 2)|8|\n|<ul><li>- [ ] Done</li></ul>|419|[Summer Earnings](http://codeforces.com/problemset/problem/333/E)|Codeforces||Codeforces Round #194 (Div. 1)|8|\n|<ul><li>- [ ] Done</li></ul>|420|[Cube Problem](http://codeforces.com/problemset/problem/293/C)|Codeforces||Croc Champ 2013 - Round 2|8|\n|<ul><li>- [ ] Done</li></ul>|421|[Distinct Paths](http://codeforces.com/problemset/problem/293/B)|Codeforces||Croc Champ 2013 - Round 2|8|\n|<ul><li>- [ ] Done</li></ul>|422|[Vanya and Balloons](http://codeforces.com/problemset/problem/677/E)|Codeforces||Codeforces Round #355 (Div. 2)|8|\n|<ul><li>- [ ] Done</li></ul>|423|[Dividing Kingdom II](http://codeforces.com/problemset/problem/687/D)|Codeforces||Codeforces Round #360 (Div. 1)|8|\n|<ul><li>- [ ] Done</li></ul>|424|[Kay and Eternity](http://codeforces.com/problemset/problem/685/D)|Codeforces||Codeforces Round #359 (Div. 1)|8|\n|<ul><li>- [ ] Done</li></ul>|425|[Timofey and remoduling](http://codeforces.com/problemset/problem/763/C)|Codeforces||Codeforces Round #395 (Div. 1) & Codeforces Round #395 (Div. 2)|8|\n|<ul><li>- [ ] Done</li></ul>|426|[Gosha is hunting](http://codeforces.com/problemset/problem/739/E)|Codeforces||Codeforces Round #381 (Div. 1)|8|\n|<ul><li>- [ ] Done</li></ul>|427|[Mother of Dragons](http://codeforces.com/problemset/problem/839/E)|Codeforces||Codeforces Round #428 (Div. 2)|8|\n|<ul><li>- [ ] Done</li></ul>|428|[Rats](http://codeforces.com/problemset/problem/254/D)|Codeforces||Codeforces Round #155 (Div. 2)|9|\n|<ul><li>- [ ] Done</li></ul>|429|[Race](http://codeforces.com/problemset/problem/241/F)|Codeforces||Bayan 2012-2013 Elimination Round (ACM ICPC Rules, English statements)|9|\n|<ul><li>- [ ] Done</li></ul>|430|[Bitonix' Patrol](http://codeforces.com/problemset/problem/217/D)|Codeforces||Codeforces Round #134 (Div. 1)|9|\n|<ul><li>- [ ] Done</li></ul>|431|[Brand New Problem](http://codeforces.com/problemset/problem/201/D)|Codeforces||Codeforces Round #127 (Div. 1)|9|\n|<ul><li>- [ ] Done</li></ul>|432|[Gripping Story](http://codeforces.com/problemset/problem/198/E)|Codeforces||Codeforces Round #125 (Div. 1)|9|\n|<ul><li>- [ ] Done</li></ul>|433|[Fibonacci Number](http://codeforces.com/problemset/problem/193/E)|Codeforces||Codeforces Round #122 (Div. 1)|9|\n|<ul><li>- [ ] Done</li></ul>|434|[Power Defence](http://codeforces.com/problemset/problem/175/E)|Codeforces||Codeforces Round #115|9|\n|<ul><li>- [ ] Done</li></ul>|435|[Plane of Tanks: Duel](http://codeforces.com/problemset/problem/175/D)|Codeforces||Codeforces Round #115|9|\n|<ul><li>- [ ] Done</li></ul>|436|[Minimum Diameter](http://codeforces.com/problemset/problem/164/D)|Codeforces||VK Cup 2012 Round 3|9|\n|<ul><li>- [ ] Done</li></ul>|437|[Large Refrigerator](http://codeforces.com/problemset/problem/163/D)|Codeforces||VK Cup 2012 Round 2|9|\n|<ul><li>- [ ] Done</li></ul>|438|[Frames](http://codeforces.com/problemset/problem/152/D)|Codeforces||Codeforces Round #108 (Div. 2)|9|\n|<ul><li>- [ ] Done</li></ul>|439|[Cycle](http://codeforces.com/problemset/problem/135/D)|Codeforces||Codeforces Beta Round #97 (Div. 1)|9|\n|<ul><li>- [ ] Done</li></ul>|440|[Item World](http://codeforces.com/problemset/problem/105/C)|Codeforces||Codeforces Beta Round #81|9|\n|<ul><li>- [ ] Done</li></ul>|441|[Domino](http://codeforces.com/problemset/problem/97/A)|Codeforces||Yandex.Algorithm 2011 Finals|9|\n|<ul><li>- [ ] Done</li></ul>|442|[Azembler](http://codeforces.com/problemset/problem/93/C)|Codeforces||Codeforces Beta Round #76 (Div. 1 Only) & Codeforces Beta Round #76 (Div. 2 Only)|9|\n|<ul><li>- [ ] Done</li></ul>|443|[Solitaire](http://codeforces.com/problemset/problem/71/D)|Codeforces||Codeforces Beta Round #65 (Div. 2)|9|\n|<ul><li>- [ ] Done</li></ul>|444|[Synchrophasotron](http://codeforces.com/problemset/problem/68/C)|Codeforces||Codeforces Beta Round #62|9|\n|<ul><li>- [ ] Done</li></ul>|445|[Harry Potter and the Sorting Hat](http://codeforces.com/problemset/problem/65/D)|Codeforces||Codeforces Beta Round #60|9|\n|<ul><li>- [ ] Done</li></ul>|446|[Prime Segment](http://codeforces.com/problemset/problem/64/E)|Codeforces||Unknown Language Round #1|9|\n|<ul><li>- [ ] Done</li></ul>|447|[Savior](http://codeforces.com/problemset/problem/60/D)|Codeforces||Codeforces Beta Round #56|9|\n|<ul><li>- [ ] Done</li></ul>|448|[Writing a Song](http://codeforces.com/problemset/problem/54/D)|Codeforces||Codeforces Beta Round #50|9|\n|<ul><li>- [ ] Done</li></ul>|449|[Race](http://codeforces.com/problemset/problem/43/E)|Codeforces||Codeforces Beta Round #42 (Div. 2)|9|\n|<ul><li>- [ ] Done</li></ul>|450|[Walls](https://icpcarchive.ecs.baylor.edu/index.php?option=onlinejudge&page=show_problem&problem=4234)|Live Archive|2012|North America - Southeast USA|9|\n|<ul><li>- [ ] Done</li></ul>|451|[BLOCK_D SOLVER](http://www.spoj.com/problems/BLOCK_D/)|SPOJ|||9|\n|<ul><li>- [ ] Done</li></ul>|452|[Task processing](http://codeforces.com/problemset/problem/589/K)|Codeforces||2015-2016 ACM-ICPC, NEERC, Southern Subregional Contest (Online Mirror, ACM-ICPC Rules, Teams Preferred)|9|\n|<ul><li>- [ ] Done</li></ul>|453|[Sign Posts](http://codeforces.com/problemset/problem/568/D)|Codeforces||Codeforces Round #315 (Div. 1)|9|\n|<ul><li>- [ ] Done</li></ul>|454|[Pasha and Pipe](http://codeforces.com/problemset/problem/518/F)|Codeforces||Codeforces Round #293 (Div. 2)|9|\n|<ul><li>- [ ] Done</li></ul>|455|[Roland and Rose](http://codeforces.com/problemset/problem/460/E)|Codeforces||Codeforces Round #262 (Div. 2)|9|\n|<ul><li>- [ ] Done</li></ul>|456|[Physical Education and Buns](http://codeforces.com/problemset/problem/394/D)|Codeforces||Codeforces Round #231 (Div. 2)|9|\n|<ul><li>- [ ] Done</li></ul>|457|[Supercollider](http://codeforces.com/problemset/problem/391/D1)|Codeforces||Rockethon 2014|9|\n|<ul><li>- [ ] Done</li></ul>|458|[The Tournament](http://codeforces.com/problemset/problem/391/C1)|Codeforces||Rockethon 2014|9|\n|<ul><li>- [ ] Done</li></ul>|459|[Word Folding](http://codeforces.com/problemset/problem/391/B)|Codeforces||Rockethon 2014|9|\n|<ul><li>- [ ] Done</li></ul>|460|[Dima and Kicks](http://codeforces.com/problemset/problem/358/E)|Codeforces||Codeforces Round #208 (Div. 2)|9|\n|<ul><li>- [ ] Done</li></ul>|461|[Pumping Stations](http://codeforces.com/problemset/problem/343/E)|Codeforces||Codeforces Round #200 (Div. 1)|9|\n|<ul><li>- [ ] Done</li></ul>|462|[Rectangles and Square](http://codeforces.com/problemset/problem/335/D)|Codeforces||MemSQL start[c]up Round 2 - online version|9|\n|<ul><li>- [ ] Done</li></ul>|463|[Lucky Tickets](http://codeforces.com/problemset/problem/333/C)|Codeforces||Codeforces Round #194 (Div. 1) & Codeforces Round #194 (Div. 2)|9|\n|<ul><li>- [ ] Done</li></ul>|464|[PE Lesson](http://codeforces.com/problemset/problem/316/D1)|Codeforces||ABBYY Cup 3.0|9|\n|<ul><li>- [ ] Done</li></ul>|465|[Fetch the Treasure](http://codeforces.com/problemset/problem/311/C)|Codeforces||Codeforces Round #185 (Div. 1) & Codeforces Round #185 (Div. 2)|9|\n|<ul><li>- [ ] Done</li></ul>|466|[Shaass and Painter Robot](http://codeforces.com/problemset/problem/294/D)|Codeforces||Codeforces Round #178 (Div. 2)|9|\n|<ul><li>- [ ] Done</li></ul>|467|[The Last Hole!](http://codeforces.com/problemset/problem/274/C)|Codeforces||Codeforces Round #168 (Div. 1) & Codeforces Round #168 (Div. 2)|9|\n|<ul><li>- [ ] Done</li></ul>|468|[Rhombus](http://codeforces.com/problemset/problem/263/E)|Codeforces||Codeforces Round #161 (Div. 2)|9|\n|<ul><li>- [ ] Done</li></ul>|469|[Maxim and Calculator](http://codeforces.com/problemset/problem/261/E)|Codeforces||Codeforces Round #160 (Div. 1)|9|\n|<ul><li>- [ ] Done</li></ul>|470|[Dividing Kingdom](http://codeforces.com/problemset/problem/260/E)|Codeforces||Codeforces Round #158 (Div. 2)|9|\n|<ul><li>- [ ] Done</li></ul>|471|[Travelling Through the Snow Queen's Kingdom](http://codeforces.com/problemset/problem/685/E)|Codeforces||Codeforces Round #359 (Div. 1)|9|\n|<ul><li>- [ ] Done</li></ul>|472|[Bear and Chase](http://codeforces.com/problemset/problem/679/D)|Codeforces||Codeforces Round #356 (Div. 1)|9|\n|<ul><li>- [ ] Done</li></ul>|473|[Ever-Hungry Krakozyabra](http://codeforces.com/problemset/problem/833/C)|Codeforces||Codeforces Round #426 (Div. 1) & Codeforces Round #426 (Div. 2)|9|\n|<ul><li>- [ ] Done</li></ul>|474|[Dasha and cyclic table](http://codeforces.com/problemset/problem/754/E)|Codeforces||Codeforces Round #390 (Div. 2)|9|\n|<ul><li>- [ ] Done</li></ul>|475|[Hellish Constraints](http://codeforces.com/problemset/problem/138/E)|Codeforces||Codeforces Beta Round #99 (Div. 1)|10|\n|<ul><li>- [ ] Done</li></ul>|476|[Pills](http://codeforces.com/problemset/problem/126/E)|Codeforces||Codeforces Beta Round #93 (Div. 1 Only)|10|\n|<ul><li>- [ ] Done</li></ul>|477|[Lucky Interval](http://codeforces.com/problemset/problem/109/E)|Codeforces||Codeforces Beta Round #84 (Div. 1 Only)|10|\n|<ul><li>- [ ] Done</li></ul>|478|[Lift and Throw](http://codeforces.com/problemset/problem/105/E)|Codeforces||Codeforces Beta Round #81|10|\n|<ul><li>- [ ] Done</li></ul>|479|[Robot in Basement](http://codeforces.com/problemset/problem/97/D)|Codeforces||Yandex.Algorithm 2011 Finals|10|\n|<ul><li>- [ ] Done</li></ul>|480|[Long sequence](http://codeforces.com/problemset/problem/86/E)|Codeforces||Yandex.Algorithm 2011 Round 2|10|\n|<ul><li>- [ ] Done</li></ul>|481|[Plane of Tanks](http://codeforces.com/problemset/problem/73/F)|Codeforces||Codeforces Beta Round #66|10|\n|<ul><li>- [ ] Done</li></ul>|482|[Ali goes shopping](http://codeforces.com/problemset/problem/72/E)|Codeforces||Unknown Language Round #2|10|\n|<ul><li>- [ ] Done</li></ul>|483|[Toys](http://codeforces.com/problemset/problem/44/I)|Codeforces||School Team Contest #2 (Winter Computer School 2010/11)|10|\n|<ul><li>- [ ] Done</li></ul>|484|[To Hack or not to Hack](http://codeforces.com/problemset/problem/662/E)|Codeforces||CROC 2016 - Final Round [Private, For Onsite Finalists Only]|10|\n|<ul><li>- [ ] Done</li></ul>|485|[Party](http://codeforces.com/problemset/problem/575/C)|Codeforces||Bubble Cup 8 - Finals [Online Mirror]|10|\n|<ul><li>- [ ] Done</li></ul>|486|[Gears](http://codeforces.com/problemset/problem/497/D)|Codeforces||Codeforces Round #283 (Div. 1)|10|\n|<ul><li>- [ ] Done</li></ul>|487|[Wavy numbers](http://codeforces.com/problemset/problem/478/E)|Codeforces||Codeforces Round #273 (Div. 2)|10|\n|<ul><li>- [ ] Done</li></ul>|488|[Banners](http://codeforces.com/problemset/problem/436/F)|Codeforces||Zepto Code Rush 2014|10|\n|<ul><li>- [ ] Done</li></ul>|489|[Two Circles](http://codeforces.com/problemset/problem/363/E)|Codeforces||Codeforces Round #211 (Div. 2)|10|\n|<ul><li>- [ ] Done</li></ul>|490|[Tennis Rackets](http://codeforces.com/problemset/problem/309/D)|Codeforces||Croc Champ 2013 - Finals (online version, Div. 1)|10|\n|<ul><li>- [ ] Done</li></ul>|491|[Mrs. Hudson's Pancakes](http://codeforces.com/problemset/problem/156/E)|Codeforces||Codeforces Round #110 (Div. 1)|10|\n|<ul><li>- [ ] Done</li></ul>|492|[Entertaining Geodetics](http://codeforces.com/problemset/problem/105/D)|Codeforces||Codeforces Beta Round #81|10|\n|<ul><li>- [ ] Done</li></ul>|493|[Chain Reaction](http://codeforces.com/problemset/problem/666/D)|Codeforces||Codeforces Round #349 (Div. 1) & Codeforces Round #349 (Div. 2)|10|\n|<ul><li>- [ ] Done</li></ul>|494|[The Overdosing Ubiquity](http://codeforces.com/problemset/problem/869/D)|Codeforces||Codeforces Round #439 (Div. 2)|10|\n"
  },
  {
    "path": "categories/007. data_structures/README.md",
    "content": "# 007. data_structures\n\n\n| Checkbox | ID | Problem Name|Online Judge|Year|Contest|Difficulty Level|\n|:---:|:---:|:---:|:---:|:---:|:---:|:---:|\n|<ul><li>- [ ] Done</li></ul>|1|[Registration System](http://codeforces.com/problemset/problem/4/C)|Codeforces||Codeforces Beta Round #4 (Div. 2 Only)|1|\n|<ul><li>- [ ] Done</li></ul>|2|[Street Parade](http://www.spoj.com/problems/STPAR/)|SPOJ|||1|\n|<ul><li>- [ ] Done</li></ul>|3|[Theatre Square](http://codeforces.com/problemset/problem/1/A)|Codeforces||Codeforces Beta Round #1|1|\n|<ul><li>- [ ] Done</li></ul>|4|[Can you answer these queries III](http://www.spoj.com/problems/GSS3/)|SPOJ|||1|\n|<ul><li>- [ ] Done</li></ul>|5|[Can you answer these queries II](http://www.spoj.com/problems/GSS2/)|SPOJ|||1|\n|<ul><li>- [ ] Done</li></ul>|6|[Can you answer these queries I](http://www.spoj.com/problems/GSS1/)|SPOJ|||1|\n|<ul><li>- [ ] Done</li></ul>|7|[Maximum Sum](http://www.spoj.com/problems/KGSS/)|SPOJ|||1|\n|<ul><li>- [ ] Done</li></ul>|8|[How to Handle the Fans](http://www.spoj.com/problems/AKVQLD03/)|SPOJ|||1|\n|<ul><li>- [ ] Done</li></ul>|9|[Division of Nlogonia](https://uva.onlinejudge.org/index.php?option=onlinejudge&page=show_problem&problem=2493)|UVA|||1|\n|<ul><li>- [ ] Done</li></ul>|10|[Banknotes and Coins](https://www.urionlinejudge.com.br/judge/en/problems/view/1021)|URI|||1|\n|<ul><li>- [ ] Done</li></ul>|11|[Xenia and Bit Operations](http://codeforces.com/problemset/problem/339/D)|Codeforces||Codeforces Round #197 (Div. 2)|1|\n|<ul><li>- [ ] Done</li></ul>|12|[Watchmen](http://codeforces.com/problemset/problem/650/A)|Codeforces||Codeforces Round #345 (Div. 1) & Codeforces Round #345 (Div. 2)|1|\n|<ul><li>- [ ] Done</li></ul>|13|[A and B and Compilation Errors](http://codeforces.com/problemset/problem/519/B)|Codeforces||Codeforces Round #294 (Div. 2)|1|\n|<ul><li>- [ ] Done</li></ul>|14|[Han Solo and Lazer Gun](http://codeforces.com/problemset/problem/514/B)|Codeforces||Codeforces Round #291 (Div. 2)|1|\n|<ul><li>- [ ] Done</li></ul>|15|[Misha and Changing Handles](http://codeforces.com/problemset/problem/501/B)|Codeforces||Codeforces Round #285 (Div. 2)|1|\n|<ul><li>- [ ] Done</li></ul>|16|[Number of Ways](http://codeforces.com/problemset/problem/466/C)|Codeforces||Codeforces Round #266 (Div. 2)|1|\n|<ul><li>- [ ] Done</li></ul>|17|[Prison Transfer](http://codeforces.com/problemset/problem/427/B)|Codeforces||Codeforces Round #244 (Div. 2)|1|\n|<ul><li>- [ ] Done</li></ul>|18|[Sereja and Suffixes](http://codeforces.com/problemset/problem/368/B)|Codeforces||Codeforces Round #215 (Div. 2)|1|\n|<ul><li>- [ ] Done</li></ul>|19|[Little Girl and Maximum Sum](http://codeforces.com/problemset/problem/276/C)|Codeforces||Codeforces Round #169 (Div. 2)|1|\n|<ul><li>- [ ] Done</li></ul>|20|[Simple Math](p?ID=347)|A2 Online Judge|||1|\n|<ul><li>- [ ] Done</li></ul>|21|[4 Values whose Sum is 0](https://icpcarchive.ecs.baylor.edu/index.php?option=onlinejudge&page=show_problem&problem=1507)|Live Archive|2005|Europe - Southwestern|1|\n|<ul><li>- [ ] Done</li></ul>|22|[Snacktower](http://codeforces.com/problemset/problem/767/A)|Codeforces||Codeforces Round #398 (Div. 2)|1|\n|<ul><li>- [ ] Done</li></ul>|23|[Airport](http://codeforces.com/problemset/problem/218/B)|Codeforces||Codeforces Round #134 (Div. 2)|2|\n|<ul><li>- [ ] Done</li></ul>|24|[Cd and pwd commands](http://codeforces.com/problemset/problem/158/C)|Codeforces||VK Cup 2012 Qualification Round 1|2|\n|<ul><li>- [ ] Done</li></ul>|25|[Binary Search Tree](https://uva.onlinejudge.org/index.php?option=onlinejudge&page=show_problem&problem=3769)|UVA|||2|\n|<ul><li>- [ ] Done</li></ul>|26|[Hardwood Species](http://acm.tju.edu.cn/toj/showp1388.html)|TJU|||2|\n|<ul><li>- [ ] Done</li></ul>|27|[True Friends](http://www.spoj.com/problems/TFRIENDS/)|SPOJ|||2|\n|<ul><li>- [ ] Done</li></ul>|28|[Alternating Current](http://codeforces.com/problemset/problem/343/B)|Codeforces||Codeforces Round #200 (Div. 1) & Codeforces Round #200 (Div. 2)|2|\n|<ul><li>- [ ] Done</li></ul>|29|[FIGUREFUL](http://www.spoj.com/problems/ACMCEG2B/)|SPOJ|||2|\n|<ul><li>- [ ] Done</li></ul>|30|[Chat Order](http://codeforces.com/problemset/problem/637/B)|Codeforces||VK Cup 2016 - Qualification Round 1|2|\n|<ul><li>- [ ] Done</li></ul>|31|[Modulo Sum](http://codeforces.com/problemset/problem/577/B)|Codeforces||Codeforces Round #319 (Div. 2)|2|\n|<ul><li>- [ ] Done</li></ul>|32|[Replacement](http://codeforces.com/problemset/problem/570/C)|Codeforces||Codeforces Round #316 (Div. 2)|2|\n|<ul><li>- [ ] Done</li></ul>|33|[Geometric Progression](http://codeforces.com/problemset/problem/567/C)|Codeforces||Codeforces Round #Pi (Div. 2)|2|\n|<ul><li>- [ ] Done</li></ul>|34|[Photo to Remember](http://codeforces.com/problemset/problem/522/B)|Codeforces||VK Cup 2015 - Qualification Round 1|2|\n|<ul><li>- [ ] Done</li></ul>|35|[Anya and Smartphone](http://codeforces.com/problemset/problem/518/C)|Codeforces||Codeforces Round #293 (Div. 2)|2|\n|<ul><li>- [ ] Done</li></ul>|36|[Knight Tournament](http://codeforces.com/problemset/problem/356/A)|Codeforces||Codeforces Round #207 (Div. 1) & Codeforces Round #207 (Div. 2)|2|\n|<ul><li>- [ ] Done</li></ul>|37|[Color the Fence](http://codeforces.com/problemset/problem/349/B)|Codeforces||Codeforces Round #202 (Div. 2)|2|\n|<ul><li>- [ ] Done</li></ul>|38|[Greg and Array](http://codeforces.com/problemset/problem/295/A)|Codeforces||Codeforces Round #179 (Div. 1) & Codeforces Round #179 (Div. 2)|2|\n|<ul><li>- [ ] Done</li></ul>|39|[Escape from Stones](http://codeforces.com/problemset/problem/264/A)|Codeforces||Codeforces Round #162 (Div. 1) & Codeforces Round #162 (Div. 2)|2|\n|<ul><li>- [ ] Done</li></ul>|40|[Sonya and Queries](http://codeforces.com/problemset/problem/713/A)|Codeforces||Codeforces Round #371 (Div. 1) & Codeforces Round #371 (Div. 2)|2|\n|<ul><li>- [ ] Done</li></ul>|41|[Thor](http://codeforces.com/problemset/problem/704/A)|Codeforces||Codeforces Round #366 (Div. 1) & Codeforces Round #366 (Div. 2)|2|\n|<ul><li>- [ ] Done</li></ul>|42|[The Festive Evening](http://codeforces.com/problemset/problem/834/B)|Codeforces||Codeforces Round #426 (Div. 2)|2|\n|<ul><li>- [ ] Done</li></ul>|43|[Game of Credit Cards](http://codeforces.com/problemset/problem/777/B)|Codeforces||Codeforces Round #401 (Div. 2)|2|\n|<ul><li>- [ ] Done</li></ul>|44|[Karen and Coffee](http://codeforces.com/problemset/problem/816/B)|Codeforces||Codeforces Round #419 (Div. 2)|2|\n|<ul><li>- [ ] Done</li></ul>|45|[Hoax or what](https://uva.onlinejudge.org/index.php?option=onlinejudge&page=show_problem&problem=2077)|UVA|||2|\n|<ul><li>- [ ] Done</li></ul>|46|[Counting heaps](https://icpcarchive.ecs.baylor.edu/index.php?option=onlinejudge&page=show_problem&problem=2391)|Live Archive|2008|Europe - Central|2|\n|<ul><li>- [ ] Done</li></ul>|47|[Vasya and Multisets](http://codeforces.com/problemset/problem/1051/C)|Codeforces||Educational Codeforces Round 51 (Rated for Div. 2)|2|\n|<ul><li>- [ ] Done</li></ul>|48|[Colorful Graph](http://codeforces.com/problemset/problem/246/D)|Codeforces||Codeforces Round #151 (Div. 2)|3|\n|<ul><li>- [ ] Done</li></ul>|49|[Little Elephant and Array](http://codeforces.com/problemset/problem/220/B)|Codeforces||Codeforces Round #136 (Div. 1) & Codeforces Round #136 (Div. 2)|3|\n|<ul><li>- [ ] Done</li></ul>|50|[Powerful array](http://codeforces.com/problemset/problem/86/D)|Codeforces||Yandex.Algorithm 2011 Round 2|3|\n|<ul><li>- [ ] Done</li></ul>|51|[Plug-in](http://codeforces.com/problemset/problem/81/A)|Codeforces||Yandex.Algorithm Open 2011 Qualification 1|3|\n|<ul><li>- [ ] Done</li></ul>|52|[Regular Bracket Sequence](http://codeforces.com/problemset/problem/26/B)|Codeforces||Codeforces Beta Round #26 (Codeforces format)|3|\n|<ul><li>- [ ] Done</li></ul>|53|[Stripe](http://codeforces.com/problemset/problem/18/C)|Codeforces||Codeforces Beta Round #18 (Div. 2 Only)|3|\n|<ul><li>- [ ] Done</li></ul>|54|[Longest Regular Bracket Sequence](http://codeforces.com/problemset/problem/5/C)|Codeforces||Codeforces Beta Round #5|3|\n|<ul><li>- [ ] Done</li></ul>|55|[Level Order Tree Traversal](https://www.urionlinejudge.com.br/judge/en/problems/view/1466)|URI|||3|\n|<ul><li>- [ ] Done</li></ul>|56|[Stacks](http://acm.timus.ru/problem.aspx?space=1&num=1220)|Timus|||3|\n|<ul><li>- [ ] Done</li></ul>|57|[New Reform](http://codeforces.com/problemset/problem/659/E)|Codeforces||Codeforces Round #346 (Div. 2)|3|\n|<ul><li>- [ ] Done</li></ul>|58|[Not Equal on a Segment](http://codeforces.com/problemset/problem/622/C)|Codeforces||Educational Codeforces Round 7|3|\n|<ul><li>- [ ] Done</li></ul>|59|[Replace To Make Regular Bracket Sequence](http://codeforces.com/problemset/problem/612/C)|Codeforces||Educational Codeforces Round 4|3|\n|<ul><li>- [ ] Done</li></ul>|60|[Bear and Blocks](http://codeforces.com/problemset/problem/573/B)|Codeforces||Codeforces Round #318 [RussianCodeCup Thanks-Round] (Div. 1) & Codeforces Round #318 [RussianCodeCup Thanks-Round] (Div. 2)|3|\n|<ul><li>- [ ] Done</li></ul>|61|[Order Book](http://codeforces.com/problemset/problem/572/B)|Codeforces||Codeforces Round #317 [AimFund Thanks-Round] (Div. 2)|3|\n|<ul><li>- [ ] Done</li></ul>|62|[Mike and Feet](http://codeforces.com/problemset/problem/547/B)|Codeforces||Codeforces Round #305 (Div. 1) & Codeforces Round #305 (Div. 2)|3|\n|<ul><li>- [ ] Done</li></ul>|63|[Glass Carving](http://codeforces.com/problemset/problem/527/C)|Codeforces||Codeforces Round #296 (Div. 2) & Codeforces Round #296 (Div. 1)|3|\n|<ul><li>- [ ] Done</li></ul>|64|[A and B and Interesting Substrings](http://codeforces.com/problemset/problem/519/D)|Codeforces||Codeforces Round #294 (Div. 2)|3|\n|<ul><li>- [ ] Done</li></ul>|65|[Misha and Forest](http://codeforces.com/problemset/problem/501/C)|Codeforces||Codeforces Round #285 (Div. 2) & Codeforces Round #285 (Div. 1)|3|\n|<ul><li>- [ ] Done</li></ul>|66|[Interesting Array](http://codeforces.com/problemset/problem/482/B)|Codeforces||Codeforces Round #275 (Div. 1) & Codeforces Round #275 (Div. 2)|3|\n|<ul><li>- [ ] Done</li></ul>|67|[Present](http://codeforces.com/problemset/problem/460/C)|Codeforces||Codeforces Round #262 (Div. 2)|3|\n|<ul><li>- [ ] Done</li></ul>|68|[Pashmak and Parmida's problem](http://codeforces.com/problemset/problem/459/D)|Codeforces||Codeforces Round #261 (Div. 2)|3|\n|<ul><li>- [ ] Done</li></ul>|69|[Bear and Prime Numbers](http://codeforces.com/problemset/problem/385/C)|Codeforces||Codeforces Round #226 (Div. 2)|3|\n|<ul><li>- [ ] Done</li></ul>|70|[Milking cows](http://codeforces.com/problemset/problem/383/A)|Codeforces||Codeforces Round #225 (Div. 1) & Codeforces Round #225 (Div. 2)|3|\n|<ul><li>- [ ] Done</li></ul>|71|[Sereja and Brackets](http://codeforces.com/problemset/problem/380/C)|Codeforces||Codeforces Round #223 (Div. 1) & Codeforces Round #223 (Div. 2)|3|\n|<ul><li>- [ ] Done</li></ul>|72|[Sereja and Algorithm ](http://codeforces.com/problemset/problem/367/A)|Codeforces||Codeforces Round #215 (Div. 1)|3|\n|<ul><li>- [ ] Done</li></ul>|73|[Bubble Sort Graph](http://codeforces.com/problemset/problem/340/D)|Codeforces||Codeforces Round #198 (Div. 2) & Codeforces Round #198 (Div. 1)|3|\n|<ul><li>- [ ] Done</li></ul>|74|[Maximum Absurdity](http://codeforces.com/problemset/problem/332/B)|Codeforces||Codeforces Round #193 (Div. 2)|3|\n|<ul><li>- [ ] Done</li></ul>|75|[Dima and Staircase](http://codeforces.com/problemset/problem/272/C)|Codeforces||Codeforces Round #167 (Div. 2) & Codeforces Round #167 (Div. 1)|3|\n|<ul><li>- [ ] Done</li></ul>|76|[Good Substrings](http://codeforces.com/problemset/problem/271/D)|Codeforces||Codeforces Round #166 (Div. 2)|3|\n|<ul><li>- [ ] Done</li></ul>|77|[Multithreading](http://codeforces.com/problemset/problem/270/B)|Codeforces||Codeforces Round #165 (Div. 2)|3|\n|<ul><li>- [ ] Done</li></ul>|78|[Heap Operations](http://codeforces.com/problemset/problem/681/C)|Codeforces||Codeforces Round #357 (Div. 2)|3|\n|<ul><li>- [ ] Done</li></ul>|79|[Blue Mary Needs Help Again](http://www.spoj.com/problems/CASHIER/)|SPOJ|||3|\n|<ul><li>- [ ] Done</li></ul>|80|[Okabe and Boxes](http://codeforces.com/problemset/problem/821/C)|Codeforces||Codeforces Round #420 (Div. 2)|3|\n|<ul><li>- [ ] Done</li></ul>|81|[Vasiliy's Multiset](http://codeforces.com/problemset/problem/706/D)|Codeforces||Codeforces Round #367 (Div. 2)|3|\n|<ul><li>- [ ] Done</li></ul>|82|[Almost Union-Find](https://uva.onlinejudge.org/index.php?option=onlinejudge&page=show_problem&problem=3138)|UVA|||3|\n|<ul><li>- [ ] Done</li></ul>|83|[Almost Arithmetical Progression](http://codeforces.com/problemset/problem/255/C)|Codeforces||Codeforces Round #156 (Div. 2) & Codeforces Round #156 (Div. 1)|4|\n|<ul><li>- [ ] Done</li></ul>|84|[XOR on Segment](http://codeforces.com/problemset/problem/242/E)|Codeforces||Codeforces Round #149 (Div. 2)|4|\n|<ul><li>- [ ] Done</li></ul>|85|[King's Path](http://codeforces.com/problemset/problem/242/C)|Codeforces||Codeforces Round #149 (Div. 2)|4|\n|<ul><li>- [ ] Done</li></ul>|86|[Little Elephant and Cards](http://codeforces.com/problemset/problem/204/B)|Codeforces||Codeforces Round #129 (Div. 1) & Codeforces Round #129 (Div. 2)|4|\n|<ul><li>- [ ] Done</li></ul>|87|[After Training](http://codeforces.com/problemset/problem/195/B)|Codeforces||Codeforces Round #123 (Div. 2)|4|\n|<ul><li>- [ ] Done</li></ul>|88|[Fools and Roads](http://codeforces.com/problemset/problem/191/C)|Codeforces||Codeforces Round #121 (Div. 1) & Codeforces Round #121 (Div. 2)|4|\n|<ul><li>- [ ] Done</li></ul>|89|[Find Pair](http://codeforces.com/problemset/problem/160/C)|Codeforces||Codeforces Round #111 (Div. 2)|4|\n|<ul><li>- [ ] Done</li></ul>|90|[String Manipulation 1.0](http://codeforces.com/problemset/problem/159/C)|Codeforces||VK Cup 2012 Qualification Round 2|4|\n|<ul><li>- [ ] Done</li></ul>|91|[Anagram Search](http://codeforces.com/problemset/problem/144/C)|Codeforces||Codeforces Round #103 (Div. 2)|4|\n|<ul><li>- [ ] Done</li></ul>|92|[New Year Snowmen](http://codeforces.com/problemset/problem/140/C)|Codeforces||Codeforces Round #100|4|\n|<ul><li>- [ ] Done</li></ul>|93|[Petya and Divisors](http://codeforces.com/problemset/problem/111/B)|Codeforces||Codeforces Beta Round #85 (Div. 1 Only) & Codeforces Beta Round #85 (Div. 2 Only)|4|\n|<ul><li>- [ ] Done</li></ul>|94|[Enemy is weak](http://codeforces.com/problemset/problem/61/E)|Codeforces||Codeforces Beta Round #57 (Div. 2)|4|\n|<ul><li>- [ ] Done</li></ul>|95|[Circular RMQ](http://codeforces.com/problemset/problem/52/C)|Codeforces||Codeforces Testing Round #1|4|\n|<ul><li>- [ ] Done</li></ul>|96|[SBE201 Linked List](http://www.spoj.com/problems/SBE201P2/)|SPOJ|||4|\n|<ul><li>- [ ] Done</li></ul>|97|[Ice-cream Tycoon](http://acm.sgu.ru/problem.php?contest=0&problem=311)|SGU|||4|\n|<ul><li>- [ ] Done</li></ul>|98|[Friends or Not](http://codeforces.com/problemset/problem/159/A)|Codeforces||VK Cup 2012 Qualification Round 2|4|\n|<ul><li>- [ ] Done</li></ul>|99|[Processing Queries](http://codeforces.com/problemset/problem/644/B)|Codeforces||CROC 2016 - Qualification|4|\n|<ul><li>- [ ] Done</li></ul>|100|[Report](http://codeforces.com/problemset/problem/631/C)|Codeforces||Codeforces Round #344 (Div. 2)|4|\n|<ul><li>- [ ] Done</li></ul>|101|[Babaei and Birthday Cake](http://codeforces.com/problemset/problem/629/D)|Codeforces||Codeforces Round #343 (Div. 2)|4|\n|<ul><li>- [ ] Done</li></ul>|102|[XOR and Favorite Number](http://codeforces.com/problemset/problem/617/E)|Codeforces||Codeforces Round #340 (Div. 2)|4|\n|<ul><li>- [ ] Done</li></ul>|103|[Longest k-Good Segment](http://codeforces.com/problemset/problem/616/D)|Codeforces||Educational Codeforces Round 5|4|\n|<ul><li>- [ ] Done</li></ul>|104|[Lazy Student](http://codeforces.com/problemset/problem/605/B)|Codeforces||Codeforces Round #335 (Div. 1) & Codeforces Round #335 (Div. 2)|4|\n|<ul><li>- [ ] Done</li></ul>|105|[One-Dimensional Battle Ships](http://codeforces.com/problemset/problem/567/D)|Codeforces||Codeforces Round #Pi (Div. 2)|4|\n|<ul><li>- [ ] Done</li></ul>|106|[Arthur and Table](http://codeforces.com/problemset/problem/557/C)|Codeforces||Codeforces Round #311 (Div. 2)|4|\n|<ul><li>- [ ] Done</li></ul>|107|[Case of Fugitive](http://codeforces.com/problemset/problem/555/B)|Codeforces||Codeforces Round #310 (Div. 1) & Codeforces Round #310 (Div. 2)|4|\n|<ul><li>- [ ] Done</li></ul>|108|[Vanya and Triangles](http://codeforces.com/problemset/problem/552/D)|Codeforces||Codeforces Round #308 (Div. 2)|4|\n|<ul><li>- [ ] Done</li></ul>|109|[Clique Problem](http://codeforces.com/problemset/problem/527/D)|Codeforces||Codeforces Round #296 (Div. 2) & Codeforces Round #296 (Div. 1)|4|\n|<ul><li>- [ ] Done</li></ul>|110|[A and B and Lecture Rooms](http://codeforces.com/problemset/problem/519/E)|Codeforces||Codeforces Round #294 (Div. 2)|4|\n|<ul><li>- [ ] Done</li></ul>|111|[Ant colony](http://codeforces.com/problemset/problem/474/F)|Codeforces||Codeforces Round #271 (Div. 2)|4|\n|<ul><li>- [ ] Done</li></ul>|112|[Propagating tree](http://codeforces.com/problemset/problem/383/C)|Codeforces||Codeforces Round #225 (Div. 1) & Codeforces Round #225 (Div. 2)|4|\n|<ul><li>- [ ] Done</li></ul>|113|[Maximum Submatrix 2](http://codeforces.com/problemset/problem/375/B)|Codeforces||Codeforces Round #221 (Div. 1) & Codeforces Round #221 (Div. 2)|4|\n|<ul><li>- [ ] Done</li></ul>|114|[Vessels](http://codeforces.com/problemset/problem/371/D)|Codeforces||Codeforces Round #218 (Div. 2)|4|\n|<ul><li>- [ ] Done</li></ul>|115|[Matrix](http://codeforces.com/problemset/problem/364/A)|Codeforces||Codeforces Round #213 (Div. 1) & Codeforces Round #213 (Div. 2)|4|\n|<ul><li>- [ ] Done</li></ul>|116|[Pair of Numbers](http://codeforces.com/problemset/problem/359/D)|Codeforces||Codeforces Round #209 (Div. 2)|4|\n|<ul><li>- [ ] Done</li></ul>|117|[Xenia and Tree](http://codeforces.com/problemset/problem/342/E)|Codeforces||Codeforces Round #199 (Div. 2)|4|\n|<ul><li>- [ ] Done</li></ul>|118|[Psychos in a Line](http://codeforces.com/problemset/problem/319/B)|Codeforces||Codeforces Round #189 (Div. 1) & Codeforces Round #189 (Div. 2)|4|\n|<ul><li>- [ ] Done</li></ul>|119|[Planets](http://codeforces.com/problemset/problem/229/B)|Codeforces||Codeforces Round #142 (Div. 1) & Codeforces Round #142 (Div. 2)|4|\n|<ul><li>- [ ] Done</li></ul>|120|[Queue](http://codeforces.com/problemset/problem/91/B)|Codeforces||Codeforces Beta Round #75 (Div. 1 Only) & Codeforces Beta Round #75 (Div. 2 Only)|4|\n|<ul><li>- [ ] Done</li></ul>|121|[Fox And Jumping](http://codeforces.com/problemset/problem/510/D)|Codeforces||Codeforces Round #290 (Div. 2) & Codeforces Round #290 (Div. 1)|4|\n|<ul><li>- [ ] Done</li></ul>|122|[Drazil and Tiles](http://codeforces.com/problemset/problem/515/D)|Codeforces||Codeforces Round #292 (Div. 2) & Codeforces Round #292 (Div. 1)|4|\n|<ul><li>- [ ] Done</li></ul>|123|[Tree Construction](http://codeforces.com/problemset/problem/675/D)|Codeforces||Codeforces Round #353 (Div. 2)|4|\n|<ul><li>- [ ] Done</li></ul>|124|[Money Transfers](http://codeforces.com/problemset/problem/675/C)|Codeforces||Codeforces Round #353 (Div. 2)|4|\n|<ul><li>- [ ] Done</li></ul>|125|[Ada and List](http://www.spoj.com/problems/ADALIST/)|SPOJ|||4|\n|<ul><li>- [ ] Done</li></ul>|126|[Predict Outcome of the Game](http://codeforces.com/problemset/problem/451/C)|Codeforces||Codeforces Round #258 (Div. 2)|4|\n|<ul><li>- [ ] Done</li></ul>|127|[Alyona and a tree](http://codeforces.com/problemset/problem/739/B)|Codeforces||Codeforces Round #381 (Div. 1) & Codeforces Round #381 (Div. 2)|4|\n|<ul><li>- [ ] Done</li></ul>|128|[Remove Extra One](http://codeforces.com/problemset/problem/900/C)|Codeforces||Codeforces Round #450 (Div. 2)|4|\n|<ul><li>- [ ] Done</li></ul>|129|[Blood Cousins](http://codeforces.com/problemset/problem/208/E)|Codeforces||Codeforces Round #130 (Div. 2)|5|\n|<ul><li>- [ ] Done</li></ul>|130|[Suspects](http://codeforces.com/problemset/problem/156/B)|Codeforces||Codeforces Round #110 (Div. 1) & Codeforces Round #110 (Div. 2)|5|\n|<ul><li>- [ ] Done</li></ul>|131|[Missile Silos](http://codeforces.com/problemset/problem/144/D)|Codeforces||Codeforces Round #103 (Div. 2)|5|\n|<ul><li>- [ ] Done</li></ul>|132|[Petr#](http://codeforces.com/problemset/problem/113/B)|Codeforces||Codeforces Beta Round #86 (Div. 1 Only) & Codeforces Beta Round #86 (Div. 2 Only)|5|\n|<ul><li>- [ ] Done</li></ul>|133|[Colorful Field](http://codeforces.com/problemset/problem/79/B)|Codeforces||Codeforces Beta Round #71|5|\n|<ul><li>- [ ] Done</li></ul>|134|[Unordered Subsequence](http://codeforces.com/problemset/problem/27/C)|Codeforces||Codeforces Beta Round #27 (Codeforces format, Div. 2)|5|\n|<ul><li>- [ ] Done</li></ul>|135|[Exposition](http://codeforces.com/problemset/problem/6/E)|Codeforces||Codeforces Beta Round #6 (Div. 2 Only)|5|\n|<ul><li>- [ ] Done</li></ul>|136|[Nested Segments](http://codeforces.com/problemset/problem/652/D)|Codeforces||Educational Codeforces Round 10|5|\n|<ul><li>- [ ] Done</li></ul>|137|[Little Artem and Time Machine](http://codeforces.com/problemset/problem/641/E)|Codeforces||VK Cup 2016 - Round 2|5|\n|<ul><li>- [ ] Done</li></ul>|138|[Running with Obstacles](http://codeforces.com/problemset/problem/637/D)|Codeforces||VK Cup 2016 - Qualification Round 1|5|\n|<ul><li>- [ ] Done</li></ul>|139|[Spy Syndrome 2](http://codeforces.com/problemset/problem/633/C)|Codeforces||Manthan, Codefest 16|5|\n|<ul><li>- [ ] Done</li></ul>|140|[Factory Repairs](http://codeforces.com/problemset/problem/627/B)|Codeforces||8VC Venture Cup 2016 - Final Round|5|\n|<ul><li>- [ ] Done</li></ul>|141|[New Year Tree](http://codeforces.com/problemset/problem/620/E)|Codeforces||Educational Codeforces Round 6|5|\n|<ul><li>- [ ] Done</li></ul>|142|[Minimum spanning tree for each edge](http://codeforces.com/problemset/problem/609/E)|Codeforces||Educational Codeforces Round 3|5|\n|<ul><li>- [ ] Done</li></ul>|143|[Lipshitz Sequence](http://codeforces.com/problemset/problem/601/B)|Codeforces||Codeforces Round #333 (Div. 1) & Codeforces Round #333 (Div. 2)|5|\n|<ul><li>- [ ] Done</li></ul>|144|[Duff in the Army](http://codeforces.com/problemset/problem/587/C)|Codeforces||Codeforces Round #326 (Div. 1) & Codeforces Round #326 (Div. 2)|5|\n|<ul><li>- [ ] Done</li></ul>|145|[A Simple Task](http://codeforces.com/problemset/problem/558/E)|Codeforces||Codeforces Round #312 (Div. 2)|5|\n|<ul><li>- [ ] Done</li></ul>|146|[Case of Chocolate](http://codeforces.com/problemset/problem/555/C)|Codeforces||Codeforces Round #310 (Div. 1) & Codeforces Round #310 (Div. 2)|5|\n|<ul><li>- [ ] Done</li></ul>|147|[Handshakes](http://codeforces.com/problemset/problem/534/D)|Codeforces||Codeforces Round #298 (Div. 2)|5|\n|<ul><li>- [ ] Done</li></ul>|148|[Statistics of Recompressing Videos](http://codeforces.com/problemset/problem/523/D)|Codeforces||VK Cup 2015 - Qualification Round 2|5|\n|<ul><li>- [ ] Done</li></ul>|149|[R2D2 and Droid Army](http://codeforces.com/problemset/problem/514/D)|Codeforces||Codeforces Round #291 (Div. 2)|5|\n|<ul><li>- [ ] Done</li></ul>|150|[Misha and Permutations Summation](http://codeforces.com/problemset/problem/501/D)|Codeforces||Codeforces Round #285 (Div. 2) & Codeforces Round #285 (Div. 1)|5|\n|<ul><li>- [ ] Done</li></ul>|151|[Strip](http://codeforces.com/problemset/problem/487/B)|Codeforces||Codeforces Round #278 (Div. 1) & Codeforces Round #278 (Div. 2)|5|\n|<ul><li>- [ ] Done</li></ul>|152|[CGCDSSQ](http://codeforces.com/problemset/problem/475/D)|Codeforces||Bayan 2015 Contest Warm Up|5|\n|<ul><li>- [ ] Done</li></ul>|153|[Pillars](http://codeforces.com/problemset/problem/474/E)|Codeforces||Codeforces Round #271 (Div. 2)|5|\n|<ul><li>- [ ] Done</li></ul>|154|[The Child and Sequence](http://codeforces.com/problemset/problem/438/D)|Codeforces||Codeforces Round #250 (Div. 1)|5|\n|<ul><li>- [ ] Done</li></ul>|155|[Tricky Function](http://codeforces.com/problemset/problem/429/D)|Codeforces||Codeforces Round #245 (Div. 1)|5|\n|<ul><li>- [ ] Done</li></ul>|156|[Preparing for the Contest](http://codeforces.com/problemset/problem/377/B)|Codeforces||Codeforces Round #222 (Div. 1) & Codeforces Round #222 (Div. 2)|5|\n|<ul><li>- [ ] Done</li></ul>|157|[Tree and Queries](http://codeforces.com/problemset/problem/375/D)|Codeforces||Codeforces Round #221 (Div. 1)|5|\n|<ul><li>- [ ] Done</li></ul>|158|[Sereja ans Anagrams](http://codeforces.com/problemset/problem/367/B)|Codeforces||Codeforces Round #215 (Div. 1) & Codeforces Round #215 (Div. 2)|5|\n|<ul><li>- [ ] Done</li></ul>|159|[Water Tree](http://codeforces.com/problemset/problem/343/D)|Codeforces||Codeforces Round #200 (Div. 1)|5|\n|<ul><li>- [ ] Done</li></ul>|160|[Copying Data](http://codeforces.com/problemset/problem/292/E)|Codeforces||Croc Champ 2013 - Round 1|5|\n|<ul><li>- [ ] Done</li></ul>|161|[Connected Components](http://codeforces.com/problemset/problem/292/D)|Codeforces||Croc Champ 2013 - Round 1|5|\n|<ul><li>- [ ] Done</li></ul>|162|[Sausage Maximization](http://codeforces.com/problemset/problem/282/E)|Codeforces||Codeforces Round #173 (Div. 2)|5|\n|<ul><li>- [ ] Done</li></ul>|163|[Maximum Xor Secondary](http://codeforces.com/problemset/problem/280/B)|Codeforces||Codeforces Round #172 (Div. 1) & Codeforces Round #172 (Div. 2)|5|\n|<ul><li>- [ ] Done</li></ul>|164|[Text Editor](http://codeforces.com/problemset/problem/253/C)|Codeforces||Codeforces Round #154 (Div. 2)|5|\n|<ul><li>- [ ] Done</li></ul>|165|[Bracket Sequence](http://codeforces.com/problemset/problem/223/A)|Codeforces||Codeforces Round #138 (Div. 1) & Codeforces Round #138 (Div. 2)|5|\n|<ul><li>- [ ] Done</li></ul>|166|[Subsegments](http://codeforces.com/problemset/problem/69/E)|Codeforces||Codeforces Beta Round #63 (Div. 2)|5|\n|<ul><li>- [ ] Done</li></ul>|167|[Mail Stamps](http://codeforces.com/problemset/problem/29/C)|Codeforces||Codeforces Beta Round #29 (Div. 2, Codeforces format)|5|\n|<ul><li>- [ ] Done</li></ul>|168|[Kay and Snowflake](http://codeforces.com/problemset/problem/685/B)|Codeforces||Codeforces Round #359 (Div. 1) & Codeforces Round #359 (Div. 2)|5|\n|<ul><li>- [ ] Done</li></ul>|169|[Cards Sorting](http://codeforces.com/problemset/problem/830/B)|Codeforces||Codeforces Round #424 (Div. 1, rated, based on VK Cup Finals) & Codeforces Round #424 (Div. 2, rated, based on VK Cup Finals)|5|\n|<ul><li>- [ ] Done</li></ul>|170|[The Bakery](http://codeforces.com/problemset/problem/833/B)|Codeforces||Codeforces Round #426 (Div. 1) & Codeforces Round #426 (Div. 2)|5|\n|<ul><li>- [ ] Done</li></ul>|171|[Hanoi Factory](http://codeforces.com/problemset/problem/777/E)|Codeforces||Codeforces Round #401 (Div. 2)|5|\n|<ul><li>- [ ] Done</li></ul>|172|[Leaving Auction](http://codeforces.com/problemset/problem/749/D)|Codeforces||Codeforces Round #388 (Div. 2)|5|\n|<ul><li>- [ ] Done</li></ul>|173|[Cartons of milk](http://codeforces.com/problemset/problem/767/D)|Codeforces||Codeforces Round #398 (Div. 2)|5|\n|<ul><li>- [ ] Done</li></ul>|174|[Mahmoud and a Dictionary](http://codeforces.com/problemset/problem/766/D)|Codeforces||Codeforces Round #396 (Div. 2)|5|\n|<ul><li>- [ ] Done</li></ul>|175|[Fedor and coupons](http://codeforces.com/problemset/problem/754/D)|Codeforces||Codeforces Round #390 (Div. 2)|5|\n|<ul><li>- [ ] Done</li></ul>|176|[Maxim and Array](http://codeforces.com/problemset/problem/721/D)|Codeforces||Codeforces Round #374 (Div. 2)|5|\n|<ul><li>- [ ] Done</li></ul>|177|[Vitya and Strange Lesson](http://codeforces.com/problemset/problem/842/D)|Codeforces||Codeforces Round #430 (Div. 2)|5|\n|<ul><li>- [ ] Done</li></ul>|178|[Mishka and Interesting sum](http://codeforces.com/problemset/problem/703/D)|Codeforces||Codeforces Round #365 (Div. 2)|5|\n|<ul><li>- [ ] Done</li></ul>|179|[Friends and Subsequences](http://codeforces.com/problemset/problem/689/D)|Codeforces||Codeforces Round #361 (Div. 2)|5|\n|<ul><li>- [ ] Done</li></ul>|180|[Persistent Bookcase ](http://codeforces.com/problemset/problem/707/D)|Codeforces||Codeforces Round #368 (Div. 2)|5|\n|<ul><li>- [ ] Done</li></ul>|181|[Hydra](http://codeforces.com/problemset/problem/243/B)|Codeforces||Codeforces Round #150 (Div. 1) & Codeforces Round #150 (Div. 2)|6|\n|<ul><li>- [ ] Done</li></ul>|182|[Two Strings](http://codeforces.com/problemset/problem/223/B)|Codeforces||Codeforces Round #138 (Div. 1) & Codeforces Round #138 (Div. 2)|6|\n|<ul><li>- [ ] Done</li></ul>|183|[Lucky Queries](http://codeforces.com/problemset/problem/145/E)|Codeforces||Codeforces Round #104 (Div. 1)|6|\n|<ul><li>- [ ] Done</li></ul>|184|[Time to Raid Cowavans](http://codeforces.com/problemset/problem/103/D)|Codeforces||Codeforces Beta Round #80 (Div. 1 Only) & Codeforces Beta Round #80 (Div. 2 Only)|6|\n|<ul><li>- [ ] Done</li></ul>|185|[Buses](http://codeforces.com/problemset/problem/101/B)|Codeforces||Codeforces Beta Round #79 (Div. 1 Only) & Codeforces Beta Round #79 (Div. 2 Only)|6|\n|<ul><li>- [ ] Done</li></ul>|186|[Sum of Medians](http://codeforces.com/problemset/problem/85/D)|Codeforces||Yandex.Algorithm 2011 Round 1|6|\n|<ul><li>- [ ] Done</li></ul>|187|[Beaver](http://codeforces.com/problemset/problem/79/C)|Codeforces||Codeforces Beta Round #71|6|\n|<ul><li>- [ ] Done</li></ul>|188|[Holes](http://codeforces.com/problemset/problem/13/E)|Codeforces||Codeforces Beta Round #13|6|\n|<ul><li>- [ ] Done</li></ul>|189|[Messenger](http://codeforces.com/problemset/problem/631/D)|Codeforces||Codeforces Round #344 (Div. 2)|6|\n|<ul><li>- [ ] Done</li></ul>|190|[Subsequences](http://codeforces.com/problemset/problem/597/C)|Codeforces||Testing Round #12|6|\n|<ul><li>- [ ] Done</li></ul>|191|[Hiring](http://codeforces.com/problemset/problem/589/G)|Codeforces||2015-2016 ACM-ICPC, NEERC, Southern Subregional Contest (Online Mirror, ACM-ICPC Rules, Teams Preferred)|6|\n|<ul><li>- [ ] Done</li></ul>|192|[Kefa and Watch](http://codeforces.com/problemset/problem/580/E)|Codeforces||Codeforces Round #321 (Div. 2)|6|\n|<ul><li>- [ ] Done</li></ul>|193|[Restructuring Company](http://codeforces.com/problemset/problem/566/D)|Codeforces||VK Cup 2015 - Finals, online mirror|6|\n|<ul><li>- [ ] Done</li></ul>|194|[GukiZ and GukiZiana](http://codeforces.com/problemset/problem/551/E)|Codeforces||Codeforces Round #307 (Div. 2)|6|\n|<ul><li>- [ ] Done</li></ul>|195|[Infinite Inversions](http://codeforces.com/problemset/problem/540/E)|Codeforces||Codeforces Round #301 (Div. 2)|6|\n|<ul><li>- [ ] Done</li></ul>|196|[A Heap of Heaps](http://codeforces.com/problemset/problem/538/F)|Codeforces||Codeforces Round #300|6|\n|<ul><li>- [ ] Done</li></ul>|197|[Arthur and Walls](http://codeforces.com/problemset/problem/525/D)|Codeforces||Codeforces Round #297 (Div. 2)|6|\n|<ul><li>- [ ] Done</li></ul>|198|[Closest Equals](http://codeforces.com/problemset/problem/522/D)|Codeforces||VK Cup 2015 - Qualification Round 1|6|\n|<ul><li>- [ ] Done</li></ul>|199|[Drazil and Park](http://codeforces.com/problemset/problem/515/E)|Codeforces||Codeforces Round #292 (Div. 2) & Codeforces Round #292 (Div. 1)|6|\n|<ul><li>- [ ] Done</li></ul>|200|[New Year Domino](http://codeforces.com/problemset/problem/500/E)|Codeforces||Good Bye 2014|6|\n|<ul><li>- [ ] Done</li></ul>|201|[LIS of Sequence](http://codeforces.com/problemset/problem/486/E)|Codeforces||Codeforces Round #277 (Div. 2)|6|\n|<ul><li>- [ ] Done</li></ul>|202|[Kindergarten](http://codeforces.com/problemset/problem/484/D)|Codeforces||Codeforces Round #276 (Div. 1)|6|\n|<ul><li>- [ ] Done</li></ul>|203|[Appleman and a Sheet of Paper](http://codeforces.com/problemset/problem/461/C)|Codeforces||Codeforces Round #263 (Div. 1) & Codeforces Round #263 (Div. 2)|6|\n|<ul><li>- [ ] Done</li></ul>|204|[Serega and Fun](http://codeforces.com/problemset/problem/455/D)|Codeforces||Codeforces Round #260 (Div. 1)|6|\n|<ul><li>- [ ] Done</li></ul>|205|[DZY Loves Fibonacci Numbers](http://codeforces.com/problemset/problem/446/C)|Codeforces||Codeforces Round #255 (Div. 1) & Codeforces Round #255 (Div. 2)|6|\n|<ul><li>- [ ] Done</li></ul>|206|[DZY Loves Colors](http://codeforces.com/problemset/problem/444/C)|Codeforces||Codeforces Round #254 (Div. 1) & Codeforces Round #254 (Div. 2)|6|\n|<ul><li>- [ ] Done</li></ul>|207|[Artem and Array ](http://codeforces.com/problemset/problem/442/C)|Codeforces||Codeforces Round #253 (Div. 1)|6|\n|<ul><li>- [ ] Done</li></ul>|208|[On Changing Tree](http://codeforces.com/problemset/problem/396/C)|Codeforces||Codeforces Round #232 (Div. 1) & Codeforces Round #232 (Div. 2)|6|\n|<ul><li>- [ ] Done</li></ul>|209|[New Year Tree](http://codeforces.com/problemset/problem/379/F)|Codeforces||Good Bye 2013|6|\n|<ul><li>- [ ] Done</li></ul>|210|[Watching Fireworks is Fun](http://codeforces.com/problemset/problem/372/C)|Codeforces||Codeforces Round #219 (Div. 1) & Codeforces Round #219 (Div. 2)|6|\n|<ul><li>- [ ] Done</li></ul>|211|[Valera and Queries](http://codeforces.com/problemset/problem/369/E)|Codeforces||Codeforces Round #216 (Div. 2)|6|\n|<ul><li>- [ ] Done</li></ul>|212|[Insertion Sort](http://codeforces.com/problemset/problem/362/C)|Codeforces||Codeforces Round #212 (Div. 2)|6|\n|<ul><li>- [ ] Done</li></ul>|213|[Oh Sweet Beaverette](http://codeforces.com/problemset/problem/331/A2)|Codeforces||ABBYY Cup 3.0 - Finals (online version)|6|\n|<ul><li>- [ ] Done</li></ul>|214|[Ciel and Gondolas](http://codeforces.com/problemset/problem/321/E)|Codeforces||Codeforces Round #190 (Div. 1)|6|\n|<ul><li>- [ ] Done</li></ul>|215|[Summer Homework](http://codeforces.com/problemset/problem/316/E1)|Codeforces||ABBYY Cup 3.0|6|\n|<ul><li>- [ ] Done</li></ul>|216|[Sereja and Subsequences](http://codeforces.com/problemset/problem/314/C)|Codeforces||Codeforces Round #187 (Div. 1) & Codeforces Round #187 (Div. 2)|6|\n|<ul><li>- [ ] Done</li></ul>|217|[Yaroslav and Divisors](http://codeforces.com/problemset/problem/301/D)|Codeforces||Codeforces Round #182 (Div. 1)|6|\n|<ul><li>- [ ] Done</li></ul>|218|[Cubes](http://codeforces.com/problemset/problem/520/D)|Codeforces||Codeforces Round #295 (Div. 2) & Codeforces Round #295 (Div. 1)|6|\n|<ul><li>- [ ] Done</li></ul>|219|[Vanya and Treasure](http://codeforces.com/problemset/problem/677/D)|Codeforces||Codeforces Round #355 (Div. 2)|6|\n|<ul><li>- [ ] Done</li></ul>|220|[Trains and Statistic](http://codeforces.com/problemset/problem/675/E)|Codeforces||Codeforces Round #353 (Div. 2)|6|\n|<ul><li>- [ ] Done</li></ul>|221|[Shortest Path](p?ID=294)|A2 Online Judge|||6|\n|<ul><li>- [ ] Done</li></ul>|222|[Mister B and PR Shifts](http://codeforces.com/problemset/problem/819/B)|Codeforces||Codeforces Round #421 (Div. 1) & Codeforces Round #421 (Div. 2)|6|\n|<ul><li>- [ ] Done</li></ul>|223|[Rooter's Song](http://codeforces.com/problemset/problem/848/B)|Codeforces||Codeforces Round #431 (Div. 1) & Codeforces Round #431 (Div. 2)|6|\n|<ul><li>- [ ] Done</li></ul>|224|[Leha and another game about graph](http://codeforces.com/problemset/problem/840/B)|Codeforces||Codeforces Round #429 (Div. 1) & Codeforces Round #429 (Div. 2)|6|\n|<ul><li>- [ ] Done</li></ul>|225|[Boredom](http://codeforces.com/problemset/problem/853/C)|Codeforces||Codeforces Round #433 (Div. 1, based on Olympiad of Metropolises) & Codeforces Round #433 (Div. 2, based on Olympiad of Metropolises)|6|\n|<ul><li>- [ ] Done</li></ul>|226|[Legacy](http://codeforces.com/problemset/problem/786/B)|Codeforces||Codeforces Round #406 (Div. 1) & Codeforces Round #406 (Div. 2)|6|\n|<ul><li>- [ ] Done</li></ul>|227|[Mike and Geometry Problem](http://codeforces.com/problemset/problem/689/E)|Codeforces||Codeforces Round #361 (Div. 2)|6|\n|<ul><li>- [ ] Done</li></ul>|228|[Mahmoud and a xor trip](http://codeforces.com/problemset/problem/766/E)|Codeforces||Codeforces Round #396 (Div. 2)|6|\n|<ul><li>- [ ] Done</li></ul>|229|[Little Elephant and Tree](http://codeforces.com/problemset/problem/258/E)|Codeforces||Codeforces Round #157 (Div. 1)|7|\n|<ul><li>- [ ] Done</li></ul>|230|[Blood Cousins Return](http://codeforces.com/problemset/problem/246/E)|Codeforces||Codeforces Round #151 (Div. 2)|7|\n|<ul><li>- [ ] Done</li></ul>|231|[Cactus](http://codeforces.com/problemset/problem/231/E)|Codeforces||Codeforces Round #143 (Div. 2)|7|\n|<ul><li>- [ ] Done</li></ul>|232|[Little Elephant and Inversions](http://codeforces.com/problemset/problem/220/E)|Codeforces||Codeforces Round #136 (Div. 1)|7|\n|<ul><li>- [ ] Done</li></ul>|233|[Little Elephant and Shifts](http://codeforces.com/problemset/problem/220/C)|Codeforces||Codeforces Round #136 (Div. 1) & Codeforces Round #136 (Div. 2)|7|\n|<ul><li>- [ ] Done</li></ul>|234|[Spider's Web](http://codeforces.com/problemset/problem/216/D)|Codeforces||Codeforces Round #133 (Div. 2)|7|\n|<ul><li>- [ ] Done</li></ul>|235|[Counter Attack](http://codeforces.com/problemset/problem/190/E)|Codeforces||Codeforces Round #120 (Div. 2)|7|\n|<ul><li>- [ ] Done</li></ul>|236|[Encrypting Messages](http://codeforces.com/problemset/problem/177/D2)|Codeforces||ABBYY Cup 2.0 - Easy|7|\n|<ul><li>- [ ] Done</li></ul>|237|[Range Increments](http://codeforces.com/problemset/problem/174/C)|Codeforces||VK Cup 2012 Round 3 (Unofficial Div. 2 Edition)|7|\n|<ul><li>- [ ] Done</li></ul>|238|[Beard Graph](http://codeforces.com/problemset/problem/165/D)|Codeforces||Codeforces Round #112 (Div. 2)|7|\n|<ul><li>- [ ] Done</li></ul>|239|[Zebra Tower](http://codeforces.com/problemset/problem/159/E)|Codeforces||VK Cup 2012 Qualification Round 2|7|\n|<ul><li>- [ ] Done</li></ul>|240|[Mushroom Gnomes - 2](http://codeforces.com/problemset/problem/138/C)|Codeforces||Codeforces Beta Round #99 (Div. 1) & Codeforces Beta Round #99 (Div. 2)|7|\n|<ul><li>- [ ] Done</li></ul>|241|[Last Chance](http://codeforces.com/problemset/problem/137/E)|Codeforces||Codeforces Beta Round #98 (Div. 2)|7|\n|<ul><li>- [ ] Done</li></ul>|242|[Lucky Array](http://codeforces.com/problemset/problem/121/E)|Codeforces||Codeforces Beta Round #91 (Div. 1 Only)|7|\n|<ul><li>- [ ] Done</li></ul>|243|[Ski Base](http://codeforces.com/problemset/problem/91/C)|Codeforces||Codeforces Beta Round #75 (Div. 1 Only) & Codeforces Beta Round #75 (Div. 2 Only)|7|\n|<ul><li>- [ ] Done</li></ul>|244|[Embassy Queue](http://codeforces.com/problemset/problem/85/B)|Codeforces||Yandex.Algorithm 2011 Round 1|7|\n|<ul><li>- [ ] Done</li></ul>|245|[General Mobilization](http://codeforces.com/problemset/problem/82/C)|Codeforces||Yandex.Algorithm 2011 Qualification 2|7|\n|<ul><li>- [ ] Done</li></ul>|246|[Optical Experiment](http://codeforces.com/problemset/problem/67/D)|Codeforces||Manthan 2011|7|\n|<ul><li>- [ ] Done</li></ul>|247|[Domino Principle](http://codeforces.com/problemset/problem/56/E)|Codeforces||Codeforces Beta Round #52 (Div. 2)|7|\n|<ul><li>- [ ] Done</li></ul>|248|[Corporation Mail](http://codeforces.com/problemset/problem/56/C)|Codeforces||Codeforces Beta Round #52 (Div. 2)|7|\n|<ul><li>- [ ] Done</li></ul>|249|[Comb](http://codeforces.com/problemset/problem/46/E)|Codeforces||School Personal Contest #2 (Winter Computer School 2010/11) - Codeforces Beta Round #43 (ACM-ICPC Rules)|7|\n|<ul><li>- [ ] Done</li></ul>|250|[Parking Lot](http://codeforces.com/problemset/problem/46/D)|Codeforces||School Personal Contest #2 (Winter Computer School 2010/11) - Codeforces Beta Round #43 (ACM-ICPC Rules)|7|\n|<ul><li>- [ ] Done</li></ul>|251|[Old Berland Language](http://codeforces.com/problemset/problem/37/C)|Codeforces||Codeforces Beta Round #37|7|\n|<ul><li>- [ ] Done</li></ul>|252|[Points](http://codeforces.com/problemset/problem/19/D)|Codeforces||Codeforces Beta Round #19|7|\n|<ul><li>- [ ] Done</li></ul>|253|[Ball](http://codeforces.com/problemset/problem/12/D)|Codeforces||Codeforces Beta Round #12 (Div 2 Only)|7|\n|<ul><li>- [ ] Done</li></ul>|254|[Bindian Signalizing](http://codeforces.com/problemset/problem/5/E)|Codeforces||Codeforces Beta Round #5|7|\n|<ul><li>- [ ] Done</li></ul>|255|[Beautiful Subarrays](http://codeforces.com/problemset/problem/665/E)|Codeforces||Educational Codeforces Round 12|7|\n|<ul><li>- [ ] Done</li></ul>|256|[Zip-line](http://codeforces.com/problemset/problem/650/D)|Codeforces||Codeforces Round #345 (Div. 1)|7|\n|<ul><li>- [ ] Done</li></ul>|257|[Hostname Aliases](http://codeforces.com/problemset/problem/644/C)|Codeforces||CROC 2016 - Qualification|7|\n|<ul><li>- [ ] Done</li></ul>|258|[Bear and Contribution](http://codeforces.com/problemset/problem/639/D)|Codeforces||VK Cup 2016 - Round 1|7|\n|<ul><li>- [ ] Done</li></ul>|259|[Product Sum](http://codeforces.com/problemset/problem/631/E)|Codeforces||Codeforces Round #344 (Div. 2)|7|\n|<ul><li>- [ ] Done</li></ul>|260|[Package Delivery](http://codeforces.com/problemset/problem/627/C)|Codeforces||8VC Venture Cup 2016 - Final Round|7|\n|<ul><li>- [ ] Done</li></ul>|261|[New Year and Three Musketeers](http://codeforces.com/problemset/problem/611/E)|Codeforces||Good Bye 2015|7|\n|<ul><li>- [ ] Done</li></ul>|262|[Vika and Segments](http://codeforces.com/problemset/problem/610/D)|Codeforces||Codeforces Round #337 (Div. 2)|7|\n|<ul><li>- [ ] Done</li></ul>|263|[Acyclic Organic Compounds](http://codeforces.com/problemset/problem/601/D)|Codeforces||Codeforces Round #333 (Div. 1)|7|\n|<ul><li>- [ ] Done</li></ul>|264|[Happy Tree Party](http://codeforces.com/problemset/problem/593/D)|Codeforces||Codeforces Round #329 (Div. 2)|7|\n|<ul><li>- [ ] Done</li></ul>|265|[Guess Your Way Out! II](http://codeforces.com/problemset/problem/558/D)|Codeforces||Codeforces Round #312 (Div. 2)|7|\n|<ul><li>- [ ] Done</li></ul>|266|[Ann and Half-Palindrome](http://codeforces.com/problemset/problem/557/E)|Codeforces||Codeforces Round #311 (Div. 2)|7|\n|<ul><li>- [ ] Done</li></ul>|267|[Rooks and Rectangles](http://codeforces.com/problemset/problem/524/E)|Codeforces||VK Cup 2015 - Round 1|7|\n|<ul><li>- [ ] Done</li></ul>|268|[Traffic Jams in the Land](http://codeforces.com/problemset/problem/498/D)|Codeforces||Codeforces Round #284 (Div. 1)|7|\n|<ul><li>- [ ] Done</li></ul>|269|[Treeland Tour](http://codeforces.com/problemset/problem/490/F)|Codeforces||Codeforces Round #279 (Div. 2)|7|\n|<ul><li>- [ ] Done</li></ul>|270|[Sign on Fence](http://codeforces.com/problemset/problem/484/E)|Codeforces||Codeforces Round #276 (Div. 1)|7|\n|<ul><li>- [ ] Done</li></ul>|271|[Sereja and Squares](http://codeforces.com/problemset/problem/425/D)|Codeforces||Codeforces Round #243 (Div. 1)|7|\n|<ul><li>- [ ] Done</li></ul>|272|[Sereja and Two Sequences](http://codeforces.com/problemset/problem/425/C)|Codeforces||Codeforces Round #243 (Div. 1) & Codeforces Round #243 (Div. 2)|7|\n|<ul><li>- [ ] Done</li></ul>|273|[Bug in Code](http://codeforces.com/problemset/problem/421/D)|Codeforces||Coder-Strike 2014 - Finals (online edition, Div. 2) & Coder-Strike 2014 - Finals (online edition, Div. 1) & Coder-Strike 2014 - Finals (online edition, Div. 2) & Coder-Strike 2014 - Finals (online edition, Div. 1)|7|\n|<ul><li>- [ ] Done</li></ul>|274|[Bug in Code](http://codeforces.com/problemset/problem/420/C)|Codeforces||Coder-Strike 2014 - Finals (online edition, Div. 2) & Coder-Strike 2014 - Finals (online edition, Div. 1) & Coder-Strike 2014 - Finals (online edition, Div. 2) & Coder-Strike 2014 - Finals (online edition, Div. 1)|7|\n|<ul><li>- [ ] Done</li></ul>|275|[Inna and Binary Logic](http://codeforces.com/problemset/problem/400/E)|Codeforces||Codeforces Round #234 (Div. 2)|7|\n|<ul><li>- [ ] Done</li></ul>|276|[George and Cards](http://codeforces.com/problemset/problem/387/E)|Codeforces||Codeforces Round #227 (Div. 2)|7|\n|<ul><li>- [ ] Done</li></ul>|277|[Inna and Sequence ](http://codeforces.com/problemset/problem/374/D)|Codeforces||Codeforces Round #220 (Div. 2)|7|\n|<ul><li>- [ ] Done</li></ul>|278|[Dima and Trap Graph](http://codeforces.com/problemset/problem/366/D)|Codeforces||Codeforces Round #214 (Div. 2)|7|\n|<ul><li>- [ ] Done</li></ul>|279|[Fools and Foolproof Roads](http://codeforces.com/problemset/problem/362/D)|Codeforces||Codeforces Round #212 (Div. 2)|7|\n|<ul><li>- [ ] Done</li></ul>|280|[Subset Sums](http://codeforces.com/problemset/problem/348/C)|Codeforces||Codeforces Round #202 (Div. 1) & Codeforces Round #202 (Div. 2)|7|\n|<ul><li>- [ ] Done</li></ul>|281|[Iahub and Xors](http://codeforces.com/problemset/problem/341/D)|Codeforces||Codeforces Round #198 (Div. 1)|7|\n|<ul><li>- [ ] Done</li></ul>|282|[Students' Revenge](http://codeforces.com/problemset/problem/332/C)|Codeforces||Codeforces Round #193 (Div. 2)|7|\n|<ul><li>- [ ] Done</li></ul>|283|[Cats Transport](http://codeforces.com/problemset/problem/311/B)|Codeforces||Codeforces Round #185 (Div. 1) & Codeforces Round #185 (Div. 2)|7|\n|<ul><li>- [ ] Done</li></ul>|284|[Little Girl and Problem on Trees](http://codeforces.com/problemset/problem/276/E)|Codeforces||Codeforces Round #169 (Div. 2)|7|\n|<ul><li>- [ ] Done</li></ul>|285|[Big Maximum Sum](http://codeforces.com/problemset/problem/75/D)|Codeforces||Codeforces Beta Round #67 (Div. 2)|7|\n|<ul><li>- [ ] Done</li></ul>|286|[Petya and File System](http://codeforces.com/problemset/problem/66/C)|Codeforces||Codeforces Beta Round #61 (Div. 2)|7|\n|<ul><li>- [ ] Done</li></ul>|287|[Ada and Mulberry](http://www.spoj.com/problems/ADABERRY/)|SPOJ|||7|\n|<ul><li>- [ ] Done</li></ul>|288|[Beer Machines](http://www.spoj.com/problems/STJEPAN/)|SPOJ|||7|\n|<ul><li>- [ ] Done</li></ul>|289|[Crayon](http://www.spoj.com/problems/CRAYON/)|SPOJ|||7|\n|<ul><li>- [ ] Done</li></ul>|290|[Till I Collapse](http://codeforces.com/problemset/problem/786/C)|Codeforces||Codeforces Round #406 (Div. 1) & Codeforces Round #406 (Div. 2)|7|\n|<ul><li>- [ ] Done</li></ul>|291|[Envy](http://codeforces.com/problemset/problem/891/C)|Codeforces||Codeforces Round #446 (Div. 1) & Codeforces Round #446 (Div. 2)|7|\n|<ul><li>- [ ] Done</li></ul>|292|[Alyona and towers](http://codeforces.com/problemset/problem/739/C)|Codeforces||Codeforces Round #381 (Div. 1) & Codeforces Round #381 (Div. 2)|7|\n|<ul><li>- [ ] Done</li></ul>|293|[Anton and Permutation](http://codeforces.com/problemset/problem/785/E)|Codeforces||Codeforces Round #404 (Div. 2)|7|\n|<ul><li>- [ ] Done</li></ul>|294|[Ralph And His Tour in Binary Country](http://codeforces.com/problemset/problem/894/D)|Codeforces||Codeforces Round #447 (Div. 2)|7|\n|<ul><li>- [ ] Done</li></ul>|295|[Maximum Questions](http://codeforces.com/problemset/problem/900/E)|Codeforces||Codeforces Round #450 (Div. 2)|7|\n|<ul><li>- [ ] Done</li></ul>|296|[The Untended Antiquity](http://codeforces.com/problemset/problem/869/E)|Codeforces||Codeforces Round #439 (Div. 2)|7|\n|<ul><li>- [ ] Done</li></ul>|297|[Garlands](http://codeforces.com/problemset/problem/707/E)|Codeforces||Codeforces Round #368 (Div. 2)|7|\n|<ul><li>- [ ] Done</li></ul>|298|[Working routine](http://codeforces.com/problemset/problem/706/E)|Codeforces||Codeforces Round #367 (Div. 2)|7|\n|<ul><li>- [ ] Done</li></ul>|299|[Lucky Arrays](http://codeforces.com/problemset/problem/256/E)|Codeforces||Codeforces Round #156 (Div. 1)|8|\n|<ul><li>- [ ] Done</li></ul>|300|[Printer](http://codeforces.com/problemset/problem/253/E)|Codeforces||Codeforces Round #154 (Div. 2)|8|\n|<ul><li>- [ ] Done</li></ul>|301|[TorCoder](http://codeforces.com/problemset/problem/240/F)|Codeforces||Codeforces Round #145 (Div. 1, ACM-ICPC Rules)|8|\n|<ul><li>- [ ] Done</li></ul>|302|[Anniversary](http://codeforces.com/problemset/problem/226/C)|Codeforces||Codeforces Round #140 (Div. 1) & Codeforces Round #140 (Div. 2)|8|\n|<ul><li>- [ ] Done</li></ul>|303|[Parking Lot](http://codeforces.com/problemset/problem/219/E)|Codeforces||Codeforces Round #135 (Div. 2)|8|\n|<ul><li>- [ ] Done</li></ul>|304|[Two Permutations](http://codeforces.com/problemset/problem/213/E)|Codeforces||Codeforces Round #131 (Div. 1)|8|\n|<ul><li>- [ ] Done</li></ul>|305|[Little Elephant and Strings](http://codeforces.com/problemset/problem/204/E)|Codeforces||Codeforces Round #129 (Div. 1)|8|\n|<ul><li>- [ ] Done</li></ul>|306|[Cinema](http://codeforces.com/problemset/problem/200/A)|Codeforces||Codeforces Round #126 (Div. 2)|8|\n|<ul><li>- [ ] Done</li></ul>|307|[Building Forest](http://codeforces.com/problemset/problem/195/E)|Codeforces||Codeforces Round #123 (Div. 2)|8|\n|<ul><li>- [ ] Done</li></ul>|308|[Thwarting Demonstrations](http://codeforces.com/problemset/problem/191/E)|Codeforces||Codeforces Round #121 (Div. 1)|8|\n|<ul><li>- [ ] Done</li></ul>|309|[Optimal Sum](http://codeforces.com/problemset/problem/182/C)|Codeforces||Codeforces Round #117 (Div. 2)|8|\n|<ul><li>- [ ] Done</li></ul>|310|[Archaeology](http://codeforces.com/problemset/problem/176/E)|Codeforces||Croc Champ 2012 - Round 2|8|\n|<ul><li>- [ ] Done</li></ul>|311|[e-Government](http://codeforces.com/problemset/problem/163/E)|Codeforces||VK Cup 2012 Round 2|8|\n|<ul><li>- [ ] Done</li></ul>|312|[Smart Cheater](http://codeforces.com/problemset/problem/150/C)|Codeforces||Codeforces Round #107 (Div. 1) & Codeforces Round #107 (Div. 2)|8|\n|<ul><li>- [ ] Done</li></ul>|313|[Competition](http://codeforces.com/problemset/problem/144/E)|Codeforces||Codeforces Round #103 (Div. 2)|8|\n|<ul><li>- [ ] Done</li></ul>|314|[Linear Kingdom Races](http://codeforces.com/problemset/problem/115/E)|Codeforces||Codeforces Beta Round #87 (Div. 1 Only)|8|\n|<ul><li>- [ ] Done</li></ul>|315|[Igloo Skyscraper](http://codeforces.com/problemset/problem/91/E)|Codeforces||Codeforces Beta Round #75 (Div. 1 Only)|8|\n|<ul><li>- [ ] Done</li></ul>|316|[Chip Play](http://codeforces.com/problemset/problem/89/C)|Codeforces||Codeforces Beta Round #74 (Div. 1 Only) & Codeforces Beta Round #74 (Div. 2 Only)|8|\n|<ul><li>- [ ] Done</li></ul>|317|[Tourist](http://codeforces.com/problemset/problem/76/F)|Codeforces||All-Ukrainian School Olympiad in Informatics|8|\n|<ul><li>- [ ] Done</li></ul>|318|[Professor's task](http://codeforces.com/problemset/problem/70/D)|Codeforces||Codeforces Beta Round #64|8|\n|<ul><li>- [ ] Done</li></ul>|319|[Lucky Tickets](http://codeforces.com/problemset/problem/70/C)|Codeforces||Codeforces Beta Round #64|8|\n|<ul><li>- [ ] Done</li></ul>|320|[Petya and Post](http://codeforces.com/problemset/problem/66/E)|Codeforces||Codeforces Beta Round #61 (Div. 2)|8|\n|<ul><li>- [ ] Done</li></ul>|321|[Dancing Lessons](http://codeforces.com/problemset/problem/45/C)|Codeforces||School Team Contest #3 (Winter Computer School 2010/11)|8|\n|<ul><li>- [ ] Done</li></ul>|322|[Queue](http://codeforces.com/problemset/problem/38/G)|Codeforces||School Personal Contest #1 (Winter Computer School 2010/11) - Codeforces Beta Round #38 (ACM-ICPC Rules)|8|\n|<ul><li>- [ ] Done</li></ul>|323|[Parade](http://codeforces.com/problemset/problem/35/E)|Codeforces||Codeforces Beta Round #35 (Div. 2)|8|\n|<ul><li>- [ ] Done</li></ul>|324|[Tricky and Clever Password](http://codeforces.com/problemset/problem/30/E)|Codeforces||Codeforces Beta Round #30 (Codeforces format)|8|\n|<ul><li>- [ ] Done</li></ul>|325|[Don't fear, DravDe is kind](http://codeforces.com/problemset/problem/28/D)|Codeforces||Codeforces Beta Round #28 (Codeforces format)|8|\n|<ul><li>- [ ] Done</li></ul>|326|[Alex and Complicated Task](http://codeforces.com/problemset/problem/467/E)|Codeforces||Codeforces Round #267 (Div. 2)|8|\n|<ul><li>- [ ] Done</li></ul>|327|[Bear and Bowling 4](http://codeforces.com/problemset/problem/660/F)|Codeforces||Educational Codeforces Round 11|8|\n|<ul><li>- [ ] Done</li></ul>|328|[Paper task](http://codeforces.com/problemset/problem/653/F)|Codeforces||IndiaHacks 2016 - Online Edition (Div. 1 + Div. 2)|8|\n|<ul><li>- [ ] Done</li></ul>|329|[Yash And Trees](http://codeforces.com/problemset/problem/633/G)|Codeforces||Manthan, Codefest 16|8|\n|<ul><li>- [ ] Done</li></ul>|330|[Startup Funding](http://codeforces.com/problemset/problem/633/E)|Codeforces||Manthan, Codefest 16|8|\n|<ul><li>- [ ] Done</li></ul>|331|[Zbazi in Zeydabad](http://codeforces.com/problemset/problem/628/E)|Codeforces||Educational Codeforces Round 8|8|\n|<ul><li>- [ ] Done</li></ul>|332|[Robot Arm](http://codeforces.com/problemset/problem/618/E)|Codeforces||Wunder Fund Round 2016 (Div. 1 + Div. 2 combined)|8|\n|<ul><li>- [ ] Done</li></ul>|333|[Alphabet Permutations](http://codeforces.com/problemset/problem/610/E)|Codeforces||Codeforces Round #337 (Div. 2)|8|\n|<ul><li>- [ ] Done</li></ul>|334|[Frogs and mosquitoes](http://codeforces.com/problemset/problem/609/F)|Codeforces||Educational Codeforces Round 3|8|\n|<ul><li>- [ ] Done</li></ul>|335|[Power Tree](http://codeforces.com/problemset/problem/607/D)|Codeforces||Codeforces Round #336 (Div. 1)|8|\n|<ul><li>- [ ] Done</li></ul>|336|[Board Game](http://codeforces.com/problemset/problem/605/D)|Codeforces||Codeforces Round #335 (Div. 1)|8|\n|<ul><li>- [ ] Done</li></ul>|337|[REQ](http://codeforces.com/problemset/problem/594/D)|Codeforces||Codeforces Round #330 (Div. 1)|8|\n|<ul><li>- [ ] Done</li></ul>|338|[Yura and Developers](http://codeforces.com/problemset/problem/549/F)|Codeforces||Looksery Cup 2015|8|\n|<ul><li>- [ ] Done</li></ul>|339|[Mike and Friends](http://codeforces.com/problemset/problem/547/E)|Codeforces||Codeforces Round #305 (Div. 1)|8|\n|<ul><li>- [ ] Done</li></ul>|340|[Place Your Ad Here](http://codeforces.com/problemset/problem/542/A)|Codeforces||VK Cup 2015 - Round 3 (unofficial online mirror, Div. 1 only)|8|\n|<ul><li>- [ ] Done</li></ul>|341|[Pudding Monsters](http://codeforces.com/problemset/problem/526/F)|Codeforces||ZeptoLab Code Rush 2015|8|\n|<ul><li>- [ ] Done</li></ul>|342|[Birthday](http://codeforces.com/problemset/problem/494/D)|Codeforces||Codeforces Round #282 (Div. 1)|8|\n|<ul><li>- [ ] Done</li></ul>|343|[Tourists](http://codeforces.com/problemset/problem/487/E)|Codeforces||Codeforces Round #278 (Div. 1)|8|\n|<ul><li>- [ ] Done</li></ul>|344|[Conveyor Belts](http://codeforces.com/problemset/problem/487/D)|Codeforces||Codeforces Round #278 (Div. 1)|8|\n|<ul><li>- [ ] Done</li></ul>|345|[Permutation](http://codeforces.com/problemset/problem/452/F)|Codeforces||MemSQL Start[c]UP 2.0 - Round 1|8|\n|<ul><li>- [ ] Done</li></ul>|346|[Three strings](http://codeforces.com/problemset/problem/452/E)|Codeforces||MemSQL Start[c]UP 2.0 - Round 1|8|\n|<ul><li>- [ ] Done</li></ul>|347|[Adam and Tree](http://codeforces.com/problemset/problem/442/D)|Codeforces||Codeforces Round #253 (Div. 1)|8|\n|<ul><li>- [ ] Done</li></ul>|348|[Cardboard Box](http://codeforces.com/problemset/problem/436/E)|Codeforces||Zepto Code Rush 2014|8|\n|<ul><li>- [ ] Done</li></ul>|349|[Biathlon Track](http://codeforces.com/problemset/problem/424/D)|Codeforces||Codeforces Round #242 (Div. 2)|8|\n|<ul><li>- [ ] Done</li></ul>|350|[Cup Trick](http://codeforces.com/problemset/problem/420/D)|Codeforces||Coder-Strike 2014 - Finals (online edition, Div. 1) & Coder-Strike 2014 - Finals (online edition, Div. 2)|8|\n|<ul><li>- [ ] Done</li></ul>|351|[Mashmokh and Water Tanks](http://codeforces.com/problemset/problem/414/D)|Codeforces||Codeforces Round #240 (Div. 1)|8|\n|<ul><li>- [ ] Done</li></ul>|352|[Instant Messanger](http://codeforces.com/problemset/problem/398/D)|Codeforces||Codeforces Round #233 (Div. 1)|8|\n|<ul><li>- [ ] Done</li></ul>|353|[Inna and Candy Boxes](http://codeforces.com/problemset/problem/390/C)|Codeforces||Codeforces Round #229 (Div. 2)|8|\n|<ul><li>- [ ] Done</li></ul>|354|[Developing Game](http://codeforces.com/problemset/problem/377/D)|Codeforces||Codeforces Round #222 (Div. 1)|8|\n|<ul><li>- [ ] Done</li></ul>|355|[Choosing Subtree is Fun](http://codeforces.com/problemset/problem/372/D)|Codeforces||Codeforces Round #219 (Div. 1)|8|\n|<ul><li>- [ ] Done</li></ul>|356|[Jeff and Removing Periods](http://codeforces.com/problemset/problem/351/D)|Codeforces||Codeforces Round #204 (Div. 1)|8|\n|<ul><li>- [ ] Done</li></ul>|357|[Optimize!](http://codeforces.com/problemset/problem/338/E)|Codeforces||Codeforces Round #196 (Div. 1)|8|\n|<ul><li>- [ ] Done</li></ul>|358|[Shave Beaver!](http://codeforces.com/problemset/problem/331/B2)|Codeforces||ABBYY Cup 3.0 - Finals (online version)|8|\n|<ul><li>- [ ] Done</li></ul>|359|[Summer Homework](http://codeforces.com/problemset/problem/316/E3)|Codeforces||ABBYY Cup 3.0|8|\n|<ul><li>- [ ] Done</li></ul>|360|[Sereja and Straight Lines](http://codeforces.com/problemset/problem/314/D)|Codeforces||Codeforces Round #187 (Div. 1)|8|\n|<ul><li>- [ ] Done</li></ul>|361|[Ilya and Two Numbers](http://codeforces.com/problemset/problem/313/E)|Codeforces||Codeforces Round #186 (Div. 2)|8|\n|<ul><li>- [ ] Done</li></ul>|362|[Interval Cubing](http://codeforces.com/problemset/problem/311/D)|Codeforces||Codeforces Round #185 (Div. 1)|8|\n|<ul><li>- [ ] Done</li></ul>|363|[Yaroslav and Points](http://codeforces.com/problemset/problem/295/E)|Codeforces||Codeforces Round #179 (Div. 1)|8|\n|<ul><li>- [ ] Done</li></ul>|364|[Close Vertices](http://codeforces.com/problemset/problem/293/E)|Codeforces||Croc Champ 2013 - Round 2|8|\n|<ul><li>- [ ] Done</li></ul>|365|[Cow Tennis Tournament](http://codeforces.com/problemset/problem/283/E)|Codeforces||Codeforces Round #174 (Div. 1)|8|\n|<ul><li>- [ ] Done</li></ul>|366|[k-Maximum Subsequence Sum](http://codeforces.com/problemset/problem/280/D)|Codeforces||Codeforces Round #172 (Div. 1)|8|\n|<ul><li>- [ ] Done</li></ul>|367|[More Queries to Array...](http://codeforces.com/problemset/problem/266/E)|Codeforces||Codeforces Round #163 (Div. 2)|8|\n|<ul><li>- [ ] Done</li></ul>|368|[Ultimate Weirdness of an Array](http://codeforces.com/problemset/problem/671/C)|Codeforces||Codeforces Round #352 (Div. 1) & Codeforces Round #352 (Div. 2)|8|\n|<ul><li>- [ ] Done</li></ul>|369|[Kay and Eternity](http://codeforces.com/problemset/problem/685/D)|Codeforces||Codeforces Round #359 (Div. 1)|8|\n|<ul><li>- [ ] Done</li></ul>|370|[Roads in Yusland](http://codeforces.com/problemset/problem/671/D)|Codeforces||Codeforces Round #352 (Div. 1)|8|\n|<ul><li>- [ ] Done</li></ul>|371|[Dividing Kingdom II](http://codeforces.com/problemset/problem/687/D)|Codeforces||Codeforces Round #360 (Div. 1)|8|\n|<ul><li>- [ ] Done</li></ul>|372|[Destiny](http://codeforces.com/problemset/problem/840/D)|Codeforces||Codeforces Round #429 (Div. 1)|8|\n|<ul><li>- [ ] Done</li></ul>|373|[Goodbye Souvenir](http://codeforces.com/problemset/problem/848/C)|Codeforces||Codeforces Round #431 (Div. 1) & Codeforces Round #431 (Div. 2)|8|\n|<ul><li>- [ ] Done</li></ul>|374|[Tournament](http://codeforces.com/problemset/problem/878/C)|Codeforces||Codeforces Round #443 (Div. 1) & Codeforces Round #443 (Div. 2)|8|\n|<ul><li>- [ ] Done</li></ul>|375|[Animals and Puzzle](http://codeforces.com/problemset/problem/713/D)|Codeforces||Codeforces Round #371 (Div. 1)|8|\n|<ul><li>- [ ] Done</li></ul>|376|[Arpa’s letter-marked tree and Mehrdad’s Dokhtar-kosh paths](http://codeforces.com/problemset/problem/741/D)|Codeforces||Codeforces Round #383 (Div. 1)|8|\n|<ul><li>- [ ] Done</li></ul>|377|[Vladik and Entertaining Flags](http://codeforces.com/problemset/problem/811/E)|Codeforces||Codeforces Round #416 (Div. 2)|8|\n|<ul><li>- [ ] Done</li></ul>|378|[Inversions After Shuffle](http://codeforces.com/problemset/problem/749/E)|Codeforces||Codeforces Round #388 (Div. 2)|8|\n|<ul><li>- [ ] Done</li></ul>|379|[Eyes Closed](http://codeforces.com/problemset/problem/895/E)|Codeforces||Codeforces Round #448 (Div. 2)|8|\n|<ul><li>- [ ] Done</li></ul>|380|[Memory and Casinos](http://codeforces.com/problemset/problem/712/E)|Codeforces||Codeforces Round #370 (Div. 2)|8|\n|<ul><li>- [ ] Done</li></ul>|381|[Donkey and Stars](http://codeforces.com/problemset/problem/249/D)|Codeforces||Codeforces Round #152 (Div. 1)|9|\n|<ul><li>- [ ] Done</li></ul>|382|[Friends](http://codeforces.com/problemset/problem/241/B)|Codeforces||Bayan 2012-2013 Elimination Round (ACM ICPC Rules, English statements)|9|\n|<ul><li>- [ ] Done</li></ul>|383|[Fence](http://codeforces.com/problemset/problem/232/D)|Codeforces||Codeforces Round #144 (Div. 1)|9|\n|<ul><li>- [ ] Done</li></ul>|384|[Zigzag](http://codeforces.com/problemset/problem/228/D)|Codeforces||Codeforces Round #141 (Div. 2)|9|\n|<ul><li>- [ ] Done</li></ul>|385|[Noble Knight's Path](http://codeforces.com/problemset/problem/226/E)|Codeforces||Codeforces Round #140 (Div. 1)|9|\n|<ul><li>- [ ] Done</li></ul>|386|[Alien DNA](http://codeforces.com/problemset/problem/217/E)|Codeforces||Codeforces Round #134 (Div. 1)|9|\n|<ul><li>- [ ] Done</li></ul>|387|[Cutting a Fence](http://codeforces.com/problemset/problem/212/D)|Codeforces||VK Cup 2012 Finals (unofficial online-version)|9|\n|<ul><li>- [ ] Done</li></ul>|388|[Gripping Story](http://codeforces.com/problemset/problem/198/E)|Codeforces||Codeforces Round #125 (Div. 1)|9|\n|<ul><li>- [ ] Done</li></ul>|389|[The Next Good String](http://codeforces.com/problemset/problem/196/D)|Codeforces||Codeforces Round #124 (Div. 1)|9|\n|<ul><li>- [ ] Done</li></ul>|390|[Two Segments](http://codeforces.com/problemset/problem/193/D)|Codeforces||Codeforces Round #122 (Div. 1)|9|\n|<ul><li>- [ ] Done</li></ul>|391|[BRT Contract ](http://codeforces.com/problemset/problem/187/D)|Codeforces||Codeforces Round #119 (Div. 1)|9|\n|<ul><li>- [ ] Done</li></ul>|392|[Camping Groups](http://codeforces.com/problemset/problem/173/E)|Codeforces||Croc Champ 2012 - Round 1|9|\n|<ul><li>- [ ] Done</li></ul>|393|[Buses and People](http://codeforces.com/problemset/problem/160/E)|Codeforces||Codeforces Round #111 (Div. 2)|9|\n|<ul><li>- [ ] Done</li></ul>|394|[Freezing with Style](http://codeforces.com/problemset/problem/150/E)|Codeforces||Codeforces Round #107 (Div. 1)|9|\n|<ul><li>- [ ] Done</li></ul>|395|[Lucky Pair](http://codeforces.com/problemset/problem/145/D)|Codeforces||Codeforces Round #104 (Div. 1)|9|\n|<ul><li>- [ ] Done</li></ul>|396|[Hanger](http://codeforces.com/problemset/problem/74/D)|Codeforces||Codeforces Beta Round #68|9|\n|<ul><li>- [ ] Done</li></ul>|397|[Half-decay tree](http://codeforces.com/problemset/problem/68/D)|Codeforces||Codeforces Beta Round #62|9|\n|<ul><li>- [ ] Done</li></ul>|398|[Cannon](http://codeforces.com/problemset/problem/47/E)|Codeforces||Codeforces Beta Round #44 (Div. 2)|9|\n|<ul><li>- [ ] Done</li></ul>|399|[Map](http://codeforces.com/problemset/problem/15/D)|Codeforces||Codeforces Beta Round #15|9|\n|<ul><li>- [ ] Done</li></ul>|400|[Clockwork Bomb](http://codeforces.com/problemset/problem/650/E)|Codeforces||Codeforces Round #345 (Div. 1)|9|\n|<ul><li>- [ ] Done</li></ul>|401|[Fibonacci-ish II](http://codeforces.com/problemset/problem/633/H)|Codeforces||Manthan, Codefest 16|9|\n|<ul><li>- [ ] Done</li></ul>|402|[Raffles](http://codeforces.com/problemset/problem/626/G)|Codeforces||8VC Venture Cup 2016 - Elimination Round|9|\n|<ul><li>- [ ] Done</li></ul>|403|[Xors on Segments](http://codeforces.com/problemset/problem/620/F)|Codeforces||Educational Codeforces Round 6|9|\n|<ul><li>- [ ] Done</li></ul>|404|[Pastoral Oddities](http://codeforces.com/problemset/problem/603/E)|Codeforces||Codeforces Round #334 (Div. 1)|9|\n|<ul><li>- [ ] Done</li></ul>|405|[A Museum Robbery](http://codeforces.com/problemset/problem/601/E)|Codeforces||Codeforces Round #333 (Div. 1)|9|\n|<ul><li>- [ ] Done</li></ul>|406|[Polycarp's Masterpiece](http://codeforces.com/problemset/problem/589/C)|Codeforces||2015-2016 ACM-ICPC, NEERC, Southern Subregional Contest (Online Mirror, ACM-ICPC Rules, Teams Preferred)|9|\n|<ul><li>- [ ] Done</li></ul>|407|[Duff as a Queen](http://codeforces.com/problemset/problem/587/E)|Codeforces||Codeforces Round #326 (Div. 1)|9|\n|<ul><li>- [ ] Done</li></ul>|408|[Bear and Cavalry](http://codeforces.com/problemset/problem/573/D)|Codeforces||Codeforces Round #318 [RussianCodeCup Thanks-Round] (Div. 1)|9|\n|<ul><li>- [ ] Done</li></ul>|409|[Tavas on the Path](http://codeforces.com/problemset/problem/536/E)|Codeforces||Codeforces Round #299 (Div. 1)|9|\n|<ul><li>- [ ] Done</li></ul>|410|[And Yet Another Bracket Sequence](http://codeforces.com/problemset/problem/524/F)|Codeforces||VK Cup 2015 - Round 1|9|\n|<ul><li>- [ ] Done</li></ul>|411|[Constrained Tree](http://codeforces.com/problemset/problem/513/D2)|Codeforces||Rockethon 2015|9|\n|<ul><li>- [ ] Done</li></ul>|412|[Parking Lot](http://codeforces.com/problemset/problem/480/E)|Codeforces||Codeforces Round #274 (Div. 1)|9|\n|<ul><li>- [ ] Done</li></ul>|413|[Design Tutorial: Increase the Constraints](http://codeforces.com/problemset/problem/472/G)|Codeforces||Codeforces Round #270|9|\n|<ul><li>- [ ] Done</li></ul>|414|[The Classic Problem](http://codeforces.com/problemset/problem/464/E)|Codeforces||Codeforces Round #265 (Div. 1)|9|\n|<ul><li>- [ ] Done</li></ul>|415|[Function](http://codeforces.com/problemset/problem/455/E)|Codeforces||Codeforces Round #260 (Div. 1)|9|\n|<ul><li>- [ ] Done</li></ul>|416|[Little Pony and Lord Tirek](http://codeforces.com/problemset/problem/453/E)|Codeforces||Codeforces Round #259 (Div. 1)|9|\n|<ul><li>- [ ] Done</li></ul>|417|[Chemistry Experiment](http://codeforces.com/problemset/problem/431/E)|Codeforces||Codeforces Round #247 (Div. 2)|9|\n|<ul><li>- [ ] Done</li></ul>|418|[Big Problems for Organizers](http://codeforces.com/problemset/problem/418/D)|Codeforces||RCC 2014 Warmup (Div. 1)|9|\n|<ul><li>- [ ] Done</li></ul>|419|[Maze 2D](http://codeforces.com/problemset/problem/413/E)|Codeforces||Coder-Strike 2014 - Round 2|9|\n|<ul><li>- [ ] Done</li></ul>|420|[k-d-sequence](http://codeforces.com/problemset/problem/407/E)|Codeforces||Codeforces Round #239 (Div. 1)|9|\n|<ul><li>- [ ] Done</li></ul>|421|[Sereja and Dividing](http://codeforces.com/problemset/problem/380/E)|Codeforces||Codeforces Round #223 (Div. 1)|9|\n|<ul><li>- [ ] Done</li></ul>|422|[Two permutations](http://codeforces.com/problemset/problem/323/C)|Codeforces||Testing Round #7|9|\n|<ul><li>- [ ] Done</li></ul>|423|[Ping-Pong](http://codeforces.com/problemset/problem/319/E)|Codeforces||Codeforces Round #189 (Div. 1)|9|\n|<ul><li>- [ ] Done</li></ul>|424|[Summer Homework](http://codeforces.com/problemset/problem/316/E2)|Codeforces||ABBYY Cup 3.0|9|\n|<ul><li>- [ ] Done</li></ul>|425|[Fetch the Treasure](http://codeforces.com/problemset/problem/311/C)|Codeforces||Codeforces Round #185 (Div. 1) & Codeforces Round #185 (Div. 2)|9|\n|<ul><li>- [ ] Done</li></ul>|426|[Optimizer](http://codeforces.com/problemset/problem/306/B)|Codeforces||Testing Round #6|9|\n|<ul><li>- [ ] Done</li></ul>|427|[Tourists](http://codeforces.com/problemset/problem/286/D)|Codeforces||Codeforces Round #176 (Div. 1)|9|\n|<ul><li>- [ ] Done</li></ul>|428|[Mirror Room](http://codeforces.com/problemset/problem/274/E)|Codeforces||Codeforces Round #168 (Div. 1)|9|\n|<ul><li>- [ ] Done</li></ul>|429|[Maximum Waterfall](http://codeforces.com/problemset/problem/269/D)|Codeforces||Codeforces Round #165 (Div. 1)|9|\n|<ul><li>- [ ] Done</li></ul>|430|[Roadside Trees](http://codeforces.com/problemset/problem/264/E)|Codeforces||Codeforces Round #162 (Div. 1)|9|\n|<ul><li>- [ ] Done</li></ul>|431|[Rhombus](http://codeforces.com/problemset/problem/263/E)|Codeforces||Codeforces Round #161 (Div. 2)|9|\n|<ul><li>- [ ] Done</li></ul>|432|[Dividing Kingdom](http://codeforces.com/problemset/problem/260/E)|Codeforces||Codeforces Round #158 (Div. 2)|9|\n|<ul><li>- [ ] Done</li></ul>|433|[Greedy Elevator](http://codeforces.com/problemset/problem/257/E)|Codeforces||Codeforces Round #159 (Div. 2)|9|\n|<ul><li>- [ ] Done</li></ul>|434|[Forensic Examination](http://codeforces.com/problemset/problem/666/E)|Codeforces||Codeforces Round #349 (Div. 1)|9|\n|<ul><li>- [ ] Done</li></ul>|435|[Bear and Bad Powers of 42](http://codeforces.com/problemset/problem/679/E)|Codeforces||Codeforces Round #356 (Div. 1)|9|\n|<ul><li>- [ ] Done</li></ul>|436|[Hitchhiking in the Baltic States](http://codeforces.com/problemset/problem/809/D)|Codeforces||Codeforces Round #415 (Div. 1)|9|\n|<ul><li>- [ ] Done</li></ul>|437|[Karen and Cards](http://codeforces.com/problemset/problem/815/D)|Codeforces||Codeforces Round #419 (Div. 1)|9|\n|<ul><li>- [ ] Done</li></ul>|438|[Arkady and a Nobody-men](http://codeforces.com/problemset/problem/860/E)|Codeforces||Codeforces Round #434 (Div. 1, based on Technocup 2018 Elimination Round 1)|9|\n|<ul><li>- [ ] Done</li></ul>|439|[Timofey and a flat tree](http://codeforces.com/problemset/problem/763/D)|Codeforces||Codeforces Round #395 (Div. 1)|9|\n|<ul><li>- [ ] Done</li></ul>|440|[Huffman Coding on Segment](http://codeforces.com/problemset/problem/700/D)|Codeforces||Codeforces Round #364 (Div. 1)|9|\n|<ul><li>- [ ] Done</li></ul>|441|[Welcome home, Chtholly](http://codeforces.com/problemset/problem/896/E)|Codeforces||Codeforces Round #449 (Div. 1)|9|\n|<ul><li>- [ ] Done</li></ul>|442|[Mike and code of a permutation](http://codeforces.com/problemset/problem/798/E)|Codeforces||Codeforces Round #410 (Div. 2)|9|\n|<ul><li>- [ ] Done</li></ul>|443|[Matrix](http://codeforces.com/problemset/problem/243/E)|Codeforces||Codeforces Round #150 (Div. 1)|10|\n|<ul><li>- [ ] Done</li></ul>|444|[Cubes](http://codeforces.com/problemset/problem/243/D)|Codeforces||Codeforces Round #150 (Div. 1)|10|\n|<ul><li>- [ ] Done</li></ul>|445|[Tape Programming](http://codeforces.com/problemset/problem/238/D)|Codeforces||Codeforces Round #148 (Div. 1)|10|\n|<ul><li>- [ ] Done</li></ul>|446|[Heaven Tour](http://codeforces.com/problemset/problem/187/E)|Codeforces||Codeforces Round #119 (Div. 1)|10|\n|<ul><li>- [ ] Done</li></ul>|447|[Soap Time! - 2](http://codeforces.com/problemset/problem/185/E)|Codeforces||Codeforces Round #118 (Div. 1)|10|\n|<ul><li>- [ ] Done</li></ul>|448|[Gnomes of Might and Magic](http://codeforces.com/problemset/problem/175/F)|Codeforces||Codeforces Round #115|10|\n|<ul><li>- [ ] Done</li></ul>|449|[Wizards and Roads](http://codeforces.com/problemset/problem/167/D)|Codeforces||Codeforces Round #114 (Div. 1)|10|\n|<ul><li>- [ ] Done</li></ul>|450|[Tree or not Tree](http://codeforces.com/problemset/problem/117/E)|Codeforces||Codeforces Beta Round #88|10|\n|<ul><li>- [ ] Done</li></ul>|451|[Name the album](http://codeforces.com/problemset/problem/100/G)|Codeforces||Unknown Language Round #3|10|\n|<ul><li>- [ ] Done</li></ul>|452|[Shooting Gallery](http://codeforces.com/problemset/problem/44/G)|Codeforces||School Team Contest #2 (Winter Computer School 2010/11)|10|\n|<ul><li>- [ ] Done</li></ul>|453|[Stack](http://codeforces.com/problemset/problem/188/H)|Codeforces||Surprise Language Round #6|10|\n|<ul><li>- [ ] Done</li></ul>|454|[MUH and Lots and Lots of Segments](http://codeforces.com/problemset/problem/471/E)|Codeforces||Codeforces Round #269 (Div. 2)|10|\n|<ul><li>- [ ] Done</li></ul>|455|[Bear and Chemistry](http://codeforces.com/problemset/problem/639/F)|Codeforces||VK Cup 2016 - Round 1|10|\n|<ul><li>- [ ] Done</li></ul>|456|[Frog Fights](http://codeforces.com/problemset/problem/625/E)|Codeforces||Codeforces Round #342 (Div. 2)|10|\n|<ul><li>- [ ] Done</li></ul>|457|[Duff is Mad](http://codeforces.com/problemset/problem/587/F)|Codeforces||Codeforces Round #326 (Div. 1)|10|\n|<ul><li>- [ ] Done</li></ul>|458|[Painting Edges](http://codeforces.com/problemset/problem/576/E)|Codeforces||Codeforces Round #319 (Div. 1)|10|\n|<ul><li>- [ ] Done</li></ul>|459|[Robots protection](http://codeforces.com/problemset/problem/575/I)|Codeforces||Bubble Cup 8 - Finals [Online Mirror]|10|\n|<ul><li>- [ ] Done</li></ul>|460|[Campus](http://codeforces.com/problemset/problem/571/D)|Codeforces||Codeforces Round #317 [AimFund Thanks-Round] (Div. 1)|10|\n|<ul><li>- [ ] Done</li></ul>|461|[Longest Increasing Subsequence](http://codeforces.com/problemset/problem/568/E)|Codeforces||Codeforces Round #315 (Div. 1)|10|\n|<ul><li>- [ ] Done</li></ul>|462|[Listening to Music](http://codeforces.com/problemset/problem/543/E)|Codeforces||Codeforces Round #302 (Div. 1)|10|\n|<ul><li>- [ ] Done</li></ul>|463|[Duck Hunt](http://codeforces.com/problemset/problem/542/B)|Codeforces||VK Cup 2015 - Round 3 (unofficial online mirror, Div. 1 only)|10|\n|<ul><li>- [ ] Done</li></ul>|464|[Summer Dichotomy](http://codeforces.com/problemset/problem/538/H)|Codeforces||Codeforces Round #300|10|\n|<ul><li>- [ ] Done</li></ul>|465|[Landmarks](http://codeforces.com/problemset/problem/533/D)|Codeforces||VK Cup 2015 - Round 2 (unofficial online mirror, Div. 1 only)|10|\n|<ul><li>- [ ] Done</li></ul>|466|[Berland Miners](http://codeforces.com/problemset/problem/533/A)|Codeforces||VK Cup 2015 - Round 2 (unofficial online mirror, Div. 1 only)|10|\n|<ul><li>- [ ] Done</li></ul>|467|[ELCA](http://codeforces.com/problemset/problem/482/E)|Codeforces||Codeforces Round #275 (Div. 1)|10|\n|<ul><li>- [ ] Done</li></ul>|468|[Dreamoon and Notepad](http://codeforces.com/problemset/problem/477/E)|Codeforces||Codeforces Round #272 (Div. 1)|10|\n|<ul><li>- [ ] Done</li></ul>|469|[Meta-universe](http://codeforces.com/problemset/problem/475/F)|Codeforces||Bayan 2015 Contest Warm Up|10|\n|<ul><li>- [ ] Done</li></ul>|470|[Banners](http://codeforces.com/problemset/problem/436/F)|Codeforces||Zepto Code Rush 2014|10|\n|<ul><li>- [ ] Done</li></ul>|471|[Tricky Password](http://codeforces.com/problemset/problem/418/E)|Codeforces||RCC 2014 Warmup (Div. 1)|10|\n|<ul><li>- [ ] Done</li></ul>|472|[Mashmokh's Designed Problem](http://codeforces.com/problemset/problem/414/E)|Codeforces||Codeforces Round #240 (Div. 1)|10|\n|<ul><li>- [ ] Done</li></ul>|473|[Two Rooted Trees](http://codeforces.com/problemset/problem/403/E)|Codeforces||Codeforces Round #236 (Div. 1)|10|\n|<ul><li>- [ ] Done</li></ul>|474|[Three Arrays](http://codeforces.com/problemset/problem/392/D)|Codeforces||Codeforces Round #230 (Div. 1)|10|\n|<ul><li>- [ ] Done</li></ul>|475|[Supercollider](http://codeforces.com/problemset/problem/391/D2)|Codeforces||Rockethon 2014|10|\n|<ul><li>- [ ] Done</li></ul>|476|[Inna and Babies](http://codeforces.com/problemset/problem/374/E)|Codeforces||Codeforces Round #220 (Div. 2)|10|\n|<ul><li>- [ ] Done</li></ul>|477|[Two Circles](http://codeforces.com/problemset/problem/363/E)|Codeforces||Codeforces Round #211 (Div. 2)|10|\n|<ul><li>- [ ] Done</li></ul>|478|[Escaping on Beaveractor](http://codeforces.com/problemset/problem/331/D3)|Codeforces||ABBYY Cup 3.0 - Finals (online version)|10|\n|<ul><li>- [ ] Done</li></ul>|479|[Mystic Carvings](http://codeforces.com/problemset/problem/297/E)|Codeforces||Codeforces Round #180 (Div. 1)|10|\n|<ul><li>- [ ] Done</li></ul>|480|[Sequence Transformation](http://codeforces.com/problemset/problem/280/E)|Codeforces||Codeforces Round #172 (Div. 1)|10|\n|<ul><li>- [ ] Done</li></ul>|481|[Game with Two Trees](http://codeforces.com/problemset/problem/207/C3)|Codeforces||Abbyy Cup 2.0 - Final (unofficial)|10|\n|<ul><li>- [ ] Done</li></ul>|482|[Organizing a Race](http://codeforces.com/problemset/problem/671/E)|Codeforces||Codeforces Round #352 (Div. 1)|10|\n|<ul><li>- [ ] Done</li></ul>|483|[New task](http://codeforces.com/problemset/problem/788/E)|Codeforces||Codeforces Round #407 (Div. 1)|10|\n|<ul><li>- [ ] Done</li></ul>|484|[Red-Black Cobweb](http://codeforces.com/problemset/problem/833/D)|Codeforces||Codeforces Round #426 (Div. 1)|10|\n|<ul><li>- [ ] Done</li></ul>|485|[ALT](http://codeforces.com/problemset/problem/786/E)|Codeforces||Codeforces Round #406 (Div. 1)|10|\n|<ul><li>- [ ] Done</li></ul>|486|[Rap God](http://codeforces.com/problemset/problem/786/D)|Codeforces||Codeforces Round #406 (Div. 1)|10|\n|<ul><li>- [ ] Done</li></ul>|487|[Arpa’s abnormal DNA and Mehrdad’s deep interest](http://codeforces.com/problemset/problem/741/E)|Codeforces||Codeforces Round #383 (Div. 1)|10|\n|<ul><li>- [ ] Done</li></ul>|488|[Lada Malina](http://codeforces.com/problemset/problem/853/E)|Codeforces||Codeforces Round #433 (Div. 1, based on Olympiad of Metropolises)|10|\n|<ul><li>- [ ] Done</li></ul>|489|[Caramel Clouds](http://codeforces.com/problemset/problem/833/E)|Codeforces||Codeforces Round #426 (Div. 1)|10|\n"
  },
  {
    "path": "categories/008. Codeforces_Div._2_-_A_Problems/README.md",
    "content": "# 008. Codeforces_Div._2_-_A_Problems\n\n\n| Checkbox | ID | Problem Name|Online Judge|Year|Contest|Difficulty Level|\n|:---:|:---:|:---:|:---:|:---:|:---:|:---:|\n|<ul><li>- [ ] Done</li></ul>|1|[Theatre Square](http://codeforces.com/problemset/problem/1/A)|Codeforces||Codeforces Beta Round #1|1|\n|<ul><li>- [ ] Done</li></ul>|2|[Winner](http://codeforces.com/problemset/problem/2/A)|Codeforces||Codeforces Beta Round #2|1|\n|<ul><li>- [ ] Done</li></ul>|3|[Shortest path of the king](http://codeforces.com/problemset/problem/3/A)|Codeforces||Codeforces Beta Round #3|1|\n|<ul><li>- [ ] Done</li></ul>|4|[Watermelon](http://codeforces.com/problemset/problem/4/A)|Codeforces||Codeforces Beta Round #4 (Div. 2 Only)|1|\n|<ul><li>- [ ] Done</li></ul>|5|[Triangle](http://codeforces.com/problemset/problem/6/A)|Codeforces||Codeforces Beta Round #6 (Div. 2 Only)|1|\n|<ul><li>- [ ] Done</li></ul>|6|[Die Roll](http://codeforces.com/problemset/problem/9/A)|Codeforces||Codeforces Beta Round #9 (Div. 2 Only)|1|\n|<ul><li>- [ ] Done</li></ul>|7|[IQ test](http://codeforces.com/problemset/problem/25/A)|Codeforces||Codeforces Beta Round #25 (Div. 2 Only)|1|\n|<ul><li>- [ ] Done</li></ul>|8|[Almost Prime](http://codeforces.com/problemset/problem/26/A)|Codeforces||Codeforces Beta Round #26 (Codeforces format)|1|\n|<ul><li>- [ ] Done</li></ul>|9|[Reconnaissance 2](http://codeforces.com/problemset/problem/34/A)|Codeforces||Codeforces Beta Round #34 (Div. 2)|1|\n|<ul><li>- [ ] Done</li></ul>|10|[Towers](http://codeforces.com/problemset/problem/37/A)|Codeforces||Codeforces Beta Round #37|1|\n|<ul><li>- [ ] Done</li></ul>|11|[Army](http://codeforces.com/problemset/problem/38/A)|Codeforces||School Personal Contest #1 (Winter Computer School 2010/11) - Codeforces Beta Round #38 (ACM-ICPC Rules)|1|\n|<ul><li>- [ ] Done</li></ul>|12|[Translation](http://codeforces.com/problemset/problem/41/A)|Codeforces||Codeforces Beta Round #40 (Div. 2)|1|\n|<ul><li>- [ ] Done</li></ul>|13|[Football](http://codeforces.com/problemset/problem/43/A)|Codeforces||Codeforces Beta Round #42 (Div. 2)|1|\n|<ul><li>- [ ] Done</li></ul>|14|[Domino piling](http://codeforces.com/problemset/problem/50/A)|Codeforces||Codeforces Beta Round #47|1|\n|<ul><li>- [ ] Done</li></ul>|15|[Chat room](http://codeforces.com/problemset/problem/58/A)|Codeforces||Codeforces Beta Round #54 (Div. 2)|1|\n|<ul><li>- [ ] Done</li></ul>|16|[Word](http://codeforces.com/problemset/problem/59/A)|Codeforces||Codeforces Beta Round #55 (Div. 2)|1|\n|<ul><li>- [ ] Done</li></ul>|17|[Ultra-Fast Mathematician](http://codeforces.com/problemset/problem/61/A)|Codeforces||Codeforces Beta Round #57 (Div. 2)|1|\n|<ul><li>- [ ] Done</li></ul>|18|[Young Physicist](http://codeforces.com/problemset/problem/69/A)|Codeforces||Codeforces Beta Round #63 (Div. 2)|1|\n|<ul><li>- [ ] Done</li></ul>|19|[Way Too Long Words](http://codeforces.com/problemset/problem/71/A)|Codeforces||Codeforces Beta Round #65 (Div. 2)|1|\n|<ul><li>- [ ] Done</li></ul>|20|[Life Without Zeros](http://codeforces.com/problemset/problem/75/A)|Codeforces||Codeforces Beta Round #67 (Div. 2)|1|\n|<ul><li>- [ ] Done</li></ul>|21|[Panoramix's Prediction](http://codeforces.com/problemset/problem/80/A)|Codeforces||Codeforces Beta Round #69 (Div. 2 Only)|1|\n|<ul><li>- [ ] Done</li></ul>|22|[Toy Army](http://codeforces.com/problemset/problem/84/A)|Codeforces||Codeforces Beta Round #72 (Div. 2 Only)|1|\n|<ul><li>- [ ] Done</li></ul>|23|[Chips](http://codeforces.com/problemset/problem/92/A)|Codeforces||Codeforces Beta Round #75 (Div. 2 Only)|1|\n|<ul><li>- [ ] Done</li></ul>|24|[Football](http://codeforces.com/problemset/problem/96/A)|Codeforces||Codeforces Beta Round #77 (Div. 2 Only)|1|\n|<ul><li>- [ ] Done</li></ul>|25|[Nearly Lucky Number](http://codeforces.com/problemset/problem/110/A)|Codeforces||Codeforces Beta Round #84 (Div. 2 Only)|1|\n|<ul><li>- [ ] Done</li></ul>|26|[Petya and Strings](http://codeforces.com/problemset/problem/112/A)|Codeforces||Codeforces Beta Round #85 (Div. 2 Only)|1|\n|<ul><li>- [ ] Done</li></ul>|27|[Cifera](http://codeforces.com/problemset/problem/114/A)|Codeforces||Codeforces Beta Round #86 (Div. 2 Only)|1|\n|<ul><li>- [ ] Done</li></ul>|28|[Tram](http://codeforces.com/problemset/problem/116/A)|Codeforces||Codeforces Beta Round #87 (Div. 2 Only)|1|\n|<ul><li>- [ ] Done</li></ul>|29|[String Task](http://codeforces.com/problemset/problem/118/A)|Codeforces||Codeforces Beta Round #89 (Div. 2)|1|\n|<ul><li>- [ ] Done</li></ul>|30|[Epic Game](http://codeforces.com/problemset/problem/119/A)|Codeforces||Codeforces Beta Round #90|1|\n|<ul><li>- [ ] Done</li></ul>|31|[Lucky Division](http://codeforces.com/problemset/problem/122/A)|Codeforces||Codeforces Beta Round #91 (Div. 2 Only)|1|\n|<ul><li>- [ ] Done</li></ul>|32|[The number of positions](http://codeforces.com/problemset/problem/124/A)|Codeforces||Codeforces Beta Round #92 (Div. 2 Only)|1|\n|<ul><li>- [ ] Done</li></ul>|33|[Cookies](http://codeforces.com/problemset/problem/129/A)|Codeforces||Codeforces Beta Round #94 (Div. 2 Only)|1|\n|<ul><li>- [ ] Done</li></ul>|34|[cAPS lOCK](http://codeforces.com/problemset/problem/131/A)|Codeforces||Codeforces Beta Round #95 (Div. 2)|1|\n|<ul><li>- [ ] Done</li></ul>|35|[HQ9+](http://codeforces.com/problemset/problem/133/A)|Codeforces||Codeforces Beta Round #96 (Div. 2)|1|\n|<ul><li>- [ ] Done</li></ul>|36|[Presents](http://codeforces.com/problemset/problem/136/A)|Codeforces||Codeforces Beta Round #97 (Div. 2)|1|\n|<ul><li>- [ ] Done</li></ul>|37|[Petr and Book](http://codeforces.com/problemset/problem/139/A)|Codeforces||Codeforces Beta Round #99 (Div. 2)|1|\n|<ul><li>- [ ] Done</li></ul>|38|[Amusing Joke](http://codeforces.com/problemset/problem/141/A)|Codeforces||Codeforces Round #101 (Div. 2)|1|\n|<ul><li>- [ ] Done</li></ul>|39|[Arrival of the General](http://codeforces.com/problemset/problem/144/A)|Codeforces||Codeforces Round #103 (Div. 2)|1|\n|<ul><li>- [ ] Done</li></ul>|40|[Lucky Ticket](http://codeforces.com/problemset/problem/146/A)|Codeforces||Codeforces Round #104 (Div. 2)|1|\n|<ul><li>- [ ] Done</li></ul>|41|[Insomnia cure](http://codeforces.com/problemset/problem/148/A)|Codeforces||Codeforces Round #105 (Div. 2)|1|\n|<ul><li>- [ ] Done</li></ul>|42|[Business trip](http://codeforces.com/problemset/problem/149/A)|Codeforces||Codeforces Round #106 (Div. 2)|1|\n|<ul><li>- [ ] Done</li></ul>|43|[Soft Drinking](http://codeforces.com/problemset/problem/151/A)|Codeforces||Codeforces Round #107 (Div. 2)|1|\n|<ul><li>- [ ] Done</li></ul>|44|[Marks](http://codeforces.com/problemset/problem/152/A)|Codeforces||Codeforces Round #108 (Div. 2)|1|\n|<ul><li>- [ ] Done</li></ul>|45|[I_love_\\%username\\%](http://codeforces.com/problemset/problem/155/A)|Codeforces||Codeforces Round #109 (Div. 2)|1|\n|<ul><li>- [ ] Done</li></ul>|46|[Twins](http://codeforces.com/problemset/problem/160/A)|Codeforces||Codeforces Round #111 (Div. 2)|1|\n|<ul><li>- [ ] Done</li></ul>|47|[Supercentral Point](http://codeforces.com/problemset/problem/165/A)|Codeforces||Codeforces Round #112 (Div. 2)|1|\n|<ul><li>- [ ] Done</li></ul>|48|[Cut Ribbon](http://codeforces.com/problemset/problem/189/A)|Codeforces||Codeforces Round #119 (Div. 2)|1|\n|<ul><li>- [ ] Done</li></ul>|49|[Hexadecimal's theorem](http://codeforces.com/problemset/problem/199/A)|Codeforces||Codeforces Round #125 (Div. 2)|1|\n|<ul><li>- [ ] Done</li></ul>|50|[Dubstep](http://codeforces.com/problemset/problem/208/A)|Codeforces||Codeforces Round #130 (Div. 2)|1|\n|<ul><li>- [ ] Done</li></ul>|51|[System of Equations](http://codeforces.com/problemset/problem/214/A)|Codeforces||Codeforces Round #131 (Div. 2)|1|\n|<ul><li>- [ ] Done</li></ul>|52|[k-String](http://codeforces.com/problemset/problem/219/A)|Codeforces||Codeforces Round #135 (Div. 2)|1|\n|<ul><li>- [ ] Done</li></ul>|53|[Parallelepiped](http://codeforces.com/problemset/problem/224/A)|Codeforces||Codeforces Round #138 (Div. 2)|1|\n|<ul><li>- [ ] Done</li></ul>|54|[Is your horseshoe on the other hoof?](http://codeforces.com/problemset/problem/228/A)|Codeforces||Codeforces Round #141 (Div. 2)|1|\n|<ul><li>- [ ] Done</li></ul>|55|[Dragons](http://codeforces.com/problemset/problem/230/A)|Codeforces||Codeforces Round #142 (Div. 2)|1|\n|<ul><li>- [ ] Done</li></ul>|56|[Team](http://codeforces.com/problemset/problem/231/A)|Codeforces||Codeforces Round #143 (Div. 2)|1|\n|<ul><li>- [ ] Done</li></ul>|57|[Perfect Permutation](http://codeforces.com/problemset/problem/233/A)|Codeforces||Codeforces Round #144 (Div. 2)|1|\n|<ul><li>- [ ] Done</li></ul>|58|[Boy or Girl](http://codeforces.com/problemset/problem/236/A)|Codeforces||Codeforces Round #146 (Div. 2)|1|\n|<ul><li>- [ ] Done</li></ul>|59|[Free Cash](http://codeforces.com/problemset/problem/237/A)|Codeforces||Codeforces Round #147 (Div. 2)|1|\n|<ul><li>- [ ] Done</li></ul>|60|[Greg's Workout](http://codeforces.com/problemset/problem/255/A)|Codeforces||Codeforces Round #156 (Div. 2)|1|\n|<ul><li>- [ ] Done</li></ul>|61|[Roma and Lucky Numbers](http://codeforces.com/problemset/problem/262/A)|Codeforces||Codeforces Round #160 (Div. 2)|1|\n|<ul><li>- [ ] Done</li></ul>|62|[Beautiful Matrix](http://codeforces.com/problemset/problem/263/A)|Codeforces||Codeforces Round #161 (Div. 2)|1|\n|<ul><li>- [ ] Done</li></ul>|63|[Colorful Stones (Simplified Edition)](http://codeforces.com/problemset/problem/265/A)|Codeforces||Codeforces Round #162 (Div. 2)|1|\n|<ul><li>- [ ] Done</li></ul>|64|[Stones on the Table](http://codeforces.com/problemset/problem/266/A)|Codeforces||Codeforces Round #163 (Div. 2)|1|\n|<ul><li>- [ ] Done</li></ul>|65|[Games](http://codeforces.com/problemset/problem/268/A)|Codeforces||Codeforces Round #164 (Div. 2)|1|\n|<ul><li>- [ ] Done</li></ul>|66|[Fancy Fence](http://codeforces.com/problemset/problem/270/A)|Codeforces||Codeforces Round #165 (Div. 2)|1|\n|<ul><li>- [ ] Done</li></ul>|67|[Beautiful Year](http://codeforces.com/problemset/problem/271/A)|Codeforces||Codeforces Round #166 (Div. 2)|1|\n|<ul><li>- [ ] Done</li></ul>|68|[Dima and Friends](http://codeforces.com/problemset/problem/272/A)|Codeforces||Codeforces Round #167 (Div. 2)|1|\n|<ul><li>- [ ] Done</li></ul>|69|[Lights Out](http://codeforces.com/problemset/problem/275/A)|Codeforces||Codeforces Round #168 (Div. 2)|1|\n|<ul><li>- [ ] Done</li></ul>|70|[Lunch Rush](http://codeforces.com/problemset/problem/276/A)|Codeforces||Codeforces Round #169 (Div. 2)|1|\n|<ul><li>- [ ] Done</li></ul>|71|[Circle Line](http://codeforces.com/problemset/problem/278/A)|Codeforces||Codeforces Round #170 (Div. 2)|1|\n|<ul><li>- [ ] Done</li></ul>|72|[Word Capitalization](http://codeforces.com/problemset/problem/281/A)|Codeforces||Codeforces Round #172 (Div. 2)|1|\n|<ul><li>- [ ] Done</li></ul>|73|[Bit++](http://codeforces.com/problemset/problem/282/A)|Codeforces||Codeforces Round #173 (Div. 2)|1|\n|<ul><li>- [ ] Done</li></ul>|74|[Slightly Decreasing Permutations](http://codeforces.com/problemset/problem/285/A)|Codeforces||Codeforces Round #175 (Div. 2)|1|\n|<ul><li>- [ ] Done</li></ul>|75|[Shaass and Oskols](http://codeforces.com/problemset/problem/294/A)|Codeforces||Codeforces Round #178 (Div. 2)|1|\n|<ul><li>- [ ] Done</li></ul>|76|[Array](http://codeforces.com/problemset/problem/300/A)|Codeforces||Codeforces Round #181 (Div. 2)|1|\n|<ul><li>- [ ] Done</li></ul>|77|[Ilya and Bank Account](http://codeforces.com/problemset/problem/313/A)|Codeforces||Codeforces Round #186 (Div. 2)|1|\n|<ul><li>- [ ] Done</li></ul>|78|[Even Odds](http://codeforces.com/problemset/problem/318/A)|Codeforces||Codeforces Round #188 (Div. 2)|1|\n|<ul><li>- [ ] Done</li></ul>|79|[Magic Numbers](http://codeforces.com/problemset/problem/320/A)|Codeforces||Codeforces Round #189 (Div. 2)|1|\n|<ul><li>- [ ] Done</li></ul>|80|[Flipping Game](http://codeforces.com/problemset/problem/327/A)|Codeforces||Codeforces Round #191 (Div. 2)|1|\n|<ul><li>- [ ] Done</li></ul>|81|[Cakeminator](http://codeforces.com/problemset/problem/330/A)|Codeforces||Codeforces Round #192 (Div. 2)|1|\n|<ul><li>- [ ] Done</li></ul>|82|[Candy Bags](http://codeforces.com/problemset/problem/334/A)|Codeforces||Codeforces Round #194 (Div. 2)|1|\n|<ul><li>- [ ] Done</li></ul>|83|[Puzzles](http://codeforces.com/problemset/problem/337/A)|Codeforces||Codeforces Round #196 (Div. 2)|1|\n|<ul><li>- [ ] Done</li></ul>|84|[Helpful Maths](http://codeforces.com/problemset/problem/339/A)|Codeforces||Codeforces Round #197 (Div. 2)|1|\n|<ul><li>- [ ] Done</li></ul>|85|[Magnets](http://codeforces.com/problemset/problem/344/A)|Codeforces||Codeforces Round #200 (Div. 2)|1|\n|<ul><li>- [ ] Done</li></ul>|86|[Cinema Line](http://codeforces.com/problemset/problem/349/A)|Codeforces||Codeforces Round #202 (Div. 2)|1|\n|<ul><li>- [ ] Done</li></ul>|87|[TL](http://codeforces.com/problemset/problem/350/A)|Codeforces||Codeforces Round #203 (Div. 2)|1|\n|<ul><li>- [ ] Done</li></ul>|88|[Jeff and Digits](http://codeforces.com/problemset/problem/352/A)|Codeforces||Codeforces Round #204 (Div. 2)|1|\n|<ul><li>- [ ] Done</li></ul>|89|[Domino](http://codeforces.com/problemset/problem/353/A)|Codeforces||Codeforces Round #205 (Div. 2)|1|\n|<ul><li>- [ ] Done</li></ul>|90|[Valera and Plates](http://codeforces.com/problemset/problem/369/A)|Codeforces||Codeforces Round #216 (Div. 2)|1|\n|<ul><li>- [ ] Done</li></ul>|91|[Playing with Dice](http://codeforces.com/problemset/problem/378/A)|Codeforces||Codeforces Round #222 (Div. 2)|1|\n|<ul><li>- [ ] Done</li></ul>|92|[Sereja and Dima](http://codeforces.com/problemset/problem/381/A)|Codeforces||Codeforces Round #223 (Div. 2)|1|\n|<ul><li>- [ ] Done</li></ul>|93|[Coder](http://codeforces.com/problemset/problem/384/A)|Codeforces||Codeforces Round #225 (Div. 2)|1|\n|<ul><li>- [ ] Done</li></ul>|94|[Bear and Raspberry](http://codeforces.com/problemset/problem/385/A)|Codeforces||Codeforces Round #226 (Div. 2)|1|\n|<ul><li>- [ ] Done</li></ul>|95|[Fox and Number Game](http://codeforces.com/problemset/problem/389/A)|Codeforces||Codeforces Round #228 (Div. 2)|1|\n|<ul><li>- [ ] Done</li></ul>|96|[Vanya and Cards](http://codeforces.com/problemset/problem/401/A)|Codeforces||Codeforces Round #235 (Div. 2)|1|\n|<ul><li>- [ ] Done</li></ul>|97|[Valera and X](http://codeforces.com/problemset/problem/404/A)|Codeforces||Codeforces Round #237 (Div. 2)|1|\n|<ul><li>- [ ] Done</li></ul>|98|[Gravity Flip](http://codeforces.com/problemset/problem/405/A)|Codeforces||Codeforces Round #238 (Div. 2)|1|\n|<ul><li>- [ ] Done</li></ul>|99|[Police Recruits](http://codeforces.com/problemset/problem/427/A)|Codeforces||Codeforces Round #244 (Div. 2)|1|\n|<ul><li>- [ ] Done</li></ul>|100|[Choosing Teams](http://codeforces.com/problemset/problem/432/A)|Codeforces||Codeforces Round #246 (Div. 2)|1|\n|<ul><li>- [ ] Done</li></ul>|101|[Black Square](http://codeforces.com/problemset/problem/431/A)|Codeforces||Codeforces Round #247 (Div. 2)|1|\n|<ul><li>- [ ] Done</li></ul>|102|[Queue on Bus Stop](http://codeforces.com/problemset/problem/435/A)|Codeforces||Codeforces Round #249 (Div. 2)|1|\n|<ul><li>- [ ] Done</li></ul>|103|[Devu, the Singer and Churu, the Joker](http://codeforces.com/problemset/problem/439/A)|Codeforces||Codeforces Round #251 (Div. 2)|1|\n|<ul><li>- [ ] Done</li></ul>|104|[Valera and Antique Items](http://codeforces.com/problemset/problem/441/A)|Codeforces||Codeforces Round #252 (Div. 2)|1|\n|<ul><li>- [ ] Done</li></ul>|105|[Anton and Letters](http://codeforces.com/problemset/problem/443/A)|Codeforces||Codeforces Round #253 (Div. 2)|1|\n|<ul><li>- [ ] Done</li></ul>|106|[DZY Loves Chessboard](http://codeforces.com/problemset/problem/445/A)|Codeforces||Codeforces Round #254 (Div. 2)|1|\n|<ul><li>- [ ] Done</li></ul>|107|[Rewards](http://codeforces.com/problemset/problem/448/A)|Codeforces||Codeforces Round #256 (Div. 2)|1|\n|<ul><li>- [ ] Done</li></ul>|108|[Jzzhu and Children](http://codeforces.com/problemset/problem/450/A)|Codeforces||Codeforces Round #257 (Div. 2)|1|\n|<ul><li>- [ ] Done</li></ul>|109|[Game With Sticks](http://codeforces.com/problemset/problem/451/A)|Codeforces||Codeforces Round #258 (Div. 2)|1|\n|<ul><li>- [ ] Done</li></ul>|110|[Little Pony and Crystal Mine](http://codeforces.com/problemset/problem/454/A)|Codeforces||Codeforces Round #259 (Div. 2)|1|\n|<ul><li>- [ ] Done</li></ul>|111|[Laptops](http://codeforces.com/problemset/problem/456/A)|Codeforces||Codeforces Round #260 (Div. 2)|1|\n|<ul><li>- [ ] Done</li></ul>|112|[Pashmak and Garden](http://codeforces.com/problemset/problem/459/A)|Codeforces||Codeforces Round #261 (Div. 2)|1|\n|<ul><li>- [ ] Done</li></ul>|113|[Vasya and Socks](http://codeforces.com/problemset/problem/460/A)|Codeforces||Codeforces Round #262 (Div. 2)|1|\n|<ul><li>- [ ] Done</li></ul>|114|[Appleman and Easy Task](http://codeforces.com/problemset/problem/462/A)|Codeforces||Codeforces Round #263 (Div. 2)|1|\n|<ul><li>- [ ] Done</li></ul>|115|[Caisa and Sugar](http://codeforces.com/problemset/problem/463/A)|Codeforces||Codeforces Round #264 (Div. 2)|1|\n|<ul><li>- [ ] Done</li></ul>|116|[inc ARG](http://codeforces.com/problemset/problem/465/A)|Codeforces||Codeforces Round #265 (Div. 2)|1|\n|<ul><li>- [ ] Done</li></ul>|117|[Cheap Travel](http://codeforces.com/problemset/problem/466/A)|Codeforces||Codeforces Round #266 (Div. 2)|1|\n|<ul><li>- [ ] Done</li></ul>|118|[George and Accommodation](http://codeforces.com/problemset/problem/467/A)|Codeforces||Codeforces Round #267 (Div. 2)|1|\n|<ul><li>- [ ] Done</li></ul>|119|[I Wanna Be the Guy](http://codeforces.com/problemset/problem/469/A)|Codeforces||Codeforces Round #268 (Div. 2)|1|\n|<ul><li>- [ ] Done</li></ul>|120|[MUH and Sticks](http://codeforces.com/problemset/problem/471/A)|Codeforces||Codeforces Round #269 (Div. 2)|1|\n|<ul><li>- [ ] Done</li></ul>|121|[Design Tutorial: Learn from Math](http://codeforces.com/problemset/problem/472/A)|Codeforces||Codeforces Round #270|1|\n|<ul><li>- [ ] Done</li></ul>|122|[Keyboard](http://codeforces.com/problemset/problem/474/A)|Codeforces||Codeforces Round #271 (Div. 2)|1|\n|<ul><li>- [ ] Done</li></ul>|123|[Dreamoon and Stairs](http://codeforces.com/problemset/problem/476/A)|Codeforces||Codeforces Round #272 (Div. 2)|1|\n|<ul><li>- [ ] Done</li></ul>|124|[Initial Bet](http://codeforces.com/problemset/problem/478/A)|Codeforces||Codeforces Round #273 (Div. 2)|1|\n|<ul><li>- [ ] Done</li></ul>|125|[Expression](http://codeforces.com/problemset/problem/479/A)|Codeforces||Codeforces Round #274 (Div. 2)|1|\n|<ul><li>- [ ] Done</li></ul>|126|[Counterexample ](http://codeforces.com/problemset/problem/483/A)|Codeforces||Codeforces Round #275 (Div. 2)|1|\n|<ul><li>- [ ] Done</li></ul>|127|[Calculating Function](http://codeforces.com/problemset/problem/486/A)|Codeforces||Codeforces Round #277 (Div. 2)|1|\n|<ul><li>- [ ] Done</li></ul>|128|[Giga Tower](http://codeforces.com/problemset/problem/488/A)|Codeforces||Codeforces Round #278 (Div. 2)|1|\n|<ul><li>- [ ] Done</li></ul>|129|[Team Olympiad](http://codeforces.com/problemset/problem/490/A)|Codeforces||Codeforces Round #279 (Div. 2)|1|\n|<ul><li>- [ ] Done</li></ul>|130|[Vanya and Cubes](http://codeforces.com/problemset/problem/492/A)|Codeforces||Codeforces Round #280 (Div. 2)|1|\n|<ul><li>- [ ] Done</li></ul>|131|[Minimum Difficulty](http://codeforces.com/problemset/problem/496/A)|Codeforces||Codeforces Round #283 (Div. 2)|1|\n|<ul><li>- [ ] Done</li></ul>|132|[Watching a movie](http://codeforces.com/problemset/problem/499/A)|Codeforces||Codeforces Round #284 (Div. 2)|1|\n|<ul><li>- [ ] Done</li></ul>|133|[Contest](http://codeforces.com/problemset/problem/501/A)|Codeforces||Codeforces Round #285 (Div. 2)|1|\n|<ul><li>- [ ] Done</li></ul>|134|[Amr and Music](http://codeforces.com/problemset/problem/507/A)|Codeforces||Codeforces Round #287 (Div. 2)|1|\n|<ul><li>- [ ] Done</li></ul>|135|[Maximum in Table](http://codeforces.com/problemset/problem/509/A)|Codeforces||Codeforces Round #289 (Div. 2, ACM ICPC Rules)|1|\n|<ul><li>- [ ] Done</li></ul>|136|[Fox And Snake](http://codeforces.com/problemset/problem/510/A)|Codeforces||Codeforces Round #290 (Div. 2)|1|\n|<ul><li>- [ ] Done</li></ul>|137|[Chewba?ca and Number](http://codeforces.com/problemset/problem/514/A)|Codeforces||Codeforces Round #291 (Div. 2)|1|\n|<ul><li>- [ ] Done</li></ul>|138|[Drazil and Date](http://codeforces.com/problemset/problem/515/A)|Codeforces||Codeforces Round #292 (Div. 2)|1|\n|<ul><li>- [ ] Done</li></ul>|139|[A and B and Chess](http://codeforces.com/problemset/problem/519/A)|Codeforces||Codeforces Round #294 (Div. 2)|1|\n|<ul><li>- [ ] Done</li></ul>|140|[Pangram](http://codeforces.com/problemset/problem/520/A)|Codeforces||Codeforces Round #295 (Div. 2)|1|\n|<ul><li>- [ ] Done</li></ul>|141|[Playing with Paper](http://codeforces.com/problemset/problem/527/A)|Codeforces||Codeforces Round #296 (Div. 2)|1|\n|<ul><li>- [ ] Done</li></ul>|142|[Vitaliy and Pie](http://codeforces.com/problemset/problem/525/A)|Codeforces||Codeforces Round #297 (Div. 2)|1|\n|<ul><li>- [ ] Done</li></ul>|143|[Exam](http://codeforces.com/problemset/problem/534/A)|Codeforces||Codeforces Round #298 (Div. 2)|1|\n|<ul><li>- [ ] Done</li></ul>|144|[Tavas and Nafas](http://codeforces.com/problemset/problem/535/A)|Codeforces||Codeforces Round #299 (Div. 2)|1|\n|<ul><li>- [ ] Done</li></ul>|145|[Combination Lock](http://codeforces.com/problemset/problem/540/A)|Codeforces||Codeforces Round #301 (Div. 2)|1|\n|<ul><li>- [ ] Done</li></ul>|146|[Toy Cars](http://codeforces.com/problemset/problem/545/A)|Codeforces||Codeforces Round #303 (Div. 2)|1|\n|<ul><li>- [ ] Done</li></ul>|147|[Soldier and Bananas](http://codeforces.com/problemset/problem/546/A)|Codeforces||Codeforces Round #304 (Div. 2)|1|\n|<ul><li>- [ ] Done</li></ul>|148|[Mike and Fax](http://codeforces.com/problemset/problem/548/A)|Codeforces||Codeforces Round #305 (Div. 2)|1|\n|<ul><li>- [ ] Done</li></ul>|149|[Two Substrings](http://codeforces.com/problemset/problem/550/A)|Codeforces||Codeforces Round #306 (Div. 2)|1|\n|<ul><li>- [ ] Done</li></ul>|150|[GukiZ and Contest](http://codeforces.com/problemset/problem/551/A)|Codeforces||Codeforces Round #307 (Div. 2)|1|\n|<ul><li>- [ ] Done</li></ul>|151|[Vanya and Table](http://codeforces.com/problemset/problem/552/A)|Codeforces||Codeforces Round #308 (Div. 2)|1|\n|<ul><li>- [ ] Done</li></ul>|152|[Kyoya and Photobooks](http://codeforces.com/problemset/problem/554/A)|Codeforces||Codeforces Round #309 (Div. 2)|1|\n|<ul><li>- [ ] Done</li></ul>|153|[Case of the Zeros and Ones](http://codeforces.com/problemset/problem/556/A)|Codeforces||Codeforces Round #310 (Div. 2)|1|\n|<ul><li>- [ ] Done</li></ul>|154|[Ilya and Diplomas](http://codeforces.com/problemset/problem/557/A)|Codeforces||Codeforces Round #311 (Div. 2)|1|\n|<ul><li>- [ ] Done</li></ul>|155|[Lala Land and Apple Trees](http://codeforces.com/problemset/problem/558/A)|Codeforces||Codeforces Round #312 (Div. 2)|1|\n|<ul><li>- [ ] Done</li></ul>|156|[Currency System in Geraldion](http://codeforces.com/problemset/problem/560/A)|Codeforces||Codeforces Round #313 (Div. 2)|1|\n|<ul><li>- [ ] Done</li></ul>|157|[Lineland Mail](http://codeforces.com/problemset/problem/567/A)|Codeforces||Codeforces Round #Pi (Div. 2)|1|\n|<ul><li>- [ ] Done</li></ul>|158|[Elections](http://codeforces.com/problemset/problem/570/A)|Codeforces||Codeforces Round #316 (Div. 2)|1|\n|<ul><li>- [ ] Done</li></ul>|159|[Arrays](http://codeforces.com/problemset/problem/572/A)|Codeforces||Codeforces Round #317 [AimFund Thanks-Round] (Div. 2)|1|\n|<ul><li>- [ ] Done</li></ul>|160|[Bear and Elections](http://codeforces.com/problemset/problem/574/A)|Codeforces||Codeforces Round #318 [RussianCodeCup Thanks-Round] (Div. 2)|1|\n|<ul><li>- [ ] Done</li></ul>|161|[Multiplication Table](http://codeforces.com/problemset/problem/577/A)|Codeforces||Codeforces Round #319 (Div. 2)|1|\n|<ul><li>- [ ] Done</li></ul>|162|[Raising Bacteria](http://codeforces.com/problemset/problem/579/A)|Codeforces||Codeforces Round #320 (Div. 2) [Bayan Thanks-Round]|1|\n|<ul><li>- [ ] Done</li></ul>|163|[Kefa and First Steps](http://codeforces.com/problemset/problem/580/A)|Codeforces||Codeforces Round #321 (Div. 2)|1|\n|<ul><li>- [ ] Done</li></ul>|164|[Vasya the Hipster](http://codeforces.com/problemset/problem/581/A)|Codeforces||Codeforces Round #322 (Div. 2)|1|\n|<ul><li>- [ ] Done</li></ul>|165|[Asphalting Roads](http://codeforces.com/problemset/problem/583/A)|Codeforces||Codeforces Round #323 (Div. 2)|1|\n|<ul><li>- [ ] Done</li></ul>|166|[Olesya and Rodion](http://codeforces.com/problemset/problem/584/A)|Codeforces||Codeforces Round #324 (Div. 2)|1|\n|<ul><li>- [ ] Done</li></ul>|167|[Alena's Schedule](http://codeforces.com/problemset/problem/586/A)|Codeforces||Codeforces Round #325 (Div. 2)|1|\n|<ul><li>- [ ] Done</li></ul>|168|[Duff and Meat](http://codeforces.com/problemset/problem/588/A)|Codeforces||Codeforces Round #326 (Div. 2)|1|\n|<ul><li>- [ ] Done</li></ul>|169|[Wizards' Duel](http://codeforces.com/problemset/problem/591/A)|Codeforces||Codeforces Round #327 (Div. 2)|1|\n|<ul><li>- [ ] Done</li></ul>|170|[Vitaly and Night](http://codeforces.com/problemset/problem/595/A)|Codeforces||Codeforces Round #330 (Div. 2)|1|\n|<ul><li>- [ ] Done</li></ul>|171|[Patrick and Shopping](http://codeforces.com/problemset/problem/599/A)|Codeforces||Codeforces Round #332 (Div. 2)|1|\n|<ul><li>- [ ] Done</li></ul>|172|[Two Bases](http://codeforces.com/problemset/problem/602/A)|Codeforces||Codeforces Round #333 (Div. 2)|1|\n|<ul><li>- [ ] Done</li></ul>|173|[Uncowed Forces](http://codeforces.com/problemset/problem/604/A)|Codeforces||Codeforces Round #334 (Div. 2)|1|\n|<ul><li>- [ ] Done</li></ul>|174|[Pasha and Stick](http://codeforces.com/problemset/problem/610/A)|Codeforces||Codeforces Round #337 (Div. 2)|1|\n|<ul><li>- [ ] Done</li></ul>|175|[Bulbs](http://codeforces.com/problemset/problem/615/A)|Codeforces||Codeforces Round #338 (Div. 2)|1|\n|<ul><li>- [ ] Done</li></ul>|176|[Elephant](http://codeforces.com/problemset/problem/617/A)|Codeforces||Codeforces Round #340 (Div. 2)|1|\n|<ul><li>- [ ] Done</li></ul>|177|[Wet Shark and Odd and Even](http://codeforces.com/problemset/problem/621/A)|Codeforces||Codeforces Round #341 (Div. 2)|1|\n|<ul><li>- [ ] Done</li></ul>|178|[Far Relative’s Birthday Cake](http://codeforces.com/problemset/problem/629/A)|Codeforces||Codeforces Round #343 (Div. 2)|1|\n|<ul><li>- [ ] Done</li></ul>|179|[Joysticks](http://codeforces.com/problemset/problem/651/A)|Codeforces||Codeforces Round #345 (Div. 2)|1|\n|<ul><li>- [ ] Done</li></ul>|180|[Round House](http://codeforces.com/problemset/problem/659/A)|Codeforces||Codeforces Round #346 (Div. 2)|1|\n|<ul><li>- [ ] Done</li></ul>|181|[Complicated GCD](http://codeforces.com/problemset/problem/664/A)|Codeforces||Codeforces Round #347 (Div. 2)|1|\n|<ul><li>- [ ] Done</li></ul>|182|[Holidays](http://codeforces.com/problemset/problem/670/A)|Codeforces||Codeforces Round #350 (Div. 2)|1|\n|<ul><li>- [ ] Done</li></ul>|183|[Summer Camp](http://codeforces.com/problemset/problem/672/A)|Codeforces||Codeforces Round #352 (Div. 2)|1|\n|<ul><li>- [ ] Done</li></ul>|184|[Infinite Sequence](http://codeforces.com/problemset/problem/675/A)|Codeforces||Codeforces Round #353 (Div. 2)|1|\n|<ul><li>- [ ] Done</li></ul>|185|[Nicholas and Permutation](http://codeforces.com/problemset/problem/676/A)|Codeforces||Codeforces Round #354 (Div. 2)|1|\n|<ul><li>- [ ] Done</li></ul>|186|[Vanya and Fence](http://codeforces.com/problemset/problem/677/A)|Codeforces||Codeforces Round #355 (Div. 2)|1|\n|<ul><li>- [ ] Done</li></ul>|187|[Bear and Five Cards](http://codeforces.com/problemset/problem/680/A)|Codeforces||Codeforces Round #356 (Div. 2)|1|\n|<ul><li>- [ ] Done</li></ul>|188|[A Good Contest](http://codeforces.com/problemset/problem/681/A)|Codeforces||Codeforces Round #357 (Div. 2)|1|\n|<ul><li>- [ ] Done</li></ul>|189|[Alyona and Numbers](http://codeforces.com/problemset/problem/682/A)|Codeforces||Codeforces Round #358 (Div. 2)|1|\n|<ul><li>- [ ] Done</li></ul>|190|[Free Ice Cream](http://codeforces.com/problemset/problem/686/A)|Codeforces||Codeforces Round #359 (Div. 2)|1|\n|<ul><li>- [ ] Done</li></ul>|191|[Opponents](http://codeforces.com/problemset/problem/688/A)|Codeforces||Codeforces Round #360 (Div. 2)|1|\n|<ul><li>- [ ] Done</li></ul>|192|[Pineapple Incident](http://codeforces.com/problemset/problem/697/A)|Codeforces||Codeforces Round #362 (Div. 2)|1|\n|<ul><li>- [ ] Done</li></ul>|193|[Launch of Collider](http://codeforces.com/problemset/problem/699/A)|Codeforces||Codeforces Round #363 (Div. 2)|1|\n|<ul><li>- [ ] Done</li></ul>|194|[Cards](http://codeforces.com/problemset/problem/701/A)|Codeforces||Codeforces Round #364 (Div. 2)|1|\n|<ul><li>- [ ] Done</li></ul>|195|[Mishka and Game](http://codeforces.com/problemset/problem/703/A)|Codeforces||Codeforces Round #365 (Div. 2)|1|\n|<ul><li>- [ ] Done</li></ul>|196|[Hulk](http://codeforces.com/problemset/problem/705/A)|Codeforces||Codeforces Round #366 (Div. 2)|1|\n|<ul><li>- [ ] Done</li></ul>|197|[Beru-taxi](http://codeforces.com/problemset/problem/706/A)|Codeforces||Codeforces Round #367 (Div. 2)|1|\n|<ul><li>- [ ] Done</li></ul>|198|[Brain's Photos](http://codeforces.com/problemset/problem/707/A)|Codeforces||Codeforces Round #368 (Div. 2)|1|\n|<ul><li>- [ ] Done</li></ul>|199|[Bus to Udayland](http://codeforces.com/problemset/problem/711/A)|Codeforces||Codeforces Round #369 (Div. 2)|1|\n|<ul><li>- [ ] Done</li></ul>|200|[Memory and Crow](http://codeforces.com/problemset/problem/712/A)|Codeforces||Codeforces Round #370 (Div. 2)|1|\n|<ul><li>- [ ] Done</li></ul>|201|[Meeting of Old Friends](http://codeforces.com/problemset/problem/714/A)|Codeforces||Codeforces Round #371 (Div. 2)|1|\n|<ul><li>- [ ] Done</li></ul>|202|[Crazy Computer](http://codeforces.com/problemset/problem/716/A)|Codeforces||Codeforces Round #372 (Div. 2)|1|\n|<ul><li>- [ ] Done</li></ul>|203|[Vitya in the Countryside](http://codeforces.com/problemset/problem/719/A)|Codeforces||Codeforces Round #373 (Div. 2)|1|\n|<ul><li>- [ ] Done</li></ul>|204|[One-dimensional Japanese Crossword](http://codeforces.com/problemset/problem/721/A)|Codeforces||Codeforces Round #374 (Div. 2)|1|\n|<ul><li>- [ ] Done</li></ul>|205|[The New Year: Meeting Friends](http://codeforces.com/problemset/problem/723/A)|Codeforces||Codeforces Round #375 (Div. 2)|1|\n|<ul><li>- [ ] Done</li></ul>|206|[Buy a Shovel](http://codeforces.com/problemset/problem/732/A)|Codeforces||Codeforces Round #377 (Div. 2)|1|\n|<ul><li>- [ ] Done</li></ul>|207|[Night at the Museum](http://codeforces.com/problemset/problem/731/A)|Codeforces||Codeforces Round #376 (Div. 2)|1|\n|<ul><li>- [ ] Done</li></ul>|208|[Grasshopper And the String](http://codeforces.com/problemset/problem/733/A)|Codeforces||Codeforces Round #378 (Div. 2)|1|\n|<ul><li>- [ ] Done</li></ul>|209|[Spreadsheet](http://codeforces.com/problemset/problem/1/B)|Codeforces||Codeforces Beta Round #1|1|\n|<ul><li>- [ ] Done</li></ul>|210|[Anton and Danik](http://codeforces.com/problemset/problem/734/A)|Codeforces||Codeforces Round #379 (Div. 2)|1|\n|<ul><li>- [ ] Done</li></ul>|211|[Ostap and Grasshopper](http://codeforces.com/problemset/problem/735/A)|Codeforces||Codeforces Round #382 (Div. 2)|1|\n|<ul><li>- [ ] Done</li></ul>|212|[Arpa’s hard exam and Mehrdad’s naive cheat](http://codeforces.com/problemset/problem/742/A)|Codeforces||Codeforces Round #383 (Div. 2)|1|\n|<ul><li>- [ ] Done</li></ul>|213|[Balloons Colors](p?ID=6)|A2 Online Judge|||1|\n|<ul><li>- [ ] Done</li></ul>|214|[Bachgold Problem](http://codeforces.com/problemset/problem/749/A)|Codeforces||Codeforces Round #388 (Div. 2)|1|\n|<ul><li>- [ ] Done</li></ul>|215|[Compote](http://codeforces.com/problemset/problem/746/A)|Codeforces||Codeforces Round #386 (Div. 2)|1|\n|<ul><li>- [ ] Done</li></ul>|216|[Hongcow Learns the Cyclic Shift](http://codeforces.com/problemset/problem/745/A)|Codeforces||Codeforces Round #385 (Div. 2)|1|\n|<ul><li>- [ ] Done</li></ul>|217|[Vladik and flights](http://codeforces.com/problemset/problem/743/A)|Codeforces||Codeforces Round #384 (Div. 2)|1|\n|<ul><li>- [ ] Done</li></ul>|218|[Primary Arithmetic](https://uva.onlinejudge.org/index.php?option=onlinejudge&page=show_problem&problem=976)|UVA|||1|\n|<ul><li>- [ ] Done</li></ul>|219|[Gotta Catch Em' All!](http://codeforces.com/problemset/problem/757/A)|Codeforces||Codecraft-17 and Codeforces Round #391 (Div. 1 + Div. 2, combined)|1|\n|<ul><li>- [ ] Done</li></ul>|220|[Dasha and Stairs](http://codeforces.com/problemset/problem/761/A)|Codeforces||Codeforces Round #394 (Div. 2)|1|\n|<ul><li>- [ ] Done</li></ul>|221|[Holiday Of Equality](http://codeforces.com/problemset/problem/758/A)|Codeforces||Codeforces Round #392 (Div. 2)|1|\n|<ul><li>- [ ] Done</li></ul>|222|[Tetrahedron](http://codeforces.com/problemset/problem/166/E)|Codeforces||Codeforces Round #113 (Div. 2)|1|\n|<ul><li>- [ ] Done</li></ul>|223|[Mahmoud and Longest Uncommon Subsequence](http://codeforces.com/problemset/problem/766/A)|Codeforces||Codeforces Round #396 (Div. 2)|1|\n|<ul><li>- [ ] Done</li></ul>|224|[Taymyr is calling you](http://codeforces.com/problemset/problem/764/A)|Codeforces||Codeforces Round #395 (Div. 2)|1|\n|<ul><li>- [ ] Done</li></ul>|225|[Snacktower](http://codeforces.com/problemset/problem/767/A)|Codeforces||Codeforces Round #398 (Div. 2)|1|\n|<ul><li>- [ ] Done</li></ul>|226|[Oath of the Night's Watch](http://codeforces.com/problemset/problem/768/A)|Codeforces||Divide by Zero 2017 and Codeforces Round #399 (Div. 1 + Div. 2, combined)|1|\n|<ul><li>- [ ] Done</li></ul>|227|[A Serial Killer](http://codeforces.com/problemset/problem/776/A)|Codeforces||ICM Technex 2017 and Codeforces Round #400 (Div. 1 + Div. 2, combined)|1|\n|<ul><li>- [ ] Done</li></ul>|228|[Shell Game](http://codeforces.com/problemset/problem/777/A)|Codeforces||Codeforces Round #401 (Div. 2)|1|\n|<ul><li>- [ ] Done</li></ul>|229|[Pupils Redistribution](http://codeforces.com/problemset/problem/779/A)|Codeforces||Codeforces Round #402 (Div. 2)|1|\n|<ul><li>- [ ] Done</li></ul>|230|[Andryusha and Socks](http://codeforces.com/problemset/problem/780/A)|Codeforces||?????????? 2017 - ????? (?????? ??? ??????-??????????)|1|\n|<ul><li>- [ ] Done</li></ul>|231|[Anton and Polyhedrons](http://codeforces.com/problemset/problem/785/A)|Codeforces||Codeforces Round #404 (Div. 2)|1|\n|<ul><li>- [ ] Done</li></ul>|232|[Bear and Big Brother](http://codeforces.com/problemset/problem/791/A)|Codeforces||Codeforces Round #405 (rated, Div. 2, based on VK Cup 2017 Round 1)|1|\n|<ul><li>- [ ] Done</li></ul>|233|[The Monster](http://codeforces.com/problemset/problem/787/A)|Codeforces||Codeforces Round #406 (Div. 2)|1|\n|<ul><li>- [ ] Done</li></ul>|234|[Anastasia and pebbles](http://codeforces.com/problemset/problem/789/A)|Codeforces||Codeforces Round #407 (Div. 2)|1|\n|<ul><li>- [ ] Done</li></ul>|235|[Buying A House](http://codeforces.com/problemset/problem/796/A)|Codeforces||Codeforces Round #408 (Div. 2)|1|\n|<ul><li>- [ ] Done</li></ul>|236|[Nth Smallest Value](p?ID=159)|A2 Online Judge|||1|\n|<ul><li>- [ ] Done</li></ul>|237|[Vladik and Courtesy](http://codeforces.com/problemset/problem/811/A)|Codeforces||Codeforces Round #416 (Div. 2)|1|\n|<ul><li>- [ ] Done</li></ul>|238|[Fake NP](http://codeforces.com/problemset/problem/805/A)|Codeforces||Codeforces Round #411 (Div. 2)|1|\n|<ul><li>- [ ] Done</li></ul>|239|[Mike and palindrome](http://codeforces.com/problemset/problem/798/A)|Codeforces||Codeforces Round #410 (Div. 2)|1|\n|<ul><li>- [ ] Done</li></ul>|240|[Given Length and Sum of Digits...](http://codeforces.com/problemset/problem/489/C)|Codeforces||Codeforces Round #277.5 (Div. 2)|1|\n|<ul><li>- [ ] Done</li></ul>|241|[Generous Kefa](http://codeforces.com/problemset/problem/841/A)|Codeforces||Codeforces Round #429 (Div. 2)|1|\n|<ul><li>- [ ] Done</li></ul>|242|[Arya and Bran](http://codeforces.com/problemset/problem/839/A)|Codeforces||Codeforces Round #428 (Div. 2)|1|\n|<ul><li>- [ ] Done</li></ul>|243|[Key races](http://codeforces.com/problemset/problem/835/A)|Codeforces||Codeforces Round #427 (Div. 2)|1|\n|<ul><li>- [ ] Done</li></ul>|244|[The Useless Toy](http://codeforces.com/problemset/problem/834/A)|Codeforces||Codeforces Round #426 (Div. 2)|1|\n|<ul><li>- [ ] Done</li></ul>|245|[Sasha and Sticks](http://codeforces.com/problemset/problem/832/A)|Codeforces||Codeforces Round #425 (Div. 2)|1|\n|<ul><li>- [ ] Done</li></ul>|246|[Unimodal Array](http://codeforces.com/problemset/problem/831/A)|Codeforces||Codeforces Round #424 (Div. 2, rated, based on VK Cup Finals)|1|\n|<ul><li>- [ ] Done</li></ul>|247|[I'm bored with life](http://codeforces.com/problemset/problem/822/A)|Codeforces||Codeforces Round #422 (Div. 2)|1|\n|<ul><li>- [ ] Done</li></ul>|248|[Karen and Morning](http://codeforces.com/problemset/problem/816/A)|Codeforces||Codeforces Round #419 (Div. 2)|1|\n|<ul><li>- [ ] Done</li></ul>|249|[An abandoned sentiment from past](http://codeforces.com/problemset/problem/814/A)|Codeforces||Codeforces Round #418 (Div. 2)|1|\n|<ul><li>- [ ] Done</li></ul>|250|[Fair Game](http://codeforces.com/problemset/problem/864/A)|Codeforces||Codeforces Round #436 (Div. 2)|1|\n|<ul><li>- [ ] Done</li></ul>|251|[Prime Permutations](http://www.codechef.com/problems/PPERM)|CodeChef|||1|\n|<ul><li>- [ ] Done</li></ul>|252|[Trip For Meal](http://codeforces.com/problemset/problem/876/A)|Codeforces||Codeforces Round #441 (Div. 2, by Moscow Team Olympiad)|1|\n|<ul><li>- [ ] Done</li></ul>|253|[Search for Pretty Integers](http://codeforces.com/problemset/problem/870/A)|Codeforces||Technocup 2018 - Elimination Round 2|1|\n|<ul><li>- [ ] Done</li></ul>|254|[The Artful Expedient](http://codeforces.com/problemset/problem/869/A)|Codeforces||Codeforces Round #439 (Div. 2)|1|\n|<ul><li>- [ ] Done</li></ul>|255|[Rounding](http://codeforces.com/problemset/problem/898/A)|Codeforces||Codeforces Round #451 (Div. 2)|1|\n|<ul><li>- [ ] Done</li></ul>|256|[Cloning Toys](http://codeforces.com/problemset/problem/922/A)|Codeforces||Codeforces Round #461 (Div. 2)|1|\n|<ul><li>- [ ] Done</li></ul>|257|[Jamie and Alarm Snooze](http://codeforces.com/problemset/problem/916/A)|Codeforces||Codeforces Round #457 (Div. 2)|1|\n|<ul><li>- [ ] Done</li></ul>|258|[Love Triangle](http://codeforces.com/problemset/problem/939/A)|Codeforces||Codeforces Round #464 (Div. 2)|1|\n|<ul><li>- [ ] Done</li></ul>|259|[Relational Operators](https://icpcarchive.ecs.baylor.edu/index.php?option=onlinejudge&page=show_problem&problem=2717)|Live Archive|2009|Asia - Phuket|1|\n|<ul><li>- [ ] Done</li></ul>|260|[Tiling a Grid With Dominoes](https://icpcarchive.ecs.baylor.edu/index.php?option=onlinejudge&page=show_problem&problem=1918)|Live Archive|2007|North America - Greater NY|1|\n|<ul><li>- [ ] Done</li></ul>|261|[Two Buttons](http://codeforces.com/problemset/problem/520/B)|Codeforces||Codeforces Round #295 (Div. 2)|1|\n|<ul><li>- [ ] Done</li></ul>|262|[Rare Order](https://uva.onlinejudge.org/index.php?option=onlinejudge&page=show_problem&problem=136)|UVA|||1|\n|<ul><li>- [ ] Done</li></ul>|263|[Simple Game](http://codeforces.com/problemset/problem/570/B)|Codeforces||Codeforces Round #316 (Div. 2)|1|\n|<ul><li>- [ ] Done</li></ul>|264|[ACM (ACronymMaker)](http://www.spoj.com/problems/ACMAKER/)|SPOJ|||1|\n|<ul><li>- [ ] Done</li></ul>|265|[Maximum Increase](http://codeforces.com/problemset/problem/702/A)|Codeforces||Educational Codeforces Round 15|1|\n|<ul><li>- [ ] Done</li></ul>|266|[USB Flash Drives](http://codeforces.com/problemset/problem/609/A)|Codeforces||Educational Codeforces Round 3|1|\n|<ul><li>- [ ] Done</li></ul>|267|[Heist](http://codeforces.com/problemset/problem/1041/A)|Codeforces||Codeforces Round #509 (Div. 2)|1|\n|<ul><li>- [ ] Done</li></ul>|268|[Sum of Consecutive Prime Numbers](https://icpcarchive.ecs.baylor.edu/index.php?option=onlinejudge&page=show_problem&problem=1400)|Live Archive|2005|Asia - Tokyo|1|\n|<ul><li>- [ ] Done</li></ul>|269|[Chat Servers Outgoing Traffic](http://codeforces.com/problemset/problem/5/A)|Codeforces||Codeforces Beta Round #5|2|\n|<ul><li>- [ ] Done</li></ul>|270|[Flag](http://codeforces.com/problemset/problem/16/A)|Codeforces||Codeforces Beta Round #16 (Div. 2 Only)|2|\n|<ul><li>- [ ] Done</li></ul>|271|[Second Order Statistics](http://codeforces.com/problemset/problem/22/A)|Codeforces||Codeforces Beta Round #22 (Div. 2 Only)|2|\n|<ul><li>- [ ] Done</li></ul>|272|[Next Test](http://codeforces.com/problemset/problem/27/A)|Codeforces||Codeforces Beta Round #27 (Codeforces format, Div. 2)|2|\n|<ul><li>- [ ] Done</li></ul>|273|[Triangular numbers](http://codeforces.com/problemset/problem/47/A)|Codeforces||Codeforces Beta Round #44 (Div. 2)|2|\n|<ul><li>- [ ] Done</li></ul>|274|[Sinking Ship](http://codeforces.com/problemset/problem/63/A)|Codeforces||Codeforces Beta Round #59 (Div. 2)|2|\n|<ul><li>- [ ] Done</li></ul>|275|[Restoring Password](http://codeforces.com/problemset/problem/94/A)|Codeforces||Codeforces Beta Round #76 (Div. 2 Only)|2|\n|<ul><li>- [ ] Done</li></ul>|276|[Blackjack](http://codeforces.com/problemset/problem/104/A)|Codeforces||Codeforces Beta Round #80 (Div. 2 Only)|2|\n|<ul><li>- [ ] Done</li></ul>|277|[Palindromic Times](http://codeforces.com/problemset/problem/108/A)|Codeforces||Codeforces Beta Round #83 (Div. 2 Only)|2|\n|<ul><li>- [ ] Done</li></ul>|278|[Wasted Time](http://codeforces.com/problemset/problem/127/A)|Codeforces||Codeforces Beta Round #93 (Div. 2 Only)|2|\n|<ul><li>- [ ] Done</li></ul>|279|[Help Vasilisa the Wise 2](http://codeforces.com/problemset/problem/143/A)|Codeforces||Codeforces Round #102 (Div. 2)|2|\n|<ul><li>- [ ] Done</li></ul>|280|[Game Outcome](http://codeforces.com/problemset/problem/157/A)|Codeforces||Codeforces Round #110 (Div. 2)|2|\n|<ul><li>- [ ] Done</li></ul>|281|[Rank List](http://codeforces.com/problemset/problem/166/A)|Codeforces||Codeforces Round #113 (Div. 2)|2|\n|<ul><li>- [ ] Done</li></ul>|282|[Wizards and Demonstration](http://codeforces.com/problemset/problem/168/A)|Codeforces||Codeforces Round #114 (Div. 2)|2|\n|<ul><li>- [ ] Done</li></ul>|283|[Comparing Strings](http://codeforces.com/problemset/problem/186/A)|Codeforces||Codeforces Round #118 (Div. 2)|2|\n|<ul><li>- [ ] Done</li></ul>|284|[Little Elephant and Rozdil](http://codeforces.com/problemset/problem/205/A)|Codeforces||Codeforces Round #129 (Div. 2)|2|\n|<ul><li>- [ ] Done</li></ul>|285|[Bicycle Chain](http://codeforces.com/problemset/problem/215/A)|Codeforces||Codeforces Round #132 (Div. 2)|2|\n|<ul><li>- [ ] Done</li></ul>|286|[Little Elephant and Function](http://codeforces.com/problemset/problem/221/A)|Codeforces||Codeforces Round #136 (Div. 2)|2|\n|<ul><li>- [ ] Done</li></ul>|287|[Shooshuns and Sequence ](http://codeforces.com/problemset/problem/222/A)|Codeforces||Codeforces Round #137 (Div. 2)|2|\n|<ul><li>- [ ] Done</li></ul>|288|[Two Bags of Potatoes](http://codeforces.com/problemset/problem/239/A)|Codeforces||Codeforces Round #148 (Div. 2)|2|\n|<ul><li>- [ ] Done</li></ul>|289|[Buggy Sorting](http://codeforces.com/problemset/problem/246/A)|Codeforces||Codeforces Round #151 (Div. 2)|2|\n|<ul><li>- [ ] Done</li></ul>|290|[Cupboards](http://codeforces.com/problemset/problem/248/A)|Codeforces||Codeforces Round #152 (Div. 2)|2|\n|<ul><li>- [ ] Done</li></ul>|291|[Boys and Girls](http://codeforces.com/problemset/problem/253/A)|Codeforces||Codeforces Round #154 (Div. 2)|2|\n|<ul><li>- [ ] Done</li></ul>|292|[Little Elephant and Chess](http://codeforces.com/problemset/problem/259/A)|Codeforces||Codeforces Round #157 (Div. 2)|2|\n|<ul><li>- [ ] Done</li></ul>|293|[Adding Digits](http://codeforces.com/problemset/problem/260/A)|Codeforces||Codeforces Round #158 (Div. 2)|2|\n|<ul><li>- [ ] Done</li></ul>|294|[IQ Test](http://codeforces.com/problemset/problem/287/A)|Codeforces||Codeforces Round #176 (Div. 2)|2|\n|<ul><li>- [ ] Done</li></ul>|295|[Yaroslav and Permutations](http://codeforces.com/problemset/problem/296/A)|Codeforces||Codeforces Round #179 (Div. 2)|2|\n|<ul><li>- [ ] Done</li></ul>|296|[Eugeny and Array](http://codeforces.com/problemset/problem/302/A)|Codeforces||Codeforces Round #182 (Div. 2)|2|\n|<ul><li>- [ ] Done</li></ul>|297|[Ciel and Dancing](http://codeforces.com/problemset/problem/322/A)|Codeforces||Codeforces Round #190 (Div. 2)|2|\n|<ul><li>- [ ] Done</li></ul>|298|[Vasily the Bear and Triangle](http://codeforces.com/problemset/problem/336/A)|Codeforces||Codeforces Round #195 (Div. 2)|2|\n|<ul><li>- [ ] Done</li></ul>|299|[The Wall](http://codeforces.com/problemset/problem/340/A)|Codeforces||Codeforces Round #198 (Div. 2)|2|\n|<ul><li>- [ ] Done</li></ul>|300|[Xenia and Divisors](http://codeforces.com/problemset/problem/342/A)|Codeforces||Codeforces Round #199 (Div. 2)|2|\n|<ul><li>- [ ] Done</li></ul>|301|[Difference Row](http://codeforces.com/problemset/problem/347/A)|Codeforces||Codeforces Round #201 (Div. 2)|2|\n|<ul><li>- [ ] Done</li></ul>|302|[Vasya and Digital Root](http://codeforces.com/problemset/problem/355/A)|Codeforces||Codeforces Round #206 (Div. 2)|2|\n|<ul><li>- [ ] Done</li></ul>|303|[Group of Students](http://codeforces.com/problemset/problem/357/A)|Codeforces||Codeforces Round #207 (Div. 2)|2|\n|<ul><li>- [ ] Done</li></ul>|304|[Dima and Continuous Line](http://codeforces.com/problemset/problem/358/A)|Codeforces||Codeforces Round #208 (Div. 2)|2|\n|<ul><li>- [ ] Done</li></ul>|305|[Table](http://codeforces.com/problemset/problem/359/A)|Codeforces||Codeforces Round #209 (Div. 2)|2|\n|<ul><li>- [ ] Done</li></ul>|306|[Levko and Table](http://codeforces.com/problemset/problem/361/A)|Codeforces||Codeforces Round #210 (Div. 2)|2|\n|<ul><li>- [ ] Done</li></ul>|307|[Soroban](http://codeforces.com/problemset/problem/363/A)|Codeforces||Codeforces Round #211 (Div. 2)|2|\n|<ul><li>- [ ] Done</li></ul>|308|[Good Number](http://codeforces.com/problemset/problem/365/A)|Codeforces||Codeforces Round #213 (Div. 2)|2|\n|<ul><li>- [ ] Done</li></ul>|309|[Sereja and Coat Rack](http://codeforces.com/problemset/problem/368/A)|Codeforces||Codeforces Round #215 (Div. 2)|2|\n|<ul><li>- [ ] Done</li></ul>|310|[Collecting Beats is Fun](http://codeforces.com/problemset/problem/373/A)|Codeforces||Codeforces Round #219 (Div. 2)|2|\n|<ul><li>- [ ] Done</li></ul>|311|[Lever](http://codeforces.com/problemset/problem/376/A)|Codeforces||Codeforces Round #221 (Div. 2)|2|\n|<ul><li>- [ ] Done</li></ul>|312|[Ksenia and Pan Scales](http://codeforces.com/problemset/problem/382/A)|Codeforces||Codeforces Round #224 (Div. 2)|2|\n|<ul><li>- [ ] Done</li></ul>|313|[George and Sleep](http://codeforces.com/problemset/problem/387/A)|Codeforces||Codeforces Round #227 (Div. 2)|2|\n|<ul><li>- [ ] Done</li></ul>|314|[Inna and Choose Options](http://codeforces.com/problemset/problem/400/A)|Codeforces||Codeforces Round #234 (Div. 2)|2|\n|<ul><li>- [ ] Done</li></ul>|315|[Line to Cashier](http://codeforces.com/problemset/problem/408/A)|Codeforces||Codeforces Round #239 (Div. 2)|2|\n|<ul><li>- [ ] Done</li></ul>|316|[Mashmokh and Lights](http://codeforces.com/problemset/problem/415/A)|Codeforces||Codeforces Round #240 (Div. 2)|2|\n|<ul><li>- [ ] Done</li></ul>|317|[Squats](http://codeforces.com/problemset/problem/424/A)|Codeforces||Codeforces Round #242 (Div. 2)|2|\n|<ul><li>- [ ] Done</li></ul>|318|[Sereja and Mugs](http://codeforces.com/problemset/problem/426/A)|Codeforces||Codeforces Round #243 (Div. 2)|2|\n|<ul><li>- [ ] Done</li></ul>|319|[Kitahara Haruki's Gift](http://codeforces.com/problemset/problem/433/A)|Codeforces||Codeforces Round #248 (Div. 2)|2|\n|<ul><li>- [ ] Done</li></ul>|320|[The Child and Homework](http://codeforces.com/problemset/problem/437/A)|Codeforces||Codeforces Round #250 (Div. 2)|2|\n|<ul><li>- [ ] Done</li></ul>|321|[DZY Loves Hash](http://codeforces.com/problemset/problem/447/A)|Codeforces||Codeforces Round #255 (Div. 2)|2|\n|<ul><li>- [ ] Done</li></ul>|322|[Factory](http://codeforces.com/problemset/problem/485/A)|Codeforces||Codeforces Round #276 (Div. 2)|2|\n|<ul><li>- [ ] Done</li></ul>|323|[SwapSort](http://codeforces.com/problemset/problem/489/A)|Codeforces||Codeforces Round #277.5 (Div. 2)|2|\n|<ul><li>- [ ] Done</li></ul>|324|[Vasya and Football](http://codeforces.com/problemset/problem/493/A)|Codeforces||Codeforces Round #281 (Div. 2)|2|\n|<ul><li>- [ ] Done</li></ul>|325|[Digital Counter](http://codeforces.com/problemset/problem/495/A)|Codeforces||Codeforces Round #282 (Div. 2)|2|\n|<ul><li>- [ ] Done</li></ul>|326|[Mr. Kitayuta's Gift](http://codeforces.com/problemset/problem/505/A)|Codeforces||Codeforces Round #286 (Div. 1) & Codeforces Round #286 (Div. 2) & Codeforces Round #286 (Div. 1) & Codeforces Round #286 (Div. 2)|2|\n|<ul><li>- [ ] Done</li></ul>|327|[Pasha and Pixels](http://codeforces.com/problemset/problem/508/A)|Codeforces||Codeforces Round #288 (Div. 2)|2|\n|<ul><li>- [ ] Done</li></ul>|328|[Vitaly and Strings](http://codeforces.com/problemset/problem/518/A)|Codeforces||Codeforces Round #293 (Div. 2)|2|\n|<ul><li>- [ ] Done</li></ul>|329|[Cutting Banner](http://codeforces.com/problemset/problem/538/A)|Codeforces||Codeforces Round #300|2|\n|<ul><li>- [ ] Done</li></ul>|330|[Set of Strings](http://codeforces.com/problemset/problem/544/A)|Codeforces||Codeforces Round #302 (Div. 2)|2|\n|<ul><li>- [ ] Done</li></ul>|331|[PawnChess](http://codeforces.com/problemset/problem/592/A)|Codeforces||Codeforces Round #328 (Div. 2)|2|\n|<ul><li>- [ ] Done</li></ul>|332|[2Char](http://codeforces.com/problemset/problem/593/A)|Codeforces||Codeforces Round #329 (Div. 2)|2|\n|<ul><li>- [ ] Done</li></ul>|333|[Wilbur and Swimming Pool](http://codeforces.com/problemset/problem/596/A)|Codeforces||Codeforces Round #331 (Div. 2)|2|\n|<ul><li>- [ ] Done</li></ul>|334|[Magic Spheres](http://codeforces.com/problemset/problem/606/A)|Codeforces||Codeforces Round #335 (Div. 2)|2|\n|<ul><li>- [ ] Done</li></ul>|335|[Saitama Destroys Hotel](http://codeforces.com/problemset/problem/608/A)|Codeforces||Codeforces Round #336 (Div. 2)|2|\n|<ul><li>- [ ] Done</li></ul>|336|[Link/Cut Tree](http://codeforces.com/problemset/problem/614/A)|Codeforces||Codeforces Round #339 (Div. 2)|2|\n|<ul><li>- [ ] Done</li></ul>|337|[Interview](http://codeforces.com/problemset/problem/631/A)|Codeforces||Codeforces Round #344 (Div. 2)|2|\n|<ul><li>- [ ] Done</li></ul>|338|[Little Artem and Presents](http://codeforces.com/problemset/problem/669/A)|Codeforces||Codeforces Round #348 (VK Cup 2016 Round 2, Div. 2 Edition)|2|\n|<ul><li>- [ ] Done</li></ul>|339|[Pouring Rain](http://codeforces.com/problemset/problem/667/A)|Codeforces||Codeforces Round #349 (Div. 2)|2|\n|<ul><li>- [ ] Done</li></ul>|340|[Bear and Game](http://codeforces.com/problemset/problem/673/A)|Codeforces||Codeforces Round #351 (VK Cup 2016 Round 3, Div. 2 Edition)|2|\n|<ul><li>- [ ] Done</li></ul>|341|[Interview with Oleg](http://codeforces.com/problemset/problem/729/A)|Codeforces||Technocup 2017 - Elimination Round 2|2|\n|<ul><li>- [ ] Done</li></ul>|342|[Alyona and copybooks](http://codeforces.com/problemset/problem/740/A)|Codeforces||Codeforces Round #381 (Div. 2)|2|\n|<ul><li>- [ ] Done</li></ul>|343|[Alyona and flowers](http://codeforces.com/problemset/problem/740/B)|Codeforces||Codeforces Round #381 (Div. 2)|2|\n|<ul><li>- [ ] Done</li></ul>|344|[Fenwick Trees](http://www.spoj.com/problems/FENTREE/)|SPOJ|||2|\n|<ul><li>- [ ] Done</li></ul>|345|[Display Size](http://codeforces.com/problemset/problem/747/A)|Codeforces||Codeforces Round #387 (Div. 2)|2|\n|<ul><li>- [ ] Done</li></ul>|346|[Santa Claus and a Place in a Class](http://codeforces.com/problemset/problem/748/A)|Codeforces||Technocup 2017 - Elimination Round 3|2|\n|<ul><li>- [ ] Done</li></ul>|347|[Lesha and array splitting](http://codeforces.com/problemset/problem/754/A)|Codeforces||Codeforces Round #390 (Div. 2)|2|\n|<ul><li>- [ ] Done</li></ul>|348|[Petr and a calendar](http://codeforces.com/problemset/problem/760/A)|Codeforces||Codeforces Round #393 (Div. 2) (8VC Venture Cup 2017 - Final Round Div. 2 Edition)|2|\n|<ul><li>- [ ] Done</li></ul>|349|[Neverending competitions](http://codeforces.com/problemset/problem/765/A)|Codeforces||Codeforces Round #397 by Kaspersky Lab and Barcelona Bootcamp (Div. 1 + Div. 2 combined)|2|\n|<ul><li>- [ ] Done</li></ul>|350|[Sagheer and Crossroads](http://codeforces.com/problemset/problem/812/A)|Codeforces||Codeforces Round #417 (Div. 2)|2|\n|<ul><li>- [ ] Done</li></ul>|351|[Straight <<A>>](http://codeforces.com/problemset/problem/810/A)|Codeforces||Codeforces Round #415 (Div. 2)|2|\n|<ul><li>- [ ] Done</li></ul>|352|[Bank Robbery](http://codeforces.com/problemset/problem/794/A)|Codeforces||Tinkoff Challenge - Final Round (Codeforces Round #414, rated, Div. 1 + Div. 2)|2|\n|<ul><li>- [ ] Done</li></ul>|353|[Carrot Cakes](http://codeforces.com/problemset/problem/799/A)|Codeforces||Playrix Codescapes Cup (Codeforces Round #413, rated, Div. 1 + Div. 2)|2|\n|<ul><li>- [ ] Done</li></ul>|354|[Is it rated?](http://codeforces.com/problemset/problem/807/A)|Codeforces||Codeforces Round #412 (rated, Div. 2, base on VK Cup 2017 Round 3)|2|\n|<ul><li>- [ ] Done</li></ul>|355|[Vicious Keyboard](http://codeforces.com/problemset/problem/801/A)|Codeforces||Codeforces Round #409 (rated, Div. 2, based on VK Cup 2017 Round 2)|2|\n|<ul><li>- [ ] Done</li></ul>|356|[Chess Tourney](http://codeforces.com/problemset/problem/845/A)|Codeforces||Educational Codeforces Round 27|2|\n|<ul><li>- [ ] Done</li></ul>|357|[Restaurant Tables](http://codeforces.com/problemset/problem/828/A)|Codeforces||Codeforces Round #423 (Div. 2, rated, based on VK Cup Finals)|2|\n|<ul><li>- [ ] Done</li></ul>|358|[Mister B and Book Reading](http://codeforces.com/problemset/problem/820/A)|Codeforces||Codeforces Round #421 (Div. 2)|2|\n|<ul><li>- [ ] Done</li></ul>|359|[Okabe and Future Gadget Laboratory](http://codeforces.com/problemset/problem/821/A)|Codeforces||Codeforces Round #420 (Div. 2)|2|\n|<ul><li>- [ ] Done</li></ul>|360|[Chores](http://codeforces.com/problemset/problem/873/A)|Codeforces||Educational Codeforces Round 30|2|\n|<ul><li>- [ ] Done</li></ul>|361|[Bark to Unlock](http://codeforces.com/problemset/problem/868/A)|Codeforces||Codeforces Round #438 by Sberbank and Barcelona Bootcamp (Div. 1 + Div. 2 combined)|2|\n|<ul><li>- [ ] Done</li></ul>|362|[Chess For Three](http://codeforces.com/problemset/problem/893/A)|Codeforces||Educational Codeforces Round 33 (Rated for Div. 2)|2|\n|<ul><li>- [ ] Done</li></ul>|363|[Points on Line](http://codeforces.com/problemset/problem/251/A)|Codeforces||Codeforces Round #153 (Div. 1) & Codeforces Round #153 (Div. 2)|2|\n|<ul><li>- [ ] Done</li></ul>|364|[Book Replacement](https://icpcarchive.ecs.baylor.edu/index.php?option=onlinejudge&page=show_problem&problem=1401)|Live Archive|2005|Asia - Tokyo|2|\n|<ul><li>- [ ] Done</li></ul>|365|[Kalevitch and Chess](http://codeforces.com/problemset/problem/7/A)|Codeforces||Codeforces Beta Round #7|3|\n|<ul><li>- [ ] Done</li></ul>|366|[Increasing Sequence](http://codeforces.com/problemset/problem/11/A)|Codeforces||Codeforces Beta Round #11|3|\n|<ul><li>- [ ] Done</li></ul>|367|[Super Agent](http://codeforces.com/problemset/problem/12/A)|Codeforces||Codeforces Beta Round #12 (Div 2 Only)|3|\n|<ul><li>- [ ] Done</li></ul>|368|[Numbers](http://codeforces.com/problemset/problem/13/A)|Codeforces||Codeforces Beta Round #13|3|\n|<ul><li>- [ ] Done</li></ul>|369|[Letter](http://codeforces.com/problemset/problem/14/A)|Codeforces||Codeforces Beta Round #14 (Div. 2)|3|\n|<ul><li>- [ ] Done</li></ul>|370|[Noldbach problem](http://codeforces.com/problemset/problem/17/A)|Codeforces||Codeforces Beta Round #17|3|\n|<ul><li>- [ ] Done</li></ul>|371|[Worms Evolution](http://codeforces.com/problemset/problem/31/A)|Codeforces||Codeforces Beta Round #31 (Div. 2, Codeforces format)|3|\n|<ul><li>- [ ] Done</li></ul>|372|[Reconnaissance](http://codeforces.com/problemset/problem/32/A)|Codeforces||Codeforces Beta Round #32 (Div. 2, Codeforces format)|3|\n|<ul><li>- [ ] Done</li></ul>|373|[Ball Game](http://codeforces.com/problemset/problem/46/A)|Codeforces||School Personal Contest #2 (Winter Computer School 2010/11) - Codeforces Beta Round #43 (ACM-ICPC Rules)|3|\n|<ul><li>- [ ] Done</li></ul>|374|[Sleuth](http://codeforces.com/problemset/problem/49/A)|Codeforces||Codeforces Beta Round #46 (Div. 2)|3|\n|<ul><li>- [ ] Done</li></ul>|375|[Bar](http://codeforces.com/problemset/problem/56/A)|Codeforces||Codeforces Beta Round #52 (Div. 2)|3|\n|<ul><li>- [ ] Done</li></ul>|376|[Petya and Java](http://codeforces.com/problemset/problem/66/A)|Codeforces||Codeforces Beta Round #61 (Div. 2)|3|\n|<ul><li>- [ ] Done</li></ul>|377|[Room Leader](http://codeforces.com/problemset/problem/74/A)|Codeforces||Codeforces Beta Round #68|3|\n|<ul><li>- [ ] Done</li></ul>|378|[Haiku](http://codeforces.com/problemset/problem/78/A)|Codeforces||Codeforces Beta Round #70 (Div. 2)|3|\n|<ul><li>- [ ] Done</li></ul>|379|[Help Far Away Kingdom](http://codeforces.com/problemset/problem/99/A)|Codeforces||Codeforces Beta Round #78 (Div. 2 Only)|3|\n|<ul><li>- [ ] Done</li></ul>|380|[Card Game](http://codeforces.com/problemset/problem/106/A)|Codeforces||Codeforces Beta Round #82 (Div. 2)|3|\n|<ul><li>- [ ] Done</li></ul>|381|[Postcards and photos](http://codeforces.com/problemset/problem/137/A)|Codeforces||Codeforces Beta Round #98 (Div. 2)|3|\n|<ul><li>- [ ] Done</li></ul>|382|[New Year Table](http://codeforces.com/problemset/problem/140/A)|Codeforces||Codeforces Round #100|3|\n|<ul><li>- [ ] Done</li></ul>|383|[Vasya and the Bus](http://codeforces.com/problemset/problem/190/A)|Codeforces||Codeforces Round #120 (Div. 2)|3|\n|<ul><li>- [ ] Done</li></ul>|384|[Funky Numbers](http://codeforces.com/problemset/problem/192/A)|Codeforces||Codeforces Round #121 (Div. 2)|3|\n|<ul><li>- [ ] Done</li></ul>|385|[Exams](http://codeforces.com/problemset/problem/194/A)|Codeforces||Codeforces Round #122 (Div. 2)|3|\n|<ul><li>- [ ] Done</li></ul>|386|[Let's Watch Football](http://codeforces.com/problemset/problem/195/A)|Codeforces||Codeforces Round #123 (Div. 2)|3|\n|<ul><li>- [ ] Done</li></ul>|387|[LLPS](http://codeforces.com/problemset/problem/202/A)|Codeforces||Codeforces Round #127 (Div. 2)|3|\n|<ul><li>- [ ] Done</li></ul>|388|[Two Problems](http://codeforces.com/problemset/problem/203/A)|Codeforces||Codeforces Round #128 (Div. 2)|3|\n|<ul><li>- [ ] Done</li></ul>|389|[Tiling with Hexagons](http://codeforces.com/problemset/problem/216/A)|Codeforces||Codeforces Round #133 (Div. 2)|3|\n|<ul><li>- [ ] Done</li></ul>|390|[Dice Tower](http://codeforces.com/problemset/problem/225/A)|Codeforces||Codeforces Round #139 (Div. 2)|3|\n|<ul><li>- [ ] Done</li></ul>|391|[Heads or Tails](http://codeforces.com/problemset/problem/242/A)|Codeforces||Codeforces Round #149 (Div. 2)|3|\n|<ul><li>- [ ] Done</li></ul>|392|[Dividing Orange](http://codeforces.com/problemset/problem/244/A)|Codeforces||Codeforces Round #150 (Div. 2)|3|\n|<ul><li>- [ ] Done</li></ul>|393|[Little Xor](http://codeforces.com/problemset/problem/252/A)|Codeforces||Codeforces Round #153 (Div. 2)|3|\n|<ul><li>- [ ] Done</li></ul>|394|[Cards with Numbers](http://codeforces.com/problemset/problem/254/A)|Codeforces||Codeforces Round #155 (Div. 2)|3|\n|<ul><li>- [ ] Done</li></ul>|395|[Sockets](http://codeforces.com/problemset/problem/257/A)|Codeforces||Codeforces Round #159 (Div. 2)|3|\n|<ul><li>- [ ] Done</li></ul>|396|[Point on Spiral](http://codeforces.com/problemset/problem/279/A)|Codeforces||Codeforces Round #171 (Div. 2)|3|\n|<ul><li>- [ ] Done</li></ul>|397|[Cows and Primitive Roots](http://codeforces.com/problemset/problem/284/A)|Codeforces||Codeforces Round #174 (Div. 2)|3|\n|<ul><li>- [ ] Done</li></ul>|398|[Polo the Penguin and Segments ](http://codeforces.com/problemset/problem/289/A)|Codeforces||Codeforces Round #177 (Div. 2)|3|\n|<ul><li>- [ ] Done</li></ul>|399|[Snow Footprints](http://codeforces.com/problemset/problem/298/A)|Codeforces||Codeforces Round #180 (Div. 2)|3|\n|<ul><li>- [ ] Done</li></ul>|400|[Pythagorean Theorem II](http://codeforces.com/problemset/problem/304/A)|Codeforces||Codeforces Round #183 (Div. 2)|3|\n|<ul><li>- [ ] Done</li></ul>|401|[Whose sentence is it?](http://codeforces.com/problemset/problem/312/A)|Codeforces||Codeforces Round #185 (Div. 2)|3|\n|<ul><li>- [ ] Done</li></ul>|402|[Sereja and Bottles](http://codeforces.com/problemset/problem/315/A)|Codeforces||Codeforces Round #187 (Div. 2)|3|\n|<ul><li>- [ ] Done</li></ul>|403|[Down the Hatch!](http://codeforces.com/problemset/problem/332/A)|Codeforces||Codeforces Round #193 (Div. 2)|3|\n|<ul><li>- [ ] Done</li></ul>|404|[Dima and Guards](http://codeforces.com/problemset/problem/366/A)|Codeforces||Codeforces Round #214 (Div. 2)|3|\n|<ul><li>- [ ] Done</li></ul>|405|[Rook, Bishop and King](http://codeforces.com/problemset/problem/370/A)|Codeforces||Codeforces Round #217 (Div. 2)|3|\n|<ul><li>- [ ] Done</li></ul>|406|[K-Periodic Array](http://codeforces.com/problemset/problem/371/A)|Codeforces||Codeforces Round #218 (Div. 2)|3|\n|<ul><li>- [ ] Done</li></ul>|407|[Nuts](http://codeforces.com/problemset/problem/402/A)|Codeforces||Codeforces Round #236 (Div. 2)|3|\n|<ul><li>- [ ] Done</li></ul>|408|[Guess a number!](http://codeforces.com/problemset/problem/416/A)|Codeforces||Codeforces Round #241 (Div. 2)|3|\n|<ul><li>- [ ] Done</li></ul>|409|[Music](http://codeforces.com/problemset/problem/569/A)|Codeforces||Codeforces Round #315 (Div. 2)|3|\n|<ul><li>- [ ] Done</li></ul>|410|[Guest From the Past](http://codeforces.com/problemset/problem/625/A)|Codeforces||Codeforces Round #342 (Div. 2)|3|\n|<ul><li>- [ ] Done</li></ul>|411|[Mike and Cellphone](http://codeforces.com/problemset/problem/689/A)|Codeforces||Codeforces Round #361 (Div. 2)|3|\n|<ul><li>- [ ] Done</li></ul>|412|[Array](http://codeforces.com/problemset/problem/224/B)|Codeforces||Codeforces Round #138 (Div. 2)|3|\n|<ul><li>- [ ] Done</li></ul>|413|[The Map](http://www.spoj.com/problems/MAP/)|SPOJ|||3|\n|<ul><li>- [ ] Done</li></ul>|414|[Johnny and the Watermelon Plantation](http://www.spoj.com/problems/WMELON/)|SPOJ|||3|\n|<ul><li>- [ ] Done</li></ul>|415|[Train and Peter](http://codeforces.com/problemset/problem/8/A)|Codeforces||Codeforces Beta Round #8|4|\n|<ul><li>- [ ] Done</li></ul>|416|[Power Consumption Calculation](http://codeforces.com/problemset/problem/10/A)|Codeforces||Codeforces Beta Round #10|4|\n|<ul><li>- [ ] Done</li></ul>|417|[Triangle](http://codeforces.com/problemset/problem/18/A)|Codeforces||Codeforces Beta Round #18 (Div. 2 Only)|4|\n|<ul><li>- [ ] Done</li></ul>|418|[BerOS file system](http://codeforces.com/problemset/problem/20/A)|Codeforces||Codeforces Alpha Round #20 (Codeforces format)|4|\n|<ul><li>- [ ] Done</li></ul>|419|[You're Given a String...](http://codeforces.com/problemset/problem/23/A)|Codeforces||Codeforces Beta Round #23|4|\n|<ul><li>- [ ] Done</li></ul>|420|[Ring road](http://codeforces.com/problemset/problem/24/A)|Codeforces||Codeforces Beta Round #24|4|\n|<ul><li>- [ ] Done</li></ul>|421|[Spit Problem](http://codeforces.com/problemset/problem/29/A)|Codeforces||Codeforces Beta Round #29 (Div. 2, Codeforces format)|4|\n|<ul><li>- [ ] Done</li></ul>|422|[Shell Game](http://codeforces.com/problemset/problem/35/A)|Codeforces||Codeforces Beta Round #35 (Div. 2)|4|\n|<ul><li>- [ ] Done</li></ul>|423|[Autocomplete](http://codeforces.com/problemset/problem/53/A)|Codeforces||Codeforces Beta Round #49 (Div. 2)|4|\n|<ul><li>- [ ] Done</li></ul>|424|[Where Are My Flakes?](http://codeforces.com/problemset/problem/60/A)|Codeforces||Codeforces Beta Round #56|4|\n|<ul><li>- [ ] Done</li></ul>|425|[A Student's Dream](http://codeforces.com/problemset/problem/62/A)|Codeforces||Codeforces Beta Round #58|4|\n|<ul><li>- [ ] Done</li></ul>|426|[Irrational problem](http://codeforces.com/problemset/problem/68/A)|Codeforces||Codeforces Beta Round #62|4|\n|<ul><li>- [ ] Done</li></ul>|427|[Cookies](http://codeforces.com/problemset/problem/70/A)|Codeforces||Codeforces Beta Round #64|4|\n|<ul><li>- [ ] Done</li></ul>|428|[Bus Game](http://codeforces.com/problemset/problem/79/A)|Codeforces||Codeforces Beta Round #71|4|\n|<ul><li>- [ ] Done</li></ul>|429|[Chord](http://codeforces.com/problemset/problem/88/A)|Codeforces||Codeforces Beta Round #73 (Div. 2 Only)|4|\n|<ul><li>- [ ] Done</li></ul>|430|[Cableway](http://codeforces.com/problemset/problem/90/A)|Codeforces||Codeforces Beta Round #74 (Div. 2 Only)|4|\n|<ul><li>- [ ] Done</li></ul>|431|[Plate Game](http://codeforces.com/problemset/problem/197/A)|Codeforces||Codeforces Round #124 (Div. 2)|4|\n|<ul><li>- [ ] Done</li></ul>|432|[Mountain Scenery](http://codeforces.com/problemset/problem/218/A)|Codeforces||Codeforces Round #134 (Div. 2)|4|\n|<ul><li>- [ ] Done</li></ul>|433|[Where do I Turn?](http://codeforces.com/problemset/problem/227/A)|Codeforces||Codeforces Round #140 (Div. 2)|4|\n|<ul><li>- [ ] Done</li></ul>|434|[Lefthanders and Righthanders ](http://codeforces.com/problemset/problem/234/A)|Codeforces||Codeforces Round #145 (Div. 2, ACM-ICPC Rules)|4|\n|<ul><li>- [ ] Done</li></ul>|435|[Strange Addition](http://codeforces.com/problemset/problem/305/A)|Codeforces||Codeforces Round #184 (Div. 2)|4|\n|<ul><li>- [ ] Done</li></ul>|436|[Two Semiknights Meet](http://codeforces.com/problemset/problem/362/A)|Codeforces||Codeforces Round #212 (Div. 2)|4|\n|<ul><li>- [ ] Done</li></ul>|437|[Nineteen](http://codeforces.com/problemset/problem/393/A)|Codeforces||Codeforces Round #230 (Div. 2)|4|\n|<ul><li>- [ ] Done</li></ul>|438|[K-Palindrome](p?ID=276)|A2 Online Judge|||4|\n|<ul><li>- [ ] Done</li></ul>|439|[Binary Search](https://icpcarchive.ecs.baylor.edu/index.php?option=onlinejudge&page=show_problem&problem=221)|Live Archive|2000|Europe - Northeastern|4|\n|<ul><li>- [ ] Done</li></ul>|440|[Cottage Village](http://codeforces.com/problemset/problem/15/A)|Codeforces||Codeforces Beta Round #15|5|\n|<ul><li>- [ ] Done</li></ul>|441|[World Football Cup](http://codeforces.com/problemset/problem/19/A)|Codeforces||Codeforces Beta Round #19|5|\n|<ul><li>- [ ] Done</li></ul>|442|[Accounting](http://codeforces.com/problemset/problem/30/A)|Codeforces||Codeforces Beta Round #30 (Codeforces format)|5|\n|<ul><li>- [ ] Done</li></ul>|443|[What is for dinner?](http://codeforces.com/problemset/problem/33/A)|Codeforces||Codeforces Beta Round #33 (Codeforces format)|5|\n|<ul><li>- [ ] Done</li></ul>|444|[Extra-terrestrial Intelligence](http://codeforces.com/problemset/problem/36/A)|Codeforces||Codeforces Beta Round #36|5|\n|<ul><li>- [ ] Done</li></ul>|445|[Find Color](http://codeforces.com/problemset/problem/40/A)|Codeforces||Codeforces Beta Round #39|5|\n|<ul><li>- [ ] Done</li></ul>|446|[Guilty --- to the kitchen!](http://codeforces.com/problemset/problem/42/A)|Codeforces||Codeforces Beta Round #41|5|\n|<ul><li>- [ ] Done</li></ul>|447|[Rock-paper-scissors](http://codeforces.com/problemset/problem/48/A)|Codeforces||School Personal Contest #3 (Winter Computer School 2010/11) - Codeforces Beta Round #45 (ACM-ICPC Rules)|5|\n|<ul><li>- [ ] Done</li></ul>|448|[Flea travel](http://codeforces.com/problemset/problem/55/A)|Codeforces||Codeforces Beta Round #51|5|\n|<ul><li>- [ ] Done</li></ul>|449|[Square Earth?](http://codeforces.com/problemset/problem/57/A)|Codeforces||Codeforces Beta Round #53|5|\n|<ul><li>- [ ] Done</li></ul>|450|[Clothes](http://codeforces.com/problemset/problem/102/A)|Codeforces||Codeforces Beta Round #79 (Div. 2 Only)|5|\n|<ul><li>- [ ] Done</li></ul>|451|[Elevator](http://codeforces.com/problemset/problem/117/A)|Codeforces||Codeforces Beta Round #88|5|\n|<ul><li>- [ ] Done</li></ul>|452|[Robot Bicorn Attack](http://codeforces.com/problemset/problem/175/A)|Codeforces||Codeforces Round #115|5|\n|<ul><li>- [ ] Done</li></ul>|453|[Inna and Pink Pony](http://codeforces.com/problemset/problem/374/A)|Codeforces||Codeforces Round #220 (Div. 2)|5|\n|<ul><li>- [ ] Done</li></ul>|454|[Inna and Alarm Clock](http://codeforces.com/problemset/problem/390/A)|Codeforces||Codeforces Round #229 (Div. 2)|5|\n|<ul><li>- [ ] Done</li></ul>|455|[Counting Sticks](http://codeforces.com/problemset/problem/394/A)|Codeforces||Codeforces Round #231 (Div. 2)|5|\n|<ul><li>- [ ] Done</li></ul>|456|[Pages](http://codeforces.com/problemset/problem/399/A)|Codeforces||Codeforces Round #233 (Div. 2)|5|\n|<ul><li>- [ ] Done</li></ul>|457|[Points and Segments (easy)](http://codeforces.com/problemset/problem/430/A)|Codeforces||Codeforces Round #245 (Div. 2)|5|\n|<ul><li>- [ ] Done</li></ul>|458|[April Fools' Problem (easy)](http://codeforces.com/problemset/problem/802/M)|Codeforces||Helvetic Coding Contest 2017 online mirror (teams allowed, unrated)|5|\n|<ul><li>- [ ] Done</li></ul>|459|[Chef and The Recursive Algorithm](http://www.codechef.com/problems/DFSGRID)|CodeChef|||5|\n|<ul><li>- [ ] Done</li></ul>|460|[Game with String](http://codeforces.com/problemset/problem/930/B)|Codeforces||Codeforces Round #468 (Div. 1, based on Technocup 2018 Final Round) & Codeforces Round #468 (Div. 2, based on Technocup 2018 Final Round)|5|\n|<ul><li>- [ ] Done</li></ul>|461|[InfiniteSequence](http://community.topcoder.com/stat?c=problem_statement&pm=9837)|TopCoder||SRM 413 - Div2 hard] (13504)|5|\n|<ul><li>- [ ] Done</li></ul>|462|[Cheaterius's Problem](http://codeforces.com/problemset/problem/51/A)|Codeforces||Codeforces Beta Round #48|6|\n|<ul><li>- [ ] Done</li></ul>|463|[Presents](http://codeforces.com/problemset/problem/54/A)|Codeforces||Codeforces Beta Round #50|6|\n|<ul><li>- [ ] Done</li></ul>|464|[Harry Potter and Three Spells](http://codeforces.com/problemset/problem/65/A)|Codeforces||Codeforces Beta Round #60|6|\n|<ul><li>- [ ] Done</li></ul>|465|[The Elder Trolls IV: Oblivon](http://codeforces.com/problemset/problem/73/A)|Codeforces||Codeforces Beta Round #66|6|\n|<ul><li>- [ ] Done</li></ul>|466|[Transmigration](http://codeforces.com/problemset/problem/105/A)|Codeforces||Codeforces Beta Round #81|6|\n|<ul><li>- [ ] Done</li></ul>|467|[On Segment's Own Points](http://codeforces.com/problemset/problem/397/A)|Codeforces||Codeforces Round #232 (Div. 2)|6|\n|<ul><li>- [ ] Done</li></ul>|468|[Grasshopper](https://uva.onlinejudge.org/index.php?option=onlinejudge&page=show_problem&problem=2752)|UVA|||6|\n|<ul><li>- [ ] Done</li></ul>|469|[Jabber ID](http://codeforces.com/problemset/problem/21/A)|Codeforces||Codeforces Alpha Round #21 (Codeforces format)|7|\n|<ul><li>- [ ] Done</li></ul>|470|[Bender Problem](http://codeforces.com/problemset/problem/28/A)|Codeforces||Codeforces Beta Round #28 (Codeforces format)|7|\n|<ul><li>- [ ] Done</li></ul>|471|[Vasya and Types](http://codeforces.com/problemset/problem/87/B)|Codeforces||Codeforces Beta Round #73 (Div. 1 Only) & Codeforces Beta Round #73 (Div. 2 Only)|7|\n|<ul><li>- [ ] Done</li></ul>|472|[Defragmentation](http://codeforces.com/problemset/problem/180/A)|Codeforces||Codeforces Round #116 (Div. 2, ACM-ICPC Rules)|8|\n|<ul><li>- [ ] Done</li></ul>|473|[Cinema](http://codeforces.com/problemset/problem/200/A)|Codeforces||Codeforces Round #126 (Div. 2)|8|\n|<ul><li>- [ ] Done</li></ul>|474|[Amr and Math](http://www.spoj.com/problems/AMRALAA/)|SPOJ|||8|\n|<ul><li>- [ ] Done</li></ul>|475|[Prefix Sums](http://codeforces.com/problemset/problem/837/F)|Codeforces||Educational Codeforces Round 26|8|\n|<ul><li>- [ ] Done</li></ul>|476|[Watermelons](http://acm.tju.edu.cn/toj/showp3253.html)|TJU|||8|\n|<ul><li>- [ ] Done</li></ul>|477|[Battlefield](http://codeforces.com/problemset/problem/182/A)|Codeforces||Codeforces Round #117 (Div. 2)|9|\n|<ul><li>- [ ] Done</li></ul>|478|[bfs](http://www.spoj.com/problems/BFSBFS/)|SPOJ|||10|\n"
  },
  {
    "path": "categories/009. Codeforces_Div._2_-_C_Problems/README.md",
    "content": "# 009. Codeforces_Div._2_-_C_Problems\n\n\n| Checkbox | ID | Problem Name|Online Judge|Contest|Difficulty Level|\n|:---:|:---:|:---:|:---:|:---:|:---:|\n|<ul><li>- [ ] Done</li></ul>|1|[Registration System](http://codeforces.com/problemset/problem/4/C)|Codeforces|Codeforces Beta Round #4 (Div. 2 Only)|1|\n|<ul><li>- [ ] Done</li></ul>|2|[Dijkstra?](http://codeforces.com/problemset/problem/20/C)|Codeforces|Codeforces Alpha Round #20 (Codeforces format)|1|\n|<ul><li>- [ ] Done</li></ul>|3|[Lucky Sum of Digits](http://codeforces.com/problemset/problem/109/A)|Codeforces|Codeforces Beta Round #84 (Div. 1 Only) & Codeforces Beta Round #84 (Div. 2 Only)|1|\n|<ul><li>- [ ] Done</li></ul>|4|[Party](http://codeforces.com/problemset/problem/115/A)|Codeforces|Codeforces Beta Round #87 (Div. 1 Only) & Codeforces Beta Round #87 (Div. 2 Only)|1|\n|<ul><li>- [ ] Done</li></ul>|5|[Ice Skating](http://codeforces.com/problemset/problem/217/A)|Codeforces|Codeforces Round #134 (Div. 1) & Codeforces Round #134 (Div. 2)|1|\n|<ul><li>- [ ] Done</li></ul>|6|[Little Elephant and Bits](http://codeforces.com/problemset/problem/258/A)|Codeforces|Codeforces Round #157 (Div. 1) & Codeforces Round #157 (Div. 2)|1|\n|<ul><li>- [ ] Done</li></ul>|7|[Little Girl and Maximum Sum](http://codeforces.com/problemset/problem/276/C)|Codeforces|Codeforces Round #169 (Div. 2)|1|\n|<ul><li>- [ ] Done</li></ul>|8|[Learning Languages](http://codeforces.com/problemset/problem/277/A)|Codeforces|Codeforces Round #170 (Div. 1) & Codeforces Round #170 (Div. 2)|1|\n|<ul><li>- [ ] Done</li></ul>|9|[Building Permutation](http://codeforces.com/problemset/problem/285/C)|Codeforces|Codeforces Round #175 (Div. 2)|1|\n|<ul><li>- [ ] Done</li></ul>|10|[Maze](http://codeforces.com/problemset/problem/377/A)|Codeforces|Codeforces Round #222 (Div. 1) & Codeforces Round #222 (Div. 2)|1|\n|<ul><li>- [ ] Done</li></ul>|11|[Team](http://codeforces.com/problemset/problem/401/C)|Codeforces|Codeforces Round #235 (Div. 2)|1|\n|<ul><li>- [ ] Done</li></ul>|12|[k-Tree](http://codeforces.com/problemset/problem/431/C)|Codeforces|Codeforces Round #247 (Div. 2)|1|\n|<ul><li>- [ ] Done</li></ul>|13|[Boredom](http://codeforces.com/problemset/problem/455/A)|Codeforces|Codeforces Round #260 (Div. 1) & Codeforces Round #260 (Div. 2)|1|\n|<ul><li>- [ ] Done</li></ul>|14|[Appleman and Toastman](http://codeforces.com/problemset/problem/461/A)|Codeforces|Codeforces Round #263 (Div. 1) & Codeforces Round #263 (Div. 2)|1|\n|<ul><li>- [ ] Done</li></ul>|15|[Number of Ways](http://codeforces.com/problemset/problem/466/C)|Codeforces|Codeforces Round #266 (Div. 2)|1|\n|<ul><li>- [ ] Done</li></ul>|16|[Table Decorations](http://codeforces.com/problemset/problem/478/C)|Codeforces|Codeforces Round #273 (Div. 2)|1|\n|<ul><li>- [ ] Done</li></ul>|17|[Exams](http://codeforces.com/problemset/problem/479/C)|Codeforces|Codeforces Round #274 (Div. 2) & Codeforces Round #274 (Div. 1)|1|\n|<ul><li>- [ ] Done</li></ul>|18|[Diverse Permutation](http://codeforces.com/problemset/problem/482/A)|Codeforces|Codeforces Round #275 (Div. 1) & Codeforces Round #275 (Div. 2)|1|\n|<ul><li>- [ ] Done</li></ul>|19|[Given Length and Sum of Digits...](http://codeforces.com/problemset/problem/489/C)|Codeforces|Codeforces Round #277.5 (Div. 2)|1|\n|<ul><li>- [ ] Done</li></ul>|20|[Drazil and Factorial](http://codeforces.com/problemset/problem/515/C)|Codeforces|Codeforces Round #292 (Div. 2) & Codeforces Round #292 (Div. 1)|1|\n|<ul><li>- [ ] Done</li></ul>|21|[A and B and Team Training](http://codeforces.com/problemset/problem/519/C)|Codeforces|Codeforces Round #294 (Div. 2)|1|\n|<ul><li>- [ ] Done</li></ul>|22|[Woodcutters](http://codeforces.com/problemset/problem/545/C)|Codeforces|Codeforces Round #303 (Div. 2)|1|\n|<ul><li>- [ ] Done</li></ul>|23|[Soldier and Cards](http://codeforces.com/problemset/problem/546/C)|Codeforces|Codeforces Round #304 (Div. 2)|1|\n|<ul><li>- [ ] Done</li></ul>|24|[Divisibility by Eight](http://codeforces.com/problemset/problem/550/C)|Codeforces|Codeforces Round #306 (Div. 2)|1|\n|<ul><li>- [ ] Done</li></ul>|25|[Gerald's Hexagon](http://codeforces.com/problemset/problem/559/A)|Codeforces|Codeforces Round #313 (Div. 1) & Codeforces Round #313 (Div. 2)|1|\n|<ul><li>- [ ] Done</li></ul>|26|[Bear and Poker](http://codeforces.com/problemset/problem/573/A)|Codeforces|Codeforces Round #318 [RussianCodeCup Thanks-Round] (Div. 1) & Codeforces Round #318 [RussianCodeCup Thanks-Round] (Div. 2)|1|\n|<ul><li>- [ ] Done</li></ul>|27|[Vasya and Petya's Game](http://codeforces.com/problemset/problem/576/A)|Codeforces|Codeforces Round #319 (Div. 1) & Codeforces Round #319 (Div. 2)|1|\n|<ul><li>- [ ] Done</li></ul>|28|[Kefa and Park](http://codeforces.com/problemset/problem/580/C)|Codeforces|Codeforces Round #321 (Div. 2)|1|\n|<ul><li>- [ ] Done</li></ul>|29|[Watchmen](http://codeforces.com/problemset/problem/650/A)|Codeforces|Codeforces Round #345 (Div. 1) & Codeforces Round #345 (Div. 2)|1|\n|<ul><li>- [ ] Done</li></ul>|30|[Tanya and Toys](http://codeforces.com/problemset/problem/659/C)|Codeforces|Codeforces Round #346 (Div. 2)|1|\n|<ul><li>- [ ] Done</li></ul>|31|[NP-Hard Problem](http://codeforces.com/problemset/problem/687/A)|Codeforces|Codeforces Round #360 (Div. 1) & Codeforces Round #360 (Div. 2)|1|\n|<ul><li>- [ ] Done</li></ul>|32|[Vacations](http://codeforces.com/problemset/problem/698/A)|Codeforces|Codeforces Round #363 (Div. 1) & Codeforces Round #363 (Div. 2)|1|\n|<ul><li>- [ ] Done</li></ul>|33|[Sanatorium](http://codeforces.com/problemset/problem/732/C)|Codeforces|Codeforces Round #377 (Div. 2)|1|\n|<ul><li>- [ ] Done</li></ul>|34|[Tetrahedron](http://codeforces.com/problemset/problem/166/E)|Codeforces|Codeforces Round #113 (Div. 2)|1|\n|<ul><li>- [ ] Done</li></ul>|35|[Dishonest Sellers](http://codeforces.com/problemset/problem/779/C)|Codeforces|Codeforces Round #402 (Div. 2)|1|\n|<ul><li>- [ ] Done</li></ul>|36|[Find Amir](http://codeforces.com/problemset/problem/804/A)|Codeforces|Codeforces Round #411 (Div. 1) & Codeforces Round #411 (Div. 2)|1|\n|<ul><li>- [ ] Done</li></ul>|37|[The Closest Pair Problem](https://uva.onlinejudge.org/index.php?option=onlinejudge&page=show_problem&problem=1186)|UVA||1|\n|<ul><li>- [ ] Done</li></ul>|38|[Classroom Watch](http://codeforces.com/problemset/problem/875/A)|Codeforces|Codeforces Round #441 (Div. 1, by Moscow Team Olympiad) & Codeforces Round #441 (Div. 2, by Moscow Team Olympiad)|1|\n|<ul><li>- [ ] Done</li></ul>|39|[Cards](http://codeforces.com/problemset/problem/701/A)|Codeforces|Codeforces Round #364 (Div. 2)|1|\n|<ul><li>- [ ] Done</li></ul>|40|[Alice, Bob and Chocolate](http://codeforces.com/problemset/problem/6/C)|Codeforces|Codeforces Beta Round #6 (Div. 2 Only)|2|\n|<ul><li>- [ ] Done</li></ul>|41|[Hexadecimal's Numbers](http://codeforces.com/problemset/problem/9/C)|Codeforces|Codeforces Beta Round #9 (Div. 2 Only)|2|\n|<ul><li>- [ ] Done</li></ul>|42|[The World is a Theatre](http://codeforces.com/problemset/problem/131/C)|Codeforces|Codeforces Beta Round #95 (Div. 2)|2|\n|<ul><li>- [ ] Done</li></ul>|43|[Lucky Conversion](http://codeforces.com/problemset/problem/145/A)|Codeforces|Codeforces Round #104 (Div. 1) & Codeforces Round #104 (Div. 2)|2|\n|<ul><li>- [ ] Done</li></ul>|44|[Pocket Book](http://codeforces.com/problemset/problem/152/C)|Codeforces|Codeforces Round #108 (Div. 2)|2|\n|<ul><li>- [ ] Done</li></ul>|45|[Another Problem on Strings](http://codeforces.com/problemset/problem/165/C)|Codeforces|Codeforces Round #112 (Div. 2)|2|\n|<ul><li>- [ ] Done</li></ul>|46|[Little Elephant and Problem](http://codeforces.com/problemset/problem/220/A)|Codeforces|Codeforces Round #136 (Div. 1) & Codeforces Round #136 (Div. 2)|2|\n|<ul><li>- [ ] Done</li></ul>|47|[LCM Challenge](http://codeforces.com/problemset/problem/235/A)|Codeforces|Codeforces Round #146 (Div. 1) & Codeforces Round #146 (Div. 2)|2|\n|<ul><li>- [ ] Done</li></ul>|48|[Points on Line](http://codeforces.com/problemset/problem/251/A)|Codeforces|Codeforces Round #153 (Div. 1) & Codeforces Round #153 (Div. 2)|2|\n|<ul><li>- [ ] Done</li></ul>|49|[Escape from Stones](http://codeforces.com/problemset/problem/264/A)|Codeforces|Codeforces Round #162 (Div. 1) & Codeforces Round #162 (Div. 2)|2|\n|<ul><li>- [ ] Done</li></ul>|50|[Beautiful Sets of Points](http://codeforces.com/problemset/problem/268/C)|Codeforces|Codeforces Round #164 (Div. 2)|2|\n|<ul><li>- [ ] Done</li></ul>|51|[k-Multiple Free Set](http://codeforces.com/problemset/problem/274/A)|Codeforces|Codeforces Round #168 (Div. 1) & Codeforces Round #168 (Div. 2)|2|\n|<ul><li>- [ ] Done</li></ul>|52|[Polo the Penguin and Strings](http://codeforces.com/problemset/problem/288/A)|Codeforces|Codeforces Round #177 (Div. 1) & Codeforces Round #177 (Div. 2)|2|\n|<ul><li>- [ ] Done</li></ul>|53|[Greg and Array](http://codeforces.com/problemset/problem/295/A)|Codeforces|Codeforces Round #179 (Div. 1) & Codeforces Round #179 (Div. 2)|2|\n|<ul><li>- [ ] Done</li></ul>|54|[Rational Resistance](http://codeforces.com/problemset/problem/343/A)|Codeforces|Codeforces Round #200 (Div. 1) & Codeforces Round #200 (Div. 2)|2|\n|<ul><li>- [ ] Done</li></ul>|55|[Alice and Bob](http://codeforces.com/problemset/problem/346/A)|Codeforces|Codeforces Round #201 (Div. 1) & Codeforces Round #201 (Div. 2)|2|\n|<ul><li>- [ ] Done</li></ul>|56|[Mafia](http://codeforces.com/problemset/problem/348/A)|Codeforces|Codeforces Round #202 (Div. 1) & Codeforces Round #202 (Div. 2)|2|\n|<ul><li>- [ ] Done</li></ul>|57|[Knight Tournament](http://codeforces.com/problemset/problem/356/A)|Codeforces|Codeforces Round #207 (Div. 1) & Codeforces Round #207 (Div. 2)|2|\n|<ul><li>- [ ] Done</li></ul>|58|[Fixing Typos](http://codeforces.com/problemset/problem/363/C)|Codeforces|Codeforces Round #211 (Div. 2)|2|\n|<ul><li>- [ ] Done</li></ul>|59|[Hamburgers](http://codeforces.com/problemset/problem/371/C)|Codeforces|Codeforces Round #218 (Div. 2)|2|\n|<ul><li>- [ ] Done</li></ul>|60|[Counting Kangaroos is Fun](http://codeforces.com/problemset/problem/372/A)|Codeforces|Codeforces Round #219 (Div. 1) & Codeforces Round #219 (Div. 2)|2|\n|<ul><li>- [ ] Done</li></ul>|61|[Fox and Box Accumulation](http://codeforces.com/problemset/problem/388/A)|Codeforces|Codeforces Round #228 (Div. 1) & Codeforces Round #228 (Div. 2)|2|\n|<ul><li>- [ ] Done</li></ul>|62|[Mashmokh and Numbers](http://codeforces.com/problemset/problem/414/A)|Codeforces|Codeforces Round #240 (Div. 1) & Codeforces Round #240 (Div. 2)|2|\n|<ul><li>- [ ] Done</li></ul>|63|[Checkposts](http://codeforces.com/problemset/problem/427/C)|Codeforces|Codeforces Round #244 (Div. 2)|2|\n|<ul><li>- [ ] Done</li></ul>|64|[Xor-tree](http://codeforces.com/problemset/problem/429/A)|Codeforces|Codeforces Round #245 (Div. 1) & Codeforces Round #245 (Div. 2)|2|\n|<ul><li>- [ ] Done</li></ul>|65|[The Child and Toy](http://codeforces.com/problemset/problem/437/C)|Codeforces|Codeforces Round #250 (Div. 2) & Codeforces Round #250 (Div. 1)|2|\n|<ul><li>- [ ] Done</li></ul>|66|[Valera and Tubes ](http://codeforces.com/problemset/problem/441/C)|Codeforces|Codeforces Round #252 (Div. 2)|2|\n|<ul><li>- [ ] Done</li></ul>|67|[DZY Loves Sequences](http://codeforces.com/problemset/problem/446/A)|Codeforces|Codeforces Round #255 (Div. 1) & Codeforces Round #255 (Div. 2)|2|\n|<ul><li>- [ ] Done</li></ul>|68|[Little Pony and Expected Maximum](http://codeforces.com/problemset/problem/453/A)|Codeforces|Codeforces Round #259 (Div. 1) & Codeforces Round #259 (Div. 2)|2|\n|<ul><li>- [ ] Done</li></ul>|69|[George and Job](http://codeforces.com/problemset/problem/467/C)|Codeforces|Codeforces Round #267 (Div. 2)|2|\n|<ul><li>- [ ] Done</li></ul>|70|[24 Game](http://codeforces.com/problemset/problem/468/A)|Codeforces|Codeforces Round #268 (Div. 1) & Codeforces Round #268 (Div. 2)|2|\n|<ul><li>- [ ] Done</li></ul>|71|[Design Tutorial: Make It Nondeterministic](http://codeforces.com/problemset/problem/472/C)|Codeforces|Codeforces Round #270|2|\n|<ul><li>- [ ] Done</li></ul>|72|[Bits](http://codeforces.com/problemset/problem/484/A)|Codeforces|Codeforces Round #276 (Div. 1) & Codeforces Round #276 (Div. 2)|2|\n|<ul><li>- [ ] Done</li></ul>|73|[Palindrome Transformation](http://codeforces.com/problemset/problem/486/C)|Codeforces|Codeforces Round #277 (Div. 2)|2|\n|<ul><li>- [ ] Done</li></ul>|74|[Hacking Cypher](http://codeforces.com/problemset/problem/490/C)|Codeforces|Codeforces Round #279 (Div. 2)|2|\n|<ul><li>- [ ] Done</li></ul>|75|[Vanya and Exams](http://codeforces.com/problemset/problem/492/C)|Codeforces|Codeforces Round #280 (Div. 2)|2|\n|<ul><li>- [ ] Done</li></ul>|76|[Removing Columns](http://codeforces.com/problemset/problem/496/C)|Codeforces|Codeforces Round #283 (Div. 2) & Codeforces Round #283 (Div. 1)|2|\n|<ul><li>- [ ] Done</li></ul>|77|[Crazy Town](http://codeforces.com/problemset/problem/498/A)|Codeforces|Codeforces Round #284 (Div. 1) & Codeforces Round #284 (Div. 2)|2|\n|<ul><li>- [ ] Done</li></ul>|78|[Fox And Names](http://codeforces.com/problemset/problem/510/C)|Codeforces|Codeforces Round #290 (Div. 2) & Codeforces Round #290 (Div. 1)|2|\n|<ul><li>- [ ] Done</li></ul>|79|[Anya and Smartphone](http://codeforces.com/problemset/problem/518/C)|Codeforces|Codeforces Round #293 (Div. 2)|2|\n|<ul><li>- [ ] Done</li></ul>|80|[Tourist's Notes](http://codeforces.com/problemset/problem/538/C)|Codeforces|Codeforces Round #300|2|\n|<ul><li>- [ ] Done</li></ul>|81|[Kyoya and Colored Balls](http://codeforces.com/problemset/problem/553/A)|Codeforces|Codeforces Round #309 (Div. 1) & Codeforces Round #309 (Div. 2)|2|\n|<ul><li>- [ ] Done</li></ul>|82|[Case of Matryoshkas](http://codeforces.com/problemset/problem/555/A)|Codeforces|Codeforces Round #310 (Div. 1) & Codeforces Round #310 (Div. 2)|2|\n|<ul><li>- [ ] Done</li></ul>|83|[Geometric Progression](http://codeforces.com/problemset/problem/567/C)|Codeforces|Codeforces Round #Pi (Div. 2)|2|\n|<ul><li>- [ ] Done</li></ul>|84|[Replacement](http://codeforces.com/problemset/problem/570/C)|Codeforces|Codeforces Round #316 (Div. 2)|2|\n|<ul><li>- [ ] Done</li></ul>|85|[Developing Skills](http://codeforces.com/problemset/problem/581/C)|Codeforces|Codeforces Round #322 (Div. 2)|2|\n|<ul><li>- [ ] Done</li></ul>|86|[GCD Table](http://codeforces.com/problemset/problem/582/A)|Codeforces|Codeforces Round #323 (Div. 1) & Codeforces Round #323 (Div. 2)|2|\n|<ul><li>- [ ] Done</li></ul>|87|[Duff and Weight Lifting](http://codeforces.com/problemset/problem/587/A)|Codeforces|Codeforces Round #326 (Div. 1) & Codeforces Round #326 (Div. 2)|2|\n|<ul><li>- [ ] Done</li></ul>|88|[The Two Routes](http://codeforces.com/problemset/problem/601/A)|Codeforces|Codeforces Round #333 (Div. 1) & Codeforces Round #333 (Div. 2)|2|\n|<ul><li>- [ ] Done</li></ul>|89|[Alternative Thinking](http://codeforces.com/problemset/problem/603/A)|Codeforces|Codeforces Round #334 (Div. 1) & Codeforces Round #334 (Div. 2)|2|\n|<ul><li>- [ ] Done</li></ul>|90|[Sorting Railway Cars](http://codeforces.com/problemset/problem/605/A)|Codeforces|Codeforces Round #335 (Div. 1) & Codeforces Round #335 (Div. 2)|2|\n|<ul><li>- [ ] Done</li></ul>|91|[Chain Reaction](http://codeforces.com/problemset/problem/607/A)|Codeforces|Codeforces Round #336 (Div. 1) & Codeforces Round #336 (Div. 2)|2|\n|<ul><li>- [ ] Done</li></ul>|92|[K-special Tables](http://codeforces.com/problemset/problem/625/C)|Codeforces|Codeforces Round #342 (Div. 2)|2|\n|<ul><li>- [ ] Done</li></ul>|93|[Cinema](http://codeforces.com/problemset/problem/670/C)|Codeforces|Codeforces Round #350 (Div. 2)|2|\n|<ul><li>- [ ] Done</li></ul>|94|[Vasya and String](http://codeforces.com/problemset/problem/676/C)|Codeforces|Codeforces Round #354 (Div. 2)|2|\n|<ul><li>- [ ] Done</li></ul>|95|[Bear and Prime 100](http://codeforces.com/problemset/problem/679/A)|Codeforces|Codeforces Round #356 (Div. 1) & Codeforces Round #356 (Div. 2)|2|\n|<ul><li>- [ ] Done</li></ul>|96|[They Are Everywhere](http://codeforces.com/problemset/problem/701/C)|Codeforces|Codeforces Round #364 (Div. 2)|2|\n|<ul><li>- [ ] Done</li></ul>|97|[Thor](http://codeforces.com/problemset/problem/704/A)|Codeforces|Codeforces Round #366 (Div. 1) & Codeforces Round #366 (Div. 2)|2|\n|<ul><li>- [ ] Done</li></ul>|98|[Hard problem](http://codeforces.com/problemset/problem/706/C)|Codeforces|Codeforces Round #367 (Div. 2)|2|\n|<ul><li>- [ ] Done</li></ul>|99|[Pythagorean Triples](http://codeforces.com/problemset/problem/707/C)|Codeforces|Codeforces Round #368 (Div. 2)|2|\n|<ul><li>- [ ] Done</li></ul>|100|[Sonya and Queries](http://codeforces.com/problemset/problem/713/A)|Codeforces|Codeforces Round #371 (Div. 1) & Codeforces Round #371 (Div. 2)|2|\n|<ul><li>- [ ] Done</li></ul>|101|[Plus and Square Root](http://codeforces.com/problemset/problem/715/A)|Codeforces|Codeforces Round #372 (Div. 1) & Codeforces Round #372 (Div. 2)|2|\n|<ul><li>- [ ] Done</li></ul>|102|[Alyona and mex](http://codeforces.com/problemset/problem/739/A)|Codeforces|Codeforces Round #381 (Div. 1) & Codeforces Round #381 (Div. 2)|2|\n|<ul><li>- [ ] Done</li></ul>|103|[Tennis Championship](http://codeforces.com/problemset/problem/735/C)|Codeforces|Codeforces Round #382 (Div. 2) & Codeforces Round #382 (Div. 1)|2|\n|<ul><li>- [ ] Done</li></ul>|104|[Vladik and fractions](http://codeforces.com/problemset/problem/743/C)|Codeforces|Codeforces Round #384 (Div. 2)|2|\n|<ul><li>- [ ] Done</li></ul>|105|[PolandBall and Forest](http://codeforces.com/problemset/problem/755/C)|Codeforces|8VC Venture Cup 2017 - Elimination Round|2|\n|<ul><li>- [ ] Done</li></ul>|106|[Timofey and a tree](http://codeforces.com/problemset/problem/763/A)|Codeforces|Codeforces Round #395 (Div. 1) & Codeforces Round #395 (Div. 2)|2|\n|<ul><li>- [ ] Done</li></ul>|107|[Table Tennis Game 2](http://codeforces.com/problemset/problem/765/C)|Codeforces|Codeforces Round #397 by Kaspersky Lab and Barcelona Bootcamp (Div. 1 + Div. 2 combined)|2|\n|<ul><li>- [ ] Done</li></ul>|108|[Andryusha and Colored Balloons](http://codeforces.com/problemset/problem/780/C)|Codeforces|?????????? 2017 - ????? (?????? ??? ??????-??????????)|2|\n|<ul><li>- [ ] Done</li></ul>|109|[Anton and Fairy Tale](http://codeforces.com/problemset/problem/785/C)|Codeforces|Codeforces Round #404 (Div. 2)|2|\n|<ul><li>- [ ] Done</li></ul>|110|[Bear and Different Names](http://codeforces.com/problemset/problem/771/B)|Codeforces|VK Cup 2017 - Round 1|2|\n|<ul><li>- [ ] Done</li></ul>|111|[Functions again](http://codeforces.com/problemset/problem/788/A)|Codeforces|Codeforces Round #407 (Div. 1) & Codeforces Round #407 (Div. 2)|2|\n|<ul><li>- [ ] Done</li></ul>|112|[Sagheer and Nubian Market](http://codeforces.com/problemset/problem/812/C)|Codeforces|Codeforces Round #417 (Div. 2)|2|\n|<ul><li>- [ ] Done</li></ul>|113|[Leha and Function](http://codeforces.com/problemset/problem/840/A)|Codeforces|Codeforces Round #429 (Div. 1) & Codeforces Round #429 (Div. 2)|2|\n|<ul><li>- [ ] Done</li></ul>|114|[Journey](http://codeforces.com/problemset/problem/839/C)|Codeforces|Codeforces Round #428 (Div. 2)|2|\n|<ul><li>- [ ] Done</li></ul>|115|[Bear and Forgotten Tree 3](http://codeforces.com/problemset/problem/639/B)|Codeforces|VK Cup 2016 - Round 1|2|\n|<ul><li>- [ ] Done</li></ul>|116|[Bus](http://codeforces.com/problemset/problem/864/C)|Codeforces|Codeforces Round #436 (Div. 2)|2|\n|<ul><li>- [ ] Done</li></ul>|117|[Maximum splitting](http://codeforces.com/problemset/problem/870/C)|Codeforces|Technocup 2018 - Elimination Round 2|2|\n|<ul><li>- [ ] Done</li></ul>|118|[Rumor](http://codeforces.com/problemset/problem/893/C)|Codeforces|Educational Codeforces Round 33 (Rated for Div. 2)|2|\n|<ul><li>- [ ] Done</li></ul>|119|[Seat Arrangements](http://codeforces.com/problemset/problem/919/C)|Codeforces|Codeforces Round #460 (Div. 2)|2|\n|<ul><li>- [ ] Done</li></ul>|120|[Tic-tac-toe](http://codeforces.com/problemset/problem/3/C)|Codeforces|Codeforces Beta Round #3|3|\n|<ul><li>- [ ] Done</li></ul>|121|[Longest Regular Bracket Sequence](http://codeforces.com/problemset/problem/5/C)|Codeforces|Codeforces Beta Round #5|3|\n|<ul><li>- [ ] Done</li></ul>|122|[Stripe](http://codeforces.com/problemset/problem/18/C)|Codeforces|Codeforces Beta Round #18 (Div. 2 Only)|3|\n|<ul><li>- [ ] Done</li></ul>|123|[Modified GCD](http://codeforces.com/problemset/problem/75/C)|Codeforces|Codeforces Beta Round #67 (Div. 2)|3|\n|<ul><li>- [ ] Done</li></ul>|124|[Cthulhu](http://codeforces.com/problemset/problem/103/B)|Codeforces|Codeforces Beta Round #80 (Div. 1 Only) & Codeforces Beta Round #80 (Div. 2 Only)|3|\n|<ul><li>- [ ] Done</li></ul>|125|[Petya and Inequiations](http://codeforces.com/problemset/problem/111/A)|Codeforces|Codeforces Beta Round #85 (Div. 1 Only) & Codeforces Beta Round #85 (Div. 2 Only)|3|\n|<ul><li>- [ ] Done</li></ul>|126|[Lucky Sum](http://codeforces.com/problemset/problem/121/A)|Codeforces|Codeforces Beta Round #91 (Div. 1 Only) & Codeforces Beta Round #91 (Div. 2 Only)|3|\n|<ul><li>- [ ] Done</li></ul>|127|[Replacement](http://codeforces.com/problemset/problem/135/A)|Codeforces|Codeforces Beta Round #97 (Div. 1) & Codeforces Beta Round #97 (Div. 2)|3|\n|<ul><li>- [ ] Done</li></ul>|128|[History](http://codeforces.com/problemset/problem/137/C)|Codeforces|Codeforces Beta Round #98 (Div. 2)|3|\n|<ul><li>- [ ] Done</li></ul>|129|[Win or Freeze](http://codeforces.com/problemset/problem/150/A)|Codeforces|Codeforces Round #107 (Div. 1) & Codeforces Round #107 (Div. 2)|3|\n|<ul><li>- [ ] Done</li></ul>|130|[Median](http://codeforces.com/problemset/problem/166/C)|Codeforces|Codeforces Round #113 (Div. 2)|3|\n|<ul><li>- [ ] Done</li></ul>|131|[Plant](http://codeforces.com/problemset/problem/185/A)|Codeforces|Codeforces Round #118 (Div. 1) & Codeforces Round #118 (Div. 2)|3|\n|<ul><li>- [ ] Done</li></ul>|132|[Lexicographically Maximum Subsequence](http://codeforces.com/problemset/problem/196/A)|Codeforces|Codeforces Round #124 (Div. 1) & Codeforces Round #124 (Div. 2)|3|\n|<ul><li>- [ ] Done</li></ul>|133|[Photographer](http://codeforces.com/problemset/problem/203/C)|Codeforces|Codeforces Round #128 (Div. 2)|3|\n|<ul><li>- [ ] Done</li></ul>|134|[Little Elephant and Interval](http://codeforces.com/problemset/problem/204/A)|Codeforces|Codeforces Round #129 (Div. 1) & Codeforces Round #129 (Div. 2)|3|\n|<ul><li>- [ ] Done</li></ul>|135|[Color Stripe](http://codeforces.com/problemset/problem/219/C)|Codeforces|Codeforces Round #135 (Div. 2)|3|\n|<ul><li>- [ ] Done</li></ul>|136|[Barcode](http://codeforces.com/problemset/problem/225/C)|Codeforces|Codeforces Round #139 (Div. 2)|3|\n|<ul><li>- [ ] Done</li></ul>|137|[To Add or Not to Add](http://codeforces.com/problemset/problem/231/C)|Codeforces|Codeforces Round #143 (Div. 2)|3|\n|<ul><li>- [ ] Done</li></ul>|138|[Primes on Interval](http://codeforces.com/problemset/problem/237/C)|Codeforces|Codeforces Round #147 (Div. 2)|3|\n|<ul><li>- [ ] Done</li></ul>|139|[Maxim and Discounts](http://codeforces.com/problemset/problem/261/A)|Codeforces|Codeforces Round #160 (Div. 1) & Codeforces Round #160 (Div. 2)|3|\n|<ul><li>- [ ] Done</li></ul>|140|[Dima and Staircase](http://codeforces.com/problemset/problem/272/C)|Codeforces|Codeforces Round #167 (Div. 2) & Codeforces Round #167 (Div. 1)|3|\n|<ul><li>- [ ] Done</li></ul>|141|[Ladder](http://codeforces.com/problemset/problem/279/C)|Codeforces|Codeforces Round #171 (Div. 2)|3|\n|<ul><li>- [ ] Done</li></ul>|142|[XOR and OR](http://codeforces.com/problemset/problem/282/C)|Codeforces|Codeforces Round #173 (Div. 2)|3|\n|<ul><li>- [ ] Done</li></ul>|143|[Cows and Sequence](http://codeforces.com/problemset/problem/283/A)|Codeforces|Codeforces Round #174 (Div. 1) & Codeforces Round #174 (Div. 2)|3|\n|<ul><li>- [ ] Done</li></ul>|144|[Lucky Permutation Triple](http://codeforces.com/problemset/problem/303/A)|Codeforces|Codeforces Round #183 (Div. 1) & Codeforces Round #183 (Div. 2)|3|\n|<ul><li>- [ ] Done</li></ul>|145|[Ilya and Matrix](http://codeforces.com/problemset/problem/313/C)|Codeforces|Codeforces Round #186 (Div. 2)|3|\n|<ul><li>- [ ] Done</li></ul>|146|[Perfect Pair](http://codeforces.com/problemset/problem/317/A)|Codeforces|Codeforces Round #188 (Div. 1) & Codeforces Round #188 (Div. 2)|3|\n|<ul><li>- [ ] Done</li></ul>|147|[Purification](http://codeforces.com/problemset/problem/329/A)|Codeforces|Codeforces Round #192 (Div. 1) & Codeforces Round #192 (Div. 2)|3|\n|<ul><li>- [ ] Done</li></ul>|148|[Secrets](http://codeforces.com/problemset/problem/333/A)|Codeforces|Codeforces Round #194 (Div. 1) & Codeforces Round #194 (Div. 2)|3|\n|<ul><li>- [ ] Done</li></ul>|149|[Quiz](http://codeforces.com/problemset/problem/337/C)|Codeforces|Codeforces Round #196 (Div. 2) & Codeforces Round #196 (Div. 1)|3|\n|<ul><li>- [ ] Done</li></ul>|150|[Xenia and Weights](http://codeforces.com/problemset/problem/339/C)|Codeforces|Codeforces Round #197 (Div. 2)|3|\n|<ul><li>- [ ] Done</li></ul>|151|[Bombs](http://codeforces.com/problemset/problem/350/C)|Codeforces|Codeforces Round #203 (Div. 2)|3|\n|<ul><li>- [ ] Done</li></ul>|152|[Vasya and Robot](http://codeforces.com/problemset/problem/354/A)|Codeforces|Codeforces Round #206 (Div. 1) & Codeforces Round #206 (Div. 2)|3|\n|<ul><li>- [ ] Done</li></ul>|153|[Sereja and Algorithm ](http://codeforces.com/problemset/problem/367/A)|Codeforces|Codeforces Round #215 (Div. 1)|3|\n|<ul><li>- [ ] Done</li></ul>|154|[Valera and Elections](http://codeforces.com/problemset/problem/369/C)|Codeforces|Codeforces Round #216 (Div. 2)|3|\n|<ul><li>- [ ] Done</li></ul>|155|[Arithmetic Progression](http://codeforces.com/problemset/problem/382/C)|Codeforces|Codeforces Round #224 (Div. 2)|3|\n|<ul><li>- [ ] Done</li></ul>|156|[Milking cows](http://codeforces.com/problemset/problem/383/A)|Codeforces|Codeforces Round #225 (Div. 1) & Codeforces Round #225 (Div. 2)|3|\n|<ul><li>- [ ] Done</li></ul>|157|[Bear and Prime Numbers](http://codeforces.com/problemset/problem/385/C)|Codeforces|Codeforces Round #226 (Div. 2)|3|\n|<ul><li>- [ ] Done</li></ul>|158|[Searching for Graph](http://codeforces.com/problemset/problem/402/C)|Codeforces|Codeforces Round #236 (Div. 2) & Codeforces Round #236 (Div. 1)|3|\n|<ul><li>- [ ] Done</li></ul>|159|[Unusual Product](http://codeforces.com/problemset/problem/405/C)|Codeforces|Codeforces Round #238 (Div. 2) & Codeforces Round #238 (Div. 1)|3|\n|<ul><li>- [ ] Done</li></ul>|160|[Triangle](http://codeforces.com/problemset/problem/407/A)|Codeforces|Codeforces Round #239 (Div. 1) & Codeforces Round #239 (Div. 2)|3|\n|<ul><li>- [ ] Done</li></ul>|161|[Booking System](http://codeforces.com/problemset/problem/416/C)|Codeforces|Codeforces Round #241 (Div. 2)|3|\n|<ul><li>- [ ] Done</li></ul>|162|[Painting Fence](http://codeforces.com/problemset/problem/448/C)|Codeforces|Codeforces Round #256 (Div. 2)|3|\n|<ul><li>- [ ] Done</li></ul>|163|[Jzzhu and Chocolate](http://codeforces.com/problemset/problem/449/A)|Codeforces|Codeforces Round #257 (Div. 1) & Codeforces Round #257 (Div. 2)|3|\n|<ul><li>- [ ] Done</li></ul>|164|[Pashmak and Buses](http://codeforces.com/problemset/problem/459/C)|Codeforces|Codeforces Round #261 (Div. 2)|3|\n|<ul><li>- [ ] Done</li></ul>|165|[Present](http://codeforces.com/problemset/problem/460/C)|Codeforces|Codeforces Round #262 (Div. 2)|3|\n|<ul><li>- [ ] Done</li></ul>|166|[Gargari and Bishops](http://codeforces.com/problemset/problem/463/C)|Codeforces|Codeforces Round #264 (Div. 2)|3|\n|<ul><li>- [ ] Done</li></ul>|167|[No to Palindromes!](http://codeforces.com/problemset/problem/464/A)|Codeforces|Codeforces Round #265 (Div. 1) & Codeforces Round #265 (Div. 2)|3|\n|<ul><li>- [ ] Done</li></ul>|168|[Dreamoon and Sums](http://codeforces.com/problemset/problem/476/C)|Codeforces|Codeforces Round #272 (Div. 2) & Codeforces Round #272 (Div. 1)|3|\n|<ul><li>- [ ] Done</li></ul>|169|[Vasya and Basketball](http://codeforces.com/problemset/problem/493/C)|Codeforces|Codeforces Round #281 (Div. 2)|3|\n|<ul><li>- [ ] Done</li></ul>|170|[Treasure](http://codeforces.com/problemset/problem/494/A)|Codeforces|Codeforces Round #282 (Div. 1) & Codeforces Round #282 (Div. 2)|3|\n|<ul><li>- [ ] Done</li></ul>|171|[Misha and Forest](http://codeforces.com/problemset/problem/501/C)|Codeforces|Codeforces Round #285 (Div. 2) & Codeforces Round #285 (Div. 1)|3|\n|<ul><li>- [ ] Done</li></ul>|172|[Mr. Kitayuta, the Treasure Hunter](http://codeforces.com/problemset/problem/505/C)|Codeforces|Codeforces Round #286 (Div. 2) & Codeforces Round #286 (Div. 1)|3|\n|<ul><li>- [ ] Done</li></ul>|173|[Guess Your Way Out!](http://codeforces.com/problemset/problem/507/C)|Codeforces|Codeforces Round #287 (Div. 2)|3|\n|<ul><li>- [ ] Done</li></ul>|174|[Anya and Ghosts](http://codeforces.com/problemset/problem/508/C)|Codeforces|Codeforces Round #288 (Div. 2)|3|\n|<ul><li>- [ ] Done</li></ul>|175|[Watto and Mechanism](http://codeforces.com/problemset/problem/514/C)|Codeforces|Codeforces Round #291 (Div. 2)|3|\n|<ul><li>- [ ] Done</li></ul>|176|[DNA Alignment](http://codeforces.com/problemset/problem/520/C)|Codeforces|Codeforces Round #295 (Div. 2) & Codeforces Round #295 (Div. 1)|3|\n|<ul><li>- [ ] Done</li></ul>|177|[Glass Carving](http://codeforces.com/problemset/problem/527/C)|Codeforces|Codeforces Round #296 (Div. 2) & Codeforces Round #296 (Div. 1)|3|\n|<ul><li>- [ ] Done</li></ul>|178|[Ilya and Sticks](http://codeforces.com/problemset/problem/525/C)|Codeforces|Codeforces Round #297 (Div. 2)|3|\n|<ul><li>- [ ] Done</li></ul>|179|[Polycarpus' Dice](http://codeforces.com/problemset/problem/534/C)|Codeforces|Codeforces Round #298 (Div. 2)|3|\n|<ul><li>- [ ] Done</li></ul>|180|[Ice Cave](http://codeforces.com/problemset/problem/540/C)|Codeforces|Codeforces Round #301 (Div. 2)|3|\n|<ul><li>- [ ] Done</li></ul>|181|[Writing Code](http://codeforces.com/problemset/problem/543/A)|Codeforces|Codeforces Round #302 (Div. 1) & Codeforces Round #302 (Div. 2)|3|\n|<ul><li>- [ ] Done</li></ul>|182|[Vanya and Scales](http://codeforces.com/problemset/problem/552/C)|Codeforces|Codeforces Round #308 (Div. 2)|3|\n|<ul><li>- [ ] Done</li></ul>|183|[Primes or Palindromes?](http://codeforces.com/problemset/problem/568/A)|Codeforces|Codeforces Round #315 (Div. 1) & Codeforces Round #315 (Div. 2)|3|\n|<ul><li>- [ ] Done</li></ul>|184|[A Problem about Polyline](http://codeforces.com/problemset/problem/578/A)|Codeforces|Codeforces Round #320 (Div. 1) [Bayan Thanks-Round] & Codeforces Round #320 (Div. 2) [Bayan Thanks-Round]|3|\n|<ul><li>- [ ] Done</li></ul>|185|[Marina and Vasya](http://codeforces.com/problemset/problem/584/C)|Codeforces|Codeforces Round #324 (Div. 2)|3|\n|<ul><li>- [ ] Done</li></ul>|186|[Gennady the Dentist](http://codeforces.com/problemset/problem/585/A)|Codeforces|Codeforces Round #325 (Div. 1) & Codeforces Round #325 (Div. 2)|3|\n|<ul><li>- [ ] Done</li></ul>|187|[Median Smoothing](http://codeforces.com/problemset/problem/590/A)|Codeforces|Codeforces Round #327 (Div. 1) & Codeforces Round #327 (Div. 2)|3|\n|<ul><li>- [ ] Done</li></ul>|188|[Day at the Beach](http://codeforces.com/problemset/problem/599/C)|Codeforces|Codeforces Round #332 (Div. 2)|3|\n|<ul><li>- [ ] Done</li></ul>|189|[Watering Flowers](http://codeforces.com/problemset/problem/617/C)|Codeforces|Codeforces Round #340 (Div. 2)|3|\n|<ul><li>- [ ] Done</li></ul>|190|[Wet Shark and Flowers](http://codeforces.com/problemset/problem/621/C)|Codeforces|Codeforces Round #341 (Div. 2)|3|\n|<ul><li>- [ ] Done</li></ul>|191|[Little Artem and Matrix](http://codeforces.com/problemset/problem/641/B)|Codeforces|VK Cup 2016 - Round 2|3|\n|<ul><li>- [ ] Done</li></ul>|192|[Bear and Colors](http://codeforces.com/problemset/problem/643/A)|Codeforces|VK Cup 2016 - Round 3|3|\n|<ul><li>- [ ] Done</li></ul>|193|[Recycling Bottles](http://codeforces.com/problemset/problem/671/A)|Codeforces|Codeforces Round #352 (Div. 1) & Codeforces Round #352 (Div. 2)|3|\n|<ul><li>- [ ] Done</li></ul>|194|[Vanya and Label](http://codeforces.com/problemset/problem/677/C)|Codeforces|Codeforces Round #355 (Div. 2)|3|\n|<ul><li>- [ ] Done</li></ul>|195|[Heap Operations](http://codeforces.com/problemset/problem/681/C)|Codeforces|Codeforces Round #357 (Div. 2)|3|\n|<ul><li>- [ ] Done</li></ul>|196|[Alyona and the Tree](http://codeforces.com/problemset/problem/682/C)|Codeforces|Codeforces Round #358 (Div. 2)|3|\n|<ul><li>- [ ] Done</li></ul>|197|[Robbers' watch](http://codeforces.com/problemset/problem/685/A)|Codeforces|Codeforces Round #359 (Div. 1) & Codeforces Round #359 (Div. 2)|3|\n|<ul><li>- [ ] Done</li></ul>|198|[Lorenzo Von Matterhorn](http://codeforces.com/problemset/problem/696/A)|Codeforces|Codeforces Round #362 (Div. 1) & Codeforces Round #362 (Div. 2)|3|\n|<ul><li>- [ ] Done</li></ul>|199|[Coloring Trees](http://codeforces.com/problemset/problem/711/C)|Codeforces|Codeforces Round #369 (Div. 2)|3|\n|<ul><li>- [ ] Done</li></ul>|200|[Joty and Chocolate](http://codeforces.com/problemset/problem/678/C)|Codeforces|Educational Codeforces Round 13|3|\n|<ul><li>- [ ] Done</li></ul>|201|[Memory and De-Evolution](http://codeforces.com/problemset/problem/712/C)|Codeforces|Codeforces Round #370 (Div. 2)|3|\n|<ul><li>- [ ] Done</li></ul>|202|[Efim and Strange Grade](http://codeforces.com/problemset/problem/718/A)|Codeforces|Codeforces Round #373 (Div. 1) & Codeforces Round #373 (Div. 2)|3|\n|<ul><li>- [ ] Done</li></ul>|203|[Journey](http://codeforces.com/problemset/problem/721/C)|Codeforces|Codeforces Round #374 (Div. 2)|3|\n|<ul><li>- [ ] Done</li></ul>|204|[Polycarp at the Radio](http://codeforces.com/problemset/problem/723/C)|Codeforces|Codeforces Round #375 (Div. 2)|3|\n|<ul><li>- [ ] Done</li></ul>|205|[Socks](http://codeforces.com/problemset/problem/731/C)|Codeforces|Codeforces Round #376 (Div. 2)|3|\n|<ul><li>- [ ] Done</li></ul>|206|[Anton and Making Potions](http://codeforces.com/problemset/problem/734/C)|Codeforces|Codeforces Round #379 (Div. 2)|3|\n|<ul><li>- [ ] Done</li></ul>|207|[Arpa's loud Owf and Mehrdad's evil plan](http://codeforces.com/problemset/problem/741/A)|Codeforces|Codeforces Round #383 (Div. 1) & Codeforces Round #383 (Div. 2)|3|\n|<ul><li>- [ ] Done</li></ul>|208|[Voting](http://codeforces.com/problemset/problem/749/C)|Codeforces|Codeforces Round #388 (Div. 2)|3|\n|<ul><li>- [ ] Done</li></ul>|209|[Servers](http://codeforces.com/problemset/problem/747/C)|Codeforces|Codeforces Round #387 (Div. 2)|3|\n|<ul><li>- [ ] Done</li></ul>|210|[Hongcow Builds A Nation](http://codeforces.com/problemset/problem/744/A)|Codeforces|Codeforces Round #385 (Div. 1) & Codeforces Round #385 (Div. 2)|3|\n|<ul><li>- [ ] Done</li></ul>|211|[Santa Claus and Robot](http://codeforces.com/problemset/problem/748/C)|Codeforces|Technocup 2017 - Elimination Round 3|3|\n|<ul><li>- [ ] Done</li></ul>|212|[Dasha and Password](http://codeforces.com/problemset/problem/761/C)|Codeforces|Codeforces Round #394 (Div. 2)|3|\n|<ul><li>- [ ] Done</li></ul>|213|[Mahmoud and a Message](http://codeforces.com/problemset/problem/766/C)|Codeforces|Codeforces Round #396 (Div. 2)|3|\n|<ul><li>- [ ] Done</li></ul>|214|[Molly's Chemicals](http://codeforces.com/problemset/problem/776/C)|Codeforces|ICM Technex 2017 and Codeforces Round #400 (Div. 1 + Div. 2, combined)|3|\n|<ul><li>- [ ] Done</li></ul>|215|[Alyona and Spreadsheet](http://codeforces.com/problemset/problem/777/C)|Codeforces|Codeforces Round #401 (Div. 2)|3|\n|<ul><li>- [ ] Done</li></ul>|216|[Do you want a date?](http://codeforces.com/problemset/problem/809/A)|Codeforces|Codeforces Round #415 (Div. 1) & Codeforces Round #415 (Div. 2)|3|\n|<ul><li>- [ ] Done</li></ul>|217|[Success Rate](http://codeforces.com/problemset/problem/773/A)|Codeforces|VK Cup 2017 - Round 3|3|\n|<ul><li>- [ ] Done</li></ul>|218|[Mike and gcd problem](http://codeforces.com/problemset/problem/798/C)|Codeforces|Codeforces Round #410 (Div. 2)|3|\n|<ul><li>- [ ] Done</li></ul>|219|[Voltage Keepsake](http://codeforces.com/problemset/problem/772/A)|Codeforces|VK Cup 2017 - Round 2|3|\n|<ul><li>- [ ] Done</li></ul>|220|[Karen and Game](http://codeforces.com/problemset/problem/815/A)|Codeforces|Codeforces Round #419 (Div. 1) & Codeforces Round #419 (Div. 2)|3|\n|<ul><li>- [ ] Done</li></ul>|221|[Star sky](http://codeforces.com/problemset/problem/835/C)|Codeforces|Codeforces Round #427 (Div. 2)|3|\n|<ul><li>- [ ] Done</li></ul>|222|[The Meaningless Game](http://codeforces.com/problemset/problem/833/A)|Codeforces|Codeforces Round #426 (Div. 1) & Codeforces Round #426 (Div. 2)|3|\n|<ul><li>- [ ] Done</li></ul>|223|[Hacker, pack your bags!](http://codeforces.com/problemset/problem/822/C)|Codeforces|Codeforces Round #422 (Div. 2)|3|\n|<ul><li>- [ ] Done</li></ul>|224|[Okabe and Boxes](http://codeforces.com/problemset/problem/821/C)|Codeforces|Codeforces Round #420 (Div. 2)|3|\n|<ul><li>- [ ] Done</li></ul>|225|[An impassioned circulation of affection](http://codeforces.com/problemset/problem/814/C)|Codeforces|Codeforces Round #418 (Div. 2)|3|\n|<ul><li>- [ ] Done</li></ul>|226|[Sorting by Subsequences](http://codeforces.com/problemset/problem/843/A)|Codeforces|AIM Tech Round 4 (Div. 1) & AIM Tech Round 4 (Div. 2)|3|\n|<ul><li>- [ ] Done</li></ul>|227|[Two TVs](http://codeforces.com/problemset/problem/845/C)|Codeforces|Educational Codeforces Round 27|3|\n|<ul><li>- [ ] Done</li></ul>|228|[Phone Numbers](http://codeforces.com/problemset/problem/898/C)|Codeforces|Codeforces Round #451 (Div. 2)|3|\n|<ul><li>- [ ] Done</li></ul>|229|[Hashing Trees](http://codeforces.com/problemset/problem/901/A)|Codeforces|Codeforces Round #453 (Div. 1) & Codeforces Round #453 (Div. 2)|3|\n|<ul><li>- [ ] Done</li></ul>|230|[Party Lemonade](http://codeforces.com/problemset/problem/913/C)|Codeforces|Hello 2018|3|\n|<ul><li>- [ ] Done</li></ul>|231|[Jamie and Interesting Graph](http://codeforces.com/problemset/problem/916/C)|Codeforces|Codeforces Round #457 (Div. 2)|3|\n|<ul><li>- [ ] Done</li></ul>|232|[Swap Adjacent Elements](http://codeforces.com/problemset/problem/920/C)|Codeforces|Educational Codeforces Round 37 (Rated for Div. 2)|3|\n|<ul><li>- [ ] Done</li></ul>|233|[Cave Painting](http://codeforces.com/problemset/problem/922/C)|Codeforces|Codeforces Round #461 (Div. 2)|3|\n|<ul><li>- [ ] Done</li></ul>|234|[Convenient For Everybody](http://codeforces.com/problemset/problem/939/C)|Codeforces|Codeforces Round #464 (Div. 2)|3|\n|<ul><li>- [ ] Done</li></ul>|235|[Fifa and Fafa](http://codeforces.com/problemset/problem/935/C)|Codeforces|Codeforces Round #465 (Div. 2)|3|\n|<ul><li>- [ ] Done</li></ul>|236|[K-Multiple Free set ](https://uva.onlinejudge.org/index.php?option=onlinejudge&page=show_problem&problem=2203)|UVA||3|\n|<ul><li>- [ ] Done</li></ul>|237|[Ancient Berland Circus](http://codeforces.com/problemset/problem/1/C)|Codeforces|Codeforces Beta Round #1|4|\n|<ul><li>- [ ] Done</li></ul>|238|[Fruits](http://codeforces.com/problemset/problem/12/C)|Codeforces|Codeforces Beta Round #12 (Div 2 Only)|4|\n|<ul><li>- [ ] Done</li></ul>|239|[Roads in Berland](http://codeforces.com/problemset/problem/25/C)|Codeforces|Codeforces Beta Round #25 (Div. 2 Only)|4|\n|<ul><li>- [ ] Done</li></ul>|240|[Page Numbers](http://codeforces.com/problemset/problem/34/C)|Codeforces|Codeforces Beta Round #34 (Div. 2)|4|\n|<ul><li>- [ ] Done</li></ul>|241|[Fire Again](http://codeforces.com/problemset/problem/35/C)|Codeforces|Codeforces Beta Round #35 (Div. 2)|4|\n|<ul><li>- [ ] Done</li></ul>|242|[Lucky Tickets](http://codeforces.com/problemset/problem/43/C)|Codeforces|Codeforces Beta Round #42 (Div. 2)|4|\n|<ul><li>- [ ] Done</li></ul>|243|[Little Frog](http://codeforces.com/problemset/problem/53/C)|Codeforces|Codeforces Beta Round #49 (Div. 2)|4|\n|<ul><li>- [ ] Done</li></ul>|244|[Round Table Knights](http://codeforces.com/problemset/problem/71/C)|Codeforces|Codeforces Beta Round #65 (Div. 2)|4|\n|<ul><li>- [ ] Done</li></ul>|245|[Trains](http://codeforces.com/problemset/problem/87/A)|Codeforces|Codeforces Beta Round #73 (Div. 1 Only) & Codeforces Beta Round #73 (Div. 2 Only)|4|\n|<ul><li>- [ ] Done</li></ul>|246|[Homework](http://codeforces.com/problemset/problem/101/A)|Codeforces|Codeforces Beta Round #79 (Div. 1 Only) & Codeforces Beta Round #79 (Div. 2 Only)|4|\n|<ul><li>- [ ] Done</li></ul>|247|[Buns](http://codeforces.com/problemset/problem/106/C)|Codeforces|Codeforces Beta Round #82 (Div. 2)|4|\n|<ul><li>- [ ] Done</li></ul>|248|[Dorm Water Supply](http://codeforces.com/problemset/problem/107/A)|Codeforces|Codeforces Beta Round #83 (Div. 1 Only) & Codeforces Beta Round #83 (Div. 2 Only)|4|\n|<ul><li>- [ ] Done</li></ul>|249|[Statues](http://codeforces.com/problemset/problem/128/A)|Codeforces|Codeforces Beta Round #94 (Div. 1 Only) & Codeforces Beta Round #94 (Div. 2 Only)|4|\n|<ul><li>- [ ] Done</li></ul>|250|[Turing Tape](http://codeforces.com/problemset/problem/132/A)|Codeforces|Codeforces Beta Round #96 (Div. 1) & Codeforces Beta Round #96 (Div. 2)|4|\n|<ul><li>- [ ] Done</li></ul>|251|[New Year Snowmen](http://codeforces.com/problemset/problem/140/C)|Codeforces|Codeforces Round #100|4|\n|<ul><li>- [ ] Done</li></ul>|252|[Anagram Search](http://codeforces.com/problemset/problem/144/C)|Codeforces|Codeforces Round #103 (Div. 2)|4|\n|<ul><li>- [ ] Done</li></ul>|253|[Division into Teams](http://codeforces.com/problemset/problem/149/C)|Codeforces|Codeforces Round #106 (Div. 2)|4|\n|<ul><li>- [ ] Done</li></ul>|254|[Hometask](http://codeforces.com/problemset/problem/154/A)|Codeforces|Codeforces Round #109 (Div. 1) & Codeforces Round #109 (Div. 2)|4|\n|<ul><li>- [ ] Done</li></ul>|255|[Message](http://codeforces.com/problemset/problem/156/A)|Codeforces|Codeforces Round #110 (Div. 1) & Codeforces Round #110 (Div. 2)|4|\n|<ul><li>- [ ] Done</li></ul>|256|[Find Pair](http://codeforces.com/problemset/problem/160/C)|Codeforces|Codeforces Round #111 (Div. 2)|4|\n|<ul><li>- [ ] Done</li></ul>|257|[Letter](http://codeforces.com/problemset/problem/180/C)|Codeforces|Codeforces Round #116 (Div. 2, ACM-ICPC Rules)|4|\n|<ul><li>- [ ] Done</li></ul>|258|[About Bacteria](http://codeforces.com/problemset/problem/198/A)|Codeforces|Codeforces Round #125 (Div. 1) & Codeforces Round #125 (Div. 2)|4|\n|<ul><li>- [ ] Done</li></ul>|259|[Flying Saucer Segments](http://codeforces.com/problemset/problem/226/A)|Codeforces|Codeforces Round #140 (Div. 1) & Codeforces Round #140 (Div. 2)|4|\n|<ul><li>- [ ] Done</li></ul>|260|[Shifts](http://codeforces.com/problemset/problem/229/A)|Codeforces|Codeforces Round #142 (Div. 1) & Codeforces Round #142 (Div. 2)|4|\n|<ul><li>- [ ] Done</li></ul>|261|[Weather](http://codeforces.com/problemset/problem/234/C)|Codeforces|Codeforces Round #145 (Div. 2, ACM-ICPC Rules)|4|\n|<ul><li>- [ ] Done</li></ul>|262|[King's Path](http://codeforces.com/problemset/problem/242/C)|Codeforces|Codeforces Round #149 (Div. 2)|4|\n|<ul><li>- [ ] Done</li></ul>|263|[Almost Arithmetical Progression](http://codeforces.com/problemset/problem/255/C)|Codeforces|Codeforces Round #156 (Div. 2) & Codeforces Round #156 (Div. 1)|4|\n|<ul><li>- [ ] Done</li></ul>|264|[View Angle](http://codeforces.com/problemset/problem/257/C)|Codeforces|Codeforces Round #159 (Div. 2)|4|\n|<ul><li>- [ ] Done</li></ul>|265|[The Brand New Function](http://codeforces.com/problemset/problem/243/A)|Codeforces|Codeforces Round #150 (Div. 1) & Codeforces Round #150 (Div. 2)|4|\n|<ul><li>- [ ] Done</li></ul>|266|[Magical Boxes](http://codeforces.com/problemset/problem/269/A)|Codeforces|Codeforces Round #165 (Div. 1) & Codeforces Round #165 (Div. 2)|4|\n|<ul><li>- [ ] Done</li></ul>|267|[Secret](http://codeforces.com/problemset/problem/271/C)|Codeforces|Codeforces Round #166 (Div. 2)|4|\n|<ul><li>- [ ] Done</li></ul>|268|[Lucky Permutation](http://codeforces.com/problemset/problem/286/A)|Codeforces|Codeforces Round #176 (Div. 1) & Codeforces Round #176 (Div. 2)|4|\n|<ul><li>- [ ] Done</li></ul>|269|[Parity Game](http://codeforces.com/problemset/problem/297/A)|Codeforces|Codeforces Round #180 (Div. 1) & Codeforces Round #180 (Div. 2)|4|\n|<ul><li>- [ ] Done</li></ul>|270|[Beautiful Numbers](http://codeforces.com/problemset/problem/300/C)|Codeforces|Codeforces Round #181 (Div. 2)|4|\n|<ul><li>- [ ] Done</li></ul>|271|[Yaroslav and Sequence](http://codeforces.com/problemset/problem/301/A)|Codeforces|Codeforces Round #182 (Div. 1) & Codeforces Round #182 (Div. 2)|4|\n|<ul><li>- [ ] Done</li></ul>|272|[The Closest Pair](http://codeforces.com/problemset/problem/311/A)|Codeforces|Codeforces Round #185 (Div. 1) & Codeforces Round #185 (Div. 2)|4|\n|<ul><li>- [ ] Done</li></ul>|273|[Ciel and Robot](http://codeforces.com/problemset/problem/321/A)|Codeforces|Codeforces Round #190 (Div. 1) & Codeforces Round #190 (Div. 2)|4|\n|<ul><li>- [ ] Done</li></ul>|274|[Magic Five](http://codeforces.com/problemset/problem/327/C)|Codeforces|Codeforces Round #191 (Div. 2)|4|\n|<ul><li>- [ ] Done</li></ul>|275|[Tourist Problem](http://codeforces.com/problemset/problem/340/C)|Codeforces|Codeforces Round #198 (Div. 2) & Codeforces Round #198 (Div. 1)|4|\n|<ul><li>- [ ] Done</li></ul>|276|[Jeff and Rounding](http://codeforces.com/problemset/problem/351/A)|Codeforces|Codeforces Round #204 (Div. 1) & Codeforces Round #204 (Div. 2)|4|\n|<ul><li>- [ ] Done</li></ul>|277|[Find Maximum](http://codeforces.com/problemset/problem/353/C)|Codeforces|Codeforces Round #205 (Div. 2)|4|\n|<ul><li>- [ ] Done</li></ul>|278|[Matrix](http://codeforces.com/problemset/problem/364/A)|Codeforces|Codeforces Round #213 (Div. 1) & Codeforces Round #213 (Div. 2)|4|\n|<ul><li>- [ ] Done</li></ul>|279|[Dima and Salad](http://codeforces.com/problemset/problem/366/C)|Codeforces|Codeforces Round #214 (Div. 2)|4|\n|<ul><li>- [ ] Done</li></ul>|280|[Divisible by Seven](http://codeforces.com/problemset/problem/375/A)|Codeforces|Codeforces Round #221 (Div. 1) & Codeforces Round #221 (Div. 2)|4|\n|<ul><li>- [ ] Done</li></ul>|281|[Sereja and Prefixes](http://codeforces.com/problemset/problem/380/A)|Codeforces|Codeforces Round #223 (Div. 1) & Codeforces Round #223 (Div. 2)|4|\n|<ul><li>- [ ] Done</li></ul>|282|[Inna and Huge Candy Matrix](http://codeforces.com/problemset/problem/400/C)|Codeforces|Codeforces Round #234 (Div. 2)|4|\n|<ul><li>- [ ] Done</li></ul>|283|[Restore Graph](http://codeforces.com/problemset/problem/404/C)|Codeforces|Codeforces Round #237 (Div. 2)|4|\n|<ul><li>- [ ] Done</li></ul>|284|[Magic Formulas](http://codeforces.com/problemset/problem/424/C)|Codeforces|Codeforces Round #242 (Div. 2)|4|\n|<ul><li>- [ ] Done</li></ul>|285|[Sereja and Swaps](http://codeforces.com/problemset/problem/425/A)|Codeforces|Codeforces Round #243 (Div. 1) & Codeforces Round #243 (Div. 2)|4|\n|<ul><li>- [ ] Done</li></ul>|286|[Cardiogram](http://codeforces.com/problemset/problem/435/C)|Codeforces|Codeforces Round #249 (Div. 2)|4|\n|<ul><li>- [ ] Done</li></ul>|287|[Devu and Partitioning of the Array](http://codeforces.com/problemset/problem/439/C)|Codeforces|Codeforces Round #251 (Div. 2)|4|\n|<ul><li>- [ ] Done</li></ul>|288|[DZY Loves Physics](http://codeforces.com/problemset/problem/444/A)|Codeforces|Codeforces Round #254 (Div. 1) & Codeforces Round #254 (Div. 2)|4|\n|<ul><li>- [ ] Done</li></ul>|289|[Predict Outcome of the Game](http://codeforces.com/problemset/problem/451/C)|Codeforces|Codeforces Round #258 (Div. 2)|4|\n|<ul><li>- [ ] Done</li></ul>|290|[MUH and House of Cards](http://codeforces.com/problemset/problem/471/C)|Codeforces|Codeforces Round #269 (Div. 2)|4|\n|<ul><li>- [ ] Done</li></ul>|291|[Captain Marmot](http://codeforces.com/problemset/problem/474/C)|Codeforces|Codeforces Round #271 (Div. 2)|4|\n|<ul><li>- [ ] Done</li></ul>|292|[Fight the Monster](http://codeforces.com/problemset/problem/488/C)|Codeforces|Codeforces Round #278 (Div. 2) & Codeforces Round #278 (Div. 1) & Codeforces Round #278 (Div. 2) & Codeforces Round #278 (Div. 1)|4|\n|<ul><li>- [ ] Done</li></ul>|293|[Tavas and Karafs](http://codeforces.com/problemset/problem/535/C)|Codeforces|Codeforces Round #299 (Div. 2) & Codeforces Round #299 (Div. 1)|4|\n|<ul><li>- [ ] Done</li></ul>|294|[GukiZ hates Boxes](http://codeforces.com/problemset/problem/551/C)|Codeforces|Codeforces Round #307 (Div. 2)|4|\n|<ul><li>- [ ] Done</li></ul>|295|[Arthur and Table](http://codeforces.com/problemset/problem/557/C)|Codeforces|Codeforces Round #311 (Div. 2)|4|\n|<ul><li>- [ ] Done</li></ul>|296|[Amr and Chemistry](http://codeforces.com/problemset/problem/558/C)|Codeforces|Codeforces Round #312 (Div. 2)|4|\n|<ul><li>- [ ] Done</li></ul>|297|[The Big Race](http://codeforces.com/problemset/problem/592/C)|Codeforces|Codeforces Round #328 (Div. 2)|4|\n|<ul><li>- [ ] Done</li></ul>|298|[Harmony Analysis](http://codeforces.com/problemset/problem/610/C)|Codeforces|Codeforces Round #337 (Div. 2)|4|\n|<ul><li>- [ ] Done</li></ul>|299|[Peter and Snow Blower](http://codeforces.com/problemset/problem/613/A)|Codeforces|Codeforces Round #339 (Div. 1) & Codeforces Round #339 (Div. 2)|4|\n|<ul><li>- [ ] Done</li></ul>|300|[Report](http://codeforces.com/problemset/problem/631/C)|Codeforces|Codeforces Round #344 (Div. 2)|4|\n|<ul><li>- [ ] Done</li></ul>|301|[Reberland Linguistics](http://codeforces.com/problemset/problem/666/A)|Codeforces|Codeforces Round #349 (Div. 1) & Codeforces Round #349 (Div. 2)|4|\n|<ul><li>- [ ] Done</li></ul>|302|[Money Transfers](http://codeforces.com/problemset/problem/675/C)|Codeforces|Codeforces Round #353 (Div. 2)|4|\n|<ul><li>- [ ] Done</li></ul>|303|[Mike and Chocolate Thieves](http://codeforces.com/problemset/problem/689/C)|Codeforces|Codeforces Round #361 (Div. 2)|4|\n|<ul><li>- [ ] Done</li></ul>|304|[Epidemic in Monstropolis](http://codeforces.com/problemset/problem/733/C)|Codeforces|Codeforces Round #378 (Div. 2)|4|\n|<ul><li>- [ ] Done</li></ul>|305|[Road to Cinema](http://codeforces.com/problemset/problem/729/C)|Codeforces|Technocup 2017 - Elimination Round 2|4|\n|<ul><li>- [ ] Done</li></ul>|306|[Tram](http://codeforces.com/problemset/problem/746/C)|Codeforces|Codeforces Round #386 (Div. 2)|4|\n|<ul><li>- [ ] Done</li></ul>|307|[Unfair Poll](http://codeforces.com/problemset/problem/758/C)|Codeforces|Codeforces Round #392 (Div. 2)|4|\n|<ul><li>- [ ] Done</li></ul>|308|[Pavel and barbecue](http://codeforces.com/problemset/problem/756/A)|Codeforces|8VC Venture Cup 2017 - Final Round|4|\n|<ul><li>- [ ] Done</li></ul>|309|[Garland](http://codeforces.com/problemset/problem/767/C)|Codeforces|Codeforces Round #398 (Div. 2)|4|\n|<ul><li>- [ ] Done</li></ul>|310|[Jon Snow and his Favourite Number](http://codeforces.com/problemset/problem/768/C)|Codeforces|Divide by Zero 2017 and Codeforces Round #399 (Div. 1 + Div. 2, combined)|4|\n|<ul><li>- [ ] Done</li></ul>|311|[Vladik and Memorable Trip](http://codeforces.com/problemset/problem/811/C)|Codeforces|Codeforces Round #416 (Div. 2)|4|\n|<ul><li>- [ ] Done</li></ul>|312|[Naming Company](http://codeforces.com/problemset/problem/794/C)|Codeforces|Tinkoff Challenge - Final Round (Codeforces Round #414, rated, Div. 1 + Div. 2)|4|\n|<ul><li>- [ ] Done</li></ul>|313|[Fountains](http://codeforces.com/problemset/problem/799/C)|Codeforces|Playrix Codescapes Cup (Codeforces Round #413, rated, Div. 1 + Div. 2)|4|\n|<ul><li>- [ ] Done</li></ul>|314|[Jury Marks](http://codeforces.com/problemset/problem/831/C)|Codeforces|Codeforces Round #424 (Div. 2, rated, based on VK Cup Finals)|4|\n|<ul><li>- [ ] Done</li></ul>|315|[String Reconstruction](http://codeforces.com/problemset/problem/827/A)|Codeforces|Codeforces Round #423 (Div. 1, rated, based on VK Cup Finals) & Codeforces Round #423 (Div. 2, rated, based on VK Cup Finals)|4|\n|<ul><li>- [ ] Done</li></ul>|316|[Queue](http://codeforces.com/problemset/problem/91/B)|Codeforces|Codeforces Beta Round #75 (Div. 1 Only) & Codeforces Beta Round #75 (Div. 2 Only)|4|\n|<ul><li>- [ ] Done</li></ul>|317|[The Intriguing Obsession](http://codeforces.com/problemset/problem/869/C)|Codeforces|Codeforces Round #439 (Div. 2)|4|\n|<ul><li>- [ ] Done</li></ul>|318|[Qualification Rounds](http://codeforces.com/problemset/problem/868/C)|Codeforces|Codeforces Round #438 by Sberbank and Barcelona Bootcamp (Div. 1 + Div. 2 combined)|4|\n|<ul><li>- [ ] Done</li></ul>|319|[Travelling Salesman and Special Numbers](http://codeforces.com/problemset/problem/914/C)|Codeforces|Codecraft-18 and Codeforces Round #458 (Div. 1 + Div. 2, combined)|4|\n|<ul><li>- [ ] Done</li></ul>|320|[Line](http://codeforces.com/problemset/problem/7/C)|Codeforces|Codeforces Beta Round #7|5|\n|<ul><li>- [ ] Done</li></ul>|321|[Sequence](http://codeforces.com/problemset/problem/13/C)|Codeforces|Codeforces Beta Round #13|5|\n|<ul><li>- [ ] Done</li></ul>|322|[Four Segments](http://codeforces.com/problemset/problem/14/C)|Codeforces|Codeforces Beta Round #14 (Div. 2)|5|\n|<ul><li>- [ ] Done</li></ul>|323|[Monitor](http://codeforces.com/problemset/problem/16/C)|Codeforces|Codeforces Beta Round #16 (Div. 2 Only)|5|\n|<ul><li>- [ ] Done</li></ul>|324|[Unordered Subsequence](http://codeforces.com/problemset/problem/27/C)|Codeforces|Codeforces Beta Round #27 (Codeforces format, Div. 2)|5|\n|<ul><li>- [ ] Done</li></ul>|325|[Mail Stamps](http://codeforces.com/problemset/problem/29/C)|Codeforces|Codeforces Beta Round #29 (Div. 2, Codeforces format)|5|\n|<ul><li>- [ ] Done</li></ul>|326|[Email address](http://codeforces.com/problemset/problem/41/C)|Codeforces|Codeforces Beta Round #40 (Div. 2)|5|\n|<ul><li>- [ ] Done</li></ul>|327|[Newspaper Headline](http://codeforces.com/problemset/problem/91/A)|Codeforces|Codeforces Beta Round #75 (Div. 1 Only) & Codeforces Beta Round #75 (Div. 2 Only)|5|\n|<ul><li>- [ ] Done</li></ul>|328|[Frames](http://codeforces.com/problemset/problem/93/A)|Codeforces|Codeforces Beta Round #76 (Div. 1 Only) & Codeforces Beta Round #76 (Div. 2 Only)|5|\n|<ul><li>- [ ] Done</li></ul>|329|[Grammar Lessons](http://codeforces.com/problemset/problem/113/A)|Codeforces|Codeforces Beta Round #86 (Div. 1 Only) & Codeforces Beta Round #86 (Div. 2 Only)|5|\n|<ul><li>- [ ] Done</li></ul>|330|[Cycle](http://codeforces.com/problemset/problem/117/C)|Codeforces|Codeforces Beta Round #88|5|\n|<ul><li>- [ ] Done</li></ul>|331|[Fancy Number](http://codeforces.com/problemset/problem/118/C)|Codeforces|Codeforces Beta Round #89 (Div. 2)|5|\n|<ul><li>- [ ] Done</li></ul>|332|[Prime Permutation](http://codeforces.com/problemset/problem/123/A)|Codeforces|Codeforces Beta Round #92 (Div. 1 Only) & Codeforces Beta Round #92 (Div. 2 Only)|5|\n|<ul><li>- [ ] Done</li></ul>|333|[Literature Lesson](http://codeforces.com/problemset/problem/138/A)|Codeforces|Codeforces Beta Round #99 (Div. 1) & Codeforces Beta Round #99 (Div. 2)|5|\n|<ul><li>- [ ] Done</li></ul>|334|[Queue](http://codeforces.com/problemset/problem/141/C)|Codeforces|Codeforces Round #101 (Div. 2)|5|\n|<ul><li>- [ ] Done</li></ul>|335|[Help Farmer](http://codeforces.com/problemset/problem/142/A)|Codeforces|Codeforces Round #102 (Div. 1) & Codeforces Round #102 (Div. 2)|5|\n|<ul><li>- [ ] Done</li></ul>|336|[Terse princess](http://codeforces.com/problemset/problem/148/C)|Codeforces|Codeforces Round #105 (Div. 2)|5|\n|<ul><li>- [ ] Done</li></ul>|337|[Wizards and Trolleybuses](http://codeforces.com/problemset/problem/167/A)|Codeforces|Codeforces Round #114 (Div. 1) & Codeforces Round #114 (Div. 2)|5|\n|<ul><li>- [ ] Done</li></ul>|338|[Permutations](http://codeforces.com/problemset/problem/187/A)|Codeforces|Codeforces Round #119 (Div. 1) & Codeforces Round #119 (Div. 2)|5|\n|<ul><li>- [ ] Done</li></ul>|339|[STL](http://codeforces.com/problemset/problem/190/C)|Codeforces|Codeforces Round #120 (Div. 2)|5|\n|<ul><li>- [ ] Done</li></ul>|340|[Dynasty Puzzles](http://codeforces.com/problemset/problem/191/A)|Codeforces|Codeforces Round #121 (Div. 1) & Codeforces Round #121 (Div. 2)|5|\n|<ul><li>- [ ] Done</li></ul>|341|[Cutting Figure](http://codeforces.com/problemset/problem/193/A)|Codeforces|Codeforces Round #122 (Div. 1) & Codeforces Round #122 (Div. 2)|5|\n|<ul><li>- [ ] Done</li></ul>|342|[Clear Symmetry](http://codeforces.com/problemset/problem/201/A)|Codeforces|Codeforces Round #127 (Div. 1) & Codeforces Round #127 (Div. 2)|5|\n|<ul><li>- [ ] Done</li></ul>|343|[Bracket Sequence](http://codeforces.com/problemset/problem/223/A)|Codeforces|Codeforces Round #138 (Div. 1) & Codeforces Round #138 (Div. 2)|5|\n|<ul><li>- [ ] Done</li></ul>|344|[Cycles](http://codeforces.com/problemset/problem/232/A)|Codeforces|Codeforces Round #144 (Div. 1) & Codeforces Round #144 (Div. 2)|5|\n|<ul><li>- [ ] Done</li></ul>|345|[Not Wool Sequences](http://codeforces.com/problemset/problem/238/A)|Codeforces|Codeforces Round #148 (Div. 1) & Codeforces Round #148 (Div. 2)|5|\n|<ul><li>- [ ] Done</li></ul>|346|[Beauty Pageant](http://codeforces.com/problemset/problem/246/C)|Codeforces|Codeforces Round #151 (Div. 2)|5|\n|<ul><li>- [ ] Done</li></ul>|347|[Text Editor](http://codeforces.com/problemset/problem/253/C)|Codeforces|Codeforces Round #154 (Div. 2)|5|\n|<ul><li>- [ ] Done</li></ul>|348|[Balls and Boxes](http://codeforces.com/problemset/problem/260/C)|Codeforces|Codeforces Round #158 (Div. 2)|5|\n|<ul><li>- [ ] Done</li></ul>|349|[Shaass and Lights](http://codeforces.com/problemset/problem/294/C)|Codeforces|Codeforces Round #178 (Div. 2)|5|\n|<ul><li>- [ ] Done</li></ul>|350|[Ivan and Powers of Two](http://codeforces.com/problemset/problem/305/C)|Codeforces|Codeforces Round #184 (Div. 2)|5|\n|<ul><li>- [ ] Done</li></ul>|351|[Sereja and Contest](http://codeforces.com/problemset/problem/314/A)|Codeforces|Codeforces Round #187 (Div. 1) & Codeforces Round #187 (Div. 2)|5|\n|<ul><li>- [ ] Done</li></ul>|352|[Malek Dance Club](http://codeforces.com/problemset/problem/319/A)|Codeforces|Codeforces Round #189 (Div. 1) & Codeforces Round #189 (Div. 2)|5|\n|<ul><li>- [ ] Done</li></ul>|353|[Vasily the Bear and Sequence](http://codeforces.com/problemset/problem/336/C)|Codeforces|Codeforces Round #195 (Div. 2)|5|\n|<ul><li>- [ ] Done</li></ul>|354|[Cupboard and Balloons](http://codeforces.com/problemset/problem/342/C)|Codeforces|Codeforces Round #199 (Div. 2)|5|\n|<ul><li>- [ ] Done</li></ul>|355|[Prime Number](http://codeforces.com/problemset/problem/359/C)|Codeforces|Codeforces Round #209 (Div. 2)|5|\n|<ul><li>- [ ] Done</li></ul>|356|[Levko and Array Recovery](http://codeforces.com/problemset/problem/360/A)|Codeforces|Codeforces Round #210 (Div. 1) & Codeforces Round #210 (Div. 2)|5|\n|<ul><li>- [ ] Done</li></ul>|357|[Inna and Dima](http://codeforces.com/problemset/problem/374/C)|Codeforces|Codeforces Round #220 (Div. 2)|5|\n|<ul><li>- [ ] Done</li></ul>|358|[George and Number](http://codeforces.com/problemset/problem/387/C)|Codeforces|Codeforces Round #227 (Div. 2)|5|\n|<ul><li>- [ ] Done</li></ul>|359|[Prime Swaps](http://codeforces.com/problemset/problem/432/C)|Codeforces|Codeforces Round #246 (Div. 2)|5|\n|<ul><li>- [ ] Done</li></ul>|360|[Ryouko's Memory Note](http://codeforces.com/problemset/problem/433/C)|Codeforces|Codeforces Round #248 (Div. 2) & Codeforces Round #248 (Div. 1)|5|\n|<ul><li>- [ ] Done</li></ul>|361|[Borya and Hanabi](http://codeforces.com/problemset/problem/442/A)|Codeforces|Codeforces Round #253 (Div. 1) & Codeforces Round #253 (Div. 2)|5|\n|<ul><li>- [ ] Done</li></ul>|362|[Sums of Digits](http://codeforces.com/problemset/problem/509/C)|Codeforces|Codeforces Round #289 (Div. 2, ACM ICPC Rules)|5|\n|<ul><li>- [ ] Done</li></ul>|363|[Mike and Frog](http://codeforces.com/problemset/problem/547/A)|Codeforces|Codeforces Round #305 (Div. 1) & Codeforces Round #305 (Div. 2)|5|\n|<ul><li>- [ ] Done</li></ul>|364|[Lengthening Sticks](http://codeforces.com/problemset/problem/571/A)|Codeforces|Codeforces Round #317 [AimFund Thanks-Round] (Div. 1) & Codeforces Round #317 [AimFund Thanks-Round] (Div. 2)|5|\n|<ul><li>- [ ] Done</li></ul>|365|[Wilbur and Points](http://codeforces.com/problemset/problem/596/C)|Codeforces|Codeforces Round #331 (Div. 2)|5|\n|<ul><li>- [ ] Done</li></ul>|366|[Running Track](http://codeforces.com/problemset/problem/615/C)|Codeforces|Codeforces Round #338 (Div. 2)|5|\n|<ul><li>- [ ] Done</li></ul>|367|[Famil Door and Brackets](http://codeforces.com/problemset/problem/629/C)|Codeforces|Codeforces Round #343 (Div. 2)|5|\n|<ul><li>- [ ] Done</li></ul>|368|[Felicity is Coming!](http://codeforces.com/problemset/problem/757/C)|Codeforces|Codecraft-17 and Codeforces Round #391 (Div. 1 + Div. 2, combined)|5|\n|<ul><li>- [ ] Done</li></ul>|369|[Two strings](http://codeforces.com/problemset/problem/762/C)|Codeforces|Educational Codeforces Round 17|5|\n|<ul><li>- [ ] Done</li></ul>|370|[Berzerk](http://codeforces.com/problemset/problem/786/A)|Codeforces|Codeforces Round #406 (Div. 1) & Codeforces Round #406 (Div. 2)|5|\n|<ul><li>- [ ] Done</li></ul>|371|[Bank Hacking](http://codeforces.com/problemset/problem/796/C)|Codeforces|Codeforces Round #408 (Div. 2)|5|\n|<ul><li>- [ ] Done</li></ul>|372|[Strange Game On Matrix](http://codeforces.com/problemset/problem/873/C)|Codeforces|Educational Codeforces Round 30|5|\n|<ul><li>- [ ] Done</li></ul>|373|[Looking for Order](http://codeforces.com/problemset/problem/8/C)|Codeforces|Codeforces Beta Round #8|6|\n|<ul><li>- [ ] Done</li></ul>|374|[Industrial Nim](http://codeforces.com/problemset/problem/15/C)|Codeforces|Codeforces Beta Round #15|6|\n|<ul><li>- [ ] Done</li></ul>|375|[Stripe 2](http://codeforces.com/problemset/problem/21/C)|Codeforces|Codeforces Alpha Round #21 (Codeforces format)|6|\n|<ul><li>- [ ] Done</li></ul>|376|[System Administrator](http://codeforces.com/problemset/problem/22/C)|Codeforces|Codeforces Beta Round #22 (Div. 2 Only)|6|\n|<ul><li>- [ ] Done</li></ul>|377|[Shooting Gallery](http://codeforces.com/problemset/problem/30/C)|Codeforces|Codeforces Beta Round #30 (Codeforces format)|6|\n|<ul><li>- [ ] Done</li></ul>|378|[Schedule](http://codeforces.com/problemset/problem/31/C)|Codeforces|Codeforces Beta Round #31 (Div. 2, Codeforces format)|6|\n|<ul><li>- [ ] Done</li></ul>|379|[Flea](http://codeforces.com/problemset/problem/32/C)|Codeforces|Codeforces Beta Round #32 (Div. 2, Codeforces format)|6|\n|<ul><li>- [ ] Done</li></ul>|380|[Wonderful Randomized Sum](http://codeforces.com/problemset/problem/33/C)|Codeforces|Codeforces Beta Round #33 (Codeforces format)|6|\n|<ul><li>- [ ] Done</li></ul>|381|[Blinds](http://codeforces.com/problemset/problem/38/C)|Codeforces|School Personal Contest #1 (Winter Computer School 2010/11) - Codeforces Beta Round #38 (ACM-ICPC Rules)|6|\n|<ul><li>- [ ] Done</li></ul>|382|[Hamsters and Tigers](http://codeforces.com/problemset/problem/46/C)|Codeforces|School Personal Contest #2 (Winter Computer School 2010/11) - Codeforces Beta Round #43 (ACM-ICPC Rules)|6|\n|<ul><li>- [ ] Done</li></ul>|383|[Array](http://codeforces.com/problemset/problem/57/C)|Codeforces|Codeforces Beta Round #53|6|\n|<ul><li>- [ ] Done</li></ul>|384|[Trees](http://codeforces.com/problemset/problem/58/C)|Codeforces|Codeforces Beta Round #54 (Div. 2)|6|\n|<ul><li>- [ ] Done</li></ul>|385|[Title](http://codeforces.com/problemset/problem/59/C)|Codeforces|Codeforces Beta Round #55 (Div. 2)|6|\n|<ul><li>- [ ] Done</li></ul>|386|[Bulls and Cows](http://codeforces.com/problemset/problem/63/C)|Codeforces|Codeforces Beta Round #59 (Div. 2)|6|\n|<ul><li>- [ ] Done</li></ul>|387|[Heroes](http://codeforces.com/problemset/problem/77/A)|Codeforces|Codeforces Beta Round #69 (Div. 1 Only) & Codeforces Beta Round #69 (Div. 2 Only)|6|\n|<ul><li>- [ ] Done</li></ul>|388|[Beaver Game](http://codeforces.com/problemset/problem/78/C)|Codeforces|Codeforces Beta Round #70 (Div. 2)|6|\n|<ul><li>- [ ] Done</li></ul>|389|[Beaver](http://codeforces.com/problemset/problem/79/C)|Codeforces|Codeforces Beta Round #71|6|\n|<ul><li>- [ ] Done</li></ul>|390|[Robbery](http://codeforces.com/problemset/problem/89/A)|Codeforces|Codeforces Beta Round #74 (Div. 1 Only) & Codeforces Beta Round #74 (Div. 2 Only)|6|\n|<ul><li>- [ ] Done</li></ul>|391|[Hockey](http://codeforces.com/problemset/problem/95/A)|Codeforces|Codeforces Beta Round #77 (Div. 1 Only) & Codeforces Beta Round #77 (Div. 2 Only)|6|\n|<ul><li>- [ ] Done</li></ul>|392|[Hot Bath](http://codeforces.com/problemset/problem/126/A)|Codeforces|Codeforces Beta Round #93 (Div. 1 Only) & Codeforces Beta Round #93 (Div. 2 Only)|6|\n|<ul><li>- [ ] Done</li></ul>|393|[Police Station](http://codeforces.com/problemset/problem/208/C)|Codeforces|Codeforces Round #130 (Div. 2)|6|\n|<ul><li>- [ ] Done</li></ul>|394|[Game](http://codeforces.com/problemset/problem/213/A)|Codeforces|Codeforces Round #131 (Div. 1) & Codeforces Round #131 (Div. 2)|6|\n|<ul><li>- [ ] Done</li></ul>|395|[Hiring Staff](http://codeforces.com/problemset/problem/216/C)|Codeforces|Codeforces Round #133 (Div. 2)|6|\n|<ul><li>- [ ] Done</li></ul>|396|[Reducing Fractions](http://codeforces.com/problemset/problem/222/C)|Codeforces|Codeforces Round #137 (Div. 2)|6|\n|<ul><li>- [ ] Done</li></ul>|397|[Anagram](http://codeforces.com/problemset/problem/254/C)|Codeforces|Codeforces Round #155 (Div. 2)|6|\n|<ul><li>- [ ] Done</li></ul>|398|[Below the Diagonal](http://codeforces.com/problemset/problem/266/C)|Codeforces|Codeforces Round #163 (Div. 2)|6|\n|<ul><li>- [ ] Done</li></ul>|399|[Rectangle Puzzle](http://codeforces.com/problemset/problem/280/A)|Codeforces|Codeforces Round #172 (Div. 1) & Codeforces Round #172 (Div. 2)|6|\n|<ul><li>- [ ] Done</li></ul>|400|[Dima and Containers](http://codeforces.com/problemset/problem/358/C)|Codeforces|Codeforces Round #208 (Div. 2)|6|\n|<ul><li>- [ ] Done</li></ul>|401|[Insertion Sort](http://codeforces.com/problemset/problem/362/C)|Codeforces|Codeforces Round #212 (Div. 2)|6|\n|<ul><li>- [ ] Done</li></ul>|402|[Mittens](http://codeforces.com/problemset/problem/370/C)|Codeforces|Codeforces Round #217 (Div. 2)|6|\n|<ul><li>- [ ] Done</li></ul>|403|[Warrior and Archer](http://codeforces.com/problemset/problem/594/A)|Codeforces|Codeforces Round #330 (Div. 1) & Codeforces Round #330 (Div. 2)|6|\n|<ul><li>- [ ] Done</li></ul>|404|[International Olympiad](http://codeforces.com/problemset/problem/662/D)|Codeforces|CROC 2016 - Final Round [Private, For Onsite Finalists Only]|6|\n|<ul><li>- [ ] Done</li></ul>|405|[Chris and Road](http://codeforces.com/problemset/problem/703/C)|Codeforces|Codeforces Round #365 (Div. 2)|6|\n|<ul><li>- [ ] Done</li></ul>|406|[Commentator problem](http://codeforces.com/problemset/problem/2/C)|Codeforces|Codeforces Beta Round #2|7|\n|<ul><li>- [ ] Done</li></ul>|407|[Digital Root](http://codeforces.com/problemset/problem/10/C)|Codeforces|Codeforces Beta Round #10|7|\n|<ul><li>- [ ] Done</li></ul>|408|[Sequence of points](http://codeforces.com/problemset/problem/24/C)|Codeforces|Codeforces Beta Round #24|7|\n|<ul><li>- [ ] Done</li></ul>|409|[Old Berland Language](http://codeforces.com/problemset/problem/37/C)|Codeforces|Codeforces Beta Round #37|7|\n|<ul><li>- [ ] Done</li></ul>|410|[Disposition](http://codeforces.com/problemset/problem/49/C)|Codeforces|Codeforces Beta Round #46 (Div. 2)|7|\n|<ul><li>- [ ] Done</li></ul>|411|[Three Base Stations](http://codeforces.com/problemset/problem/51/C)|Codeforces|Codeforces Beta Round #48|7|\n|<ul><li>- [ ] Done</li></ul>|412|[First Digit Law](http://codeforces.com/problemset/problem/54/C)|Codeforces|Codeforces Beta Round #50|7|\n|<ul><li>- [ ] Done</li></ul>|413|[Pie or die](http://codeforces.com/problemset/problem/55/C)|Codeforces|Codeforces Beta Round #51|7|\n|<ul><li>- [ ] Done</li></ul>|414|[Corporation Mail](http://codeforces.com/problemset/problem/56/C)|Codeforces|Codeforces Beta Round #52 (Div. 2)|7|\n|<ul><li>- [ ] Done</li></ul>|415|[Harry Potter and the Golden Snitch](http://codeforces.com/problemset/problem/65/C)|Codeforces|Codeforces Beta Round #60|7|\n|<ul><li>- [ ] Done</li></ul>|416|[Petya and File System](http://codeforces.com/problemset/problem/66/C)|Codeforces|Codeforces Beta Round #61 (Div. 2)|7|\n|<ul><li>- [ ] Done</li></ul>|417|[LionAge II](http://codeforces.com/problemset/problem/73/C)|Codeforces|Codeforces Beta Round #66|7|\n|<ul><li>- [ ] Done</li></ul>|418|[Chessboard Billiard](http://codeforces.com/problemset/problem/74/C)|Codeforces|Codeforces Beta Round #68|7|\n|<ul><li>- [ ] Done</li></ul>|419|[Biathlon](http://codeforces.com/problemset/problem/84/C)|Codeforces|Codeforces Beta Round #72 (Div. 2 Only)|7|\n|<ul><li>- [ ] Done</li></ul>|420|[Help Victoria the Wise](http://codeforces.com/problemset/problem/98/A)|Codeforces|Codeforces Beta Round #78 (Div. 1 Only) & Codeforces Beta Round #78 (Div. 2 Only)|7|\n|<ul><li>- [ ] Done</li></ul>|421|[Education Reform](http://codeforces.com/problemset/problem/119/C)|Codeforces|Codeforces Beta Round #90|7|\n|<ul><li>- [ ] Done</li></ul>|422|[Geometry Horse](http://codeforces.com/problemset/problem/175/C)|Codeforces|Codeforces Round #115|7|\n|<ul><li>- [ ] Done</li></ul>|423|[Try and Catch](http://codeforces.com/problemset/problem/195/C)|Codeforces|Codeforces Round #123 (Div. 2)|7|\n|<ul><li>- [ ] Done</li></ul>|424|[Football Championship](http://codeforces.com/problemset/problem/200/C)|Codeforces|Codeforces Round #126 (Div. 2)|7|\n|<ul><li>- [ ] Done</li></ul>|425|[Robo-Footballer](http://codeforces.com/problemset/problem/248/C)|Codeforces|Codeforces Round #152 (Div. 2) & Codeforces Round #152 (Div. 1)|7|\n|<ul><li>- [ ] Done</li></ul>|426|[Circle of Numbers](http://codeforces.com/problemset/problem/263/C)|Codeforces|Codeforces Round #161 (Div. 2)|7|\n|<ul><li>- [ ] Done</li></ul>|427|[Students' Revenge](http://codeforces.com/problemset/problem/332/C)|Codeforces|Codeforces Round #193 (Div. 2)|7|\n|<ul><li>- [ ] Done</li></ul>|428|[Blocked Points](http://codeforces.com/problemset/problem/392/A)|Codeforces|Codeforces Round #230 (Div. 1) & Codeforces Round #230 (Div. 2)|7|\n|<ul><li>- [ ] Done</li></ul>|429|[On Number of Decompositions into Multipliers](http://codeforces.com/problemset/problem/396/A)|Codeforces|Codeforces Round #232 (Div. 1) & Codeforces Round #232 (Div. 2)|7|\n|<ul><li>- [ ] Done</li></ul>|430|[Cards](http://codeforces.com/problemset/problem/398/A)|Codeforces|Codeforces Round #233 (Div. 1) & Codeforces Round #233 (Div. 2)|7|\n|<ul><li>- [ ] Done</li></ul>|431|[Vladik and chat](http://codeforces.com/problemset/problem/754/C)|Codeforces|Codeforces Round #390 (Div. 2)|7|\n|<ul><li>- [ ] Done</li></ul>|432|[How Many Squares?](http://codeforces.com/problemset/problem/11/C)|Codeforces|Codeforces Beta Round #11|8|\n|<ul><li>- [ ] Done</li></ul>|433|[Balance](http://codeforces.com/problemset/problem/17/C)|Codeforces|Codeforces Beta Round #17|8|\n|<ul><li>- [ ] Done</li></ul>|434|[Deletion of Repeats](http://codeforces.com/problemset/problem/19/C)|Codeforces|Codeforces Beta Round #19|8|\n|<ul><li>- [ ] Done</li></ul>|435|[Oranges and Apples](http://codeforces.com/problemset/problem/23/C)|Codeforces|Codeforces Beta Round #23|8|\n|<ul><li>- [ ] Done</li></ul>|436|[Parquet](http://codeforces.com/problemset/problem/26/C)|Codeforces|Codeforces Beta Round #26 (Codeforces format)|8|\n|<ul><li>- [ ] Done</li></ul>|437|[Bath Queue](http://codeforces.com/problemset/problem/28/C)|Codeforces|Codeforces Beta Round #28 (Codeforces format)|8|\n|<ul><li>- [ ] Done</li></ul>|438|[Safe cracking](http://codeforces.com/problemset/problem/42/C)|Codeforces|Codeforces Beta Round #41|8|\n|<ul><li>- [ ] Done</li></ul>|439|[Crossword](http://codeforces.com/problemset/problem/47/C)|Codeforces|Codeforces Beta Round #44 (Div. 2)|8|\n|<ul><li>- [ ] Done</li></ul>|440|[The Race](http://codeforces.com/problemset/problem/48/C)|Codeforces|School Personal Contest #3 (Winter Computer School 2010/11) - Codeforces Beta Round #45 (ACM-ICPC Rules)|8|\n|<ul><li>- [ ] Done</li></ul>|441|[Happy Farm 5](http://codeforces.com/problemset/problem/50/C)|Codeforces|Codeforces Beta Round #47|8|\n|<ul><li>- [ ] Done</li></ul>|442|[Mushroom Strife](http://codeforces.com/problemset/problem/60/C)|Codeforces|Codeforces Beta Round #56|8|\n|<ul><li>- [ ] Done</li></ul>|443|[Capture Valerian](http://codeforces.com/problemset/problem/61/C)|Codeforces|Codeforces Beta Round #57 (Div. 2)|8|\n|<ul><li>- [ ] Done</li></ul>|444|[Game](http://codeforces.com/problemset/problem/69/C)|Codeforces|Codeforces Beta Round #63 (Div. 2)|8|\n|<ul><li>- [ ] Done</li></ul>|445|[Lucky Tickets](http://codeforces.com/problemset/problem/70/C)|Codeforces|Codeforces Beta Round #64|8|\n|<ul><li>- [ ] Done</li></ul>|446|[Optimal Sum](http://codeforces.com/problemset/problem/182/C)|Codeforces|Codeforces Round #117 (Div. 2)|8|\n|<ul><li>- [ ] Done</li></ul>|447|[Crosses](http://codeforces.com/problemset/problem/215/C)|Codeforces|Codeforces Round #132 (Div. 2)|8|\n|<ul><li>- [ ] Done</li></ul>|448|[Fractal Detector](http://codeforces.com/problemset/problem/228/C)|Codeforces|Codeforces Round #141 (Div. 2)|8|\n|<ul><li>- [ ] Done</li></ul>|449|[Inna and Candy Boxes](http://codeforces.com/problemset/problem/390/C)|Codeforces|Codeforces Round #229 (Div. 2)|8|\n|<ul><li>- [ ] Done</li></ul>|450|[Dominoes](http://codeforces.com/problemset/problem/394/C)|Codeforces|Codeforces Round #231 (Div. 2)|8|\n|<ul><li>- [ ] Done</li></ul>|451|[Bowls](http://codeforces.com/problemset/problem/36/C)|Codeforces|Codeforces Beta Round #36|9|\n|<ul><li>- [ ] Done</li></ul>|452|[Berland Square](http://codeforces.com/problemset/problem/40/C)|Codeforces|Codeforces Beta Round #39|9|\n|<ul><li>- [ ] Done</li></ul>|453|[Inquisition](http://codeforces.com/problemset/problem/62/C)|Codeforces|Codeforces Beta Round #58|9|\n|<ul><li>- [ ] Done</li></ul>|454|[Synchrophasotron](http://codeforces.com/problemset/problem/68/C)|Codeforces|Codeforces Beta Round #62|9|\n|<ul><li>- [ ] Done</li></ul>|455|[Item World](http://codeforces.com/problemset/problem/105/C)|Codeforces|Codeforces Beta Round #81|9|\n|<ul><li>- [ ] Done</li></ul>|456|[Beautiful Function](http://codeforces.com/problemset/problem/593/C)|Codeforces|Codeforces Round #329 (Div. 2)|9|\n|<ul><li>- [ ] Done</li></ul>|457|[Fire in the City](http://codeforces.com/problemset/problem/845/E)|Codeforces|Educational Codeforces Round 27|9|\n|<ul><li>- [ ] Done</li></ul>|458|[Strange Radiation](http://codeforces.com/problemset/problem/832/C)|Codeforces|Codeforces Round #425 (Div. 2)|9|\n|<ul><li>- [ ] Done</li></ul>|459|[Mister B and Boring Game](http://codeforces.com/problemset/problem/819/A)|Codeforces|Codeforces Round #421 (Div. 1) & Codeforces Round #421 (Div. 2)|9|\n|<ul><li>- [ ] Done</li></ul>|460|[Maze 2D](http://codeforces.com/problemset/problem/413/E)|Codeforces|Coder-Strike 2014 - Round 2|9|\n"
  },
  {
    "path": "categories/010. Codeforces_Div._2_-_B_Problems/README.md",
    "content": "# 010. Codeforces_Div._2_-_B_Problems\n\n\n| Checkbox | ID | Problem Name|Online Judge|Year|Contest|Difficulty Level|\n|:---:|:---:|:---:|:---:|:---:|:---:|:---:|\n|<ul><li>- [ ] Done</li></ul>|1|[Spreadsheet](http://codeforces.com/problemset/problem/1/B)|Codeforces||Codeforces Beta Round #1|1|\n|<ul><li>- [ ] Done</li></ul>|2|[Before an Exam](http://codeforces.com/problemset/problem/4/B)|Codeforces||Codeforces Beta Round #4 (Div. 2 Only)|1|\n|<ul><li>- [ ] Done</li></ul>|3|[Borze](http://codeforces.com/problemset/problem/32/B)|Codeforces||Codeforces Beta Round #32 (Div. 2, Codeforces format)|1|\n|<ul><li>- [ ] Done</li></ul>|4|[Sale](http://codeforces.com/problemset/problem/34/B)|Codeforces||Codeforces Beta Round #34 (Div. 2)|1|\n|<ul><li>- [ ] Done</li></ul>|5|[Present from Lena](http://codeforces.com/problemset/problem/118/B)|Codeforces||Codeforces Beta Round #89 (Div. 2)|1|\n|<ul><li>- [ ] Done</li></ul>|6|[Drinks](http://codeforces.com/problemset/problem/200/B)|Codeforces||Codeforces Round #126 (Div. 2)|1|\n|<ul><li>- [ ] Done</li></ul>|7|[T-primes](http://codeforces.com/problemset/problem/230/B)|Codeforces||Codeforces Round #142 (Div. 2)|1|\n|<ul><li>- [ ] Done</li></ul>|8|[Roadside Trees (Simplified Edition)](http://codeforces.com/problemset/problem/265/B)|Codeforces||Codeforces Round #162 (Div. 2)|1|\n|<ul><li>- [ ] Done</li></ul>|9|[Queue at the School](http://codeforces.com/problemset/problem/266/B)|Codeforces||Codeforces Round #163 (Div. 2)|1|\n|<ul><li>- [ ] Done</li></ul>|10|[Buttons](http://codeforces.com/problemset/problem/268/B)|Codeforces||Codeforces Round #164 (Div. 2)|1|\n|<ul><li>- [ ] Done</li></ul>|11|[Little Girl and Game](http://codeforces.com/problemset/problem/276/B)|Codeforces||Codeforces Round #169 (Div. 2)|1|\n|<ul><li>- [ ] Done</li></ul>|12|[Books](http://codeforces.com/problemset/problem/279/B)|Codeforces||Codeforces Round #171 (Div. 2)|1|\n|<ul><li>- [ ] Done</li></ul>|13|[Ilya and Queries](http://codeforces.com/problemset/problem/313/B)|Codeforces||Codeforces Round #186 (Div. 2)|1|\n|<ul><li>- [ ] Done</li></ul>|14|[Hungry Sequence](http://codeforces.com/problemset/problem/327/B)|Codeforces||Codeforces Round #191 (Div. 2)|1|\n|<ul><li>- [ ] Done</li></ul>|15|[Road Construction](http://codeforces.com/problemset/problem/330/B)|Codeforces||Codeforces Round #192 (Div. 2)|1|\n|<ul><li>- [ ] Done</li></ul>|16|[Xenia and Ringroad](http://codeforces.com/problemset/problem/339/B)|Codeforces||Codeforces Round #197 (Div. 2)|1|\n|<ul><li>- [ ] Done</li></ul>|17|[Fence](http://codeforces.com/problemset/problem/363/B)|Codeforces||Codeforces Round #211 (Div. 2)|1|\n|<ul><li>- [ ] Done</li></ul>|18|[Sereja and Suffixes](http://codeforces.com/problemset/problem/368/B)|Codeforces||Codeforces Round #215 (Div. 2)|1|\n|<ul><li>- [ ] Done</li></ul>|19|[Prison Transfer](http://codeforces.com/problemset/problem/427/B)|Codeforces||Codeforces Round #244 (Div. 2)|1|\n|<ul><li>- [ ] Done</li></ul>|20|[Kuriyama Mirai's Stones](http://codeforces.com/problemset/problem/433/B)|Codeforces||Codeforces Round #248 (Div. 2)|1|\n|<ul><li>- [ ] Done</li></ul>|21|[Devu, the Dumb Guy](http://codeforces.com/problemset/problem/439/B)|Codeforces||Codeforces Round #251 (Div. 2)|1|\n|<ul><li>- [ ] Done</li></ul>|22|[DZY Loves Strings](http://codeforces.com/problemset/problem/447/B)|Codeforces||Codeforces Round #255 (Div. 2)|1|\n|<ul><li>- [ ] Done</li></ul>|23|[Suffix Structures](http://codeforces.com/problemset/problem/448/B)|Codeforces||Codeforces Round #256 (Div. 2)|1|\n|<ul><li>- [ ] Done</li></ul>|24|[Jzzhu and Sequences](http://codeforces.com/problemset/problem/450/B)|Codeforces||Codeforces Round #257 (Div. 2)|1|\n|<ul><li>- [ ] Done</li></ul>|25|[Sort the Array](http://codeforces.com/problemset/problem/451/B)|Codeforces||Codeforces Round #258 (Div. 2)|1|\n|<ul><li>- [ ] Done</li></ul>|26|[Little Pony and Sort by Shift](http://codeforces.com/problemset/problem/454/B)|Codeforces||Codeforces Round #259 (Div. 2)|1|\n|<ul><li>- [ ] Done</li></ul>|27|[Fedya and Maths](http://codeforces.com/problemset/problem/456/B)|Codeforces||Codeforces Round #260 (Div. 2)|1|\n|<ul><li>- [ ] Done</li></ul>|28|[Pashmak and Flowers](http://codeforces.com/problemset/problem/459/B)|Codeforces||Codeforces Round #261 (Div. 2)|1|\n|<ul><li>- [ ] Done</li></ul>|29|[Caisa and Pylons](http://codeforces.com/problemset/problem/463/B)|Codeforces||Codeforces Round #264 (Div. 2)|1|\n|<ul><li>- [ ] Done</li></ul>|30|[Inbox (100500)](http://codeforces.com/problemset/problem/465/B)|Codeforces||Codeforces Round #265 (Div. 2)|1|\n|<ul><li>- [ ] Done</li></ul>|31|[Fedor and New Game](http://codeforces.com/problemset/problem/467/B)|Codeforces||Codeforces Round #267 (Div. 2)|1|\n|<ul><li>- [ ] Done</li></ul>|32|[Worms](http://codeforces.com/problemset/problem/474/B)|Codeforces||Codeforces Round #271 (Div. 2)|1|\n|<ul><li>- [ ] Done</li></ul>|33|[Dreamoon and WiFi](http://codeforces.com/problemset/problem/476/B)|Codeforces||Codeforces Round #272 (Div. 2)|1|\n|<ul><li>- [ ] Done</li></ul>|34|[Random Teams](http://codeforces.com/problemset/problem/478/B)|Codeforces||Codeforces Round #273 (Div. 2)|1|\n|<ul><li>- [ ] Done</li></ul>|35|[OR in Matrix](http://codeforces.com/problemset/problem/486/B)|Codeforces||Codeforces Round #277 (Div. 2)|1|\n|<ul><li>- [ ] Done</li></ul>|36|[BerSU Ball](http://codeforces.com/problemset/problem/489/B)|Codeforces||Codeforces Round #277.5 (Div. 2)|1|\n|<ul><li>- [ ] Done</li></ul>|37|[Vanya and Lanterns](http://codeforces.com/problemset/problem/492/B)|Codeforces||Codeforces Round #280 (Div. 2)|1|\n|<ul><li>- [ ] Done</li></ul>|38|[Lecture](http://codeforces.com/problemset/problem/499/B)|Codeforces||Codeforces Round #284 (Div. 2)|1|\n|<ul><li>- [ ] Done</li></ul>|39|[Misha and Changing Handles](http://codeforces.com/problemset/problem/501/B)|Codeforces||Codeforces Round #285 (Div. 2)|1|\n|<ul><li>- [ ] Done</li></ul>|40|[Amr and Pins](http://codeforces.com/problemset/problem/507/B)|Codeforces||Codeforces Round #287 (Div. 2)|1|\n|<ul><li>- [ ] Done</li></ul>|41|[Anton and currency you all know](http://codeforces.com/problemset/problem/508/B)|Codeforces||Codeforces Round #288 (Div. 2)|1|\n|<ul><li>- [ ] Done</li></ul>|42|[Han Solo and Lazer Gun](http://codeforces.com/problemset/problem/514/B)|Codeforces||Codeforces Round #291 (Div. 2)|1|\n|<ul><li>- [ ] Done</li></ul>|43|[A and B and Compilation Errors](http://codeforces.com/problemset/problem/519/B)|Codeforces||Codeforces Round #294 (Div. 2)|1|\n|<ul><li>- [ ] Done</li></ul>|44|[Two Buttons](http://codeforces.com/problemset/problem/520/B)|Codeforces||Codeforces Round #295 (Div. 2)|1|\n|<ul><li>- [ ] Done</li></ul>|45|[Tavas and SaDDas](http://codeforces.com/problemset/problem/535/B)|Codeforces||Codeforces Round #299 (Div. 2)|1|\n|<ul><li>- [ ] Done</li></ul>|46|[Quasi Binary](http://codeforces.com/problemset/problem/538/B)|Codeforces||Codeforces Round #300|1|\n|<ul><li>- [ ] Done</li></ul>|47|[Equidistant String](http://codeforces.com/problemset/problem/545/B)|Codeforces||Codeforces Round #303 (Div. 2)|1|\n|<ul><li>- [ ] Done</li></ul>|48|[Soldier and Badges](http://codeforces.com/problemset/problem/546/B)|Codeforces||Codeforces Round #304 (Div. 2)|1|\n|<ul><li>- [ ] Done</li></ul>|49|[Preparing Olympiad](http://codeforces.com/problemset/problem/550/B)|Codeforces||Codeforces Round #306 (Div. 2)|1|\n|<ul><li>- [ ] Done</li></ul>|50|[Vanya and Books](http://codeforces.com/problemset/problem/552/B)|Codeforces||Codeforces Round #308 (Div. 2)|1|\n|<ul><li>- [ ] Done</li></ul>|51|[Berland National Library](http://codeforces.com/problemset/problem/567/B)|Codeforces||Codeforces Round #Pi (Div. 2)|1|\n|<ul><li>- [ ] Done</li></ul>|52|[Simple Game](http://codeforces.com/problemset/problem/570/B)|Codeforces||Codeforces Round #316 (Div. 2)|1|\n|<ul><li>- [ ] Done</li></ul>|53|[Kefa and Company](http://codeforces.com/problemset/problem/580/B)|Codeforces||Codeforces Round #321 (Div. 2)|1|\n|<ul><li>- [ ] Done</li></ul>|54|[Luxurious Houses](http://codeforces.com/problemset/problem/581/B)|Codeforces||Codeforces Round #322 (Div. 2)|1|\n|<ul><li>- [ ] Done</li></ul>|55|[Robot's Task](http://codeforces.com/problemset/problem/583/B)|Codeforces||Codeforces Round #323 (Div. 2)|1|\n|<ul><li>- [ ] Done</li></ul>|56|[Duff in Love](http://codeforces.com/problemset/problem/588/B)|Codeforces||Codeforces Round #326 (Div. 2)|1|\n|<ul><li>- [ ] Done</li></ul>|57|[The Monster and the Squirrel](http://codeforces.com/problemset/problem/592/B)|Codeforces||Codeforces Round #328 (Div. 2)|1|\n|<ul><li>- [ ] Done</li></ul>|58|[Wilbur and Array](http://codeforces.com/problemset/problem/596/B)|Codeforces||Codeforces Round #331 (Div. 2)|1|\n|<ul><li>- [ ] Done</li></ul>|59|[Chocolate](http://codeforces.com/problemset/problem/617/B)|Codeforces||Codeforces Round #340 (Div. 2)|1|\n|<ul><li>- [ ] Done</li></ul>|60|[Wet Shark and Bishops](http://codeforces.com/problemset/problem/621/B)|Codeforces||Codeforces Round #341 (Div. 2)|1|\n|<ul><li>- [ ] Done</li></ul>|61|[Beautiful Paintings](http://codeforces.com/problemset/problem/651/B)|Codeforces||Codeforces Round #345 (Div. 2)|1|\n|<ul><li>- [ ] Done</li></ul>|62|[Game of Robots](http://codeforces.com/problemset/problem/670/B)|Codeforces||Codeforces Round #350 (Div. 2)|1|\n|<ul><li>- [ ] Done</li></ul>|63|[Different is Good](http://codeforces.com/problemset/problem/672/B)|Codeforces||Codeforces Round #352 (Div. 2)|1|\n|<ul><li>- [ ] Done</li></ul>|64|[Bear and Finding Criminals](http://codeforces.com/problemset/problem/680/B)|Codeforces||Codeforces Round #356 (Div. 2)|1|\n|<ul><li>- [ ] Done</li></ul>|65|[Alyona and Mex](http://codeforces.com/problemset/problem/682/B)|Codeforces||Codeforces Round #358 (Div. 2)|1|\n|<ul><li>- [ ] Done</li></ul>|66|[Lovely Palindromes](http://codeforces.com/problemset/problem/688/B)|Codeforces||Codeforces Round #360 (Div. 2)|1|\n|<ul><li>- [ ] Done</li></ul>|67|[Cells Not Under Attack](http://codeforces.com/problemset/problem/701/B)|Codeforces||Codeforces Round #364 (Div. 2)|1|\n|<ul><li>- [ ] Done</li></ul>|68|[Spider Man](http://codeforces.com/problemset/problem/705/B)|Codeforces||Codeforces Round #366 (Div. 2)|1|\n|<ul><li>- [ ] Done</li></ul>|69|[Interesting drink](http://codeforces.com/problemset/problem/706/B)|Codeforces||Codeforces Round #367 (Div. 2)|1|\n|<ul><li>- [ ] Done</li></ul>|70|[Bakery](http://codeforces.com/problemset/problem/707/B)|Codeforces||Codeforces Round #368 (Div. 2)|1|\n|<ul><li>- [ ] Done</li></ul>|71|[Chris and Magic Square](http://codeforces.com/problemset/problem/711/B)|Codeforces||Codeforces Round #369 (Div. 2)|1|\n|<ul><li>- [ ] Done</li></ul>|72|[Memory and Trident](http://codeforces.com/problemset/problem/712/B)|Codeforces||Codeforces Round #370 (Div. 2)|1|\n|<ul><li>- [ ] Done</li></ul>|73|[Filya and Homework](http://codeforces.com/problemset/problem/714/B)|Codeforces||Codeforces Round #371 (Div. 2)|1|\n|<ul><li>- [ ] Done</li></ul>|74|[Complete the Word](http://codeforces.com/problemset/problem/716/B)|Codeforces||Codeforces Round #372 (Div. 2)|1|\n|<ul><li>- [ ] Done</li></ul>|75|[Passwords](http://codeforces.com/problemset/problem/721/B)|Codeforces||Codeforces Round #374 (Div. 2)|1|\n|<ul><li>- [ ] Done</li></ul>|76|[Text Document Analysis](http://codeforces.com/problemset/problem/723/B)|Codeforces||Codeforces Round #375 (Div. 2)|1|\n|<ul><li>- [ ] Done</li></ul>|77|[Arrival of the General](http://codeforces.com/problemset/problem/144/A)|Codeforces||Codeforces Round #103 (Div. 2)|1|\n|<ul><li>- [ ] Done</li></ul>|78|[Cormen --- The Best Friend Of a Man](http://codeforces.com/problemset/problem/732/B)|Codeforces||Codeforces Round #377 (Div. 2)|1|\n|<ul><li>- [ ] Done</li></ul>|79|[Parade](http://codeforces.com/problemset/problem/733/B)|Codeforces||Codeforces Round #378 (Div. 2)|1|\n|<ul><li>- [ ] Done</li></ul>|80|[Anton and Digits](http://codeforces.com/problemset/problem/734/B)|Codeforces||Codeforces Round #379 (Div. 2)|1|\n|<ul><li>- [ ] Done</li></ul>|81|[Soldier and Bananas](http://codeforces.com/problemset/problem/546/A)|Codeforces||Codeforces Round #304 (Div. 2)|1|\n|<ul><li>- [ ] Done</li></ul>|82|[Decoding](http://codeforces.com/problemset/problem/746/B)|Codeforces||Codeforces Round #386 (Div. 2)|1|\n|<ul><li>- [ ] Done</li></ul>|83|[Chloe and the sequence ](http://codeforces.com/problemset/problem/743/B)|Codeforces||Codeforces Round #384 (Div. 2)|1|\n|<ul><li>- [ ] Done</li></ul>|84|[Blown Garland](http://codeforces.com/problemset/problem/758/B)|Codeforces||Codeforces Round #392 (Div. 2)|1|\n|<ul><li>- [ ] Done</li></ul>|85|[Tetrahedron](http://codeforces.com/problemset/problem/166/E)|Codeforces||Codeforces Round #113 (Div. 2)|1|\n|<ul><li>- [ ] Done</li></ul>|86|[Mahmoud and a Triangle](http://codeforces.com/problemset/problem/766/B)|Codeforces||Codeforces Round #396 (Div. 2)|1|\n|<ul><li>- [ ] Done</li></ul>|87|[Timofey and cubes](http://codeforces.com/problemset/problem/764/B)|Codeforces||Codeforces Round #395 (Div. 2)|1|\n|<ul><li>- [ ] Done</li></ul>|88|[Sherlock and his girlfriend](http://codeforces.com/problemset/problem/776/B)|Codeforces||ICM Technex 2017 and Codeforces Round #400 (Div. 1 + Div. 2, combined)|1|\n|<ul><li>- [ ] Done</li></ul>|89|[Weird Rounding](http://codeforces.com/problemset/problem/779/B)|Codeforces||Codeforces Round #402 (Div. 2)|1|\n|<ul><li>- [ ] Done</li></ul>|90|[Anton and Classes](http://codeforces.com/problemset/problem/785/B)|Codeforces||Codeforces Round #404 (Div. 2)|1|\n|<ul><li>- [ ] Done</li></ul>|91|[3-palindrome](http://codeforces.com/problemset/problem/805/B)|Codeforces||Codeforces Round #411 (Div. 2)|1|\n|<ul><li>- [ ] Done</li></ul>|92|[Bear and Elections](http://codeforces.com/problemset/problem/574/A)|Codeforces||Codeforces Round #318 [RussianCodeCup Thanks-Round] (Div. 2)|1|\n|<ul><li>- [ ] Done</li></ul>|93|[Godsend](http://codeforces.com/problemset/problem/841/B)|Codeforces||Codeforces Round #429 (Div. 2)|1|\n|<ul><li>- [ ] Done</li></ul>|94|[The number on the board](http://codeforces.com/problemset/problem/835/B)|Codeforces||Codeforces Round #427 (Div. 2)|1|\n|<ul><li>- [ ] Done</li></ul>|95|[Keyboard Layouts](http://codeforces.com/problemset/problem/831/B)|Codeforces||Codeforces Round #424 (Div. 2, rated, based on VK Cup Finals)|1|\n|<ul><li>- [ ] Done</li></ul>|96|[Crossword solving](http://codeforces.com/problemset/problem/822/B)|Codeforces||Codeforces Round #422 (Div. 2)|1|\n|<ul><li>- [ ] Done</li></ul>|97|[The Eternal Immortality](http://codeforces.com/problemset/problem/869/B)|Codeforces||Codeforces Round #439 (Div. 2)|1|\n|<ul><li>- [ ] Done</li></ul>|98|[Hamster Farm](http://codeforces.com/problemset/problem/939/B)|Codeforces||Codeforces Round #464 (Div. 2)|1|\n|<ul><li>- [ ] Done</li></ul>|99|[Towers](http://codeforces.com/problemset/problem/37/A)|Codeforces||Codeforces Beta Round #37|1|\n|<ul><li>- [ ] Done</li></ul>|100|[Registration System](http://codeforces.com/problemset/problem/4/C)|Codeforces||Codeforces Beta Round #4 (Div. 2 Only)|1|\n|<ul><li>- [ ] Done</li></ul>|101|[Jzzhu and Children](http://codeforces.com/problemset/problem/450/A)|Codeforces||Codeforces Round #257 (Div. 2)|1|\n|<ul><li>- [ ] Done</li></ul>|102|[Cards](http://codeforces.com/problemset/problem/701/A)|Codeforces||Codeforces Round #364 (Div. 2)|1|\n|<ul><li>- [ ] Done</li></ul>|103|[Coins](http://codeforces.com/problemset/problem/58/B)|Codeforces||Codeforces Beta Round #54 (Div. 2)|2|\n|<ul><li>- [ ] Done</li></ul>|104|[Petya and Countryside](http://codeforces.com/problemset/problem/66/B)|Codeforces||Codeforces Beta Round #61 (Div. 2)|2|\n|<ul><li>- [ ] Done</li></ul>|105|[Lucky Numbers (easy)](http://codeforces.com/problemset/problem/96/B)|Codeforces||Codeforces Beta Round #77 (Div. 2 Only)|2|\n|<ul><li>- [ ] Done</li></ul>|106|[Sum of Digits](http://codeforces.com/problemset/problem/102/B)|Codeforces||Codeforces Beta Round #79 (Div. 2 Only)|2|\n|<ul><li>- [ ] Done</li></ul>|107|[Little Pigs and Wolves](http://codeforces.com/problemset/problem/116/B)|Codeforces||Codeforces Beta Round #87 (Div. 2 Only)|2|\n|<ul><li>- [ ] Done</li></ul>|108|[Lucky Substring](http://codeforces.com/problemset/problem/122/B)|Codeforces||Codeforces Beta Round #91 (Div. 2 Only)|2|\n|<ul><li>- [ ] Done</li></ul>|109|[Opposites Attract](http://codeforces.com/problemset/problem/131/B)|Codeforces||Codeforces Beta Round #95 (Div. 2)|2|\n|<ul><li>- [ ] Done</li></ul>|110|[Permutation](http://codeforces.com/problemset/problem/137/B)|Codeforces||Codeforces Beta Round #98 (Div. 2)|2|\n|<ul><li>- [ ] Done</li></ul>|111|[Combination](http://codeforces.com/problemset/problem/155/B)|Codeforces||Codeforces Round #109 (Div. 2)|2|\n|<ul><li>- [ ] Done</li></ul>|112|[Trace](http://codeforces.com/problemset/problem/157/B)|Codeforces||Codeforces Round #110 (Div. 2)|2|\n|<ul><li>- [ ] Done</li></ul>|113|[Unlucky Ticket](http://codeforces.com/problemset/problem/160/B)|Codeforces||Codeforces Round #111 (Div. 2)|2|\n|<ul><li>- [ ] Done</li></ul>|114|[Burning Midnight Oil](http://codeforces.com/problemset/problem/165/B)|Codeforces||Codeforces Round #112 (Div. 2)|2|\n|<ul><li>- [ ] Done</li></ul>|115|[Airport](http://codeforces.com/problemset/problem/218/B)|Codeforces||Codeforces Round #134 (Div. 2)|2|\n|<ul><li>- [ ] Done</li></ul>|116|[Effective Approach](http://codeforces.com/problemset/problem/227/B)|Codeforces||Codeforces Round #140 (Div. 2)|2|\n|<ul><li>- [ ] Done</li></ul>|117|[Big Segment](http://codeforces.com/problemset/problem/242/B)|Codeforces||Codeforces Round #149 (Div. 2)|2|\n|<ul><li>- [ ] Done</li></ul>|118|[Increase and Decrease](http://codeforces.com/problemset/problem/246/B)|Codeforces||Codeforces Round #151 (Div. 2)|2|\n|<ul><li>- [ ] Done</li></ul>|119|[Little Elephant and Magic Square](http://codeforces.com/problemset/problem/259/B)|Codeforces||Codeforces Round #157 (Div. 2)|2|\n|<ul><li>- [ ] Done</li></ul>|120|[Squares](http://codeforces.com/problemset/problem/263/B)|Codeforces||Codeforces Round #161 (Div. 2)|2|\n|<ul><li>- [ ] Done</li></ul>|121|[Prime Matrix](http://codeforces.com/problemset/problem/271/B)|Codeforces||Codeforces Round #166 (Div. 2)|2|\n|<ul><li>- [ ] Done</li></ul>|122|[Painting Eggs](http://codeforces.com/problemset/problem/282/B)|Codeforces||Codeforces Round #173 (Div. 2)|2|\n|<ul><li>- [ ] Done</li></ul>|123|[Find Marble](http://codeforces.com/problemset/problem/285/B)|Codeforces||Codeforces Round #175 (Div. 2)|2|\n|<ul><li>- [ ] Done</li></ul>|124|[Polo the Penguin and Matrix](http://codeforces.com/problemset/problem/289/B)|Codeforces||Codeforces Round #177 (Div. 2)|2|\n|<ul><li>- [ ] Done</li></ul>|125|[Sail](http://codeforces.com/problemset/problem/298/B)|Codeforces||Codeforces Round #180 (Div. 2)|2|\n|<ul><li>- [ ] Done</li></ul>|126|[Archer](http://codeforces.com/problemset/problem/312/B)|Codeforces||Codeforces Round #185 (Div. 2)|2|\n|<ul><li>- [ ] Done</li></ul>|127|[Strings of Power](http://codeforces.com/problemset/problem/318/B)|Codeforces||Codeforces Round #188 (Div. 2)|2|\n|<ul><li>- [ ] Done</li></ul>|128|[Ciel and Flowers](http://codeforces.com/problemset/problem/322/B)|Codeforces||Codeforces Round #190 (Div. 2)|2|\n|<ul><li>- [ ] Done</li></ul>|129|[Simple Molecules](http://codeforces.com/problemset/problem/344/B)|Codeforces||Codeforces Round #200 (Div. 2)|2|\n|<ul><li>- [ ] Done</li></ul>|130|[Fixed Points](http://codeforces.com/problemset/problem/347/B)|Codeforces||Codeforces Round #201 (Div. 2)|2|\n|<ul><li>- [ ] Done</li></ul>|131|[Color the Fence](http://codeforces.com/problemset/problem/349/B)|Codeforces||Codeforces Round #202 (Div. 2)|2|\n|<ul><li>- [ ] Done</li></ul>|132|[Jeff and Periods](http://codeforces.com/problemset/problem/352/B)|Codeforces||Codeforces Round #204 (Div. 2)|2|\n|<ul><li>- [ ] Done</li></ul>|133|[Petya and Staircases](http://codeforces.com/problemset/problem/362/B)|Codeforces||Codeforces Round #212 (Div. 2)|2|\n|<ul><li>- [ ] Done</li></ul>|134|[The Fibonacci Segment](http://codeforces.com/problemset/problem/365/B)|Codeforces||Codeforces Round #213 (Div. 2)|2|\n|<ul><li>- [ ] Done</li></ul>|135|[Bear and Strings](http://codeforces.com/problemset/problem/385/B)|Codeforces||Codeforces Round #226 (Div. 2)|2|\n|<ul><li>- [ ] Done</li></ul>|136|[George and Round](http://codeforces.com/problemset/problem/387/B)|Codeforces||Codeforces Round #227 (Div. 2)|2|\n|<ul><li>- [ ] Done</li></ul>|137|[Fox and Cross](http://codeforces.com/problemset/problem/389/B)|Codeforces||Codeforces Round #228 (Div. 2)|2|\n|<ul><li>- [ ] Done</li></ul>|138|[Football Kit](http://codeforces.com/problemset/problem/432/B)|Codeforces||Codeforces Round #246 (Div. 2)|2|\n|<ul><li>- [ ] Done</li></ul>|139|[Shower Line](http://codeforces.com/problemset/problem/431/B)|Codeforces||Codeforces Round #247 (Div. 2)|2|\n|<ul><li>- [ ] Done</li></ul>|140|[DZY Loves Chemistry](http://codeforces.com/problemset/problem/445/B)|Codeforces||Codeforces Round #254 (Div. 2)|2|\n|<ul><li>- [ ] Done</li></ul>|141|[Little Dima and Equation](http://codeforces.com/problemset/problem/460/B)|Codeforces||Codeforces Round #262 (Div. 2)|2|\n|<ul><li>- [ ] Done</li></ul>|142|[Appleman and Card Game](http://codeforces.com/problemset/problem/462/B)|Codeforces||Codeforces Round #263 (Div. 2)|2|\n|<ul><li>- [ ] Done</li></ul>|143|[Chat Online](http://codeforces.com/problemset/problem/469/B)|Codeforces||Codeforces Round #268 (Div. 2)|2|\n|<ul><li>- [ ] Done</li></ul>|144|[MUH and Important Things](http://codeforces.com/problemset/problem/471/B)|Codeforces||Codeforces Round #269 (Div. 2)|2|\n|<ul><li>- [ ] Done</li></ul>|145|[Design Tutorial: Learn from Life](http://codeforces.com/problemset/problem/472/B)|Codeforces||Codeforces Round #270|2|\n|<ul><li>- [ ] Done</li></ul>|146|[Towers](http://codeforces.com/problemset/problem/479/B)|Codeforces||Codeforces Round #274 (Div. 2)|2|\n|<ul><li>- [ ] Done</li></ul>|147|[Valuable Resources](http://codeforces.com/problemset/problem/485/B)|Codeforces||Codeforces Round #276 (Div. 2)|2|\n|<ul><li>- [ ] Done</li></ul>|148|[Vasya and Wrestling](http://codeforces.com/problemset/problem/493/B)|Codeforces||Codeforces Round #281 (Div. 2)|2|\n|<ul><li>- [ ] Done</li></ul>|149|[Mr. Kitayuta's Colorful Graph](http://codeforces.com/problemset/problem/506/D)|Codeforces||Codeforces Round #286 (Div. 1) & Codeforces Round #286 (Div. 2) & Codeforces Round #286 (Div. 1) & Codeforces Round #286 (Div. 2)|2|\n|<ul><li>- [ ] Done</li></ul>|150|[Painting Pebbles](http://codeforces.com/problemset/problem/509/B)|Codeforces||Codeforces Round #289 (Div. 2, ACM ICPC Rules)|2|\n|<ul><li>- [ ] Done</li></ul>|151|[Fox And Two Dots](http://codeforces.com/problemset/problem/510/B)|Codeforces||Codeforces Round #290 (Div. 2)|2|\n|<ul><li>- [ ] Done</li></ul>|152|[Drazil and His Happy Friends](http://codeforces.com/problemset/problem/515/B)|Codeforces||Codeforces Round #292 (Div. 1) & Codeforces Round #292 (Div. 2) & Codeforces Round #292 (Div. 1) & Codeforces Round #292 (Div. 2)|2|\n|<ul><li>- [ ] Done</li></ul>|153|[Tanya and Postcard](http://codeforces.com/problemset/problem/518/B)|Codeforces||Codeforces Round #293 (Div. 2)|2|\n|<ul><li>- [ ] Done</li></ul>|154|[Pasha and String](http://codeforces.com/problemset/problem/525/B)|Codeforces||Codeforces Round #297 (Div. 2)|2|\n|<ul><li>- [ ] Done</li></ul>|155|[Covered Path](http://codeforces.com/problemset/problem/534/B)|Codeforces||Codeforces Round #298 (Div. 2)|2|\n|<ul><li>- [ ] Done</li></ul>|156|[Sea and Islands](http://codeforces.com/problemset/problem/544/B)|Codeforces||Codeforces Round #302 (Div. 2)|2|\n|<ul><li>- [ ] Done</li></ul>|157|[Mike and Fun](http://codeforces.com/problemset/problem/548/B)|Codeforces||Codeforces Round #305 (Div. 2)|2|\n|<ul><li>- [ ] Done</li></ul>|158|[Ohana Cleans Up](http://codeforces.com/problemset/problem/554/B)|Codeforces||Codeforces Round #309 (Div. 2)|2|\n|<ul><li>- [ ] Done</li></ul>|159|[Case of Fake Numbers](http://codeforces.com/problemset/problem/556/B)|Codeforces||Codeforces Round #310 (Div. 2)|2|\n|<ul><li>- [ ] Done</li></ul>|160|[Pasha and Tea](http://codeforces.com/problemset/problem/557/B)|Codeforces||Codeforces Round #311 (Div. 2)|2|\n|<ul><li>- [ ] Done</li></ul>|161|[Amr and The Large Array](http://codeforces.com/problemset/problem/558/B)|Codeforces||Codeforces Round #312 (Div. 2)|2|\n|<ul><li>- [ ] Done</li></ul>|162|[Gerald is into Art](http://codeforces.com/problemset/problem/560/B)|Codeforces||Codeforces Round #313 (Div. 2)|2|\n|<ul><li>- [ ] Done</li></ul>|163|[Inventory](http://codeforces.com/problemset/problem/569/B)|Codeforces||Codeforces Round #315 (Div. 2)|2|\n|<ul><li>- [ ] Done</li></ul>|164|[Bear and Three Musketeers](http://codeforces.com/problemset/problem/574/B)|Codeforces||Codeforces Round #318 [RussianCodeCup Thanks-Round] (Div. 2)|2|\n|<ul><li>- [ ] Done</li></ul>|165|[Modulo Sum](http://codeforces.com/problemset/problem/577/B)|Codeforces||Codeforces Round #319 (Div. 2)|2|\n|<ul><li>- [ ] Done</li></ul>|166|[Kolya and Tanya ](http://codeforces.com/problemset/problem/584/B)|Codeforces||Codeforces Round #324 (Div. 2)|2|\n|<ul><li>- [ ] Done</li></ul>|167|[Laurenty and Shop](http://codeforces.com/problemset/problem/586/B)|Codeforces||Codeforces Round #325 (Div. 2)|2|\n|<ul><li>- [ ] Done</li></ul>|168|[Rebranding](http://codeforces.com/problemset/problem/591/B)|Codeforces||Codeforces Round #327 (Div. 2)|2|\n|<ul><li>- [ ] Done</li></ul>|169|[Approximating a Constant Range](http://codeforces.com/problemset/problem/602/B)|Codeforces||Codeforces Round #333 (Div. 2)|2|\n|<ul><li>- [ ] Done</li></ul>|170|[More Cowbell](http://codeforces.com/problemset/problem/604/B)|Codeforces||Codeforces Round #334 (Div. 2)|2|\n|<ul><li>- [ ] Done</li></ul>|171|[Vika and Squares](http://codeforces.com/problemset/problem/610/B)|Codeforces||Codeforces Round #337 (Div. 2)|2|\n|<ul><li>- [ ] Done</li></ul>|172|[Gena's Code](http://codeforces.com/problemset/problem/614/B)|Codeforces||Codeforces Round #339 (Div. 2)|2|\n|<ul><li>- [ ] Done</li></ul>|173|[War of the Corporations](http://codeforces.com/problemset/problem/625/B)|Codeforces||Codeforces Round #342 (Div. 2)|2|\n|<ul><li>- [ ] Done</li></ul>|174|[Far Relative’s Problem](http://codeforces.com/problemset/problem/629/B)|Codeforces||Codeforces Round #343 (Div. 2)|2|\n|<ul><li>- [ ] Done</li></ul>|175|[Print Check](http://codeforces.com/problemset/problem/631/B)|Codeforces||Codeforces Round #344 (Div. 2)|2|\n|<ul><li>- [ ] Done</li></ul>|176|[Qualifying Contest](http://codeforces.com/problemset/problem/659/B)|Codeforces||Codeforces Round #346 (Div. 2)|2|\n|<ul><li>- [ ] Done</li></ul>|177|[Little Artem and Grasshopper](http://codeforces.com/problemset/problem/641/A)|Codeforces||VK Cup 2016 - Round 2|2|\n|<ul><li>- [ ] Done</li></ul>|178|[Restoring Painting](http://codeforces.com/problemset/problem/675/B)|Codeforces||Codeforces Round #353 (Div. 2)|2|\n|<ul><li>- [ ] Done</li></ul>|179|[Vanya and Food Processor](http://codeforces.com/problemset/problem/677/B)|Codeforces||Codeforces Round #355 (Div. 2)|2|\n|<ul><li>- [ ] Done</li></ul>|180|[Economy Game](http://codeforces.com/problemset/problem/681/B)|Codeforces||Codeforces Round #357 (Div. 2)|2|\n|<ul><li>- [ ] Done</li></ul>|181|[Little Robber Girl's Zoo](http://codeforces.com/problemset/problem/686/B)|Codeforces||Codeforces Round #359 (Div. 2)|2|\n|<ul><li>- [ ] Done</li></ul>|182|[Barnicle](http://codeforces.com/problemset/problem/697/B)|Codeforces||Codeforces Round #362 (Div. 2)|2|\n|<ul><li>- [ ] Done</li></ul>|183|[One Bomb](http://codeforces.com/problemset/problem/699/B)|Codeforces||Codeforces Round #363 (Div. 2)|2|\n|<ul><li>- [ ] Done</li></ul>|184|[Mishka and trip](http://codeforces.com/problemset/problem/703/B)|Codeforces||Codeforces Round #365 (Div. 2)|2|\n|<ul><li>- [ ] Done</li></ul>|185|[Anatoly and Cockroaches](http://codeforces.com/problemset/problem/719/B)|Codeforces||Codeforces Round #373 (Div. 2)|2|\n|<ul><li>- [ ] Done</li></ul>|186|[Coupons and Discounts](http://codeforces.com/problemset/problem/731/B)|Codeforces||Codeforces Round #376 (Div. 2)|2|\n|<ul><li>- [ ] Done</li></ul>|187|[Divisibility](http://codeforces.com/problemset/problem/630/J)|Codeforces||Experimental Educational Round: VolBIT Formulas Blitz|2|\n|<ul><li>- [ ] Done</li></ul>|188|[Alyona and flowers](http://codeforces.com/problemset/problem/740/B)|Codeforces||Codeforces Round #381 (Div. 2)|2|\n|<ul><li>- [ ] Done</li></ul>|189|[Urbanization](http://codeforces.com/problemset/problem/735/B)|Codeforces||Codeforces Round #382 (Div. 2)|2|\n|<ul><li>- [ ] Done</li></ul>|190|[Arpa’s obvious problem and Mehrdad’s terrible solution](http://codeforces.com/problemset/problem/742/B)|Codeforces||Codeforces Round #383 (Div. 2)|2|\n|<ul><li>- [ ] Done</li></ul>|191|[Parallelogram is Back](http://codeforces.com/problemset/problem/749/B)|Codeforces||Codeforces Round #388 (Div. 2)|2|\n|<ul><li>- [ ] Done</li></ul>|192|[Mammoth's Genome Decoding](http://codeforces.com/problemset/problem/747/B)|Codeforces||Codeforces Round #387 (Div. 2)|2|\n|<ul><li>- [ ] Done</li></ul>|193|[Bash's Big Day](http://codeforces.com/problemset/problem/757/B)|Codeforces||Codecraft-17 and Codeforces Round #391 (Div. 1 + Div. 2, combined)|2|\n|<ul><li>- [ ] Done</li></ul>|194|[Ilya and tic-tac-toe game](http://codeforces.com/problemset/problem/754/B)|Codeforces||Codeforces Round #390 (Div. 2)|2|\n|<ul><li>- [ ] Done</li></ul>|195|[Dasha and friends](http://codeforces.com/problemset/problem/761/B)|Codeforces||Codeforces Round #394 (Div. 2)|2|\n|<ul><li>- [ ] Done</li></ul>|196|[Code obfuscation](http://codeforces.com/problemset/problem/765/B)|Codeforces||Codeforces Round #397 by Kaspersky Lab and Barcelona Bootcamp (Div. 1 + Div. 2 combined)|2|\n|<ul><li>- [ ] Done</li></ul>|197|[Game of Credit Cards](http://codeforces.com/problemset/problem/777/B)|Codeforces||Codeforces Round #401 (Div. 2)|2|\n|<ul><li>- [ ] Done</li></ul>|198|[Bear and Friendship Condition](http://codeforces.com/problemset/problem/771/A)|Codeforces||VK Cup 2017 - Round 1|2|\n|<ul><li>- [ ] Done</li></ul>|199|[Not Afraid](http://codeforces.com/problemset/problem/787/B)|Codeforces||Codeforces Round #406 (Div. 2)|2|\n|<ul><li>- [ ] Done</li></ul>|200|[Find The Bone](http://codeforces.com/problemset/problem/796/B)|Codeforces||Codeforces Round #408 (Div. 2)|2|\n|<ul><li>- [ ] Done</li></ul>|201|[Vladik and Complicated Book](http://codeforces.com/problemset/problem/811/B)|Codeforces||Codeforces Round #416 (Div. 2)|2|\n|<ul><li>- [ ] Done</li></ul>|202|[Summer sell-off](http://codeforces.com/problemset/problem/810/B)|Codeforces||Codeforces Round #415 (Div. 2)|2|\n|<ul><li>- [ ] Done</li></ul>|203|[Mike and strings](http://codeforces.com/problemset/problem/798/B)|Codeforces||Codeforces Round #410 (Div. 2)|2|\n|<ul><li>- [ ] Done</li></ul>|204|[Valued Keys](http://codeforces.com/problemset/problem/801/B)|Codeforces||Codeforces Round #409 (rated, Div. 2, based on VK Cup 2017 Round 2)|2|\n|<ul><li>- [ ] Done</li></ul>|205|[Karen and Coffee](http://codeforces.com/problemset/problem/816/B)|Codeforces||Codeforces Round #419 (Div. 2)|2|\n|<ul><li>- [ ] Done</li></ul>|206|[The Festive Evening](http://codeforces.com/problemset/problem/834/B)|Codeforces||Codeforces Round #426 (Div. 2)|2|\n|<ul><li>- [ ] Done</li></ul>|207|[Okabe and Banana Trees](http://codeforces.com/problemset/problem/821/B)|Codeforces||Codeforces Round #420 (Div. 2)|2|\n|<ul><li>- [ ] Done</li></ul>|208|[An express train to reveries](http://codeforces.com/problemset/problem/814/B)|Codeforces||Codeforces Round #418 (Div. 2)|2|\n|<ul><li>- [ ] Done</li></ul>|209|[Polycarp and Letters](http://codeforces.com/problemset/problem/864/B)|Codeforces||Codeforces Round #436 (Div. 2)|2|\n|<ul><li>- [ ] Done</li></ul>|210|[Divisiblity of Differences](http://codeforces.com/problemset/problem/876/B)|Codeforces||Codeforces Round #441 (Div. 2, by Moscow Team Olympiad)|2|\n|<ul><li>- [ ] Done</li></ul>|211|[Maximum of Maximums of Minimums](http://codeforces.com/problemset/problem/870/B)|Codeforces||Technocup 2018 - Elimination Round 2|2|\n|<ul><li>- [ ] Done</li></ul>|212|[Beautiful Divisors](http://codeforces.com/problemset/problem/893/B)|Codeforces||Educational Codeforces Round 33 (Rated for Div. 2)|2|\n|<ul><li>- [ ] Done</li></ul>|213|[Proper Nutrition](http://codeforces.com/problemset/problem/898/B)|Codeforces||Codeforces Round #451 (Div. 2)|2|\n|<ul><li>- [ ] Done</li></ul>|214|[Magic Forest](http://codeforces.com/problemset/problem/922/B)|Codeforces||Codeforces Round #461 (Div. 2)|2|\n|<ul><li>- [ ] Done</li></ul>|215|[Repeated Substitution with Sed](https://icpcarchive.ecs.baylor.edu/index.php?option=onlinejudge&page=show_problem&problem=2638)|Live Archive|2009|Asia - Tokyo|2|\n|<ul><li>- [ ] Done</li></ul>|216|[The least round way](http://codeforces.com/problemset/problem/2/B)|Codeforces||Codeforces Beta Round #2|3|\n|<ul><li>- [ ] Done</li></ul>|217|[President's Office](http://codeforces.com/problemset/problem/6/B)|Codeforces||Codeforces Beta Round #6 (Div. 2 Only)|3|\n|<ul><li>- [ ] Done</li></ul>|218|[Correct Solution?](http://codeforces.com/problemset/problem/12/B)|Codeforces||Codeforces Beta Round #12 (Div 2 Only)|3|\n|<ul><li>- [ ] Done</li></ul>|219|[Burglar and Matches](http://codeforces.com/problemset/problem/16/B)|Codeforces||Codeforces Beta Round #16 (Div. 2 Only)|3|\n|<ul><li>- [ ] Done</li></ul>|220|[Phone numbers](http://codeforces.com/problemset/problem/25/B)|Codeforces||Codeforces Beta Round #25 (Div. 2 Only)|3|\n|<ul><li>- [ ] Done</li></ul>|221|[Regular Bracket Sequence](http://codeforces.com/problemset/problem/26/B)|Codeforces||Codeforces Beta Round #26 (Codeforces format)|3|\n|<ul><li>- [ ] Done</li></ul>|222|[Letter](http://codeforces.com/problemset/problem/43/B)|Codeforces||Codeforces Beta Round #42 (Div. 2)|3|\n|<ul><li>- [ ] Done</li></ul>|223|[Easter Eggs](http://codeforces.com/problemset/problem/78/B)|Codeforces||Codeforces Beta Round #70 (Div. 2)|3|\n|<ul><li>- [ ] Done</li></ul>|224|[Testing Pants for Sadness](http://codeforces.com/problemset/problem/103/A)|Codeforces||Codeforces Beta Round #80 (Div. 1 Only) & Codeforces Beta Round #80 (Div. 2 Only)|3|\n|<ul><li>- [ ] Done</li></ul>|225|[Lucky String](http://codeforces.com/problemset/problem/110/B)|Codeforces||Codeforces Beta Round #84 (Div. 2 Only)|3|\n|<ul><li>- [ ] Done</li></ul>|226|[Canvas Frames](http://codeforces.com/problemset/problem/127/B)|Codeforces||Codeforces Beta Round #93 (Div. 2 Only)|3|\n|<ul><li>- [ ] Done</li></ul>|227|[Students and Shoelaces](http://codeforces.com/problemset/problem/129/B)|Codeforces||Codeforces Beta Round #94 (Div. 2 Only)|3|\n|<ul><li>- [ ] Done</li></ul>|228|[Unary](http://codeforces.com/problemset/problem/133/B)|Codeforces||Codeforces Beta Round #96 (Div. 2)|3|\n|<ul><li>- [ ] Done</li></ul>|229|[Ternary Logic](http://codeforces.com/problemset/problem/136/B)|Codeforces||Codeforces Beta Round #97 (Div. 2)|3|\n|<ul><li>- [ ] Done</li></ul>|230|[Phone Numbers](http://codeforces.com/problemset/problem/151/B)|Codeforces||Codeforces Round #107 (Div. 2)|3|\n|<ul><li>- [ ] Done</li></ul>|231|[Vasya's Calendar](http://codeforces.com/problemset/problem/182/B)|Codeforces||Codeforces Round #117 (Div. 2)|3|\n|<ul><li>- [ ] Done</li></ul>|232|[Little Elephant and Numbers](http://codeforces.com/problemset/problem/221/B)|Codeforces||Codeforces Round #136 (Div. 2)|3|\n|<ul><li>- [ ] Done</li></ul>|233|[Cosmic Tables](http://codeforces.com/problemset/problem/222/B)|Codeforces||Codeforces Round #137 (Div. 2)|3|\n|<ul><li>- [ ] Done</li></ul>|234|[Array](http://codeforces.com/problemset/problem/224/B)|Codeforces||Codeforces Round #138 (Div. 2)|3|\n|<ul><li>- [ ] Done</li></ul>|235|[Non-square Equation](http://codeforces.com/problemset/problem/233/B)|Codeforces||Codeforces Round #144 (Div. 2)|3|\n|<ul><li>- [ ] Done</li></ul>|236|[Reading](http://codeforces.com/problemset/problem/234/B)|Codeforces||Codeforces Round #145 (Div. 2, ACM-ICPC Rules)|3|\n|<ul><li>- [ ] Done</li></ul>|237|[Easy Number Challenge](http://codeforces.com/problemset/problem/236/B)|Codeforces||Codeforces Round #146 (Div. 2)|3|\n|<ul><li>- [ ] Done</li></ul>|238|[Physics Practical](http://codeforces.com/problemset/problem/253/B)|Codeforces||Codeforces Round #154 (Div. 2)|3|\n|<ul><li>- [ ] Done</li></ul>|239|[Code Parsing](http://codeforces.com/problemset/problem/255/B)|Codeforces||Codeforces Round #156 (Div. 2)|3|\n|<ul><li>- [ ] Done</li></ul>|240|[Playing Cubes](http://codeforces.com/problemset/problem/257/B)|Codeforces||Codeforces Round #159 (Div. 2)|3|\n|<ul><li>- [ ] Done</li></ul>|241|[Roma and Changing Signs](http://codeforces.com/problemset/problem/262/B)|Codeforces||Codeforces Round #160 (Div. 2)|3|\n|<ul><li>- [ ] Done</li></ul>|242|[Multithreading](http://codeforces.com/problemset/problem/270/B)|Codeforces||Codeforces Round #165 (Div. 2)|3|\n|<ul><li>- [ ] Done</li></ul>|243|[Cows and Poker Game](http://codeforces.com/problemset/problem/284/B)|Codeforces||Codeforces Round #174 (Div. 2)|3|\n|<ul><li>- [ ] Done</li></ul>|244|[Coach](http://codeforces.com/problemset/problem/300/B)|Codeforces||Codeforces Round #181 (Div. 2)|3|\n|<ul><li>- [ ] Done</li></ul>|245|[Eugeny and Play List](http://codeforces.com/problemset/problem/302/B)|Codeforces||Codeforces Round #182 (Div. 2)|3|\n|<ul><li>- [ ] Done</li></ul>|246|[Sereja and Array](http://codeforces.com/problemset/problem/315/B)|Codeforces||Codeforces Round #187 (Div. 2)|3|\n|<ul><li>- [ ] Done</li></ul>|247|[Ping-Pong (Easy Version)](http://codeforces.com/problemset/problem/320/B)|Codeforces||Codeforces Round #189 (Div. 2)|3|\n|<ul><li>- [ ] Done</li></ul>|248|[Maximum Absurdity](http://codeforces.com/problemset/problem/332/B)|Codeforces||Codeforces Round #193 (Div. 2)|3|\n|<ul><li>- [ ] Done</li></ul>|249|[Routine Problem](http://codeforces.com/problemset/problem/337/B)|Codeforces||Codeforces Round #196 (Div. 2)|3|\n|<ul><li>- [ ] Done</li></ul>|250|[Vasya and Public Transport](http://codeforces.com/problemset/problem/355/B)|Codeforces||Codeforces Round #206 (Div. 2)|3|\n|<ul><li>- [ ] Done</li></ul>|251|[Flag Day](http://codeforces.com/problemset/problem/357/B)|Codeforces||Codeforces Round #207 (Div. 2)|3|\n|<ul><li>- [ ] Done</li></ul>|252|[Permutation](http://codeforces.com/problemset/problem/359/B)|Codeforces||Codeforces Round #209 (Div. 2)|3|\n|<ul><li>- [ ] Done</li></ul>|253|[Levko and Permutation](http://codeforces.com/problemset/problem/361/B)|Codeforces||Codeforces Round #210 (Div. 2)|3|\n|<ul><li>- [ ] Done</li></ul>|254|[Dima and To-do List](http://codeforces.com/problemset/problem/366/B)|Codeforces||Codeforces Round #214 (Div. 2)|3|\n|<ul><li>- [ ] Done</li></ul>|255|[Valera and Contest](http://codeforces.com/problemset/problem/369/B)|Codeforces||Codeforces Round #216 (Div. 2)|3|\n|<ul><li>- [ ] Done</li></ul>|256|[Fox Dividing Cheese](http://codeforces.com/problemset/problem/371/B)|Codeforces||Codeforces Round #218 (Div. 2)|3|\n|<ul><li>- [ ] Done</li></ul>|257|[Sereja and Stairs](http://codeforces.com/problemset/problem/381/B)|Codeforces||Codeforces Round #223 (Div. 2)|3|\n|<ul><li>- [ ] Done</li></ul>|258|[Inna and New Matrix of Candies](http://codeforces.com/problemset/problem/400/B)|Codeforces||Codeforces Round #234 (Div. 2)|3|\n|<ul><li>- [ ] Done</li></ul>|259|[Sereja and Contests](http://codeforces.com/problemset/problem/401/B)|Codeforces||Codeforces Round #235 (Div. 2)|3|\n|<ul><li>- [ ] Done</li></ul>|260|[Domino Effect](http://codeforces.com/problemset/problem/405/B)|Codeforces||Codeforces Round #238 (Div. 2)|3|\n|<ul><li>- [ ] Done</li></ul>|261|[Garland](http://codeforces.com/problemset/problem/408/B)|Codeforces||Codeforces Round #239 (Div. 2)|3|\n|<ul><li>- [ ] Done</li></ul>|262|[Mashmokh and Tokens](http://codeforces.com/problemset/problem/415/B)|Codeforces||Codeforces Round #240 (Div. 2)|3|\n|<ul><li>- [ ] Done</li></ul>|263|[Art Union](http://codeforces.com/problemset/problem/416/B)|Codeforces||Codeforces Round #241 (Div. 2)|3|\n|<ul><li>- [ ] Done</li></ul>|264|[Megacity](http://codeforces.com/problemset/problem/424/B)|Codeforces||Codeforces Round #242 (Div. 2)|3|\n|<ul><li>- [ ] Done</li></ul>|265|[Pasha Maximizes](http://codeforces.com/problemset/problem/435/B)|Codeforces||Codeforces Round #249 (Div. 2)|3|\n|<ul><li>- [ ] Done</li></ul>|266|[The Child and Set](http://codeforces.com/problemset/problem/437/B)|Codeforces||Codeforces Round #250 (Div. 2)|3|\n|<ul><li>- [ ] Done</li></ul>|267|[Valera and Fruits](http://codeforces.com/problemset/problem/441/B)|Codeforces||Codeforces Round #252 (Div. 2)|3|\n|<ul><li>- [ ] Done</li></ul>|268|[Queue](http://codeforces.com/problemset/problem/490/B)|Codeforces||Codeforces Round #279 (Div. 2)|3|\n|<ul><li>- [ ] Done</li></ul>|269|[Modular Equations](http://codeforces.com/problemset/problem/495/B)|Codeforces||Codeforces Round #282 (Div. 2)|3|\n|<ul><li>- [ ] Done</li></ul>|270|[Secret Combination](http://codeforces.com/problemset/problem/496/B)|Codeforces||Codeforces Round #283 (Div. 2)|3|\n|<ul><li>- [ ] Done</li></ul>|271|[Error Correct System](http://codeforces.com/problemset/problem/527/B)|Codeforces||Codeforces Round #296 (Div. 2)|3|\n|<ul><li>- [ ] Done</li></ul>|272|[School Marks](http://codeforces.com/problemset/problem/540/B)|Codeforces||Codeforces Round #301 (Div. 2)|3|\n|<ul><li>- [ ] Done</li></ul>|273|[Order Book](http://codeforces.com/problemset/problem/572/B)|Codeforces||Codeforces Round #317 [AimFund Thanks-Round] (Div. 2)|3|\n|<ul><li>- [ ] Done</li></ul>|274|[Finding Team Member](http://codeforces.com/problemset/problem/579/B)|Codeforces||Codeforces Round #320 (Div. 2) [Bayan Thanks-Round]|3|\n|<ul><li>- [ ] Done</li></ul>|275|[Anton and Lines](http://codeforces.com/problemset/problem/593/B)|Codeforces||Codeforces Round #329 (Div. 2)|3|\n|<ul><li>- [ ] Done</li></ul>|276|[Spongebob and Joke](http://codeforces.com/problemset/problem/599/B)|Codeforces||Codeforces Round #332 (Div. 2)|3|\n|<ul><li>- [ ] Done</li></ul>|277|[Hamming Distance Sum](http://codeforces.com/problemset/problem/608/B)|Codeforces||Codeforces Round #336 (Div. 2)|3|\n|<ul><li>- [ ] Done</li></ul>|278|[Longtail Hedgehog](http://codeforces.com/problemset/problem/615/B)|Codeforces||Codeforces Round #338 (Div. 2)|3|\n|<ul><li>- [ ] Done</li></ul>|279|[Coat of Anticubism](http://codeforces.com/problemset/problem/667/B)|Codeforces||Codeforces Round #349 (Div. 2)|3|\n|<ul><li>- [ ] Done</li></ul>|280|[Pyramid of Glasses](http://codeforces.com/problemset/problem/676/B)|Codeforces||Codeforces Round #354 (Div. 2)|3|\n|<ul><li>- [ ] Done</li></ul>|281|[Mike and Shortcuts](http://codeforces.com/problemset/problem/689/B)|Codeforces||Codeforces Round #361 (Div. 2)|3|\n|<ul><li>- [ ] Done</li></ul>|282|[Spotlights](http://codeforces.com/problemset/problem/729/B)|Codeforces||Technocup 2017 - Elimination Round 2|3|\n|<ul><li>- [ ] Done</li></ul>|283|[Hongcow Solves A Puzzle](http://codeforces.com/problemset/problem/745/B)|Codeforces||Codeforces Round #385 (Div. 2)|3|\n|<ul><li>- [ ] Done</li></ul>|284|[Santa Claus and Keyboard Check](http://codeforces.com/problemset/problem/748/B)|Codeforces||Technocup 2017 - Elimination Round 3|3|\n|<ul><li>- [ ] Done</li></ul>|285|[Frodo and pillows](http://codeforces.com/problemset/problem/760/B)|Codeforces||Codeforces Round #393 (Div. 2) (8VC Venture Cup 2017 - Final Round Div. 2 Edition)|3|\n|<ul><li>- [ ] Done</li></ul>|286|[Code For 1](http://codeforces.com/problemset/problem/768/B)|Codeforces||Divide by Zero 2017 and Codeforces Round #399 (Div. 1 + Div. 2, combined)|3|\n|<ul><li>- [ ] Done</li></ul>|287|[The Meeting Place Cannot Be Changed](http://codeforces.com/problemset/problem/780/B)|Codeforces||?????????? 2017 - ????? (?????? ??? ??????-??????????)|3|\n|<ul><li>- [ ] Done</li></ul>|288|[Masha and geometric depression](http://codeforces.com/problemset/problem/789/B)|Codeforces||Codeforces Round #407 (Div. 2)|3|\n|<ul><li>- [ ] Done</li></ul>|289|[Sagheer, the Hausmeister](http://codeforces.com/problemset/problem/812/B)|Codeforces||Codeforces Round #417 (Div. 2)|3|\n|<ul><li>- [ ] Done</li></ul>|290|[Cutting Carrot](http://codeforces.com/problemset/problem/794/B)|Codeforces||Tinkoff Challenge - Final Round (Codeforces Round #414, rated, Div. 1 + Div. 2)|3|\n|<ul><li>- [ ] Done</li></ul>|291|[T-shirt buying](http://codeforces.com/problemset/problem/799/B)|Codeforces||Playrix Codescapes Cup (Codeforces Round #413, rated, Div. 1 + Div. 2)|3|\n|<ul><li>- [ ] Done</li></ul>|292|[T-Shirt Hunt](http://codeforces.com/problemset/problem/807/B)|Codeforces||Codeforces Round #412 (rated, Div. 2, base on VK Cup 2017 Round 3)|3|\n|<ul><li>- [ ] Done</li></ul>|293|[Petya and Exam](http://codeforces.com/problemset/problem/832/B)|Codeforces||Codeforces Round #425 (Div. 2)|3|\n|<ul><li>- [ ] Done</li></ul>|294|[Luba And The Ticket](http://codeforces.com/problemset/problem/845/B)|Codeforces||Educational Codeforces Round 27|3|\n|<ul><li>- [ ] Done</li></ul>|295|[Black Square](http://codeforces.com/problemset/problem/828/B)|Codeforces||Codeforces Round #423 (Div. 2, rated, based on VK Cup Finals)|3|\n|<ul><li>- [ ] Done</li></ul>|296|[Mister B and Angle in Polygon](http://codeforces.com/problemset/problem/820/B)|Codeforces||Codeforces Round #421 (Div. 2)|3|\n|<ul><li>- [ ] Done</li></ul>|297|[Balanced Substring](http://codeforces.com/problemset/problem/873/B)|Codeforces||Educational Codeforces Round 30|3|\n|<ul><li>- [ ] Done</li></ul>|298|[Lorry](http://codeforces.com/problemset/problem/3/B)|Codeforces||Codeforces Beta Round #3|4|\n|<ul><li>- [ ] Done</li></ul>|299|[Center Alignment](http://codeforces.com/problemset/problem/5/B)|Codeforces||Codeforces Beta Round #5|4|\n|<ul><li>- [ ] Done</li></ul>|300|[Running Student](http://codeforces.com/problemset/problem/9/B)|Codeforces||Codeforces Beta Round #9 (Div. 2 Only)|4|\n|<ul><li>- [ ] Done</li></ul>|301|[Young Photographer](http://codeforces.com/problemset/problem/14/B)|Codeforces||Codeforces Beta Round #14 (Div. 2)|4|\n|<ul><li>- [ ] Done</li></ul>|302|[Tournament](http://codeforces.com/problemset/problem/27/B)|Codeforces||Codeforces Beta Round #27 (Codeforces format, Div. 2)|4|\n|<ul><li>- [ ] Done</li></ul>|303|[Coins](http://codeforces.com/problemset/problem/47/B)|Codeforces||Codeforces Beta Round #44 (Div. 2)|4|\n|<ul><li>- [ ] Done</li></ul>|304|[Choosing Symbol Pairs](http://codeforces.com/problemset/problem/50/B)|Codeforces||Codeforces Beta Round #47|4|\n|<ul><li>- [ ] Done</li></ul>|305|[Fortune Telling](http://codeforces.com/problemset/problem/59/B)|Codeforces||Codeforces Beta Round #55 (Div. 2)|4|\n|<ul><li>- [ ] Done</li></ul>|306|[Serial Time!](http://codeforces.com/problemset/problem/60/B)|Codeforces||Codeforces Beta Round #56|4|\n|<ul><li>- [ ] Done</li></ul>|307|[Hard Work](http://codeforces.com/problemset/problem/61/B)|Codeforces||Codeforces Beta Round #57 (Div. 2)|4|\n|<ul><li>- [ ] Done</li></ul>|308|[Settlers' Training](http://codeforces.com/problemset/problem/63/B)|Codeforces||Codeforces Beta Round #59 (Div. 2)|4|\n|<ul><li>- [ ] Done</li></ul>|309|[Progress Bar](http://codeforces.com/problemset/problem/71/B)|Codeforces||Codeforces Beta Round #65 (Div. 2)|4|\n|<ul><li>- [ ] Done</li></ul>|310|[Depression](http://codeforces.com/problemset/problem/80/B)|Codeforces||Codeforces Beta Round #69 (Div. 2 Only)|4|\n|<ul><li>- [ ] Done</li></ul>|311|[Magical Array](http://codeforces.com/problemset/problem/83/A)|Codeforces||Codeforces Beta Round #72 (Div. 1 Only) & Codeforces Beta Round #72 (Div. 2 Only)|4|\n|<ul><li>- [ ] Done</li></ul>|312|[African Crossword](http://codeforces.com/problemset/problem/90/B)|Codeforces||Codeforces Beta Round #74 (Div. 2 Only)|4|\n|<ul><li>- [ ] Done</li></ul>|313|[Binary Number](http://codeforces.com/problemset/problem/92/B)|Codeforces||Codeforces Beta Round #75 (Div. 2 Only)|4|\n|<ul><li>- [ ] Done</li></ul>|314|[Choosing Laptop](http://codeforces.com/problemset/problem/106/B)|Codeforces||Codeforces Beta Round #82 (Div. 2)|4|\n|<ul><li>- [ ] Done</li></ul>|315|[Petya and Square](http://codeforces.com/problemset/problem/112/B)|Codeforces||Codeforces Beta Round #85 (Div. 2 Only)|4|\n|<ul><li>- [ ] Done</li></ul>|316|[Hopscotch](http://codeforces.com/problemset/problem/141/B)|Codeforces||Codeforces Round #101 (Div. 2)|4|\n|<ul><li>- [ ] Done</li></ul>|317|[Help Kingdom of Far Far Away 2](http://codeforces.com/problemset/problem/143/B)|Codeforces||Codeforces Round #102 (Div. 2)|4|\n|<ul><li>- [ ] Done</li></ul>|318|[Meeting](http://codeforces.com/problemset/problem/144/B)|Codeforces||Codeforces Round #103 (Div. 2)|4|\n|<ul><li>- [ ] Done</li></ul>|319|[Lucky Mask](http://codeforces.com/problemset/problem/146/B)|Codeforces||Codeforces Round #104 (Div. 2)|4|\n|<ul><li>- [ ] Done</li></ul>|320|[Escape](http://codeforces.com/problemset/problem/148/B)|Codeforces||Codeforces Round #105 (Div. 2)|4|\n|<ul><li>- [ ] Done</li></ul>|321|[Steps](http://codeforces.com/problemset/problem/152/B)|Codeforces||Codeforces Round #108 (Div. 2)|4|\n|<ul><li>- [ ] Done</li></ul>|322|[Growing Mushrooms](http://codeforces.com/problemset/problem/186/B)|Codeforces||Codeforces Round #118 (Div. 2)|4|\n|<ul><li>- [ ] Done</li></ul>|323|[Counting Rhombi](http://codeforces.com/problemset/problem/189/B)|Codeforces||Codeforces Round #119 (Div. 2)|4|\n|<ul><li>- [ ] Done</li></ul>|324|[Walking in the Rain](http://codeforces.com/problemset/problem/192/B)|Codeforces||Codeforces Round #121 (Div. 2)|4|\n|<ul><li>- [ ] Done</li></ul>|325|[Square](http://codeforces.com/problemset/problem/194/B)|Codeforces||Codeforces Round #122 (Div. 2)|4|\n|<ul><li>- [ ] Done</li></ul>|326|[After Training](http://codeforces.com/problemset/problem/195/B)|Codeforces||Codeforces Round #123 (Div. 2)|4|\n|<ul><li>- [ ] Done</li></ul>|327|[Limit](http://codeforces.com/problemset/problem/197/B)|Codeforces||Codeforces Round #124 (Div. 2)|4|\n|<ul><li>- [ ] Done</li></ul>|328|[Little Elephant and Sorting](http://codeforces.com/problemset/problem/205/B)|Codeforces||Codeforces Round #129 (Div. 2)|4|\n|<ul><li>- [ ] Done</li></ul>|329|[Hometask](http://codeforces.com/problemset/problem/214/B)|Codeforces||Codeforces Round #131 (Div. 2)|4|\n|<ul><li>- [ ] Done</li></ul>|330|[Olympic Medal](http://codeforces.com/problemset/problem/215/B)|Codeforces||Codeforces Round #132 (Div. 2)|4|\n|<ul><li>- [ ] Done</li></ul>|331|[Forming Teams](http://codeforces.com/problemset/problem/216/B)|Codeforces||Codeforces Round #133 (Div. 2)|4|\n|<ul><li>- [ ] Done</li></ul>|332|[Special Offer! Super Price 999 Bourles!](http://codeforces.com/problemset/problem/219/B)|Codeforces||Codeforces Round #135 (Div. 2)|4|\n|<ul><li>- [ ] Done</li></ul>|333|[Well-known Numbers](http://codeforces.com/problemset/problem/225/B)|Codeforces||Codeforces Round #139 (Div. 2)|4|\n|<ul><li>- [ ] Done</li></ul>|334|[Two Tables](http://codeforces.com/problemset/problem/228/B)|Codeforces||Codeforces Round #141 (Div. 2)|4|\n|<ul><li>- [ ] Done</li></ul>|335|[Magic, Wizardry and Wonders](http://codeforces.com/problemset/problem/231/B)|Codeforces||Codeforces Round #143 (Div. 2)|4|\n|<ul><li>- [ ] Done</li></ul>|336|[Undoubtedly Lucky Numbers](http://codeforces.com/problemset/problem/244/B)|Codeforces||Codeforces Round #150 (Div. 2)|4|\n|<ul><li>- [ ] Done</li></ul>|337|[Chilly Willy](http://codeforces.com/problemset/problem/248/B)|Codeforces||Codeforces Round #152 (Div. 2)|4|\n|<ul><li>- [ ] Done</li></ul>|338|[Ancient Prophesy](http://codeforces.com/problemset/problem/260/B)|Codeforces||Codeforces Round #158 (Div. 2)|4|\n|<ul><li>- [ ] Done</li></ul>|339|[Dima and Sequence](http://codeforces.com/problemset/problem/272/B)|Codeforces||Codeforces Round #167 (Div. 2)|4|\n|<ul><li>- [ ] Done</li></ul>|340|[New Problem](http://codeforces.com/problemset/problem/278/B)|Codeforces||Codeforces Round #170 (Div. 2)|4|\n|<ul><li>- [ ] Done</li></ul>|341|[Pipeline](http://codeforces.com/problemset/problem/287/B)|Codeforces||Codeforces Round #176 (Div. 2)|4|\n|<ul><li>- [ ] Done</li></ul>|342|[Shaass and Bookshelf](http://codeforces.com/problemset/problem/294/B)|Codeforces||Codeforces Round #178 (Div. 2)|4|\n|<ul><li>- [ ] Done</li></ul>|343|[Eight Point Sets](http://codeforces.com/problemset/problem/334/B)|Codeforces||Codeforces Round #194 (Div. 2)|4|\n|<ul><li>- [ ] Done</li></ul>|344|[Xenia and Spies](http://codeforces.com/problemset/problem/342/B)|Codeforces||Codeforces Round #199 (Div. 2)|4|\n|<ul><li>- [ ] Done</li></ul>|345|[Resort](http://codeforces.com/problemset/problem/350/B)|Codeforces||Codeforces Round #203 (Div. 2)|4|\n|<ul><li>- [ ] Done</li></ul>|346|[Dima and Text Messages](http://codeforces.com/problemset/problem/358/B)|Codeforces||Codeforces Round #208 (Div. 2)|4|\n|<ul><li>- [ ] Done</li></ul>|347|[Inna and Nine](http://codeforces.com/problemset/problem/374/B)|Codeforces||Codeforces Round #220 (Div. 2)|4|\n|<ul><li>- [ ] Done</li></ul>|348|[I.O.U.](http://codeforces.com/problemset/problem/376/B)|Codeforces||Codeforces Round #221 (Div. 2)|4|\n|<ul><li>- [ ] Done</li></ul>|349|[Semifinals](http://codeforces.com/problemset/problem/378/B)|Codeforces||Codeforces Round #222 (Div. 2)|4|\n|<ul><li>- [ ] Done</li></ul>|350|[Multitasking](http://codeforces.com/problemset/problem/384/B)|Codeforces||Codeforces Round #225 (Div. 2)|4|\n|<ul><li>- [ ] Done</li></ul>|351|[Trees in a Row](http://codeforces.com/problemset/problem/402/B)|Codeforces||Codeforces Round #236 (Div. 2)|4|\n|<ul><li>- [ ] Done</li></ul>|352|[Marathon](http://codeforces.com/problemset/problem/404/B)|Codeforces||Codeforces Round #237 (Div. 2)|4|\n|<ul><li>- [ ] Done</li></ul>|353|[Sereja and Mirroring](http://codeforces.com/problemset/problem/426/B)|Codeforces||Codeforces Round #243 (Div. 2)|4|\n|<ul><li>- [ ] Done</li></ul>|354|[Balls Game](http://codeforces.com/problemset/problem/430/B)|Codeforces||Codeforces Round #245 (Div. 2)|4|\n|<ul><li>- [ ] Done</li></ul>|355|[Kolya and Tandem Repeat](http://codeforces.com/problemset/problem/443/B)|Codeforces||Codeforces Round #253 (Div. 2)|4|\n|<ul><li>- [ ] Done</li></ul>|356|[Wonder Room](http://codeforces.com/problemset/problem/466/B)|Codeforces||Codeforces Round #266 (Div. 2)|4|\n|<ul><li>- [ ] Done</li></ul>|357|[Friends and Presents](http://codeforces.com/problemset/problem/483/B)|Codeforces||Codeforces Round #275 (Div. 2)|4|\n|<ul><li>- [ ] Done</li></ul>|358|[ZgukistringZ](http://codeforces.com/problemset/problem/551/B)|Codeforces||Codeforces Round #307 (Div. 2)|4|\n|<ul><li>- [ ] Done</li></ul>|359|[Pasha and Phone](http://codeforces.com/problemset/problem/595/B)|Codeforces||Codeforces Round #330 (Div. 2)|4|\n|<ul><li>- [ ] Done</li></ul>|360|[Testing Robots](http://codeforces.com/problemset/problem/606/B)|Codeforces||Codeforces Round #335 (Div. 2)|4|\n|<ul><li>- [ ] Done</li></ul>|361|[Rebus](http://codeforces.com/problemset/problem/663/A)|Codeforces||Codeforces Round #347 (Div. 1) & Codeforces Round #347 (Div. 2)|4|\n|<ul><li>- [ ] Done</li></ul>|362|[Problems for Round](http://codeforces.com/problemset/problem/673/B)|Codeforces||Codeforces Round #351 (VK Cup 2016 Round 3, Div. 2 Edition)|4|\n|<ul><li>- [ ] Done</li></ul>|363|[Game of the Rows](http://codeforces.com/problemset/problem/839/B)|Codeforces||Codeforces Round #428 (Div. 2)|4|\n|<ul><li>- [ ] Done</li></ul>|364|[Race Against Time](http://codeforces.com/problemset/problem/868/B)|Codeforces||Codeforces Round #438 by Sberbank and Barcelona Bootcamp (Div. 1 + Div. 2 combined)|4|\n|<ul><li>- [ ] Done</li></ul>|365|[Binary Search](https://icpcarchive.ecs.baylor.edu/index.php?option=onlinejudge&page=show_problem&problem=221)|Live Archive|2000|Europe - Northeastern|4|\n|<ul><li>- [ ] Done</li></ul>|366|[Memory Manager](http://codeforces.com/problemset/problem/7/B)|Codeforces||Codeforces Beta Round #7|5|\n|<ul><li>- [ ] Done</li></ul>|367|[Obsession with Robots](http://codeforces.com/problemset/problem/8/B)|Codeforces||Codeforces Beta Round #8|5|\n|<ul><li>- [ ] Done</li></ul>|368|[Jumping Jack](http://codeforces.com/problemset/problem/11/B)|Codeforces||Codeforces Beta Round #11|5|\n|<ul><li>- [ ] Done</li></ul>|369|[Hierarchy](http://codeforces.com/problemset/problem/17/B)|Codeforces||Codeforces Beta Round #17|5|\n|<ul><li>- [ ] Done</li></ul>|370|[Checkout Assistant](http://codeforces.com/problemset/problem/19/B)|Codeforces||Codeforces Beta Round #19|5|\n|<ul><li>- [ ] Done</li></ul>|371|[Equation](http://codeforces.com/problemset/problem/20/B)|Codeforces||Codeforces Alpha Round #20 (Codeforces format)|5|\n|<ul><li>- [ ] Done</li></ul>|372|[Bargaining Table](http://codeforces.com/problemset/problem/22/B)|Codeforces||Codeforces Beta Round #22 (Div. 2 Only)|5|\n|<ul><li>- [ ] Done</li></ul>|373|[pSort](http://codeforces.com/problemset/problem/28/B)|Codeforces||Codeforces Beta Round #28 (Codeforces format)|5|\n|<ul><li>- [ ] Done</li></ul>|374|[Sysadmin Bob](http://codeforces.com/problemset/problem/31/B)|Codeforces||Codeforces Beta Round #31 (Div. 2, Codeforces format)|5|\n|<ul><li>- [ ] Done</li></ul>|375|[Chess](http://codeforces.com/problemset/problem/38/B)|Codeforces||School Personal Contest #1 (Winter Computer School 2010/11) - Codeforces Beta Round #38 (ACM-ICPC Rules)|5|\n|<ul><li>- [ ] Done</li></ul>|376|[Martian Dollar](http://codeforces.com/problemset/problem/41/B)|Codeforces||Codeforces Beta Round #40 (Div. 2)|5|\n|<ul><li>- [ ] Done</li></ul>|377|[T-shirts from Sponsor](http://codeforces.com/problemset/problem/46/B)|Codeforces||School Personal Contest #2 (Winter Computer School 2010/11) - Codeforces Beta Round #43 (ACM-ICPC Rules)|5|\n|<ul><li>- [ ] Done</li></ul>|378|[Sum](http://codeforces.com/problemset/problem/49/B)|Codeforces||Codeforces Beta Round #46 (Div. 2)|5|\n|<ul><li>- [ ] Done</li></ul>|379|[Spoilt Permutation](http://codeforces.com/problemset/problem/56/B)|Codeforces||Codeforces Beta Round #52 (Div. 2)|5|\n|<ul><li>- [ ] Done</li></ul>|380|[Energy exchange](http://codeforces.com/problemset/problem/68/B)|Codeforces||Codeforces Beta Round #62|5|\n|<ul><li>- [ ] Done</li></ul>|381|[Bets](http://codeforces.com/problemset/problem/69/B)|Codeforces||Codeforces Beta Round #63 (Div. 2)|5|\n|<ul><li>- [ ] Done</li></ul>|382|[Facetook Priority Wall](http://codeforces.com/problemset/problem/75/B)|Codeforces||Codeforces Beta Round #67 (Div. 2)|5|\n|<ul><li>- [ ] Done</li></ul>|383|[Colorful Field](http://codeforces.com/problemset/problem/79/B)|Codeforces||Codeforces Beta Round #71|5|\n|<ul><li>- [ ] Done</li></ul>|384|[Friends](http://codeforces.com/problemset/problem/94/B)|Codeforces||Codeforces Beta Round #76 (Div. 2 Only)|5|\n|<ul><li>- [ ] Done</li></ul>|385|[Help Chef Gerasim](http://codeforces.com/problemset/problem/99/B)|Codeforces||Codeforces Beta Round #78 (Div. 2 Only)|5|\n|<ul><li>- [ ] Done</li></ul>|386|[Datatypes](http://codeforces.com/problemset/problem/108/B)|Codeforces||Codeforces Beta Round #83 (Div. 2 Only)|5|\n|<ul><li>- [ ] Done</li></ul>|387|[PFAST Inc.](http://codeforces.com/problemset/problem/114/B)|Codeforces||Codeforces Beta Round #86 (Div. 2 Only)|5|\n|<ul><li>- [ ] Done</li></ul>|388|[Permutations](http://codeforces.com/problemset/problem/124/B)|Codeforces||Codeforces Beta Round #92 (Div. 2 Only)|5|\n|<ul><li>- [ ] Done</li></ul>|389|[Martian Clock](http://codeforces.com/problemset/problem/149/B)|Codeforces||Codeforces Round #106 (Div. 2)|5|\n|<ul><li>- [ ] Done</li></ul>|390|[Surrounded](http://codeforces.com/problemset/problem/190/B)|Codeforces||Codeforces Round #120 (Div. 2)|5|\n|<ul><li>- [ ] Done</li></ul>|391|[Game on Paper](http://codeforces.com/problemset/problem/203/B)|Codeforces||Codeforces Round #128 (Div. 2)|5|\n|<ul><li>- [ ] Done</li></ul>|392|[Young Table](http://codeforces.com/problemset/problem/237/B)|Codeforces||Codeforces Round #147 (Div. 2)|5|\n|<ul><li>- [ ] Done</li></ul>|393|[Jury Size](http://codeforces.com/problemset/problem/254/B)|Codeforces||Codeforces Round #155 (Div. 2)|5|\n|<ul><li>- [ ] Done</li></ul>|394|[Convex Shape](http://codeforces.com/problemset/problem/275/B)|Codeforces||Codeforces Round #168 (Div. 2)|5|\n|<ul><li>- [ ] Done</li></ul>|395|[Nearest Fraction](http://codeforces.com/problemset/problem/281/B)|Codeforces||Codeforces Round #172 (Div. 2)|5|\n|<ul><li>- [ ] Done</li></ul>|396|[Calendar](http://codeforces.com/problemset/problem/304/B)|Codeforces||Codeforces Round #183 (Div. 2)|5|\n|<ul><li>- [ ] Done</li></ul>|397|[Continued Fractions](http://codeforces.com/problemset/problem/305/B)|Codeforces||Codeforces Round #184 (Div. 2)|5|\n|<ul><li>- [ ] Done</li></ul>|398|[Two Heaps](http://codeforces.com/problemset/problem/353/B)|Codeforces||Codeforces Round #205 (Div. 2)|5|\n|<ul><li>- [ ] Done</li></ul>|399|[Berland Bingo](http://codeforces.com/problemset/problem/370/B)|Codeforces||Codeforces Round #217 (Div. 2)|5|\n|<ul><li>- [ ] Done</li></ul>|400|[Making Sequences is Fun](http://codeforces.com/problemset/problem/373/B)|Codeforces||Codeforces Round #219 (Div. 2)|5|\n|<ul><li>- [ ] Done</li></ul>|401|[Candy Boxes](http://codeforces.com/problemset/problem/488/B)|Codeforces||Codeforces Round #278 (Div. 2)|5|\n|<ul><li>- [ ] Done</li></ul>|402|[Balancer](http://codeforces.com/problemset/problem/440/B)|Codeforces||Testing Round #10|5|\n|<ul><li>- [ ] Done</li></ul>|403|[The Queue](http://codeforces.com/problemset/problem/767/B)|Codeforces||Codeforces Round #398 (Div. 2)|5|\n|<ul><li>- [ ] Done</li></ul>|404|[Cinema Cashier](http://codeforces.com/problemset/problem/10/B)|Codeforces||Codeforces Beta Round #10|6|\n|<ul><li>- [ ] Done</li></ul>|405|[Platforms](http://codeforces.com/problemset/problem/18/B)|Codeforces||Codeforces Beta Round #18 (Div. 2 Only)|6|\n|<ul><li>- [ ] Done</li></ul>|406|[Party](http://codeforces.com/problemset/problem/23/B)|Codeforces||Codeforces Beta Round #23|6|\n|<ul><li>- [ ] Done</li></ul>|407|[F1 Champions](http://codeforces.com/problemset/problem/24/B)|Codeforces||Codeforces Beta Round #24|6|\n|<ul><li>- [ ] Done</li></ul>|408|[Traffic Lights](http://codeforces.com/problemset/problem/29/B)|Codeforces||Codeforces Beta Round #29 (Div. 2, Codeforces format)|6|\n|<ul><li>- [ ] Done</li></ul>|409|[String Problem](http://codeforces.com/problemset/problem/33/B)|Codeforces||Codeforces Beta Round #33 (Codeforces format)|6|\n|<ul><li>- [ ] Done</li></ul>|410|[Land Lot](http://codeforces.com/problemset/problem/48/B)|Codeforces||School Personal Contest #3 (Winter Computer School 2010/11) - Codeforces Beta Round #45 (ACM-ICPC Rules)|6|\n|<ul><li>- [ ] Done</li></ul>|411|[Smallest number](http://codeforces.com/problemset/problem/55/B)|Codeforces||Codeforces Beta Round #51|6|\n|<ul><li>- [ ] Done</li></ul>|412|[Tyndex.Brome](http://codeforces.com/problemset/problem/62/B)|Codeforces||Codeforces Beta Round #58|6|\n|<ul><li>- [ ] Done</li></ul>|413|[Harry Potter and the History of Magic](http://codeforces.com/problemset/problem/65/B)|Codeforces||Codeforces Beta Round #60|6|\n|<ul><li>- [ ] Done</li></ul>|414|[Text Messaging](http://codeforces.com/problemset/problem/70/B)|Codeforces||Codeforces Beta Round #64|6|\n|<ul><li>- [ ] Done</li></ul>|415|[Train](http://codeforces.com/problemset/problem/74/B)|Codeforces||Codeforces Beta Round #68|6|\n|<ul><li>- [ ] Done</li></ul>|416|[Keyboard](http://codeforces.com/problemset/problem/88/B)|Codeforces||Codeforces Beta Round #73 (Div. 2 Only)|6|\n|<ul><li>- [ ] Done</li></ul>|417|[Very Interesting Game](http://codeforces.com/problemset/problem/117/B)|Codeforces||Codeforces Beta Round #88|6|\n|<ul><li>- [ ] Done</li></ul>|418|[Wallpaper](http://codeforces.com/problemset/problem/139/B)|Codeforces||Codeforces Beta Round #99 (Div. 2)|6|\n|<ul><li>- [ ] Done</li></ul>|419|[New Year Cards](http://codeforces.com/problemset/problem/140/B)|Codeforces||Codeforces Round #100|6|\n|<ul><li>- [ ] Done</li></ul>|420|[Polygons](http://codeforces.com/problemset/problem/166/B)|Codeforces||Codeforces Round #113 (Div. 2)|6|\n|<ul><li>- [ ] Done</li></ul>|421|[Wizards and Minimal Spell](http://codeforces.com/problemset/problem/168/B)|Codeforces||Codeforces Round #114 (Div. 2)|6|\n|<ul><li>- [ ] Done</li></ul>|422|[Plane of Tanks: Pro](http://codeforces.com/problemset/problem/175/B)|Codeforces||Codeforces Round #115|6|\n|<ul><li>- [ ] Done</li></ul>|423|[Solitaire](http://codeforces.com/problemset/problem/208/B)|Codeforces||Codeforces Round #130 (Div. 2)|6|\n|<ul><li>- [ ] Done</li></ul>|424|[Easy Tape Programming](http://codeforces.com/problemset/problem/239/B)|Codeforces||Codeforces Round #148 (Div. 2)|6|\n|<ul><li>- [ ] Done</li></ul>|425|[Unsorting Array](http://codeforces.com/problemset/problem/252/B)|Codeforces||Codeforces Round #153 (Div. 2)|6|\n|<ul><li>- [ ] Done</li></ul>|426|[Vasily the Bear and Fly](http://codeforces.com/problemset/problem/336/B)|Codeforces||Codeforces Round #195 (Div. 2)|6|\n|<ul><li>- [ ] Done</li></ul>|427|[Maximal Area Quadrilateral](http://codeforces.com/problemset/problem/340/B)|Codeforces||Codeforces Round #198 (Div. 2)|6|\n|<ul><li>- [ ] Done</li></ul>|428|[Number Busters](http://codeforces.com/problemset/problem/382/B)|Codeforces||Codeforces Round #224 (Div. 2)|6|\n|<ul><li>- [ ] Done</li></ul>|429|[Red and Blue Balls](http://codeforces.com/problemset/problem/399/B)|Codeforces||Codeforces Round #233 (Div. 2)|6|\n|<ul><li>- [ ] Done</li></ul>|430|[Binary Search Tree](https://uva.onlinejudge.org/index.php?option=onlinejudge&page=show_problem&problem=3705)|UVA|||6|\n|<ul><li>- [ ] Done</li></ul>|431|[Laser](http://codeforces.com/problemset/problem/15/B)|Codeforces||Codeforces Beta Round #15|7|\n|<ul><li>- [ ] Done</li></ul>|432|[Intersection](http://codeforces.com/problemset/problem/21/B)|Codeforces||Codeforces Alpha Round #21 (Codeforces format)|7|\n|<ul><li>- [ ] Done</li></ul>|433|[Codeforces World Finals](http://codeforces.com/problemset/problem/30/B)|Codeforces||Codeforces Beta Round #30 (Codeforces format)|7|\n|<ul><li>- [ ] Done</li></ul>|434|[Warehouse](http://codeforces.com/problemset/problem/35/B)|Codeforces||Codeforces Beta Round #35 (Div. 2)|7|\n|<ul><li>- [ ] Done</li></ul>|435|[Fractal](http://codeforces.com/problemset/problem/36/B)|Codeforces||Codeforces Beta Round #36|7|\n|<ul><li>- [ ] Done</li></ul>|436|[Computer Game](http://codeforces.com/problemset/problem/37/B)|Codeforces||Codeforces Beta Round #37|7|\n|<ul><li>- [ ] Done</li></ul>|437|[Repaintings](http://codeforces.com/problemset/problem/40/B)|Codeforces||Codeforces Beta Round #39|7|\n|<ul><li>- [ ] Done</li></ul>|438|[Game of chess unfinished](http://codeforces.com/problemset/problem/42/B)|Codeforces||Codeforces Beta Round #41|7|\n|<ul><li>- [ ] Done</li></ul>|439|[bHTML Tables Analisys](http://codeforces.com/problemset/problem/51/B)|Codeforces||Codeforces Beta Round #48|7|\n|<ul><li>- [ ] Done</li></ul>|440|[Blog Photo](http://codeforces.com/problemset/problem/53/B)|Codeforces||Codeforces Beta Round #49 (Div. 2)|7|\n|<ul><li>- [ ] Done</li></ul>|441|[Martian Architecture](http://codeforces.com/problemset/problem/57/B)|Codeforces||Codeforces Beta Round #53|7|\n|<ul><li>- [ ] Done</li></ul>|442|[Dark Assembly](http://codeforces.com/problemset/problem/105/B)|Codeforces||Codeforces Beta Round #81|7|\n|<ul><li>- [ ] Done</li></ul>|443|[Before Exam](http://codeforces.com/problemset/problem/119/B)|Codeforces||Codeforces Beta Round #90|7|\n|<ul><li>- [ ] Done</li></ul>|444|[Brand New Easy Problem](http://codeforces.com/problemset/problem/202/B)|Codeforces||Codeforces Round #127 (Div. 2)|7|\n|<ul><li>- [ ] Done</li></ul>|445|[Yaroslav and Two Strings](http://codeforces.com/problemset/problem/296/B)|Codeforces||Codeforces Round #179 (Div. 2)|7|\n|<ul><li>- [ ] Done</li></ul>|446|[Inna, Dima and Song](http://codeforces.com/problemset/problem/390/B)|Codeforces||Codeforces Round #229 (Div. 2)|7|\n|<ul><li>- [ ] Done</li></ul>|447|[Three matrices](http://codeforces.com/problemset/problem/393/B)|Codeforces||Codeforces Round #230 (Div. 2)|7|\n|<ul><li>- [ ] Done</li></ul>|448|[On Corruption and Numbers](http://codeforces.com/problemset/problem/397/B)|Codeforces||Codeforces Round #232 (Div. 2)|7|\n|<ul><li>- [ ] Done</li></ul>|449|[Rooks and Rectangles](http://codeforces.com/problemset/problem/524/E)|Codeforces||VK Cup 2015 - Round 1|7|\n|<ul><li>- [ ] Done</li></ul>|450|[Decode](https://icpcarchive.ecs.baylor.edu/index.php?option=onlinejudge&page=show_problem&problem=3364)|Live Archive|1990|North America - East Central NA|7|\n|<ul><li>- [ ] Done</li></ul>|451|[Letter A](http://codeforces.com/problemset/problem/13/B)|Codeforces||Codeforces Beta Round #13|8|\n|<ul><li>- [ ] Done</li></ul>|452|[Cutting Jigsaw Puzzle](http://codeforces.com/problemset/problem/54/B)|Codeforces||Codeforces Beta Round #50|8|\n|<ul><li>- [ ] Done</li></ul>|453|[Need For Brake](http://codeforces.com/problemset/problem/73/B)|Codeforces||Codeforces Beta Round #66|8|\n|<ul><li>- [ ] Done</li></ul>|454|[Special Olympics](http://codeforces.com/problemset/problem/199/B)|Codeforces||Codeforces Round #125 (Div. 2)|8|\n|<ul><li>- [ ] Done</li></ul>|455|[Very Beautiful Number](http://codeforces.com/problemset/problem/394/B)|Codeforces||Codeforces Round #231 (Div. 2)|8|\n|<ul><li>- [ ] Done</li></ul>|456|[Divisibility Rules](http://codeforces.com/problemset/problem/180/B)|Codeforces||Codeforces Round #116 (Div. 2, ACM-ICPC Rules)|9|\n|<ul><li>- [ ] Done</li></ul>|457|[Fence](p?ID=29)|A2 Online Judge|||9|\n"
  },
  {
    "path": "categories/011. Codeforces_Div._2_-_D_Problems/README.md",
    "content": "# 011. Codeforces_Div._2_-_D_Problems\n\n\n| Checkbox | ID | Problem Name|Online Judge|Year|Contest|Difficulty Level|\n|:---:|:---:|:---:|:---:|:---:|:---:|:---:|\n|<ul><li>- [ ] Done</li></ul>|1|[Xenia and Bit Operations](http://codeforces.com/problemset/problem/339/D)|Codeforces||Codeforces Round #197 (Div. 2)|1|\n|<ul><li>- [ ] Done</li></ul>|2|[Mashmokh and ACM](http://codeforces.com/problemset/problem/414/B)|Codeforces||Codeforces Round #240 (Div. 1) & Codeforces Round #240 (Div. 2)|1|\n|<ul><li>- [ ] Done</li></ul>|3|[Flowers](http://codeforces.com/problemset/problem/474/D)|Codeforces||Codeforces Round #271 (Div. 2)|1|\n|<ul><li>- [ ] Done</li></ul>|4|[Queue](http://codeforces.com/problemset/problem/545/D)|Codeforces||Codeforces Round #303 (Div. 2)|1|\n|<ul><li>- [ ] Done</li></ul>|5|[Tetrahedron](http://codeforces.com/problemset/problem/166/E)|Codeforces||Codeforces Round #113 (Div. 2)|1|\n|<ul><li>- [ ] Done</li></ul>|6|[Coffee Central](https://icpcarchive.ecs.baylor.edu/index.php?option=onlinejudge&page=show_problem&problem=3133)|Live Archive|2011|World Finals - Orlando|1|\n|<ul><li>- [ ] Done</li></ul>|7|[Longest Common Subsequence](https://uva.onlinejudge.org/index.php?option=onlinejudge&page=show_problem&problem=1346)|UVA|||1|\n|<ul><li>- [ ] Done</li></ul>|8|[Caesar's Legions](http://codeforces.com/problemset/problem/118/D)|Codeforces||Codeforces Beta Round #89 (Div. 2)|2|\n|<ul><li>- [ ] Done</li></ul>|9|[Password](http://codeforces.com/problemset/problem/126/B)|Codeforces||Codeforces Beta Round #93 (Div. 1 Only) & Codeforces Beta Round #93 (Div. 2 Only)|2|\n|<ul><li>- [ ] Done</li></ul>|10|[Prizes, Prizes, more Prizes](http://codeforces.com/problemset/problem/208/D)|Codeforces||Codeforces Round #130 (Div. 2)|2|\n|<ul><li>- [ ] Done</li></ul>|11|[Alternating Current](http://codeforces.com/problemset/problem/343/B)|Codeforces||Codeforces Round #200 (Div. 1) & Codeforces Round #200 (Div. 2)|2|\n|<ul><li>- [ ] Done</li></ul>|12|[Multiplication Table](http://codeforces.com/problemset/problem/448/D)|Codeforces||Codeforces Round #256 (Div. 2)|2|\n|<ul><li>- [ ] Done</li></ul>|13|[Vasya and Chess](http://codeforces.com/problemset/problem/493/D)|Codeforces||Codeforces Round #281 (Div. 2)|2|\n|<ul><li>- [ ] Done</li></ul>|14|[Soldier and Number Game](http://codeforces.com/problemset/problem/546/D)|Codeforces||Codeforces Round #304 (Div. 2)|2|\n|<ul><li>- [ ] Done</li></ul>|15|[Equivalent Strings](http://codeforces.com/problemset/problem/559/B)|Codeforces||Codeforces Round #313 (Div. 1) & Codeforces Round #313 (Div. 2)|2|\n|<ul><li>- [ ] Done</li></ul>|16|[Dima and Lisa](http://codeforces.com/problemset/problem/584/D)|Codeforces||Codeforces Round #324 (Div. 2)|2|\n|<ul><li>- [ ] Done</li></ul>|17|[Magic Powder - 1](http://codeforces.com/problemset/problem/670/D1)|Codeforces||Codeforces Round #350 (Div. 2)|2|\n|<ul><li>- [ ] Done</li></ul>|18|[Magic Powder - 2](http://codeforces.com/problemset/problem/670/D2)|Codeforces||Codeforces Round #350 (Div. 2)|2|\n|<ul><li>- [ ] Done</li></ul>|19|[Taxes](http://codeforces.com/problemset/problem/735/D)|Codeforces||Codeforces Round #382 (Div. 2) & Codeforces Round #382 (Div. 1)|2|\n|<ul><li>- [ ] Done</li></ul>|20|[String Game](http://codeforces.com/problemset/problem/778/A)|Codeforces||Codeforces Round #402 (Div. 1) & Codeforces Round #402 (Div. 2)|2|\n|<ul><li>- [ ] Done</li></ul>|21|[Minimum number of steps](http://codeforces.com/problemset/problem/804/B)|Codeforces||Codeforces Round #411 (Div. 1) & Codeforces Round #411 (Div. 2)|2|\n|<ul><li>- [ ] Done</li></ul>|22|[Mysterious Present](http://codeforces.com/problemset/problem/4/D)|Codeforces||Codeforces Beta Round #4 (Div. 2 Only)|3|\n|<ul><li>- [ ] Done</li></ul>|23|[Common Divisors](http://codeforces.com/problemset/problem/182/D)|Codeforces||Codeforces Round #117 (Div. 2)|3|\n|<ul><li>- [ ] Done</li></ul>|24|[Choosing Capital for Treeland](http://codeforces.com/problemset/problem/219/D)|Codeforces||Codeforces Round #135 (Div. 2)|3|\n|<ul><li>- [ ] Done</li></ul>|25|[Little Elephant and Array](http://codeforces.com/problemset/problem/220/B)|Codeforces||Codeforces Round #136 (Div. 1) & Codeforces Round #136 (Div. 2)|3|\n|<ul><li>- [ ] Done</li></ul>|26|[Colorful Graph](http://codeforces.com/problemset/problem/246/D)|Codeforces||Codeforces Round #151 (Div. 2)|3|\n|<ul><li>- [ ] Done</li></ul>|27|[Good Sequences](http://codeforces.com/problemset/problem/264/B)|Codeforces||Codeforces Round #162 (Div. 1) & Codeforces Round #162 (Div. 2)|3|\n|<ul><li>- [ ] Done</li></ul>|28|[Greenhouse Effect](http://codeforces.com/problemset/problem/269/B)|Codeforces||Codeforces Round #165 (Div. 1) & Codeforces Round #165 (Div. 2)|3|\n|<ul><li>- [ ] Done</li></ul>|29|[Good Substrings](http://codeforces.com/problemset/problem/271/D)|Codeforces||Codeforces Round #166 (Div. 2)|3|\n|<ul><li>- [ ] Done</li></ul>|30|[Little Girl and Maximum XOR](http://codeforces.com/problemset/problem/276/D)|Codeforces||Codeforces Round #169 (Div. 2)|3|\n|<ul><li>- [ ] Done</li></ul>|31|[Greg and Graph](http://codeforces.com/problemset/problem/295/B)|Codeforces||Codeforces Round #179 (Div. 1) & Codeforces Round #179 (Div. 2)|3|\n|<ul><li>- [ ] Done</li></ul>|32|[Biridian Forest](http://codeforces.com/problemset/problem/329/B)|Codeforces||Codeforces Round #192 (Div. 1) & Codeforces Round #192 (Div. 2)|3|\n|<ul><li>- [ ] Done</li></ul>|33|[Bubble Sort Graph](http://codeforces.com/problemset/problem/340/D)|Codeforces||Codeforces Round #198 (Div. 2) & Codeforces Round #198 (Div. 1)|3|\n|<ul><li>- [ ] Done</li></ul>|34|[Long Path](http://codeforces.com/problemset/problem/407/B)|Codeforces||Codeforces Round #239 (Div. 1) & Codeforces Round #239 (Div. 2)|3|\n|<ul><li>- [ ] Done</li></ul>|35|[Working out](http://codeforces.com/problemset/problem/429/B)|Codeforces||Codeforces Round #245 (Div. 1) & Codeforces Round #245 (Div. 2)|3|\n|<ul><li>- [ ] Done</li></ul>|36|[Andrey and Problem](http://codeforces.com/problemset/problem/442/B)|Codeforces||Codeforces Round #253 (Div. 1) & Codeforces Round #253 (Div. 2)|3|\n|<ul><li>- [ ] Done</li></ul>|37|[Pashmak and Parmida's problem](http://codeforces.com/problemset/problem/459/D)|Codeforces||Codeforces Round #261 (Div. 2)|3|\n|<ul><li>- [ ] Done</li></ul>|38|[Gargari and Permutations](http://codeforces.com/problemset/problem/463/D)|Codeforces||Codeforces Round #264 (Div. 2)|3|\n|<ul><li>- [ ] Done</li></ul>|39|[Long Jumps](http://codeforces.com/problemset/problem/479/D)|Codeforces||Codeforces Round #274 (Div. 2) & Codeforces Round #274 (Div. 1)|3|\n|<ul><li>- [ ] Done</li></ul>|40|[Interesting Array](http://codeforces.com/problemset/problem/482/B)|Codeforces||Codeforces Round #275 (Div. 1) & Codeforces Round #275 (Div. 2)|3|\n|<ul><li>- [ ] Done</li></ul>|41|[Maximum Value](http://codeforces.com/problemset/problem/484/B)|Codeforces||Codeforces Round #276 (Div. 1) & Codeforces Round #276 (Div. 2)|3|\n|<ul><li>- [ ] Done</li></ul>|42|[Unbearable Controversy of Being](http://codeforces.com/problemset/problem/489/D)|Codeforces||Codeforces Round #277.5 (Div. 2)|3|\n|<ul><li>- [ ] Done</li></ul>|43|[Ilya and Escalator](http://codeforces.com/problemset/problem/518/D)|Codeforces||Codeforces Round #293 (Div. 2)|3|\n|<ul><li>- [ ] Done</li></ul>|44|[A and B and Interesting Substrings](http://codeforces.com/problemset/problem/519/D)|Codeforces||Codeforces Round #294 (Div. 2)|3|\n|<ul><li>- [ ] Done</li></ul>|45|[Mike and Feet](http://codeforces.com/problemset/problem/547/B)|Codeforces||Codeforces Round #305 (Div. 1) & Codeforces Round #305 (Div. 2)|3|\n|<ul><li>- [ ] Done</li></ul>|46|[Bear and Blocks](http://codeforces.com/problemset/problem/573/B)|Codeforces||Codeforces Round #318 [RussianCodeCup Thanks-Round] (Div. 1) & Codeforces Round #318 [RussianCodeCup Thanks-Round] (Div. 2)|3|\n|<ul><li>- [ ] Done</li></ul>|47|[\"Or\" Game](http://codeforces.com/problemset/problem/578/B)|Codeforces||Codeforces Round #320 (Div. 1) [Bayan Thanks-Round] & Codeforces Round #320 (Div. 2) [Bayan Thanks-Round]|3|\n|<ul><li>- [ ] Done</li></ul>|48|[Kefa and Dishes](http://codeforces.com/problemset/problem/580/D)|Codeforces||Codeforces Round #321 (Div. 2)|3|\n|<ul><li>- [ ] Done</li></ul>|49|[Zuma](http://codeforces.com/problemset/problem/607/B)|Codeforces||Codeforces Round #336 (Div. 1) & Codeforces Round #336 (Div. 2)|3|\n|<ul><li>- [ ] Done</li></ul>|50|[Polyline](http://codeforces.com/problemset/problem/617/D)|Codeforces||Codeforces Round #340 (Div. 2)|3|\n|<ul><li>- [ ] Done</li></ul>|51|[Bicycle Race](http://codeforces.com/problemset/problem/659/D)|Codeforces||Codeforces Round #346 (Div. 2)|3|\n|<ul><li>- [ ] Done</li></ul>|52|[Fix a Tree](http://codeforces.com/problemset/problem/698/B)|Codeforces||Codeforces Round #363 (Div. 1) & Codeforces Round #363 (Div. 2)|3|\n|<ul><li>- [ ] Done</li></ul>|53|[Vasiliy's Multiset](http://codeforces.com/problemset/problem/706/D)|Codeforces||Codeforces Round #367 (Div. 2)|3|\n|<ul><li>- [ ] Done</li></ul>|54|[Lakes in Berland](http://codeforces.com/problemset/problem/723/D)|Codeforces||Codeforces Round #375 (Div. 2)|3|\n|<ul><li>- [ ] Done</li></ul>|55|[Exams](http://codeforces.com/problemset/problem/732/D)|Codeforces||Codeforces Round #377 (Div. 2)|3|\n|<ul><li>- [ ] Done</li></ul>|56|[Kostya the Sculptor](http://codeforces.com/problemset/problem/733/D)|Codeforces||Codeforces Round #378 (Div. 2)|3|\n|<ul><li>- [ ] Done</li></ul>|57|[Anton and Chess](http://codeforces.com/problemset/problem/734/D)|Codeforces||Codeforces Round #379 (Div. 2)|3|\n|<ul><li>- [ ] Done</li></ul>|58|[Arpa's weak amphitheater and Mehrdad's valuable Hoses](http://codeforces.com/problemset/problem/741/B)|Codeforces||Codeforces Round #383 (Div. 1) & Codeforces Round #383 (Div. 2)|3|\n|<ul><li>- [ ] Done</li></ul>|59|[Green and Black Tea](http://codeforces.com/problemset/problem/746/D)|Codeforces||Codeforces Round #386 (Div. 2)|3|\n|<ul><li>- [ ] Done</li></ul>|60|[Cloud of Hashtags](http://codeforces.com/problemset/problem/777/D)|Codeforces||Codeforces Round #401 (Div. 2)|3|\n|<ul><li>- [ ] Done</li></ul>|61|[Make a Permutation!](http://codeforces.com/problemset/problem/864/D)|Codeforces||Codeforces Round #436 (Div. 2)|3|\n|<ul><li>- [ ] Done</li></ul>|62|[Sorting the Coins](http://codeforces.com/problemset/problem/875/B)|Codeforces||Codeforces Round #441 (Div. 1, by Moscow Team Olympiad) & Codeforces Round #441 (Div. 2, by Moscow Team Olympiad)|3|\n|<ul><li>- [ ] Done</li></ul>|63|[Love Rescue](http://codeforces.com/problemset/problem/939/D)|Codeforces||Codeforces Round #464 (Div. 2)|3|\n|<ul><li>- [ ] Done</li></ul>|64|[Roads not only in Berland](http://codeforces.com/problemset/problem/25/D)|Codeforces||Codeforces Beta Round #25 (Div. 2 Only)|4|\n|<ul><li>- [ ] Done</li></ul>|65|[Road Map](http://codeforces.com/problemset/problem/34/D)|Codeforces||Codeforces Beta Round #34 (Div. 2)|4|\n|<ul><li>- [ ] Done</li></ul>|66|[Eternal Victory](http://codeforces.com/problemset/problem/61/D)|Codeforces||Codeforces Beta Round #57 (Div. 2)|4|\n|<ul><li>- [ ] Done</li></ul>|67|[Queue](http://codeforces.com/problemset/problem/91/B)|Codeforces||Codeforces Beta Round #75 (Div. 1 Only) & Codeforces Beta Round #75 (Div. 2 Only)|4|\n|<ul><li>- [ ] Done</li></ul>|68|[Petya and Divisors](http://codeforces.com/problemset/problem/111/B)|Codeforces||Codeforces Beta Round #85 (Div. 1 Only) & Codeforces Beta Round #85 (Div. 2 Only)|4|\n|<ul><li>- [ ] Done</li></ul>|69|[Subway](http://codeforces.com/problemset/problem/131/D)|Codeforces||Codeforces Beta Round #95 (Div. 2)|4|\n|<ul><li>- [ ] Done</li></ul>|70|[Bag of mice](http://codeforces.com/problemset/problem/148/D)|Codeforces||Codeforces Round #105 (Div. 2)|4|\n|<ul><li>- [ ] Done</li></ul>|71|[Quantity of Strings](http://codeforces.com/problemset/problem/150/B)|Codeforces||Codeforces Round #107 (Div. 1) & Codeforces Round #107 (Div. 2)|4|\n|<ul><li>- [ ] Done</li></ul>|72|[Colliders](http://codeforces.com/problemset/problem/154/B)|Codeforces||Codeforces Round #109 (Div. 1) & Codeforces Round #109 (Div. 2)|4|\n|<ul><li>- [ ] Done</li></ul>|73|[Little Elephant and Cards](http://codeforces.com/problemset/problem/204/B)|Codeforces||Codeforces Round #129 (Div. 1) & Codeforces Round #129 (Div. 2)|4|\n|<ul><li>- [ ] Done</li></ul>|74|[Planets](http://codeforces.com/problemset/problem/229/B)|Codeforces||Codeforces Round #142 (Div. 1) & Codeforces Round #142 (Div. 2)|4|\n|<ul><li>- [ ] Done</li></ul>|75|[Magic Box](http://codeforces.com/problemset/problem/231/D)|Codeforces||Codeforces Round #143 (Div. 2)|4|\n|<ul><li>- [ ] Done</li></ul>|76|[Zero Tree](http://codeforces.com/problemset/problem/274/B)|Codeforces||Codeforces Round #168 (Div. 1) & Codeforces Round #168 (Div. 2)|4|\n|<ul><li>- [ ] Done</li></ul>|77|[Cow Program](http://codeforces.com/problemset/problem/283/B)|Codeforces||Codeforces Round #174 (Div. 1) & Codeforces Round #174 (Div. 2)|4|\n|<ul><li>- [ ] Done</li></ul>|78|[Polo the Penguin and Houses ](http://codeforces.com/problemset/problem/288/B)|Codeforces||Codeforces Round #177 (Div. 1)|4|\n|<ul><li>- [ ] Done</li></ul>|79|[Fish Weight](http://codeforces.com/problemset/problem/297/B)|Codeforces||Codeforces Round #180 (Div. 1) & Codeforces Round #180 (Div. 2)|4|\n|<ul><li>- [ ] Done</li></ul>|80|[Psychos in a Line](http://codeforces.com/problemset/problem/319/B)|Codeforces||Codeforces Round #189 (Div. 1) & Codeforces Round #189 (Div. 2)|4|\n|<ul><li>- [ ] Done</li></ul>|81|[Book of Evil](http://codeforces.com/problemset/problem/337/D)|Codeforces||Codeforces Round #196 (Div. 2) & Codeforces Round #196 (Div. 1)|4|\n|<ul><li>- [ ] Done</li></ul>|82|[Pair of Numbers](http://codeforces.com/problemset/problem/359/D)|Codeforces||Codeforces Round #209 (Div. 2)|4|\n|<ul><li>- [ ] Done</li></ul>|83|[Vessels](http://codeforces.com/problemset/problem/371/D)|Codeforces||Codeforces Round #218 (Div. 2)|4|\n|<ul><li>- [ ] Done</li></ul>|84|[Maximum Submatrix 2](http://codeforces.com/problemset/problem/375/B)|Codeforces||Codeforces Round #221 (Div. 1) & Codeforces Round #221 (Div. 2)|4|\n|<ul><li>- [ ] Done</li></ul>|85|[Toy Sum](http://codeforces.com/problemset/problem/405/D)|Codeforces||Codeforces Round #238 (Div. 2) & Codeforces Round #238 (Div. 1)|4|\n|<ul><li>- [ ] Done</li></ul>|86|[Prefixes and Suffixes](http://codeforces.com/problemset/problem/432/D)|Codeforces||Codeforces Round #246 (Div. 2)|4|\n|<ul><li>- [ ] Done</li></ul>|87|[The Child and Zoo](http://codeforces.com/problemset/problem/437/D)|Codeforces||Codeforces Round #250 (Div. 2) & Codeforces Round #250 (Div. 1)|4|\n|<ul><li>- [ ] Done</li></ul>|88|[Devu and his Brother](http://codeforces.com/problemset/problem/439/D)|Codeforces||Codeforces Round #251 (Div. 2)|4|\n|<ul><li>- [ ] Done</li></ul>|89|[DZY Loves Modification](http://codeforces.com/problemset/problem/446/B)|Codeforces||Codeforces Round #255 (Div. 1) & Codeforces Round #255 (Div. 2)|4|\n|<ul><li>- [ ] Done</li></ul>|90|[Jzzhu and Cities](http://codeforces.com/problemset/problem/449/B)|Codeforces||Codeforces Round #257 (Div. 1) & Codeforces Round #257 (Div. 2)|4|\n|<ul><li>- [ ] Done</li></ul>|91|[Count Good Substrings](http://codeforces.com/problemset/problem/451/D)|Codeforces||Codeforces Round #258 (Div. 2)|4|\n|<ul><li>- [ ] Done</li></ul>|92|[Little Pony and Harmony Chest](http://codeforces.com/problemset/problem/453/B)|Codeforces||Codeforces Round #259 (Div. 1) & Codeforces Round #259 (Div. 2)|4|\n|<ul><li>- [ ] Done</li></ul>|93|[A Lot of Games](http://codeforces.com/problemset/problem/455/B)|Codeforces||Codeforces Round #260 (Div. 1) & Codeforces Round #260 (Div. 2)|4|\n|<ul><li>- [ ] Done</li></ul>|94|[Appleman and Tree](http://codeforces.com/problemset/problem/461/B)|Codeforces||Codeforces Round #263 (Div. 1) & Codeforces Round #263 (Div. 2)|4|\n|<ul><li>- [ ] Done</li></ul>|95|[Two Sets](http://codeforces.com/problemset/problem/468/B)|Codeforces||Codeforces Round #268 (Div. 1) & Codeforces Round #268 (Div. 2)|4|\n|<ul><li>- [ ] Done</li></ul>|96|[MUH and Cube Walls](http://codeforces.com/problemset/problem/471/D)|Codeforces||Codeforces Round #269 (Div. 2)|4|\n|<ul><li>- [ ] Done</li></ul>|97|[Design Tutorial: Inverse the Problem](http://codeforces.com/problemset/problem/472/D)|Codeforces||Codeforces Round #270|4|\n|<ul><li>- [ ] Done</li></ul>|98|[Dreamoon and Sets](http://codeforces.com/problemset/problem/476/D)|Codeforces||Codeforces Round #272 (Div. 2) & Codeforces Round #272 (Div. 1)|4|\n|<ul><li>- [ ] Done</li></ul>|99|[Red-Green Towers](http://codeforces.com/problemset/problem/478/D)|Codeforces||Codeforces Round #273 (Div. 2)|4|\n|<ul><li>- [ ] Done</li></ul>|100|[Vanya and Computer Game](http://codeforces.com/problemset/problem/492/D)|Codeforces||Codeforces Round #280 (Div. 2)|4|\n|<ul><li>- [ ] Done</li></ul>|101|[Tennis Game](http://codeforces.com/problemset/problem/496/D)|Codeforces||Codeforces Round #283 (Div. 2) & Codeforces Round #283 (Div. 1)|4|\n|<ul><li>- [ ] Done</li></ul>|102|[Fox And Jumping](http://codeforces.com/problemset/problem/510/D)|Codeforces||Codeforces Round #290 (Div. 2) & Codeforces Round #290 (Div. 1)|4|\n|<ul><li>- [ ] Done</li></ul>|103|[Drazil and Tiles](http://codeforces.com/problemset/problem/515/D)|Codeforces||Codeforces Round #292 (Div. 2) & Codeforces Round #292 (Div. 1)|4|\n|<ul><li>- [ ] Done</li></ul>|104|[Clique Problem](http://codeforces.com/problemset/problem/527/D)|Codeforces||Codeforces Round #296 (Div. 2) & Codeforces Round #296 (Div. 1)|4|\n|<ul><li>- [ ] Done</li></ul>|105|[Tavas and Malekas](http://codeforces.com/problemset/problem/535/D)|Codeforces||Codeforces Round #299 (Div. 2) & Codeforces Round #299 (Div. 1)|4|\n|<ul><li>- [ ] Done</li></ul>|106|[Weird Chess](http://codeforces.com/problemset/problem/538/D)|Codeforces||Codeforces Round #300|4|\n|<ul><li>- [ ] Done</li></ul>|107|[Bad Luck Island](http://codeforces.com/problemset/problem/540/D)|Codeforces||Codeforces Round #301 (Div. 2)|4|\n|<ul><li>- [ ] Done</li></ul>|108|[Destroying Roads](http://codeforces.com/problemset/problem/543/B)|Codeforces||Codeforces Round #302 (Div. 1) & Codeforces Round #302 (Div. 2)|4|\n|<ul><li>- [ ] Done</li></ul>|109|[Regular Bridge](http://codeforces.com/problemset/problem/550/D)|Codeforces||Codeforces Round #306 (Div. 2)|4|\n|<ul><li>- [ ] Done</li></ul>|110|[Vanya and Triangles](http://codeforces.com/problemset/problem/552/D)|Codeforces||Codeforces Round #308 (Div. 2)|4|\n|<ul><li>- [ ] Done</li></ul>|111|[Case of Fugitive](http://codeforces.com/problemset/problem/555/B)|Codeforces||Codeforces Round #310 (Div. 1) & Codeforces Round #310 (Div. 2)|4|\n|<ul><li>- [ ] Done</li></ul>|112|[One-Dimensional Battle Ships](http://codeforces.com/problemset/problem/567/D)|Codeforces||Codeforces Round #Pi (Div. 2)|4|\n|<ul><li>- [ ] Done</li></ul>|113|[Tree Requests](http://codeforces.com/problemset/problem/570/D)|Codeforces||Codeforces Round #316 (Div. 2)|4|\n|<ul><li>- [ ] Done</li></ul>|114|[Three Logos](http://codeforces.com/problemset/problem/581/D)|Codeforces||Codeforces Round #322 (Div. 2)|4|\n|<ul><li>- [ ] Done</li></ul>|115|[Phillip and Trains](http://codeforces.com/problemset/problem/585/B)|Codeforces||Codeforces Round #325 (Div. 1) & Codeforces Round #325 (Div. 2)|4|\n|<ul><li>- [ ] Done</li></ul>|116|[Spongebob and Squares](http://codeforces.com/problemset/problem/599/D)|Codeforces||Codeforces Round #332 (Div. 2)|4|\n|<ul><li>- [ ] Done</li></ul>|117|[Lazy Student](http://codeforces.com/problemset/problem/605/B)|Codeforces||Codeforces Round #335 (Div. 1) & Codeforces Round #335 (Div. 2)|4|\n|<ul><li>- [ ] Done</li></ul>|118|[Multipliers](http://codeforces.com/problemset/problem/615/D)|Codeforces||Codeforces Round #338 (Div. 2)|4|\n|<ul><li>- [ ] Done</li></ul>|119|[Babaei and Birthday Cake](http://codeforces.com/problemset/problem/629/D)|Codeforces||Codeforces Round #343 (Div. 2)|4|\n|<ul><li>- [ ] Done</li></ul>|120|[Image Preview](http://codeforces.com/problemset/problem/650/B)|Codeforces||Codeforces Round #345 (Div. 1) & Codeforces Round #345 (Div. 2)|4|\n|<ul><li>- [ ] Done</li></ul>|121|[Little Artem and Dance](http://codeforces.com/problemset/problem/641/C)|Codeforces||VK Cup 2016 - Round 2|4|\n|<ul><li>- [ ] Done</li></ul>|122|[Bear and Two Paths](http://codeforces.com/problemset/problem/643/B)|Codeforces||VK Cup 2016 - Round 3|4|\n|<ul><li>- [ ] Done</li></ul>|123|[Robin Hood](http://codeforces.com/problemset/problem/671/B)|Codeforces||Codeforces Round #352 (Div. 1) & Codeforces Round #352 (Div. 2)|4|\n|<ul><li>- [ ] Done</li></ul>|124|[Tree Construction](http://codeforces.com/problemset/problem/675/D)|Codeforces||Codeforces Round #353 (Div. 2)|4|\n|<ul><li>- [ ] Done</li></ul>|125|[Remainders Game](http://codeforces.com/problemset/problem/687/B)|Codeforces||Codeforces Round #360 (Div. 1) & Codeforces Round #360 (Div. 2)|4|\n|<ul><li>- [ ] Done</li></ul>|126|[Puzzles](http://codeforces.com/problemset/problem/696/B)|Codeforces||Codeforces Round #362 (Div. 1) & Codeforces Round #362 (Div. 2)|4|\n|<ul><li>- [ ] Done</li></ul>|127|[As Fast As Possible](http://codeforces.com/problemset/problem/700/A)|Codeforces||Codeforces Round #364 (Div. 1) & Codeforces Round #364 (Div. 2)|4|\n|<ul><li>- [ ] Done</li></ul>|128|[Directed Roads](http://codeforces.com/problemset/problem/711/D)|Codeforces||Codeforces Round #369 (Div. 2)|4|\n|<ul><li>- [ ] Done</li></ul>|129|[Sea Battle](http://codeforces.com/problemset/problem/729/D)|Codeforces||Technocup 2017 - Elimination Round 2|4|\n|<ul><li>- [ ] Done</li></ul>|130|[Alyona and a tree](http://codeforces.com/problemset/problem/739/B)|Codeforces||Codeforces Round #381 (Div. 1) & Codeforces Round #381 (Div. 2)|4|\n|<ul><li>- [ ] Done</li></ul>|131|[Chloe and pleasant prizes](http://codeforces.com/problemset/problem/743/D)|Codeforces||Codeforces Round #384 (Div. 2)|4|\n|<ul><li>- [ ] Done</li></ul>|132|[Dasha and Very Difficult Problem](http://codeforces.com/problemset/problem/761/D)|Codeforces||Codeforces Round #394 (Div. 2)|4|\n|<ul><li>- [ ] Done</li></ul>|133|[Travel Card](http://codeforces.com/problemset/problem/756/B)|Codeforces||8VC Venture Cup 2017 - Final Round|4|\n|<ul><li>- [ ] Done</li></ul>|134|[The Door Problem](http://codeforces.com/problemset/problem/776/D)|Codeforces||ICM Technex 2017 and Codeforces Round #400 (Div. 1 + Div. 2, combined)|4|\n|<ul><li>- [ ] Done</li></ul>|135|[Innokenty and a Football League](http://codeforces.com/problemset/problem/780/D)|Codeforces||?????????? 2017 - ????? (?????? ??? ??????-??????????)|4|\n|<ul><li>- [ ] Done</li></ul>|136|[Volatile Kite](http://codeforces.com/problemset/problem/772/B)|Codeforces||VK Cup 2017 - Round 2|4|\n|<ul><li>- [ ] Done</li></ul>|137|[Office Keys](http://codeforces.com/problemset/problem/830/A)|Codeforces||Codeforces Round #424 (Div. 1, rated, based on VK Cup Finals) & Codeforces Round #424 (Div. 2, rated, based on VK Cup Finals)|4|\n|<ul><li>- [ ] Done</li></ul>|138|[High Load](http://codeforces.com/problemset/problem/827/B)|Codeforces||Codeforces Round #423 (Div. 1, rated, based on VK Cup Finals) & Codeforces Round #423 (Div. 2, rated, based on VK Cup Finals)|4|\n|<ul><li>- [ ] Done</li></ul>|139|[My pretty girl Noora](http://codeforces.com/problemset/problem/822/D)|Codeforces||Codeforces Round #422 (Div. 2)|4|\n|<ul><li>- [ ] Done</li></ul>|140|[Alarm Clock](http://codeforces.com/problemset/problem/898/D)|Codeforces||Codeforces Round #451 (Div. 2)|4|\n|<ul><li>- [ ] Done</li></ul>|141|[Palindrome pairs](http://codeforces.com/problemset/problem/159/D)|Codeforces||VK Cup 2012 Qualification Round 2|4|\n|<ul><li>- [ ] Done</li></ul>|142|[Least Cost Bracket Sequence](http://codeforces.com/problemset/problem/3/D)|Codeforces||Codeforces Beta Round #3|5|\n|<ul><li>- [ ] Done</li></ul>|143|[Palindrome Degree](http://codeforces.com/problemset/problem/7/D)|Codeforces||Codeforces Beta Round #7|5|\n|<ul><li>- [ ] Done</li></ul>|144|[How many trees?](http://codeforces.com/problemset/problem/9/D)|Codeforces||Codeforces Beta Round #9 (Div. 2 Only)|5|\n|<ul><li>- [ ] Done</li></ul>|145|[A Simple Task](http://codeforces.com/problemset/problem/11/D)|Codeforces||Codeforces Beta Round #11|5|\n|<ul><li>- [ ] Done</li></ul>|146|[Two Paths](http://codeforces.com/problemset/problem/14/D)|Codeforces||Codeforces Beta Round #14 (Div. 2)|5|\n|<ul><li>- [ ] Done</li></ul>|147|[Petya and His Friends](http://codeforces.com/problemset/problem/66/D)|Codeforces||Codeforces Beta Round #61 (Div. 2)|5|\n|<ul><li>- [ ] Done</li></ul>|148|[Falling Anvils](http://codeforces.com/problemset/problem/77/B)|Codeforces||Codeforces Beta Round #69 (Div. 1 Only) & Codeforces Beta Round #69 (Div. 2 Only)|5|\n|<ul><li>- [ ] Done</li></ul>|149|[Volleyball](http://codeforces.com/problemset/problem/95/C)|Codeforces||Codeforces Beta Round #77 (Div. 1 Only) & Codeforces Beta Round #77 (Div. 2 Only)|5|\n|<ul><li>- [ ] Done</li></ul>|150|[Basketball Team](http://codeforces.com/problemset/problem/107/B)|Codeforces||Codeforces Beta Round #83 (Div. 1 Only) & Codeforces Beta Round #83 (Div. 2 Only)|5|\n|<ul><li>- [ ] Done</li></ul>|151|[Petr#](http://codeforces.com/problemset/problem/113/B)|Codeforces||Codeforces Beta Round #86 (Div. 1 Only) & Codeforces Beta Round #86 (Div. 2 Only)|5|\n|<ul><li>- [ ] Done</li></ul>|152|[Lawnmower](http://codeforces.com/problemset/problem/115/B)|Codeforces||Codeforces Beta Round #87 (Div. 1 Only) & Codeforces Beta Round #87 (Div. 2 Only)|5|\n|<ul><li>- [ ] Done</li></ul>|153|[Lucky Transformation](http://codeforces.com/problemset/problem/121/B)|Codeforces||Codeforces Beta Round #91 (Div. 1 Only) & Codeforces Beta Round #91 (Div. 2 Only)|5|\n|<ul><li>- [ ] Done</li></ul>|154|[Rectangle and Square](http://codeforces.com/problemset/problem/135/B)|Codeforces||Codeforces Beta Round #97 (Div. 1) & Codeforces Beta Round #97 (Div. 2)|5|\n|<ul><li>- [ ] Done</li></ul>|155|[New Year Contest](http://codeforces.com/problemset/problem/140/D)|Codeforces||Codeforces Round #100|5|\n|<ul><li>- [ ] Done</li></ul>|156|[Help General](http://codeforces.com/problemset/problem/142/B)|Codeforces||Codeforces Round #102 (Div. 1) & Codeforces Round #102 (Div. 2)|5|\n|<ul><li>- [ ] Done</li></ul>|157|[Missile Silos](http://codeforces.com/problemset/problem/144/D)|Codeforces||Codeforces Round #103 (Div. 2)|5|\n|<ul><li>- [ ] Done</li></ul>|158|[Lucky Number 2](http://codeforces.com/problemset/problem/145/B)|Codeforces||Codeforces Round #104 (Div. 1) & Codeforces Round #104 (Div. 2)|5|\n|<ul><li>- [ ] Done</li></ul>|159|[Suspects](http://codeforces.com/problemset/problem/156/B)|Codeforces||Codeforces Round #110 (Div. 1) & Codeforces Round #110 (Div. 2)|5|\n|<ul><li>- [ ] Done</li></ul>|160|[Infinite Maze](http://codeforces.com/problemset/problem/196/B)|Codeforces||Codeforces Round #124 (Div. 1) & Codeforces Round #124 (Div. 2)|5|\n|<ul><li>- [ ] Done</li></ul>|161|[Jumping on Walls](http://codeforces.com/problemset/problem/198/B)|Codeforces||Codeforces Round #125 (Div. 1) & Codeforces Round #125 (Div. 2)|5|\n|<ul><li>- [ ] Done</li></ul>|162|[Olympiad](http://codeforces.com/problemset/problem/222/D)|Codeforces||Codeforces Round #137 (Div. 2)|5|\n|<ul><li>- [ ] Done</li></ul>|163|[Cycle in Graph](http://codeforces.com/problemset/problem/263/D)|Codeforces||Codeforces Round #161 (Div. 2)|5|\n|<ul><li>- [ ] Done</li></ul>|164|[Dima and Two Sequences](http://codeforces.com/problemset/problem/272/D)|Codeforces||Codeforces Round #167 (Div. 2) & Codeforces Round #167 (Div. 1)|5|\n|<ul><li>- [ ] Done</li></ul>|165|[Maximum Xor Secondary](http://codeforces.com/problemset/problem/280/B)|Codeforces||Codeforces Round #172 (Div. 1) & Codeforces Round #172 (Div. 2)|5|\n|<ul><li>- [ ] Done</li></ul>|166|[Yaroslav and Time](http://codeforces.com/problemset/problem/301/B)|Codeforces||Codeforces Round #182 (Div. 1) & Codeforces Round #182 (Div. 2)|5|\n|<ul><li>- [ ] Done</li></ul>|167|[Ciel and Duel](http://codeforces.com/problemset/problem/321/B)|Codeforces||Codeforces Round #190 (Div. 1) & Codeforces Round #190 (Div. 2)|5|\n|<ul><li>- [ ] Done</li></ul>|168|[Block Tower](http://codeforces.com/problemset/problem/327/D)|Codeforces||Codeforces Round #191 (Div. 2)|5|\n|<ul><li>- [ ] Done</li></ul>|169|[Chips](http://codeforces.com/problemset/problem/333/B)|Codeforces||Codeforces Round #194 (Div. 1) & Codeforces Round #194 (Div. 2)|5|\n|<ul><li>- [ ] Done</li></ul>|170|[Lucky Common Subsequence](http://codeforces.com/problemset/problem/346/B)|Codeforces||Codeforces Round #201 (Div. 1) & Codeforces Round #201 (Div. 2)|5|\n|<ul><li>- [ ] Done</li></ul>|171|[Jeff and Furik](http://codeforces.com/problemset/problem/351/B)|Codeforces||Codeforces Round #204 (Div. 1) & Codeforces Round #204 (Div. 2)|5|\n|<ul><li>- [ ] Done</li></ul>|172|[Queue](http://codeforces.com/problemset/problem/353/D)|Codeforces||Codeforces Round #205 (Div. 2)|5|\n|<ul><li>- [ ] Done</li></ul>|173|[Xenia and Hamming](http://codeforces.com/problemset/problem/356/B)|Codeforces||Codeforces Round #207 (Div. 1) & Codeforces Round #207 (Div. 2)|5|\n|<ul><li>- [ ] Done</li></ul>|174|[Dima and Hares](http://codeforces.com/problemset/problem/358/D)|Codeforces||Codeforces Round #208 (Div. 2)|5|\n|<ul><li>- [ ] Done</li></ul>|175|[Levko and Array](http://codeforces.com/problemset/problem/360/B)|Codeforces||Codeforces Round #210 (Div. 1) & Codeforces Round #210 (Div. 2)|5|\n|<ul><li>- [ ] Done</li></ul>|176|[Renting Bikes](http://codeforces.com/problemset/problem/363/D)|Codeforces||Codeforces Round #211 (Div. 2)|5|\n|<ul><li>- [ ] Done</li></ul>|177|[Sereja ans Anagrams](http://codeforces.com/problemset/problem/367/B)|Codeforces||Codeforces Round #215 (Div. 1) & Codeforces Round #215 (Div. 2)|5|\n|<ul><li>- [ ] Done</li></ul>|178|[Counting Rectangles is Fun](http://codeforces.com/problemset/problem/372/B)|Codeforces||Codeforces Round #219 (Div. 1) & Codeforces Round #219 (Div. 2)|5|\n|<ul><li>- [ ] Done</li></ul>|179|[Preparing for the Contest](http://codeforces.com/problemset/problem/377/B)|Codeforces||Codeforces Round #222 (Div. 1) & Codeforces Round #222 (Div. 2)|5|\n|<ul><li>- [ ] Done</li></ul>|180|[Fox and Minimal path](http://codeforces.com/problemset/problem/388/B)|Codeforces||Codeforces Round #228 (Div. 1) & Codeforces Round #228 (Div. 2)|5|\n|<ul><li>- [ ] Done</li></ul>|181|[Dima and Bacteria](http://codeforces.com/problemset/problem/400/D)|Codeforces||Codeforces Round #234 (Div. 2)|5|\n|<ul><li>- [ ] Done</li></ul>|182|[Roman and Numbers](http://codeforces.com/problemset/problem/401/D)|Codeforces||Codeforces Round #235 (Div. 2)|5|\n|<ul><li>- [ ] Done</li></ul>|183|[Upgrading Array](http://codeforces.com/problemset/problem/402/D)|Codeforces||Codeforces Round #236 (Div. 2) & Codeforces Round #236 (Div. 1)|5|\n|<ul><li>- [ ] Done</li></ul>|184|[Restore Cube ](http://codeforces.com/problemset/problem/464/B)|Codeforces||Codeforces Round #265 (Div. 1)|5|\n|<ul><li>- [ ] Done</li></ul>|185|[Increase Sequence](http://codeforces.com/problemset/problem/466/D)|Codeforces||Codeforces Round #266 (Div. 2)|5|\n|<ul><li>- [ ] Done</li></ul>|186|[Valid Sets](http://codeforces.com/problemset/problem/486/D)|Codeforces||Codeforces Round #277 (Div. 2)|5|\n|<ul><li>- [ ] Done</li></ul>|187|[Strip](http://codeforces.com/problemset/problem/488/D)|Codeforces||Codeforces Round #278 (Div. 2) & Codeforces Round #278 (Div. 1) & Codeforces Round #278 (Div. 2) & Codeforces Round #278 (Div. 1)|5|\n|<ul><li>- [ ] Done</li></ul>|188|[Chocolate](http://codeforces.com/problemset/problem/490/D)|Codeforces||Codeforces Round #279 (Div. 2)|5|\n|<ul><li>- [ ] Done</li></ul>|189|[Obsessive String](http://codeforces.com/problemset/problem/494/B)|Codeforces||Codeforces Round #282 (Div. 1) & Codeforces Round #282 (Div. 2)|5|\n|<ul><li>- [ ] Done</li></ul>|190|[Misha and Permutations Summation](http://codeforces.com/problemset/problem/501/D)|Codeforces||Codeforces Round #285 (Div. 2) & Codeforces Round #285 (Div. 1)|5|\n|<ul><li>- [ ] Done</li></ul>|191|[R2D2 and Droid Army](http://codeforces.com/problemset/problem/514/D)|Codeforces||Codeforces Round #291 (Div. 2)|5|\n|<ul><li>- [ ] Done</li></ul>|192|[Handshakes](http://codeforces.com/problemset/problem/534/D)|Codeforces||Codeforces Round #298 (Div. 2)|5|\n|<ul><li>- [ ] Done</li></ul>|193|[Kyoya and Permutation](http://codeforces.com/problemset/problem/553/B)|Codeforces||Codeforces Round #309 (Div. 1) & Codeforces Round #309 (Div. 2)|5|\n|<ul><li>- [ ] Done</li></ul>|194|[Vitaly and Cycle](http://codeforces.com/problemset/problem/557/D)|Codeforces||Codeforces Round #311 (Div. 2)|5|\n|<ul><li>- [ ] Done</li></ul>|195|[Symmetric and Transitive](http://codeforces.com/problemset/problem/568/B)|Codeforces||Codeforces Round #315 (Div. 1) & Codeforces Round #315 (Div. 2)|5|\n|<ul><li>- [ ] Done</li></ul>|196|[Minimization](http://codeforces.com/problemset/problem/571/B)|Codeforces||Codeforces Round #317 [AimFund Thanks-Round] (Div. 1) & Codeforces Round #317 [AimFund Thanks-Round] (Div. 2)|5|\n|<ul><li>- [ ] Done</li></ul>|197|[Chip 'n Dale Rescue Rangers](http://codeforces.com/problemset/problem/590/B)|Codeforces||Codeforces Round #327 (Div. 1) & Codeforces Round #327 (Div. 2)|5|\n|<ul><li>- [ ] Done</li></ul>|198|[Super M](http://codeforces.com/problemset/problem/592/D)|Codeforces||Codeforces Round #328 (Div. 2)|5|\n|<ul><li>- [ ] Done</li></ul>|199|[Lipshitz Sequence](http://codeforces.com/problemset/problem/601/B)|Codeforces||Codeforces Round #333 (Div. 1) & Codeforces Round #333 (Div. 2)|5|\n|<ul><li>- [ ] Done</li></ul>|200|[Moodular Arithmetic](http://codeforces.com/problemset/problem/603/B)|Codeforces||Codeforces Round #334 (Div. 1) & Codeforces Round #334 (Div. 2)|5|\n|<ul><li>- [ ] Done</li></ul>|201|[Skills](http://codeforces.com/problemset/problem/613/B)|Codeforces||Codeforces Round #339 (Div. 1) & Codeforces Round #339 (Div. 2)|5|\n|<ul><li>- [ ] Done</li></ul>|202|[Theseus and labyrinth](http://codeforces.com/problemset/problem/676/D)|Codeforces||Codeforces Round #354 (Div. 2)|5|\n|<ul><li>- [ ] Done</li></ul>|203|[Bear and Tower of Cubes](http://codeforces.com/problemset/problem/679/B)|Codeforces||Codeforces Round #356 (Div. 1) & Codeforces Round #356 (Div. 2)|5|\n|<ul><li>- [ ] Done</li></ul>|204|[Alyona and Strings](http://codeforces.com/problemset/problem/682/D)|Codeforces||Codeforces Round #358 (Div. 2)|5|\n|<ul><li>- [ ] Done</li></ul>|205|[Kay and Snowflake](http://codeforces.com/problemset/problem/685/B)|Codeforces||Codeforces Round #359 (Div. 1) & Codeforces Round #359 (Div. 2)|5|\n|<ul><li>- [ ] Done</li></ul>|206|[Friends and Subsequences](http://codeforces.com/problemset/problem/689/D)|Codeforces||Codeforces Round #361 (Div. 2)|5|\n|<ul><li>- [ ] Done</li></ul>|207|[Mishka and Interesting sum](http://codeforces.com/problemset/problem/703/D)|Codeforces||Codeforces Round #365 (Div. 2)|5|\n|<ul><li>- [ ] Done</li></ul>|208|[Persistent Bookcase ](http://codeforces.com/problemset/problem/707/D)|Codeforces||Codeforces Round #368 (Div. 2)|5|\n|<ul><li>- [ ] Done</li></ul>|209|[Complete The Graph](http://codeforces.com/problemset/problem/715/B)|Codeforces||Codeforces Round #372 (Div. 1) & Codeforces Round #372 (Div. 2)|5|\n|<ul><li>- [ ] Done</li></ul>|210|[Maxim and Array](http://codeforces.com/problemset/problem/721/D)|Codeforces||Codeforces Round #374 (Div. 2)|5|\n|<ul><li>- [ ] Done</li></ul>|211|[Leaving Auction](http://codeforces.com/problemset/problem/749/D)|Codeforces||Codeforces Round #388 (Div. 2)|5|\n|<ul><li>- [ ] Done</li></ul>|212|[Winter Is Coming](http://codeforces.com/problemset/problem/747/D)|Codeforces||Codeforces Round #387 (Div. 2)|5|\n|<ul><li>- [ ] Done</li></ul>|213|[Fedor and coupons](http://codeforces.com/problemset/problem/754/D)|Codeforces||Codeforces Round #390 (Div. 2)|5|\n|<ul><li>- [ ] Done</li></ul>|214|[Ability To Convert](http://codeforces.com/problemset/problem/758/D)|Codeforces||Codeforces Round #392 (Div. 2)|5|\n|<ul><li>- [ ] Done</li></ul>|215|[Mahmoud and a Dictionary](http://codeforces.com/problemset/problem/766/D)|Codeforces||Codeforces Round #396 (Div. 2)|5|\n|<ul><li>- [ ] Done</li></ul>|216|[Timofey and rectangles](http://codeforces.com/problemset/problem/763/B)|Codeforces||Codeforces Round #395 (Div. 1) & Codeforces Round #395 (Div. 2)|5|\n|<ul><li>- [ ] Done</li></ul>|217|[Artsem and Saunders](http://codeforces.com/problemset/problem/765/D)|Codeforces||Codeforces Round #397 by Kaspersky Lab and Barcelona Bootcamp (Div. 1 + Div. 2 combined)|5|\n|<ul><li>- [ ] Done</li></ul>|218|[Cartons of milk](http://codeforces.com/problemset/problem/767/D)|Codeforces||Codeforces Round #398 (Div. 2)|5|\n|<ul><li>- [ ] Done</li></ul>|219|[Jon and Orbs](http://codeforces.com/problemset/problem/768/D)|Codeforces||Divide by Zero 2017 and Codeforces Round #399 (Div. 1 + Div. 2, combined)|5|\n|<ul><li>- [ ] Done</li></ul>|220|[Anton and School - 2](http://codeforces.com/problemset/problem/785/D)|Codeforces||Codeforces Round #404 (Div. 2)|5|\n|<ul><li>- [ ] Done</li></ul>|221|[Bear and Tree Jumps](http://codeforces.com/problemset/problem/771/C)|Codeforces||VK Cup 2017 - Round 1|5|\n|<ul><li>- [ ] Done</li></ul>|222|[Weird journey](http://codeforces.com/problemset/problem/788/B)|Codeforces||Codeforces Round #407 (Div. 1) & Codeforces Round #407 (Div. 2)|5|\n|<ul><li>- [ ] Done</li></ul>|223|[Police Stations](http://codeforces.com/problemset/problem/796/D)|Codeforces||Codeforces Round #408 (Div. 2)|5|\n|<ul><li>- [ ] Done</li></ul>|224|[Field expansion](http://codeforces.com/problemset/problem/799/D)|Codeforces||Playrix Codescapes Cup (Codeforces Round #413, rated, Div. 1 + Div. 2)|5|\n|<ul><li>- [ ] Done</li></ul>|225|[Misha, Grisha and Underground](http://codeforces.com/problemset/problem/832/D)|Codeforces||Codeforces Round #425 (Div. 2)|5|\n|<ul><li>- [ ] Done</li></ul>|226|[Winter is here](http://codeforces.com/problemset/problem/839/D)|Codeforces||Codeforces Round #428 (Div. 2)|5|\n|<ul><li>- [ ] Done</li></ul>|227|[Palindromic characteristics](http://codeforces.com/problemset/problem/835/D)|Codeforces||Codeforces Round #427 (Div. 2)|5|\n|<ul><li>- [ ] Done</li></ul>|228|[The Bakery](http://codeforces.com/problemset/problem/833/B)|Codeforces||Codeforces Round #426 (Div. 1) & Codeforces Round #426 (Div. 2)|5|\n|<ul><li>- [ ] Done</li></ul>|229|[An overnight dance in discotheque](http://codeforces.com/problemset/problem/814/D)|Codeforces||Codeforces Round #418 (Div. 2)|5|\n|<ul><li>- [ ] Done</li></ul>|230|[Gluttony](http://codeforces.com/problemset/problem/891/B)|Codeforces||Codeforces Round #446 (Div. 1) & Codeforces Round #446 (Div. 2)|5|\n|<ul><li>- [ ] Done</li></ul>|231|[Mahmoud and Ehab and another array construction task](http://codeforces.com/problemset/problem/959/D)|Codeforces||Codeforces Round #473 (Div. 2)|5|\n|<ul><li>- [ ] Done</li></ul>|232|[Lizards and Basements 2](http://codeforces.com/problemset/problem/6/D)|Codeforces||Codeforces Beta Round #6 (Div. 2 Only)|6|\n|<ul><li>- [ ] Done</li></ul>|233|[LCIS](http://codeforces.com/problemset/problem/10/D)|Codeforces||Codeforces Beta Round #10|6|\n|<ul><li>- [ ] Done</li></ul>|234|[Segments](http://codeforces.com/problemset/problem/22/D)|Codeforces||Codeforces Beta Round #22 (Div. 2 Only)|6|\n|<ul><li>- [ ] Done</li></ul>|235|[Ring Road 2](http://codeforces.com/problemset/problem/27/D)|Codeforces||Codeforces Beta Round #27 (Codeforces format, Div. 2)|6|\n|<ul><li>- [ ] Done</li></ul>|236|[Ant on the Tree](http://codeforces.com/problemset/problem/29/D)|Codeforces||Codeforces Beta Round #29 (Div. 2, Codeforces format)|6|\n|<ul><li>- [ ] Done</li></ul>|237|[Animals](http://codeforces.com/problemset/problem/35/D)|Codeforces||Codeforces Beta Round #35 (Div. 2)|6|\n|<ul><li>- [ ] Done</li></ul>|238|[Permutations](http://codeforces.com/problemset/problem/48/D)|Codeforces||School Personal Contest #3 (Winter Computer School 2010/11) - Codeforces Beta Round #45 (ACM-ICPC Rules)|6|\n|<ul><li>- [ ] Done</li></ul>|239|[Physical Education](http://codeforces.com/problemset/problem/53/D)|Codeforces||Codeforces Beta Round #49 (Div. 2)|6|\n|<ul><li>- [ ] Done</li></ul>|240|[Beautiful numbers](http://codeforces.com/problemset/problem/55/D)|Codeforces||Codeforces Beta Round #51|6|\n|<ul><li>- [ ] Done</li></ul>|241|[Doctor](http://codeforces.com/problemset/problem/83/B)|Codeforces||Codeforces Beta Round #72 (Div. 1 Only) & Codeforces Beta Round #72 (Div. 2 Only)|6|\n|<ul><li>- [ ] Done</li></ul>|242|[Buses](http://codeforces.com/problemset/problem/101/B)|Codeforces||Codeforces Beta Round #79 (Div. 1 Only) & Codeforces Beta Round #79 (Div. 2 Only)|6|\n|<ul><li>- [ ] Done</li></ul>|243|[Lucky Probability](http://codeforces.com/problemset/problem/109/B)|Codeforces||Codeforces Beta Round #84 (Div. 1 Only) & Codeforces Beta Round #84 (Div. 2 Only)|6|\n|<ul><li>- [ ] Done</li></ul>|244|[String](http://codeforces.com/problemset/problem/128/B)|Codeforces||Codeforces Beta Round #94 (Div. 1 Only) & Codeforces Beta Round #94 (Div. 2 Only)|6|\n|<ul><li>- [ ] Done</li></ul>|245|[Palindromes](http://codeforces.com/problemset/problem/137/D)|Codeforces||Codeforces Beta Round #98 (Div. 2)|6|\n|<ul><li>- [ ] Done</li></ul>|246|[Coloring Brackets](http://codeforces.com/problemset/problem/149/D)|Codeforces||Codeforces Round #106 (Div. 2)|6|\n|<ul><li>- [ ] Done</li></ul>|247|[Wizards and Huge Prize](http://codeforces.com/problemset/problem/167/B)|Codeforces||Codeforces Round #114 (Div. 1) & Codeforces Round #114 (Div. 2)|6|\n|<ul><li>- [ ] Done</li></ul>|248|[Mushroom Scientists](http://codeforces.com/problemset/problem/185/B)|Codeforces||Codeforces Round #118 (Div. 1) & Codeforces Round #118 (Div. 2)|6|\n|<ul><li>- [ ] Done</li></ul>|249|[AlgoRace](http://codeforces.com/problemset/problem/187/B)|Codeforces||Codeforces Round #119 (Div. 1) & Codeforces Round #119 (Div. 2)|6|\n|<ul><li>- [ ] Done</li></ul>|250|[Non-Secret Cypher](http://codeforces.com/problemset/problem/190/D)|Codeforces||Codeforces Round #120 (Div. 2)|6|\n|<ul><li>- [ ] Done</li></ul>|251|[Guess That Car!](http://codeforces.com/problemset/problem/201/B)|Codeforces||Codeforces Round #127 (Div. 1) & Codeforces Round #127 (Div. 2)|6|\n|<ul><li>- [ ] Done</li></ul>|252|[Hit Ball](http://codeforces.com/problemset/problem/203/D)|Codeforces||Codeforces Round #128 (Div. 2)|6|\n|<ul><li>- [ ] Done</li></ul>|253|[Numbers](http://codeforces.com/problemset/problem/213/B)|Codeforces||Codeforces Round #131 (Div. 1) & Codeforces Round #131 (Div. 2)|6|\n|<ul><li>- [ ] Done</li></ul>|254|[Hot Days](http://codeforces.com/problemset/problem/215/D)|Codeforces||Codeforces Round #132 (Div. 2)|6|\n|<ul><li>- [ ] Done</li></ul>|255|[Two Strings](http://codeforces.com/problemset/problem/223/B)|Codeforces||Codeforces Round #138 (Div. 1) & Codeforces Round #138 (Div. 2)|6|\n|<ul><li>- [ ] Done</li></ul>|256|[Naughty Stone Piles](http://codeforces.com/problemset/problem/226/B)|Codeforces||Codeforces Round #140 (Div. 1) & Codeforces Round #140 (Div. 2)|6|\n|<ul><li>- [ ] Done</li></ul>|257|[Table](http://codeforces.com/problemset/problem/232/B)|Codeforces||Codeforces Round #144 (Div. 1) & Codeforces Round #144 (Div. 2)|6|\n|<ul><li>- [ ] Done</li></ul>|258|[Cinema](http://codeforces.com/problemset/problem/234/D)|Codeforces||Codeforces Round #145 (Div. 2, ACM-ICPC Rules) & Codeforces Round #145 (Div. 1, ACM-ICPC Rules)|6|\n|<ul><li>- [ ] Done</li></ul>|259|[Let's Play Osu!](http://codeforces.com/problemset/problem/235/B)|Codeforces||Codeforces Round #146 (Div. 1) & Codeforces Round #146 (Div. 2)|6|\n|<ul><li>- [ ] Done</li></ul>|260|[Dispute](http://codeforces.com/problemset/problem/242/D)|Codeforces||Codeforces Round #149 (Div. 2)|6|\n|<ul><li>- [ ] Done</li></ul>|261|[Hydra](http://codeforces.com/problemset/problem/243/B)|Codeforces||Codeforces Round #150 (Div. 1) & Codeforces Round #150 (Div. 2)|6|\n|<ul><li>- [ ] Done</li></ul>|262|[Playing with Permutations](http://codeforces.com/problemset/problem/251/B)|Codeforces||Codeforces Round #153 (Div. 1) & Codeforces Round #153 (Div. 2)|6|\n|<ul><li>- [ ] Done</li></ul>|263|[Mr. Bender and Square](http://codeforces.com/problemset/problem/255/D)|Codeforces||Codeforces Round #156 (Div. 2) & Codeforces Round #156 (Div. 1)|6|\n|<ul><li>- [ ] Done</li></ul>|264|[Little Elephant and Elections](http://codeforces.com/problemset/problem/258/B)|Codeforces||Codeforces Round #157 (Div. 1) & Codeforces Round #157 (Div. 2)|6|\n|<ul><li>- [ ] Done</li></ul>|265|[Sum](http://codeforces.com/problemset/problem/257/D)|Codeforces||Codeforces Round #159 (Div. 2)|6|\n|<ul><li>- [ ] Done</li></ul>|266|[Maxim and Restaurant](http://codeforces.com/problemset/problem/261/B)|Codeforces||Codeforces Round #160 (Div. 1) & Codeforces Round #160 (Div. 2)|6|\n|<ul><li>- [ ] Done</li></ul>|267|[Yet Another Number Game](http://codeforces.com/problemset/problem/282/D)|Codeforces||Codeforces Round #173 (Div. 2)|6|\n|<ul><li>- [ ] Done</li></ul>|268|[Permutation Sum](http://codeforces.com/problemset/problem/285/D)|Codeforces||Codeforces Round #175 (Div. 2)|6|\n|<ul><li>- [ ] Done</li></ul>|269|[Rectangle Puzzle II](http://codeforces.com/problemset/problem/303/B)|Codeforces||Codeforces Round #183 (Div. 1) & Codeforces Round #183 (Div. 2)|6|\n|<ul><li>- [ ] Done</li></ul>|270|[Ilya and Roads](http://codeforces.com/problemset/problem/313/D)|Codeforces||Codeforces Round #186 (Div. 2)|6|\n|<ul><li>- [ ] Done</li></ul>|271|[Sereja and Periods](http://codeforces.com/problemset/problem/314/B)|Codeforces||Codeforces Round #187 (Div. 1) & Codeforces Round #187 (Div. 2)|6|\n|<ul><li>- [ ] Done</li></ul>|272|[Ants](http://codeforces.com/problemset/problem/317/B)|Codeforces||Codeforces Round #188 (Div. 1) & Codeforces Round #188 (Div. 2)|6|\n|<ul><li>- [ ] Done</li></ul>|273|[Apple Tree](http://codeforces.com/problemset/problem/348/B)|Codeforces||Codeforces Round #202 (Div. 1) & Codeforces Round #202 (Div. 2)|6|\n|<ul><li>- [ ] Done</li></ul>|274|[Minesweeper 1D](http://codeforces.com/problemset/problem/404/D)|Codeforces||Codeforces Round #237 (Div. 2)|6|\n|<ul><li>- [ ] Done</li></ul>|275|[Sereja and Table ](http://codeforces.com/problemset/problem/425/B)|Codeforces||Codeforces Round #243 (Div. 1)|6|\n|<ul><li>- [ ] Done</li></ul>|276|[Match & Catch](http://codeforces.com/problemset/problem/427/D)|Codeforces||Codeforces Round #244 (Div. 2)|6|\n|<ul><li>- [ ] Done</li></ul>|277|[Random Task](http://codeforces.com/problemset/problem/431/D)|Codeforces||Codeforces Round #247 (Div. 2)|6|\n|<ul><li>- [ ] Done</li></ul>|278|[Fedor and Essay](http://codeforces.com/problemset/problem/467/D)|Codeforces||Codeforces Round #267 (Div. 2)|6|\n|<ul><li>- [ ] Done</li></ul>|279|[Mr. Kitayuta's Technology](http://codeforces.com/problemset/problem/505/D)|Codeforces||Codeforces Round #286 (Div. 2) & Codeforces Round #286 (Div. 1)|6|\n|<ul><li>- [ ] Done</li></ul>|280|[The Maths Lecture](http://codeforces.com/problemset/problem/507/D)|Codeforces||Codeforces Round #287 (Div. 2)|6|\n|<ul><li>- [ ] Done</li></ul>|281|[Tanya and Password](http://codeforces.com/problemset/problem/508/D)|Codeforces||Codeforces Round #288 (Div. 2)|6|\n|<ul><li>- [ ] Done</li></ul>|282|[Cubes](http://codeforces.com/problemset/problem/520/D)|Codeforces||Codeforces Round #295 (Div. 2) & Codeforces Round #295 (Div. 1)|6|\n|<ul><li>- [ ] Done</li></ul>|283|[Arthur and Walls](http://codeforces.com/problemset/problem/525/D)|Codeforces||Codeforces Round #297 (Div. 2)|6|\n|<ul><li>- [ ] Done</li></ul>|284|[GukiZ and Binary Operations](http://codeforces.com/problemset/problem/551/D)|Codeforces||Codeforces Round #307 (Div. 2)|6|\n|<ul><li>- [ ] Done</li></ul>|285|[Invariance of Tree](http://codeforces.com/problemset/problem/576/B)|Codeforces||Codeforces Round #319 (Div. 1) & Codeforces Round #319 (Div. 2)|6|\n|<ul><li>- [ ] Done</li></ul>|286|[Duff in Beach](http://codeforces.com/problemset/problem/587/B)|Codeforces||Codeforces Round #326 (Div. 1) & Codeforces Round #326 (Div. 2)|6|\n|<ul><li>- [ ] Done</li></ul>|287|[Messenger](http://codeforces.com/problemset/problem/631/D)|Codeforces||Codeforces Round #344 (Div. 2)|6|\n|<ul><li>- [ ] Done</li></ul>|288|[Graph Coloring](http://codeforces.com/problemset/problem/662/B)|Codeforces||CROC 2016 - Final Round [Private, For Onsite Finalists Only]|6|\n|<ul><li>- [ ] Done</li></ul>|289|[World Tour](http://codeforces.com/problemset/problem/666/B)|Codeforces||Codeforces Round #349 (Div. 1) & Codeforces Round #349 (Div. 2)|6|\n|<ul><li>- [ ] Done</li></ul>|290|[Vanya and Treasure](http://codeforces.com/problemset/problem/677/D)|Codeforces||Codeforces Round #355 (Div. 2)|6|\n|<ul><li>- [ ] Done</li></ul>|291|[Gifts by the List](http://codeforces.com/problemset/problem/681/D)|Codeforces||Codeforces Round #357 (Div. 2)|6|\n|<ul><li>- [ ] Done</li></ul>|292|[Memory and Scores](http://codeforces.com/problemset/problem/712/D)|Codeforces||Codeforces Round #370 (Div. 2)|6|\n|<ul><li>- [ ] Done</li></ul>|293|[Searching Rectangles](http://codeforces.com/problemset/problem/713/B)|Codeforces||Codeforces Round #371 (Div. 1) & Codeforces Round #371 (Div. 2)|6|\n|<ul><li>- [ ] Done</li></ul>|294|[Hongcow's Game](http://codeforces.com/problemset/problem/744/B)|Codeforces||Codeforces Round #385 (Div. 1) & Codeforces Round #385 (Div. 2)|6|\n|<ul><li>- [ ] Done</li></ul>|295|[Santa Claus and a Palindrome](http://codeforces.com/problemset/problem/748/D)|Codeforces||Technocup 2017 - Elimination Round 3|6|\n|<ul><li>- [ ] Done</li></ul>|296|[Felicity's Big Secret Revealed](http://codeforces.com/problemset/problem/757/D)|Codeforces||Codecraft-17 and Codeforces Round #391 (Div. 1 + Div. 2, combined)|6|\n|<ul><li>- [ ] Done</li></ul>|297|[Legacy](http://codeforces.com/problemset/problem/786/B)|Codeforces||Codeforces Round #406 (Div. 1) & Codeforces Round #406 (Div. 2)|6|\n|<ul><li>- [ ] Done</li></ul>|298|[Vladik and Favorite Game](http://codeforces.com/problemset/problem/811/D)|Codeforces||Codeforces Round #416 (Div. 2)|6|\n|<ul><li>- [ ] Done</li></ul>|299|[Glad to see you!](http://codeforces.com/problemset/problem/809/B)|Codeforces||Codeforces Round #415 (Div. 1) & Codeforces Round #415 (Div. 2)|6|\n|<ul><li>- [ ] Done</li></ul>|300|[Dynamic Problem Scoring](http://codeforces.com/problemset/problem/773/B)|Codeforces||VK Cup 2017 - Round 3|6|\n|<ul><li>- [ ] Done</li></ul>|301|[Mike and distribution](http://codeforces.com/problemset/problem/798/D)|Codeforces||Codeforces Round #410 (Div. 2)|6|\n|<ul><li>- [ ] Done</li></ul>|302|[Karen and Test](http://codeforces.com/problemset/problem/815/B)|Codeforces||Codeforces Round #419 (Div. 1) & Codeforces Round #419 (Div. 2)|6|\n|<ul><li>- [ ] Done</li></ul>|303|[Leha and another game about graph](http://codeforces.com/problemset/problem/840/B)|Codeforces||Codeforces Round #429 (Div. 1) & Codeforces Round #429 (Div. 2)|6|\n|<ul><li>- [ ] Done</li></ul>|304|[Mister B and PR Shifts](http://codeforces.com/problemset/problem/819/B)|Codeforces||Codeforces Round #421 (Div. 1) & Codeforces Round #421 (Div. 2)|6|\n|<ul><li>- [ ] Done</li></ul>|305|[Merge Sort](http://codeforces.com/problemset/problem/873/D)|Codeforces||Educational Codeforces Round 30|6|\n|<ul><li>- [ ] Done</li></ul>|306|[Follow Traffic Rules](http://codeforces.com/problemset/problem/5/D)|Codeforces||Codeforces Beta Round #5|7|\n|<ul><li>- [ ] Done</li></ul>|307|[Ball](http://codeforces.com/problemset/problem/12/D)|Codeforces||Codeforces Beta Round #12 (Div 2 Only)|7|\n|<ul><li>- [ ] Done</li></ul>|308|[Logging](http://codeforces.com/problemset/problem/16/D)|Codeforces||Codeforces Beta Round #16 (Div. 2 Only)|7|\n|<ul><li>- [ ] Done</li></ul>|309|[Seller Bob](http://codeforces.com/problemset/problem/18/D)|Codeforces||Codeforces Beta Round #18 (Div. 2 Only)|7|\n|<ul><li>- [ ] Done</li></ul>|310|[Points](http://codeforces.com/problemset/problem/19/D)|Codeforces||Codeforces Beta Round #19|7|\n|<ul><li>- [ ] Done</li></ul>|311|[Chocolate](http://codeforces.com/problemset/problem/31/D)|Codeforces||Codeforces Beta Round #31 (Div. 2, Codeforces format)|7|\n|<ul><li>- [ ] Done</li></ul>|312|[Constellation](http://codeforces.com/problemset/problem/32/D)|Codeforces||Codeforces Beta Round #32 (Div. 2, Codeforces format)|7|\n|<ul><li>- [ ] Done</li></ul>|313|[Knights](http://codeforces.com/problemset/problem/33/D)|Codeforces||Codeforces Beta Round #33 (Codeforces format)|7|\n|<ul><li>- [ ] Done</li></ul>|314|[Pawn](http://codeforces.com/problemset/problem/41/D)|Codeforces||Codeforces Beta Round #40 (Div. 2)|7|\n|<ul><li>- [ ] Done</li></ul>|315|[Journey](http://codeforces.com/problemset/problem/43/D)|Codeforces||Codeforces Beta Round #42 (Div. 2)|7|\n|<ul><li>- [ ] Done</li></ul>|316|[Parking Lot](http://codeforces.com/problemset/problem/46/D)|Codeforces||School Personal Contest #2 (Winter Computer School 2010/11) - Codeforces Beta Round #43 (ACM-ICPC Rules)|7|\n|<ul><li>- [ ] Done</li></ul>|317|[Game](http://codeforces.com/problemset/problem/49/D)|Codeforces||Codeforces Beta Round #46 (Div. 2)|7|\n|<ul><li>- [ ] Done</li></ul>|318|[Changing a String](http://codeforces.com/problemset/problem/56/D)|Codeforces||Codeforces Beta Round #52 (Div. 2)|7|\n|<ul><li>- [ ] Done</li></ul>|319|[Dot](http://codeforces.com/problemset/problem/69/D)|Codeforces||Codeforces Beta Round #63 (Div. 2)|7|\n|<ul><li>- [ ] Done</li></ul>|320|[Big Maximum Sum](http://codeforces.com/problemset/problem/75/D)|Codeforces||Codeforces Beta Round #67 (Div. 2)|7|\n|<ul><li>- [ ] Done</li></ul>|321|[Vasya and Types](http://codeforces.com/problemset/problem/87/B)|Codeforces||Codeforces Beta Round #73 (Div. 1 Only) & Codeforces Beta Round #73 (Div. 2 Only)|7|\n|<ul><li>- [ ] Done</li></ul>|322|[End of Exams](http://codeforces.com/problemset/problem/93/B)|Codeforces||Codeforces Beta Round #76 (Div. 1 Only) & Codeforces Beta Round #76 (Div. 2 Only)|7|\n|<ul><li>- [ ] Done</li></ul>|323|[Russian Roulette](http://codeforces.com/problemset/problem/103/C)|Codeforces||Codeforces Beta Round #80 (Div. 1 Only) & Codeforces Beta Round #80 (Div. 2 Only)|7|\n|<ul><li>- [ ] Done</li></ul>|324|[Treasure Island](http://codeforces.com/problemset/problem/106/D)|Codeforces||Codeforces Beta Round #82 (Div. 2)|7|\n|<ul><li>- [ ] Done</li></ul>|325|[Squares](http://codeforces.com/problemset/problem/123/B)|Codeforces||Codeforces Beta Round #92 (Div. 1 Only) & Codeforces Beta Round #92 (Div. 2 Only)|7|\n|<ul><li>- [ ] Done</li></ul>|326|[Digits Permutations](http://codeforces.com/problemset/problem/138/B)|Codeforces||Codeforces Beta Round #99 (Div. 1) & Codeforces Beta Round #99 (Div. 2)|7|\n|<ul><li>- [ ] Done</li></ul>|327|[Edges in MST](http://codeforces.com/problemset/problem/160/D)|Codeforces||Codeforces Round #111 (Div. 2)|7|\n|<ul><li>- [ ] Done</li></ul>|328|[Beard Graph](http://codeforces.com/problemset/problem/165/D)|Codeforces||Codeforces Round #112 (Div. 2)|7|\n|<ul><li>- [ ] Done</li></ul>|329|[Demonstration](http://codeforces.com/problemset/problem/191/B)|Codeforces||Codeforces Round #121 (Div. 1) & Codeforces Round #121 (Div. 2)|7|\n|<ul><li>- [ ] Done</li></ul>|330|[Xor](http://codeforces.com/problemset/problem/193/B)|Codeforces||Codeforces Round #122 (Div. 1) & Codeforces Round #122 (Div. 2)|7|\n|<ul><li>- [ ] Done</li></ul>|331|[Analyzing Polyline](http://codeforces.com/problemset/problem/195/D)|Codeforces||Codeforces Round #123 (Div. 2)|7|\n|<ul><li>- [ ] Done</li></ul>|332|[Programming Language](http://codeforces.com/problemset/problem/200/D)|Codeforces||Codeforces Round #126 (Div. 2)|7|\n|<ul><li>- [ ] Done</li></ul>|333|[Spider's Web](http://codeforces.com/problemset/problem/216/D)|Codeforces||Codeforces Round #133 (Div. 2)|7|\n|<ul><li>- [ ] Done</li></ul>|334|[Blackboard Fibonacci](http://codeforces.com/problemset/problem/217/B)|Codeforces||Codeforces Round #134 (Div. 1) & Codeforces Round #134 (Div. 2)|7|\n|<ul><li>- [ ] Done</li></ul>|335|[Snake](http://codeforces.com/problemset/problem/225/D)|Codeforces||Codeforces Round #139 (Div. 2)|7|\n|<ul><li>- [ ] Done</li></ul>|336|[Boring Partition](http://codeforces.com/problemset/problem/238/B)|Codeforces||Codeforces Round #148 (Div. 1) & Codeforces Round #148 (Div. 2)|7|\n|<ul><li>- [ ] Done</li></ul>|337|[Table with Letters - 2](http://codeforces.com/problemset/problem/253/D)|Codeforces||Codeforces Round #154 (Div. 2)|7|\n|<ul><li>- [ ] Done</li></ul>|338|[Black and White Tree](http://codeforces.com/problemset/problem/260/D)|Codeforces||Codeforces Round #158 (Div. 2)|7|\n|<ul><li>- [ ] Done</li></ul>|339|[Set of Points](http://codeforces.com/problemset/problem/277/B)|Codeforces||Codeforces Round #170 (Div. 1) & Codeforces Round #170 (Div. 2)|7|\n|<ul><li>- [ ] Done</li></ul>|340|[Shifting](http://codeforces.com/problemset/problem/286/B)|Codeforces||Codeforces Round #176 (Div. 1) & Codeforces Round #176 (Div. 2)|7|\n|<ul><li>- [ ] Done</li></ul>|341|[Cats Transport](http://codeforces.com/problemset/problem/311/B)|Codeforces||Codeforces Round #185 (Div. 1) & Codeforces Round #185 (Div. 2)|7|\n|<ul><li>- [ ] Done</li></ul>|342|[Vasily the Bear and Beautiful Strings](http://codeforces.com/problemset/problem/336/D)|Codeforces||Codeforces Round #195 (Div. 2)|7|\n|<ul><li>- [ ] Done</li></ul>|343|[Fools and Foolproof Roads](http://codeforces.com/problemset/problem/362/D)|Codeforces||Codeforces Round #212 (Div. 2)|7|\n|<ul><li>- [ ] Done</li></ul>|344|[Free Market](http://codeforces.com/problemset/problem/364/B)|Codeforces||Codeforces Round #213 (Div. 1) & Codeforces Round #213 (Div. 2)|7|\n|<ul><li>- [ ] Done</li></ul>|345|[Dima and Trap Graph](http://codeforces.com/problemset/problem/366/D)|Codeforces||Codeforces Round #214 (Div. 2)|7|\n|<ul><li>- [ ] Done</li></ul>|346|[Valera and Fools](http://codeforces.com/problemset/problem/369/D)|Codeforces||Codeforces Round #216 (Div. 2)|7|\n|<ul><li>- [ ] Done</li></ul>|347|[Inna and Sequence ](http://codeforces.com/problemset/problem/374/D)|Codeforces||Codeforces Round #220 (Div. 2)|7|\n|<ul><li>- [ ] Done</li></ul>|348|[Ksenia and Pawns](http://codeforces.com/problemset/problem/382/D)|Codeforces||Codeforces Round #224 (Div. 2)|7|\n|<ul><li>- [ ] Done</li></ul>|349|[On Sum of Fractions](http://codeforces.com/problemset/problem/396/B)|Codeforces||Codeforces Round #232 (Div. 1) & Codeforces Round #232 (Div. 2)|7|\n|<ul><li>- [ ] Done</li></ul>|350|[Painting The Wall](http://codeforces.com/problemset/problem/398/B)|Codeforces||Codeforces Round #233 (Div. 1) & Codeforces Round #233 (Div. 2)|7|\n|<ul><li>- [ ] Done</li></ul>|351|[Population Size](http://codeforces.com/problemset/problem/416/D)|Codeforces||Codeforces Round #241 (Div. 2)|7|\n|<ul><li>- [ ] Done</li></ul>|352|[Nanami's Digital Board](http://codeforces.com/problemset/problem/433/D)|Codeforces||Codeforces Round #248 (Div. 2) & Codeforces Round #248 (Div. 1)|7|\n|<ul><li>- [ ] Done</li></ul>|353|[Special Grid](http://codeforces.com/problemset/problem/435/D)|Codeforces||Codeforces Round #249 (Div. 2)|7|\n|<ul><li>- [ ] Done</li></ul>|354|[Valera and Swaps](http://codeforces.com/problemset/problem/441/D)|Codeforces||Codeforces Round #252 (Div. 2)|7|\n|<ul><li>- [ ] Done</li></ul>|355|[DZY Loves FFT](http://codeforces.com/problemset/problem/444/B)|Codeforces||Codeforces Round #254 (Div. 1) & Codeforces Round #254 (Div. 2)|7|\n|<ul><li>- [ ] Done</li></ul>|356|[Little Victor and Set](http://codeforces.com/problemset/problem/460/D)|Codeforces||Codeforces Round #262 (Div. 2)|7|\n|<ul><li>- [ ] Done</li></ul>|357|[Name That Tune](http://codeforces.com/problemset/problem/498/B)|Codeforces||Codeforces Round #284 (Div. 1) & Codeforces Round #284 (Div. 2)|7|\n|<ul><li>- [ ] Done</li></ul>|358|[Restoring Numbers](http://codeforces.com/problemset/problem/509/D)|Codeforces||Codeforces Round #289 (Div. 2, ACM ICPC Rules)|7|\n|<ul><li>- [ ] Done</li></ul>|359|[Guess Your Way Out! II](http://codeforces.com/problemset/problem/558/D)|Codeforces||Codeforces Round #312 (Div. 2)|7|\n|<ul><li>- [ ] Done</li></ul>|360|[Happy Tree Party](http://codeforces.com/problemset/problem/593/D)|Codeforces||Codeforces Round #329 (Div. 2)|7|\n|<ul><li>- [ ] Done</li></ul>|361|[Vika and Segments](http://codeforces.com/problemset/problem/610/D)|Codeforces||Codeforces Round #337 (Div. 2)|7|\n|<ul><li>- [ ] Done</li></ul>|362|[Rat Kwesh and Cheese](http://codeforces.com/problemset/problem/621/D)|Codeforces||Codeforces Round #341 (Div. 2)|7|\n|<ul><li>- [ ] Done</li></ul>|363|[Ant Man](http://codeforces.com/problemset/problem/704/B)|Codeforces||Codeforces Round #366 (Div. 1) & Codeforces Round #366 (Div. 2)|7|\n|<ul><li>- [ ] Done</li></ul>|364|[80-th Level Archeology](http://codeforces.com/problemset/problem/731/D)|Codeforces||Codeforces Round #376 (Div. 2)|7|\n|<ul><li>- [ ] Done</li></ul>|365|[Okabe and City](http://codeforces.com/problemset/problem/821/D)|Codeforces||Codeforces Round #420 (Div. 2)|7|\n|<ul><li>- [ ] Done</li></ul>|366|[Something with XOR Queries](http://codeforces.com/problemset/problem/870/D)|Codeforces||Technocup 2018 - Elimination Round 2|7|\n|<ul><li>- [ ] Done</li></ul>|367|[Huge Strings](http://codeforces.com/problemset/problem/868/D)|Codeforces||Codeforces Round #438 by Sberbank and Barcelona Bootcamp (Div. 1 + Div. 2 combined)|7|\n|<ul><li>- [ ] Done</li></ul>|368|[Two Friends](http://codeforces.com/problemset/problem/8/D)|Codeforces||Codeforces Beta Round #8|8|\n|<ul><li>- [ ] Done</li></ul>|369|[Triangles](http://codeforces.com/problemset/problem/13/D)|Codeforces||Codeforces Beta Round #13|8|\n|<ul><li>- [ ] Done</li></ul>|370|[Notepad](http://codeforces.com/problemset/problem/17/D)|Codeforces||Codeforces Beta Round #17|8|\n|<ul><li>- [ ] Done</li></ul>|371|[Traveling Graph](http://codeforces.com/problemset/problem/21/D)|Codeforces||Codeforces Alpha Round #21 (Codeforces format)|8|\n|<ul><li>- [ ] Done</li></ul>|372|[Broken robot](http://codeforces.com/problemset/problem/24/D)|Codeforces||Codeforces Beta Round #24|8|\n|<ul><li>- [ ] Done</li></ul>|373|[Tickets](http://codeforces.com/problemset/problem/26/D)|Codeforces||Codeforces Beta Round #26 (Codeforces format)|8|\n|<ul><li>- [ ] Done</li></ul>|374|[Don't fear, DravDe is kind](http://codeforces.com/problemset/problem/28/D)|Codeforces||Codeforces Beta Round #28 (Codeforces format)|8|\n|<ul><li>- [ ] Done</li></ul>|375|[New Game with a Chess Piece](http://codeforces.com/problemset/problem/36/D)|Codeforces||Codeforces Beta Round #36|8|\n|<ul><li>- [ ] Done</li></ul>|376|[Vasya the Architect](http://codeforces.com/problemset/problem/38/D)|Codeforces||School Personal Contest #1 (Winter Computer School 2010/11) - Codeforces Beta Round #38 (ACM-ICPC Rules)|8|\n|<ul><li>- [ ] Done</li></ul>|377|[Safe](http://codeforces.com/problemset/problem/47/D)|Codeforces||Codeforces Beta Round #44 (Div. 2)|8|\n|<ul><li>- [ ] Done</li></ul>|378|[Bombing](http://codeforces.com/problemset/problem/50/D)|Codeforces||Codeforces Beta Round #47|8|\n|<ul><li>- [ ] Done</li></ul>|379|[Calendar](http://codeforces.com/problemset/problem/58/D)|Codeforces||Codeforces Beta Round #54 (Div. 2)|8|\n|<ul><li>- [ ] Done</li></ul>|380|[Team Arrangement](http://codeforces.com/problemset/problem/59/D)|Codeforces||Codeforces Beta Round #55 (Div. 2)|8|\n|<ul><li>- [ ] Done</li></ul>|381|[Dividing Island](http://codeforces.com/problemset/problem/63/D)|Codeforces||Codeforces Beta Round #59 (Div. 2)|8|\n|<ul><li>- [ ] Done</li></ul>|382|[Professor's task](http://codeforces.com/problemset/problem/70/D)|Codeforces||Codeforces Beta Round #64|8|\n|<ul><li>- [ ] Done</li></ul>|383|[FreeDiv](http://codeforces.com/problemset/problem/73/D)|Codeforces||Codeforces Beta Round #66|8|\n|<ul><li>- [ ] Done</li></ul>|384|[Password](http://codeforces.com/problemset/problem/79/D)|Codeforces||Codeforces Beta Round #71|8|\n|<ul><li>- [ ] Done</li></ul>|385|[Widget Library](http://codeforces.com/problemset/problem/89/B)|Codeforces||Codeforces Beta Round #74 (Div. 1 Only) & Codeforces Beta Round #74 (Div. 2 Only)|8|\n|<ul><li>- [ ] Done</li></ul>|386|[Piet](http://codeforces.com/problemset/problem/132/B)|Codeforces||Codeforces Beta Round #96 (Div. 1) & Codeforces Beta Round #96 (Div. 2)|8|\n|<ul><li>- [ ] Done</li></ul>|387|[Take-off Ramps](http://codeforces.com/problemset/problem/141/D)|Codeforces||Codeforces Round #101 (Div. 2)|8|\n|<ul><li>- [ ] Done</li></ul>|388|[Name](http://codeforces.com/problemset/problem/180/D)|Codeforces||Codeforces Round #116 (Div. 2, ACM-ICPC Rules)|8|\n|<ul><li>- [ ] Done</li></ul>|389|[T-decomposition](http://codeforces.com/problemset/problem/237/D)|Codeforces||Codeforces Round #147 (Div. 2)|8|\n|<ul><li>- [ ] Done</li></ul>|390|[Sweets for Everyone!](http://codeforces.com/problemset/problem/248/D)|Codeforces||Codeforces Round #152 (Div. 2) & Codeforces Round #152 (Div. 1)|8|\n|<ul><li>- [ ] Done</li></ul>|391|[BerDonalds](http://codeforces.com/problemset/problem/266/D)|Codeforces||Codeforces Round #163 (Div. 2)|8|\n|<ul><li>- [ ] Done</li></ul>|392|[The Minimum Number of Variables](http://codeforces.com/problemset/problem/279/D)|Codeforces||Codeforces Round #171 (Div. 2)|8|\n|<ul><li>- [ ] Done</li></ul>|393|[Painting Square](http://codeforces.com/problemset/problem/300/D)|Codeforces||Codeforces Round #181 (Div. 2)|8|\n|<ul><li>- [ ] Done</li></ul>|394|[Olya and Graph](http://codeforces.com/problemset/problem/305/D)|Codeforces||Codeforces Round #184 (Div. 2)|8|\n|<ul><li>- [ ] Done</li></ul>|395|[Xenia and Dominoes](http://codeforces.com/problemset/problem/342/D)|Codeforces||Codeforces Round #199 (Div. 2)|8|\n|<ul><li>- [ ] Done</li></ul>|396|[Broken Monitor](http://codeforces.com/problemset/problem/370/D)|Codeforces||Codeforces Round #217 (Div. 2)|8|\n|<ul><li>- [ ] Done</li></ul>|397|[Sereja and Tree](http://codeforces.com/problemset/problem/380/B)|Codeforces||Codeforces Round #223 (Div. 1) & Codeforces Round #223 (Div. 2)|8|\n|<ul><li>- [ ] Done</li></ul>|398|[Volcanoes](http://codeforces.com/problemset/problem/383/B)|Codeforces||Codeforces Round #225 (Div. 1) & Codeforces Round #225 (Div. 2)|8|\n|<ul><li>- [ ] Done</li></ul>|399|[Bear and Floodlight](http://codeforces.com/problemset/problem/385/D)|Codeforces||Codeforces Round #226 (Div. 2)|8|\n|<ul><li>- [ ] Done</li></ul>|400|[George and Interesting Graph](http://codeforces.com/problemset/problem/387/D)|Codeforces||Codeforces Round #227 (Div. 2)|8|\n|<ul><li>- [ ] Done</li></ul>|401|[Inna and Sweet Matrix](http://codeforces.com/problemset/problem/390/D)|Codeforces||Codeforces Round #229 (Div. 2)|8|\n|<ul><li>- [ ] Done</li></ul>|402|[Tower of Hanoi](http://codeforces.com/problemset/problem/392/B)|Codeforces||Codeforces Round #230 (Div. 1) & Codeforces Round #230 (Div. 2)|8|\n|<ul><li>- [ ] Done</li></ul>|403|[Biathlon Track](http://codeforces.com/problemset/problem/424/D)|Codeforces||Codeforces Round #242 (Div. 2)|8|\n|<ul><li>- [ ] Done</li></ul>|404|[Max and Bike](http://codeforces.com/problemset/problem/594/B)|Codeforces||Codeforces Round #330 (Div. 1) & Codeforces Round #330 (Div. 2)|8|\n|<ul><li>- [ ] Done</li></ul>|405|[Wilbur and Trees](http://codeforces.com/problemset/problem/596/D)|Codeforces||Codeforces Round #331 (Div. 2)|8|\n|<ul><li>- [ ] Done</li></ul>|406|[Finals in arithmetic](http://codeforces.com/problemset/problem/625/D)|Codeforces||Codeforces Round #342 (Div. 2)|8|\n|<ul><li>- [ ] Done</li></ul>|407|[Labelling Cities](http://codeforces.com/problemset/problem/794/D)|Codeforces||Tinkoff Challenge - Final Round (Codeforces Round #414, rated, Div. 1 + Div. 2)|8|\n|<ul><li>- [ ] Done</li></ul>|408|[Two Melodies](http://codeforces.com/problemset/problem/813/D)|Codeforces||Educational Codeforces Round 22|8|\n|<ul><li>- [ ] Done</li></ul>|409|[Map](http://codeforces.com/problemset/problem/15/D)|Codeforces||Codeforces Beta Round #15|9|\n|<ul><li>- [ ] Done</li></ul>|410|[Tetragon](http://codeforces.com/problemset/problem/23/D)|Codeforces||Codeforces Beta Round #23|9|\n|<ul><li>- [ ] Done</li></ul>|411|[King's Problem?](http://codeforces.com/problemset/problem/30/D)|Codeforces||Codeforces Beta Round #30 (Codeforces format)|9|\n|<ul><li>- [ ] Done</li></ul>|412|[Lesson Timetable](http://codeforces.com/problemset/problem/37/D)|Codeforces||Codeforces Beta Round #37|9|\n|<ul><li>- [ ] Done</li></ul>|413|[Strange town](http://codeforces.com/problemset/problem/42/D)|Codeforces||Codeforces Beta Round #41|9|\n|<ul><li>- [ ] Done</li></ul>|414|[Geometrical problem](http://codeforces.com/problemset/problem/51/D)|Codeforces||Codeforces Beta Round #48|9|\n|<ul><li>- [ ] Done</li></ul>|415|[Writing a Song](http://codeforces.com/problemset/problem/54/D)|Codeforces||Codeforces Beta Round #50|9|\n|<ul><li>- [ ] Done</li></ul>|416|[Journey](http://codeforces.com/problemset/problem/57/D)|Codeforces||Codeforces Beta Round #53|9|\n|<ul><li>- [ ] Done</li></ul>|417|[Savior](http://codeforces.com/problemset/problem/60/D)|Codeforces||Codeforces Beta Round #56|9|\n|<ul><li>- [ ] Done</li></ul>|418|[Wormhouse](http://codeforces.com/problemset/problem/62/D)|Codeforces||Codeforces Beta Round #58|9|\n|<ul><li>- [ ] Done</li></ul>|419|[Harry Potter and the Sorting Hat](http://codeforces.com/problemset/problem/65/D)|Codeforces||Codeforces Beta Round #60|9|\n|<ul><li>- [ ] Done</li></ul>|420|[Half-decay tree](http://codeforces.com/problemset/problem/68/D)|Codeforces||Codeforces Beta Round #62|9|\n|<ul><li>- [ ] Done</li></ul>|421|[Solitaire](http://codeforces.com/problemset/problem/71/D)|Codeforces||Codeforces Beta Round #65 (Div. 2)|9|\n|<ul><li>- [ ] Done</li></ul>|422|[Hanger](http://codeforces.com/problemset/problem/74/D)|Codeforces||Codeforces Beta Round #68|9|\n|<ul><li>- [ ] Done</li></ul>|423|[Archer's Shot](http://codeforces.com/problemset/problem/78/D)|Codeforces||Codeforces Beta Round #70 (Div. 2)|9|\n|<ul><li>- [ ] Done</li></ul>|424|[Not Quick Transformation](http://codeforces.com/problemset/problem/117/D)|Codeforces||Codeforces Beta Round #88|9|\n|<ul><li>- [ ] Done</li></ul>|425|[String Transformation](http://codeforces.com/problemset/problem/119/D)|Codeforces||Codeforces Beta Round #90|9|\n|<ul><li>- [ ] Done</li></ul>|426|[Frames](http://codeforces.com/problemset/problem/152/D)|Codeforces||Codeforces Round #108 (Div. 2)|9|\n|<ul><li>- [ ] Done</li></ul>|427|[Shoe Store](http://codeforces.com/problemset/problem/166/D)|Codeforces||Codeforces Round #113 (Div. 2)|9|\n|<ul><li>- [ ] Done</li></ul>|428|[Plane of Tanks: Duel](http://codeforces.com/problemset/problem/175/D)|Codeforces||Codeforces Round #115|9|\n|<ul><li>- [ ] Done</li></ul>|429|[Zigzag](http://codeforces.com/problemset/problem/228/D)|Codeforces||Codeforces Round #141 (Div. 2)|9|\n|<ul><li>- [ ] Done</li></ul>|430|[Rats](http://codeforces.com/problemset/problem/254/D)|Codeforces||Codeforces Round #155 (Div. 2)|9|\n|<ul><li>- [ ] Done</li></ul>|431|[Wall Bars](http://codeforces.com/problemset/problem/268/D)|Codeforces||Codeforces Round #164 (Div. 2)|9|\n|<ul><li>- [ ] Done</li></ul>|432|[Shaass and Painter Robot](http://codeforces.com/problemset/problem/294/D)|Codeforces||Codeforces Round #178 (Div. 2)|9|\n|<ul><li>- [ ] Done</li></ul>|433|[Theft of Blueprints](http://codeforces.com/problemset/problem/332/D)|Codeforces||Codeforces Round #193 (Div. 2)|9|\n|<ul><li>- [ ] Done</li></ul>|434|[Game with Strings](http://codeforces.com/problemset/problem/354/B)|Codeforces||Codeforces Round #206 (Div. 1) & Codeforces Round #206 (Div. 2)|9|\n|<ul><li>- [ ] Done</li></ul>|435|[Physical Education and Buns](http://codeforces.com/problemset/problem/394/D)|Codeforces||Codeforces Round #231 (Div. 2)|9|\n|<ul><li>- [ ] Done</li></ul>|436|[Sagheer and Kindergarten](http://codeforces.com/problemset/problem/812/D)|Codeforces||Codeforces Round #417 (Div. 2)|9|\n|<ul><li>- [ ] Done</li></ul>|437|[Interesting Sequence](http://codeforces.com/problemset/problem/40/D)|Codeforces||Codeforces Beta Round #39|10|\n|<ul><li>- [ ] Done</li></ul>|438|[Help King](http://codeforces.com/problemset/problem/98/B)|Codeforces||Codeforces Beta Round #78 (Div. 1 Only) & Codeforces Beta Round #78 (Div. 2 Only)|10|\n|<ul><li>- [ ] Done</li></ul>|439|[Entertaining Geodetics](http://codeforces.com/problemset/problem/105/D)|Codeforces||Codeforces Beta Round #81|10|\n|<ul><li>- [ ] Done</li></ul>|440|[Looking for Owls](http://codeforces.com/problemset/problem/350/D)|Codeforces||Codeforces Round #203 (Div. 2)|10|\n|<ul><li>- [ ] Done</li></ul>|441|[Number of Binominal Coefficients](http://codeforces.com/problemset/problem/582/D)|Codeforces||Codeforces Round #323 (Div. 1)|10|\n|<ul><li>- [ ] Done</li></ul>|442|[Guards In The Storehouse](http://codeforces.com/problemset/problem/845/F)|Codeforces||Educational Codeforces Round 27|10|\n|<ul><li>- [ ] Done</li></ul>|443|[The Overdosing Ubiquity](http://codeforces.com/problemset/problem/869/D)|Codeforces||Codeforces Round #439 (Div. 2)|10|\n"
  },
  {
    "path": "categories/012. Codeforces_Div._2_-_E_Problems/README.md",
    "content": "# 012. Codeforces_Div._2_-_E_Problems\n\n\n| Checkbox | ID | Problem Name|Online Judge|Contest|Difficulty Level|\n|:---:|:---:|:---:|:---:|:---:|:---:|\n|<ul><li>- [ ] Done</li></ul>|1|[Tetrahedron](http://codeforces.com/problemset/problem/166/E)|Codeforces|Codeforces Round #113 (Div. 2)|1|\n|<ul><li>- [ ] Done</li></ul>|2|[Expression](http://codeforces.com/problemset/problem/479/A)|Codeforces|Codeforces Round #274 (Div. 2)|1|\n|<ul><li>- [ ] Done</li></ul>|3|[Sereja and Brackets](http://codeforces.com/problemset/problem/380/C)|Codeforces|Codeforces Round #223 (Div. 1) & Codeforces Round #223 (Div. 2)|3|\n|<ul><li>- [ ] Done</li></ul>|4|[New Reform](http://codeforces.com/problemset/problem/659/E)|Codeforces|Codeforces Round #346 (Div. 2)|3|\n|<ul><li>- [ ] Done</li></ul>|5|[Enemy is weak](http://codeforces.com/problemset/problem/61/E)|Codeforces|Codeforces Beta Round #57 (Div. 2)|4|\n|<ul><li>- [ ] Done</li></ul>|6|[Fools and Roads](http://codeforces.com/problemset/problem/191/C)|Codeforces|Codeforces Round #121 (Div. 1) & Codeforces Round #121 (Div. 2)|4|\n|<ul><li>- [ ] Done</li></ul>|7|[XOR on Segment](http://codeforces.com/problemset/problem/242/E)|Codeforces|Codeforces Round #149 (Div. 2)|4|\n|<ul><li>- [ ] Done</li></ul>|8|[Ciel the Commander](http://codeforces.com/problemset/problem/321/C)|Codeforces|Codeforces Round #190 (Div. 1) & Codeforces Round #190 (Div. 2)|4|\n|<ul><li>- [ ] Done</li></ul>|9|[Xenia and Tree](http://codeforces.com/problemset/problem/342/E)|Codeforces|Codeforces Round #199 (Div. 2)|4|\n|<ul><li>- [ ] Done</li></ul>|10|[Propagating tree](http://codeforces.com/problemset/problem/383/C)|Codeforces|Codeforces Round #225 (Div. 1) & Codeforces Round #225 (Div. 2)|4|\n|<ul><li>- [ ] Done</li></ul>|11|[Civilization](http://codeforces.com/problemset/problem/455/C)|Codeforces|Codeforces Round #260 (Div. 1) & Codeforces Round #260 (Div. 2)|4|\n|<ul><li>- [ ] Done</li></ul>|12|[Pashmak and Graph](http://codeforces.com/problemset/problem/459/E)|Codeforces|Codeforces Round #261 (Div. 2)|4|\n|<ul><li>- [ ] Done</li></ul>|13|[Riding in a Lift](http://codeforces.com/problemset/problem/479/E)|Codeforces|Codeforces Round #274 (Div. 2) & Codeforces Round #274 (Div. 1)|4|\n|<ul><li>- [ ] Done</li></ul>|14|[A and B and Lecture Rooms](http://codeforces.com/problemset/problem/519/E)|Codeforces|Codeforces Round #294 (Div. 2)|4|\n|<ul><li>- [ ] Done</li></ul>|15|[Paths and Trees](http://codeforces.com/problemset/problem/545/E)|Codeforces|Codeforces Round #303 (Div. 2)|4|\n|<ul><li>- [ ] Done</li></ul>|16|[Gerald and Giant Chess](http://codeforces.com/problemset/problem/559/C)|Codeforces|Codeforces Round #313 (Div. 1) & Codeforces Round #313 (Div. 2)|4|\n|<ul><li>- [ ] Done</li></ul>|17|[Weakness and Poorness](http://codeforces.com/problemset/problem/578/C)|Codeforces|Codeforces Round #320 (Div. 1) [Bayan Thanks-Round] & Codeforces Round #320 (Div. 2) [Bayan Thanks-Round]|4|\n|<ul><li>- [ ] Done</li></ul>|18|[XOR and Favorite Number](http://codeforces.com/problemset/problem/617/E)|Codeforces|Codeforces Round #340 (Div. 2)|4|\n|<ul><li>- [ ] Done</li></ul>|19|[Correct Bracket Sequence Editor](http://codeforces.com/problemset/problem/670/E)|Codeforces|Codeforces Round #350 (Div. 2)|4|\n|<ul><li>- [ ] Done</li></ul>|20|[The Values You Can Make](http://codeforces.com/problemset/problem/687/C)|Codeforces|Codeforces Round #360 (Div. 1) & Codeforces Round #360 (Div. 2)|4|\n|<ul><li>- [ ] Done</li></ul>|21|[Connecting Universities](http://codeforces.com/problemset/problem/700/B)|Codeforces|Codeforces Round #364 (Div. 1) & Codeforces Round #364 (Div. 2)|4|\n|<ul><li>- [ ] Done</li></ul>|22|[Fire](http://codeforces.com/problemset/problem/864/E)|Codeforces|Codeforces Round #436 (Div. 2)|4|\n|<ul><li>- [ ] Done</li></ul>|23|[Squares and not squares](http://codeforces.com/problemset/problem/898/E)|Codeforces|Codeforces Round #451 (Div. 2)|4|\n|<ul><li>- [ ] Done</li></ul>|24|[Exposition](http://codeforces.com/problemset/problem/6/E)|Codeforces|Codeforces Beta Round #6 (Div. 2 Only)|5|\n|<ul><li>- [ ] Done</li></ul>|25|[Number With The Given Amount Of Divisors](http://codeforces.com/problemset/problem/27/E)|Codeforces|Codeforces Beta Round #27 (Codeforces format, Div. 2)|5|\n|<ul><li>- [ ] Done</li></ul>|26|[Subsegments](http://codeforces.com/problemset/problem/69/E)|Codeforces|Codeforces Beta Round #63 (Div. 2)|5|\n|<ul><li>- [ ] Done</li></ul>|27|[Games with Rectangle](http://codeforces.com/problemset/problem/128/C)|Codeforces|Codeforces Beta Round #94 (Div. 1 Only) & Codeforces Beta Round #94 (Div. 2 Only)|5|\n|<ul><li>- [ ] Done</li></ul>|28|[Logo Turtle](http://codeforces.com/problemset/problem/132/C)|Codeforces|Codeforces Beta Round #96 (Div. 1) & Codeforces Beta Round #96 (Div. 2)|5|\n|<ul><li>- [ ] Done</li></ul>|29|[Porcelain](http://codeforces.com/problemset/problem/148/E)|Codeforces|Codeforces Round #105 (Div. 2)|5|\n|<ul><li>- [ ] Done</li></ul>|30|[Compatible Numbers](http://codeforces.com/problemset/problem/165/E)|Codeforces|Codeforces Round #112 (Div. 2)|5|\n|<ul><li>- [ ] Done</li></ul>|31|[Blood Cousins](http://codeforces.com/problemset/problem/208/E)|Codeforces|Codeforces Round #130 (Div. 2)|5|\n|<ul><li>- [ ] Done</li></ul>|32|[Choosing Balls](http://codeforces.com/problemset/problem/264/C)|Codeforces|Codeforces Round #162 (Div. 1) & Codeforces Round #162 (Div. 2)|5|\n|<ul><li>- [ ] Done</li></ul>|33|[Sausage Maximization](http://codeforces.com/problemset/problem/282/E)|Codeforces|Codeforces Round #173 (Div. 2)|5|\n|<ul><li>- [ ] Done</li></ul>|34|[Polo the Penguin and XOR operation](http://codeforces.com/problemset/problem/288/C)|Codeforces|Codeforces Round #177 (Div. 1) & Codeforces Round #177 (Div. 2)|5|\n|<ul><li>- [ ] Done</li></ul>|35|[Kalila and Dimna in the Logging Industry](http://codeforces.com/problemset/problem/319/C)|Codeforces|Codeforces Round #189 (Div. 1) & Codeforces Round #189 (Div. 2)|5|\n|<ul><li>- [ ] Done</li></ul>|36|[Iahub and Permutations](http://codeforces.com/problemset/problem/340/E)|Codeforces|Codeforces Round #198 (Div. 2) & Codeforces Round #198 (Div. 1)|5|\n|<ul><li>- [ ] Done</li></ul>|37|[Read Time](http://codeforces.com/problemset/problem/343/C)|Codeforces|Codeforces Round #200 (Div. 1) & Codeforces Round #200 (Div. 2)|5|\n|<ul><li>- [ ] Done</li></ul>|38|[Vasya and Beautiful Arrays](http://codeforces.com/problemset/problem/354/C)|Codeforces|Codeforces Round #206 (Div. 1) & Codeforces Round #206 (Div. 2)|5|\n|<ul><li>- [ ] Done</li></ul>|39|[Fox and Card Game](http://codeforces.com/problemset/problem/388/C)|Codeforces|Codeforces Round #228 (Div. 1) & Codeforces Round #228 (Div. 2)|5|\n|<ul><li>- [ ] Done</li></ul>|40|[Mashmokh and Reverse Operation](http://codeforces.com/problemset/problem/414/C)|Codeforces|Codeforces Round #240 (Div. 1) & Codeforces Round #240 (Div. 2)|5|\n|<ul><li>- [ ] Done</li></ul>|41|[Pillars](http://codeforces.com/problemset/problem/474/E)|Codeforces|Codeforces Round #271 (Div. 2)|5|\n|<ul><li>- [ ] Done</li></ul>|42|[Array and Operations](http://codeforces.com/problemset/problem/498/C)|Codeforces|Codeforces Round #284 (Div. 1) & Codeforces Round #284 (Div. 2)|5|\n|<ul><li>- [ ] Done</li></ul>|43|[Breaking Good](http://codeforces.com/problemset/problem/507/E)|Codeforces|Codeforces Round #287 (Div. 2)|5|\n|<ul><li>- [ ] Done</li></ul>|44|[Pretty Song](http://codeforces.com/problemset/problem/509/E)|Codeforces|Codeforces Round #289 (Div. 2, ACM ICPC Rules)|5|\n|<ul><li>- [ ] Done</li></ul>|45|[Soldier and Traveling](http://codeforces.com/problemset/problem/546/E)|Codeforces|Codeforces Round #304 (Div. 2)|5|\n|<ul><li>- [ ] Done</li></ul>|46|[Case of Chocolate](http://codeforces.com/problemset/problem/555/C)|Codeforces|Codeforces Round #310 (Div. 1) & Codeforces Round #310 (Div. 2)|5|\n|<ul><li>- [ ] Done</li></ul>|47|[A Simple Task](http://codeforces.com/problemset/problem/558/E)|Codeforces|Codeforces Round #312 (Div. 2)|5|\n|<ul><li>- [ ] Done</li></ul>|48|[Points on Plane](http://codeforces.com/problemset/problem/576/C)|Codeforces|Codeforces Round #319 (Div. 1) & Codeforces Round #319 (Div. 2)|5|\n|<ul><li>- [ ] Done</li></ul>|49|[Duff in the Army](http://codeforces.com/problemset/problem/587/C)|Codeforces|Codeforces Round #326 (Div. 1) & Codeforces Round #326 (Div. 2)|5|\n|<ul><li>- [ ] Done</li></ul>|50|[Three States](http://codeforces.com/problemset/problem/590/C)|Codeforces|Codeforces Round #327 (Div. 1) & Codeforces Round #327 (Div. 2)|5|\n|<ul><li>- [ ] Done</li></ul>|51|[Wet Shark and Blocks](http://codeforces.com/problemset/problem/621/E)|Codeforces|Codeforces Round #341 (Div. 2)|5|\n|<ul><li>- [ ] Done</li></ul>|52|[Little Artem and Time Machine](http://codeforces.com/problemset/problem/641/E)|Codeforces|VK Cup 2016 - Round 2|5|\n|<ul><li>- [ ] Done</li></ul>|53|[Sasha and Array](http://codeforces.com/problemset/problem/718/C)|Codeforces|Codeforces Round #373 (Div. 1) & Codeforces Round #373 (Div. 2)|5|\n|<ul><li>- [ ] Done</li></ul>|54|[Anton and Tree](http://codeforces.com/problemset/problem/734/E)|Codeforces|Codeforces Round #379 (Div. 2)|5|\n|<ul><li>- [ ] Done</li></ul>|55|[Subordinates](http://codeforces.com/problemset/problem/729/E)|Codeforces|Technocup 2017 - Elimination Round 2|5|\n|<ul><li>- [ ] Done</li></ul>|56|[Comments](http://codeforces.com/problemset/problem/747/E)|Codeforces|Codeforces Round #387 (Div. 2)|5|\n|<ul><li>- [ ] Done</li></ul>|57|[Game of Stones](http://codeforces.com/problemset/problem/768/E)|Codeforces|Divide by Zero 2017 and Codeforces Round #399 (Div. 1 + Div. 2, combined)|5|\n|<ul><li>- [ ] Done</li></ul>|58|[Hanoi Factory](http://codeforces.com/problemset/problem/777/E)|Codeforces|Codeforces Round #401 (Div. 2)|5|\n|<ul><li>- [ ] Done</li></ul>|59|[Bitwise Formula](http://codeforces.com/problemset/problem/778/B)|Codeforces|Codeforces Round #402 (Div. 1) & Codeforces Round #402 (Div. 2)|5|\n|<ul><li>- [ ] Done</li></ul>|60|[Underground Lab](http://codeforces.com/problemset/problem/780/E)|Codeforces|?????????? 2017 - ????? (?????? ??? ??????-??????????)|5|\n|<ul><li>- [ ] Done</li></ul>|61|[Cards Sorting](http://codeforces.com/problemset/problem/830/B)|Codeforces|Codeforces Round #424 (Div. 1, rated, based on VK Cup Finals) & Codeforces Round #424 (Div. 2, rated, based on VK Cup Finals)|5|\n|<ul><li>- [ ] Done</li></ul>|62|[Maximize!](http://codeforces.com/problemset/problem/939/E)|Codeforces|Codeforces Round #464 (Div. 2)|5|\n|<ul><li>- [ ] Done</li></ul>|63|[Minimum spanning tree for each edge](http://codeforces.com/problemset/problem/609/E)|Codeforces|Educational Codeforces Round 3|5|\n|<ul><li>- [ ] Done</li></ul>|64|[Holes](http://codeforces.com/problemset/problem/13/E)|Codeforces|Codeforces Beta Round #13|6|\n|<ul><li>- [ ] Done</li></ul>|65|[Fish](http://codeforces.com/problemset/problem/16/E)|Codeforces|Codeforces Beta Round #16 (Div. 2 Only)|6|\n|<ul><li>- [ ] Done</li></ul>|66|[Test](http://codeforces.com/problemset/problem/25/E)|Codeforces|Codeforces Beta Round #25 (Div. 2 Only)|6|\n|<ul><li>- [ ] Done</li></ul>|67|[Let's Go Rolling!](http://codeforces.com/problemset/problem/38/E)|Codeforces|School Personal Contest #1 (Winter Computer School 2010/11) - Codeforces Beta Round #38 (ACM-ICPC Rules)|6|\n|<ul><li>- [ ] Done</li></ul>|68|[3-cycles](http://codeforces.com/problemset/problem/41/E)|Codeforces|Codeforces Beta Round #40 (Div. 2)|6|\n|<ul><li>- [ ] Done</li></ul>|69|[Interesting Game](http://codeforces.com/problemset/problem/87/C)|Codeforces|Codeforces Beta Round #73 (Div. 1 Only) & Codeforces Beta Round #73 (Div. 2 Only)|6|\n|<ul><li>- [ ] Done</li></ul>|70|[Time to Raid Cowavans](http://codeforces.com/problemset/problem/103/D)|Codeforces|Codeforces Beta Round #80 (Div. 1 Only) & Codeforces Beta Round #80 (Div. 2 Only)|6|\n|<ul><li>- [ ] Done</li></ul>|71|[Bertown roads](http://codeforces.com/problemset/problem/118/E)|Codeforces|Codeforces Beta Round #89 (Div. 2)|6|\n|<ul><li>- [ ] Done</li></ul>|72|[Lucky Permutation](http://codeforces.com/problemset/problem/121/C)|Codeforces|Codeforces Beta Round #91 (Div. 1 Only) & Codeforces Beta Round #91 (Div. 2 Only)|6|\n|<ul><li>- [ ] Done</li></ul>|73|[Yet Another Task with Queens](http://codeforces.com/problemset/problem/131/E)|Codeforces|Codeforces Beta Round #95 (Div. 2)|6|\n|<ul><li>- [ ] Done</li></ul>|74|[Zero-One](http://codeforces.com/problemset/problem/135/C)|Codeforces|Codeforces Beta Round #97 (Div. 1) & Codeforces Beta Round #97 (Div. 2)|6|\n|<ul><li>- [ ] Done</li></ul>|75|[Lucky Subsequence](http://codeforces.com/problemset/problem/145/C)|Codeforces|Codeforces Round #104 (Div. 1) & Codeforces Round #104 (Div. 2)|6|\n|<ul><li>- [ ] Done</li></ul>|76|[Martian Strings](http://codeforces.com/problemset/problem/149/E)|Codeforces|Codeforces Round #106 (Div. 2)|6|\n|<ul><li>- [ ] Done</li></ul>|77|[Double Profiles](http://codeforces.com/problemset/problem/154/C)|Codeforces|Codeforces Round #109 (Div. 1) & Codeforces Round #109 (Div. 2)|6|\n|<ul><li>- [ ] Done</li></ul>|78|[Cipher](http://codeforces.com/problemset/problem/156/C)|Codeforces|Codeforces Round #110 (Div. 1) & Codeforces Round #110 (Div. 2)|6|\n|<ul><li>- [ ] Done</li></ul>|79|[Relay Race](http://codeforces.com/problemset/problem/213/C)|Codeforces|Codeforces Round #131 (Div. 1) & Codeforces Round #131 (Div. 2)|6|\n|<ul><li>- [ ] Done</li></ul>|80|[Decoding Genome](http://codeforces.com/problemset/problem/222/E)|Codeforces|Codeforces Round #137 (Div. 2)|6|\n|<ul><li>- [ ] Done</li></ul>|81|[Partial Sums](http://codeforces.com/problemset/problem/223/C)|Codeforces|Codeforces Round #138 (Div. 1) & Codeforces Round #138 (Div. 2)|6|\n|<ul><li>- [ ] Done</li></ul>|82|[The Road to Berland is Paved With Good Intentions](http://codeforces.com/problemset/problem/228/E)|Codeforces|Codeforces Round #141 (Div. 2)|6|\n|<ul><li>- [ ] Done</li></ul>|83|[Triangles](http://codeforces.com/problemset/problem/229/C)|Codeforces|Codeforces Round #142 (Div. 1) & Codeforces Round #142 (Div. 2)|6|\n|<ul><li>- [ ] Done</li></ul>|84|[Little Elephant and LCM](http://codeforces.com/problemset/problem/258/C)|Codeforces|Codeforces Round #157 (Div. 1) & Codeforces Round #157 (Div. 2)|6|\n|<ul><li>- [ ] Done</li></ul>|85|[Flawed Flow](http://codeforces.com/problemset/problem/269/C)|Codeforces|Codeforces Round #165 (Div. 1) & Codeforces Round #165 (Div. 2)|6|\n|<ul><li>- [ ] Done</li></ul>|86|[Beautiful Decomposition](http://codeforces.com/problemset/problem/279/E)|Codeforces|Codeforces Round #171 (Div. 2)|6|\n|<ul><li>- [ ] Done</li></ul>|87|[Game on Tree](http://codeforces.com/problemset/problem/280/C)|Codeforces|Codeforces Round #172 (Div. 1) & Codeforces Round #172 (Div. 2)|6|\n|<ul><li>- [ ] Done</li></ul>|88|[Main Sequence](http://codeforces.com/problemset/problem/286/C)|Codeforces|Codeforces Round #176 (Div. 1) & Codeforces Round #176 (Div. 2)|6|\n|<ul><li>- [ ] Done</li></ul>|89|[Greg and Friends](http://codeforces.com/problemset/problem/295/C)|Codeforces|Codeforces Round #179 (Div. 1) & Codeforces Round #179 (Div. 2)|6|\n|<ul><li>- [ ] Done</li></ul>|90|[Sereja and Subsequences](http://codeforces.com/problemset/problem/314/C)|Codeforces|Codeforces Round #187 (Div. 1) & Codeforces Round #187 (Div. 2)|6|\n|<ul><li>- [ ] Done</li></ul>|91|[Number Transformation II](http://codeforces.com/problemset/problem/346/C)|Codeforces|Codeforces Round #201 (Div. 1) & Codeforces Round #201 (Div. 2)|6|\n|<ul><li>- [ ] Done</li></ul>|92|[Compartments](http://codeforces.com/problemset/problem/356/C)|Codeforces|Codeforces Round #207 (Div. 1) & Codeforces Round #207 (Div. 2)|6|\n|<ul><li>- [ ] Done</li></ul>|93|[Sereja and the Arrangement of Numbers](http://codeforces.com/problemset/problem/367/C)|Codeforces|Codeforces Round #215 (Div. 1) & Codeforces Round #215 (Div. 2)|6|\n|<ul><li>- [ ] Done</li></ul>|94|[Valera and Queries](http://codeforces.com/problemset/problem/369/E)|Codeforces|Codeforces Round #216 (Div. 2)|6|\n|<ul><li>- [ ] Done</li></ul>|95|[Watching Fireworks is Fun](http://codeforces.com/problemset/problem/372/C)|Codeforces|Codeforces Round #219 (Div. 1) & Codeforces Round #219 (Div. 2)|6|\n|<ul><li>- [ ] Done</li></ul>|96|[On Changing Tree](http://codeforces.com/problemset/problem/396/C)|Codeforces|Codeforces Round #232 (Div. 1) & Codeforces Round #232 (Div. 2)|6|\n|<ul><li>- [ ] Done</li></ul>|97|[Strictly Positive Matrix](http://codeforces.com/problemset/problem/402/E)|Codeforces|Codeforces Round #236 (Div. 2) & Codeforces Round #236 (Div. 1)|6|\n|<ul><li>- [ ] Done</li></ul>|98|[Police Patrol](http://codeforces.com/problemset/problem/427/E)|Codeforces|Codeforces Round #244 (Div. 2)|6|\n|<ul><li>- [ ] Done</li></ul>|99|[Artem and Array ](http://codeforces.com/problemset/problem/442/C)|Codeforces|Codeforces Round #253 (Div. 1)|6|\n|<ul><li>- [ ] Done</li></ul>|100|[DZY Loves Colors](http://codeforces.com/problemset/problem/444/C)|Codeforces|Codeforces Round #254 (Div. 1) & Codeforces Round #254 (Div. 2)|6|\n|<ul><li>- [ ] Done</li></ul>|101|[Divisors](http://codeforces.com/problemset/problem/448/E)|Codeforces|Codeforces Round #256 (Div. 2)|6|\n|<ul><li>- [ ] Done</li></ul>|102|[Jzzhu and Apples](http://codeforces.com/problemset/problem/449/C)|Codeforces|Codeforces Round #257 (Div. 1) & Codeforces Round #257 (Div. 2)|6|\n|<ul><li>- [ ] Done</li></ul>|103|[Devu and Flowers](http://codeforces.com/problemset/problem/451/E)|Codeforces|Codeforces Round #258 (Div. 2)|6|\n|<ul><li>- [ ] Done</li></ul>|104|[Little Pony and Summer Sun Celebration](http://codeforces.com/problemset/problem/453/C)|Codeforces|Codeforces Round #259 (Div. 1) & Codeforces Round #259 (Div. 2)|6|\n|<ul><li>- [ ] Done</li></ul>|105|[Appleman and a Sheet of Paper](http://codeforces.com/problemset/problem/461/C)|Codeforces|Codeforces Round #263 (Div. 1) & Codeforces Round #263 (Div. 2)|6|\n|<ul><li>- [ ] Done</li></ul>|106|[Caisa and Tree](http://codeforces.com/problemset/problem/463/E)|Codeforces|Codeforces Round #264 (Div. 2)|6|\n|<ul><li>- [ ] Done</li></ul>|107|[Substitutes in Number](http://codeforces.com/problemset/problem/464/C)|Codeforces|Codeforces Round #265 (Div. 1) & Codeforces Round #265 (Div. 2)|6|\n|<ul><li>- [ ] Done</li></ul>|108|[Information Graph](http://codeforces.com/problemset/problem/466/E)|Codeforces|Codeforces Round #266 (Div. 2)|6|\n|<ul><li>- [ ] Done</li></ul>|109|[Dreamoon and Strings](http://codeforces.com/problemset/problem/476/E)|Codeforces|Codeforces Round #272 (Div. 2) & Codeforces Round #272 (Div. 1)|6|\n|<ul><li>- [ ] Done</li></ul>|110|[LIS of Sequence](http://codeforces.com/problemset/problem/486/E)|Codeforces|Codeforces Round #277 (Div. 2)|6|\n|<ul><li>- [ ] Done</li></ul>|111|[Prefix Product Sequence](http://codeforces.com/problemset/problem/488/E)|Codeforces|Codeforces Round #278 (Div. 2) & Codeforces Round #278 (Div. 1) & Codeforces Round #278 (Div. 2) & Codeforces Round #278 (Div. 1)|6|\n|<ul><li>- [ ] Done</li></ul>|112|[Restoring Increasing Sequence](http://codeforces.com/problemset/problem/490/E)|Codeforces|Codeforces Round #279 (Div. 2)|6|\n|<ul><li>- [ ] Done</li></ul>|113|[Vanya and Field](http://codeforces.com/problemset/problem/492/E)|Codeforces|Codeforces Round #280 (Div. 2)|6|\n|<ul><li>- [ ] Done</li></ul>|114|[Distributing Parts ](http://codeforces.com/problemset/problem/496/E)|Codeforces|Codeforces Round #283 (Div. 2)|6|\n|<ul><li>- [ ] Done</li></ul>|115|[Arthur and Brackets](http://codeforces.com/problemset/problem/508/E)|Codeforces|Codeforces Round #288 (Div. 2)|6|\n|<ul><li>- [ ] Done</li></ul>|116|[Fox And Dinner](http://codeforces.com/problemset/problem/510/E)|Codeforces|Codeforces Round #290 (Div. 2) & Codeforces Round #290 (Div. 1)|6|\n|<ul><li>- [ ] Done</li></ul>|117|[Drazil and Park](http://codeforces.com/problemset/problem/515/E)|Codeforces|Codeforces Round #292 (Div. 2) & Codeforces Round #292 (Div. 1)|6|\n|<ul><li>- [ ] Done</li></ul>|118|[Pluses everywhere](http://codeforces.com/problemset/problem/520/E)|Codeforces|Codeforces Round #295 (Div. 2) & Codeforces Round #295 (Div. 1)|6|\n|<ul><li>- [ ] Done</li></ul>|119|[Anya and Cubes](http://codeforces.com/problemset/problem/525/E)|Codeforces|Codeforces Round #297 (Div. 2)|6|\n|<ul><li>- [ ] Done</li></ul>|120|[Demiurges Play Again](http://codeforces.com/problemset/problem/538/E)|Codeforces|Codeforces Round #300|6|\n|<ul><li>- [ ] Done</li></ul>|121|[Infinite Inversions](http://codeforces.com/problemset/problem/540/E)|Codeforces|Codeforces Round #301 (Div. 2)|6|\n|<ul><li>- [ ] Done</li></ul>|122|[Brackets in Implications](http://codeforces.com/problemset/problem/550/E)|Codeforces|Codeforces Round #306 (Div. 2)|6|\n|<ul><li>- [ ] Done</li></ul>|123|[GukiZ and GukiZiana](http://codeforces.com/problemset/problem/551/E)|Codeforces|Codeforces Round #307 (Div. 2)|6|\n|<ul><li>- [ ] Done</li></ul>|124|[Vanya and Brackets](http://codeforces.com/problemset/problem/552/E)|Codeforces|Codeforces Round #308 (Div. 2)|6|\n|<ul><li>- [ ] Done</li></ul>|125|[Love Triangles](http://codeforces.com/problemset/problem/553/C)|Codeforces|Codeforces Round #309 (Div. 1) & Codeforces Round #309 (Div. 2)|6|\n|<ul><li>- [ ] Done</li></ul>|126|[Pig and Palindromes](http://codeforces.com/problemset/problem/570/E)|Codeforces|Codeforces Round #316 (Div. 2)|6|\n|<ul><li>- [ ] Done</li></ul>|127|[Kefa and Watch](http://codeforces.com/problemset/problem/580/E)|Codeforces|Codeforces Round #321 (Div. 2)|6|\n|<ul><li>- [ ] Done</li></ul>|128|[Anton and Ira](http://codeforces.com/problemset/problem/584/E)|Codeforces|Codeforces Round #324 (Div. 2)|6|\n|<ul><li>- [ ] Done</li></ul>|129|[Lieges of Legendre](http://codeforces.com/problemset/problem/603/C)|Codeforces|Codeforces Round #334 (Div. 1) & Codeforces Round #334 (Div. 2)|6|\n|<ul><li>- [ ] Done</li></ul>|130|[Table Compression](http://codeforces.com/problemset/problem/650/C)|Codeforces|Codeforces Round #345 (Div. 1) & Codeforces Round #345 (Div. 2)|6|\n|<ul><li>- [ ] Done</li></ul>|131|[Trains and Statistic](http://codeforces.com/problemset/problem/675/E)|Codeforces|Codeforces Round #353 (Div. 2)|6|\n|<ul><li>- [ ] Done</li></ul>|132|[Mike and Geometry Problem](http://codeforces.com/problemset/problem/689/E)|Codeforces|Codeforces Round #361 (Div. 2)|6|\n|<ul><li>- [ ] Done</li></ul>|133|[PLEASE](http://codeforces.com/problemset/problem/696/C)|Codeforces|Codeforces Round #362 (Div. 1) & Codeforces Round #362 (Div. 2)|6|\n|<ul><li>- [ ] Done</li></ul>|134|[ZS and The Birthday Paradox](http://codeforces.com/problemset/problem/711/E)|Codeforces|Codeforces Round #369 (Div. 2)|6|\n|<ul><li>- [ ] Done</li></ul>|135|[Sonya and Problem Wihtout a Legend](http://codeforces.com/problemset/problem/713/C)|Codeforces|Codeforces Round #371 (Div. 1) & Codeforces Round #371 (Div. 2)|6|\n|<ul><li>- [ ] Done</li></ul>|136|[One-Way Reform](http://codeforces.com/problemset/problem/723/E)|Codeforces|Codeforces Round #375 (Div. 2)|6|\n|<ul><li>- [ ] Done</li></ul>|137|[Sockets](http://codeforces.com/problemset/problem/732/E)|Codeforces|Codeforces Round #377 (Div. 2)|6|\n|<ul><li>- [ ] Done</li></ul>|138|[Arpa’s overnight party and Mehrdad’s silent entering](http://codeforces.com/problemset/problem/741/C)|Codeforces|Codeforces Round #383 (Div. 1) & Codeforces Round #383 (Div. 2)|6|\n|<ul><li>- [ ] Done</li></ul>|139|[Numbers Exchange](http://codeforces.com/problemset/problem/746/E)|Codeforces|Codeforces Round #386 (Div. 2)|6|\n|<ul><li>- [ ] Done</li></ul>|140|[Vladik and cards](http://codeforces.com/problemset/problem/743/E)|Codeforces|Codeforces Round #384 (Div. 2)|6|\n|<ul><li>- [ ] Done</li></ul>|141|[New Year Domino](http://codeforces.com/problemset/problem/500/E)|Codeforces|Good Bye 2014|6|\n|<ul><li>- [ ] Done</li></ul>|142|[Santa Claus and Tangerines](http://codeforces.com/problemset/problem/748/E)|Codeforces|Technocup 2017 - Elimination Round 3|6|\n|<ul><li>- [ ] Done</li></ul>|143|[Dasha and Puzzle](http://codeforces.com/problemset/problem/761/E)|Codeforces|Codeforces Round #394 (Div. 2)|6|\n|<ul><li>- [ ] Done</li></ul>|144|[Mahmoud and a xor trip](http://codeforces.com/problemset/problem/766/E)|Codeforces|Codeforces Round #396 (Div. 2)|6|\n|<ul><li>- [ ] Done</li></ul>|145|[Tree Folding](http://codeforces.com/problemset/problem/765/E)|Codeforces|Codeforces Round #397 by Kaspersky Lab and Barcelona Bootcamp (Div. 1 + Div. 2 combined)|6|\n|<ul><li>- [ ] Done</li></ul>|146|[The Holmes Children](http://codeforces.com/problemset/problem/776/E)|Codeforces|ICM Technex 2017 and Codeforces Round #400 (Div. 1 + Div. 2, combined)|6|\n|<ul><li>- [ ] Done</li></ul>|147|[The Great Mixing](http://codeforces.com/problemset/problem/788/C)|Codeforces|Codeforces Round #407 (Div. 1) & Codeforces Round #407 (Div. 2)|6|\n|<ul><li>- [ ] Done</li></ul>|148|[Ice cream coloring](http://codeforces.com/problemset/problem/804/C)|Codeforces|Codeforces Round #411 (Div. 1) & Codeforces Round #411 (Div. 2)|6|\n|<ul><li>- [ ] Done</li></ul>|149|[Karen and Supermarket](http://codeforces.com/problemset/problem/815/C)|Codeforces|Codeforces Round #419 (Div. 1) & Codeforces Round #419 (Div. 2)|6|\n|<ul><li>- [ ] Done</li></ul>|150|[DNA Evolution](http://codeforces.com/problemset/problem/827/C)|Codeforces|Codeforces Round #423 (Div. 1, rated, based on VK Cup Finals) & Codeforces Round #423 (Div. 2, rated, based on VK Cup Finals)|6|\n|<ul><li>- [ ] Done</li></ul>|151|[Okabe and El Psy Kongroo](http://codeforces.com/problemset/problem/821/E)|Codeforces|Codeforces Round #420 (Div. 2)|6|\n|<ul><li>- [ ] Done</li></ul>|152|[National Property](http://codeforces.com/problemset/problem/875/C)|Codeforces|Codeforces Round #441 (Div. 1, by Moscow Team Olympiad) & Codeforces Round #441 (Div. 2, by Moscow Team Olympiad)|6|\n|<ul><li>- [ ] Done</li></ul>|153|[Bindian Signalizing](http://codeforces.com/problemset/problem/5/E)|Codeforces|Codeforces Beta Round #5|7|\n|<ul><li>- [ ] Done</li></ul>|154|[Camels](http://codeforces.com/problemset/problem/14/E)|Codeforces|Codeforces Beta Round #14 (Div. 2)|7|\n|<ul><li>- [ ] Done</li></ul>|155|[Fairy](http://codeforces.com/problemset/problem/19/E)|Codeforces|Codeforces Beta Round #19|7|\n|<ul><li>- [ ] Done</li></ul>|156|[TV Game](http://codeforces.com/problemset/problem/31/E)|Codeforces|Codeforces Beta Round #31 (Div. 2, Codeforces format)|7|\n|<ul><li>- [ ] Done</li></ul>|157|[Comb](http://codeforces.com/problemset/problem/46/E)|Codeforces|School Personal Contest #2 (Winter Computer School 2010/11) - Codeforces Beta Round #43 (ACM-ICPC Rules)|7|\n|<ul><li>- [ ] Done</li></ul>|158|[Domino Principle](http://codeforces.com/problemset/problem/56/E)|Codeforces|Codeforces Beta Round #52 (Div. 2)|7|\n|<ul><li>- [ ] Done</li></ul>|159|[Shortest Path](http://codeforces.com/problemset/problem/59/E)|Codeforces|Codeforces Beta Round #55 (Div. 2)|7|\n|<ul><li>- [ ] Done</li></ul>|160|[Beavermuncher-0xFF](http://codeforces.com/problemset/problem/77/C)|Codeforces|Codeforces Beta Round #69 (Div. 1 Only) & Codeforces Beta Round #69 (Div. 2 Only)|7|\n|<ul><li>- [ ] Done</li></ul>|161|[Ski Base](http://codeforces.com/problemset/problem/91/C)|Codeforces|Codeforces Beta Round #75 (Div. 1 Only) & Codeforces Beta Round #75 (Div. 2 Only)|7|\n|<ul><li>- [ ] Done</li></ul>|162|[Petya and Spiders](http://codeforces.com/problemset/problem/111/C)|Codeforces|Codeforces Beta Round #85 (Div. 1 Only) & Codeforces Beta Round #85 (Div. 2 Only)|7|\n|<ul><li>- [ ] Done</li></ul>|163|[Double Happiness](http://codeforces.com/problemset/problem/113/C)|Codeforces|Codeforces Beta Round #86 (Div. 1 Only) & Codeforces Beta Round #86 (Div. 2 Only)|7|\n|<ul><li>- [ ] Done</li></ul>|164|[Last Chance](http://codeforces.com/problemset/problem/137/E)|Codeforces|Codeforces Beta Round #98 (Div. 2)|7|\n|<ul><li>- [ ] Done</li></ul>|165|[Mushroom Gnomes - 2](http://codeforces.com/problemset/problem/138/C)|Codeforces|Codeforces Beta Round #99 (Div. 1) & Codeforces Beta Round #99 (Div. 2)|7|\n|<ul><li>- [ ] Done</li></ul>|166|[Cubes](http://codeforces.com/problemset/problem/180/E)|Codeforces|Codeforces Round #116 (Div. 2, ACM-ICPC Rules)|7|\n|<ul><li>- [ ] Done</li></ul>|167|[Wooden Fence](http://codeforces.com/problemset/problem/182/E)|Codeforces|Codeforces Round #117 (Div. 2)|7|\n|<ul><li>- [ ] Done</li></ul>|168|[Weak Memory](http://codeforces.com/problemset/problem/187/C)|Codeforces|Codeforces Round #119 (Div. 1) & Codeforces Round #119 (Div. 2)|7|\n|<ul><li>- [ ] Done</li></ul>|169|[Counter Attack](http://codeforces.com/problemset/problem/190/E)|Codeforces|Codeforces Round #120 (Div. 2)|7|\n|<ul><li>- [ ] Done</li></ul>|170|[Paint Tree](http://codeforces.com/problemset/problem/196/C)|Codeforces|Codeforces Round #124 (Div. 1) & Codeforces Round #124 (Div. 2)|7|\n|<ul><li>- [ ] Done</li></ul>|171|[Fragile Bridges](http://codeforces.com/problemset/problem/201/C)|Codeforces|Codeforces Round #127 (Div. 1) & Codeforces Round #127 (Div. 2)|7|\n|<ul><li>- [ ] Done</li></ul>|172|[Little Elephant and Furik and Rubik](http://codeforces.com/problemset/problem/204/C)|Codeforces|Codeforces Round #129 (Div. 1) & Codeforces Round #129 (Div. 2)|7|\n|<ul><li>- [ ] Done</li></ul>|173|[Little Elephant and Shifts](http://codeforces.com/problemset/problem/220/C)|Codeforces|Codeforces Round #136 (Div. 1) & Codeforces Round #136 (Div. 2)|7|\n|<ul><li>- [ ] Done</li></ul>|174|[Cactus](http://codeforces.com/problemset/problem/231/E)|Codeforces|Codeforces Round #143 (Div. 2)|7|\n|<ul><li>- [ ] Done</li></ul>|175|[Champions' League](http://codeforces.com/problemset/problem/234/E)|Codeforces|Codeforces Round #145 (Div. 2, ACM-ICPC Rules)|7|\n|<ul><li>- [ ] Done</li></ul>|176|[Cyclical Quest](http://codeforces.com/problemset/problem/235/C)|Codeforces|Codeforces Round #146 (Div. 1) & Codeforces Round #146 (Div. 2)|7|\n|<ul><li>- [ ] Done</li></ul>|177|[Build String](http://codeforces.com/problemset/problem/237/E)|Codeforces|Codeforces Round #147 (Div. 2)|7|\n|<ul><li>- [ ] Done</li></ul>|178|[World Eater Brothers](http://codeforces.com/problemset/problem/238/C)|Codeforces|Codeforces Round #148 (Div. 1) & Codeforces Round #148 (Div. 2)|7|\n|<ul><li>- [ ] Done</li></ul>|179|[Blood Cousins Return](http://codeforces.com/problemset/problem/246/E)|Codeforces|Codeforces Round #151 (Div. 2)|7|\n|<ul><li>- [ ] Done</li></ul>|180|[Number Transformation](http://codeforces.com/problemset/problem/251/C)|Codeforces|Codeforces Round #153 (Div. 1) & Codeforces Round #153 (Div. 2)|7|\n|<ul><li>- [ ] Done</li></ul>|181|[Furlo and Rublo and Game](http://codeforces.com/problemset/problem/255/E)|Codeforces|Codeforces Round #156 (Div. 2) & Codeforces Round #156 (Div. 1)|7|\n|<ul><li>- [ ] Done</li></ul>|182|[Maxim and Matrix](http://codeforces.com/problemset/problem/261/C)|Codeforces|Codeforces Round #160 (Div. 1) & Codeforces Round #160 (Div. 2)|7|\n|<ul><li>- [ ] Done</li></ul>|183|[Playlist](http://codeforces.com/problemset/problem/268/E)|Codeforces|Codeforces Round #164 (Div. 2)|7|\n|<ul><li>- [ ] Done</li></ul>|184|[Dima and Horses](http://codeforces.com/problemset/problem/272/E)|Codeforces|Codeforces Round #167 (Div. 2) & Codeforces Round #167 (Div. 1)|7|\n|<ul><li>- [ ] Done</li></ul>|185|[Little Girl and Problem on Trees](http://codeforces.com/problemset/problem/276/E)|Codeforces|Codeforces Round #169 (Div. 2)|7|\n|<ul><li>- [ ] Done</li></ul>|186|[Coin Troubles](http://codeforces.com/problemset/problem/283/C)|Codeforces|Codeforces Round #174 (Div. 1) & Codeforces Round #174 (Div. 2)|7|\n|<ul><li>- [ ] Done</li></ul>|187|[Splitting the Uniqueness](http://codeforces.com/problemset/problem/297/C)|Codeforces|Codeforces Round #180 (Div. 1) & Codeforces Round #180 (Div. 2)|7|\n|<ul><li>- [ ] Done</li></ul>|188|[Empire Strikes Back](http://codeforces.com/problemset/problem/300/E)|Codeforces|Codeforces Round #181 (Div. 2)|7|\n|<ul><li>- [ ] Done</li></ul>|189|[Minimum Modular](http://codeforces.com/problemset/problem/303/C)|Codeforces|Codeforces Round #183 (Div. 1) & Codeforces Round #183 (Div. 2)|7|\n|<ul><li>- [ ] Done</li></ul>|190|[Axis Walking](http://codeforces.com/problemset/problem/327/E)|Codeforces|Codeforces Round #191 (Div. 2)|7|\n|<ul><li>- [ ] Done</li></ul>|191|[Graph Reconstruction](http://codeforces.com/problemset/problem/329/C)|Codeforces|Codeforces Round #192 (Div. 1) & Codeforces Round #192 (Div. 2)|7|\n|<ul><li>- [ ] Done</li></ul>|192|[Divisor Tree](http://codeforces.com/problemset/problem/337/E)|Codeforces|Codeforces Round #196 (Div. 2) & Codeforces Round #196 (Div. 1)|7|\n|<ul><li>- [ ] Done</li></ul>|193|[Subset Sums](http://codeforces.com/problemset/problem/348/C)|Codeforces|Codeforces Round #202 (Div. 1) & Codeforces Round #202 (Div. 2)|7|\n|<ul><li>- [ ] Done</li></ul>|194|[Wrong Floyd](http://codeforces.com/problemset/problem/350/E)|Codeforces|Codeforces Round #203 (Div. 2)|7|\n|<ul><li>- [ ] Done</li></ul>|195|[Levko and Strings](http://codeforces.com/problemset/problem/360/C)|Codeforces|Codeforces Round #210 (Div. 1) & Codeforces Round #210 (Div. 2)|7|\n|<ul><li>- [ ] Done</li></ul>|196|[Subway Innovation](http://codeforces.com/problemset/problem/371/E)|Codeforces|Codeforces Round #218 (Div. 2)|7|\n|<ul><li>- [ ] Done</li></ul>|197|[Captains Mode](http://codeforces.com/problemset/problem/377/C)|Codeforces|Codeforces Round #222 (Div. 1) & Codeforces Round #222 (Div. 2)|7|\n|<ul><li>- [ ] Done</li></ul>|198|[George and Cards](http://codeforces.com/problemset/problem/387/E)|Codeforces|Codeforces Round #227 (Div. 2)|7|\n|<ul><li>- [ ] Done</li></ul>|199|[Inna and Binary Logic](http://codeforces.com/problemset/problem/400/E)|Codeforces|Codeforces Round #234 (Div. 2)|7|\n|<ul><li>- [ ] Done</li></ul>|200|[Graph Cutting](http://codeforces.com/problemset/problem/405/E)|Codeforces|Codeforces Round #238 (Div. 2) & Codeforces Round #238 (Div. 1)|7|\n|<ul><li>- [ ] Done</li></ul>|201|[Curious Array](http://codeforces.com/problemset/problem/407/C)|Codeforces|Codeforces Round #239 (Div. 1) & Codeforces Round #239 (Div. 2)|7|\n|<ul><li>- [ ] Done</li></ul>|202|[President's Path](http://codeforces.com/problemset/problem/416/E)|Codeforces|Codeforces Round #241 (Div. 2)|7|\n|<ul><li>- [ ] Done</li></ul>|203|[Sereja and Two Sequences](http://codeforces.com/problemset/problem/425/C)|Codeforces|Codeforces Round #243 (Div. 1) & Codeforces Round #243 (Div. 2)|7|\n|<ul><li>- [ ] Done</li></ul>|204|[Guess the Tree](http://codeforces.com/problemset/problem/429/C)|Codeforces|Codeforces Round #245 (Div. 1) & Codeforces Round #245 (Div. 2)|7|\n|<ul><li>- [ ] Done</li></ul>|205|[Devu and Birthday Celebration](http://codeforces.com/problemset/problem/439/E)|Codeforces|Codeforces Round #251 (Div. 2)|7|\n|<ul><li>- [ ] Done</li></ul>|206|[Hack it!](http://codeforces.com/problemset/problem/468/C)|Codeforces|Codeforces Round #268 (Div. 1) & Codeforces Round #268 (Div. 2)|7|\n|<ul><li>- [ ] Done</li></ul>|207|[Hiking](http://codeforces.com/problemset/problem/489/E)|Codeforces|Codeforces Round #277.5 (Div. 2)|7|\n|<ul><li>- [ ] Done</li></ul>|208|[Darth Vader and Tree](http://codeforces.com/problemset/problem/514/E)|Codeforces|Codeforces Round #291 (Div. 2)|7|\n|<ul><li>- [ ] Done</li></ul>|209|[Arthur and Questions](http://codeforces.com/problemset/problem/518/E)|Codeforces|Codeforces Round #293 (Div. 2)|7|\n|<ul><li>- [ ] Done</li></ul>|210|[Data Center Drama](http://codeforces.com/problemset/problem/527/E)|Codeforces|Codeforces Round #296 (Div. 2) & Codeforces Round #296 (Div. 1)|7|\n|<ul><li>- [ ] Done</li></ul>|211|[Tavas and Pashmaks](http://codeforces.com/problemset/problem/535/E)|Codeforces|Codeforces Round #299 (Div. 2) & Codeforces Round #299 (Div. 1)|7|\n|<ul><li>- [ ] Done</li></ul>|212|[Remembering Strings](http://codeforces.com/problemset/problem/543/C)|Codeforces|Codeforces Round #302 (Div. 1) & Codeforces Round #302 (Div. 2)|7|\n|<ul><li>- [ ] Done</li></ul>|213|[Ann and Half-Palindrome](http://codeforces.com/problemset/problem/557/E)|Codeforces|Codeforces Round #311 (Div. 2)|7|\n|<ul><li>- [ ] Done</li></ul>|214|[President and Roads](http://codeforces.com/problemset/problem/567/E)|Codeforces|Codeforces Round #Pi (Div. 2)|7|\n|<ul><li>- [ ] Done</li></ul>|215|[Bear and Drawing](http://codeforces.com/problemset/problem/573/C)|Codeforces|Codeforces Round #318 [RussianCodeCup Thanks-Round] (Div. 1) & Codeforces Round #318 [RussianCodeCup Thanks-Round] (Div. 2)|7|\n|<ul><li>- [ ] Done</li></ul>|216|[Alice, Bob, Oranges and Apples](http://codeforces.com/problemset/problem/585/C)|Codeforces|Codeforces Round #325 (Div. 1) & Codeforces Round #325 (Div. 2)|7|\n|<ul><li>- [ ] Done</li></ul>|217|[Edo and Magnets](http://codeforces.com/problemset/problem/594/C)|Codeforces|Codeforces Round #330 (Div. 1) & Codeforces Round #330 (Div. 2)|7|\n|<ul><li>- [ ] Done</li></ul>|218|[Kleofáš and the n-thlon](http://codeforces.com/problemset/problem/601/C)|Codeforces|Codeforces Round #333 (Div. 1) & Codeforces Round #333 (Div. 2)|7|\n|<ul><li>- [ ] Done</li></ul>|219|[Freelancer's Dreams](http://codeforces.com/problemset/problem/605/C)|Codeforces|Codeforces Round #335 (Div. 1) & Codeforces Round #335 (Div. 2)|7|\n|<ul><li>- [ ] Done</li></ul>|220|[Marbles](http://codeforces.com/problemset/problem/607/C)|Codeforces|Codeforces Round #336 (Div. 1) & Codeforces Round #336 (Div. 2)|7|\n|<ul><li>- [ ] Done</li></ul>|221|[Hexagons](http://codeforces.com/problemset/problem/615/E)|Codeforces|Codeforces Round #338 (Div. 2)|7|\n|<ul><li>- [ ] Done</li></ul>|222|[Necklace](http://codeforces.com/problemset/problem/613/C)|Codeforces|Codeforces Round #339 (Div. 1) & Codeforces Round #339 (Div. 2)|7|\n|<ul><li>- [ ] Done</li></ul>|223|[Famil Door and Roads](http://codeforces.com/problemset/problem/629/E)|Codeforces|Codeforces Round #343 (Div. 2)|7|\n|<ul><li>- [ ] Done</li></ul>|224|[Product Sum](http://codeforces.com/problemset/problem/631/E)|Codeforces|Codeforces Round #344 (Div. 2)|7|\n|<ul><li>- [ ] Done</li></ul>|225|[Levels and Regions](http://codeforces.com/problemset/problem/643/C)|Codeforces|VK Cup 2016 - Round 3|7|\n|<ul><li>- [ ] Done</li></ul>|226|[The Last Fight Between Human and AI](http://codeforces.com/problemset/problem/676/E)|Codeforces|Codeforces Round #354 (Div. 2)|7|\n|<ul><li>- [ ] Done</li></ul>|227|[Bear and Square Grid](http://codeforces.com/problemset/problem/679/C)|Codeforces|Codeforces Round #356 (Div. 1) & Codeforces Round #356 (Div. 2)|7|\n|<ul><li>- [ ] Done</li></ul>|228|[LRU](http://codeforces.com/problemset/problem/698/C)|Codeforces|Codeforces Round #363 (Div. 1) & Codeforces Round #363 (Div. 2)|7|\n|<ul><li>- [ ] Done</li></ul>|229|[Working routine](http://codeforces.com/problemset/problem/706/E)|Codeforces|Codeforces Round #367 (Div. 2)|7|\n|<ul><li>- [ ] Done</li></ul>|230|[Garlands](http://codeforces.com/problemset/problem/707/E)|Codeforces|Codeforces Round #368 (Div. 2)|7|\n|<ul><li>- [ ] Done</li></ul>|231|[Digit Tree](http://codeforces.com/problemset/problem/715/C)|Codeforces|Codeforces Round #372 (Div. 1) & Codeforces Round #372 (Div. 2)|7|\n|<ul><li>- [ ] Done</li></ul>|232|[Funny Game](http://codeforces.com/problemset/problem/731/E)|Codeforces|Codeforces Round #376 (Div. 2)|7|\n|<ul><li>- [ ] Done</li></ul>|233|[Alyona and towers](http://codeforces.com/problemset/problem/739/C)|Codeforces|Codeforces Round #381 (Div. 1) & Codeforces Round #381 (Div. 2)|7|\n|<ul><li>- [ ] Done</li></ul>|234|[Hongcow Buys a Deck of Cards](http://codeforces.com/problemset/problem/744/C)|Codeforces|Codeforces Round #385 (Div. 1) & Codeforces Round #385 (Div. 2)|7|\n|<ul><li>- [ ] Done</li></ul>|235|[Bash Plays with Functions](http://codeforces.com/problemset/problem/757/E)|Codeforces|Codecraft-17 and Codeforces Round #391 (Div. 1 + Div. 2, combined)|7|\n|<ul><li>- [ ] Done</li></ul>|236|[Nikita and stack](http://codeforces.com/problemset/problem/756/C)|Codeforces|8VC Venture Cup 2017 - Final Round|7|\n|<ul><li>- [ ] Done</li></ul>|237|[Change-free](http://codeforces.com/problemset/problem/767/E)|Codeforces|Codeforces Round #398 (Div. 2)|7|\n|<ul><li>- [ ] Done</li></ul>|238|[Anton and Permutation](http://codeforces.com/problemset/problem/785/E)|Codeforces|Codeforces Round #404 (Div. 2)|7|\n|<ul><li>- [ ] Done</li></ul>|239|[Bear and Company](http://codeforces.com/problemset/problem/771/D)|Codeforces|VK Cup 2017 - Round 1|7|\n|<ul><li>- [ ] Done</li></ul>|240|[Till I Collapse](http://codeforces.com/problemset/problem/786/C)|Codeforces|Codeforces Round #406 (Div. 1) & Codeforces Round #406 (Div. 2)|7|\n|<ul><li>- [ ] Done</li></ul>|241|[Sagheer and Apple Tree](http://codeforces.com/problemset/problem/812/E)|Codeforces|Codeforces Round #417 (Div. 2)|7|\n|<ul><li>- [ ] Done</li></ul>|242|[Aquarium decoration](http://codeforces.com/problemset/problem/799/E)|Codeforces|Playrix Codescapes Cup (Codeforces Round #413, rated, Div. 1 + Div. 2)|7|\n|<ul><li>- [ ] Done</li></ul>|243|[Prairie Partition](http://codeforces.com/problemset/problem/773/C)|Codeforces|VK Cup 2017 - Round 3|7|\n|<ul><li>- [ ] Done</li></ul>|244|[Vulnerable Kerbals](http://codeforces.com/problemset/problem/772/C)|Codeforces|VK Cup 2017 - Round 2|7|\n|<ul><li>- [ ] Done</li></ul>|245|[On the Bench](http://codeforces.com/problemset/problem/840/C)|Codeforces|Codeforces Round #429 (Div. 1) & Codeforces Round #429 (Div. 2)|7|\n|<ul><li>- [ ] Done</li></ul>|246|[Points, Lines and Ready-made Titles](http://codeforces.com/problemset/problem/870/E)|Codeforces|Technocup 2018 - Elimination Round 2|7|\n|<ul><li>- [ ] Done</li></ul>|247|[The Untended Antiquity](http://codeforces.com/problemset/problem/869/E)|Codeforces|Codeforces Round #439 (Div. 2)|7|\n|<ul><li>- [ ] Done</li></ul>|248|[Short Code](http://codeforces.com/problemset/problem/965/E)|Codeforces|Codeforces Round #476 (Div. 2) [Thanks, Telegram!]|7|\n|<ul><li>- [ ] Done</li></ul>|249|[Army Creation](http://codeforces.com/problemset/problem/813/E)|Codeforces|Educational Codeforces Round 22|7|\n|<ul><li>- [ ] Done</li></ul>|250|[Defining Macros](http://codeforces.com/problemset/problem/7/E)|Codeforces|Codeforces Beta Round #7|8|\n|<ul><li>- [ ] Done</li></ul>|251|[Beads](http://codeforces.com/problemset/problem/8/E)|Codeforces|Codeforces Beta Round #8|8|\n|<ul><li>- [ ] Done</li></ul>|252|[Interestring graph and Apples](http://codeforces.com/problemset/problem/9/E)|Codeforces|Codeforces Beta Round #9 (Div. 2 Only)|8|\n|<ul><li>- [ ] Done</li></ul>|253|[Greedy Change](http://codeforces.com/problemset/problem/10/E)|Codeforces|Codeforces Beta Round #10|8|\n|<ul><li>- [ ] Done</li></ul>|254|[Start of the session](http://codeforces.com/problemset/problem/12/E)|Codeforces|Codeforces Beta Round #12 (Div 2 Only)|8|\n|<ul><li>- [ ] Done</li></ul>|255|[Palisection](http://codeforces.com/problemset/problem/17/E)|Codeforces|Codeforces Beta Round #17|8|\n|<ul><li>- [ ] Done</li></ul>|256|[Flag 2](http://codeforces.com/problemset/problem/18/E)|Codeforces|Codeforces Beta Round #18 (Div. 2 Only)|8|\n|<ul><li>- [ ] Done</li></ul>|257|[Scheme](http://codeforces.com/problemset/problem/22/E)|Codeforces|Codeforces Beta Round #22 (Div. 2 Only)|8|\n|<ul><li>- [ ] Done</li></ul>|258|[Tree](http://codeforces.com/problemset/problem/23/E)|Codeforces|Codeforces Beta Round #23|8|\n|<ul><li>- [ ] Done</li></ul>|259|[Berland collider](http://codeforces.com/problemset/problem/24/E)|Codeforces|Codeforces Beta Round #24|8|\n|<ul><li>- [ ] Done</li></ul>|260|[Quarrel](http://codeforces.com/problemset/problem/29/E)|Codeforces|Codeforces Beta Round #29 (Div. 2, Codeforces format)|8|\n|<ul><li>- [ ] Done</li></ul>|261|[Tricky and Clever Password](http://codeforces.com/problemset/problem/30/E)|Codeforces|Codeforces Beta Round #30 (Codeforces format)|8|\n|<ul><li>- [ ] Done</li></ul>|262|[Collisions](http://codeforces.com/problemset/problem/34/E)|Codeforces|Codeforces Beta Round #34 (Div. 2)|8|\n|<ul><li>- [ ] Done</li></ul>|263|[Parade](http://codeforces.com/problemset/problem/35/E)|Codeforces|Codeforces Beta Round #35 (Div. 2)|8|\n|<ul><li>- [ ] Done</li></ul>|264|[Number Table](http://codeforces.com/problemset/problem/40/E)|Codeforces|Codeforces Beta Round #39|8|\n|<ul><li>- [ ] Done</li></ul>|265|[Common ancestor](http://codeforces.com/problemset/problem/49/E)|Codeforces|Codeforces Beta Round #46 (Div. 2)|8|\n|<ul><li>- [ ] Done</li></ul>|266|[Dead Ends](http://codeforces.com/problemset/problem/53/E)|Codeforces|Codeforces Beta Round #49 (Div. 2)|8|\n|<ul><li>- [ ] Done</li></ul>|267|[Very simple problem](http://codeforces.com/problemset/problem/55/E)|Codeforces|Codeforces Beta Round #51|8|\n|<ul><li>- [ ] Done</li></ul>|268|[Sweets Game](http://codeforces.com/problemset/problem/63/E)|Codeforces|Codeforces Beta Round #59 (Div. 2)|8|\n|<ul><li>- [ ] Done</li></ul>|269|[Petya and Post](http://codeforces.com/problemset/problem/66/E)|Codeforces|Codeforces Beta Round #61 (Div. 2)|8|\n|<ul><li>- [ ] Done</li></ul>|270|[Chip Play](http://codeforces.com/problemset/problem/89/C)|Codeforces|Codeforces Beta Round #74 (Div. 1 Only) & Codeforces Beta Round #74 (Div. 2 Only)|8|\n|<ul><li>- [ ] Done</li></ul>|271|[Vectors](http://codeforces.com/problemset/problem/101/C)|Codeforces|Codeforces Beta Round #79 (Div. 1 Only) & Codeforces Beta Round #79 (Div. 2 Only)|8|\n|<ul><li>- [ ] Done</li></ul>|272|[Space Rescuers](http://codeforces.com/problemset/problem/106/E)|Codeforces|Codeforces Beta Round #82 (Div. 2)|8|\n|<ul><li>- [ ] Done</li></ul>|273|[Plumber](http://codeforces.com/problemset/problem/115/C)|Codeforces|Codeforces Beta Round #87 (Div. 1 Only) & Codeforces Beta Round #87 (Div. 2 Only)|8|\n|<ul><li>- [ ] Done</li></ul>|274|[Brackets](http://codeforces.com/problemset/problem/123/C)|Codeforces|Codeforces Beta Round #92 (Div. 1 Only) & Codeforces Beta Round #92 (Div. 2 Only)|8|\n|<ul><li>- [ ] Done</li></ul>|275|[E-reader Display](http://codeforces.com/problemset/problem/126/C)|Codeforces|Codeforces Beta Round #93 (Div. 1 Only) & Codeforces Beta Round #93 (Div. 2 Only)|8|\n|<ul><li>- [ ] Done</li></ul>|276|[New Year Garland](http://codeforces.com/problemset/problem/140/E)|Codeforces|Codeforces Round #100|8|\n|<ul><li>- [ ] Done</li></ul>|277|[Clearing Up](http://codeforces.com/problemset/problem/141/E)|Codeforces|Codeforces Round #101 (Div. 2)|8|\n|<ul><li>- [ ] Done</li></ul>|278|[Help Caretaker](http://codeforces.com/problemset/problem/142/C)|Codeforces|Codeforces Round #102 (Div. 1) & Codeforces Round #102 (Div. 2)|8|\n|<ul><li>- [ ] Done</li></ul>|279|[Competition](http://codeforces.com/problemset/problem/144/E)|Codeforces|Codeforces Round #103 (Div. 2)|8|\n|<ul><li>- [ ] Done</li></ul>|280|[Smart Cheater](http://codeforces.com/problemset/problem/150/C)|Codeforces|Codeforces Round #107 (Div. 1) & Codeforces Round #107 (Div. 2)|8|\n|<ul><li>- [ ] Done</li></ul>|281|[Wizards and Numbers](http://codeforces.com/problemset/problem/167/C)|Codeforces|Codeforces Round #114 (Div. 1) & Codeforces Round #114 (Div. 2)|8|\n|<ul><li>- [ ] Done</li></ul>|282|[Hamming Distance](http://codeforces.com/problemset/problem/193/C)|Codeforces|Codeforces Round #122 (Div. 1) & Codeforces Round #122 (Div. 2)|8|\n|<ul><li>- [ ] Done</li></ul>|283|[Building Forest](http://codeforces.com/problemset/problem/195/E)|Codeforces|Codeforces Round #123 (Div. 2)|8|\n|<ul><li>- [ ] Done</li></ul>|284|[Periodical Numbers](http://codeforces.com/problemset/problem/215/E)|Codeforces|Codeforces Round #132 (Div. 2)|8|\n|<ul><li>- [ ] Done</li></ul>|285|[Martian Luck](http://codeforces.com/problemset/problem/216/E)|Codeforces|Codeforces Round #133 (Div. 2)|8|\n|<ul><li>- [ ] Done</li></ul>|286|[Parking Lot](http://codeforces.com/problemset/problem/219/E)|Codeforces|Codeforces Round #135 (Div. 2)|8|\n|<ul><li>- [ ] Done</li></ul>|287|[Unsolvable](http://codeforces.com/problemset/problem/225/E)|Codeforces|Codeforces Round #139 (Div. 2)|8|\n|<ul><li>- [ ] Done</li></ul>|288|[Anniversary](http://codeforces.com/problemset/problem/226/C)|Codeforces|Codeforces Round #140 (Div. 1) & Codeforces Round #140 (Div. 2)|8|\n|<ul><li>- [ ] Done</li></ul>|289|[Colorado Potato Beetle](http://codeforces.com/problemset/problem/243/C)|Codeforces|Codeforces Round #150 (Div. 1) & Codeforces Round #150 (Div. 2)|8|\n|<ul><li>- [ ] Done</li></ul>|290|[Printer](http://codeforces.com/problemset/problem/253/E)|Codeforces|Codeforces Round #154 (Div. 2)|8|\n|<ul><li>- [ ] Done</li></ul>|291|[More Queries to Array...](http://codeforces.com/problemset/problem/266/E)|Codeforces|Codeforces Round #163 (Div. 2)|8|\n|<ul><li>- [ ] Done</li></ul>|292|[Three Horses](http://codeforces.com/problemset/problem/271/E)|Codeforces|Codeforces Round #166 (Div. 2)|8|\n|<ul><li>- [ ] Done</li></ul>|293|[Game](http://codeforces.com/problemset/problem/277/C)|Codeforces|Codeforces Round #170 (Div. 1) & Codeforces Round #170 (Div. 2)|8|\n|<ul><li>- [ ] Done</li></ul>|294|[Positions in Permutations](http://codeforces.com/problemset/problem/285/E)|Codeforces|Codeforces Round #175 (Div. 2)|8|\n|<ul><li>- [ ] Done</li></ul>|295|[Shaass the Great](http://codeforces.com/problemset/problem/294/E)|Codeforces|Codeforces Round #178 (Div. 2)|8|\n|<ul><li>- [ ] Done</li></ul>|296|[Yaroslav and Algorithm](http://codeforces.com/problemset/problem/301/C)|Codeforces|Codeforces Round #182 (Div. 1) & Codeforces Round #182 (Div. 2)|8|\n|<ul><li>- [ ] Done</li></ul>|297|[Playing with String](http://codeforces.com/problemset/problem/305/E)|Codeforces|Codeforces Round #184 (Div. 2)|8|\n|<ul><li>- [ ] Done</li></ul>|298|[Ilya and Two Numbers](http://codeforces.com/problemset/problem/313/E)|Codeforces|Codeforces Round #186 (Div. 2)|8|\n|<ul><li>- [ ] Done</li></ul>|299|[Balance](http://codeforces.com/problemset/problem/317/C)|Codeforces|Codeforces Round #188 (Div. 1) & Codeforces Round #188 (Div. 2)|8|\n|<ul><li>- [ ] Done</li></ul>|300|[Three Swaps](http://codeforces.com/problemset/problem/339/E)|Codeforces|Codeforces Round #197 (Div. 2)|8|\n|<ul><li>- [ ] Done</li></ul>|301|[Jeff and Brackets](http://codeforces.com/problemset/problem/351/C)|Codeforces|Codeforces Round #204 (Div. 1) & Codeforces Round #204 (Div. 2)|8|\n|<ul><li>- [ ] Done</li></ul>|302|[Antichain](http://codeforces.com/problemset/problem/353/E)|Codeforces|Codeforces Round #205 (Div. 2)|8|\n|<ul><li>- [ ] Done</li></ul>|303|[Petya and Pipes](http://codeforces.com/problemset/problem/362/E)|Codeforces|Codeforces Round #212 (Div. 2)|8|\n|<ul><li>- [ ] Done</li></ul>|304|[Beautiful Set](http://codeforces.com/problemset/problem/364/C)|Codeforces|Codeforces Round #213 (Div. 1) & Codeforces Round #213 (Div. 2)|8|\n|<ul><li>- [ ] Done</li></ul>|305|[Dima and Magic Guitar](http://codeforces.com/problemset/problem/366/E)|Codeforces|Codeforces Round #214 (Div. 2)|8|\n|<ul><li>- [ ] Done</li></ul>|306|[Volcanoes](http://codeforces.com/problemset/problem/383/B)|Codeforces|Codeforces Round #225 (Div. 1) & Codeforces Round #225 (Div. 2)|8|\n|<ul><li>- [ ] Done</li></ul>|307|[Bear in the Field](http://codeforces.com/problemset/problem/385/E)|Codeforces|Codeforces Round #226 (Div. 2)|8|\n|<ul><li>- [ ] Done</li></ul>|308|[Maze 1D](http://codeforces.com/problemset/problem/404/E)|Codeforces|Codeforces Round #237 (Div. 2)|8|\n|<ul><li>- [ ] Done</li></ul>|309|[Square Tiling](http://codeforces.com/problemset/problem/432/E)|Codeforces|Codeforces Round #246 (Div. 2)|8|\n|<ul><li>- [ ] Done</li></ul>|310|[The Child and Polygon](http://codeforces.com/problemset/problem/437/E)|Codeforces|Codeforces Round #250 (Div. 2) & Codeforces Round #250 (Div. 1)|8|\n|<ul><li>- [ ] Done</li></ul>|311|[Alex and Complicated Task](http://codeforces.com/problemset/problem/467/E)|Codeforces|Codeforces Round #267 (Div. 2)|8|\n|<ul><li>- [ ] Done</li></ul>|312|[Game with Strings](http://codeforces.com/problemset/problem/482/C)|Codeforces|Codeforces Round #275 (Div. 1) & Codeforces Round #275 (Div. 2)|8|\n|<ul><li>- [ ] Done</li></ul>|313|[Strange Sorting](http://codeforces.com/problemset/problem/484/C)|Codeforces|Codeforces Round #276 (Div. 1) & Codeforces Round #276 (Div. 2)|8|\n|<ul><li>- [ ] Done</li></ul>|314|[Vasya and Polynomial](http://codeforces.com/problemset/problem/493/E)|Codeforces|Codeforces Round #281 (Div. 2)|8|\n|<ul><li>- [ ] Done</li></ul>|315|[Helping People](http://codeforces.com/problemset/problem/494/C)|Codeforces|Codeforces Round #282 (Div. 1) & Codeforces Round #282 (Div. 2)|8|\n|<ul><li>- [ ] Done</li></ul>|316|[Misha and Palindrome Degree](http://codeforces.com/problemset/problem/501/E)|Codeforces|Codeforces Round #285 (Div. 2) & Codeforces Round #285 (Div. 1)|8|\n|<ul><li>- [ ] Done</li></ul>|317|[Mike and Friends](http://codeforces.com/problemset/problem/547/E)|Codeforces|Codeforces Round #305 (Div. 1)|8|\n|<ul><li>- [ ] Done</li></ul>|318|[New Language](http://codeforces.com/problemset/problem/568/C)|Codeforces|Codeforces Round #315 (Div. 1) & Codeforces Round #315 (Div. 2)|8|\n|<ul><li>- [ ] Done</li></ul>|319|[CNF 2](http://codeforces.com/problemset/problem/571/C)|Codeforces|Codeforces Round #317 [AimFund Thanks-Round] (Div. 1) & Codeforces Round #317 [AimFund Thanks-Round] (Div. 2)|8|\n|<ul><li>- [ ] Done</li></ul>|320|[Superior Periodic Subarrays](http://codeforces.com/problemset/problem/582/C)|Codeforces|Codeforces Round #323 (Div. 1) & Codeforces Round #323 (Div. 2)|8|\n|<ul><li>- [ ] Done</li></ul>|321|[Alphabet Permutations](http://codeforces.com/problemset/problem/610/E)|Codeforces|Codeforces Round #337 (Div. 2)|8|\n|<ul><li>- [ ] Done</li></ul>|322|[Ultimate Weirdness of an Array](http://codeforces.com/problemset/problem/671/C)|Codeforces|Codeforces Round #352 (Div. 1) & Codeforces Round #352 (Div. 2)|8|\n|<ul><li>- [ ] Done</li></ul>|323|[Vanya and Balloons](http://codeforces.com/problemset/problem/677/E)|Codeforces|Codeforces Round #355 (Div. 2)|8|\n|<ul><li>- [ ] Done</li></ul>|324|[Alyona and Triangles](http://codeforces.com/problemset/problem/682/E)|Codeforces|Codeforces Round #358 (Div. 2)|8|\n|<ul><li>- [ ] Done</li></ul>|325|[Mishka and Divisors](http://codeforces.com/problemset/problem/703/E)|Codeforces|Codeforces Round #365 (Div. 2)|8|\n|<ul><li>- [ ] Done</li></ul>|326|[Memory and Casinos](http://codeforces.com/problemset/problem/712/E)|Codeforces|Codeforces Round #370 (Div. 2)|8|\n|<ul><li>- [ ] Done</li></ul>|327|[Sleep in Class](http://codeforces.com/problemset/problem/733/E)|Codeforces|Codeforces Round #378 (Div. 2)|8|\n|<ul><li>- [ ] Done</li></ul>|328|[Inversions After Shuffle](http://codeforces.com/problemset/problem/749/E)|Codeforces|Codeforces Round #388 (Div. 2)|8|\n|<ul><li>- [ ] Done</li></ul>|329|[Timofey and remoduling](http://codeforces.com/problemset/problem/763/C)|Codeforces|Codeforces Round #395 (Div. 1) & Codeforces Round #395 (Div. 2)|8|\n|<ul><li>- [ ] Done</li></ul>|330|[Exam Cheating](http://codeforces.com/problemset/problem/796/E)|Codeforces|Codeforces Round #408 (Div. 2)|8|\n|<ul><li>- [ ] Done</li></ul>|331|[Vladik and Entertaining Flags](http://codeforces.com/problemset/problem/811/E)|Codeforces|Codeforces Round #416 (Div. 2)|8|\n|<ul><li>- [ ] Done</li></ul>|332|[Find a car](http://codeforces.com/problemset/problem/809/C)|Codeforces|Codeforces Round #415 (Div. 1) & Codeforces Round #415 (Div. 2)|8|\n|<ul><li>- [ ] Done</li></ul>|333|[Shortest Path Problem?](http://codeforces.com/problemset/problem/845/G)|Codeforces|Educational Codeforces Round 27|8|\n|<ul><li>- [ ] Done</li></ul>|334|[Mother of Dragons](http://codeforces.com/problemset/problem/839/E)|Codeforces|Codeforces Round #428 (Div. 2)|8|\n|<ul><li>- [ ] Done</li></ul>|335|[The penguin's game](http://codeforces.com/problemset/problem/835/E)|Codeforces|Codeforces Round #427 (Div. 2)|8|\n|<ul><li>- [ ] Done</li></ul>|336|[Liar](http://codeforces.com/problemset/problem/822/E)|Codeforces|Codeforces Round #422 (Div. 2)|8|\n|<ul><li>- [ ] Done</li></ul>|337|[An unavoidable detour for home](http://codeforces.com/problemset/problem/814/E)|Codeforces|Codeforces Round #418 (Div. 2)|8|\n|<ul><li>- [ ] Done</li></ul>|338|[Nastya and King-Shamans](http://codeforces.com/problemset/problem/992/E)|Codeforces|Codeforces Round #489 (Div. 2)|8|\n|<ul><li>- [ ] Done</li></ul>|339|[Triangles](http://codeforces.com/problemset/problem/15/E)|Codeforces|Codeforces Beta Round #15|9|\n|<ul><li>- [ ] Done</li></ul>|340|[Multithreading](http://codeforces.com/problemset/problem/26/E)|Codeforces|Codeforces Beta Round #26 (Codeforces format)|9|\n|<ul><li>- [ ] Done</li></ul>|341|[Hide-and-Seek](http://codeforces.com/problemset/problem/32/E)|Codeforces|Codeforces Beta Round #32 (Div. 2, Codeforces format)|9|\n|<ul><li>- [ ] Done</li></ul>|342|[Two Paths](http://codeforces.com/problemset/problem/36/E)|Codeforces|Codeforces Beta Round #36|9|\n|<ul><li>- [ ] Done</li></ul>|343|[Trial for Chief](http://codeforces.com/problemset/problem/37/E)|Codeforces|Codeforces Beta Round #37|9|\n|<ul><li>- [ ] Done</li></ul>|344|[Race](http://codeforces.com/problemset/problem/43/E)|Codeforces|Codeforces Beta Round #42 (Div. 2)|9|\n|<ul><li>- [ ] Done</li></ul>|345|[Cannon](http://codeforces.com/problemset/problem/47/E)|Codeforces|Codeforces Beta Round #44 (Div. 2)|9|\n|<ul><li>- [ ] Done</li></ul>|346|[Ivan the Fool VS Gorynych the Dragon](http://codeforces.com/problemset/problem/48/E)|Codeforces|School Personal Contest #3 (Winter Computer School 2010/11) - Codeforces Beta Round #45 (ACM-ICPC Rules)|9|\n|<ul><li>- [ ] Done</li></ul>|347|[Square Equation Roots](http://codeforces.com/problemset/problem/50/E)|Codeforces|Codeforces Beta Round #47|9|\n|<ul><li>- [ ] Done</li></ul>|348|[Pentagon](http://codeforces.com/problemset/problem/51/E)|Codeforces|Codeforces Beta Round #48|9|\n|<ul><li>- [ ] Done</li></ul>|349|[Mushroom Gnomes](http://codeforces.com/problemset/problem/60/E)|Codeforces|Codeforces Beta Round #56|9|\n|<ul><li>- [ ] Done</li></ul>|350|[Information Reform](http://codeforces.com/problemset/problem/70/E)|Codeforces|Codeforces Beta Round #64|9|\n|<ul><li>- [ ] Done</li></ul>|351|[Nuclear Fusion](http://codeforces.com/problemset/problem/71/E)|Codeforces|Codeforces Beta Round #65 (Div. 2)|9|\n|<ul><li>- [ ] Done</li></ul>|352|[Morrowindows](http://codeforces.com/problemset/problem/73/E)|Codeforces|Codeforces Beta Round #66|9|\n|<ul><li>- [ ] Done</li></ul>|353|[Ship's Shortest Path](http://codeforces.com/problemset/problem/75/E)|Codeforces|Codeforces Beta Round #67 (Div. 2)|9|\n|<ul><li>- [ ] Done</li></ul>|354|[Evacuation](http://codeforces.com/problemset/problem/78/E)|Codeforces|Codeforces Beta Round #70 (Div. 2)|9|\n|<ul><li>- [ ] Done</li></ul>|355|[Track](http://codeforces.com/problemset/problem/83/C)|Codeforces|Codeforces Beta Round #72 (Div. 1 Only) & Codeforces Beta Round #72 (Div. 2 Only)|9|\n|<ul><li>- [ ] Done</li></ul>|356|[Azembler](http://codeforces.com/problemset/problem/93/C)|Codeforces|Codeforces Beta Round #76 (Div. 1 Only) & Codeforces Beta Round #76 (Div. 2 Only)|9|\n|<ul><li>- [ ] Done</li></ul>|357|[Horse Races](http://codeforces.com/problemset/problem/95/D)|Codeforces|Codeforces Beta Round #77 (Div. 1 Only) & Codeforces Beta Round #77 (Div. 2 Only)|9|\n|<ul><li>- [ ] Done</li></ul>|358|[Help Greg the Dwarf](http://codeforces.com/problemset/problem/98/C)|Codeforces|Codeforces Beta Round #78 (Div. 1 Only) & Codeforces Beta Round #78 (Div. 2 Only)|9|\n|<ul><li>- [ ] Done</li></ul>|359|[Arrangement](http://codeforces.com/problemset/problem/107/C)|Codeforces|Codeforces Beta Round #83 (Div. 1 Only) & Codeforces Beta Round #83 (Div. 2 Only)|9|\n|<ul><li>- [ ] Done</li></ul>|360|[Garden](http://codeforces.com/problemset/problem/152/E)|Codeforces|Codeforces Round #108 (Div. 2)|9|\n|<ul><li>- [ ] Done</li></ul>|361|[Buses and People](http://codeforces.com/problemset/problem/160/E)|Codeforces|Codeforces Round #111 (Div. 2)|9|\n|<ul><li>- [ ] Done</li></ul>|362|[Power Defence](http://codeforces.com/problemset/problem/175/E)|Codeforces|Codeforces Round #115|9|\n|<ul><li>- [ ] Done</li></ul>|363|[Delivering Carcinogen](http://codeforces.com/problemset/problem/198/C)|Codeforces|Codeforces Round #125 (Div. 1) & Codeforces Round #125 (Div. 2)|9|\n|<ul><li>- [ ] Done</li></ul>|364|[Tractor College](http://codeforces.com/problemset/problem/200/E)|Codeforces|Codeforces Round #126 (Div. 2)|9|\n|<ul><li>- [ ] Done</li></ul>|365|[Transportation](http://codeforces.com/problemset/problem/203/E)|Codeforces|Codeforces Round #128 (Div. 2)|9|\n|<ul><li>- [ ] Done</li></ul>|366|[Formurosa](http://codeforces.com/problemset/problem/217/C)|Codeforces|Codeforces Round #134 (Div. 1) & Codeforces Round #134 (Div. 2)|9|\n|<ul><li>- [ ] Done</li></ul>|367|[Piglet's Birthday](http://codeforces.com/problemset/problem/248/E)|Codeforces|Codeforces Round #152 (Div. 2) & Codeforces Round #152 (Div. 1)|9|\n|<ul><li>- [ ] Done</li></ul>|368|[Dormitory](http://codeforces.com/problemset/problem/254/E)|Codeforces|Codeforces Round #155 (Div. 2)|9|\n|<ul><li>- [ ] Done</li></ul>|369|[Dividing Kingdom](http://codeforces.com/problemset/problem/260/E)|Codeforces|Codeforces Round #158 (Div. 2)|9|\n|<ul><li>- [ ] Done</li></ul>|370|[Greedy Elevator](http://codeforces.com/problemset/problem/257/E)|Codeforces|Codeforces Round #159 (Div. 2)|9|\n|<ul><li>- [ ] Done</li></ul>|371|[Rhombus](http://codeforces.com/problemset/problem/263/E)|Codeforces|Codeforces Round #161 (Div. 2)|9|\n|<ul><li>- [ ] Done</li></ul>|372|[The Last Hole!](http://codeforces.com/problemset/problem/274/C)|Codeforces|Codeforces Round #168 (Div. 1) & Codeforces Round #168 (Div. 2)|9|\n|<ul><li>- [ ] Done</li></ul>|373|[Fetch the Treasure](http://codeforces.com/problemset/problem/311/C)|Codeforces|Codeforces Round #185 (Div. 1) & Codeforces Round #185 (Div. 2)|9|\n|<ul><li>- [ ] Done</li></ul>|374|[Binary Key](http://codeforces.com/problemset/problem/332/E)|Codeforces|Codeforces Round #193 (Div. 2)|9|\n|<ul><li>- [ ] Done</li></ul>|375|[Lucky Tickets](http://codeforces.com/problemset/problem/333/C)|Codeforces|Codeforces Round #194 (Div. 1) & Codeforces Round #194 (Div. 2)|9|\n|<ul><li>- [ ] Done</li></ul>|376|[Dima and Kicks](http://codeforces.com/problemset/problem/358/E)|Codeforces|Codeforces Round #208 (Div. 2)|9|\n|<ul><li>- [ ] Done</li></ul>|377|[Neatness](http://codeforces.com/problemset/problem/359/E)|Codeforces|Codeforces Round #209 (Div. 2)|9|\n|<ul><li>- [ ] Done</li></ul>|378|[Circling Round Treasures](http://codeforces.com/problemset/problem/375/C)|Codeforces|Codeforces Round #221 (Div. 1) & Codeforces Round #221 (Div. 2)|9|\n|<ul><li>- [ ] Done</li></ul>|379|[Ksenia and Combinatorics](http://codeforces.com/problemset/problem/382/E)|Codeforces|Codeforces Round #224 (Div. 2)|9|\n|<ul><li>- [ ] Done</li></ul>|380|[Inna and Large Sweet Matrix](http://codeforces.com/problemset/problem/390/E)|Codeforces|Codeforces Round #229 (Div. 2)|9|\n|<ul><li>- [ ] Done</li></ul>|381|[Yet Another Number Sequence](http://codeforces.com/problemset/problem/392/C)|Codeforces|Codeforces Round #230 (Div. 1) & Codeforces Round #230 (Div. 2)|9|\n|<ul><li>- [ ] Done</li></ul>|382|[Tree and Array](http://codeforces.com/problemset/problem/398/C)|Codeforces|Codeforces Round #233 (Div. 1) & Codeforces Round #233 (Div. 2)|9|\n|<ul><li>- [ ] Done</li></ul>|383|[Chemistry Experiment](http://codeforces.com/problemset/problem/431/E)|Codeforces|Codeforces Round #247 (Div. 2)|9|\n|<ul><li>- [ ] Done</li></ul>|384|[Tachibana Kanade's Tofu](http://codeforces.com/problemset/problem/433/E)|Codeforces|Codeforces Round #248 (Div. 2) & Codeforces Round #248 (Div. 1)|9|\n|<ul><li>- [ ] Done</li></ul>|385|[Special Graph](http://codeforces.com/problemset/problem/435/E)|Codeforces|Codeforces Round #249 (Div. 2)|9|\n|<ul><li>- [ ] Done</li></ul>|386|[Valera and Number](http://codeforces.com/problemset/problem/441/E)|Codeforces|Codeforces Round #252 (Div. 2)|9|\n|<ul><li>- [ ] Done</li></ul>|387|[Roland and Rose](http://codeforces.com/problemset/problem/460/E)|Codeforces|Codeforces Round #262 (Div. 2)|9|\n|<ul><li>- [ ] Done</li></ul>|388|[Mr. Kitayuta vs. Bamboos](http://codeforces.com/problemset/problem/505/E)|Codeforces|Codeforces Round #286 (Div. 2) & Codeforces Round #286 (Div. 1)|9|\n|<ul><li>- [ ] Done</li></ul>|389|[Berland Local Positioning System](http://codeforces.com/problemset/problem/534/E)|Codeforces|Codeforces Round #298 (Div. 2)|9|\n|<ul><li>- [ ] Done</li></ul>|390|[Strange Calculation and Cats](http://codeforces.com/problemset/problem/593/E)|Codeforces|Codeforces Round #329 (Div. 2)|9|\n|<ul><li>- [ ] Done</li></ul>|391|[Wilbur and Strings](http://codeforces.com/problemset/problem/596/E)|Codeforces|Codeforces Round #331 (Div. 2)|9|\n|<ul><li>- [ ] Done</li></ul>|392|[Sandy and Nuts](http://codeforces.com/problemset/problem/599/E)|Codeforces|Codeforces Round #332 (Div. 2)|9|\n|<ul><li>- [ ] Done</li></ul>|393|[Runaway to a Shadow](http://codeforces.com/problemset/problem/681/E)|Codeforces|Codeforces Round #357 (Div. 2)|9|\n|<ul><li>- [ ] Done</li></ul>|394|[Optimal Point](http://codeforces.com/problemset/problem/685/C)|Codeforces|Codeforces Round #359 (Div. 1) & Codeforces Round #359 (Div. 2)|9|\n|<ul><li>- [ ] Done</li></ul>|395|[Black Widow](http://codeforces.com/problemset/problem/704/C)|Codeforces|Codeforces Round #366 (Div. 1) & Codeforces Round #366 (Div. 2)|9|\n|<ul><li>- [ ] Done</li></ul>|396|[Road to Home](http://codeforces.com/problemset/problem/721/E)|Codeforces|Codeforces Round #374 (Div. 2)|9|\n|<ul><li>- [ ] Done</li></ul>|397|[Dasha and cyclic table](http://codeforces.com/problemset/problem/754/E)|Codeforces|Codeforces Round #390 (Div. 2)|9|\n|<ul><li>- [ ] Done</li></ul>|398|[Broken Tree](http://codeforces.com/problemset/problem/758/E)|Codeforces|Codeforces Round #392 (Div. 2)|9|\n|<ul><li>- [ ] Done</li></ul>|399|[Choosing Carrot](http://codeforces.com/problemset/problem/794/E)|Codeforces|Tinkoff Challenge - Final Round (Codeforces Round #414, rated, Div. 1 + Div. 2)|9|\n|<ul><li>- [ ] Done</li></ul>|400|[Mike and code of a permutation](http://codeforces.com/problemset/problem/798/E)|Codeforces|Codeforces Round #410 (Div. 2)|9|\n|<ul><li>- [ ] Done</li></ul>|401|[Ever-Hungry Krakozyabra](http://codeforces.com/problemset/problem/833/C)|Codeforces|Codeforces Round #426 (Div. 1) & Codeforces Round #426 (Div. 2)|9|\n|<ul><li>- [ ] Done</li></ul>|402|[Vasya and Shifts](http://codeforces.com/problemset/problem/832/E)|Codeforces|Codeforces Round #425 (Div. 2)|9|\n|<ul><li>- [ ] Done</li></ul>|403|[Awards For Contestants](http://codeforces.com/problemset/problem/873/E)|Codeforces|Educational Codeforces Round 30|9|\n|<ul><li>- [ ] Done</li></ul>|404|[Policeman and a Tree](http://codeforces.com/problemset/problem/868/E)|Codeforces|Codeforces Round #438 by Sberbank and Barcelona Bootcamp (Div. 1 + Div. 2 combined)|9|\n|<ul><li>- [ ] Done</li></ul>|405|[Forward, march!](http://codeforces.com/problemset/problem/11/E)|Codeforces|Codeforces Beta Round #11|10|\n|<ul><li>- [ ] Done</li></ul>|406|[DravDe saves the world](http://codeforces.com/problemset/problem/28/E)|Codeforces|Codeforces Beta Round #28 (Codeforces format)|10|\n|<ul><li>- [ ] Done</li></ul>|407|[Helper](http://codeforces.com/problemset/problem/33/E)|Codeforces|Codeforces Beta Round #33 (Codeforces format)|10|\n|<ul><li>- [ ] Done</li></ul>|408|[Baldman and the military](http://codeforces.com/problemset/problem/42/E)|Codeforces|Codeforces Beta Round #41|10|\n|<ul><li>- [ ] Done</li></ul>|409|[Vacuum ?leaner](http://codeforces.com/problemset/problem/54/E)|Codeforces|Codeforces Beta Round #50|10|\n|<ul><li>- [ ] Done</li></ul>|410|[Chess](http://codeforces.com/problemset/problem/57/E)|Codeforces|Codeforces Beta Round #53|10|\n|<ul><li>- [ ] Done</li></ul>|411|[Expression](http://codeforces.com/problemset/problem/58/E)|Codeforces|Codeforces Beta Round #54 (Div. 2)|10|\n|<ul><li>- [ ] Done</li></ul>|412|[World Evil](http://codeforces.com/problemset/problem/62/E)|Codeforces|Codeforces Beta Round #58|10|\n|<ul><li>- [ ] Done</li></ul>|413|[Harry Potter and Moving Staircases](http://codeforces.com/problemset/problem/65/E)|Codeforces|Codeforces Beta Round #60|10|\n|<ul><li>- [ ] Done</li></ul>|414|[Contact](http://codeforces.com/problemset/problem/68/E)|Codeforces|Codeforces Beta Round #62|10|\n|<ul><li>- [ ] Done</li></ul>|415|[Shift It!](http://codeforces.com/problemset/problem/74/E)|Codeforces|Codeforces Beta Round #68|10|\n|<ul><li>- [ ] Done</li></ul>|416|[Security System](http://codeforces.com/problemset/problem/79/E)|Codeforces|Codeforces Beta Round #71|10|\n|<ul><li>- [ ] Done</li></ul>|417|[Lift and Throw](http://codeforces.com/problemset/problem/105/E)|Codeforces|Codeforces Beta Round #81|10|\n|<ul><li>- [ ] Done</li></ul>|418|[Lucky Interval](http://codeforces.com/problemset/problem/109/E)|Codeforces|Codeforces Beta Round #84 (Div. 1 Only)|10|\n|<ul><li>- [ ] Done</li></ul>|419|[Tree or not Tree](http://codeforces.com/problemset/problem/117/E)|Codeforces|Codeforces Beta Round #88|10|\n|<ul><li>- [ ] Done</li></ul>|420|[Alternative Reality](http://codeforces.com/problemset/problem/119/E)|Codeforces|Codeforces Beta Round #90|10|\n|<ul><li>- [ ] Done</li></ul>|421|[Clever Fat Rat](http://codeforces.com/problemset/problem/185/C)|Codeforces|Codeforces Round #118 (Div. 1) & Codeforces Round #118 (Div. 2)|10|\n|<ul><li>- [ ] Done</li></ul>|422|[Doe Graphs](http://codeforces.com/problemset/problem/232/C)|Codeforces|Codeforces Round #144 (Div. 1) & Codeforces Round #144 (Div. 2)|10|\n|<ul><li>- [ ] Done</li></ul>|423|[Vasily the Bear and Painting Square](http://codeforces.com/problemset/problem/336/E)|Codeforces|Codeforces Round #195 (Div. 2)|10|\n|<ul><li>- [ ] Done</li></ul>|424|[Two Circles](http://codeforces.com/problemset/problem/363/E)|Codeforces|Codeforces Round #211 (Div. 2)|10|\n|<ul><li>- [ ] Done</li></ul>|425|[Summer Reading](http://codeforces.com/problemset/problem/370/E)|Codeforces|Codeforces Round #217 (Div. 2)|10|\n|<ul><li>- [ ] Done</li></ul>|426|[Inna and Babies](http://codeforces.com/problemset/problem/374/E)|Codeforces|Codeforces Round #220 (Div. 2)|10|\n|<ul><li>- [ ] Done</li></ul>|427|[Lightbulb for Minister](http://codeforces.com/problemset/problem/394/E)|Codeforces|Codeforces Round #231 (Div. 2)|10|\n|<ul><li>- [ ] Done</li></ul>|428|[Olympic Games](http://codeforces.com/problemset/problem/401/E)|Codeforces|Codeforces Round #235 (Div. 2)|10|\n|<ul><li>- [ ] Done</li></ul>|429|[Colored Jenga](http://codeforces.com/problemset/problem/424/E)|Codeforces|Codeforces Round #242 (Div. 2)|10|\n|<ul><li>- [ ] Done</li></ul>|430|[DZY Loves Bridges](http://codeforces.com/problemset/problem/446/E)|Codeforces|Codeforces Round #255 (Div. 1)|10|\n|<ul><li>- [ ] Done</li></ul>|431|[MUH and Lots and Lots of Segments](http://codeforces.com/problemset/problem/471/E)|Codeforces|Codeforces Round #269 (Div. 2)|10|\n|<ul><li>- [ ] Done</li></ul>|432|[Design Tutorial: Learn from a Game](http://codeforces.com/problemset/problem/472/E)|Codeforces|Codeforces Round #270|10|\n|<ul><li>- [ ] Done</li></ul>|433|[Wavy numbers](http://codeforces.com/problemset/problem/478/E)|Codeforces|Codeforces Round #273 (Div. 2)|10|\n|<ul><li>- [ ] Done</li></ul>|434|[Kojiro and Furrari](http://codeforces.com/problemset/problem/581/E)|Codeforces|Codeforces Round #322 (Div. 2)|10|\n|<ul><li>- [ ] Done</li></ul>|435|[BCPC](http://codeforces.com/problemset/problem/592/E)|Codeforces|Codeforces Round #328 (Div. 2)|10|\n|<ul><li>- [ ] Done</li></ul>|436|[Frog Fights](http://codeforces.com/problemset/problem/625/E)|Codeforces|Codeforces Round #342 (Div. 2)|10|\n|<ul><li>- [ ] Done</li></ul>|437|[To Hack or not to Hack](http://codeforces.com/problemset/problem/662/E)|Codeforces|CROC 2016 - Final Round [Private, For Onsite Finalists Only]|10|\n|<ul><li>- [ ] Done</li></ul>|438|[Chain Reaction](http://codeforces.com/problemset/problem/666/D)|Codeforces|Codeforces Round #349 (Div. 1) & Codeforces Round #349 (Div. 2)|10|\n|<ul><li>- [ ] Done</li></ul>|439|[Mister B and Beacons on Field](http://codeforces.com/problemset/problem/819/C)|Codeforces|Codeforces Round #421 (Div. 1) & Codeforces Round #421 (Div. 2)|10|\n"
  },
  {
    "path": "categories/013. Binary_Search_Ternary_Search/README.md",
    "content": "# 013. Binary_Search_Ternary_Search\n\n\n| Checkbox | ID | Problem Name|Online Judge|Year|Contest|Difficulty Level|\n|:---:|:---:|:---:|:---:|:---:|:---:|:---:|\n|<ul><li>- [ ] Done</li></ul>|1|[Aggressive cows](http://www.spoj.com/problems/AGGRCOW/)|SPOJ|||1|\n|<ul><li>- [ ] Done</li></ul>|2|[Copying Books](http://www.spoj.com/problems/BOOKS1/)|SPOJ|||1|\n|<ul><li>- [ ] Done</li></ul>|3|[Fill the Cisterns](http://www.spoj.com/problems/CISTFILL/)|SPOJ|||1|\n|<ul><li>- [ ] Done</li></ul>|4|[Pie](http://www.spoj.com/problems/PIE/)|SPOJ|||1|\n|<ul><li>- [ ] Done</li></ul>|5|[Pyramids](http://www.spoj.com/problems/PIR/)|SPOJ|||1|\n|<ul><li>- [ ] Done</li></ul>|6|[Sphere in a tetrahedron](http://www.spoj.com/problems/TETRA/)|SPOJ|||1|\n|<ul><li>- [ ] Done</li></ul>|7|[4 values whose sum is 0](http://www.spoj.com/problems/SUMFOUR/)|SPOJ|||1|\n|<ul><li>- [ ] Done</li></ul>|8|[ABCDEF](http://www.spoj.com/problems/ABCDEF/)|SPOJ|||1|\n|<ul><li>- [ ] Done</li></ul>|9|[Help the soldier](http://www.spoj.com/problems/SOLDIER/)|SPOJ|||1|\n|<ul><li>- [ ] Done</li></ul>|10|[Rent your airplane and make money](http://www.spoj.com/problems/RENT/)|SPOJ|||1|\n|<ul><li>- [ ] Done</li></ul>|11|[K12 - Building Construction](http://www.spoj.com/problems/KOPC12A/)|SPOJ|||1|\n|<ul><li>- [ ] Done</li></ul>|12|[Hamster flight](http://www.spoj.com/problems/HAMSTER1/)|SPOJ|||1|\n|<ul><li>- [ ] Done</li></ul>|13|[Eko](http://www.spoj.com/problems/EKO/)|SPOJ|||1|\n|<ul><li>- [ ] Done</li></ul>|14|[String it out](http://www.spoj.com/problems/SUBS/)|SPOJ|||1|\n|<ul><li>- [ ] Done</li></ul>|15|[Not a Triangle](http://www.spoj.com/problems/NOTATRI/)|SPOJ|||1|\n|<ul><li>- [ ] Done</li></ul>|16|[Shake Shake Shaky](http://www.spoj.com/problems/MAIN8_C/)|SPOJ|||1|\n|<ul><li>- [ ] Done</li></ul>|17|[Exact Sum](https://uva.onlinejudge.org/index.php?option=onlinejudge&page=show_problem&problem=1998)|UVA|||1|\n|<ul><li>- [ ] Done</li></ul>|18|[4 Values whose Sum is 0](http://acm.tju.edu.cn/toj/showp2407.html)|TJU|||1|\n|<ul><li>- [ ] Done</li></ul>|19|[Solve It](https://uva.onlinejudge.org/index.php?option=onlinejudge&page=show_problem&problem=1282)|UVA|||1|\n|<ul><li>- [ ] Done</li></ul>|20|[Touch of Venom](http://www.spoj.com/problems/VENOM/)|SPOJ|||1|\n|<ul><li>- [ ] Done</li></ul>|21|[The Playboy Chimp](https://uva.onlinejudge.org/index.php?option=onlinejudge&page=show_problem&problem=1552)|UVA|||1|\n|<ul><li>- [ ] Done</li></ul>|22|[Where is the Marble?](https://uva.onlinejudge.org/index.php?option=onlinejudge&page=show_problem&problem=1415)|UVA|||1|\n|<ul><li>- [ ] Done</li></ul>|23|[Books](http://codeforces.com/problemset/problem/279/B)|Codeforces||Codeforces Round #171 (Div. 2)|1|\n|<ul><li>- [ ] Done</li></ul>|24|[Cable master](http://poj.org/problem?id=1064)|PKU|||1|\n|<ul><li>- [ ] Done</li></ul>|25|[Aggressive cows](http://poj.org/problem?id=2456)|PKU|||1|\n|<ul><li>- [ ] Done</li></ul>|26|[River Hopscotch](http://poj.org/problem?id=3258)|PKU|||1|\n|<ul><li>- [ ] Done</li></ul>|27|[Monthly Expense](http://poj.org/problem?id=3273)|PKU|||1|\n|<ul><li>- [ ] Done</li></ul>|28|[Queries about less or equal elements](http://codeforces.com/problemset/problem/600/B)|Codeforces||Educational Codeforces Round 2|1|\n|<ul><li>- [ ] Done</li></ul>|29|[Kefa and Company](http://codeforces.com/problemset/problem/580/B)|Codeforces||Codeforces Round #321 (Div. 2)|1|\n|<ul><li>- [ ] Done</li></ul>|30|[Vanya and Lanterns](http://codeforces.com/problemset/problem/492/B)|Codeforces||Codeforces Round #280 (Div. 2)|1|\n|<ul><li>- [ ] Done</li></ul>|31|[Worms](http://codeforces.com/problemset/problem/474/B)|Codeforces||Codeforces Round #271 (Div. 2)|1|\n|<ul><li>- [ ] Done</li></ul>|32|[Number of Ways](http://codeforces.com/problemset/problem/466/C)|Codeforces||Codeforces Round #266 (Div. 2)|1|\n|<ul><li>- [ ] Done</li></ul>|33|[Binary Search Tree](https://icpcarchive.ecs.baylor.edu/index.php?option=onlinejudge&page=show_problem&problem=2848)|Live Archive|2010|Asia - Daejeon|1|\n|<ul><li>- [ ] Done</li></ul>|34|[Interesting drink](http://codeforces.com/problemset/problem/706/B)|Codeforces||Codeforces Round #367 (Div. 2)|1|\n|<ul><li>- [ ] Done</li></ul>|35|[Chloe and the sequence ](http://codeforces.com/problemset/problem/743/B)|Codeforces||Codeforces Round #384 (Div. 2)|1|\n|<ul><li>- [ ] Done</li></ul>|36|[GCD LCM](https://uva.onlinejudge.org/index.php?option=onlinejudge&page=show_problem&problem=2383)|UVA|||1|\n|<ul><li>- [ ] Done</li></ul>|37|[Prime Frequency](https://uva.onlinejudge.org/index.php?option=onlinejudge&page=show_problem&problem=1730)|UVA|||1|\n|<ul><li>- [ ] Done</li></ul>|38|[Ternary](https://uva.onlinejudge.org/index.php?option=onlinejudge&page=show_problem&problem=2126)|UVA|||1|\n|<ul><li>- [ ] Done</li></ul>|39|[DZY Loves Chessboard](http://codeforces.com/problemset/problem/445/A)|Codeforces||Codeforces Round #254 (Div. 2)|1|\n|<ul><li>- [ ] Done</li></ul>|40|[Crossed Ladders](https://uva.onlinejudge.org/index.php?option=onlinejudge&page=show_problem&problem=1507)|UVA|||2|\n|<ul><li>- [ ] Done</li></ul>|41|[Burning Midnight Oil](http://codeforces.com/problemset/problem/165/B)|Codeforces||Codeforces Round #112 (Div. 2)|2|\n|<ul><li>- [ ] Done</li></ul>|42|[Mummy Madness](https://icpcarchive.ecs.baylor.edu/index.php?option=onlinejudge&page=show_problem&problem=3137)|Live Archive|2011|World Finals - Orlando|2|\n|<ul><li>- [ ] Done</li></ul>|43|[Copying Books](https://uva.onlinejudge.org/index.php?option=onlinejudge&page=show_problem&problem=655)|UVA|||2|\n|<ul><li>- [ ] Done</li></ul>|44|[Points on Line](http://codeforces.com/problemset/problem/251/A)|Codeforces||Codeforces Round #153 (Div. 1) & Codeforces Round #153 (Div. 2)|2|\n|<ul><li>- [ ] Done</li></ul>|45|[Rank List](http://codeforces.com/problemset/problem/166/A)|Codeforces||Codeforces Round #113 (Div. 2)|2|\n|<ul><li>- [ ] Done</li></ul>|46|[Password](http://codeforces.com/problemset/problem/126/B)|Codeforces||Codeforces Beta Round #93 (Div. 1 Only) & Codeforces Beta Round #93 (Div. 2 Only)|2|\n|<ul><li>- [ ] Done</li></ul>|47|[Lucky Numbers (easy)](http://codeforces.com/problemset/problem/96/B)|Codeforces||Codeforces Beta Round #77 (Div. 2 Only)|2|\n|<ul><li>- [ ] Done</li></ul>|48|[Distributing Ballot Boxes](http://www.spoj.com/problems/BALLOT/)|SPOJ|||2|\n|<ul><li>- [ ] Done</li></ul>|49|[Fill the Containers](https://uva.onlinejudge.org/index.php?option=onlinejudge&page=show_problem&problem=2408)|UVA|||2|\n|<ul><li>- [ ] Done</li></ul>|50|[Popes](https://uva.onlinejudge.org/index.php?option=onlinejudge&page=show_problem&problem=898)|UVA|||2|\n|<ul><li>- [ ] Done</li></ul>|51|[Multiplication Table](http://codeforces.com/problemset/problem/448/D)|Codeforces||Codeforces Round #256 (Div. 2)|2|\n|<ul><li>- [ ] Done</li></ul>|52|[More Cowbell](http://codeforces.com/problemset/problem/604/B)|Codeforces||Codeforces Round #334 (Div. 2)|2|\n|<ul><li>- [ ] Done</li></ul>|53|[Drying](http://poj.org/problem?id=3104)|PKU|||2|\n|<ul><li>- [ ] Done</li></ul>|54|[Dropping tests](http://poj.org/problem?id=2976)|PKU|||2|\n|<ul><li>- [ ] Done</li></ul>|55|[K Best](http://poj.org/problem?id=3111)|PKU|||2|\n|<ul><li>- [ ] Done</li></ul>|56|[Median](http://poj.org/problem?id=3579)|PKU|||2|\n|<ul><li>- [ ] Done</li></ul>|57|[Moo University - Financial Aid](http://poj.org/problem?id=2010)|PKU|||2|\n|<ul><li>- [ ] Done</li></ul>|58|[Chat Order](http://codeforces.com/problemset/problem/637/B)|Codeforces||VK Cup 2016 - Qualification Round 1|2|\n|<ul><li>- [ ] Done</li></ul>|59|[Chain Reaction](http://codeforces.com/problemset/problem/607/A)|Codeforces||Codeforces Round #336 (Div. 1) & Codeforces Round #336 (Div. 2)|2|\n|<ul><li>- [ ] Done</li></ul>|60|[Geometric Progression](http://codeforces.com/problemset/problem/567/C)|Codeforces||Codeforces Round #Pi (Div. 2)|2|\n|<ul><li>- [ ] Done</li></ul>|61|[Tourist's Notes](http://codeforces.com/problemset/problem/538/C)|Codeforces||Codeforces Round #300|2|\n|<ul><li>- [ ] Done</li></ul>|62|[Counting Kangaroos is Fun](http://codeforces.com/problemset/problem/372/A)|Codeforces||Codeforces Round #219 (Div. 1) & Codeforces Round #219 (Div. 2)|2|\n|<ul><li>- [ ] Done</li></ul>|63|[Hamburgers](http://codeforces.com/problemset/problem/371/C)|Codeforces||Codeforces Round #218 (Div. 2)|2|\n|<ul><li>- [ ] Done</li></ul>|64|[Mafia](http://codeforces.com/problemset/problem/348/A)|Codeforces||Codeforces Round #202 (Div. 1) & Codeforces Round #202 (Div. 2)|2|\n|<ul><li>- [ ] Done</li></ul>|65|[Polo the Penguin and Matrix](http://codeforces.com/problemset/problem/289/B)|Codeforces||Codeforces Round #177 (Div. 2)|2|\n|<ul><li>- [ ] Done</li></ul>|66|[k-Multiple Free Set](http://codeforces.com/problemset/problem/274/A)|Codeforces||Codeforces Round #168 (Div. 1) & Codeforces Round #168 (Div. 2)|2|\n|<ul><li>- [ ] Done</li></ul>|67|[Prime Matrix](http://codeforces.com/problemset/problem/271/B)|Codeforces||Codeforces Round #166 (Div. 2)|2|\n|<ul><li>- [ ] Done</li></ul>|68|[Another Problem on Strings](http://codeforces.com/problemset/problem/165/C)|Codeforces||Codeforces Round #112 (Div. 2)|2|\n|<ul><li>- [ ] Done</li></ul>|69|[Vasya and String](http://codeforces.com/problemset/problem/676/C)|Codeforces||Codeforces Round #354 (Div. 2)|2|\n|<ul><li>- [ ] Done</li></ul>|70|[New Year and Rating](http://codeforces.com/problemset/problem/750/C)|Codeforces||Good Bye 2016|2|\n|<ul><li>- [ ] Done</li></ul>|71|[String Game](http://codeforces.com/problemset/problem/778/A)|Codeforces||Codeforces Round #402 (Div. 1) & Codeforces Round #402 (Div. 2)|2|\n|<ul><li>- [ ] Done</li></ul>|72|[Karen and Coffee](http://codeforces.com/problemset/problem/816/B)|Codeforces||Codeforces Round #419 (Div. 2)|2|\n|<ul><li>- [ ] Done</li></ul>|73|[Sagheer and Nubian Market](http://codeforces.com/problemset/problem/812/C)|Codeforces||Codeforces Round #417 (Div. 2)|2|\n|<ul><li>- [ ] Done</li></ul>|74|[Anton and Fairy Tale](http://codeforces.com/problemset/problem/785/C)|Codeforces||Codeforces Round #404 (Div. 2)|2|\n|<ul><li>- [ ] Done</li></ul>|75|[Binary Search Tree](http://www.spoj.com/problems/BST/)|SPOJ|||2|\n|<ul><li>- [ ] Done</li></ul>|76|[ICPC Scoreboard](https://icpcarchive.ecs.baylor.edu/index.php?option=onlinejudge&page=show_problem&problem=1936)|Live Archive|2007|Latin America - South America|2|\n|<ul><li>- [ ] Done</li></ul>|77|[Meteors](http://www.spoj.com/problems/METEORS/)|SPOJ|||2|\n|<ul><li>- [ ] Done</li></ul>|78|[Funny scales](http://www.spoj.com/problems/SCALE/)|SPOJ|||2|\n|<ul><li>- [ ] Done</li></ul>|79|[ICPC Scoreboard](http://www.spoj.com/problems/ICPCS/)|SPOJ|||3|\n|<ul><li>- [ ] Done</li></ul>|80|[Physics Practical](http://codeforces.com/problemset/problem/253/B)|Codeforces||Codeforces Round #154 (Div. 2)|3|\n|<ul><li>- [ ] Done</li></ul>|81|[Primes on Interval](http://codeforces.com/problemset/problem/237/C)|Codeforces||Codeforces Round #147 (Div. 2)|3|\n|<ul><li>- [ ] Done</li></ul>|82|[Non-square Equation](http://codeforces.com/problemset/problem/233/B)|Codeforces||Codeforces Round #144 (Div. 2)|3|\n|<ul><li>- [ ] Done</li></ul>|83|[To Add or Not to Add](http://codeforces.com/problemset/problem/231/C)|Codeforces||Codeforces Round #143 (Div. 2)|3|\n|<ul><li>- [ ] Done</li></ul>|84|[Array](http://codeforces.com/problemset/problem/224/B)|Codeforces||Codeforces Round #138 (Div. 2)|3|\n|<ul><li>- [ ] Done</li></ul>|85|[Little Elephant and Array](http://codeforces.com/problemset/problem/220/B)|Codeforces||Codeforces Round #136 (Div. 1) & Codeforces Round #136 (Div. 2)|3|\n|<ul><li>- [ ] Done</li></ul>|86|[Little Elephant and Interval](http://codeforces.com/problemset/problem/204/A)|Codeforces||Codeforces Round #129 (Div. 1) & Codeforces Round #129 (Div. 2)|3|\n|<ul><li>- [ ] Done</li></ul>|87|[Let's Watch Football](http://codeforces.com/problemset/problem/195/A)|Codeforces||Codeforces Round #123 (Div. 2)|3|\n|<ul><li>- [ ] Done</li></ul>|88|[Funky Numbers](http://codeforces.com/problemset/problem/192/A)|Codeforces||Codeforces Round #121 (Div. 2)|3|\n|<ul><li>- [ ] Done</li></ul>|89|[Roads Repair](http://www.spoj.com/problems/MROADS/)|SPOJ|||3|\n|<ul><li>- [ ] Done</li></ul>|90|[grace marks](http://www.spoj.com/problems/MTHUR/)|SPOJ|||3|\n|<ul><li>- [ ] Done</li></ul>|91|[Trick or Treat](http://www.spoj.com/problems/TRICKTRT/)|SPOJ|||3|\n|<ul><li>- [ ] Done</li></ul>|92|[Glasnici](http://www.spoj.com/problems/GLASNICI/)|SPOJ|||3|\n|<ul><li>- [ ] Done</li></ul>|93|[Towers of Hanoi](https://uva.onlinejudge.org/index.php?option=onlinejudge&page=show_problem&problem=190)|UVA|||3|\n|<ul><li>- [ ] Done</li></ul>|94|[Through the Desert](https://uva.onlinejudge.org/index.php?option=onlinejudge&page=show_problem&problem=3086)|UVA|||3|\n|<ul><li>- [ ] Done</li></ul>|95|[Vasya and Basketball](http://codeforces.com/problemset/problem/493/C)|Codeforces||Codeforces Round #281 (Div. 2)|3|\n|<ul><li>- [ ] Done</li></ul>|96|[Fantastic Discovery](http://www.spoj.com/problems/IMMERSED/)|SPOJ|||3|\n|<ul><li>- [ ] Done</li></ul>|97|[Cow Acrobats](http://poj.org/problem?id=3045)|PKU|||3|\n|<ul><li>- [ ] Done</li></ul>|98|[Matrix](http://poj.org/problem?id=3685)|PKU|||3|\n|<ul><li>- [ ] Done</li></ul>|99|[Telephone Lines](http://poj.org/problem?id=3662)|PKU|||3|\n|<ul><li>- [ ] Done</li></ul>|100|[Hard Process](http://codeforces.com/problemset/problem/660/C)|Codeforces||Educational Codeforces Round 11|3|\n|<ul><li>- [ ] Done</li></ul>|101|[Bear and Blocks](http://codeforces.com/problemset/problem/573/B)|Codeforces||Codeforces Round #318 [RussianCodeCup Thanks-Round] (Div. 1) & Codeforces Round #318 [RussianCodeCup Thanks-Round] (Div. 2)|3|\n|<ul><li>- [ ] Done</li></ul>|102|[Mike and Feet](http://codeforces.com/problemset/problem/547/B)|Codeforces||Codeforces Round #305 (Div. 1) & Codeforces Round #305 (Div. 2)|3|\n|<ul><li>- [ ] Done</li></ul>|103|[Glass Carving](http://codeforces.com/problemset/problem/527/C)|Codeforces||Codeforces Round #296 (Div. 2) & Codeforces Round #296 (Div. 1)|3|\n|<ul><li>- [ ] Done</li></ul>|104|[Watto and Mechanism](http://codeforces.com/problemset/problem/514/C)|Codeforces||Codeforces Round #291 (Div. 2)|3|\n|<ul><li>- [ ] Done</li></ul>|105|[Maximum Value](http://codeforces.com/problemset/problem/484/B)|Codeforces||Codeforces Round #276 (Div. 1) & Codeforces Round #276 (Div. 2)|3|\n|<ul><li>- [ ] Done</li></ul>|106|[Long Jumps](http://codeforces.com/problemset/problem/479/D)|Codeforces||Codeforces Round #274 (Div. 2) & Codeforces Round #274 (Div. 1)|3|\n|<ul><li>- [ ] Done</li></ul>|107|[Present](http://codeforces.com/problemset/problem/460/C)|Codeforces||Codeforces Round #262 (Div. 2)|3|\n|<ul><li>- [ ] Done</li></ul>|108|[Megacity](http://codeforces.com/problemset/problem/424/B)|Codeforces||Codeforces Round #242 (Div. 2)|3|\n|<ul><li>- [ ] Done</li></ul>|109|[Booking System](http://codeforces.com/problemset/problem/416/C)|Codeforces||Codeforces Round #241 (Div. 2)|3|\n|<ul><li>- [ ] Done</li></ul>|110|[Mashmokh and Tokens](http://codeforces.com/problemset/problem/415/B)|Codeforces||Codeforces Round #240 (Div. 2)|3|\n|<ul><li>- [ ] Done</li></ul>|111|[Bear and Prime Numbers](http://codeforces.com/problemset/problem/385/C)|Codeforces||Codeforces Round #226 (Div. 2)|3|\n|<ul><li>- [ ] Done</li></ul>|112|[Bubble Sort Graph](http://codeforces.com/problemset/problem/340/D)|Codeforces||Codeforces Round #198 (Div. 2) & Codeforces Round #198 (Div. 1)|3|\n|<ul><li>- [ ] Done</li></ul>|113|[Quiz](http://codeforces.com/problemset/problem/337/C)|Codeforces||Codeforces Round #196 (Div. 2) & Codeforces Round #196 (Div. 1)|3|\n|<ul><li>- [ ] Done</li></ul>|114|[Eugeny and Play List](http://codeforces.com/problemset/problem/302/B)|Codeforces||Codeforces Round #182 (Div. 2)|3|\n|<ul><li>- [ ] Done</li></ul>|115|[LLPS](http://codeforces.com/problemset/problem/202/A)|Codeforces||Codeforces Round #127 (Div. 2)|3|\n|<ul><li>- [ ] Done</li></ul>|116|[Dress'em in Vests!](http://codeforces.com/problemset/problem/161/A)|Codeforces||VK Cup 2012 Round 1|3|\n|<ul><li>- [ ] Done</li></ul>|117|[Modified GCD](http://codeforces.com/problemset/problem/75/C)|Codeforces||Codeforces Beta Round #67 (Div. 2)|3|\n|<ul><li>- [ ] Done</li></ul>|118|[Grapevine](https://uva.onlinejudge.org/index.php?option=onlinejudge&page=show_problem&problem=3344)|UVA|||3|\n|<ul><li>- [ ] Done</li></ul>|119|[Exams](http://codeforces.com/problemset/problem/732/D)|Codeforces||Codeforces Round #377 (Div. 2)|3|\n|<ul><li>- [ ] Done</li></ul>|120|[Alyona and Spreadsheet](http://codeforces.com/problemset/problem/777/C)|Codeforces||Codeforces Round #401 (Div. 2)|3|\n|<ul><li>- [ ] Done</li></ul>|121|[Cloud of Hashtags](http://codeforces.com/problemset/problem/777/D)|Codeforces||Codeforces Round #401 (Div. 2)|3|\n|<ul><li>- [ ] Done</li></ul>|122|[Vasiliy's Multiset](http://codeforces.com/problemset/problem/706/D)|Codeforces||Codeforces Round #367 (Div. 2)|3|\n|<ul><li>- [ ] Done</li></ul>|123|[Planets](http://codeforces.com/problemset/problem/229/B)|Codeforces||Codeforces Round #142 (Div. 1) & Codeforces Round #142 (Div. 2)|4|\n|<ul><li>- [ ] Done</li></ul>|124|[Well-known Numbers](http://codeforces.com/problemset/problem/225/B)|Codeforces||Codeforces Round #139 (Div. 2)|4|\n|<ul><li>- [ ] Done</li></ul>|125|[Little Elephant and Cards](http://codeforces.com/problemset/problem/204/B)|Codeforces||Codeforces Round #129 (Div. 1) & Codeforces Round #129 (Div. 2)|4|\n|<ul><li>- [ ] Done</li></ul>|126|[Find Pair](http://codeforces.com/problemset/problem/160/C)|Codeforces||Codeforces Round #111 (Div. 2)|4|\n|<ul><li>- [ ] Done</li></ul>|127|[String Manipulation 1.0](http://codeforces.com/problemset/problem/159/C)|Codeforces||VK Cup 2012 Qualification Round 2|4|\n|<ul><li>- [ ] Done</li></ul>|128|[Matchmaker](http://codeforces.com/problemset/problem/159/B)|Codeforces||VK Cup 2012 Qualification Round 2|4|\n|<ul><li>- [ ] Done</li></ul>|129|[Steps](http://codeforces.com/problemset/problem/152/B)|Codeforces||Codeforces Round #108 (Div. 2)|4|\n|<ul><li>- [ ] Done</li></ul>|130|[Escape](http://codeforces.com/problemset/problem/148/B)|Codeforces||Codeforces Round #105 (Div. 2)|4|\n|<ul><li>- [ ] Done</li></ul>|131|[New Year Snowmen](http://codeforces.com/problemset/problem/140/C)|Codeforces||Codeforces Round #100|4|\n|<ul><li>- [ ] Done</li></ul>|132|[Queue](http://codeforces.com/problemset/problem/91/B)|Codeforces||Codeforces Beta Round #75 (Div. 1 Only) & Codeforces Beta Round #75 (Div. 2 Only)|4|\n|<ul><li>- [ ] Done</li></ul>|133|[Binary Number](http://codeforces.com/problemset/problem/92/B)|Codeforces||Codeforces Beta Round #75 (Div. 2 Only)|4|\n|<ul><li>- [ ] Done</li></ul>|134|[Garland](http://poj.org/problem?id=1759)|PKU|||4|\n|<ul><li>- [ ] Done</li></ul>|135|[Image Preview](http://codeforces.com/problemset/problem/650/B)|Codeforces||Codeforces Round #345 (Div. 1) & Codeforces Round #345 (Div. 2)|4|\n|<ul><li>- [ ] Done</li></ul>|136|[Longest k-Good Segment](http://codeforces.com/problemset/problem/616/D)|Codeforces||Educational Codeforces Round 5|4|\n|<ul><li>- [ ] Done</li></ul>|137|[Peter and Snow Blower](http://codeforces.com/problemset/problem/613/A)|Codeforces||Codeforces Round #339 (Div. 1) & Codeforces Round #339 (Div. 2)|4|\n|<ul><li>- [ ] Done</li></ul>|138|[Pasha and Phone](http://codeforces.com/problemset/problem/595/B)|Codeforces||Codeforces Round #330 (Div. 2)|4|\n|<ul><li>- [ ] Done</li></ul>|139|[Weakness and Poorness](http://codeforces.com/problemset/problem/578/C)|Codeforces||Codeforces Round #320 (Div. 1) [Bayan Thanks-Round] & Codeforces Round #320 (Div. 2) [Bayan Thanks-Round]|4|\n|<ul><li>- [ ] Done</li></ul>|140|[Tree Requests](http://codeforces.com/problemset/problem/570/D)|Codeforces||Codeforces Round #316 (Div. 2)|4|\n|<ul><li>- [ ] Done</li></ul>|141|[One-Dimensional Battle Ships](http://codeforces.com/problemset/problem/567/D)|Codeforces||Codeforces Round #Pi (Div. 2)|4|\n|<ul><li>- [ ] Done</li></ul>|142|[GukiZ hates Boxes](http://codeforces.com/problemset/problem/551/C)|Codeforces||Codeforces Round #307 (Div. 2)|4|\n|<ul><li>- [ ] Done</li></ul>|143|[Tavas and Karafs](http://codeforces.com/problemset/problem/535/C)|Codeforces||Codeforces Round #299 (Div. 2) & Codeforces Round #299 (Div. 1)|4|\n|<ul><li>- [ ] Done</li></ul>|144|[A and B and Lecture Rooms](http://codeforces.com/problemset/problem/519/E)|Codeforces||Codeforces Round #294 (Div. 2)|4|\n|<ul><li>- [ ] Done</li></ul>|145|[Tennis Game](http://codeforces.com/problemset/problem/496/D)|Codeforces||Codeforces Round #283 (Div. 2) & Codeforces Round #283 (Div. 1)|4|\n|<ul><li>- [ ] Done</li></ul>|146|[Vanya and Computer Game](http://codeforces.com/problemset/problem/492/D)|Codeforces||Codeforces Round #280 (Div. 2)|4|\n|<ul><li>- [ ] Done</li></ul>|147|[Fight the Monster](http://codeforces.com/problemset/problem/487/A)|Codeforces||Codeforces Round #278 (Div. 1) & Codeforces Round #278 (Div. 2)|4|\n|<ul><li>- [ ] Done</li></ul>|148|[Friends and Presents](http://codeforces.com/problemset/problem/483/B)|Codeforces||Codeforces Round #275 (Div. 2)|4|\n|<ul><li>- [ ] Done</li></ul>|149|[MUH and House of Cards](http://codeforces.com/problemset/problem/471/C)|Codeforces||Codeforces Round #269 (Div. 2)|4|\n|<ul><li>- [ ] Done</li></ul>|150|[Civilization](http://codeforces.com/problemset/problem/455/C)|Codeforces||Codeforces Round #260 (Div. 1) & Codeforces Round #260 (Div. 2)|4|\n|<ul><li>- [ ] Done</li></ul>|151|[Devu and his Brother](http://codeforces.com/problemset/problem/439/D)|Codeforces||Codeforces Round #251 (Div. 2)|4|\n|<ul><li>- [ ] Done</li></ul>|152|[Sereja and Prefixes](http://codeforces.com/problemset/problem/380/A)|Codeforces||Codeforces Round #223 (Div. 1) & Codeforces Round #223 (Div. 2)|4|\n|<ul><li>- [ ] Done</li></ul>|153|[Pair of Numbers](http://codeforces.com/problemset/problem/359/D)|Codeforces||Codeforces Round #209 (Div. 2)|4|\n|<ul><li>- [ ] Done</li></ul>|154|[Ciel and Robot](http://codeforces.com/problemset/problem/321/A)|Codeforces||Codeforces Round #190 (Div. 1) & Codeforces Round #190 (Div. 2)|4|\n|<ul><li>- [ ] Done</li></ul>|155|[Pipeline](http://codeforces.com/problemset/problem/287/B)|Codeforces||Codeforces Round #176 (Div. 2)|4|\n|<ul><li>- [ ] Done</li></ul>|156|[Petya and Divisors](http://codeforces.com/problemset/problem/111/B)|Codeforces||Codeforces Beta Round #85 (Div. 1 Only) & Codeforces Beta Round #85 (Div. 2 Only)|4|\n|<ul><li>- [ ] Done</li></ul>|157|[Almost Arithmetical Progression](http://codeforces.com/problemset/problem/255/C)|Codeforces||Codeforces Round #156 (Div. 2) & Codeforces Round #156 (Div. 1)|4|\n|<ul><li>- [ ] Done</li></ul>|158|[Robin Hood](http://codeforces.com/problemset/problem/671/B)|Codeforces||Codeforces Round #352 (Div. 1) & Codeforces Round #352 (Div. 2)|4|\n|<ul><li>- [ ] Done</li></ul>|159|[As Fast As Possible](http://codeforces.com/problemset/problem/700/A)|Codeforces||Codeforces Round #364 (Div. 1) & Codeforces Round #364 (Div. 2)|4|\n|<ul><li>- [ ] Done</li></ul>|160|[Office Keys](http://codeforces.com/problemset/problem/830/A)|Codeforces||Codeforces Round #424 (Div. 1, rated, based on VK Cup Finals) & Codeforces Round #424 (Div. 2, rated, based on VK Cup Finals)|4|\n|<ul><li>- [ ] Done</li></ul>|161|[Alyona and a tree](http://codeforces.com/problemset/problem/739/B)|Codeforces||Codeforces Round #381 (Div. 1) & Codeforces Round #381 (Div. 2)|4|\n|<ul><li>- [ ] Done</li></ul>|162|[Mike and Chocolate Thieves](http://codeforces.com/problemset/problem/689/C)|Codeforces||Codeforces Round #361 (Div. 2)|4|\n|<ul><li>- [ ] Done</li></ul>|163|[XK Segments](http://codeforces.com/problemset/problem/895/B)|Codeforces||Codeforces Round #448 (Div. 2)|4|\n|<ul><li>- [ ] Done</li></ul>|164|[Showstopper](http://www.spoj.com/problems/MSE07E/)|SPOJ|||5|\n|<ul><li>- [ ] Done</li></ul>|165|[Energy exchange](http://codeforces.com/problemset/problem/68/B)|Codeforces||Codeforces Beta Round #62|5|\n|<ul><li>- [ ] Done</li></ul>|166|[Guilty --- to the kitchen!](http://codeforces.com/problemset/problem/42/A)|Codeforces||Codeforces Beta Round #41|5|\n|<ul><li>- [ ] Done</li></ul>|167|[Unordered Subsequence](http://codeforces.com/problemset/problem/27/C)|Codeforces||Codeforces Beta Round #27 (Codeforces format, Div. 2)|5|\n|<ul><li>- [ ] Done</li></ul>|168|[Monitor](http://codeforces.com/problemset/problem/16/C)|Codeforces||Codeforces Beta Round #16 (Div. 2 Only)|5|\n|<ul><li>- [ ] Done</li></ul>|169|[Exposition](http://codeforces.com/problemset/problem/6/E)|Codeforces||Codeforces Beta Round #6 (Div. 2 Only)|5|\n|<ul><li>- [ ] Done</li></ul>|170|[Showstopper](http://poj.org/problem?id=3484)|PKU|||5|\n|<ul><li>- [ ] Done</li></ul>|171|[Robot Rapping Results Report](http://codeforces.com/problemset/problem/645/D)|Codeforces||CROC 2016 - Elimination Round|5|\n|<ul><li>- [ ] Done</li></ul>|172|[Enduring Exodus](http://codeforces.com/problemset/problem/645/C)|Codeforces||CROC 2016 - Elimination Round|5|\n|<ul><li>- [ ] Done</li></ul>|173|[Skills](http://codeforces.com/problemset/problem/613/B)|Codeforces||Codeforces Round #339 (Div. 1) & Codeforces Round #339 (Div. 2)|5|\n|<ul><li>- [ ] Done</li></ul>|174|[Chip 'n Dale Rescue Rangers](http://codeforces.com/problemset/problem/590/B)|Codeforces||Codeforces Round #327 (Div. 1) & Codeforces Round #327 (Div. 2)|5|\n|<ul><li>- [ ] Done</li></ul>|175|[Gourmet and Banquet](http://codeforces.com/problemset/problem/589/F)|Codeforces||2015-2016 ACM-ICPC, NEERC, Southern Subregional Contest (Online Mirror, ACM-ICPC Rules, Teams Preferred)|5|\n|<ul><li>- [ ] Done</li></ul>|176|[Kyoya and Permutation](http://codeforces.com/problemset/problem/553/B)|Codeforces||Codeforces Round #309 (Div. 1) & Codeforces Round #309 (Div. 2)|5|\n|<ul><li>- [ ] Done</li></ul>|177|[Degenerate Matrix](http://codeforces.com/problemset/problem/549/H)|Codeforces||Looksery Cup 2015|5|\n|<ul><li>- [ ] Done</li></ul>|178|[Handshakes](http://codeforces.com/problemset/problem/534/D)|Codeforces||Codeforces Round #298 (Div. 2)|5|\n|<ul><li>- [ ] Done</li></ul>|179|[The Art of Dealing with ATM](http://codeforces.com/problemset/problem/524/C)|Codeforces||VK Cup 2015 - Round 1|5|\n|<ul><li>- [ ] Done</li></ul>|180|[R2D2 and Droid Army](http://codeforces.com/problemset/problem/514/D)|Codeforces||Codeforces Round #291 (Div. 2)|5|\n|<ul><li>- [ ] Done</li></ul>|181|[Strip](http://codeforces.com/problemset/problem/487/B)|Codeforces||Codeforces Round #278 (Div. 1) & Codeforces Round #278 (Div. 2)|5|\n|<ul><li>- [ ] Done</li></ul>|182|[Pillars](http://codeforces.com/problemset/problem/474/E)|Codeforces||Codeforces Round #271 (Div. 2)|5|\n|<ul><li>- [ ] Done</li></ul>|183|[Preparing for the Contest](http://codeforces.com/problemset/problem/377/B)|Codeforces||Codeforces Round #222 (Div. 1) & Codeforces Round #222 (Div. 2)|5|\n|<ul><li>- [ ] Done</li></ul>|184|[Making Sequences is Fun](http://codeforces.com/problemset/problem/373/B)|Codeforces||Codeforces Round #219 (Div. 2)|5|\n|<ul><li>- [ ] Done</li></ul>|185|[Sereja ans Anagrams](http://codeforces.com/problemset/problem/367/B)|Codeforces||Codeforces Round #215 (Div. 1) & Codeforces Round #215 (Div. 2)|5|\n|<ul><li>- [ ] Done</li></ul>|186|[Renting Bikes](http://codeforces.com/problemset/problem/363/D)|Codeforces||Codeforces Round #211 (Div. 2)|5|\n|<ul><li>- [ ] Done</li></ul>|187|[Levko and Array](http://codeforces.com/problemset/problem/360/B)|Codeforces||Codeforces Round #210 (Div. 1) & Codeforces Round #210 (Div. 2)|5|\n|<ul><li>- [ ] Done</li></ul>|188|[Read Time](http://codeforces.com/problemset/problem/343/C)|Codeforces||Codeforces Round #200 (Div. 1) & Codeforces Round #200 (Div. 2)|5|\n|<ul><li>- [ ] Done</li></ul>|189|[Yaroslav and Time](http://codeforces.com/problemset/problem/301/B)|Codeforces||Codeforces Round #182 (Div. 1) & Codeforces Round #182 (Div. 2)|5|\n|<ul><li>- [ ] Done</li></ul>|190|[Cycles](http://codeforces.com/problemset/problem/232/A)|Codeforces||Codeforces Round #144 (Div. 1) & Codeforces Round #144 (Div. 2)|5|\n|<ul><li>- [ ] Done</li></ul>|191|[Olympiad](http://codeforces.com/problemset/problem/222/D)|Codeforces||Codeforces Round #137 (Div. 2)|5|\n|<ul><li>- [ ] Done</li></ul>|192|[Blood Cousins](http://codeforces.com/problemset/problem/208/E)|Codeforces||Codeforces Round #130 (Div. 2)|5|\n|<ul><li>- [ ] Done</li></ul>|193|[Misha and Permutations Summation](http://codeforces.com/problemset/problem/501/D)|Codeforces||Codeforces Round #285 (Div. 2) & Codeforces Round #285 (Div. 1)|5|\n|<ul><li>- [ ] Done</li></ul>|194|[Road to Post Office](http://codeforces.com/problemset/problem/702/D)|Codeforces||Educational Codeforces Round 15|5|\n|<ul><li>- [ ] Done</li></ul>|195|[Copying Data](http://codeforces.com/problemset/problem/292/E)|Codeforces||Croc Champ 2013 - Round 1|5|\n|<ul><li>- [ ] Done</li></ul>|196|[The Bakery](http://codeforces.com/problemset/problem/833/B)|Codeforces||Codeforces Round #426 (Div. 1) & Codeforces Round #426 (Div. 2)|5|\n|<ul><li>- [ ] Done</li></ul>|197|[Complete The Graph](http://codeforces.com/problemset/problem/715/B)|Codeforces||Codeforces Round #372 (Div. 1) & Codeforces Round #372 (Div. 2)|5|\n|<ul><li>- [ ] Done</li></ul>|198|[Leaving Auction](http://codeforces.com/problemset/problem/749/D)|Codeforces||Codeforces Round #388 (Div. 2)|5|\n|<ul><li>- [ ] Done</li></ul>|199|[Cartons of milk](http://codeforces.com/problemset/problem/767/D)|Codeforces||Codeforces Round #398 (Div. 2)|5|\n|<ul><li>- [ ] Done</li></ul>|200|[Fedor and coupons](http://codeforces.com/problemset/problem/754/D)|Codeforces||Codeforces Round #390 (Div. 2)|5|\n|<ul><li>- [ ] Done</li></ul>|201|[Vitya and Strange Lesson](http://codeforces.com/problemset/problem/842/D)|Codeforces||Codeforces Round #430 (Div. 2)|5|\n|<ul><li>- [ ] Done</li></ul>|202|[Friends and Subsequences](http://codeforces.com/problemset/problem/689/D)|Codeforces||Codeforces Round #361 (Div. 2)|5|\n|<ul><li>- [ ] Done</li></ul>|203|[Little Elephant and LCM](http://codeforces.com/problemset/problem/258/C)|Codeforces||Codeforces Round #157 (Div. 1) & Codeforces Round #157 (Div. 2)|6|\n|<ul><li>- [ ] Done</li></ul>|204|[Mr. Bender and Square](http://codeforces.com/problemset/problem/255/D)|Codeforces||Codeforces Round #156 (Div. 2) & Codeforces Round #156 (Div. 1)|6|\n|<ul><li>- [ ] Done</li></ul>|205|[Towers](http://codeforces.com/problemset/problem/229/D)|Codeforces||Codeforces Round #142 (Div. 1)|6|\n|<ul><li>- [ ] Done</li></ul>|206|[Guess That Car!](http://codeforces.com/problemset/problem/201/B)|Codeforces||Codeforces Round #127 (Div. 1) & Codeforces Round #127 (Div. 2)|6|\n|<ul><li>- [ ] Done</li></ul>|207|[Mushroom Scientists](http://codeforces.com/problemset/problem/185/B)|Codeforces||Codeforces Round #118 (Div. 1) & Codeforces Round #118 (Div. 2)|6|\n|<ul><li>- [ ] Done</li></ul>|208|[Number of Triplets](http://codeforces.com/problemset/problem/181/B)|Codeforces||Croc Champ 2012 - Round 2 (Unofficial Div. 2 Edition)|6|\n|<ul><li>- [ ] Done</li></ul>|209|[Hot Bath](http://codeforces.com/problemset/problem/126/A)|Codeforces||Codeforces Beta Round #93 (Div. 1 Only) & Codeforces Beta Round #93 (Div. 2 Only)|6|\n|<ul><li>- [ ] Done</li></ul>|210|[Buses](http://codeforces.com/problemset/problem/101/B)|Codeforces||Codeforces Beta Round #79 (Div. 1 Only) & Codeforces Beta Round #79 (Div. 2 Only)|6|\n|<ul><li>- [ ] Done</li></ul>|211|[Sum of Medians](http://codeforces.com/problemset/problem/85/D)|Codeforces||Yandex.Algorithm 2011 Round 1|6|\n|<ul><li>- [ ] Done</li></ul>|212|[Doctor](http://codeforces.com/problemset/problem/83/B)|Codeforces||Codeforces Beta Round #72 (Div. 1 Only) & Codeforces Beta Round #72 (Div. 2 Only)|6|\n|<ul><li>- [ ] Done</li></ul>|213|[Tyndex.Brome](http://codeforces.com/problemset/problem/62/B)|Codeforces||Codeforces Beta Round #58|6|\n|<ul><li>- [ ] Done</li></ul>|214|[Stripe 2](http://codeforces.com/problemset/problem/21/C)|Codeforces||Codeforces Alpha Round #21 (Codeforces format)|6|\n|<ul><li>- [ ] Done</li></ul>|215|[Array](http://codeforces.com/problemset/problem/57/C)|Codeforces||Codeforces Beta Round #53|6|\n|<ul><li>- [ ] Done</li></ul>|216|[Boxes of Chocolate](http://www.spoj.com/problems/BOXSCHOC/)|SPOJ|||6|\n|<ul><li>- [ ] Done</li></ul>|217|[CUBE ROOT](http://www.spoj.com/problems/CUBEROO2/)|SPOJ|||6|\n|<ul><li>- [ ] Done</li></ul>|218|[Delivery Bears](http://codeforces.com/problemset/problem/653/D)|Codeforces||IndiaHacks 2016 - Online Edition (Div. 1 + Div. 2)|6|\n|<ul><li>- [ ] Done</li></ul>|219|[Gadgets for dollars and pounds](http://codeforces.com/problemset/problem/609/D)|Codeforces||Educational Codeforces Round 3|6|\n|<ul><li>- [ ] Done</li></ul>|220|[Hiring](http://codeforces.com/problemset/problem/589/G)|Codeforces||2015-2016 ACM-ICPC, NEERC, Southern Subregional Contest (Online Mirror, ACM-ICPC Rules, Teams Preferred)|6|\n|<ul><li>- [ ] Done</li></ul>|221|[GukiZ and GukiZiana](http://codeforces.com/problemset/problem/551/E)|Codeforces||Codeforces Round #307 (Div. 2)|6|\n|<ul><li>- [ ] Done</li></ul>|222|[Infinite Inversions](http://codeforces.com/problemset/problem/540/E)|Codeforces||Codeforces Round #301 (Div. 2)|6|\n|<ul><li>- [ ] Done</li></ul>|223|[Anya and Cubes](http://codeforces.com/problemset/problem/525/E)|Codeforces||Codeforces Round #297 (Div. 2)|6|\n|<ul><li>- [ ] Done</li></ul>|224|[Restoring Increasing Sequence](http://codeforces.com/problemset/problem/490/E)|Codeforces||Codeforces Round #279 (Div. 2)|6|\n|<ul><li>- [ ] Done</li></ul>|225|[Random Task](http://codeforces.com/problemset/problem/431/D)|Codeforces||Codeforces Round #247 (Div. 2)|6|\n|<ul><li>- [ ] Done</li></ul>|226|[Police Patrol](http://codeforces.com/problemset/problem/427/E)|Codeforces||Codeforces Round #244 (Div. 2)|6|\n|<ul><li>- [ ] Done</li></ul>|227|[Fly, freebies, fly!](http://codeforces.com/problemset/problem/386/B)|Codeforces||Testing Round #9|6|\n|<ul><li>- [ ] Done</li></ul>|228|[Number Busters](http://codeforces.com/problemset/problem/382/B)|Codeforces||Codeforces Round #224 (Div. 2)|6|\n|<ul><li>- [ ] Done</li></ul>|229|[Valera and Queries](http://codeforces.com/problemset/problem/369/E)|Codeforces||Codeforces Round #216 (Div. 2)|6|\n|<ul><li>- [ ] Done</li></ul>|230|[Banana](http://codeforces.com/problemset/problem/335/A)|Codeforces||MemSQL start[c]up Round 2 - online version|6|\n|<ul><li>- [ ] Done</li></ul>|231|[Characteristics of Rectangles](http://codeforces.com/problemset/problem/333/D)|Codeforces||Codeforces Round #194 (Div. 1)|6|\n|<ul><li>- [ ] Done</li></ul>|232|[Stadium and Games](http://codeforces.com/problemset/problem/325/B)|Codeforces||MemSQL start[c]up Round 1|6|\n|<ul><li>- [ ] Done</li></ul>|233|[Sereja and Periods](http://codeforces.com/problemset/problem/314/B)|Codeforces||Codeforces Round #187 (Div. 1) & Codeforces Round #187 (Div. 2)|6|\n|<ul><li>- [ ] Done</li></ul>|234|[Santa Claus and Tangerines](http://codeforces.com/problemset/problem/748/E)|Codeforces||Technocup 2017 - Elimination Round 3|6|\n|<ul><li>- [ ] Done</li></ul>|235|[Searching Rectangles](http://codeforces.com/problemset/problem/713/B)|Codeforces||Codeforces Round #371 (Div. 1) & Codeforces Round #371 (Div. 2)|6|\n|<ul><li>- [ ] Done</li></ul>|236|[Glad to see you!](http://codeforces.com/problemset/problem/809/B)|Codeforces||Codeforces Round #415 (Div. 1) & Codeforces Round #415 (Div. 2)|6|\n|<ul><li>- [ ] Done</li></ul>|237|[Vladik and cards](http://codeforces.com/problemset/problem/743/E)|Codeforces||Codeforces Round #384 (Div. 2)|6|\n|<ul><li>- [ ] Done</li></ul>|238|[Binary Search Tree](https://uva.onlinejudge.org/index.php?option=onlinejudge&page=show_problem&problem=3705)|UVA|||6|\n|<ul><li>- [ ] Done</li></ul>|239|[Building Bridge](http://codeforces.com/problemset/problem/250/D)|Codeforces||CROC-MBTU 2012, Final Round (Online version, Div. 2)|7|\n|<ul><li>- [ ] Done</li></ul>|240|[Robo-Footballer](http://codeforces.com/problemset/problem/248/C)|Codeforces||Codeforces Round #152 (Div. 2) & Codeforces Round #152 (Div. 1)|7|\n|<ul><li>- [ ] Done</li></ul>|241|[Blood Cousins Return](http://codeforces.com/problemset/problem/246/E)|Codeforces||Codeforces Round #151 (Div. 2)|7|\n|<ul><li>- [ ] Done</li></ul>|242|[Log Stream Analysis](http://codeforces.com/problemset/problem/245/F)|Codeforces||CROC-MBTU 2012, Elimination Round (ACM-ICPC)|7|\n|<ul><li>- [ ] Done</li></ul>|243|[Spider's Web](http://codeforces.com/problemset/problem/216/D)|Codeforces||Codeforces Round #133 (Div. 2)|7|\n|<ul><li>- [ ] Done</li></ul>|244|[Programming Language](http://codeforces.com/problemset/problem/200/D)|Codeforces||Codeforces Round #126 (Div. 2)|7|\n|<ul><li>- [ ] Done</li></ul>|245|[Cubes](http://codeforces.com/problemset/problem/180/E)|Codeforces||Codeforces Round #116 (Div. 2, ACM-ICPC Rules)|7|\n|<ul><li>- [ ] Done</li></ul>|246|[Lemmings](http://codeforces.com/problemset/problem/163/B)|Codeforces||VK Cup 2012 Round 2|7|\n|<ul><li>- [ ] Done</li></ul>|247|[Mushroom Gnomes - 2](http://codeforces.com/problemset/problem/138/C)|Codeforces||Codeforces Beta Round #99 (Div. 1) & Codeforces Beta Round #99 (Div. 2)|7|\n|<ul><li>- [ ] Done</li></ul>|248|[Biathlon](http://codeforces.com/problemset/problem/84/C)|Codeforces||Codeforces Beta Round #72 (Div. 2 Only)|7|\n|<ul><li>- [ ] Done</li></ul>|249|[Optical Experiment](http://codeforces.com/problemset/problem/67/D)|Codeforces||Manthan 2011|7|\n|<ul><li>- [ ] Done</li></ul>|250|[Harry Potter and the Golden Snitch](http://codeforces.com/problemset/problem/65/C)|Codeforces||Codeforces Beta Round #60|7|\n|<ul><li>- [ ] Done</li></ul>|251|[Domino Principle](http://codeforces.com/problemset/problem/56/E)|Codeforces||Codeforces Beta Round #52 (Div. 2)|7|\n|<ul><li>- [ ] Done</li></ul>|252|[Blog Photo](http://codeforces.com/problemset/problem/53/B)|Codeforces||Codeforces Beta Round #49 (Div. 2)|7|\n|<ul><li>- [ ] Done</li></ul>|253|[Three Base Stations](http://codeforces.com/problemset/problem/51/C)|Codeforces||Codeforces Beta Round #48|7|\n|<ul><li>- [ ] Done</li></ul>|254|[Zip-line](http://codeforces.com/problemset/problem/650/D)|Codeforces||Codeforces Round #345 (Div. 1)|7|\n|<ul><li>- [ ] Done</li></ul>|255|[Hostname Aliases](http://codeforces.com/problemset/problem/644/C)|Codeforces||CROC 2016 - Qualification|7|\n|<ul><li>- [ ] Done</li></ul>|256|[Simple Skewness](http://codeforces.com/problemset/problem/626/E)|Codeforces||8VC Venture Cup 2016 - Elimination Round|7|\n|<ul><li>- [ ] Done</li></ul>|257|[Professor GukiZ and Two Arrays](http://codeforces.com/problemset/problem/620/D)|Codeforces||Educational Codeforces Round 6|7|\n|<ul><li>- [ ] Done</li></ul>|258|[Hexagons](http://codeforces.com/problemset/problem/615/E)|Codeforces||Codeforces Round #338 (Div. 2)|7|\n|<ul><li>- [ ] Done</li></ul>|259|[Case of a Top Secret](http://codeforces.com/problemset/problem/555/D)|Codeforces||Codeforces Round #310 (Div. 1)|7|\n|<ul><li>- [ ] Done</li></ul>|260|[Nudist Beach](http://codeforces.com/problemset/problem/553/D)|Codeforces||Codeforces Round #309 (Div. 1)|7|\n|<ul><li>- [ ] Done</li></ul>|261|[Arthur and Questions](http://codeforces.com/problemset/problem/518/E)|Codeforces||Codeforces Round #293 (Div. 2)|7|\n|<ul><li>- [ ] Done</li></ul>|262|[Hiking](http://codeforces.com/problemset/problem/489/E)|Codeforces||Codeforces Round #277.5 (Div. 2)|7|\n|<ul><li>- [ ] Done</li></ul>|263|[Sign on Fence](http://codeforces.com/problemset/problem/484/E)|Codeforces||Codeforces Round #276 (Div. 1)|7|\n|<ul><li>- [ ] Done</li></ul>|264|[Hack it!](http://codeforces.com/problemset/problem/468/C)|Codeforces||Codeforces Round #268 (Div. 1) & Codeforces Round #268 (Div. 2)|7|\n|<ul><li>- [ ] Done</li></ul>|265|[Sereja and Squares](http://codeforces.com/problemset/problem/425/D)|Codeforces||Codeforces Round #243 (Div. 1)|7|\n|<ul><li>- [ ] Done</li></ul>|266|[Bug in Code](http://codeforces.com/problemset/problem/421/D)|Codeforces||Coder-Strike 2014 - Finals (online edition, Div. 2) & Coder-Strike 2014 - Finals (online edition, Div. 1) & Coder-Strike 2014 - Finals (online edition, Div. 2) & Coder-Strike 2014 - Finals (online edition, Div. 1)|7|\n|<ul><li>- [ ] Done</li></ul>|267|[Inna and Binary Logic](http://codeforces.com/problemset/problem/400/E)|Codeforces||Codeforces Round #234 (Div. 2)|7|\n|<ul><li>- [ ] Done</li></ul>|268|[George and Cards](http://codeforces.com/problemset/problem/387/E)|Codeforces||Codeforces Round #227 (Div. 2)|7|\n|<ul><li>- [ ] Done</li></ul>|269|[Inna and Sequence ](http://codeforces.com/problemset/problem/374/D)|Codeforces||Codeforces Round #220 (Div. 2)|7|\n|<ul><li>- [ ] Done</li></ul>|270|[Dima and Trap Graph](http://codeforces.com/problemset/problem/366/D)|Codeforces||Codeforces Round #214 (Div. 2)|7|\n|<ul><li>- [ ] Done</li></ul>|271|[Empire Strikes Back](http://codeforces.com/problemset/problem/300/E)|Codeforces||Codeforces Round #181 (Div. 2)|7|\n|<ul><li>- [ ] Done</li></ul>|272|[Printer](http://codeforces.com/problemset/problem/253/E)|Codeforces||Codeforces Round #154 (Div. 2)|8|\n|<ul><li>- [ ] Done</li></ul>|273|[Sweets for Everyone!](http://codeforces.com/problemset/problem/248/D)|Codeforces||Codeforces Round #152 (Div. 2) & Codeforces Round #152 (Div. 1)|8|\n|<ul><li>- [ ] Done</li></ul>|274|[Thwarting Demonstrations](http://codeforces.com/problemset/problem/191/E)|Codeforces||Codeforces Round #121 (Div. 1)|8|\n|<ul><li>- [ ] Done</li></ul>|275|[Space Voyage](http://codeforces.com/problemset/problem/177/E1)|Codeforces||ABBYY Cup 2.0 - Easy|8|\n|<ul><li>- [ ] Done</li></ul>|276|[Smile House](http://codeforces.com/problemset/problem/147/B)|Codeforces||Codeforces Testing Round #4|8|\n|<ul><li>- [ ] Done</li></ul>|277|[Present to Mom](http://codeforces.com/problemset/problem/131/F)|Codeforces||Codeforces Beta Round #95 (Div. 2)|8|\n|<ul><li>- [ ] Done</li></ul>|278|[MST Company](http://codeforces.com/problemset/problem/125/E)|Codeforces||Codeforces Testing Round #2|8|\n|<ul><li>- [ ] Done</li></ul>|279|[Space Rescuers](http://codeforces.com/problemset/problem/106/E)|Codeforces||Codeforces Beta Round #82 (Div. 2)|8|\n|<ul><li>- [ ] Done</li></ul>|280|[Guard Towers](http://codeforces.com/problemset/problem/85/E)|Codeforces||Yandex.Algorithm 2011 Round 1|8|\n|<ul><li>- [ ] Done</li></ul>|281|[Petya and Tree](http://codeforces.com/problemset/problem/85/C)|Codeforces||Yandex.Algorithm 2011 Round 1|8|\n|<ul><li>- [ ] Done</li></ul>|282|[Tourist](http://codeforces.com/problemset/problem/76/F)|Codeforces||All-Ukrainian School Olympiad in Informatics|8|\n|<ul><li>- [ ] Done</li></ul>|283|[Need For Brake](http://codeforces.com/problemset/problem/73/B)|Codeforces||Codeforces Beta Round #66|8|\n|<ul><li>- [ ] Done</li></ul>|284|[Lucky Tickets](http://codeforces.com/problemset/problem/70/C)|Codeforces||Codeforces Beta Round #64|8|\n|<ul><li>- [ ] Done</li></ul>|285|[Bombing](http://codeforces.com/problemset/problem/50/D)|Codeforces||Codeforces Beta Round #47|8|\n|<ul><li>- [ ] Done</li></ul>|286|[Tricky and Clever Password](http://codeforces.com/problemset/problem/30/E)|Codeforces||Codeforces Beta Round #30 (Codeforces format)|8|\n|<ul><li>- [ ] Done</li></ul>|287|[Don't fear, DravDe is kind](http://codeforces.com/problemset/problem/28/D)|Codeforces||Codeforces Beta Round #28 (Codeforces format)|8|\n|<ul><li>- [ ] Done</li></ul>|288|[Berland collider](http://codeforces.com/problemset/problem/24/E)|Codeforces||Codeforces Beta Round #24|8|\n|<ul><li>- [ ] Done</li></ul>|289|[Two Friends](http://codeforces.com/problemset/problem/8/D)|Codeforces||Codeforces Beta Round #8|8|\n|<ul><li>- [ ] Done</li></ul>|290|[Bear and Bowling 4](http://codeforces.com/problemset/problem/660/F)|Codeforces||Educational Codeforces Round 11|8|\n|<ul><li>- [ ] Done</li></ul>|291|[Startup Funding](http://codeforces.com/problemset/problem/633/E)|Codeforces||Manthan, Codefest 16|8|\n|<ul><li>- [ ] Done</li></ul>|292|[Preorder Test](http://codeforces.com/problemset/problem/627/D)|Codeforces||8VC Venture Cup 2016 - Final Round|8|\n|<ul><li>- [ ] Done</li></ul>|293|[Electric Charges](http://codeforces.com/problemset/problem/623/C)|Codeforces||AIM Tech Round (Div. 1) & AIM Tech Round (Div. 2)|8|\n|<ul><li>- [ ] Done</li></ul>|294|[New Year and Cleaning](http://codeforces.com/problemset/problem/611/F)|Codeforces||Good Bye 2015|8|\n|<ul><li>- [ ] Done</li></ul>|295|[Max and Bike](http://codeforces.com/problemset/problem/594/B)|Codeforces||Codeforces Round #330 (Div. 1) & Codeforces Round #330 (Div. 2)|8|\n|<ul><li>- [ ] Done</li></ul>|296|[Misha and Palindrome Degree](http://codeforces.com/problemset/problem/501/E)|Codeforces||Codeforces Round #285 (Div. 2) & Codeforces Round #285 (Div. 1)|8|\n|<ul><li>- [ ] Done</li></ul>|297|[DZY Loves Planting](http://codeforces.com/problemset/problem/444/E)|Codeforces||Codeforces Round #254 (Div. 1)|8|\n|<ul><li>- [ ] Done</li></ul>|298|[DZY Loves Strings](http://codeforces.com/problemset/problem/444/D)|Codeforces||Codeforces Round #254 (Div. 1)|8|\n|<ul><li>- [ ] Done</li></ul>|299|[Biathlon Track](http://codeforces.com/problemset/problem/424/D)|Codeforces||Codeforces Round #242 (Div. 2)|8|\n|<ul><li>- [ ] Done</li></ul>|300|[Mashmokh and Water Tanks](http://codeforces.com/problemset/problem/414/D)|Codeforces||Codeforces Round #240 (Div. 1)|8|\n|<ul><li>- [ ] Done</li></ul>|301|[Maze 1D](http://codeforces.com/problemset/problem/404/E)|Codeforces||Codeforces Round #237 (Div. 2)|8|\n|<ul><li>- [ ] Done</li></ul>|302|[Volcanoes](http://codeforces.com/problemset/problem/383/B)|Codeforces||Codeforces Round #225 (Div. 1) & Codeforces Round #225 (Div. 2)|8|\n|<ul><li>- [ ] Done</li></ul>|303|[Choosing Subtree is Fun](http://codeforces.com/problemset/problem/372/D)|Codeforces||Codeforces Round #219 (Div. 1)|8|\n|<ul><li>- [ ] Done</li></ul>|304|[Summer Earnings](http://codeforces.com/problemset/problem/333/E)|Codeforces||Codeforces Round #194 (Div. 1)|8|\n|<ul><li>- [ ] Done</li></ul>|305|[Sereja and Straight Lines](http://codeforces.com/problemset/problem/314/D)|Codeforces||Codeforces Round #187 (Div. 1)|8|\n|<ul><li>- [ ] Done</li></ul>|306|[Memory for Arrays](http://codeforces.com/problemset/problem/309/C)|Codeforces||Croc Champ 2013 - Finals (online version, Div. 1)|8|\n|<ul><li>- [ ] Done</li></ul>|307|[Morning run](http://codeforces.com/problemset/problem/309/A)|Codeforces||Croc Champ 2013 - Finals (online version, Div. 1)|8|\n|<ul><li>- [ ] Done</li></ul>|308|[Vanya and Balloons](http://codeforces.com/problemset/problem/677/E)|Codeforces||Codeforces Round #355 (Div. 2)|8|\n|<ul><li>- [ ] Done</li></ul>|309|[Michael and Charging Stations](http://codeforces.com/problemset/problem/853/D)|Codeforces||Codeforces Round #433 (Div. 1, based on Olympiad of Metropolises)|8|\n|<ul><li>- [ ] Done</li></ul>|310|[Animals and Puzzle](http://codeforces.com/problemset/problem/713/D)|Codeforces||Codeforces Round #371 (Div. 1)|8|\n|<ul><li>- [ ] Done</li></ul>|311|[Friends](http://codeforces.com/problemset/problem/241/B)|Codeforces||Bayan 2012-2013 Elimination Round (ACM ICPC Rules, English statements)|9|\n|<ul><li>- [ ] Done</li></ul>|312|[Fence](http://codeforces.com/problemset/problem/232/D)|Codeforces||Codeforces Round #144 (Div. 1)|9|\n|<ul><li>- [ ] Done</li></ul>|313|[Cutting a Fence](http://codeforces.com/problemset/problem/212/D)|Codeforces||VK Cup 2012 Finals (unofficial online-version)|9|\n|<ul><li>- [ ] Done</li></ul>|314|[Thoroughly Bureaucratic Organization](http://codeforces.com/problemset/problem/201/E)|Codeforces||Codeforces Round #127 (Div. 1)|9|\n|<ul><li>- [ ] Done</li></ul>|315|[Tractor College](http://codeforces.com/problemset/problem/200/E)|Codeforces||Codeforces Round #126 (Div. 2)|9|\n|<ul><li>- [ ] Done</li></ul>|316|[Gripping Story](http://codeforces.com/problemset/problem/198/E)|Codeforces||Codeforces Round #125 (Div. 1)|9|\n|<ul><li>- [ ] Done</li></ul>|317|[Delivering Carcinogen](http://codeforces.com/problemset/problem/198/C)|Codeforces||Codeforces Round #125 (Div. 1) & Codeforces Round #125 (Div. 2)|9|\n|<ul><li>- [ ] Done</li></ul>|318|[Space Voyage](http://codeforces.com/problemset/problem/177/E2)|Codeforces||ABBYY Cup 2.0 - Easy|9|\n|<ul><li>- [ ] Done</li></ul>|319|[Minimum Diameter](http://codeforces.com/problemset/problem/164/D)|Codeforces||VK Cup 2012 Round 3|9|\n|<ul><li>- [ ] Done</li></ul>|320|[Buses and People](http://codeforces.com/problemset/problem/160/E)|Codeforces||Codeforces Round #111 (Div. 2)|9|\n|<ul><li>- [ ] Done</li></ul>|321|[Freezing with Style](http://codeforces.com/problemset/problem/150/E)|Codeforces||Codeforces Round #107 (Div. 1)|9|\n|<ul><li>- [ ] Done</li></ul>|322|[Lucky Segments](http://codeforces.com/problemset/problem/121/D)|Codeforces||Codeforces Beta Round #91 (Div. 1 Only)|9|\n|<ul><li>- [ ] Done</li></ul>|323|[Help Greg the Dwarf](http://codeforces.com/problemset/problem/98/C)|Codeforces||Codeforces Beta Round #78 (Div. 1 Only) & Codeforces Beta Round #78 (Div. 2 Only)|9|\n|<ul><li>- [ ] Done</li></ul>|324|[Winning Strategy](http://codeforces.com/problemset/problem/97/C)|Codeforces||Yandex.Algorithm 2011 Finals|9|\n|<ul><li>- [ ] Done</li></ul>|325|[Archer's Shot](http://codeforces.com/problemset/problem/78/D)|Codeforces||Codeforces Beta Round #70 (Div. 2)|9|\n|<ul><li>- [ ] Done</li></ul>|326|[Pasha and Pipe](http://codeforces.com/problemset/problem/518/F)|Codeforces||Codeforces Round #293 (Div. 2)|9|\n|<ul><li>- [ ] Done</li></ul>|327|[Mr. Kitayuta vs. Bamboos](http://codeforces.com/problemset/problem/505/E)|Codeforces||Codeforces Round #286 (Div. 2) & Codeforces Round #286 (Div. 1)|9|\n|<ul><li>- [ ] Done</li></ul>|328|[Chemistry Experiment](http://codeforces.com/problemset/problem/431/E)|Codeforces||Codeforces Round #247 (Div. 2)|9|\n|<ul><li>- [ ] Done</li></ul>|329|[Dividing Kingdom](http://codeforces.com/problemset/problem/260/E)|Codeforces||Codeforces Round #158 (Div. 2)|9|\n|<ul><li>- [ ] Done</li></ul>|330|[Optimal Point](http://codeforces.com/problemset/problem/685/C)|Codeforces||Codeforces Round #359 (Div. 1) & Codeforces Round #359 (Div. 2)|9|\n|<ul><li>- [ ] Done</li></ul>|331|[Karen and Cards](http://codeforces.com/problemset/problem/815/D)|Codeforces||Codeforces Round #419 (Div. 1)|9|\n|<ul><li>- [ ] Done</li></ul>|332|[Strange Radiation](http://codeforces.com/problemset/problem/832/C)|Codeforces||Codeforces Round #425 (Div. 2)|9|\n|<ul><li>- [ ] Done</li></ul>|333|[Road to Home](http://codeforces.com/problemset/problem/721/E)|Codeforces||Codeforces Round #374 (Div. 2)|9|\n|<ul><li>- [ ] Done</li></ul>|334|[Soap Time! - 2](http://codeforces.com/problemset/problem/185/E)|Codeforces||Codeforces Round #118 (Div. 1)|10|\n|<ul><li>- [ ] Done</li></ul>|335|[Armistice Area Apportionment](http://codeforces.com/problemset/problem/645/G)|Codeforces||CROC 2016 - Elimination Round|10|\n|<ul><li>- [ ] Done</li></ul>|336|[Cross Sum](http://codeforces.com/problemset/problem/607/E)|Codeforces||Codeforces Round #336 (Div. 1)|10|\n|<ul><li>- [ ] Done</li></ul>|337|[BCPC](http://codeforces.com/problemset/problem/592/E)|Codeforces||Codeforces Round #328 (Div. 2)|10|\n|<ul><li>- [ ] Done</li></ul>|338|[Duff in Mafia](http://codeforces.com/problemset/problem/587/D)|Codeforces||Codeforces Round #326 (Div. 1) & Codeforces Round #326 (Div. 2)|10|\n|<ul><li>- [ ] Done</li></ul>|339|[Painting Edges](http://codeforces.com/problemset/problem/576/E)|Codeforces||Codeforces Round #319 (Div. 1)|10|\n|<ul><li>- [ ] Done</li></ul>|340|[Campus](http://codeforces.com/problemset/problem/571/D)|Codeforces||Codeforces Round #317 [AimFund Thanks-Round] (Div. 1)|10|\n|<ul><li>- [ ] Done</li></ul>|341|[Berland Miners](http://codeforces.com/problemset/problem/533/A)|Codeforces||VK Cup 2015 - Round 2 (unofficial online mirror, Div. 1 only)|10|\n|<ul><li>- [ ] Done</li></ul>|342|[Misha and LCP on Tree](http://codeforces.com/problemset/problem/504/E)|Codeforces||Codeforces Round #285 (Div. 1)|10|\n|<ul><li>- [ ] Done</li></ul>|343|[Furukawa Nagisa's Tree](http://codeforces.com/problemset/problem/434/E)|Codeforces||Codeforces Round #248 (Div. 1)|10|\n|<ul><li>- [ ] Done</li></ul>|344|[Inna and Babies](http://codeforces.com/problemset/problem/374/E)|Codeforces||Codeforces Round #220 (Div. 2)|10|\n|<ul><li>- [ ] Done</li></ul>|345|[Looking for Owls](http://codeforces.com/problemset/problem/350/D)|Codeforces||Codeforces Round #203 (Div. 2)|10|\n|<ul><li>- [ ] Done</li></ul>|346|[Sheep](http://codeforces.com/problemset/problem/309/E)|Codeforces||Croc Champ 2013 - Finals (online version, Div. 1)|10|\n|<ul><li>- [ ] Done</li></ul>|347|[Forward, march!](http://codeforces.com/problemset/problem/11/E)|Codeforces||Codeforces Beta Round #11|10|\n|<ul><li>- [ ] Done</li></ul>|348|[Karen and Neighborhood](http://codeforces.com/problemset/problem/815/E)|Codeforces||Codeforces Round #419 (Div. 1)|10|\n|<ul><li>- [ ] Done</li></ul>|349|[Mod Mod Mod](http://codeforces.com/problemset/problem/889/E)|Codeforces||Codeforces Round #445 (Div. 1, based on Technocup 2018 Elimination Round 3)|10|\n|<ul><li>- [ ] Done</li></ul>|350|[Nikita and game](http://codeforces.com/problemset/problem/842/E)|Codeforces||Codeforces Round #430 (Div. 2)|10|\n"
  },
  {
    "path": "categories/014. constructive_algorithms/README.md",
    "content": "# 014. constructive_algorithms\n\n\n| Checkbox | ID | Problem Name|Online Judge|Contest|Difficulty Level|\n|:---:|:---:|:---:|:---:|:---:|:---:|\n|<ul><li>- [ ] Done</li></ul>|1|[Hexadecimal's theorem](http://codeforces.com/problemset/problem/199/A)|Codeforces|Codeforces Round #125 (Div. 2)|1|\n|<ul><li>- [ ] Done</li></ul>|2|[Insomnia cure](http://codeforces.com/problemset/problem/148/A)|Codeforces|Codeforces Round #105 (Div. 2)|1|\n|<ul><li>- [ ] Done</li></ul>|3|[Present from Lena](http://codeforces.com/problemset/problem/118/B)|Codeforces|Codeforces Beta Round #89 (Div. 2)|1|\n|<ul><li>- [ ] Done</li></ul>|4|[Lucky Sum of Digits](http://codeforces.com/problemset/problem/109/A)|Codeforces|Codeforces Beta Round #84 (Div. 1 Only) & Codeforces Beta Round #84 (Div. 2 Only)|1|\n|<ul><li>- [ ] Done</li></ul>|5|[Before an Exam](http://codeforces.com/problemset/problem/4/B)|Codeforces|Codeforces Beta Round #4 (Div. 2 Only)|1|\n|<ul><li>- [ ] Done</li></ul>|6|[Far Relative’s Birthday Cake](http://codeforces.com/problemset/problem/629/A)|Codeforces|Codeforces Round #343 (Div. 2)|1|\n|<ul><li>- [ ] Done</li></ul>|7|[Simple Game](http://codeforces.com/problemset/problem/570/B)|Codeforces|Codeforces Round #316 (Div. 2)|1|\n|<ul><li>- [ ] Done</li></ul>|8|[Quasi Binary](http://codeforces.com/problemset/problem/538/B)|Codeforces|Codeforces Round #300|1|\n|<ul><li>- [ ] Done</li></ul>|9|[Exam](http://codeforces.com/problemset/problem/534/A)|Codeforces|Codeforces Round #298 (Div. 2)|1|\n|<ul><li>- [ ] Done</li></ul>|10|[Game](http://codeforces.com/problemset/problem/513/A)|Codeforces|Rockethon 2015|1|\n|<ul><li>- [ ] Done</li></ul>|11|[Diverse Permutation](http://codeforces.com/problemset/problem/482/A)|Codeforces|Codeforces Round #275 (Div. 1) & Codeforces Round #275 (Div. 2)|1|\n|<ul><li>- [ ] Done</li></ul>|12|[Random Teams](http://codeforces.com/problemset/problem/478/B)|Codeforces|Codeforces Round #273 (Div. 2)|1|\n|<ul><li>- [ ] Done</li></ul>|13|[Fedor and New Game](http://codeforces.com/problemset/problem/467/B)|Codeforces|Codeforces Round #267 (Div. 2)|1|\n|<ul><li>- [ ] Done</li></ul>|14|[Anton and Letters](http://codeforces.com/problemset/problem/443/A)|Codeforces|Codeforces Round #253 (Div. 2)|1|\n|<ul><li>- [ ] Done</li></ul>|15|[Team](http://codeforces.com/problemset/problem/401/C)|Codeforces|Codeforces Round #235 (Div. 2)|1|\n|<ul><li>- [ ] Done</li></ul>|16|[Road Construction](http://codeforces.com/problemset/problem/330/B)|Codeforces|Codeforces Round #192 (Div. 2)|1|\n|<ul><li>- [ ] Done</li></ul>|17|[Array](http://codeforces.com/problemset/problem/300/A)|Codeforces|Codeforces Round #181 (Div. 2)|1|\n|<ul><li>- [ ] Done</li></ul>|18|[Queue at the School](http://codeforces.com/problemset/problem/266/B)|Codeforces|Codeforces Round #163 (Div. 2)|1|\n|<ul><li>- [ ] Done</li></ul>|19|[Different is Good](http://codeforces.com/problemset/problem/672/B)|Codeforces|Codeforces Round #352 (Div. 2)|1|\n|<ul><li>- [ ] Done</li></ul>|20|[Free Ice Cream](http://codeforces.com/problemset/problem/686/A)|Codeforces|Codeforces Round #359 (Div. 2)|1|\n|<ul><li>- [ ] Done</li></ul>|21|[Bear and Five Cards](http://codeforces.com/problemset/problem/680/A)|Codeforces|Codeforces Round #356 (Div. 2)|1|\n|<ul><li>- [ ] Done</li></ul>|22|[Bear and Finding Criminals](http://codeforces.com/problemset/problem/680/B)|Codeforces|Codeforces Round #356 (Div. 2)|1|\n|<ul><li>- [ ] Done</li></ul>|23|[Alyona and Numbers](http://codeforces.com/problemset/problem/682/A)|Codeforces|Codeforces Round #358 (Div. 2)|1|\n|<ul><li>- [ ] Done</li></ul>|24|[Lovely Palindromes](http://codeforces.com/problemset/problem/688/B)|Codeforces|Codeforces Round #360 (Div. 2)|1|\n|<ul><li>- [ ] Done</li></ul>|25|[Fraction](http://codeforces.com/problemset/problem/854/A)|Codeforces|Codeforces Round #433 (Div. 2, based on Olympiad of Metropolises)|1|\n|<ul><li>- [ ] Done</li></ul>|26|[Timofey and cubes](http://codeforces.com/problemset/problem/764/B)|Codeforces|Codeforces Round #395 (Div. 2)|1|\n|<ul><li>- [ ] Done</li></ul>|27|[Shell Game](http://codeforces.com/problemset/problem/777/A)|Codeforces|Codeforces Round #401 (Div. 2)|1|\n|<ul><li>- [ ] Done</li></ul>|28|[Mahmoud and Longest Uncommon Subsequence](http://codeforces.com/problemset/problem/766/A)|Codeforces|Codeforces Round #396 (Div. 2)|1|\n|<ul><li>- [ ] Done</li></ul>|29|[Mike and palindrome](http://codeforces.com/problemset/problem/798/A)|Codeforces|Codeforces Round #410 (Div. 2)|1|\n|<ul><li>- [ ] Done</li></ul>|30|[Mahmoud and a Triangle](http://codeforces.com/problemset/problem/766/B)|Codeforces|Codeforces Round #396 (Div. 2)|1|\n|<ul><li>- [ ] Done</li></ul>|31|[Chloe and the sequence ](http://codeforces.com/problemset/problem/743/B)|Codeforces|Codeforces Round #384 (Div. 2)|1|\n|<ul><li>- [ ] Done</li></ul>|32|[Vladik and flights](http://codeforces.com/problemset/problem/743/A)|Codeforces|Codeforces Round #384 (Div. 2)|1|\n|<ul><li>- [ ] Done</li></ul>|33|[Chris and Magic Square](http://codeforces.com/problemset/problem/711/B)|Codeforces|Codeforces Round #369 (Div. 2)|1|\n|<ul><li>- [ ] Done</li></ul>|34|[Buggy Sorting](http://codeforces.com/problemset/problem/246/A)|Codeforces|Codeforces Round #151 (Div. 2)|2|\n|<ul><li>- [ ] Done</li></ul>|35|[Bear and Forgotten Tree 3](http://codeforces.com/problemset/problem/639/B)|Codeforces|VK Cup 2016 - Round 1|2|\n|<ul><li>- [ ] Done</li></ul>|36|[Print Check](http://codeforces.com/problemset/problem/631/B)|Codeforces|Codeforces Round #344 (Div. 2)|2|\n|<ul><li>- [ ] Done</li></ul>|37|[K-special Tables](http://codeforces.com/problemset/problem/625/C)|Codeforces|Codeforces Round #342 (Div. 2)|2|\n|<ul><li>- [ ] Done</li></ul>|38|[War of the Corporations](http://codeforces.com/problemset/problem/625/B)|Codeforces|Codeforces Round #342 (Div. 2)|2|\n|<ul><li>- [ ] Done</li></ul>|39|[Guess the Permutation](http://codeforces.com/problemset/problem/618/B)|Codeforces|Wunder Fund Round 2016 (Div. 1 + Div. 2 combined)|2|\n|<ul><li>- [ ] Done</li></ul>|40|[Sorting Railway Cars](http://codeforces.com/problemset/problem/605/A)|Codeforces|Codeforces Round #335 (Div. 1) & Codeforces Round #335 (Div. 2)|2|\n|<ul><li>- [ ] Done</li></ul>|41|[GCD Table](http://codeforces.com/problemset/problem/582/A)|Codeforces|Codeforces Round #323 (Div. 1) & Codeforces Round #323 (Div. 2)|2|\n|<ul><li>- [ ] Done</li></ul>|42|[Replacement](http://codeforces.com/problemset/problem/570/C)|Codeforces|Codeforces Round #316 (Div. 2)|2|\n|<ul><li>- [ ] Done</li></ul>|43|[Gerald is into Art](http://codeforces.com/problemset/problem/560/B)|Codeforces|Codeforces Round #313 (Div. 2)|2|\n|<ul><li>- [ ] Done</li></ul>|44|[Soldier and Number Game](http://codeforces.com/problemset/problem/546/D)|Codeforces|Codeforces Round #304 (Div. 2)|2|\n|<ul><li>- [ ] Done</li></ul>|45|[Sea and Islands](http://codeforces.com/problemset/problem/544/B)|Codeforces|Codeforces Round #302 (Div. 2)|2|\n|<ul><li>- [ ] Done</li></ul>|46|[Painting Pebbles](http://codeforces.com/problemset/problem/509/B)|Codeforces|Codeforces Round #289 (Div. 2, ACM ICPC Rules)|2|\n|<ul><li>- [ ] Done</li></ul>|47|[New Year Book Reading](http://codeforces.com/problemset/problem/500/C)|Codeforces|Good Bye 2014|2|\n|<ul><li>- [ ] Done</li></ul>|48|[Removing Columns](http://codeforces.com/problemset/problem/496/C)|Codeforces|Codeforces Round #283 (Div. 2) & Codeforces Round #283 (Div. 1)|2|\n|<ul><li>- [ ] Done</li></ul>|49|[Vasya and Chess](http://codeforces.com/problemset/problem/493/D)|Codeforces|Codeforces Round #281 (Div. 2)|2|\n|<ul><li>- [ ] Done</li></ul>|50|[Bits](http://codeforces.com/problemset/problem/484/A)|Codeforces|Codeforces Round #276 (Div. 1) & Codeforces Round #276 (Div. 2)|2|\n|<ul><li>- [ ] Done</li></ul>|51|[24 Game](http://codeforces.com/problemset/problem/468/A)|Codeforces|Codeforces Round #268 (Div. 1) & Codeforces Round #268 (Div. 2)|2|\n|<ul><li>- [ ] Done</li></ul>|52|[Valera and Tubes ](http://codeforces.com/problemset/problem/441/C)|Codeforces|Codeforces Round #252 (Div. 2)|2|\n|<ul><li>- [ ] Done</li></ul>|53|[Mashmokh and Numbers](http://codeforces.com/problemset/problem/414/A)|Codeforces|Codeforces Round #240 (Div. 1) & Codeforces Round #240 (Div. 2)|2|\n|<ul><li>- [ ] Done</li></ul>|54|[New Year Present](http://codeforces.com/problemset/problem/379/B)|Codeforces|Good Bye 2013|2|\n|<ul><li>- [ ] Done</li></ul>|55|[Levko and Table](http://codeforces.com/problemset/problem/361/A)|Codeforces|Codeforces Round #210 (Div. 2)|2|\n|<ul><li>- [ ] Done</li></ul>|56|[Vasya and Digital Root](http://codeforces.com/problemset/problem/355/A)|Codeforces|Codeforces Round #206 (Div. 2)|2|\n|<ul><li>- [ ] Done</li></ul>|57|[Beautiful Sets of Points](http://codeforces.com/problemset/problem/268/C)|Codeforces|Codeforces Round #164 (Div. 2)|2|\n|<ul><li>- [ ] Done</li></ul>|58|[Escape from Stones](http://codeforces.com/problemset/problem/264/A)|Codeforces|Codeforces Round #162 (Div. 1) & Codeforces Round #162 (Div. 2)|2|\n|<ul><li>- [ ] Done</li></ul>|59|[Bear and Prime 100](http://codeforces.com/problemset/problem/679/A)|Codeforces|Codeforces Round #356 (Div. 1) & Codeforces Round #356 (Div. 2)|2|\n|<ul><li>- [ ] Done</li></ul>|60|[Little Robber Girl's Zoo](http://codeforces.com/problemset/problem/686/B)|Codeforces|Codeforces Round #359 (Div. 2)|2|\n|<ul><li>- [ ] Done</li></ul>|61|[Restoring Painting](http://codeforces.com/problemset/problem/675/B)|Codeforces|Codeforces Round #353 (Div. 2)|2|\n|<ul><li>- [ ] Done</li></ul>|62|[Alyona and mex](http://codeforces.com/problemset/problem/739/A)|Codeforces|Codeforces Round #381 (Div. 1) & Codeforces Round #381 (Div. 2)|2|\n|<ul><li>- [ ] Done</li></ul>|63|[Plus and Square Root](http://codeforces.com/problemset/problem/715/A)|Codeforces|Codeforces Round #372 (Div. 1) & Codeforces Round #372 (Div. 2)|2|\n|<ul><li>- [ ] Done</li></ul>|64|[Valued Keys](http://codeforces.com/problemset/problem/801/B)|Codeforces|Codeforces Round #409 (rated, Div. 2, based on VK Cup 2017 Round 2)|2|\n|<ul><li>- [ ] Done</li></ul>|65|[Maxim Buys an Apartment](http://codeforces.com/problemset/problem/854/B)|Codeforces|Codeforces Round #433 (Div. 2, based on Olympiad of Metropolises)|2|\n|<ul><li>- [ ] Done</li></ul>|66|[Alyona and flowers](http://codeforces.com/problemset/problem/740/B)|Codeforces|Codeforces Round #381 (Div. 2)|2|\n|<ul><li>- [ ] Done</li></ul>|67|[Parallelogram is Back](http://codeforces.com/problemset/problem/749/B)|Codeforces|Codeforces Round #388 (Div. 2)|2|\n|<ul><li>- [ ] Done</li></ul>|68|[Lesha and array splitting](http://codeforces.com/problemset/problem/754/A)|Codeforces|Codeforces Round #390 (Div. 2)|2|\n|<ul><li>- [ ] Done</li></ul>|69|[Vladik and fractions](http://codeforces.com/problemset/problem/743/C)|Codeforces|Codeforces Round #384 (Div. 2)|2|\n|<ul><li>- [ ] Done</li></ul>|70|[An express train to reveries](http://codeforces.com/problemset/problem/814/B)|Codeforces|Codeforces Round #418 (Div. 2)|2|\n|<ul><li>- [ ] Done</li></ul>|71|[Cumulative Sum Query](http://www.spoj.com/problems/CSUMQ/)|SPOJ||2|\n|<ul><li>- [ ] Done</li></ul>|72|[Cards with Numbers](http://codeforces.com/problemset/problem/254/A)|Codeforces|Codeforces Round #155 (Div. 2)|3|\n|<ul><li>- [ ] Done</li></ul>|73|[Lucky String](http://codeforces.com/problemset/problem/110/B)|Codeforces|Codeforces Beta Round #84 (Div. 2 Only)|3|\n|<ul><li>- [ ] Done</li></ul>|74|[Easter Eggs](http://codeforces.com/problemset/problem/78/B)|Codeforces|Codeforces Beta Round #70 (Div. 2)|3|\n|<ul><li>- [ ] Done</li></ul>|75|[Increasing Sequence](http://codeforces.com/problemset/problem/11/A)|Codeforces|Codeforces Beta Round #11|3|\n|<ul><li>- [ ] Done</li></ul>|76|[Kalevitch and Chess](http://codeforces.com/problemset/problem/7/A)|Codeforces|Codeforces Beta Round #7|3|\n|<ul><li>- [ ] Done</li></ul>|77|[Longest Regular Bracket Sequence](http://codeforces.com/problemset/problem/5/C)|Codeforces|Codeforces Beta Round #5|3|\n|<ul><li>- [ ] Done</li></ul>|78|[Parliament of Berland](http://codeforces.com/problemset/problem/644/A)|Codeforces|CROC 2016 - Qualification|3|\n|<ul><li>- [ ] Done</li></ul>|79|[A Trivial Problem](http://codeforces.com/problemset/problem/633/B)|Codeforces|Manthan, Codefest 16|3|\n|<ul><li>- [ ] Done</li></ul>|80|[Cards](http://codeforces.com/problemset/problem/626/B)|Codeforces|8VC Venture Cup 2016 - Elimination Round|3|\n|<ul><li>- [ ] Done</li></ul>|81|[Graph and String](http://codeforces.com/problemset/problem/623/A)|Codeforces|AIM Tech Round (Div. 1) & AIM Tech Round (Div. 2)|3|\n|<ul><li>- [ ] Done</li></ul>|82|[Polyline](http://codeforces.com/problemset/problem/617/D)|Codeforces|Codeforces Round #340 (Div. 2)|3|\n|<ul><li>- [ ] Done</li></ul>|83|[Marina and Vasya](http://codeforces.com/problemset/problem/584/C)|Codeforces|Codeforces Round #324 (Div. 2)|3|\n|<ul><li>- [ ] Done</li></ul>|84|[Misha and Forest](http://codeforces.com/problemset/problem/501/C)|Codeforces|Codeforces Round #285 (Div. 2) & Codeforces Round #285 (Div. 1)|3|\n|<ul><li>- [ ] Done</li></ul>|85|[Secret Combination](http://codeforces.com/problemset/problem/496/B)|Codeforces|Codeforces Round #283 (Div. 2)|3|\n|<ul><li>- [ ] Done</li></ul>|86|[Interesting Array](http://codeforces.com/problemset/problem/482/B)|Codeforces|Codeforces Round #275 (Div. 1) & Codeforces Round #275 (Div. 2)|3|\n|<ul><li>- [ ] Done</li></ul>|87|[Pashmak and Buses](http://codeforces.com/problemset/problem/459/C)|Codeforces|Codeforces Round #261 (Div. 2)|3|\n|<ul><li>- [ ] Done</li></ul>|88|[Football](http://codeforces.com/problemset/problem/417/C)|Codeforces|RCC 2014 Warmup (Div. 2) & RCC 2014 Warmup (Div. 1)|3|\n|<ul><li>- [ ] Done</li></ul>|89|[A + B Strikes Back](http://codeforces.com/problemset/problem/409/H)|Codeforces|April Fools Day Contest 2014|3|\n|<ul><li>- [ ] Done</li></ul>|90|[Searching for Graph](http://codeforces.com/problemset/problem/402/C)|Codeforces|Codeforces Round #236 (Div. 2) & Codeforces Round #236 (Div. 1)|3|\n|<ul><li>- [ ] Done</li></ul>|91|[Valera and Contest](http://codeforces.com/problemset/problem/369/B)|Codeforces|Codeforces Round #216 (Div. 2)|3|\n|<ul><li>- [ ] Done</li></ul>|92|[Levko and Permutation](http://codeforces.com/problemset/problem/361/B)|Codeforces|Codeforces Round #210 (Div. 2)|3|\n|<ul><li>- [ ] Done</li></ul>|93|[Permutation](http://codeforces.com/problemset/problem/359/B)|Codeforces|Codeforces Round #209 (Div. 2)|3|\n|<ul><li>- [ ] Done</li></ul>|94|[Flag Day](http://codeforces.com/problemset/problem/357/B)|Codeforces|Codeforces Round #207 (Div. 2)|3|\n|<ul><li>- [ ] Done</li></ul>|95|[Xenia and Weights](http://codeforces.com/problemset/problem/339/C)|Codeforces|Codeforces Round #197 (Div. 2)|3|\n|<ul><li>- [ ] Done</li></ul>|96|[Purification](http://codeforces.com/problemset/problem/329/A)|Codeforces|Codeforces Round #192 (Div. 1) & Codeforces Round #192 (Div. 2)|3|\n|<ul><li>- [ ] Done</li></ul>|97|[Ilya and Matrix](http://codeforces.com/problemset/problem/313/C)|Codeforces|Codeforces Round #186 (Div. 2)|3|\n|<ul><li>- [ ] Done</li></ul>|98|[Lucky Permutation Triple](http://codeforces.com/problemset/problem/303/A)|Codeforces|Codeforces Round #183 (Div. 1) & Codeforces Round #183 (Div. 2)|3|\n|<ul><li>- [ ] Done</li></ul>|99|[Cows and Sequence](http://codeforces.com/problemset/problem/283/A)|Codeforces|Codeforces Round #174 (Div. 1) & Codeforces Round #174 (Div. 2)|3|\n|<ul><li>- [ ] Done</li></ul>|100|[XOR and OR](http://codeforces.com/problemset/problem/282/C)|Codeforces|Codeforces Round #173 (Div. 2)|3|\n|<ul><li>- [ ] Done</li></ul>|101|[Dice Tower](http://codeforces.com/problemset/problem/225/A)|Codeforces|Codeforces Round #139 (Div. 2)|3|\n|<ul><li>- [ ] Done</li></ul>|102|[Little Elephant and Array](http://codeforces.com/problemset/problem/220/B)|Codeforces|Codeforces Round #136 (Div. 1) & Codeforces Round #136 (Div. 2)|3|\n|<ul><li>- [ ] Done</li></ul>|103|[Coat of Anticubism](http://codeforces.com/problemset/problem/667/B)|Codeforces|Codeforces Round #349 (Div. 2)|3|\n|<ul><li>- [ ] Done</li></ul>|104|[From Y to Y](http://codeforces.com/problemset/problem/848/A)|Codeforces|Codeforces Round #431 (Div. 1) & Codeforces Round #431 (Div. 2)|3|\n|<ul><li>- [ ] Done</li></ul>|105|[Short Program](http://codeforces.com/problemset/problem/878/A)|Codeforces|Codeforces Round #443 (Div. 1) & Codeforces Round #443 (Div. 2)|3|\n|<ul><li>- [ ] Done</li></ul>|106|[Mister B and Angle in Polygon](http://codeforces.com/problemset/problem/820/B)|Codeforces|Codeforces Round #421 (Div. 2)|3|\n|<ul><li>- [ ] Done</li></ul>|107|[Mike and Cellphone](http://codeforces.com/problemset/problem/689/A)|Codeforces|Codeforces Round #361 (Div. 2)|3|\n|<ul><li>- [ ] Done</li></ul>|108|[Magic, Wizardry and Wonders](http://codeforces.com/problemset/problem/231/B)|Codeforces|Codeforces Round #143 (Div. 2)|4|\n|<ul><li>- [ ] Done</li></ul>|109|[Hometask](http://codeforces.com/problemset/problem/214/B)|Codeforces|Codeforces Round #131 (Div. 2)|4|\n|<ul><li>- [ ] Done</li></ul>|110|[Plate Game](http://codeforces.com/problemset/problem/197/A)|Codeforces|Codeforces Round #124 (Div. 2)|4|\n|<ul><li>- [ ] Done</li></ul>|111|[Mysterious numbers - 1](http://codeforces.com/problemset/problem/171/A)|Codeforces|April Fools Day Contest|4|\n|<ul><li>- [ ] Done</li></ul>|112|[Little Frog](http://codeforces.com/problemset/problem/53/C)|Codeforces|Codeforces Beta Round #49 (Div. 2)|4|\n|<ul><li>- [ ] Done</li></ul>|113|[Rebus](http://codeforces.com/problemset/problem/663/A)|Codeforces|Codeforces Round #347 (Div. 1) & Codeforces Round #347 (Div. 2)|4|\n|<ul><li>- [ ] Done</li></ul>|114|[Amity Assessment](http://codeforces.com/problemset/problem/645/A)|Codeforces|CROC 2016 - Elimination Round|4|\n|<ul><li>- [ ] Done</li></ul>|115|[Little Artem and Dance](http://codeforces.com/problemset/problem/641/C)|Codeforces|VK Cup 2016 - Round 2|4|\n|<ul><li>- [ ] Done</li></ul>|116|[Home Numbers](http://codeforces.com/problemset/problem/638/A)|Codeforces|VK Cup 2016 - Qualification Round 2|4|\n|<ul><li>- [ ] Done</li></ul>|117|[Promocodes with Mistakes](http://codeforces.com/problemset/problem/637/C)|Codeforces|VK Cup 2016 - Qualification Round 1|4|\n|<ul><li>- [ ] Done</li></ul>|118|[Island Puzzle](http://codeforces.com/problemset/problem/634/A)|Codeforces|8VC Venture Cup 2016 - Final Round (Div. 1 Edition) & 8VC Venture Cup 2016 - Final Round (Div. 2 Edition)|4|\n|<ul><li>- [ ] Done</li></ul>|119|[Alice, Bob, Two Teams](http://codeforces.com/problemset/problem/632/B)|Codeforces|Educational Codeforces Round 9|4|\n|<ul><li>- [ ] Done</li></ul>|120|[Harmony Analysis](http://codeforces.com/problemset/problem/610/C)|Codeforces|Codeforces Round #337 (Div. 2)|4|\n|<ul><li>- [ ] Done</li></ul>|121|[Lazy Student](http://codeforces.com/problemset/problem/605/B)|Codeforces|Codeforces Round #335 (Div. 1) & Codeforces Round #335 (Div. 2)|4|\n|<ul><li>- [ ] Done</li></ul>|122|[Three Logos](http://codeforces.com/problemset/problem/581/D)|Codeforces|Codeforces Round #322 (Div. 2)|4|\n|<ul><li>- [ ] Done</li></ul>|123|[Tree Requests](http://codeforces.com/problemset/problem/570/D)|Codeforces|Codeforces Round #316 (Div. 2)|4|\n|<ul><li>- [ ] Done</li></ul>|124|[ZgukistringZ](http://codeforces.com/problemset/problem/551/B)|Codeforces|Codeforces Round #307 (Div. 2)|4|\n|<ul><li>- [ ] Done</li></ul>|125|[Regular Bridge](http://codeforces.com/problemset/problem/550/D)|Codeforces|Codeforces Round #306 (Div. 2)|4|\n|<ul><li>- [ ] Done</li></ul>|126|[Weird Chess](http://codeforces.com/problemset/problem/538/D)|Codeforces|Codeforces Round #300|4|\n|<ul><li>- [ ] Done</li></ul>|127|[Drazil and Tiles](http://codeforces.com/problemset/problem/515/D)|Codeforces|Codeforces Round #292 (Div. 2) & Codeforces Round #292 (Div. 1)|4|\n|<ul><li>- [ ] Done</li></ul>|128|[Dreamoon and Sets](http://codeforces.com/problemset/problem/476/D)|Codeforces|Codeforces Round #272 (Div. 2) & Codeforces Round #272 (Div. 1)|4|\n|<ul><li>- [ ] Done</li></ul>|129|[Devu and Partitioning of the Array](http://codeforces.com/problemset/problem/439/C)|Codeforces|Codeforces Round #251 (Div. 2)|4|\n|<ul><li>- [ ] Done</li></ul>|130|[Pasha and Hamsters](http://codeforces.com/problemset/problem/421/A)|Codeforces|Coder-Strike 2014 - Finals (online edition, Div. 2)|4|\n|<ul><li>- [ ] Done</li></ul>|131|[Ciel the Commander](http://codeforces.com/problemset/problem/321/C)|Codeforces|Codeforces Round #190 (Div. 1) & Codeforces Round #190 (Div. 2)|4|\n|<ul><li>- [ ] Done</li></ul>|132|[The Closest Pair](http://codeforces.com/problemset/problem/311/A)|Codeforces|Codeforces Round #185 (Div. 1) & Codeforces Round #185 (Div. 2)|4|\n|<ul><li>- [ ] Done</li></ul>|133|[Strange Addition](http://codeforces.com/problemset/problem/305/A)|Codeforces|Codeforces Round #184 (Div. 2)|4|\n|<ul><li>- [ ] Done</li></ul>|134|[Yaroslav and Sequence](http://codeforces.com/problemset/problem/301/A)|Codeforces|Codeforces Round #182 (Div. 1) & Codeforces Round #182 (Div. 2)|4|\n|<ul><li>- [ ] Done</li></ul>|135|[Fish Weight](http://codeforces.com/problemset/problem/297/B)|Codeforces|Codeforces Round #180 (Div. 1) & Codeforces Round #180 (Div. 2)|4|\n|<ul><li>- [ ] Done</li></ul>|136|[Parity Game](http://codeforces.com/problemset/problem/297/A)|Codeforces|Codeforces Round #180 (Div. 1) & Codeforces Round #180 (Div. 2)|4|\n|<ul><li>- [ ] Done</li></ul>|137|[Lucky Permutation](http://codeforces.com/problemset/problem/286/A)|Codeforces|Codeforces Round #176 (Div. 1) & Codeforces Round #176 (Div. 2)|4|\n|<ul><li>- [ ] Done</li></ul>|138|[Secret](http://codeforces.com/problemset/problem/271/C)|Codeforces|Codeforces Round #166 (Div. 2)|4|\n|<ul><li>- [ ] Done</li></ul>|139|[Mountain Scenery](http://codeforces.com/problemset/problem/218/A)|Codeforces|Codeforces Round #134 (Div. 2)|4|\n|<ul><li>- [ ] Done</li></ul>|140|[Toy Sum](http://codeforces.com/problemset/problem/405/D)|Codeforces|Codeforces Round #238 (Div. 2) & Codeforces Round #238 (Div. 1)|4|\n|<ul><li>- [ ] Done</li></ul>|141|[Marco and GCD Sequence](http://codeforces.com/problemset/problem/894/C)|Codeforces|Codeforces Round #447 (Div. 2)|4|\n|<ul><li>- [ ] Done</li></ul>|142|[Beauty Pageant](http://codeforces.com/problemset/problem/246/C)|Codeforces|Codeforces Round #151 (Div. 2)|5|\n|<ul><li>- [ ] Done</li></ul>|143|[Restoring Table](http://codeforces.com/problemset/problem/245/D)|Codeforces|CROC-MBTU 2012, Elimination Round (ACM-ICPC)|5|\n|<ul><li>- [ ] Done</li></ul>|144|[Not Wool Sequences](http://codeforces.com/problemset/problem/238/A)|Codeforces|Codeforces Round #148 (Div. 1) & Codeforces Round #148 (Div. 2)|5|\n|<ul><li>- [ ] Done</li></ul>|145|[Cycles](http://codeforces.com/problemset/problem/232/A)|Codeforces|Codeforces Round #144 (Div. 1) & Codeforces Round #144 (Div. 2)|5|\n|<ul><li>- [ ] Done</li></ul>|146|[Clear Symmetry](http://codeforces.com/problemset/problem/201/A)|Codeforces|Codeforces Round #127 (Div. 1) & Codeforces Round #127 (Div. 2)|5|\n|<ul><li>- [ ] Done</li></ul>|147|[Discounts](http://codeforces.com/problemset/problem/161/B)|Codeforces|VK Cup 2012 Round 1|5|\n|<ul><li>- [ ] Done</li></ul>|148|[Terse princess](http://codeforces.com/problemset/problem/148/C)|Codeforces|Codeforces Round #105 (Div. 2)|5|\n|<ul><li>- [ ] Done</li></ul>|149|[Lucky Number 2](http://codeforces.com/problemset/problem/145/B)|Codeforces|Codeforces Round #104 (Div. 1) & Codeforces Round #104 (Div. 2)|5|\n|<ul><li>- [ ] Done</li></ul>|150|[Queue](http://codeforces.com/problemset/problem/141/C)|Codeforces|Codeforces Round #101 (Div. 2)|5|\n|<ul><li>- [ ] Done</li></ul>|151|[Domino](http://codeforces.com/problemset/problem/85/A)|Codeforces|Yandex.Algorithm 2011 Round 1|5|\n|<ul><li>- [ ] Done</li></ul>|152|[Sets](http://codeforces.com/problemset/problem/82/B)|Codeforces|Yandex.Algorithm 2011 Qualification 2|5|\n|<ul><li>- [ ] Done</li></ul>|153|[Petya and His Friends](http://codeforces.com/problemset/problem/66/D)|Codeforces|Codeforces Beta Round #61 (Div. 2)|5|\n|<ul><li>- [ ] Done</li></ul>|154|[Find Color](http://codeforces.com/problemset/problem/40/A)|Codeforces|Codeforces Beta Round #39|5|\n|<ul><li>- [ ] Done</li></ul>|155|[Unordered Subsequence](http://codeforces.com/problemset/problem/27/C)|Codeforces|Codeforces Beta Round #27 (Codeforces format, Div. 2)|5|\n|<ul><li>- [ ] Done</li></ul>|156|[Four Segments](http://codeforces.com/problemset/problem/14/C)|Codeforces|Codeforces Beta Round #14 (Div. 2)|5|\n|<ul><li>- [ ] Done</li></ul>|157|[Obsession with Robots](http://codeforces.com/problemset/problem/8/B)|Codeforces|Codeforces Beta Round #8|5|\n|<ul><li>- [ ] Done</li></ul>|158|[Stammering Aliens](https://uva.onlinejudge.org/index.php?option=onlinejudge&page=show_problem&problem=3358)|UVA||5|\n|<ul><li>- [ ] Done</li></ul>|159|[Simple Subset](http://codeforces.com/problemset/problem/665/D)|Codeforces|Educational Codeforces Round 12|5|\n|<ul><li>- [ ] Done</li></ul>|160|[Optimal Number Permutation](http://codeforces.com/problemset/problem/622/D)|Codeforces|Educational Codeforces Round 7|5|\n|<ul><li>- [ ] Done</li></ul>|161|[Points on Plane](http://codeforces.com/problemset/problem/576/C)|Codeforces|Codeforces Round #319 (Div. 1) & Codeforces Round #319 (Div. 2)|5|\n|<ul><li>- [ ] Done</li></ul>|162|[Tablecity](http://codeforces.com/problemset/problem/575/D)|Codeforces|Bubble Cup 8 - Finals [Online Mirror]|5|\n|<ul><li>- [ ] Done</li></ul>|163|[Kyoya and Permutation](http://codeforces.com/problemset/problem/553/B)|Codeforces|Codeforces Round #309 (Div. 1) & Codeforces Round #309 (Div. 2)|5|\n|<ul><li>- [ ] Done</li></ul>|164|[Handshakes](http://codeforces.com/problemset/problem/534/D)|Codeforces|Codeforces Round #298 (Div. 2)|5|\n|<ul><li>- [ ] Done</li></ul>|165|[Correcting Mistakes](http://codeforces.com/problemset/problem/533/E)|Codeforces|VK Cup 2015 - Round 2 (unofficial online mirror, Div. 1 only)|5|\n|<ul><li>- [ ] Done</li></ul>|166|[Candy Boxes](http://codeforces.com/problemset/problem/488/B)|Codeforces|Codeforces Round #278 (Div. 2)|5|\n|<ul><li>- [ ] Done</li></ul>|167|[4-point polyline](http://codeforces.com/problemset/problem/452/B)|Codeforces|MemSQL Start[c]UP 2.0 - Round 1|5|\n|<ul><li>- [ ] Done</li></ul>|168|[Points and Segments (easy)](http://codeforces.com/problemset/problem/430/A)|Codeforces|Codeforces Round #245 (Div. 2)|5|\n|<ul><li>- [ ] Done</li></ul>|169|[Fox and Minimal path](http://codeforces.com/problemset/problem/388/B)|Codeforces|Codeforces Round #228 (Div. 1) & Codeforces Round #228 (Div. 2)|5|\n|<ul><li>- [ ] Done</li></ul>|170|[Queue](http://codeforces.com/problemset/problem/353/D)|Codeforces|Codeforces Round #205 (Div. 2)|5|\n|<ul><li>- [ ] Done</li></ul>|171|[Two Heaps](http://codeforces.com/problemset/problem/353/B)|Codeforces|Codeforces Round #205 (Div. 2)|5|\n|<ul><li>- [ ] Done</li></ul>|172|[Block Tower](http://codeforces.com/problemset/problem/327/D)|Codeforces|Codeforces Round #191 (Div. 2)|5|\n|<ul><li>- [ ] Done</li></ul>|173|[Convex Shape](http://codeforces.com/problemset/problem/275/B)|Codeforces|Codeforces Round #168 (Div. 2)|5|\n|<ul><li>- [ ] Done</li></ul>|174|[Suspects](http://codeforces.com/problemset/problem/156/B)|Codeforces|Codeforces Round #110 (Div. 1) & Codeforces Round #110 (Div. 2)|5|\n|<ul><li>- [ ] Done</li></ul>|175|[Help General](http://codeforces.com/problemset/problem/142/B)|Codeforces|Codeforces Round #102 (Div. 1) & Codeforces Round #102 (Div. 2)|5|\n|<ul><li>- [ ] Done</li></ul>|176|[Gluttony](http://codeforces.com/problemset/problem/891/B)|Codeforces|Codeforces Round #446 (Div. 1) & Codeforces Round #446 (Div. 2)|5|\n|<ul><li>- [ ] Done</li></ul>|177|[Timofey and rectangles](http://codeforces.com/problemset/problem/763/B)|Codeforces|Codeforces Round #395 (Div. 1) & Codeforces Round #395 (Div. 2)|5|\n|<ul><li>- [ ] Done</li></ul>|178|[Complete The Graph](http://codeforces.com/problemset/problem/715/B)|Codeforces|Codeforces Round #372 (Div. 1) & Codeforces Round #372 (Div. 2)|5|\n|<ul><li>- [ ] Done</li></ul>|179|[Maxim and Array](http://codeforces.com/problemset/problem/721/D)|Codeforces|Codeforces Round #374 (Div. 2)|5|\n|<ul><li>- [ ] Done</li></ul>|180|[Dispute](http://codeforces.com/problemset/problem/242/D)|Codeforces|Codeforces Round #149 (Div. 2)|6|\n|<ul><li>- [ ] Done</li></ul>|181|[Mathematical Analysis Rocks!](http://codeforces.com/problemset/problem/180/F)|Codeforces|Codeforces Round #116 (Div. 2, ACM-ICPC Rules)|6|\n|<ul><li>- [ ] Done</li></ul>|182|[Zero-One](http://codeforces.com/problemset/problem/135/C)|Codeforces|Codeforces Beta Round #97 (Div. 1) & Codeforces Beta Round #97 (Div. 2)|6|\n|<ul><li>- [ ] Done</li></ul>|183|[String](http://codeforces.com/problemset/problem/128/B)|Codeforces|Codeforces Beta Round #94 (Div. 1 Only) & Codeforces Beta Round #94 (Div. 2 Only)|6|\n|<ul><li>- [ ] Done</li></ul>|184|[3-cycles](http://codeforces.com/problemset/problem/41/E)|Codeforces|Codeforces Beta Round #40 (Div. 2)|6|\n|<ul><li>- [ ] Done</li></ul>|185|[Ant on the Tree](http://codeforces.com/problemset/problem/29/D)|Codeforces|Codeforces Beta Round #29 (Div. 2, Codeforces format)|6|\n|<ul><li>- [ ] Done</li></ul>|186|[Party](http://codeforces.com/problemset/problem/23/B)|Codeforces|Codeforces Beta Round #23|6|\n|<ul><li>- [ ] Done</li></ul>|187|[International Olympiad](http://codeforces.com/problemset/problem/662/D)|Codeforces|CROC 2016 - Final Round [Private, For Onsite Finalists Only]|6|\n|<ul><li>- [ ] Done</li></ul>|188|[Anton and Ira](http://codeforces.com/problemset/problem/584/E)|Codeforces|Codeforces Round #324 (Div. 2)|6|\n|<ul><li>- [ ] Done</li></ul>|189|[Invariance of Tree](http://codeforces.com/problemset/problem/576/B)|Codeforces|Codeforces Round #319 (Div. 1) & Codeforces Round #319 (Div. 2)|6|\n|<ul><li>- [ ] Done</li></ul>|190|[Brackets in Implications](http://codeforces.com/problemset/problem/550/E)|Codeforces|Codeforces Round #306 (Div. 2)|6|\n|<ul><li>- [ ] Done</li></ul>|191|[Looksery Party](http://codeforces.com/problemset/problem/549/B)|Codeforces|Looksery Cup 2015|6|\n|<ul><li>- [ ] Done</li></ul>|192|[Prefix Product Sequence](http://codeforces.com/problemset/problem/487/C)|Codeforces|Codeforces Round #278 (Div. 1) & Codeforces Round #278 (Div. 2)|6|\n|<ul><li>- [ ] Done</li></ul>|193|[Little Pony and Summer Sun Celebration](http://codeforces.com/problemset/problem/453/C)|Codeforces|Codeforces Round #259 (Div. 1) & Codeforces Round #259 (Div. 2)|6|\n|<ul><li>- [ ] Done</li></ul>|194|[Jzzhu and Apples](http://codeforces.com/problemset/problem/449/C)|Codeforces|Codeforces Round #257 (Div. 1) & Codeforces Round #257 (Div. 2)|6|\n|<ul><li>- [ ] Done</li></ul>|195|[Mittens](http://codeforces.com/problemset/problem/370/C)|Codeforces|Codeforces Round #217 (Div. 2)|6|\n|<ul><li>- [ ] Done</li></ul>|196|[Dima and Containers](http://codeforces.com/problemset/problem/358/C)|Codeforces|Codeforces Round #208 (Div. 2)|6|\n|<ul><li>- [ ] Done</li></ul>|197|[Compartments](http://codeforces.com/problemset/problem/356/C)|Codeforces|Codeforces Round #207 (Div. 1) & Codeforces Round #207 (Div. 2)|6|\n|<ul><li>- [ ] Done</li></ul>|198|[Palindrome](http://codeforces.com/problemset/problem/335/B)|Codeforces|MemSQL start[c]up Round 2 - online version|6|\n|<ul><li>- [ ] Done</li></ul>|199|[Banana](http://codeforces.com/problemset/problem/335/A)|Codeforces|MemSQL start[c]up Round 2 - online version|6|\n|<ul><li>- [ ] Done</li></ul>|200|[Flawed Flow](http://codeforces.com/problemset/problem/269/C)|Codeforces|Codeforces Round #165 (Div. 1) & Codeforces Round #165 (Div. 2)|6|\n|<ul><li>- [ ] Done</li></ul>|201|[Below the Diagonal](http://codeforces.com/problemset/problem/266/C)|Codeforces|Codeforces Round #163 (Div. 2)|6|\n|<ul><li>- [ ] Done</li></ul>|202|[Practice](http://codeforces.com/problemset/problem/234/G)|Codeforces|Codeforces Round #145 (Div. 2, ACM-ICPC Rules) & Codeforces Round #145 (Div. 1, ACM-ICPC Rules)|6|\n|<ul><li>- [ ] Done</li></ul>|203|[Rooter's Song](http://codeforces.com/problemset/problem/848/B)|Codeforces|Codeforces Round #431 (Div. 1) & Codeforces Round #431 (Div. 2)|6|\n|<ul><li>- [ ] Done</li></ul>|204|[Leha and another game about graph](http://codeforces.com/problemset/problem/840/B)|Codeforces|Codeforces Round #429 (Div. 1) & Codeforces Round #429 (Div. 2)|6|\n|<ul><li>- [ ] Done</li></ul>|205|[Searching Rectangles](http://codeforces.com/problemset/problem/713/B)|Codeforces|Codeforces Round #371 (Div. 1) & Codeforces Round #371 (Div. 2)|6|\n|<ul><li>- [ ] Done</li></ul>|206|[Karen and Test](http://codeforces.com/problemset/problem/815/B)|Codeforces|Codeforces Round #419 (Div. 1) & Codeforces Round #419 (Div. 2)|6|\n|<ul><li>- [ ] Done</li></ul>|207|[Arpa’s overnight party and Mehrdad’s silent entering](http://codeforces.com/problemset/problem/741/C)|Codeforces|Codeforces Round #383 (Div. 1) & Codeforces Round #383 (Div. 2)|6|\n|<ul><li>- [ ] Done</li></ul>|208|[Vladik and Favorite Game](http://codeforces.com/problemset/problem/811/D)|Codeforces|Codeforces Round #416 (Div. 2)|6|\n|<ul><li>- [ ] Done</li></ul>|209|[Mahmoud and a xor trip](http://codeforces.com/problemset/problem/766/E)|Codeforces|Codeforces Round #396 (Div. 2)|6|\n|<ul><li>- [ ] Done</li></ul>|210|[Mike and distribution](http://codeforces.com/problemset/problem/798/D)|Codeforces|Codeforces Round #410 (Div. 2)|6|\n|<ul><li>- [ ] Done</li></ul>|211|[Boring Partition](http://codeforces.com/problemset/problem/238/B)|Codeforces|Codeforces Round #148 (Div. 1) & Codeforces Round #148 (Div. 2)|7|\n|<ul><li>- [ ] Done</li></ul>|212|[Numbers](http://codeforces.com/problemset/problem/128/D)|Codeforces|Codeforces Beta Round #94 (Div. 1 Only)|7|\n|<ul><li>- [ ] Done</li></ul>|213|[Hobbits' Party](http://codeforces.com/problemset/problem/125/C)|Codeforces|Codeforces Testing Round #2|7|\n|<ul><li>- [ ] Done</li></ul>|214|[Before Exam](http://codeforces.com/problemset/problem/119/B)|Codeforces|Codeforces Beta Round #90|7|\n|<ul><li>- [ ] Done</li></ul>|215|[Russian Roulette](http://codeforces.com/problemset/problem/103/C)|Codeforces|Codeforces Beta Round #80 (Div. 1 Only) & Codeforces Beta Round #80 (Div. 2 Only)|7|\n|<ul><li>- [ ] Done</li></ul>|216|[Disposition](http://codeforces.com/problemset/problem/49/C)|Codeforces|Codeforces Beta Round #46 (Div. 2)|7|\n|<ul><li>- [ ] Done</li></ul>|217|[Journey](http://codeforces.com/problemset/problem/43/D)|Codeforces|Codeforces Beta Round #42 (Div. 2)|7|\n|<ul><li>- [ ] Done</li></ul>|218|[Necklace](http://codeforces.com/problemset/problem/613/C)|Codeforces|Codeforces Round #339 (Div. 1) & Codeforces Round #339 (Div. 2)|7|\n|<ul><li>- [ ] Done</li></ul>|219|[Square Root of Permutation](http://codeforces.com/problemset/problem/612/E)|Codeforces|Educational Codeforces Round 4|7|\n|<ul><li>- [ ] Done</li></ul>|220|[Bear and Drawing](http://codeforces.com/problemset/problem/573/C)|Codeforces|Codeforces Round #318 [RussianCodeCup Thanks-Round] (Div. 1) & Codeforces Round #318 [RussianCodeCup Thanks-Round] (Div. 2)|7|\n|<ul><li>- [ ] Done</li></ul>|221|[Idempotent functions](http://codeforces.com/problemset/problem/542/C)|Codeforces|VK Cup 2015 - Round 3 (unofficial online mirror, Div. 1 only)|7|\n|<ul><li>- [ ] Done</li></ul>|222|[Restoring Numbers](http://codeforces.com/problemset/problem/509/D)|Codeforces|Codeforces Round #289 (Div. 2, ACM ICPC Rules)|7|\n|<ul><li>- [ ] Done</li></ul>|223|[Sign on Fence](http://codeforces.com/problemset/problem/484/E)|Codeforces|Codeforces Round #276 (Div. 1)|7|\n|<ul><li>- [ ] Done</li></ul>|224|[Kamal-ol-molk's Painting](http://codeforces.com/problemset/problem/475/C)|Codeforces|Bayan 2015 Contest Warm Up|7|\n|<ul><li>- [ ] Done</li></ul>|225|[Hack it!](http://codeforces.com/problemset/problem/468/C)|Codeforces|Codeforces Round #268 (Div. 1) & Codeforces Round #268 (Div. 2)|7|\n|<ul><li>- [ ] Done</li></ul>|226|[Little Victor and Set](http://codeforces.com/problemset/problem/460/D)|Codeforces|Codeforces Round #262 (Div. 2)|7|\n|<ul><li>- [ ] Done</li></ul>|227|[Valera and Swaps](http://codeforces.com/problemset/problem/441/D)|Codeforces|Codeforces Round #252 (Div. 2)|7|\n|<ul><li>- [ ] Done</li></ul>|228|[Guess the Tree](http://codeforces.com/problemset/problem/429/C)|Codeforces|Codeforces Round #245 (Div. 1) & Codeforces Round #245 (Div. 2)|7|\n|<ul><li>- [ ] Done</li></ul>|229|[Square Table](http://codeforces.com/problemset/problem/417/E)|Codeforces|RCC 2014 Warmup (Div. 2) & RCC 2014 Warmup (Div. 1)|7|\n|<ul><li>- [ ] Done</li></ul>|230|[Lucky Number Representation](http://codeforces.com/problemset/problem/354/E)|Codeforces|Codeforces Round #206 (Div. 1)|7|\n|<ul><li>- [ ] Done</li></ul>|231|[Wrong Floyd](http://codeforces.com/problemset/problem/350/E)|Codeforces|Codeforces Round #203 (Div. 2)|7|\n|<ul><li>- [ ] Done</li></ul>|232|[Graph Reconstruction](http://codeforces.com/problemset/problem/329/C)|Codeforces|Codeforces Round #192 (Div. 1) & Codeforces Round #192 (Div. 2)|7|\n|<ul><li>- [ ] Done</li></ul>|233|[Axis Walking](http://codeforces.com/problemset/problem/327/E)|Codeforces|Codeforces Round #191 (Div. 2)|7|\n|<ul><li>- [ ] Done</li></ul>|234|[Splitting the Uniqueness](http://codeforces.com/problemset/problem/297/C)|Codeforces|Codeforces Round #180 (Div. 1) & Codeforces Round #180 (Div. 2)|7|\n|<ul><li>- [ ] Done</li></ul>|235|[Set of Points](http://codeforces.com/problemset/problem/277/B)|Codeforces|Codeforces Round #170 (Div. 1) & Codeforces Round #170 (Div. 2)|7|\n|<ul><li>- [ ] Done</li></ul>|236|[Dima and Horses](http://codeforces.com/problemset/problem/272/E)|Codeforces|Codeforces Round #167 (Div. 2) & Codeforces Round #167 (Div. 1)|7|\n|<ul><li>- [ ] Done</li></ul>|237|[Maxim and Matrix](http://codeforces.com/problemset/problem/261/C)|Codeforces|Codeforces Round #160 (Div. 1) & Codeforces Round #160 (Div. 2)|7|\n|<ul><li>- [ ] Done</li></ul>|238|[Black and White Tree](http://codeforces.com/problemset/problem/260/D)|Codeforces|Codeforces Round #158 (Div. 2)|7|\n|<ul><li>- [ ] Done</li></ul>|239|[The table](http://codeforces.com/problemset/problem/226/D)|Codeforces|Codeforces Round #140 (Div. 1)|7|\n|<ul><li>- [ ] Done</li></ul>|240|[Graph Cutting](http://codeforces.com/problemset/problem/405/E)|Codeforces|Codeforces Round #238 (Div. 2) & Codeforces Round #238 (Div. 1)|7|\n|<ul><li>- [ ] Done</li></ul>|241|[Data Center Drama](http://codeforces.com/problemset/problem/527/E)|Codeforces|Codeforces Round #296 (Div. 2) & Codeforces Round #296 (Div. 1)|7|\n|<ul><li>- [ ] Done</li></ul>|242|[Vladik and chat](http://codeforces.com/problemset/problem/754/C)|Codeforces|Codeforces Round #390 (Div. 2)|7|\n|<ul><li>- [ ] Done</li></ul>|243|[Challenging Balloons](http://codeforces.com/problemset/problem/241/G)|Codeforces|Bayan 2012-2013 Elimination Round (ACM ICPC Rules, English statements)|8|\n|<ul><li>- [ ] Done</li></ul>|244|[Trails and Glades](http://codeforces.com/problemset/problem/209/C)|Codeforces|VK Cup 2012 Finals, Practice Session|8|\n|<ul><li>- [ ] Done</li></ul>|245|[Hamming Distance](http://codeforces.com/problemset/problem/193/C)|Codeforces|Codeforces Round #122 (Div. 1) & Codeforces Round #122 (Div. 2)|8|\n|<ul><li>- [ ] Done</li></ul>|246|[Headquarters](http://codeforces.com/problemset/problem/183/A)|Codeforces|Croc Champ 2012 - Final|8|\n|<ul><li>- [ ] Done</li></ul>|247|[Playing with Superglue](http://codeforces.com/problemset/problem/176/C)|Codeforces|Croc Champ 2012 - Round 2|8|\n|<ul><li>- [ ] Done</li></ul>|248|[Clearing Up](http://codeforces.com/problemset/problem/141/E)|Codeforces|Codeforces Round #101 (Div. 2)|8|\n|<ul><li>- [ ] Done</li></ul>|249|[Swaps](http://codeforces.com/problemset/problem/134/C)|Codeforces|Codeforces Testing Round #3|8|\n|<ul><li>- [ ] Done</li></ul>|250|[Constants in the language of Shakespeare](http://codeforces.com/problemset/problem/132/D)|Codeforces|Codeforces Beta Round #96 (Div. 1)|8|\n|<ul><li>- [ ] Done</li></ul>|251|[E-reader Display](http://codeforces.com/problemset/problem/126/C)|Codeforces|Codeforces Beta Round #93 (Div. 1 Only) & Codeforces Beta Round #93 (Div. 2 Only)|8|\n|<ul><li>- [ ] Done</li></ul>|252|[Lucky Sorting](http://codeforces.com/problemset/problem/109/D)|Codeforces|Codeforces Beta Round #84 (Div. 1 Only)|8|\n|<ul><li>- [ ] Done</li></ul>|253|[Superset](http://codeforces.com/problemset/problem/97/B)|Codeforces|Yandex.Algorithm 2011 Finals|8|\n|<ul><li>- [ ] Done</li></ul>|254|[Polycarp's Picture Gallery](http://codeforces.com/problemset/problem/81/D)|Codeforces|Yandex.Algorithm Open 2011 Qualification 1|8|\n|<ul><li>- [ ] Done</li></ul>|255|[Dividing Island](http://codeforces.com/problemset/problem/63/D)|Codeforces|Codeforces Beta Round #59 (Div. 2)|8|\n|<ul><li>- [ ] Done</li></ul>|256|[Team Arrangement](http://codeforces.com/problemset/problem/59/D)|Codeforces|Codeforces Beta Round #55 (Div. 2)|8|\n|<ul><li>- [ ] Done</li></ul>|257|[Planting Trees](http://codeforces.com/problemset/problem/45/J)|Codeforces|School Team Contest #3 (Winter Computer School 2010/11)|8|\n|<ul><li>- [ ] Done</li></ul>|258|[Director](http://codeforces.com/problemset/problem/45/E)|Codeforces|School Team Contest #3 (Winter Computer School 2010/11)|8|\n|<ul><li>- [ ] Done</li></ul>|259|[Triminoes](http://codeforces.com/problemset/problem/44/J)|Codeforces|School Team Contest #2 (Winter Computer School 2010/11)|8|\n|<ul><li>- [ ] Done</li></ul>|260|[Safe cracking](http://codeforces.com/problemset/problem/42/C)|Codeforces|Codeforces Beta Round #41|8|\n|<ul><li>- [ ] Done</li></ul>|261|[Tricky and Clever Password](http://codeforces.com/problemset/problem/30/E)|Codeforces|Codeforces Beta Round #30 (Codeforces format)|8|\n|<ul><li>- [ ] Done</li></ul>|262|[Parquet](http://codeforces.com/problemset/problem/26/C)|Codeforces|Codeforces Beta Round #26 (Codeforces format)|8|\n|<ul><li>- [ ] Done</li></ul>|263|[Oranges and Apples](http://codeforces.com/problemset/problem/23/C)|Codeforces|Codeforces Beta Round #23|8|\n|<ul><li>- [ ] Done</li></ul>|264|[Start of the session](http://codeforces.com/problemset/problem/12/E)|Codeforces|Codeforces Beta Round #12 (Div 2 Only)|8|\n|<ul><li>- [ ] Done</li></ul>|265|[Greedy Change](http://codeforces.com/problemset/problem/10/E)|Codeforces|Codeforces Beta Round #10|8|\n|<ul><li>- [ ] Done</li></ul>|266|[Finals in arithmetic](http://codeforces.com/problemset/problem/625/D)|Codeforces|Codeforces Round #342 (Div. 2)|8|\n|<ul><li>- [ ] Done</li></ul>|267|[Double Knapsack](http://codeforces.com/problemset/problem/618/F)|Codeforces|Wunder Fund Round 2016 (Div. 1 + Div. 2 combined)|8|\n|<ul><li>- [ ] Done</li></ul>|268|[CNF 2](http://codeforces.com/problemset/problem/571/C)|Codeforces|Codeforces Round #317 [AimFund Thanks-Round] (Div. 1) & Codeforces Round #317 [AimFund Thanks-Round] (Div. 2)|8|\n|<ul><li>- [ ] Done</li></ul>|269|[Square Tiling](http://codeforces.com/problemset/problem/432/E)|Codeforces|Codeforces Round #246 (Div. 2)|8|\n|<ul><li>- [ ] Done</li></ul>|270|[Biathlon Track](http://codeforces.com/problemset/problem/424/D)|Codeforces|Codeforces Round #242 (Div. 2)|8|\n|<ul><li>- [ ] Done</li></ul>|271|[Dominoes](http://codeforces.com/problemset/problem/394/C)|Codeforces|Codeforces Round #231 (Div. 2)|8|\n|<ul><li>- [ ] Done</li></ul>|272|[Inna and Sweet Matrix](http://codeforces.com/problemset/problem/390/D)|Codeforces|Codeforces Round #229 (Div. 2)|8|\n|<ul><li>- [ ] Done</li></ul>|273|[Broken Monitor](http://codeforces.com/problemset/problem/370/D)|Codeforces|Codeforces Round #217 (Div. 2)|8|\n|<ul><li>- [ ] Done</li></ul>|274|[Bags and Coins](http://codeforces.com/problemset/problem/356/D)|Codeforces|Codeforces Round #207 (Div. 1)|8|\n|<ul><li>- [ ] Done</li></ul>|275|[Three Swaps](http://codeforces.com/problemset/problem/339/E)|Codeforces|Codeforces Round #197 (Div. 2)|8|\n|<ul><li>- [ ] Done</li></ul>|276|[Black-and-White Cube](http://codeforces.com/problemset/problem/323/A)|Codeforces|Testing Round #7|8|\n|<ul><li>- [ ] Done</li></ul>|277|[Balance](http://codeforces.com/problemset/problem/317/C)|Codeforces|Codeforces Round #188 (Div. 1) & Codeforces Round #188 (Div. 2)|8|\n|<ul><li>- [ ] Done</li></ul>|278|[Ilya and Two Numbers](http://codeforces.com/problemset/problem/313/E)|Codeforces|Codeforces Round #186 (Div. 2)|8|\n|<ul><li>- [ ] Done</li></ul>|279|[Yaroslav and Algorithm](http://codeforces.com/problemset/problem/301/C)|Codeforces|Codeforces Round #182 (Div. 1) & Codeforces Round #182 (Div. 2)|8|\n|<ul><li>- [ ] Done</li></ul>|280|[Ladies' Shop](http://codeforces.com/problemset/problem/286/E)|Codeforces|Codeforces Round #176 (Div. 1)|8|\n|<ul><li>- [ ] Done</li></ul>|281|[Three Horses](http://codeforces.com/problemset/problem/271/E)|Codeforces|Codeforces Round #166 (Div. 2)|8|\n|<ul><li>- [ ] Done</li></ul>|282|[Merging Two Decks](http://codeforces.com/problemset/problem/234/H)|Codeforces|Codeforces Round #145 (Div. 2, ACM-ICPC Rules) & Codeforces Round #145 (Div. 1, ACM-ICPC Rules)|8|\n|<ul><li>- [ ] Done</li></ul>|283|[Stars](http://codeforces.com/problemset/problem/213/D)|Codeforces|Codeforces Round #131 (Div. 1)|9|\n|<ul><li>- [ ] Done</li></ul>|284|[Pixels](http://codeforces.com/problemset/problem/209/B)|Codeforces|VK Cup 2012 Finals, Practice Session|9|\n|<ul><li>- [ ] Done</li></ul>|285|[Deputies](http://codeforces.com/problemset/problem/173/D)|Codeforces|Croc Champ 2012 - Round 1|9|\n|<ul><li>- [ ] Done</li></ul>|286|[Two progressions](http://codeforces.com/problemset/problem/125/D)|Codeforces|Codeforces Testing Round #2|9|\n|<ul><li>- [ ] Done</li></ul>|287|[Tetris revisited](http://codeforces.com/problemset/problem/86/B)|Codeforces|Yandex.Algorithm 2011 Round 2|9|\n|<ul><li>- [ ] Done</li></ul>|288|[Strange town](http://codeforces.com/problemset/problem/42/D)|Codeforces|Codeforces Beta Round #41|9|\n|<ul><li>- [ ] Done</li></ul>|289|[Two Paths](http://codeforces.com/problemset/problem/36/E)|Codeforces|Codeforces Beta Round #36|9|\n|<ul><li>- [ ] Done</li></ul>|290|[Multithreading](http://codeforces.com/problemset/problem/26/E)|Codeforces|Codeforces Beta Round #26 (Codeforces format)|9|\n|<ul><li>- [ ] Done</li></ul>|291|[Beautiful Function](http://codeforces.com/problemset/problem/593/C)|Codeforces|Codeforces Round #329 (Div. 2)|9|\n|<ul><li>- [ ] Done</li></ul>|292|[Walking!](http://codeforces.com/problemset/problem/578/E)|Codeforces|Codeforces Round #320 (Div. 1) [Bayan Thanks-Round]|9|\n|<ul><li>- [ ] Done</li></ul>|293|[Replicating Processes](http://codeforces.com/problemset/problem/566/B)|Codeforces|VK Cup 2015 - Finals, online mirror|9|\n|<ul><li>- [ ] Done</li></ul>|294|[Berland Local Positioning System](http://codeforces.com/problemset/problem/534/E)|Codeforces|Codeforces Round #298 (Div. 2)|9|\n|<ul><li>- [ ] Done</li></ul>|295|[Constrained Tree](http://codeforces.com/problemset/problem/513/D2)|Codeforces|Rockethon 2015|9|\n|<ul><li>- [ ] Done</li></ul>|296|[Fox And Polygon](http://codeforces.com/problemset/problem/512/E)|Codeforces|Codeforces Round #290 (Div. 1)|9|\n|<ul><li>- [ ] Done</li></ul>|297|[Design Tutorial: Change the Goal](http://codeforces.com/problemset/problem/472/F)|Codeforces|Codeforces Round #270|9|\n|<ul><li>- [ ] Done</li></ul>|298|[Tree and Array](http://codeforces.com/problemset/problem/398/C)|Codeforces|Codeforces Round #233 (Div. 1) & Codeforces Round #233 (Div. 2)|9|\n|<ul><li>- [ ] Done</li></ul>|299|[Candies Game](http://codeforces.com/problemset/problem/341/E)|Codeforces|Codeforces Round #198 (Div. 1)|9|\n|<ul><li>- [ ] Done</li></ul>|300|[Lucky Tickets](http://codeforces.com/problemset/problem/333/C)|Codeforces|Codeforces Round #194 (Div. 1) & Codeforces Round #194 (Div. 2)|9|\n|<ul><li>- [ ] Done</li></ul>|301|[The Evil Temple and the Moving Rocks](http://codeforces.com/problemset/problem/329/D)|Codeforces|Codeforces Round #192 (Div. 1)|9|\n|<ul><li>- [ ] Done</li></ul>|302|[Tournament-graph](http://codeforces.com/problemset/problem/323/B)|Codeforces|Testing Round #7|9|\n|<ul><li>- [ ] Done</li></ul>|303|[Color the Carpet](http://codeforces.com/problemset/problem/297/D)|Codeforces|Codeforces Round #180 (Div. 1)|9|\n|<ul><li>- [ ] Done</li></ul>|304|[Grocer's Problem](http://codeforces.com/problemset/problem/91/D)|Codeforces|Codeforces Beta Round #75 (Div. 1 Only)|9|\n|<ul><li>- [ ] Done</li></ul>|305|[Parquet Re-laying](http://codeforces.com/problemset/problem/778/D)|Codeforces|Codeforces Round #402 (Div. 1)|9|\n|<ul><li>- [ ] Done</li></ul>|306|[Mister B and Flight to the Moon](http://codeforces.com/problemset/problem/819/E)|Codeforces|Codeforces Round #421 (Div. 1)|9|\n|<ul><li>- [ ] Done</li></ul>|307|[Mike and code of a permutation](http://codeforces.com/problemset/problem/798/E)|Codeforces|Codeforces Round #410 (Div. 2)|9|\n|<ul><li>- [ ] Done</li></ul>|308|[Doe Graphs](http://codeforces.com/problemset/problem/232/C)|Codeforces|Codeforces Round #144 (Div. 1) & Codeforces Round #144 (Div. 2)|10|\n|<ul><li>- [ ] Done</li></ul>|309|[Cube Snake](http://codeforces.com/problemset/problem/198/D)|Codeforces|Codeforces Round #125 (Div. 1)|10|\n|<ul><li>- [ ] Done</li></ul>|310|[Help Monks](http://codeforces.com/problemset/problem/98/D)|Codeforces|Codeforces Beta Round #78 (Div. 1 Only)|10|\n|<ul><li>- [ ] Done</li></ul>|311|[Shift It!](http://codeforces.com/problemset/problem/74/E)|Codeforces|Codeforces Beta Round #68|10|\n|<ul><li>- [ ] Done</li></ul>|312|[Black and White](http://codeforces.com/problemset/problem/48/H)|Codeforces|School Personal Contest #3 (Winter Computer School 2010/11) - Codeforces Beta Round #45 (ACM-ICPC Rules)|10|\n|<ul><li>- [ ] Done</li></ul>|313|[Ants on a Circle](http://codeforces.com/problemset/problem/652/F)|Codeforces|Educational Codeforces Round 10|10|\n|<ul><li>- [ ] Done</li></ul>|314|[New Year  and Forgotten Tree](http://codeforces.com/problemset/problem/611/H)|Codeforces|Good Bye 2015|10|\n|<ul><li>- [ ] Done</li></ul>|315|[Restoring Map](http://codeforces.com/problemset/problem/566/E)|Codeforces|VK Cup 2015 - Finals, online mirror|10|\n|<ul><li>- [ ] Done</li></ul>|316|[Listening to Music](http://codeforces.com/problemset/problem/543/E)|Codeforces|Codeforces Round #302 (Div. 1)|10|\n|<ul><li>- [ ] Done</li></ul>|317|[Berserk Robot ](http://codeforces.com/problemset/problem/538/G)|Codeforces|Codeforces Round #300|10|\n|<ul><li>- [ ] Done</li></ul>|318|[Design Tutorial: Learn from a Game](http://codeforces.com/problemset/problem/472/E)|Codeforces|Codeforces Round #270|10|\n|<ul><li>- [ ] Done</li></ul>|319|[Flow Optimality](http://codeforces.com/problemset/problem/457/E)|Codeforces|MemSQL Start[c]UP 2.0 - Round 2|10|\n|<ul><li>- [ ] Done</li></ul>|320|[Deja Vu](http://codeforces.com/problemset/problem/331/E2)|Codeforces|ABBYY Cup 3.0 - Finals (online version)|10|\n|<ul><li>- [ ] Done</li></ul>|321|[Deja Vu](http://codeforces.com/problemset/problem/331/E1)|Codeforces|ABBYY Cup 3.0 - Finals (online version)|10|\n|<ul><li>- [ ] Done</li></ul>|322|[Princess and Her Shadow](http://codeforces.com/problemset/problem/317/E)|Codeforces|Codeforces Round #188 (Div. 1)|10|\n|<ul><li>- [ ] Done</li></ul>|323|[Suns and Rays](http://codeforces.com/problemset/problem/316/F3)|Codeforces|ABBYY Cup 3.0|10|\n|<ul><li>- [ ] Done</li></ul>|324|[Polygon](http://codeforces.com/problemset/problem/306/D)|Codeforces|Testing Round #6|10|\n|<ul><li>- [ ] Done</li></ul>|325|[HQ](http://codeforces.com/problemset/problem/290/E)|Codeforces|April Fools Day Contest 2013|10|\n|<ul><li>- [ ] Done</li></ul>|326|[Dynamic Programming](p?ID=410)|A2 Online Judge||10|\n|<ul><li>- [ ] Done</li></ul>|327|[Karen and Neighborhood](http://codeforces.com/problemset/problem/815/E)|Codeforces|Codeforces Round #419 (Div. 1)|10|\n|<ul><li>- [ ] Done</li></ul>|328|[Chess Championship](http://codeforces.com/problemset/problem/736/E)|Codeforces|Codeforces Round #382 (Div. 1)|10|\n|<ul><li>- [ ] Done</li></ul>|329|[Finding lines](http://codeforces.com/problemset/problem/788/D)|Codeforces|Codeforces Round #407 (Div. 1)|10|\n|<ul><li>- [ ] Done</li></ul>|330|[Create a Maze](http://codeforces.com/problemset/problem/715/D)|Codeforces|Codeforces Round #372 (Div. 1)|10|\n|<ul><li>- [ ] Done</li></ul>|331|[Perpetual Motion Machine](http://codeforces.com/problemset/problem/830/E)|Codeforces|Codeforces Round #424 (Div. 1, rated, based on VK Cup Finals)|10|\n"
  },
  {
    "path": "categories/015. sortings/README.md",
    "content": "# 015. sortings\n\n\n| Checkbox | ID | Problem Name|Online Judge|Year|Contest|Difficulty Level|\n|:---:|:---:|:---:|:---:|:---:|:---:|:---:|\n|<ul><li>- [ ] Done</li></ul>|1|[Dragons](http://codeforces.com/problemset/problem/230/A)|Codeforces||Codeforces Round #142 (Div. 2)|1|\n|<ul><li>- [ ] Done</li></ul>|2|[Twins](http://codeforces.com/problemset/problem/160/A)|Codeforces||Codeforces Round #111 (Div. 2)|1|\n|<ul><li>- [ ] Done</li></ul>|3|[Business trip](http://codeforces.com/problemset/problem/149/A)|Codeforces||Codeforces Round #106 (Div. 2)|1|\n|<ul><li>- [ ] Done</li></ul>|4|[Amusing Joke](http://codeforces.com/problemset/problem/141/A)|Codeforces||Codeforces Round #101 (Div. 2)|1|\n|<ul><li>- [ ] Done</li></ul>|5|[Towers](http://codeforces.com/problemset/problem/37/A)|Codeforces||Codeforces Beta Round #37|1|\n|<ul><li>- [ ] Done</li></ul>|6|[Sale](http://codeforces.com/problemset/problem/34/B)|Codeforces||Codeforces Beta Round #34 (Div. 2)|1|\n|<ul><li>- [ ] Done</li></ul>|7|[Registration System](http://codeforces.com/problemset/problem/4/C)|Codeforces||Codeforces Beta Round #4 (Div. 2 Only)|1|\n|<ul><li>- [ ] Done</li></ul>|8|[DNA Sorting](https://uva.onlinejudge.org/index.php?option=onlinejudge&page=show_problem&problem=553)|UVA|||1|\n|<ul><li>- [ ] Done</li></ul>|9|[Football (aka Soccer)](https://uva.onlinejudge.org/index.php?option=onlinejudge&page=show_problem&problem=1135)|UVA|||1|\n|<ul><li>- [ ] Done</li></ul>|10|[Contest Scoreboard](https://uva.onlinejudge.org/index.php?option=onlinejudge&page=show_problem&problem=1199)|UVA|||1|\n|<ul><li>- [ ] Done</li></ul>|11|[Defense of a Kingdom](http://www.spoj.com/problems/DEFKIN/)|SPOJ|||1|\n|<ul><li>- [ ] Done</li></ul>|12|[The Great Ball](http://www.spoj.com/problems/BYTESE2/)|SPOJ|||1|\n|<ul><li>- [ ] Done</li></ul>|13|[Translation](http://codeforces.com/problemset/problem/41/A)|Codeforces||Codeforces Beta Round #40 (Div. 2)|1|\n|<ul><li>- [ ] Done</li></ul>|14|[Digit Sorting](http://acm.tju.edu.cn/toj/showp2857.html)|TJU|||1|\n|<ul><li>- [ ] Done</li></ul>|15|[Ananagrams](https://uva.onlinejudge.org/index.php?option=onlinejudge&page=show_problem&problem=92)|UVA|||1|\n|<ul><li>- [ ] Done</li></ul>|16|[Football](http://codeforces.com/problemset/problem/43/A)|Codeforces||Codeforces Beta Round #42 (Div. 2)|1|\n|<ul><li>- [ ] Done</li></ul>|17|[LittleElephantAndBooks](http://community.topcoder.com/stat?c=problem_statement&pm=12112)|TopCoder||SRM 592 - Div2 easy] (15704)|1|\n|<ul><li>- [ ] Done</li></ul>|18|[Cryptography](http://community.topcoder.com/stat?c=problem_statement&pm=10814)|TopCoder||SRM 480 - Div2 easy] (14159)|1|\n|<ul><li>- [ ] Done</li></ul>|19|[RoyalTreasurer](http://community.topcoder.com/stat?c=problem_statement&pm=10007)|TopCoder||SRM 433 - Div2 easy] (13695)|1|\n|<ul><li>- [ ] Done</li></ul>|20|[Division of Nlogonia](https://uva.onlinejudge.org/index.php?option=onlinejudge&page=show_problem&problem=2493)|UVA|||1|\n|<ul><li>- [ ] Done</li></ul>|21|[Julka](http://www.spoj.com/problems/JULKA/)|SPOJ|||1|\n|<ul><li>- [ ] Done</li></ul>|22|[Beautiful Paintings](http://codeforces.com/problemset/problem/651/B)|Codeforces||Codeforces Round #345 (Div. 2)|1|\n|<ul><li>- [ ] Done</li></ul>|23|[USB Flash Drives](http://codeforces.com/problemset/problem/609/A)|Codeforces||Educational Codeforces Round 3|1|\n|<ul><li>- [ ] Done</li></ul>|24|[Queries about less or equal elements](http://codeforces.com/problemset/problem/600/B)|Codeforces||Educational Codeforces Round 2|1|\n|<ul><li>- [ ] Done</li></ul>|25|[Kefa and Company](http://codeforces.com/problemset/problem/580/B)|Codeforces||Codeforces Round #321 (Div. 2)|1|\n|<ul><li>- [ ] Done</li></ul>|26|[Arrays](http://codeforces.com/problemset/problem/572/A)|Codeforces||Codeforces Round #317 [AimFund Thanks-Round] (Div. 2)|1|\n|<ul><li>- [ ] Done</li></ul>|27|[Currency System in Geraldion](http://codeforces.com/problemset/problem/560/A)|Codeforces||Codeforces Round #313 (Div. 2)|1|\n|<ul><li>- [ ] Done</li></ul>|28|[Lala Land and Apple Trees](http://codeforces.com/problemset/problem/558/A)|Codeforces||Codeforces Round #312 (Div. 2)|1|\n|<ul><li>- [ ] Done</li></ul>|29|[GukiZ and Contest](http://codeforces.com/problemset/problem/551/A)|Codeforces||Codeforces Round #307 (Div. 2)|1|\n|<ul><li>- [ ] Done</li></ul>|30|[Soldier and Badges](http://codeforces.com/problemset/problem/546/B)|Codeforces||Codeforces Round #304 (Div. 2)|1|\n|<ul><li>- [ ] Done</li></ul>|31|[Queue](http://codeforces.com/problemset/problem/545/D)|Codeforces||Codeforces Round #303 (Div. 2)|1|\n|<ul><li>- [ ] Done</li></ul>|32|[Drazil and Factorial](http://codeforces.com/problemset/problem/515/C)|Codeforces||Codeforces Round #292 (Div. 2) & Codeforces Round #292 (Div. 1)|1|\n|<ul><li>- [ ] Done</li></ul>|33|[Amr and Music](http://codeforces.com/problemset/problem/507/A)|Codeforces||Codeforces Round #287 (Div. 2)|1|\n|<ul><li>- [ ] Done</li></ul>|34|[Vanya and Lanterns](http://codeforces.com/problemset/problem/492/B)|Codeforces||Codeforces Round #280 (Div. 2)|1|\n|<ul><li>- [ ] Done</li></ul>|35|[Team Olympiad](http://codeforces.com/problemset/problem/490/A)|Codeforces||Codeforces Round #279 (Div. 2)|1|\n|<ul><li>- [ ] Done</li></ul>|36|[BerSU Ball](http://codeforces.com/problemset/problem/489/B)|Codeforces||Codeforces Round #277.5 (Div. 2)|1|\n|<ul><li>- [ ] Done</li></ul>|37|[Exams](http://codeforces.com/problemset/problem/479/C)|Codeforces||Codeforces Round #274 (Div. 2) & Codeforces Round #274 (Div. 1)|1|\n|<ul><li>- [ ] Done</li></ul>|38|[Appleman and Toastman](http://codeforces.com/problemset/problem/461/A)|Codeforces||Codeforces Round #263 (Div. 1) & Codeforces Round #263 (Div. 2)|1|\n|<ul><li>- [ ] Done</li></ul>|39|[Pashmak and Flowers](http://codeforces.com/problemset/problem/459/B)|Codeforces||Codeforces Round #261 (Div. 2)|1|\n|<ul><li>- [ ] Done</li></ul>|40|[Laptops](http://codeforces.com/problemset/problem/456/A)|Codeforces||Codeforces Round #260 (Div. 2)|1|\n|<ul><li>- [ ] Done</li></ul>|41|[Sort the Array](http://codeforces.com/problemset/problem/451/B)|Codeforces||Codeforces Round #258 (Div. 2)|1|\n|<ul><li>- [ ] Done</li></ul>|42|[Devu, the Dumb Guy](http://codeforces.com/problemset/problem/439/B)|Codeforces||Codeforces Round #251 (Div. 2)|1|\n|<ul><li>- [ ] Done</li></ul>|43|[Kuriyama Mirai's Stones](http://codeforces.com/problemset/problem/433/B)|Codeforces||Codeforces Round #248 (Div. 2)|1|\n|<ul><li>- [ ] Done</li></ul>|44|[Choosing Teams](http://codeforces.com/problemset/problem/432/A)|Codeforces||Codeforces Round #246 (Div. 2)|1|\n|<ul><li>- [ ] Done</li></ul>|45|[Gravity Flip](http://codeforces.com/problemset/problem/405/A)|Codeforces||Codeforces Round #238 (Div. 2)|1|\n|<ul><li>- [ ] Done</li></ul>|46|[Helpful Maths](http://codeforces.com/problemset/problem/339/A)|Codeforces||Codeforces Round #197 (Div. 2)|1|\n|<ul><li>- [ ] Done</li></ul>|47|[Building Permutation](http://codeforces.com/problemset/problem/285/C)|Codeforces||Codeforces Round #175 (Div. 2)|1|\n|<ul><li>- [ ] Done</li></ul>|48|[Little Girl and Maximum Sum](http://codeforces.com/problemset/problem/276/C)|Codeforces||Codeforces Round #169 (Div. 2)|1|\n|<ul><li>- [ ] Done</li></ul>|49|[Alyona and Mex](http://codeforces.com/problemset/problem/682/B)|Codeforces||Codeforces Round #358 (Div. 2)|1|\n|<ul><li>- [ ] Done</li></ul>|50|[Vito's Family](https://uva.onlinejudge.org/index.php?option=onlinejudge&page=show_problem&problem=982)|UVA|||1|\n|<ul><li>- [ ] Done</li></ul>|51|[An abandoned sentiment from past](http://codeforces.com/problemset/problem/814/A)|Codeforces||Codeforces Round #418 (Div. 2)|1|\n|<ul><li>- [ ] Done</li></ul>|52|[Mahmoud and a Triangle](http://codeforces.com/problemset/problem/766/B)|Codeforces||Codeforces Round #396 (Div. 2)|1|\n|<ul><li>- [ ] Done</li></ul>|53|[Anton and Classes](http://codeforces.com/problemset/problem/785/B)|Codeforces||Codeforces Round #404 (Div. 2)|1|\n|<ul><li>- [ ] Done</li></ul>|54|[Passwords](http://codeforces.com/problemset/problem/721/B)|Codeforces||Codeforces Round #374 (Div. 2)|1|\n|<ul><li>- [ ] Done</li></ul>|55|[Lucky Division](http://codeforces.com/problemset/problem/122/A)|Codeforces||Codeforces Beta Round #91 (Div. 2 Only)|1|\n|<ul><li>- [ ] Done</li></ul>|56|[Chat room](http://codeforces.com/problemset/problem/58/A)|Codeforces||Codeforces Beta Round #54 (Div. 2)|1|\n|<ul><li>- [ ] Done</li></ul>|57|[Big Segment](http://codeforces.com/problemset/problem/242/B)|Codeforces||Codeforces Round #149 (Div. 2)|2|\n|<ul><li>- [ ] Done</li></ul>|58|[Little Elephant and Problem](http://codeforces.com/problemset/problem/220/A)|Codeforces||Codeforces Round #136 (Div. 1) & Codeforces Round #136 (Div. 2)|2|\n|<ul><li>- [ ] Done</li></ul>|59|[Rank List](http://codeforces.com/problemset/problem/166/A)|Codeforces||Codeforces Round #113 (Div. 2)|2|\n|<ul><li>- [ ] Done</li></ul>|60|[Unlucky Ticket](http://codeforces.com/problemset/problem/160/B)|Codeforces||Codeforces Round #111 (Div. 2)|2|\n|<ul><li>- [ ] Done</li></ul>|61|[Trace](http://codeforces.com/problemset/problem/157/B)|Codeforces||Codeforces Round #110 (Div. 2)|2|\n|<ul><li>- [ ] Done</li></ul>|62|[Combination](http://codeforces.com/problemset/problem/155/B)|Codeforces||Codeforces Round #109 (Div. 2)|2|\n|<ul><li>- [ ] Done</li></ul>|63|[Sinking Ship](http://codeforces.com/problemset/problem/63/A)|Codeforces||Codeforces Beta Round #59 (Div. 2)|2|\n|<ul><li>- [ ] Done</li></ul>|64|[Next Test](http://codeforces.com/problemset/problem/27/A)|Codeforces||Codeforces Beta Round #27 (Codeforces format, Div. 2)|2|\n|<ul><li>- [ ] Done</li></ul>|65|[Bubbles and Buckets](https://uva.onlinejudge.org/index.php?option=onlinejudge&page=show_problem&problem=2490)|UVA|||2|\n|<ul><li>- [ ] Done</li></ul>|66|[Ljutnja](http://www.spoj.com/problems/C1LJUTNJ/)|SPOJ|||2|\n|<ul><li>- [ ] Done</li></ul>|67|[Ascending Fibonacci Numbers](http://www.spoj.com/problems/ASCDFIB/)|SPOJ|||2|\n|<ul><li>- [ ] Done</li></ul>|68|[Handball](https://uva.onlinejudge.org/index.php?option=onlinejudge&page=show_problem&problem=4663)|UVA|||2|\n|<ul><li>- [ ] Done</li></ul>|69|[k-Multiple Free Set](http://codeforces.com/problemset/problem/274/A)|Codeforces||Codeforces Round #168 (Div. 1) & Codeforces Round #168 (Div. 2)|2|\n|<ul><li>- [ ] Done</li></ul>|70|[Qualifying Contest](http://codeforces.com/problemset/problem/659/B)|Codeforces||Codeforces Round #346 (Div. 2)|2|\n|<ul><li>- [ ] Done</li></ul>|71|[Bear and Three Balls](http://codeforces.com/problemset/problem/653/A)|Codeforces||IndiaHacks 2016 - Online Edition (Div. 1 + Div. 2)|2|\n|<ul><li>- [ ] Done</li></ul>|72|[Chat Order](http://codeforces.com/problemset/problem/637/B)|Codeforces||VK Cup 2016 - Qualification Round 1|2|\n|<ul><li>- [ ] Done</li></ul>|73|[Making a String](http://codeforces.com/problemset/problem/624/B)|Codeforces||AIM Tech Round (Div. 2)|2|\n|<ul><li>- [ ] Done</li></ul>|74|[Developing Skills](http://codeforces.com/problemset/problem/581/C)|Codeforces||Codeforces Round #322 (Div. 2)|2|\n|<ul><li>- [ ] Done</li></ul>|75|[Equivalent Strings](http://codeforces.com/problemset/problem/559/B)|Codeforces||Codeforces Round #313 (Div. 1) & Codeforces Round #313 (Div. 2)|2|\n|<ul><li>- [ ] Done</li></ul>|76|[Pasha and Tea](http://codeforces.com/problemset/problem/557/B)|Codeforces||Codeforces Round #311 (Div. 2)|2|\n|<ul><li>- [ ] Done</li></ul>|77|[Fox And Names](http://codeforces.com/problemset/problem/510/C)|Codeforces||Codeforces Round #290 (Div. 2) & Codeforces Round #290 (Div. 1)|2|\n|<ul><li>- [ ] Done</li></ul>|78|[New Year Permutation](http://codeforces.com/problemset/problem/500/B)|Codeforces||Good Bye 2014|2|\n|<ul><li>- [ ] Done</li></ul>|79|[Vanya and Exams](http://codeforces.com/problemset/problem/492/C)|Codeforces||Codeforces Round #280 (Div. 2)|2|\n|<ul><li>- [ ] Done</li></ul>|80|[SwapSort](http://codeforces.com/problemset/problem/489/A)|Codeforces||Codeforces Round #277.5 (Div. 2)|2|\n|<ul><li>- [ ] Done</li></ul>|81|[Towers](http://codeforces.com/problemset/problem/479/B)|Codeforces||Codeforces Round #274 (Div. 2)|2|\n|<ul><li>- [ ] Done</li></ul>|82|[MUH and Important Things](http://codeforces.com/problemset/problem/471/B)|Codeforces||Codeforces Round #269 (Div. 2)|2|\n|<ul><li>- [ ] Done</li></ul>|83|[The Child and Toy](http://codeforces.com/problemset/problem/437/C)|Codeforces||Codeforces Round #250 (Div. 2) & Codeforces Round #250 (Div. 1)|2|\n|<ul><li>- [ ] Done</li></ul>|84|[Fox and Box Accumulation](http://codeforces.com/problemset/problem/388/A)|Codeforces||Codeforces Round #228 (Div. 1) & Codeforces Round #228 (Div. 2)|2|\n|<ul><li>- [ ] Done</li></ul>|85|[New Year Ratings Change](http://codeforces.com/problemset/problem/379/C)|Codeforces||Good Bye 2013|2|\n|<ul><li>- [ ] Done</li></ul>|86|[Counting Kangaroos is Fun](http://codeforces.com/problemset/problem/372/A)|Codeforces||Codeforces Round #219 (Div. 1) & Codeforces Round #219 (Div. 2)|2|\n|<ul><li>- [ ] Done</li></ul>|87|[Petya and Staircases](http://codeforces.com/problemset/problem/362/B)|Codeforces||Codeforces Round #212 (Div. 2)|2|\n|<ul><li>- [ ] Done</li></ul>|88|[Jeff and Periods](http://codeforces.com/problemset/problem/352/B)|Codeforces||Codeforces Round #204 (Div. 2)|2|\n|<ul><li>- [ ] Done</li></ul>|89|[Mafia](http://codeforces.com/problemset/problem/348/A)|Codeforces||Codeforces Round #202 (Div. 1) & Codeforces Round #202 (Div. 2)|2|\n|<ul><li>- [ ] Done</li></ul>|90|[Difference Row](http://codeforces.com/problemset/problem/347/A)|Codeforces||Codeforces Round #201 (Div. 2)|2|\n|<ul><li>- [ ] Done</li></ul>|91|[Polo the Penguin and Matrix](http://codeforces.com/problemset/problem/289/B)|Codeforces||Codeforces Round #177 (Div. 2)|2|\n|<ul><li>- [ ] Done</li></ul>|92|[Squares](http://codeforces.com/problemset/problem/263/B)|Codeforces||Codeforces Round #161 (Div. 2)|2|\n|<ul><li>- [ ] Done</li></ul>|93|[Buggy Sorting](http://codeforces.com/problemset/problem/246/A)|Codeforces||Codeforces Round #151 (Div. 2)|2|\n|<ul><li>- [ ] Done</li></ul>|94|[Little Robber Girl's Zoo](http://codeforces.com/problemset/problem/686/B)|Codeforces||Codeforces Round #359 (Div. 2)|2|\n|<ul><li>- [ ] Done</li></ul>|95|[Counting heaps](https://icpcarchive.ecs.baylor.edu/index.php?option=onlinejudge&page=show_problem&problem=2391)|Live Archive|2008|Europe - Central|2|\n|<ul><li>- [ ] Done</li></ul>|96|[Restoring Password](http://codeforces.com/problemset/problem/94/A)|Codeforces||Codeforces Beta Round #76 (Div. 2 Only)|2|\n|<ul><li>- [ ] Done</li></ul>|97|[Leha and Function](http://codeforces.com/problemset/problem/840/A)|Codeforces||Codeforces Round #429 (Div. 1) & Codeforces Round #429 (Div. 2)|2|\n|<ul><li>- [ ] Done</li></ul>|98|[Urbanization](http://codeforces.com/problemset/problem/735/B)|Codeforces||Codeforces Round #382 (Div. 2)|2|\n|<ul><li>- [ ] Done</li></ul>|99|[Game of Credit Cards](http://codeforces.com/problemset/problem/777/B)|Codeforces||Codeforces Round #401 (Div. 2)|2|\n|<ul><li>- [ ] Done</li></ul>|100|[Summer sell-off](http://codeforces.com/problemset/problem/810/B)|Codeforces||Codeforces Round #415 (Div. 2)|2|\n|<ul><li>- [ ] Done</li></ul>|101|[Vladik and Complicated Book](http://codeforces.com/problemset/problem/811/B)|Codeforces||Codeforces Round #416 (Div. 2)|2|\n|<ul><li>- [ ] Done</li></ul>|102|[Cards with Numbers](http://codeforces.com/problemset/problem/254/A)|Codeforces||Codeforces Round #155 (Div. 2)|3|\n|<ul><li>- [ ] Done</li></ul>|103|[Reading](http://codeforces.com/problemset/problem/234/B)|Codeforces||Codeforces Round #145 (Div. 2, ACM-ICPC Rules)|3|\n|<ul><li>- [ ] Done</li></ul>|104|[To Add or Not to Add](http://codeforces.com/problemset/problem/231/C)|Codeforces||Codeforces Round #143 (Div. 2)|3|\n|<ul><li>- [ ] Done</li></ul>|105|[Photographer](http://codeforces.com/problemset/problem/203/C)|Codeforces||Codeforces Round #128 (Div. 2)|3|\n|<ul><li>- [ ] Done</li></ul>|106|[Median](http://codeforces.com/problemset/problem/166/C)|Codeforces||Codeforces Round #113 (Div. 2)|3|\n|<ul><li>- [ ] Done</li></ul>|107|[History](http://codeforces.com/problemset/problem/137/C)|Codeforces||Codeforces Beta Round #98 (Div. 2)|3|\n|<ul><li>- [ ] Done</li></ul>|108|[Replacement](http://codeforces.com/problemset/problem/135/A)|Codeforces||Codeforces Beta Round #97 (Div. 1) & Codeforces Beta Round #97 (Div. 2)|3|\n|<ul><li>- [ ] Done</li></ul>|109|[Powerful array](http://codeforces.com/problemset/problem/86/D)|Codeforces||Yandex.Algorithm 2011 Round 2|3|\n|<ul><li>- [ ] Done</li></ul>|110|[Burglar and Matches](http://codeforces.com/problemset/problem/16/B)|Codeforces||Codeforces Beta Round #16 (Div. 2 Only)|3|\n|<ul><li>- [ ] Done</li></ul>|111|[Correct Solution?](http://codeforces.com/problemset/problem/12/B)|Codeforces||Codeforces Beta Round #12 (Div 2 Only)|3|\n|<ul><li>- [ ] Done</li></ul>|112|[Mysterious Present](http://codeforces.com/problemset/problem/4/D)|Codeforces||Codeforces Beta Round #4 (Div. 2 Only)|3|\n|<ul><li>- [ ] Done</li></ul>|113|[2D-SORT](http://www.spoj.com/problems/SORT2D/)|SPOJ|||3|\n|<ul><li>- [ ] Done</li></ul>|114|[HELP NERUBAN](http://www.spoj.com/problems/DOTAA2/)|SPOJ|||3|\n|<ul><li>- [ ] Done</li></ul>|115|[z-sort](http://codeforces.com/problemset/problem/652/B)|Codeforces||Educational Codeforces Round 10|3|\n|<ul><li>- [ ] Done</li></ul>|116|[Day at the Beach](http://codeforces.com/problemset/problem/599/C)|Codeforces||Codeforces Round #332 (Div. 2)|3|\n|<ul><li>- [ ] Done</li></ul>|117|[Anton and Lines](http://codeforces.com/problemset/problem/593/B)|Codeforces||Codeforces Round #329 (Div. 2)|3|\n|<ul><li>- [ ] Done</li></ul>|118|[Finding Team Member](http://codeforces.com/problemset/problem/579/B)|Codeforces||Codeforces Round #320 (Div. 2) [Bayan Thanks-Round]|3|\n|<ul><li>- [ ] Done</li></ul>|119|[Order Book](http://codeforces.com/problemset/problem/572/B)|Codeforces||Codeforces Round #317 [AimFund Thanks-Round] (Div. 2)|3|\n|<ul><li>- [ ] Done</li></ul>|120|[Ilya and Sticks](http://codeforces.com/problemset/problem/525/C)|Codeforces||Codeforces Round #297 (Div. 2)|3|\n|<ul><li>- [ ] Done</li></ul>|121|[Misha and Forest](http://codeforces.com/problemset/problem/501/C)|Codeforces||Codeforces Round #285 (Div. 2) & Codeforces Round #285 (Div. 1)|3|\n|<ul><li>- [ ] Done</li></ul>|122|[Vasya and Basketball](http://codeforces.com/problemset/problem/493/C)|Codeforces||Codeforces Round #281 (Div. 2)|3|\n|<ul><li>- [ ] Done</li></ul>|123|[Maximum Value](http://codeforces.com/problemset/problem/484/B)|Codeforces||Codeforces Round #276 (Div. 1) & Codeforces Round #276 (Div. 2)|3|\n|<ul><li>- [ ] Done</li></ul>|124|[Pashmak and Parmida's problem](http://codeforces.com/problemset/problem/459/D)|Codeforces||Codeforces Round #261 (Div. 2)|3|\n|<ul><li>- [ ] Done</li></ul>|125|[The Child and Set](http://codeforces.com/problemset/problem/437/B)|Codeforces||Codeforces Round #250 (Div. 2)|3|\n|<ul><li>- [ ] Done</li></ul>|126|[Megacity](http://codeforces.com/problemset/problem/424/B)|Codeforces||Codeforces Round #242 (Div. 2)|3|\n|<ul><li>- [ ] Done</li></ul>|127|[Arithmetic Progression](http://codeforces.com/problemset/problem/382/C)|Codeforces||Codeforces Round #224 (Div. 2)|3|\n|<ul><li>- [ ] Done</li></ul>|128|[Sereja and Stairs](http://codeforces.com/problemset/problem/381/B)|Codeforces||Codeforces Round #223 (Div. 2)|3|\n|<ul><li>- [ ] Done</li></ul>|129|[Bombs](http://codeforces.com/problemset/problem/350/C)|Codeforces||Codeforces Round #203 (Div. 2)|3|\n|<ul><li>- [ ] Done</li></ul>|130|[Ilya and Matrix](http://codeforces.com/problemset/problem/313/C)|Codeforces||Codeforces Round #186 (Div. 2)|3|\n|<ul><li>- [ ] Done</li></ul>|131|[Spyke Talks](http://codeforces.com/problemset/problem/291/A)|Codeforces||Croc Champ 2013 - Qualification Round|3|\n|<ul><li>- [ ] Done</li></ul>|132|[Maxim and Discounts](http://codeforces.com/problemset/problem/261/A)|Codeforces||Codeforces Round #160 (Div. 1) & Codeforces Round #160 (Div. 2)|3|\n|<ul><li>- [ ] Done</li></ul>|133|[Sockets](http://codeforces.com/problemset/problem/257/A)|Codeforces||Codeforces Round #159 (Div. 2)|3|\n|<ul><li>- [ ] Done</li></ul>|134|[Longest Regular Bracket Sequence](http://codeforces.com/problemset/problem/5/C)|Codeforces||Codeforces Beta Round #5|3|\n|<ul><li>- [ ] Done</li></ul>|135|[Long Jumps](http://codeforces.com/problemset/problem/479/D)|Codeforces||Codeforces Round #274 (Div. 2) & Codeforces Round #274 (Div. 1)|3|\n|<ul><li>- [ ] Done</li></ul>|136|[Cellular Network](http://codeforces.com/problemset/problem/702/C)|Codeforces||Educational Codeforces Round 15|3|\n|<ul><li>- [ ] Done</li></ul>|137|[Do you want a date?](http://codeforces.com/problemset/problem/809/A)|Codeforces||Codeforces Round #415 (Div. 1) & Codeforces Round #415 (Div. 2)|3|\n|<ul><li>- [ ] Done</li></ul>|138|[Mashmokh and Tokens](http://codeforces.com/problemset/problem/415/B)|Codeforces||Codeforces Round #240 (Div. 2)|3|\n|<ul><li>- [ ] Done</li></ul>|139|[Growing Mushrooms](http://codeforces.com/problemset/problem/186/B)|Codeforces||Codeforces Round #118 (Div. 2)|4|\n|<ul><li>- [ ] Done</li></ul>|140|[Chores](http://codeforces.com/problemset/problem/169/A)|Codeforces||VK Cup 2012 Round 2 (Unofficial Div. 2 Edition)|4|\n|<ul><li>- [ ] Done</li></ul>|141|[Find Pair](http://codeforces.com/problemset/problem/160/C)|Codeforces||Codeforces Round #111 (Div. 2)|4|\n|<ul><li>- [ ] Done</li></ul>|142|[Matchmaker](http://codeforces.com/problemset/problem/159/B)|Codeforces||VK Cup 2012 Qualification Round 2|4|\n|<ul><li>- [ ] Done</li></ul>|143|[Division into Teams](http://codeforces.com/problemset/problem/149/C)|Codeforces||Codeforces Round #106 (Div. 2)|4|\n|<ul><li>- [ ] Done</li></ul>|144|[Queue](http://codeforces.com/problemset/problem/91/B)|Codeforces||Codeforces Beta Round #75 (Div. 1 Only) & Codeforces Beta Round #75 (Div. 2 Only)|4|\n|<ul><li>- [ ] Done</li></ul>|145|[Page Numbers](http://codeforces.com/problemset/problem/34/C)|Codeforces||Codeforces Beta Round #34 (Div. 2)|4|\n|<ul><li>- [ ] Done</li></ul>|146|[Fruits](http://codeforces.com/problemset/problem/12/C)|Codeforces||Codeforces Beta Round #12 (Div 2 Only)|4|\n|<ul><li>- [ ] Done</li></ul>|147|[Troops of Sand Monsters](http://www.spoj.com/problems/TROOPS/)|SPOJ|||4|\n|<ul><li>- [ ] Done</li></ul>|148|[The Smallest String Concatenation](http://codeforces.com/problemset/problem/632/C)|Codeforces||Educational Codeforces Round 9|4|\n|<ul><li>- [ ] Done</li></ul>|149|[Report](http://codeforces.com/problemset/problem/631/C)|Codeforces||Codeforces Round #344 (Div. 2)|4|\n|<ul><li>- [ ] Done</li></ul>|150|[One-Dimensional Battle Ships](http://codeforces.com/problemset/problem/567/D)|Codeforces||Codeforces Round #Pi (Div. 2)|4|\n|<ul><li>- [ ] Done</li></ul>|151|[Case of Fugitive](http://codeforces.com/problemset/problem/555/B)|Codeforces||Codeforces Round #310 (Div. 1) & Codeforces Round #310 (Div. 2)|4|\n|<ul><li>- [ ] Done</li></ul>|152|[Vanya and Triangles](http://codeforces.com/problemset/problem/552/D)|Codeforces||Codeforces Round #308 (Div. 2)|4|\n|<ul><li>- [ ] Done</li></ul>|153|[Clique Problem](http://codeforces.com/problemset/problem/527/D)|Codeforces||Codeforces Round #296 (Div. 2) & Codeforces Round #296 (Div. 1)|4|\n|<ul><li>- [ ] Done</li></ul>|154|[Vanya and Computer Game](http://codeforces.com/problemset/problem/492/D)|Codeforces||Codeforces Round #280 (Div. 2)|4|\n|<ul><li>- [ ] Done</li></ul>|155|[Pashmak and Graph](http://codeforces.com/problemset/problem/459/E)|Codeforces||Codeforces Round #261 (Div. 2)|4|\n|<ul><li>- [ ] Done</li></ul>|156|[Devu and his Brother](http://codeforces.com/problemset/problem/439/D)|Codeforces||Codeforces Round #251 (Div. 2)|4|\n|<ul><li>- [ ] Done</li></ul>|157|[The Child and Zoo](http://codeforces.com/problemset/problem/437/D)|Codeforces||Codeforces Round #250 (Div. 2) & Codeforces Round #250 (Div. 1)|4|\n|<ul><li>- [ ] Done</li></ul>|158|[Sereja and Swaps](http://codeforces.com/problemset/problem/425/A)|Codeforces||Codeforces Round #243 (Div. 1) & Codeforces Round #243 (Div. 2)|4|\n|<ul><li>- [ ] Done</li></ul>|159|[Network Configuration](http://codeforces.com/problemset/problem/412/B)|Codeforces||Coder-Strike 2014 - Round 1|4|\n|<ul><li>- [ ] Done</li></ul>|160|[Restore Graph](http://codeforces.com/problemset/problem/404/C)|Codeforces||Codeforces Round #237 (Div. 2)|4|\n|<ul><li>- [ ] Done</li></ul>|161|[Multitasking](http://codeforces.com/problemset/problem/384/B)|Codeforces||Codeforces Round #225 (Div. 2)|4|\n|<ul><li>- [ ] Done</li></ul>|162|[Semifinals](http://codeforces.com/problemset/problem/378/B)|Codeforces||Codeforces Round #222 (Div. 2)|4|\n|<ul><li>- [ ] Done</li></ul>|163|[Maximum Submatrix 2](http://codeforces.com/problemset/problem/375/B)|Codeforces||Codeforces Round #221 (Div. 1) & Codeforces Round #221 (Div. 2)|4|\n|<ul><li>- [ ] Done</li></ul>|164|[Eight Point Sets](http://codeforces.com/problemset/problem/334/B)|Codeforces||Codeforces Round #194 (Div. 2)|4|\n|<ul><li>- [ ] Done</li></ul>|165|[Ksusha and Array](http://codeforces.com/problemset/problem/299/A)|Codeforces||Croc Champ 2013 - Round 2 (Div. 2 Edition)|4|\n|<ul><li>- [ ] Done</li></ul>|166|[Lorry](http://codeforces.com/problemset/problem/3/B)|Codeforces||Codeforces Beta Round #3|4|\n|<ul><li>- [ ] Done</li></ul>|167|[Money Transfers](http://codeforces.com/problemset/problem/675/C)|Codeforces||Codeforces Round #353 (Div. 2)|4|\n|<ul><li>- [ ] Done</li></ul>|168|[Choosing Laptop](http://codeforces.com/problemset/problem/106/B)|Codeforces||Codeforces Beta Round #82 (Div. 2)|4|\n|<ul><li>- [ ] Done</li></ul>|169|[Office Keys](http://codeforces.com/problemset/problem/830/A)|Codeforces||Codeforces Round #424 (Div. 1, rated, based on VK Cup Finals) & Codeforces Round #424 (Div. 2, rated, based on VK Cup Finals)|4|\n|<ul><li>- [ ] Done</li></ul>|170|[XK Segments](http://codeforces.com/problemset/problem/895/B)|Codeforces||Codeforces Round #448 (Div. 2)|4|\n|<ul><li>- [ ] Done</li></ul>|171|[Young Table](http://codeforces.com/problemset/problem/237/B)|Codeforces||Codeforces Round #147 (Div. 2)|5|\n|<ul><li>- [ ] Done</li></ul>|172|[Olympiad](http://codeforces.com/problemset/problem/222/D)|Codeforces||Codeforces Round #137 (Div. 2)|5|\n|<ul><li>- [ ] Done</li></ul>|173|[Discounts](http://codeforces.com/problemset/problem/161/B)|Codeforces||VK Cup 2012 Round 1|5|\n|<ul><li>- [ ] Done</li></ul>|174|[Queue](http://codeforces.com/problemset/problem/141/C)|Codeforces||Codeforces Round #101 (Div. 2)|5|\n|<ul><li>- [ ] Done</li></ul>|175|[New Year Contest](http://codeforces.com/problemset/problem/140/D)|Codeforces||Codeforces Round #100|5|\n|<ul><li>- [ ] Done</li></ul>|176|[Fancy Number](http://codeforces.com/problemset/problem/118/C)|Codeforces||Codeforces Beta Round #89 (Div. 2)|5|\n|<ul><li>- [ ] Done</li></ul>|177|[Lawnmower](http://codeforces.com/problemset/problem/115/B)|Codeforces||Codeforces Beta Round #87 (Div. 1 Only) & Codeforces Beta Round #87 (Div. 2 Only)|5|\n|<ul><li>- [ ] Done</li></ul>|178|[Datatypes](http://codeforces.com/problemset/problem/108/B)|Codeforces||Codeforces Beta Round #83 (Div. 2 Only)|5|\n|<ul><li>- [ ] Done</li></ul>|179|[Help Chef Gerasim](http://codeforces.com/problemset/problem/99/B)|Codeforces||Codeforces Beta Round #78 (Div. 2 Only)|5|\n|<ul><li>- [ ] Done</li></ul>|180|[Colorful Field](http://codeforces.com/problemset/problem/79/B)|Codeforces||Codeforces Beta Round #71|5|\n|<ul><li>- [ ] Done</li></ul>|181|[Cottage Village](http://codeforces.com/problemset/problem/15/A)|Codeforces||Codeforces Beta Round #15|5|\n|<ul><li>- [ ] Done</li></ul>|182|[Sequence](http://codeforces.com/problemset/problem/13/C)|Codeforces||Codeforces Beta Round #13|5|\n|<ul><li>- [ ] Done</li></ul>|183|[DIFFICULT INTERVIEW](http://www.spoj.com/problems/DIFFICUL/)|SPOJ|||5|\n|<ul><li>- [ ] Done</li></ul>|184|[Nested Segments](http://codeforces.com/problemset/problem/652/D)|Codeforces||Educational Codeforces Round 10|5|\n|<ul><li>- [ ] Done</li></ul>|185|[Spy Syndrome 2](http://codeforces.com/problemset/problem/633/C)|Codeforces||Manthan, Codefest 16|5|\n|<ul><li>- [ ] Done</li></ul>|186|[The Union of k-Segments](http://codeforces.com/problemset/problem/612/D)|Codeforces||Educational Codeforces Round 4|5|\n|<ul><li>- [ ] Done</li></ul>|187|[Nearest vectors](http://codeforces.com/problemset/problem/598/C)|Codeforces||Educational Codeforces Round 1|5|\n|<ul><li>- [ ] Done</li></ul>|188|[Restaurant](http://codeforces.com/problemset/problem/597/B)|Codeforces||Testing Round #12|5|\n|<ul><li>- [ ] Done</li></ul>|189|[Wilbur and Points](http://codeforces.com/problemset/problem/596/C)|Codeforces||Codeforces Round #331 (Div. 2)|5|\n|<ul><li>- [ ] Done</li></ul>|190|[Layer Cake](http://codeforces.com/problemset/problem/589/B)|Codeforces||2015-2016 ACM-ICPC, NEERC, Southern Subregional Contest (Online Mirror, ACM-ICPC Rules, Teams Preferred)|5|\n|<ul><li>- [ ] Done</li></ul>|191|[Points on Plane](http://codeforces.com/problemset/problem/576/C)|Codeforces||Codeforces Round #319 (Div. 1) & Codeforces Round #319 (Div. 2)|5|\n|<ul><li>- [ ] Done</li></ul>|192|[Minimization](http://codeforces.com/problemset/problem/571/B)|Codeforces||Codeforces Round #317 [AimFund Thanks-Round] (Div. 1) & Codeforces Round #317 [AimFund Thanks-Round] (Div. 2)|5|\n|<ul><li>- [ ] Done</li></ul>|193|[A Simple Task](http://codeforces.com/problemset/problem/558/E)|Codeforces||Codeforces Round #312 (Div. 2)|5|\n|<ul><li>- [ ] Done</li></ul>|194|[Happy Line](http://codeforces.com/problemset/problem/549/G)|Codeforces||Looksery Cup 2015|5|\n|<ul><li>- [ ] Done</li></ul>|195|[The Art of Dealing with ATM](http://codeforces.com/problemset/problem/524/C)|Codeforces||VK Cup 2015 - Round 1|5|\n|<ul><li>- [ ] Done</li></ul>|196|[Pillars](http://codeforces.com/problemset/problem/474/E)|Codeforces||Codeforces Round #271 (Div. 2)|5|\n|<ul><li>- [ ] Done</li></ul>|197|[Ryouko's Memory Note](http://codeforces.com/problemset/problem/433/C)|Codeforces||Codeforces Round #248 (Div. 2) & Codeforces Round #248 (Div. 1)|5|\n|<ul><li>- [ ] Done</li></ul>|198|[Prime Swaps](http://codeforces.com/problemset/problem/432/C)|Codeforces||Codeforces Round #246 (Div. 2)|5|\n|<ul><li>- [ ] Done</li></ul>|199|[Points and Segments (easy)](http://codeforces.com/problemset/problem/430/A)|Codeforces||Codeforces Round #245 (Div. 2)|5|\n|<ul><li>- [ ] Done</li></ul>|200|[Fox and Card Game](http://codeforces.com/problemset/problem/388/C)|Codeforces||Codeforces Round #228 (Div. 1) & Codeforces Round #228 (Div. 2)|5|\n|<ul><li>- [ ] Done</li></ul>|201|[Preparing for the Contest](http://codeforces.com/problemset/problem/377/B)|Codeforces||Codeforces Round #222 (Div. 1) & Codeforces Round #222 (Div. 2)|5|\n|<ul><li>- [ ] Done</li></ul>|202|[Two Heaps](http://codeforces.com/problemset/problem/353/B)|Codeforces||Codeforces Round #205 (Div. 2)|5|\n|<ul><li>- [ ] Done</li></ul>|203|[Dima and Two Sequences](http://codeforces.com/problemset/problem/272/D)|Codeforces||Codeforces Round #167 (Div. 2) & Codeforces Round #167 (Div. 1)|5|\n|<ul><li>- [ ] Done</li></ul>|204|[Array Game](https://icpcarchive.ecs.baylor.edu/index.php?option=onlinejudge&page=show_problem&problem=2654)|Live Archive|2009|Asia - Tehran|5|\n|<ul><li>- [ ] Done</li></ul>|205|[Cards Sorting](http://codeforces.com/problemset/problem/830/B)|Codeforces||Codeforces Round #424 (Div. 1, rated, based on VK Cup Finals) & Codeforces Round #424 (Div. 2, rated, based on VK Cup Finals)|5|\n|<ul><li>- [ ] Done</li></ul>|206|[Jury Meeting](http://codeforces.com/problemset/problem/853/B)|Codeforces||Codeforces Round #433 (Div. 1, based on Olympiad of Metropolises) & Codeforces Round #433 (Div. 2, based on Olympiad of Metropolises)|5|\n|<ul><li>- [ ] Done</li></ul>|207|[Hanoi Factory](http://codeforces.com/problemset/problem/777/E)|Codeforces||Codeforces Round #401 (Div. 2)|5|\n|<ul><li>- [ ] Done</li></ul>|208|[Cartons of milk](http://codeforces.com/problemset/problem/767/D)|Codeforces||Codeforces Round #398 (Div. 2)|5|\n|<ul><li>- [ ] Done</li></ul>|209|[Fedor and coupons](http://codeforces.com/problemset/problem/754/D)|Codeforces||Codeforces Round #390 (Div. 2)|5|\n|<ul><li>- [ ] Done</li></ul>|210|[pSort](http://codeforces.com/problemset/problem/28/B)|Codeforces||Codeforces Beta Round #28 (Codeforces format)|5|\n|<ul><li>- [ ] Done</li></ul>|211|[Hydra](http://codeforces.com/problemset/problem/243/B)|Codeforces||Codeforces Round #150 (Div. 1) & Codeforces Round #150 (Div. 2)|6|\n|<ul><li>- [ ] Done</li></ul>|212|[Reducing Fractions](http://codeforces.com/problemset/problem/222/C)|Codeforces||Codeforces Round #137 (Div. 2)|6|\n|<ul><li>- [ ] Done</li></ul>|213|[Trading Business](http://codeforces.com/problemset/problem/176/A)|Codeforces||Croc Champ 2012 - Round 2|6|\n|<ul><li>- [ ] Done</li></ul>|214|[Bus](http://codeforces.com/problemset/problem/172/C)|Codeforces||Croc Champ 2012 - Qualification Round|6|\n|<ul><li>- [ ] Done</li></ul>|215|[Polygons](http://codeforces.com/problemset/problem/166/B)|Codeforces||Codeforces Round #113 (Div. 2)|6|\n|<ul><li>- [ ] Done</li></ul>|216|[Phone Talks](http://codeforces.com/problemset/problem/158/E)|Codeforces||VK Cup 2012 Qualification Round 1|6|\n|<ul><li>- [ ] Done</li></ul>|217|[Double Profiles](http://codeforces.com/problemset/problem/154/C)|Codeforces||Codeforces Round #109 (Div. 1) & Codeforces Round #109 (Div. 2)|6|\n|<ul><li>- [ ] Done</li></ul>|218|[Yet Another Task with Queens](http://codeforces.com/problemset/problem/131/E)|Codeforces||Codeforces Beta Round #95 (Div. 2)|6|\n|<ul><li>- [ ] Done</li></ul>|219|[Time to Raid Cowavans](http://codeforces.com/problemset/problem/103/D)|Codeforces||Codeforces Beta Round #80 (Div. 1 Only) & Codeforces Beta Round #80 (Div. 2 Only)|6|\n|<ul><li>- [ ] Done</li></ul>|220|[Doctor](http://codeforces.com/problemset/problem/83/B)|Codeforces||Codeforces Beta Round #72 (Div. 1 Only) & Codeforces Beta Round #72 (Div. 2 Only)|6|\n|<ul><li>- [ ] Done</li></ul>|221|[Average Score](http://codeforces.com/problemset/problem/81/C)|Codeforces||Yandex.Algorithm Open 2011 Qualification 1|6|\n|<ul><li>- [ ] Done</li></ul>|222|[Physical Education](http://codeforces.com/problemset/problem/53/D)|Codeforces||Codeforces Beta Round #49 (Div. 2)|6|\n|<ul><li>- [ ] Done</li></ul>|223|[Let's Go Rolling!](http://codeforces.com/problemset/problem/38/E)|Codeforces||School Personal Contest #1 (Winter Computer School 2010/11) - Codeforces Beta Round #38 (ACM-ICPC Rules)|6|\n|<ul><li>- [ ] Done</li></ul>|224|[Segments](http://codeforces.com/problemset/problem/22/D)|Codeforces||Codeforces Beta Round #22 (Div. 2 Only)|6|\n|<ul><li>- [ ] Done</li></ul>|225|[Stripe 2](http://codeforces.com/problemset/problem/21/C)|Codeforces||Codeforces Alpha Round #21 (Codeforces format)|6|\n|<ul><li>- [ ] Done</li></ul>|226|[Polycarp and Hay](http://codeforces.com/problemset/problem/659/F)|Codeforces||Codeforces Round #346 (Div. 2)|6|\n|<ul><li>- [ ] Done</li></ul>|227|[Infinite Inversions](http://codeforces.com/problemset/problem/540/E)|Codeforces||Codeforces Round #301 (Div. 2)|6|\n|<ul><li>- [ ] Done</li></ul>|228|[A Heap of Heaps](http://codeforces.com/problemset/problem/538/F)|Codeforces||Codeforces Round #300|6|\n|<ul><li>- [ ] Done</li></ul>|229|[Distributing Parts ](http://codeforces.com/problemset/problem/496/E)|Codeforces||Codeforces Round #283 (Div. 2)|6|\n|<ul><li>- [ ] Done</li></ul>|230|[Cunning Gena](http://codeforces.com/problemset/problem/417/D)|Codeforces||RCC 2014 Warmup (Div. 2) & RCC 2014 Warmup (Div. 1)|6|\n|<ul><li>- [ ] Done</li></ul>|231|[Mittens](http://codeforces.com/problemset/problem/370/C)|Codeforces||Codeforces Round #217 (Div. 2)|6|\n|<ul><li>- [ ] Done</li></ul>|232|[Sereja and the Arrangement of Numbers](http://codeforces.com/problemset/problem/367/C)|Codeforces||Codeforces Round #215 (Div. 1) & Codeforces Round #215 (Div. 2)|6|\n|<ul><li>- [ ] Done</li></ul>|233|[Characteristics of Rectangles](http://codeforces.com/problemset/problem/333/D)|Codeforces||Codeforces Round #194 (Div. 1)|6|\n|<ul><li>- [ ] Done</li></ul>|234|[Oh Sweet Beaverette](http://codeforces.com/problemset/problem/331/A2)|Codeforces||ABBYY Cup 3.0 - Finals (online version)|6|\n|<ul><li>- [ ] Done</li></ul>|235|[Unsorting Array](http://codeforces.com/problemset/problem/252/B)|Codeforces||Codeforces Round #153 (Div. 2)|6|\n|<ul><li>- [ ] Done</li></ul>|236|[Ada and Cucumber](http://www.spoj.com/problems/ADAPICK/)|SPOJ|||6|\n|<ul><li>- [ ] Done</li></ul>|237|[Rooter's Song](http://codeforces.com/problemset/problem/848/B)|Codeforces||Codeforces Round #431 (Div. 1) & Codeforces Round #431 (Div. 2)|6|\n|<ul><li>- [ ] Done</li></ul>|238|[Sonya and Problem Wihtout a Legend](http://codeforces.com/problemset/problem/713/C)|Codeforces||Codeforces Round #371 (Div. 1) & Codeforces Round #371 (Div. 2)|6|\n|<ul><li>- [ ] Done</li></ul>|239|[Mike and distribution](http://codeforces.com/problemset/problem/798/D)|Codeforces||Codeforces Round #410 (Div. 2)|6|\n|<ul><li>- [ ] Done</li></ul>|240|[Blood Cousins Return](http://codeforces.com/problemset/problem/246/E)|Codeforces||Codeforces Round #151 (Div. 2)|7|\n|<ul><li>- [ ] Done</li></ul>|241|[Spider's Web](http://codeforces.com/problemset/problem/216/D)|Codeforces||Codeforces Round #133 (Div. 2)|7|\n|<ul><li>- [ ] Done</li></ul>|242|[Paint Tree](http://codeforces.com/problemset/problem/196/C)|Codeforces||Codeforces Round #124 (Div. 1) & Codeforces Round #124 (Div. 2)|7|\n|<ul><li>- [ ] Done</li></ul>|243|[Analyzing Polyline](http://codeforces.com/problemset/problem/195/D)|Codeforces||Codeforces Round #123 (Div. 2)|7|\n|<ul><li>- [ ] Done</li></ul>|244|[Counter Attack](http://codeforces.com/problemset/problem/190/E)|Codeforces||Codeforces Round #120 (Div. 2)|7|\n|<ul><li>- [ ] Done</li></ul>|245|[Geometry Horse](http://codeforces.com/problemset/problem/175/C)|Codeforces||Codeforces Round #115|7|\n|<ul><li>- [ ] Done</li></ul>|246|[Edges in MST](http://codeforces.com/problemset/problem/160/D)|Codeforces||Codeforces Round #111 (Div. 2)|7|\n|<ul><li>- [ ] Done</li></ul>|247|[Zebra Tower](http://codeforces.com/problemset/problem/159/E)|Codeforces||VK Cup 2012 Qualification Round 2|7|\n|<ul><li>- [ ] Done</li></ul>|248|[Mushroom Gnomes - 2](http://codeforces.com/problemset/problem/138/C)|Codeforces||Codeforces Beta Round #99 (Div. 1) & Codeforces Beta Round #99 (Div. 2)|7|\n|<ul><li>- [ ] Done</li></ul>|249|[Minimum Sum](http://codeforces.com/problemset/problem/120/J)|Codeforces||School Regional Team Contest, Saratov, 2011|7|\n|<ul><li>- [ ] Done</li></ul>|250|[Before Exam](http://codeforces.com/problemset/problem/119/B)|Codeforces||Codeforces Beta Round #90|7|\n|<ul><li>- [ ] Done</li></ul>|251|[General Mobilization](http://codeforces.com/problemset/problem/82/C)|Codeforces||Yandex.Algorithm 2011 Qualification 2|7|\n|<ul><li>- [ ] Done</li></ul>|252|[Gift](http://codeforces.com/problemset/problem/76/A)|Codeforces||All-Ukrainian School Olympiad in Informatics|7|\n|<ul><li>- [ ] Done</li></ul>|253|[Domino Principle](http://codeforces.com/problemset/problem/56/E)|Codeforces||Codeforces Beta Round #52 (Div. 2)|7|\n|<ul><li>- [ ] Done</li></ul>|254|[Knights](http://codeforces.com/problemset/problem/33/D)|Codeforces||Codeforces Beta Round #33 (Codeforces format)|7|\n|<ul><li>- [ ] Done</li></ul>|255|[Ball](http://codeforces.com/problemset/problem/12/D)|Codeforces||Codeforces Beta Round #12 (Div 2 Only)|7|\n|<ul><li>- [ ] Done</li></ul>|256|[Hostname Aliases](http://codeforces.com/problemset/problem/644/C)|Codeforces||CROC 2016 - Qualification|7|\n|<ul><li>- [ ] Done</li></ul>|257|[Bear and Contribution](http://codeforces.com/problemset/problem/639/D)|Codeforces||VK Cup 2016 - Round 1|7|\n|<ul><li>- [ ] Done</li></ul>|258|[Guess Your Way Out! II](http://codeforces.com/problemset/problem/558/D)|Codeforces||Codeforces Round #312 (Div. 2)|7|\n|<ul><li>- [ ] Done</li></ul>|259|[Group Photo 2 (online mirror version)](http://codeforces.com/problemset/problem/529/B)|Codeforces||VK Cup 2015 - Round 1 (unofficial online mirror, Div. 1 only)|7|\n|<ul><li>- [ ] Done</li></ul>|260|[Bug in Code](http://codeforces.com/problemset/problem/421/D)|Codeforces||Coder-Strike 2014 - Finals (online edition, Div. 2) & Coder-Strike 2014 - Finals (online edition, Div. 1) & Coder-Strike 2014 - Finals (online edition, Div. 2) & Coder-Strike 2014 - Finals (online edition, Div. 1)|7|\n|<ul><li>- [ ] Done</li></ul>|261|[Students' Revenge](http://codeforces.com/problemset/problem/332/C)|Codeforces||Codeforces Round #193 (Div. 2)|7|\n|<ul><li>- [ ] Done</li></ul>|262|[Lovely Matrix](http://codeforces.com/problemset/problem/274/D)|Codeforces||Codeforces Round #168 (Div. 1)|7|\n|<ul><li>- [ ] Done</li></ul>|263|[Playlist](http://codeforces.com/problemset/problem/268/E)|Codeforces||Codeforces Round #164 (Div. 2)|7|\n|<ul><li>- [ ] Done</li></ul>|264|[Event Dates](http://codeforces.com/problemset/problem/45/D)|Codeforces||School Team Contest #3 (Winter Computer School 2010/11)|7|\n|<ul><li>- [ ] Done</li></ul>|265|[Bamboo Partition](http://codeforces.com/problemset/problem/830/C)|Codeforces||Codeforces Round #424 (Div. 1, rated, based on VK Cup Finals) & Codeforces Round #424 (Div. 2, rated, based on VK Cup Finals)|7|\n|<ul><li>- [ ] Done</li></ul>|266|[Printer](http://codeforces.com/problemset/problem/253/E)|Codeforces||Codeforces Round #154 (Div. 2)|8|\n|<ul><li>- [ ] Done</li></ul>|267|[Conveyor](http://codeforces.com/problemset/problem/163/C)|Codeforces||VK Cup 2012 Round 2|8|\n|<ul><li>- [ ] Done</li></ul>|268|[Castle](http://codeforces.com/problemset/problem/101/D)|Codeforces||Codeforces Beta Round #79 (Div. 1 Only)|8|\n|<ul><li>- [ ] Done</li></ul>|269|[Beautiful Road](http://codeforces.com/problemset/problem/87/D)|Codeforces||Codeforces Beta Round #73 (Div. 1 Only)|8|\n|<ul><li>- [ ] Done</li></ul>|270|[Guard Towers](http://codeforces.com/problemset/problem/85/E)|Codeforces||Yandex.Algorithm 2011 Round 1|8|\n|<ul><li>- [ ] Done</li></ul>|271|[Petya and Tree](http://codeforces.com/problemset/problem/85/C)|Codeforces||Yandex.Algorithm 2011 Round 1|8|\n|<ul><li>- [ ] Done</li></ul>|272|[Need For Brake](http://codeforces.com/problemset/problem/73/B)|Codeforces||Codeforces Beta Round #66|8|\n|<ul><li>- [ ] Done</li></ul>|273|[Lucky Tickets](http://codeforces.com/problemset/problem/70/C)|Codeforces||Codeforces Beta Round #64|8|\n|<ul><li>- [ ] Done</li></ul>|274|[Parade](http://codeforces.com/problemset/problem/35/E)|Codeforces||Codeforces Beta Round #35 (Div. 2)|8|\n|<ul><li>- [ ] Done</li></ul>|275|[Oranges and Apples](http://codeforces.com/problemset/problem/23/C)|Codeforces||Codeforces Beta Round #23|8|\n|<ul><li>- [ ] Done</li></ul>|276|[Kingdom and its Cities](http://codeforces.com/problemset/problem/613/D)|Codeforces||Codeforces Round #339 (Div. 1)|8|\n|<ul><li>- [ ] Done</li></ul>|277|[Wilbur and Trees](http://codeforces.com/problemset/problem/596/D)|Codeforces||Codeforces Round #331 (Div. 2)|8|\n|<ul><li>- [ ] Done</li></ul>|278|[Place Your Ad Here](http://codeforces.com/problemset/problem/542/A)|Codeforces||VK Cup 2015 - Round 3 (unofficial online mirror, Div. 1 only)|8|\n|<ul><li>- [ ] Done</li></ul>|279|[Volcanoes](http://codeforces.com/problemset/problem/383/B)|Codeforces||Codeforces Round #225 (Div. 1) & Codeforces Round #225 (Div. 2)|8|\n|<ul><li>- [ ] Done</li></ul>|280|[Summer Earnings](http://codeforces.com/problemset/problem/333/E)|Codeforces||Codeforces Round #194 (Div. 1)|8|\n|<ul><li>- [ ] Done</li></ul>|281|[Sereja and Straight Lines](http://codeforces.com/problemset/problem/314/D)|Codeforces||Codeforces Round #187 (Div. 1)|8|\n|<ul><li>- [ ] Done</li></ul>|282|[Lucky Sorting](http://codeforces.com/problemset/problem/109/D)|Codeforces||Codeforces Beta Round #84 (Div. 1 Only)|8|\n|<ul><li>- [ ] Done</li></ul>|283|[Dividing Kingdom II](http://codeforces.com/problemset/problem/687/D)|Codeforces||Codeforces Round #360 (Div. 1)|8|\n|<ul><li>- [ ] Done</li></ul>|284|[Gosha is hunting](http://codeforces.com/problemset/problem/739/E)|Codeforces||Codeforces Round #381 (Div. 1)|8|\n|<ul><li>- [ ] Done</li></ul>|285|[Donkey and Stars](http://codeforces.com/problemset/problem/249/D)|Codeforces||Codeforces Round #152 (Div. 1)|9|\n|<ul><li>- [ ] Done</li></ul>|286|[Transportation](http://codeforces.com/problemset/problem/203/E)|Codeforces||Codeforces Round #128 (Div. 2)|9|\n|<ul><li>- [ ] Done</li></ul>|287|[Camping Groups](http://codeforces.com/problemset/problem/173/E)|Codeforces||Croc Champ 2012 - Round 1|9|\n|<ul><li>- [ ] Done</li></ul>|288|[Shoe Store](http://codeforces.com/problemset/problem/166/D)|Codeforces||Codeforces Round #113 (Div. 2)|9|\n|<ul><li>- [ ] Done</li></ul>|289|[Buses and People](http://codeforces.com/problemset/problem/160/E)|Codeforces||Codeforces Round #111 (Div. 2)|9|\n|<ul><li>- [ ] Done</li></ul>|290|[New Year Snowflake](http://codeforces.com/problemset/problem/140/F)|Codeforces||Codeforces Round #100|9|\n|<ul><li>- [ ] Done</li></ul>|291|[Item World](http://codeforces.com/problemset/problem/105/C)|Codeforces||Codeforces Beta Round #81|9|\n|<ul><li>- [ ] Done</li></ul>|292|[Inquisition](http://codeforces.com/problemset/problem/62/C)|Codeforces||Codeforces Beta Round #58|9|\n|<ul><li>- [ ] Done</li></ul>|293|[Cannon](http://codeforces.com/problemset/problem/47/E)|Codeforces||Codeforces Beta Round #44 (Div. 2)|9|\n|<ul><li>- [ ] Done</li></ul>|294|[Moon Craters](http://codeforces.com/problemset/problem/39/C)|Codeforces||School Team Contest #1 (Winter Computer School 2010/11)|9|\n|<ul><li>- [ ] Done</li></ul>|295|[Map](http://codeforces.com/problemset/problem/15/D)|Codeforces||Codeforces Beta Round #15|9|\n|<ul><li>- [ ] Done</li></ul>|296|[Bear and Paradox](http://codeforces.com/problemset/problem/639/E)|Codeforces||VK Cup 2016 - Round 1|9|\n|<ul><li>- [ ] Done</li></ul>|297|[Gerald and Path](http://codeforces.com/problemset/problem/559/E)|Codeforces||Codeforces Round #313 (Div. 1)|9|\n|<ul><li>- [ ] Done</li></ul>|298|[Roland and Rose](http://codeforces.com/problemset/problem/460/E)|Codeforces||Codeforces Round #262 (Div. 2)|9|\n|<ul><li>- [ ] Done</li></ul>|299|[New Year Tree Decorations](http://codeforces.com/problemset/problem/379/E)|Codeforces||Good Bye 2013|9|\n|<ul><li>- [ ] Done</li></ul>|300|[Optimizer](http://codeforces.com/problemset/problem/306/B)|Codeforces||Testing Round #6|9|\n|<ul><li>- [ ] Done</li></ul>|301|[Tourists](http://codeforces.com/problemset/problem/286/D)|Codeforces||Codeforces Round #176 (Div. 1)|9|\n|<ul><li>- [ ] Done</li></ul>|302|[Gripping Story](http://codeforces.com/problemset/problem/198/E)|Codeforces||Codeforces Round #125 (Div. 1)|9|\n|<ul><li>- [ ] Done</li></ul>|303|[Representative Sampling](http://codeforces.com/problemset/problem/178/F2)|Codeforces||ABBYY Cup 2.0 - Hard|9|\n|<ul><li>- [ ] Done</li></ul>|304|[Mike and code of a permutation](http://codeforces.com/problemset/problem/798/E)|Codeforces||Codeforces Round #410 (Div. 2)|9|\n|<ul><li>- [ ] Done</li></ul>|305|[MultiSort ](http://www.spoj.com/problems/MULSORT/)|SPOJ|||9|\n|<ul><li>- [ ] Done</li></ul>|306|[Array sorting](http://codeforces.com/problemset/problem/130/I)|Codeforces||Unknown Language Round #4|10|\n|<ul><li>- [ ] Done</li></ul>|307|[Sort the Table](http://codeforces.com/problemset/problem/64/I)|Codeforces||Unknown Language Round #1|10|\n|<ul><li>- [ ] Done</li></ul>|308|[Table Bowling](http://codeforces.com/problemset/problem/64/H)|Codeforces||Unknown Language Round #1|10|\n|<ul><li>- [ ] Done</li></ul>|309|[Snow sellers](http://codeforces.com/problemset/problem/48/F)|Codeforces||School Personal Contest #3 (Winter Computer School 2010/11) - Codeforces Beta Round #45 (ACM-ICPC Rules)|10|\n|<ul><li>- [ ] Done</li></ul>|310|[Berserk Robot ](http://codeforces.com/problemset/problem/538/G)|Codeforces||Codeforces Round #300|10|\n|<ul><li>- [ ] Done</li></ul>|311|[Triangles 3000](http://codeforces.com/problemset/problem/528/E)|Codeforces||Codeforces Round #296 (Div. 1)|10|\n|<ul><li>- [ ] Done</li></ul>|312|[Wavy numbers](http://codeforces.com/problemset/problem/478/E)|Codeforces||Codeforces Round #273 (Div. 2)|10|\n|<ul><li>- [ ] Done</li></ul>|313|[Furukawa Nagisa's Tree](http://codeforces.com/problemset/problem/434/E)|Codeforces||Codeforces Round #248 (Div. 1)|10|\n|<ul><li>- [ ] Done</li></ul>|314|[Looking for Owls](http://codeforces.com/problemset/problem/350/D)|Codeforces||Codeforces Round #203 (Div. 2)|10|\n|<ul><li>- [ ] Done</li></ul>|315|[Selling Numbers](http://codeforces.com/problemset/problem/778/E)|Codeforces||Codeforces Round #402 (Div. 1)|10|\n|<ul><li>- [ ] Done</li></ul>|316|[Caramel Clouds](http://codeforces.com/problemset/problem/833/E)|Codeforces||Codeforces Round #426 (Div. 1)|10|\n"
  },
  {
    "path": "categories/016. graphs/README.md",
    "content": "# 016. graphs\n\n\n| Checkbox | ID | Problem Name|Online Judge|Year|Contest|Difficulty Level|\n|:---:|:---:|:---:|:---:|:---:|:---:|:---:|\n|<ul><li>- [ ] Done</li></ul>|1|[Ice Skating](http://codeforces.com/problemset/problem/217/A)|Codeforces||Codeforces Round #134 (Div. 1) & Codeforces Round #134 (Div. 2)|1|\n|<ul><li>- [ ] Done</li></ul>|2|[Party](http://codeforces.com/problemset/problem/115/A)|Codeforces||Codeforces Beta Round #87 (Div. 1 Only) & Codeforces Beta Round #87 (Div. 2 Only)|1|\n|<ul><li>- [ ] Done</li></ul>|3|[Dijkstra?](http://codeforces.com/problemset/problem/20/C)|Codeforces||Codeforces Alpha Round #20 (Codeforces format)|1|\n|<ul><li>- [ ] Done</li></ul>|4|[The Dueling Philosophers Problem](https://icpcarchive.ecs.baylor.edu/index.php?option=onlinejudge&page=show_problem&problem=4206)|Live Archive|2012|North America - Mid-Atlantic USA|1|\n|<ul><li>- [ ] Done</li></ul>|5|[Graph Connectivity](https://uva.onlinejudge.org/index.php?option=onlinejudge&page=show_problem&problem=400)|UVA|||1|\n|<ul><li>- [ ] Done</li></ul>|6|[Network Connections](https://uva.onlinejudge.org/index.php?option=onlinejudge&page=show_problem&problem=734)|UVA|||1|\n|<ul><li>- [ ] Done</li></ul>|7|[Travel](http://acm.tju.edu.cn/toj/showp2819.html)|TJU|||1|\n|<ul><li>- [ ] Done</li></ul>|8|[Greatest K-Palindrome Substring](https://icpcarchive.ecs.baylor.edu/index.php?option=onlinejudge&page=show_problem&problem=2145)|Live Archive|2008|Asia - Jakarta|1|\n|<ul><li>- [ ] Done</li></ul>|9|[Searching the Graph](http://www.spoj.com/problems/TDBFS/)|SPOJ|||1|\n|<ul><li>- [ ] Done</li></ul>|10|[A Node Too Far](https://uva.onlinejudge.org/index.php?option=onlinejudge&page=show_problem&problem=272)|UVA|||1|\n|<ul><li>- [ ] Done</li></ul>|11|[Pouring water](http://www.spoj.com/problems/POUR1/)|SPOJ|||1|\n|<ul><li>- [ ] Done</li></ul>|12|[The Decoder](https://uva.onlinejudge.org/index.php?option=onlinejudge&page=show_problem&problem=399)|UVA|||1|\n|<ul><li>- [ ] Done</li></ul>|13|[Easy Problem from Rujia Liu?](https://uva.onlinejudge.org/index.php?option=onlinejudge&page=show_problem&problem=3142)|UVA|||1|\n|<ul><li>- [ ] Done</li></ul>|14|[Two Buttons](http://codeforces.com/problemset/problem/520/B)|Codeforces||Codeforces Round #295 (Div. 2)|1|\n|<ul><li>- [ ] Done</li></ul>|15|[New Year Transportation](http://codeforces.com/problemset/problem/500/A)|Codeforces||Good Bye 2014|1|\n|<ul><li>- [ ] Done</li></ul>|16|[Road Construction](http://codeforces.com/problemset/problem/330/B)|Codeforces||Codeforces Round #192 (Div. 2)|1|\n|<ul><li>- [ ] Done</li></ul>|17|[Young Physicist](http://codeforces.com/problemset/problem/69/A)|Codeforces||Codeforces Beta Round #63 (Div. 2)|1|\n|<ul><li>- [ ] Done</li></ul>|18|[Binary Numbers](http://acm.tju.edu.cn/toj/showp1477.html)|TJU|||1|\n|<ul><li>- [ ] Done</li></ul>|19|[NP-Hard Problem](http://codeforces.com/problemset/problem/687/A)|Codeforces||Codeforces Round #360 (Div. 1) & Codeforces Round #360 (Div. 2)|1|\n|<ul><li>- [ ] Done</li></ul>|20|[Bakery](http://codeforces.com/problemset/problem/707/B)|Codeforces||Codeforces Round #368 (Div. 2)|1|\n|<ul><li>- [ ] Done</li></ul>|21|[Luggage](https://uva.onlinejudge.org/index.php?option=onlinejudge&page=show_problem&problem=1605)|UVA|||1|\n|<ul><li>- [ ] Done</li></ul>|22|[Hotels Along the Croatian Coast](http://www.spoj.com/problems/HOTELS/)|SPOJ|||1|\n|<ul><li>- [ ] Done</li></ul>|23|[05-2 Rendezvous](https://uva.onlinejudge.org/index.php?option=onlinejudge&page=show_problem&problem=1956)|UVA|||2|\n|<ul><li>- [ ] Done</li></ul>|24|[Numbering Paths](https://uva.onlinejudge.org/index.php?option=onlinejudge&page=show_problem&problem=61)|UVA|||2|\n|<ul><li>- [ ] Done</li></ul>|25|[Topological Sorting](http://acm.timus.ru/problem.aspx?space=1&num=1280)|Timus|||2|\n|<ul><li>- [ ] Done</li></ul>|26|[True Friends](http://www.spoj.com/problems/TFRIENDS/)|SPOJ|||2|\n|<ul><li>- [ ] Done</li></ul>|27|[Matrix Transpose](https://uva.onlinejudge.org/index.php?option=onlinejudge&page=show_problem&problem=1836)|UVA|||2|\n|<ul><li>- [ ] Done</li></ul>|28|[Bear and Forgotten Tree 3](http://codeforces.com/problemset/problem/639/B)|Codeforces||VK Cup 2016 - Round 1|2|\n|<ul><li>- [ ] Done</li></ul>|29|[The Two Routes](http://codeforces.com/problemset/problem/601/A)|Codeforces||Codeforces Round #333 (Div. 1) & Codeforces Round #333 (Div. 2)|2|\n|<ul><li>- [ ] Done</li></ul>|30|[Bear and Three Musketeers](http://codeforces.com/problemset/problem/574/B)|Codeforces||Codeforces Round #318 [RussianCodeCup Thanks-Round] (Div. 2)|2|\n|<ul><li>- [ ] Done</li></ul>|31|[Reposts](http://codeforces.com/problemset/problem/522/A)|Codeforces||VK Cup 2015 - Qualification Round 1|2|\n|<ul><li>- [ ] Done</li></ul>|32|[Fox And Names](http://codeforces.com/problemset/problem/510/C)|Codeforces||Codeforces Round #290 (Div. 2) & Codeforces Round #290 (Div. 1)|2|\n|<ul><li>- [ ] Done</li></ul>|33|[Mr. Kitayuta's Colorful Graph](http://codeforces.com/problemset/problem/506/D)|Codeforces||Codeforces Round #286 (Div. 1) & Codeforces Round #286 (Div. 2) & Codeforces Round #286 (Div. 1) & Codeforces Round #286 (Div. 2)|2|\n|<ul><li>- [ ] Done</li></ul>|34|[New Year Permutation](http://codeforces.com/problemset/problem/500/B)|Codeforces||Good Bye 2014|2|\n|<ul><li>- [ ] Done</li></ul>|35|[Strongly Connected City](http://codeforces.com/problemset/problem/475/B)|Codeforces||Bayan 2015 Contest Warm Up|2|\n|<ul><li>- [ ] Done</li></ul>|36|[The Child and Toy](http://codeforces.com/problemset/problem/437/C)|Codeforces||Codeforces Round #250 (Div. 2) & Codeforces Round #250 (Div. 1)|2|\n|<ul><li>- [ ] Done</li></ul>|37|[Checkposts](http://codeforces.com/problemset/problem/427/C)|Codeforces||Codeforces Round #244 (Div. 2)|2|\n|<ul><li>- [ ] Done</li></ul>|38|[Catenyms](http://poj.org/problem?id=2337)|PKU|||2|\n|<ul><li>- [ ] Done</li></ul>|39|[Colorful Graph](http://codeforces.com/problemset/problem/246/D)|Codeforces||Codeforces Round #151 (Div. 2)|3|\n|<ul><li>- [ ] Done</li></ul>|40|[Students and Shoelaces](http://codeforces.com/problemset/problem/129/B)|Codeforces||Codeforces Beta Round #94 (Div. 2 Only)|3|\n|<ul><li>- [ ] Done</li></ul>|41|[Cthulhu](http://codeforces.com/problemset/problem/103/B)|Codeforces||Codeforces Beta Round #80 (Div. 1 Only) & Codeforces Beta Round #80 (Div. 2 Only)|3|\n|<ul><li>- [ ] Done</li></ul>|42|[Going in Cycle!!](https://uva.onlinejudge.org/index.php?option=onlinejudge&page=show_problem&problem=2031)|UVA|||3|\n|<ul><li>- [ ] Done</li></ul>|43|[AlmostBipartiteMatching](http://community.topcoder.com/stat?c=problem_statement&pm=6820)|TopCoder||TCCC06 Wildcard - Div1 easy] (10135)|3|\n|<ul><li>- [ ] Done</li></ul>|44|[Two Rounds](http://acm.timus.ru/problem.aspx?space=1&num=1156)|Timus|||3|\n|<ul><li>- [ ] Done</li></ul>|45|[New Reform](http://codeforces.com/problemset/problem/659/E)|Codeforces||Codeforces Round #346 (Div. 2)|3|\n|<ul><li>- [ ] Done</li></ul>|46|[Graph and String](http://codeforces.com/problemset/problem/623/A)|Codeforces||AIM Tech Round (Div. 1) & AIM Tech Round (Div. 2)|3|\n|<ul><li>- [ ] Done</li></ul>|47|[Longtail Hedgehog](http://codeforces.com/problemset/problem/615/B)|Codeforces||Codeforces Round #338 (Div. 2)|3|\n|<ul><li>- [ ] Done</li></ul>|48|[Unbearable Controversy of Being](http://codeforces.com/problemset/problem/489/D)|Codeforces||Codeforces Round #277.5 (Div. 2)|3|\n|<ul><li>- [ ] Done</li></ul>|49|[Gargari and Permutations](http://codeforces.com/problemset/problem/463/D)|Codeforces||Codeforces Round #264 (Div. 2)|3|\n|<ul><li>- [ ] Done</li></ul>|50|[Football](http://codeforces.com/problemset/problem/417/C)|Codeforces||RCC 2014 Warmup (Div. 2) & RCC 2014 Warmup (Div. 1)|3|\n|<ul><li>- [ ] Done</li></ul>|51|[Valera and Elections](http://codeforces.com/problemset/problem/369/C)|Codeforces||Codeforces Round #216 (Div. 2)|3|\n|<ul><li>- [ ] Done</li></ul>|52|[Ping-Pong (Easy Version)](http://codeforces.com/problemset/problem/320/B)|Codeforces||Codeforces Round #189 (Div. 2)|3|\n|<ul><li>- [ ] Done</li></ul>|53|[Greg and Graph](http://codeforces.com/problemset/problem/295/B)|Codeforces||Codeforces Round #179 (Div. 1) & Codeforces Round #179 (Div. 2)|3|\n|<ul><li>- [ ] Done</li></ul>|54|[Network Topology](http://codeforces.com/problemset/problem/292/B)|Codeforces||Croc Champ 2013 - Round 1|3|\n|<ul><li>- [ ] Done</li></ul>|55|[Searching for Graph](http://codeforces.com/problemset/problem/402/C)|Codeforces||Codeforces Round #236 (Div. 2) & Codeforces Round #236 (Div. 1)|3|\n|<ul><li>- [ ] Done</li></ul>|56|[Misha and Forest](http://codeforces.com/problemset/problem/501/C)|Codeforces||Codeforces Round #285 (Div. 2) & Codeforces Round #285 (Div. 1)|3|\n|<ul><li>- [ ] Done</li></ul>|57|[Wedding of Sultan](https://uva.onlinejudge.org/index.php?option=onlinejudge&page=show_problem&problem=4027)|UVA|||3|\n|<ul><li>- [ ] Done</li></ul>|58|[As Long as I Learn, I Live](https://uva.onlinejudge.org/index.php?option=onlinejudge&page=show_problem&problem=3798)|UVA|||3|\n|<ul><li>- [ ] Done</li></ul>|59|[Hongcow Builds A Nation](http://codeforces.com/problemset/problem/744/A)|Codeforces||Codeforces Round #385 (Div. 1) & Codeforces Round #385 (Div. 2)|3|\n|<ul><li>- [ ] Done</li></ul>|60|[Journey](http://codeforces.com/problemset/problem/721/C)|Codeforces||Codeforces Round #374 (Div. 2)|3|\n|<ul><li>- [ ] Done</li></ul>|61|[Cryptography](p?ID=137)|A2 Online Judge|||3|\n|<ul><li>- [ ] Done</li></ul>|62|[King's Path](http://codeforces.com/problemset/problem/242/C)|Codeforces||Codeforces Round #149 (Div. 2)|4|\n|<ul><li>- [ ] Done</li></ul>|63|[Subway](http://codeforces.com/problemset/problem/131/D)|Codeforces||Codeforces Beta Round #95 (Div. 2)|4|\n|<ul><li>- [ ] Done</li></ul>|64|[Dorm Water Supply](http://codeforces.com/problemset/problem/107/A)|Codeforces||Codeforces Beta Round #83 (Div. 1 Only) & Codeforces Beta Round #83 (Div. 2 Only)|4|\n|<ul><li>- [ ] Done</li></ul>|65|[Eternal Victory](http://codeforces.com/problemset/problem/61/D)|Codeforces||Codeforces Beta Round #57 (Div. 2)|4|\n|<ul><li>- [ ] Done</li></ul>|66|[Road Map](http://codeforces.com/problemset/problem/34/D)|Codeforces||Codeforces Beta Round #34 (Div. 2)|4|\n|<ul><li>- [ ] Done</li></ul>|67|[Roads not only in Berland](http://codeforces.com/problemset/problem/25/D)|Codeforces||Codeforces Beta Round #25 (Div. 2 Only)|4|\n|<ul><li>- [ ] Done</li></ul>|68|[Roads in Berland](http://codeforces.com/problemset/problem/25/C)|Codeforces||Codeforces Beta Round #25 (Div. 2 Only)|4|\n|<ul><li>- [ ] Done</li></ul>|69|[Ring road](http://codeforces.com/problemset/problem/24/A)|Codeforces||Codeforces Beta Round #24|4|\n|<ul><li>- [ ] Done</li></ul>|70|[Graph Cut](http://www.spoj.com/problems/GRAPHCUT/)|SPOJ|||4|\n|<ul><li>- [ ] Done</li></ul>|71|[The Forrest for the Trees](https://icpcarchive.ecs.baylor.edu/index.php?option=onlinejudge&page=show_problem&problem=3355)|Live Archive|1997|North America - Greater NY|4|\n|<ul><li>- [ ] Done</li></ul>|72|[Gincana](http://br.spoj.com/problems/GINCAN11/)|SPOJ Brazil|||4|\n|<ul><li>- [ ] Done</li></ul>|73|[Instant View of Big Bang](https://uva.onlinejudge.org/index.php?option=onlinejudge&page=show_problem&problem=2768)|UVA|||4|\n|<ul><li>- [ ] Done</li></ul>|74|[Dream](https://uva.onlinejudge.org/index.php?option=onlinejudge&page=show_problem&problem=2409)|UVA|||4|\n|<ul><li>- [ ] Done</li></ul>|75|[Two Companies](http://www.codechef.com/problems/TWOCOMP)|CodeChef|||4|\n|<ul><li>- [ ] Done</li></ul>|76|[The Scrooge Co Problem](https://uva.onlinejudge.org/index.php?option=onlinejudge&page=show_problem&problem=1988)|UVA|||4|\n|<ul><li>- [ ] Done</li></ul>|77|[Lazy Student](http://codeforces.com/problemset/problem/605/B)|Codeforces||Codeforces Round #335 (Div. 1) & Codeforces Round #335 (Div. 2)|4|\n|<ul><li>- [ ] Done</li></ul>|78|[Regular Bridge](http://codeforces.com/problemset/problem/550/D)|Codeforces||Codeforces Round #306 (Div. 2)|4|\n|<ul><li>- [ ] Done</li></ul>|79|[Paths and Trees](http://codeforces.com/problemset/problem/545/E)|Codeforces||Codeforces Round #303 (Div. 2)|4|\n|<ul><li>- [ ] Done</li></ul>|80|[Destroying Roads](http://codeforces.com/problemset/problem/543/B)|Codeforces||Codeforces Round #302 (Div. 1) & Codeforces Round #302 (Div. 2)|4|\n|<ul><li>- [ ] Done</li></ul>|81|[New Year Santa Network](http://codeforces.com/problemset/problem/500/D)|Codeforces||Good Bye 2014|4|\n|<ul><li>- [ ] Done</li></ul>|82|[Jzzhu and Cities](http://codeforces.com/problemset/problem/449/B)|Codeforces||Codeforces Round #257 (Div. 1) & Codeforces Round #257 (Div. 2)|4|\n|<ul><li>- [ ] Done</li></ul>|83|[Restore Graph](http://codeforces.com/problemset/problem/404/C)|Codeforces||Codeforces Round #237 (Div. 2)|4|\n|<ul><li>- [ ] Done</li></ul>|84|[Cow Program](http://codeforces.com/problemset/problem/283/B)|Codeforces||Codeforces Round #174 (Div. 1) & Codeforces Round #174 (Div. 2)|4|\n|<ul><li>- [ ] Done</li></ul>|85|[The Explosion](http://www.spoj.com/problems/EXPLOSN/)|SPOJ|||4|\n|<ul><li>- [ ] Done</li></ul>|86|[Connecting Universities](http://codeforces.com/problemset/problem/700/B)|Codeforces||Codeforces Round #364 (Div. 1) & Codeforces Round #364 (Div. 2)|4|\n|<ul><li>- [ ] Done</li></ul>|87|[Alyona and a tree](http://codeforces.com/problemset/problem/739/B)|Codeforces||Codeforces Round #381 (Div. 1) & Codeforces Round #381 (Div. 2)|4|\n|<ul><li>- [ ] Done</li></ul>|88|[Resort](http://codeforces.com/problemset/problem/350/B)|Codeforces||Codeforces Round #203 (Div. 2)|4|\n|<ul><li>- [ ] Done</li></ul>|89|[Directed Roads](http://codeforces.com/problemset/problem/711/D)|Codeforces||Codeforces Round #369 (Div. 2)|4|\n|<ul><li>- [ ] Done</li></ul>|90|[Garland](http://codeforces.com/problemset/problem/767/C)|Codeforces||Codeforces Round #398 (Div. 2)|4|\n|<ul><li>- [ ] Done</li></ul>|91|[Ivan's Car](http://acm.timus.ru/problem.aspx?space=1&num=1930)|Timus|||4|\n|<ul><li>- [ ] Done</li></ul>|92|[Union of Doubly Linked Lists](http://codeforces.com/problemset/problem/847/A)|Codeforces||2017-2018 ACM-ICPC, NEERC, Southern Subregional Contest, qualification stage (Online Mirror, ACM-ICPC Rules, Teams Preferred)|4|\n|<ul><li>- [ ] Done</li></ul>|93|[Simple Dijkstras algorithm](http://www.spoj.com/problems/IITKESO207SPA3F1/)|SPOJ|||4|\n|<ul><li>- [ ] Done</li></ul>|94|[Reachability from the Capital](http://codeforces.com/problemset/problem/999/E)|Codeforces||Codeforces Round #490 (Div. 3)|4|\n|<ul><li>- [ ] Done</li></ul>|95|[Cycles](http://codeforces.com/problemset/problem/232/A)|Codeforces||Codeforces Round #144 (Div. 1) & Codeforces Round #144 (Div. 2)|5|\n|<ul><li>- [ ] Done</li></ul>|96|[Missile Silos](http://codeforces.com/problemset/problem/144/D)|Codeforces||Codeforces Round #103 (Div. 2)|5|\n|<ul><li>- [ ] Done</li></ul>|97|[Help General](http://codeforces.com/problemset/problem/142/B)|Codeforces||Codeforces Round #102 (Div. 1) & Codeforces Round #102 (Div. 2)|5|\n|<ul><li>- [ ] Done</li></ul>|98|[Cycle](http://codeforces.com/problemset/problem/117/C)|Codeforces||Codeforces Beta Round #88|5|\n|<ul><li>- [ ] Done</li></ul>|99|[Volleyball](http://codeforces.com/problemset/problem/95/C)|Codeforces||Codeforces Beta Round #77 (Div. 1 Only) & Codeforces Beta Round #77 (Div. 2 Only)|5|\n|<ul><li>- [ ] Done</li></ul>|100|[Mail Stamps](http://codeforces.com/problemset/problem/29/C)|Codeforces||Codeforces Beta Round #29 (Div. 2, Codeforces format)|5|\n|<ul><li>- [ ] Done</li></ul>|101|[pSort](http://codeforces.com/problemset/problem/28/B)|Codeforces||Codeforces Beta Round #28 (Codeforces format)|5|\n|<ul><li>- [ ] Done</li></ul>|102|[Two Paths](http://codeforces.com/problemset/problem/14/D)|Codeforces||Codeforces Beta Round #14 (Div. 2)|5|\n|<ul><li>- [ ] Done</li></ul>|103|[A Simple Task](http://codeforces.com/problemset/problem/11/D)|Codeforces||Codeforces Beta Round #11|5|\n|<ul><li>- [ ] Done</li></ul>|104|[Clique in the Divisibility Graph](http://codeforces.com/problemset/problem/566/F)|Codeforces||VK Cup 2015 - Finals, online mirror|5|\n|<ul><li>- [ ] Done</li></ul>|105|[Graph Coloring](https://icpcarchive.ecs.baylor.edu/index.php?option=onlinejudge&page=show_problem&problem=3604)|Live Archive|1995|Europe - Southwestern|5|\n|<ul><li>- [ ] Done</li></ul>|106|[Robot Rapping Results Report](http://codeforces.com/problemset/problem/645/D)|Codeforces||CROC 2016 - Elimination Round|5|\n|<ul><li>- [ ] Done</li></ul>|107|[Minimum spanning tree for each edge](http://codeforces.com/problemset/problem/609/E)|Codeforces||Educational Codeforces Round 3|5|\n|<ul><li>- [ ] Done</li></ul>|108|[Three States](http://codeforces.com/problemset/problem/590/C)|Codeforces||Codeforces Round #327 (Div. 1) & Codeforces Round #327 (Div. 2)|5|\n|<ul><li>- [ ] Done</li></ul>|109|[Vitaly and Cycle](http://codeforces.com/problemset/problem/557/D)|Codeforces||Codeforces Round #311 (Div. 2)|5|\n|<ul><li>- [ ] Done</li></ul>|110|[Breaking Good](http://codeforces.com/problemset/problem/507/E)|Codeforces||Codeforces Round #287 (Div. 2)|5|\n|<ul><li>- [ ] Done</li></ul>|111|[Dungeons and Candies](http://codeforces.com/problemset/problem/436/C)|Codeforces||Zepto Code Rush 2014|5|\n|<ul><li>- [ ] Done</li></ul>|112|[Dima and Bacteria](http://codeforces.com/problemset/problem/400/D)|Codeforces||Codeforces Round #234 (Div. 2)|5|\n|<ul><li>- [ ] Done</li></ul>|113|[Fox and Minimal path](http://codeforces.com/problemset/problem/388/B)|Codeforces||Codeforces Round #228 (Div. 1) & Codeforces Round #228 (Div. 2)|5|\n|<ul><li>- [ ] Done</li></ul>|114|[Inna and Dima](http://codeforces.com/problemset/problem/374/C)|Codeforces||Codeforces Round #220 (Div. 2)|5|\n|<ul><li>- [ ] Done</li></ul>|115|[Block Tower](http://codeforces.com/problemset/problem/327/D)|Codeforces||Codeforces Round #191 (Div. 2)|5|\n|<ul><li>- [ ] Done</li></ul>|116|[Yaroslav and Time](http://codeforces.com/problemset/problem/301/B)|Codeforces||Codeforces Round #182 (Div. 1) & Codeforces Round #182 (Div. 2)|5|\n|<ul><li>- [ ] Done</li></ul>|117|[Cycle in Graph](http://codeforces.com/problemset/problem/263/D)|Codeforces||Codeforces Round #161 (Div. 2)|5|\n|<ul><li>- [ ] Done</li></ul>|118|[Obsession with Robots](http://codeforces.com/problemset/problem/8/B)|Codeforces||Codeforces Beta Round #8|5|\n|<ul><li>- [ ] Done</li></ul>|119|[Complete The Graph](http://codeforces.com/problemset/problem/715/B)|Codeforces||Codeforces Round #372 (Div. 1) & Codeforces Round #372 (Div. 2)|5|\n|<ul><li>- [ ] Done</li></ul>|120|[Weird journey](http://codeforces.com/problemset/problem/788/B)|Codeforces||Codeforces Round #407 (Div. 1) & Codeforces Round #407 (Div. 2)|5|\n|<ul><li>- [ ] Done</li></ul>|121|[Mahmoud and a Dictionary](http://codeforces.com/problemset/problem/766/D)|Codeforces||Codeforces Round #396 (Div. 2)|5|\n|<ul><li>- [ ] Done</li></ul>|122|[Critical Links](https://icpcarchive.ecs.baylor.edu/index.php?option=onlinejudge&page=show_problem&problem=3293)|Live Archive|1997|Europe - Southeastern|5|\n|<ul><li>- [ ] Done</li></ul>|123|[Hydra](http://codeforces.com/problemset/problem/243/B)|Codeforces||Codeforces Round #150 (Div. 1) & Codeforces Round #150 (Div. 2)|6|\n|<ul><li>- [ ] Done</li></ul>|124|[Dispute](http://codeforces.com/problemset/problem/242/D)|Codeforces||Codeforces Round #149 (Div. 2)|6|\n|<ul><li>- [ ] Done</li></ul>|125|[Triangles](http://codeforces.com/problemset/problem/229/C)|Codeforces||Codeforces Round #142 (Div. 1) & Codeforces Round #142 (Div. 2)|6|\n|<ul><li>- [ ] Done</li></ul>|126|[The Road to Berland is Paved With Good Intentions](http://codeforces.com/problemset/problem/228/E)|Codeforces||Codeforces Round #141 (Div. 2)|6|\n|<ul><li>- [ ] Done</li></ul>|127|[Police Station](http://codeforces.com/problemset/problem/208/C)|Codeforces||Codeforces Round #130 (Div. 2)|6|\n|<ul><li>- [ ] Done</li></ul>|128|[Party](http://codeforces.com/problemset/problem/177/C2)|Codeforces||ABBYY Cup 2.0 - Easy|6|\n|<ul><li>- [ ] Done</li></ul>|129|[Party](http://codeforces.com/problemset/problem/177/C1)|Codeforces||ABBYY Cup 2.0 - Easy|6|\n|<ul><li>- [ ] Done</li></ul>|130|[Double Profiles](http://codeforces.com/problemset/problem/154/C)|Codeforces||Codeforces Round #109 (Div. 1) & Codeforces Round #109 (Div. 2)|6|\n|<ul><li>- [ ] Done</li></ul>|131|[Bertown roads](http://codeforces.com/problemset/problem/118/E)|Codeforces||Codeforces Beta Round #89 (Div. 2)|6|\n|<ul><li>- [ ] Done</li></ul>|132|[3-cycles](http://codeforces.com/problemset/problem/41/E)|Codeforces||Codeforces Beta Round #40 (Div. 2)|6|\n|<ul><li>- [ ] Done</li></ul>|133|[Ring Road 2](http://codeforces.com/problemset/problem/27/D)|Codeforces||Codeforces Beta Round #27 (Codeforces format, Div. 2)|6|\n|<ul><li>- [ ] Done</li></ul>|134|[System Administrator](http://codeforces.com/problemset/problem/22/C)|Codeforces||Codeforces Beta Round #22 (Div. 2 Only)|6|\n|<ul><li>- [ ] Done</li></ul>|135|[Military patrol](http://www.spoj.com/problems/MILPATR/)|SPOJ|||6|\n|<ul><li>- [ ] Done</li></ul>|136|[In Defence of a Garden](https://icpcarchive.ecs.baylor.edu/index.php?option=onlinejudge&page=show_problem&problem=646)|Live Archive|2002|North America - Mid-Atlantic USA|6|\n|<ul><li>- [ ] Done</li></ul>|137|[Join two kingdoms](https://uva.onlinejudge.org/index.php?option=onlinejudge&page=show_problem&problem=4415)|UVA|||6|\n|<ul><li>- [ ] Done</li></ul>|138|[Information Graph](http://codeforces.com/problemset/problem/466/E)|Codeforces||Codeforces Round #266 (Div. 2)|6|\n|<ul><li>- [ ] Done</li></ul>|139|[Polycarp and Hay](http://codeforces.com/problemset/problem/659/F)|Codeforces||Codeforces Round #346 (Div. 2)|6|\n|<ul><li>- [ ] Done</li></ul>|140|[Table Compression](http://codeforces.com/problemset/problem/650/C)|Codeforces||Codeforces Round #345 (Div. 1) & Codeforces Round #345 (Div. 2)|6|\n|<ul><li>- [ ] Done</li></ul>|141|[Love Triangles](http://codeforces.com/problemset/problem/553/C)|Codeforces||Codeforces Round #309 (Div. 1) & Codeforces Round #309 (Div. 2)|6|\n|<ul><li>- [ ] Done</li></ul>|142|[Work Group](http://codeforces.com/problemset/problem/533/B)|Codeforces||VK Cup 2015 - Round 2 (unofficial online mirror, Div. 1 only)|6|\n|<ul><li>- [ ] Done</li></ul>|143|[Tanya and Password](http://codeforces.com/problemset/problem/508/D)|Codeforces||Codeforces Round #288 (Div. 2)|6|\n|<ul><li>- [ ] Done</li></ul>|144|[Fedor and Essay](http://codeforces.com/problemset/problem/467/D)|Codeforces||Codeforces Round #267 (Div. 2)|6|\n|<ul><li>- [ ] Done</li></ul>|145|[Strictly Positive Matrix](http://codeforces.com/problemset/problem/402/E)|Codeforces||Codeforces Round #236 (Div. 2) & Codeforces Round #236 (Div. 1)|6|\n|<ul><li>- [ ] Done</li></ul>|146|[Sereja and the Arrangement of Numbers](http://codeforces.com/problemset/problem/367/C)|Codeforces||Codeforces Round #215 (Div. 1) & Codeforces Round #215 (Div. 2)|6|\n|<ul><li>- [ ] Done</li></ul>|147|[Greg and Friends](http://codeforces.com/problemset/problem/295/C)|Codeforces||Codeforces Round #179 (Div. 1) & Codeforces Round #179 (Div. 2)|6|\n|<ul><li>- [ ] Done</li></ul>|148|[Flawed Flow](http://codeforces.com/problemset/problem/269/C)|Codeforces||Codeforces Round #165 (Div. 1) & Codeforces Round #165 (Div. 2)|6|\n|<ul><li>- [ ] Done</li></ul>|149|[Partial Teacher](http://codeforces.com/problemset/problem/67/A)|Codeforces||Manthan 2011|6|\n|<ul><li>- [ ] Done</li></ul>|150|[Party](http://codeforces.com/problemset/problem/23/B)|Codeforces||Codeforces Beta Round #23|6|\n|<ul><li>- [ ] Done</li></ul>|151|[World Tour](http://codeforces.com/problemset/problem/666/B)|Codeforces||Codeforces Round #349 (Div. 1) & Codeforces Round #349 (Div. 2)|6|\n|<ul><li>- [ ] Done</li></ul>|152|[Mr. Kitayuta's Technology](http://codeforces.com/problemset/problem/505/D)|Codeforces||Codeforces Round #286 (Div. 2) & Codeforces Round #286 (Div. 1)|6|\n|<ul><li>- [ ] Done</li></ul>|153|[Vanya and Treasure](http://codeforces.com/problemset/problem/677/D)|Codeforces||Codeforces Round #355 (Div. 2)|6|\n|<ul><li>- [ ] Done</li></ul>|154|[CompilingDecksWithJokers](http://community.topcoder.com/stat?c=problem_statement&pm=8228)|TopCoder||SRM 380 - Div1 medium - Div2 hard] (10802)|6|\n|<ul><li>- [ ] Done</li></ul>|155|[Leha and another game about graph](http://codeforces.com/problemset/problem/840/B)|Codeforces||Codeforces Round #429 (Div. 1) & Codeforces Round #429 (Div. 2)|6|\n|<ul><li>- [ ] Done</li></ul>|156|[Legacy](http://codeforces.com/problemset/problem/786/B)|Codeforces||Codeforces Round #406 (Div. 1) & Codeforces Round #406 (Div. 2)|6|\n|<ul><li>- [ ] Done</li></ul>|157|[The Great Mixing](http://codeforces.com/problemset/problem/788/C)|Codeforces||Codeforces Round #407 (Div. 1) & Codeforces Round #407 (Div. 2)|6|\n|<ul><li>- [ ] Done</li></ul>|158|[Vladik and Favorite Game](http://codeforces.com/problemset/problem/811/D)|Codeforces||Codeforces Round #416 (Div. 2)|6|\n|<ul><li>- [ ] Done</li></ul>|159|[Shortest Path](p?ID=294)|A2 Online Judge|||6|\n|<ul><li>- [ ] Done</li></ul>|160|[A Pair of Graphs](https://icpcarchive.ecs.baylor.edu/index.php?option=onlinejudge&page=show_problem&problem=2352)|Live Archive|2008|Asia - Hangzhou|6|\n|<ul><li>- [ ] Done</li></ul>|161|[Increasing Shortest Path](p?ID=4)|A2 Online Judge|||6|\n|<ul><li>- [ ] Done</li></ul>|162|[Color the Map](https://icpcarchive.ecs.baylor.edu/index.php?option=onlinejudge&page=show_problem&problem=1192)|Live Archive|2004|Asia - Ehime|6|\n|<ul><li>- [ ] Done</li></ul>|163|[Build String](http://codeforces.com/problemset/problem/237/E)|Codeforces||Codeforces Round #147 (Div. 2)|7|\n|<ul><li>- [ ] Done</li></ul>|164|[Cactus](http://codeforces.com/problemset/problem/231/E)|Codeforces||Codeforces Round #143 (Div. 2)|7|\n|<ul><li>- [ ] Done</li></ul>|165|[Snake](http://codeforces.com/problemset/problem/225/D)|Codeforces||Codeforces Round #139 (Div. 2)|7|\n|<ul><li>- [ ] Done</li></ul>|166|[Counter Attack](http://codeforces.com/problemset/problem/190/E)|Codeforces||Codeforces Round #120 (Div. 2)|7|\n|<ul><li>- [ ] Done</li></ul>|167|[Variable, or There and Back Again](http://codeforces.com/problemset/problem/164/A)|Codeforces||VK Cup 2012 Round 3|7|\n|<ul><li>- [ ] Done</li></ul>|168|[Edges in MST](http://codeforces.com/problemset/problem/160/D)|Codeforces||Codeforces Round #111 (Div. 2)|7|\n|<ul><li>- [ ] Done</li></ul>|169|[Lucky Country](http://codeforces.com/problemset/problem/95/E)|Codeforces||Codeforces Beta Round #77 (Div. 1 Only)|7|\n|<ul><li>- [ ] Done</li></ul>|170|[Ski Base](http://codeforces.com/problemset/problem/91/C)|Codeforces||Codeforces Beta Round #75 (Div. 1 Only) & Codeforces Beta Round #75 (Div. 2 Only)|7|\n|<ul><li>- [ ] Done</li></ul>|171|[Gift](http://codeforces.com/problemset/problem/76/A)|Codeforces||All-Ukrainian School Olympiad in Informatics|7|\n|<ul><li>- [ ] Done</li></ul>|172|[Chessboard Billiard](http://codeforces.com/problemset/problem/74/C)|Codeforces||Codeforces Beta Round #68|7|\n|<ul><li>- [ ] Done</li></ul>|173|[Shortest Path](http://codeforces.com/problemset/problem/59/E)|Codeforces||Codeforces Beta Round #55 (Div. 2)|7|\n|<ul><li>- [ ] Done</li></ul>|174|[Knights](http://codeforces.com/problemset/problem/33/D)|Codeforces||Codeforces Beta Round #33 (Codeforces format)|7|\n|<ul><li>- [ ] Done</li></ul>|175|[Graph Reconstruction](http://codeforces.com/problemset/problem/329/C)|Codeforces||Codeforces Round #192 (Div. 1) & Codeforces Round #192 (Div. 2)|7|\n|<ul><li>- [ ] Done</li></ul>|176|[Non-Stop Travel](https://icpcarchive.ecs.baylor.edu/index.php?option=onlinejudge&page=show_problem&problem=3450)|Live Archive|1995|North America - North Central NA|7|\n|<ul><li>- [ ] Done</li></ul>|177|[Bear and Forgotten Tree 2](http://codeforces.com/problemset/problem/653/E)|Codeforces||IndiaHacks 2016 - Online Edition (Div. 1 + Div. 2)|7|\n|<ul><li>- [ ] Done</li></ul>|178|[Pursuit For Artifacts](http://codeforces.com/problemset/problem/652/E)|Codeforces||Educational Codeforces Round 10|7|\n|<ul><li>- [ ] Done</li></ul>|179|[Three-dimensional Turtle Super Computer ](http://codeforces.com/problemset/problem/638/D)|Codeforces||VK Cup 2016 - Qualification Round 2|7|\n|<ul><li>- [ ] Done</li></ul>|180|[Square Root of Permutation](http://codeforces.com/problemset/problem/612/E)|Codeforces||Educational Codeforces Round 4|7|\n|<ul><li>- [ ] Done</li></ul>|181|[President and Roads](http://codeforces.com/problemset/problem/567/E)|Codeforces||Codeforces Round #Pi (Div. 2)|7|\n|<ul><li>- [ ] Done</li></ul>|182|[Case of Computer Network](http://codeforces.com/problemset/problem/555/E)|Codeforces||Codeforces Round #310 (Div. 1)|7|\n|<ul><li>- [ ] Done</li></ul>|183|[Nudist Beach](http://codeforces.com/problemset/problem/553/D)|Codeforces||Codeforces Round #309 (Div. 1)|7|\n|<ul><li>- [ ] Done</li></ul>|184|[Mike and Fish](http://codeforces.com/problemset/problem/547/D)|Codeforces||Codeforces Round #305 (Div. 1)|7|\n|<ul><li>- [ ] Done</li></ul>|185|[Idempotent functions](http://codeforces.com/problemset/problem/542/C)|Codeforces||VK Cup 2015 - Round 3 (unofficial online mirror, Div. 1 only)|7|\n|<ul><li>- [ ] Done</li></ul>|186|[Data Center Drama](http://codeforces.com/problemset/problem/527/E)|Codeforces||Codeforces Round #296 (Div. 2) & Codeforces Round #296 (Div. 1)|7|\n|<ul><li>- [ ] Done</li></ul>|187|[Valera and Swaps](http://codeforces.com/problemset/problem/441/D)|Codeforces||Codeforces Round #252 (Div. 2)|7|\n|<ul><li>- [ ] Done</li></ul>|188|[Bug in Code](http://codeforces.com/problemset/problem/420/C)|Codeforces||Coder-Strike 2014 - Finals (online edition, Div. 2) & Coder-Strike 2014 - Finals (online edition, Div. 1) & Coder-Strike 2014 - Finals (online edition, Div. 2) & Coder-Strike 2014 - Finals (online edition, Div. 1)|7|\n|<ul><li>- [ ] Done</li></ul>|189|[President's Path](http://codeforces.com/problemset/problem/416/E)|Codeforces||Codeforces Round #241 (Div. 2)|7|\n|<ul><li>- [ ] Done</li></ul>|190|[Ksenia and Pawns](http://codeforces.com/problemset/problem/382/D)|Codeforces||Codeforces Round #224 (Div. 2)|7|\n|<ul><li>- [ ] Done</li></ul>|191|[Fools and Foolproof Roads](http://codeforces.com/problemset/problem/362/D)|Codeforces||Codeforces Round #212 (Div. 2)|7|\n|<ul><li>- [ ] Done</li></ul>|192|[Wrong Floyd](http://codeforces.com/problemset/problem/350/E)|Codeforces||Codeforces Round #203 (Div. 2)|7|\n|<ul><li>- [ ] Done</li></ul>|193|[Lovely Matrix](http://codeforces.com/problemset/problem/274/D)|Codeforces||Codeforces Round #168 (Div. 1)|7|\n|<ul><li>- [ ] Done</li></ul>|194|[Dima and Horses](http://codeforces.com/problemset/problem/272/E)|Codeforces||Codeforces Round #167 (Div. 2) & Codeforces Round #167 (Div. 1)|7|\n|<ul><li>- [ ] Done</li></ul>|195|[Black and White Tree](http://codeforces.com/problemset/problem/260/D)|Codeforces||Codeforces Round #158 (Div. 2)|7|\n|<ul><li>- [ ] Done</li></ul>|196|[Graph Cutting](http://codeforces.com/problemset/problem/405/E)|Codeforces||Codeforces Round #238 (Div. 2) & Codeforces Round #238 (Div. 1)|7|\n|<ul><li>- [ ] Done</li></ul>|197|[Envy](http://codeforces.com/problemset/problem/891/C)|Codeforces||Codeforces Round #446 (Div. 1) & Codeforces Round #446 (Div. 2)|7|\n|<ul><li>- [ ] Done</li></ul>|198|[Ant Man](http://codeforces.com/problemset/problem/704/B)|Codeforces||Codeforces Round #366 (Div. 1) & Codeforces Round #366 (Div. 2)|7|\n|<ul><li>- [ ] Done</li></ul>|199|[Okabe and City](http://codeforces.com/problemset/problem/821/D)|Codeforces||Codeforces Round #420 (Div. 2)|7|\n|<ul><li>- [ ] Done</li></ul>|200|[Ralph and Mushrooms](http://codeforces.com/problemset/problem/894/E)|Codeforces||Codeforces Round #447 (Div. 2)|7|\n|<ul><li>- [ ] Done</li></ul>|201|[Suggested Friends](http://codeforces.com/problemset/problem/245/G)|Codeforces||CROC-MBTU 2012, Elimination Round (ACM-ICPC)|8|\n|<ul><li>- [ ] Done</li></ul>|202|[Flights](http://codeforces.com/problemset/problem/241/E)|Codeforces||Bayan 2012-2013 Elimination Round (ACM ICPC Rules, English statements)|8|\n|<ul><li>- [ ] Done</li></ul>|203|[T-decomposition](http://codeforces.com/problemset/problem/237/D)|Codeforces||Codeforces Round #147 (Div. 2)|8|\n|<ul><li>- [ ] Done</li></ul>|204|[Trails and Glades](http://codeforces.com/problemset/problem/209/C)|Codeforces||VK Cup 2012 Finals, Practice Session|8|\n|<ul><li>- [ ] Done</li></ul>|205|[Opening Portals](http://codeforces.com/problemset/problem/196/E)|Codeforces||Codeforces Round #124 (Div. 1)|8|\n|<ul><li>- [ ] Done</li></ul>|206|[Clues](http://codeforces.com/problemset/problem/156/D)|Codeforces||Codeforces Round #110 (Div. 1)|8|\n|<ul><li>- [ ] Done</li></ul>|207|[Smile House](http://codeforces.com/problemset/problem/147/B)|Codeforces||Codeforces Testing Round #4|8|\n|<ul><li>- [ ] Done</li></ul>|208|[Clearing Up](http://codeforces.com/problemset/problem/141/E)|Codeforces||Codeforces Round #101 (Div. 2)|8|\n|<ul><li>- [ ] Done</li></ul>|209|[Take-off Ramps](http://codeforces.com/problemset/problem/141/D)|Codeforces||Codeforces Round #101 (Div. 2)|8|\n|<ul><li>- [ ] Done</li></ul>|210|[Swaps](http://codeforces.com/problemset/problem/134/C)|Codeforces||Codeforces Testing Round #3|8|\n|<ul><li>- [ ] Done</li></ul>|211|[MST Company](http://codeforces.com/problemset/problem/125/E)|Codeforces||Codeforces Testing Round #2|8|\n|<ul><li>- [ ] Done</li></ul>|212|[Widget Library](http://codeforces.com/problemset/problem/89/B)|Codeforces||Codeforces Beta Round #74 (Div. 1 Only) & Codeforces Beta Round #74 (Div. 2 Only)|8|\n|<ul><li>- [ ] Done</li></ul>|213|[Guard Towers](http://codeforces.com/problemset/problem/85/E)|Codeforces||Yandex.Algorithm 2011 Round 1|8|\n|<ul><li>- [ ] Done</li></ul>|214|[FreeDiv](http://codeforces.com/problemset/problem/73/D)|Codeforces||Codeforces Beta Round #66|8|\n|<ul><li>- [ ] Done</li></ul>|215|[Quarrel](http://codeforces.com/problemset/problem/29/E)|Codeforces||Codeforces Beta Round #29 (Div. 2, Codeforces format)|8|\n|<ul><li>- [ ] Done</li></ul>|216|[Tickets](http://codeforces.com/problemset/problem/26/D)|Codeforces||Codeforces Beta Round #26 (Codeforces format)|8|\n|<ul><li>- [ ] Done</li></ul>|217|[Traveling Graph](http://codeforces.com/problemset/problem/21/D)|Codeforces||Codeforces Alpha Round #21 (Codeforces format)|8|\n|<ul><li>- [ ] Done</li></ul>|218|[Interestring graph and Apples](http://codeforces.com/problemset/problem/9/E)|Codeforces||Codeforces Beta Round #9 (Div. 2 Only)|8|\n|<ul><li>- [ ] Done</li></ul>|219|[In Defence of a Garden](http://poj.org/problem?id=2875)|PKU|||8|\n|<ul><li>- [ ] Done</li></ul>|220|[Magic Matrix](http://codeforces.com/problemset/problem/632/F)|Codeforces||Educational Codeforces Round 9|8|\n|<ul><li>- [ ] Done</li></ul>|221|[Kingdom and its Cities](http://codeforces.com/problemset/problem/613/D)|Codeforces||Codeforces Round #339 (Div. 1)|8|\n|<ul><li>- [ ] Done</li></ul>|222|[CNF 2](http://codeforces.com/problemset/problem/571/C)|Codeforces||Codeforces Round #317 [AimFund Thanks-Round] (Div. 1) & Codeforces Round #317 [AimFund Thanks-Round] (Div. 2)|8|\n|<ul><li>- [ ] Done</li></ul>|223|[Playing on Graph](http://codeforces.com/problemset/problem/542/E)|Codeforces||VK Cup 2015 - Round 3 (unofficial online mirror, Div. 1 only)|8|\n|<ul><li>- [ ] Done</li></ul>|224|[Tourists](http://codeforces.com/problemset/problem/487/E)|Codeforces||Codeforces Round #278 (Div. 1)|8|\n|<ul><li>- [ ] Done</li></ul>|225|[Parcels](http://codeforces.com/problemset/problem/480/D)|Codeforces||Codeforces Round #274 (Div. 1)|8|\n|<ul><li>- [ ] Done</li></ul>|226|[Points and Segments](http://codeforces.com/problemset/problem/429/E)|Codeforces||Codeforces Round #245 (Div. 1)|8|\n|<ul><li>- [ ] Done</li></ul>|227|[Sereja and Tree](http://codeforces.com/problemset/problem/380/B)|Codeforces||Codeforces Round #223 (Div. 1) & Codeforces Round #223 (Div. 2)|8|\n|<ul><li>- [ ] Done</li></ul>|228|[Petya and Pipes](http://codeforces.com/problemset/problem/362/E)|Codeforces||Codeforces Round #212 (Div. 2)|8|\n|<ul><li>- [ ] Done</li></ul>|229|[Balance](http://codeforces.com/problemset/problem/317/C)|Codeforces||Codeforces Round #188 (Div. 1) & Codeforces Round #188 (Div. 2)|8|\n|<ul><li>- [ ] Done</li></ul>|230|[Dominoes](http://codeforces.com/problemset/problem/267/B)|Codeforces||Codeforces Testing Round #5|8|\n|<ul><li>- [ ] Done</li></ul>|231|[BerDonalds](http://codeforces.com/problemset/problem/266/D)|Codeforces||Codeforces Round #163 (Div. 2)|8|\n|<ul><li>- [ ] Done</li></ul>|232|[Scheme](http://codeforces.com/problemset/problem/22/E)|Codeforces||Codeforces Beta Round #22 (Div. 2 Only)|8|\n|<ul><li>- [ ] Done</li></ul>|233|[Beads](http://codeforces.com/problemset/problem/8/E)|Codeforces||Codeforces Beta Round #8|8|\n|<ul><li>- [ ] Done</li></ul>|234|[Tournament](http://codeforces.com/problemset/problem/878/C)|Codeforces||Codeforces Round #443 (Div. 1) & Codeforces Round #443 (Div. 2)|8|\n|<ul><li>- [ ] Done</li></ul>|235|[Vladik and Entertaining Flags](http://codeforces.com/problemset/problem/811/E)|Codeforces||Codeforces Round #416 (Div. 2)|8|\n|<ul><li>- [ ] Done</li></ul>|236|[Mother of Dragons](http://codeforces.com/problemset/problem/839/E)|Codeforces||Codeforces Round #428 (Div. 2)|8|\n|<ul><li>- [ ] Done</li></ul>|237|[Graph basics concepts](http://www.spoj.com/problems/GRAPHS12/)|SPOJ|||8|\n|<ul><li>- [ ] Done</li></ul>|238|[Road Repairs](http://codeforces.com/problemset/problem/240/E)|Codeforces||Codeforces Round #145 (Div. 1, ACM-ICPC Rules)|9|\n|<ul><li>- [ ] Done</li></ul>|239|[Meeting Her](http://codeforces.com/problemset/problem/238/E)|Codeforces||Codeforces Round #148 (Div. 1)|9|\n|<ul><li>- [ ] Done</li></ul>|240|[Graph Game](http://codeforces.com/problemset/problem/235/D)|Codeforces||Codeforces Round #146 (Div. 1)|9|\n|<ul><li>- [ ] Done</li></ul>|241|[Metro Scheme](http://codeforces.com/problemset/problem/191/D)|Codeforces||Codeforces Round #121 (Div. 1)|9|\n|<ul><li>- [ ] Done</li></ul>|242|[Battlefield](http://codeforces.com/problemset/problem/182/A)|Codeforces||Codeforces Round #117 (Div. 2)|9|\n|<ul><li>- [ ] Done</li></ul>|243|[Deputies](http://codeforces.com/problemset/problem/173/D)|Codeforces||Croc Champ 2012 - Round 1|9|\n|<ul><li>- [ ] Done</li></ul>|244|[Garden](http://codeforces.com/problemset/problem/152/E)|Codeforces||Codeforces Round #108 (Div. 2)|9|\n|<ul><li>- [ ] Done</li></ul>|245|[Maze](http://codeforces.com/problemset/problem/123/E)|Codeforces||Codeforces Beta Round #92 (Div. 1 Only)|9|\n|<ul><li>- [ ] Done</li></ul>|246|[Winning Strategy](http://codeforces.com/problemset/problem/97/C)|Codeforces||Yandex.Algorithm 2011 Finals|9|\n|<ul><li>- [ ] Done</li></ul>|247|[Grocer's Problem](http://codeforces.com/problemset/problem/91/D)|Codeforces||Codeforces Beta Round #75 (Div. 1 Only)|9|\n|<ul><li>- [ ] Done</li></ul>|248|[Track](http://codeforces.com/problemset/problem/83/C)|Codeforces||Codeforces Beta Round #72 (Div. 1 Only) & Codeforces Beta Round #72 (Div. 2 Only)|9|\n|<ul><li>- [ ] Done</li></ul>|249|[Evacuation](http://codeforces.com/problemset/problem/78/E)|Codeforces||Codeforces Beta Round #70 (Div. 2)|9|\n|<ul><li>- [ ] Done</li></ul>|250|[Wormhouse](http://codeforces.com/problemset/problem/62/D)|Codeforces||Codeforces Beta Round #58|9|\n|<ul><li>- [ ] Done</li></ul>|251|[Caterpillar](http://codeforces.com/problemset/problem/51/F)|Codeforces||Codeforces Beta Round #48|9|\n|<ul><li>- [ ] Done</li></ul>|252|[Pentagon](http://codeforces.com/problemset/problem/51/E)|Codeforces||Codeforces Beta Round #48|9|\n|<ul><li>- [ ] Done</li></ul>|253|[Ivan the Fool VS Gorynych the Dragon](http://codeforces.com/problemset/problem/48/E)|Codeforces||School Personal Contest #3 (Winter Computer School 2010/11) - Codeforces Beta Round #45 (ACM-ICPC Rules)|9|\n|<ul><li>- [ ] Done</li></ul>|254|[Hercule Poirot Problem](http://codeforces.com/problemset/problem/46/F)|Codeforces||School Personal Contest #2 (Winter Computer School 2010/11) - Codeforces Beta Round #43 (ACM-ICPC Rules)|9|\n|<ul><li>- [ ] Done</li></ul>|255|[Trial for Chief](http://codeforces.com/problemset/problem/37/E)|Codeforces||Codeforces Beta Round #37|9|\n|<ul><li>- [ ] Done</li></ul>|256|[Two Paths](http://codeforces.com/problemset/problem/36/E)|Codeforces||Codeforces Beta Round #36|9|\n|<ul><li>- [ ] Done</li></ul>|257|[The Classic Problem](http://codeforces.com/problemset/problem/464/E)|Codeforces||Codeforces Round #265 (Div. 1)|9|\n|<ul><li>- [ ] Done</li></ul>|258|[Edge coloring of bipartite graph](http://codeforces.com/problemset/problem/600/F)|Codeforces||Educational Codeforces Round 2|9|\n|<ul><li>- [ ] Done</li></ul>|259|[Wilbur and Strings](http://codeforces.com/problemset/problem/596/E)|Codeforces||Codeforces Round #331 (Div. 2)|9|\n|<ul><li>- [ ] Done</li></ul>|260|[Cycling City](http://codeforces.com/problemset/problem/521/E)|Codeforces||Codeforces Round #295 (Div. 1)|9|\n|<ul><li>- [ ] Done</li></ul>|261|[Big Problems for Organizers](http://codeforces.com/problemset/problem/418/D)|Codeforces||RCC 2014 Warmup (Div. 1)|9|\n|<ul><li>- [ ] Done</li></ul>|262|[Game with Points](http://codeforces.com/problemset/problem/386/D)|Codeforces||Testing Round #9|9|\n|<ul><li>- [ ] Done</li></ul>|263|[Levko and Game](http://codeforces.com/problemset/problem/360/E)|Codeforces||Codeforces Round #210 (Div. 1)|9|\n|<ul><li>- [ ] Done</li></ul>|264|[Dima and Kicks](http://codeforces.com/problemset/problem/358/E)|Codeforces||Codeforces Round #208 (Div. 2)|9|\n|<ul><li>- [ ] Done</li></ul>|265|[Theft of Blueprints](http://codeforces.com/problemset/problem/332/D)|Codeforces||Codeforces Round #193 (Div. 2)|9|\n|<ul><li>- [ ] Done</li></ul>|266|[Pairs](http://codeforces.com/problemset/problem/81/E)|Codeforces||Yandex.Algorithm Open 2011 Qualification 1|9|\n|<ul><li>- [ ] Done</li></ul>|267|[Travelling Through the Snow Queen's Kingdom](http://codeforces.com/problemset/problem/685/E)|Codeforces||Codeforces Round #359 (Div. 1)|9|\n|<ul><li>- [ ] Done</li></ul>|268|[Mister B and Flight to the Moon](http://codeforces.com/problemset/problem/819/E)|Codeforces||Codeforces Round #421 (Div. 1)|9|\n|<ul><li>- [ ] Done</li></ul>|269|[Sagheer and Kindergarten](http://codeforces.com/problemset/problem/812/D)|Codeforces||Codeforces Round #417 (Div. 2)|9|\n|<ul><li>- [ ] Done</li></ul>|270|[Mike and code of a permutation](http://codeforces.com/problemset/problem/798/E)|Codeforces||Codeforces Round #410 (Div. 2)|9|\n|<ul><li>- [ ] Done</li></ul>|271|[DFS](http://codeforces.com/problemset/problem/1044/F)|Codeforces||Lyft Level 5 Challenge 2018 - Final Round|9|\n|<ul><li>- [ ] Done</li></ul>|272|[Doe Graphs](http://codeforces.com/problemset/problem/232/C)|Codeforces||Codeforces Round #144 (Div. 1) & Codeforces Round #144 (Div. 2)|10|\n|<ul><li>- [ ] Done</li></ul>|273|[Planar Graph](http://codeforces.com/problemset/problem/223/E)|Codeforces||Codeforces Round #138 (Div. 1)|10|\n|<ul><li>- [ ] Done</li></ul>|274|[Spider](http://codeforces.com/problemset/problem/223/D)|Codeforces||Codeforces Round #138 (Div. 1)|10|\n|<ul><li>- [ ] Done</li></ul>|275|[Privatization](http://codeforces.com/problemset/problem/212/A)|Codeforces||VK Cup 2012 Finals (unofficial online-version)|10|\n|<ul><li>- [ ] Done</li></ul>|276|[Gnomes of Might and Magic](http://codeforces.com/problemset/problem/175/F)|Codeforces||Codeforces Round #115|10|\n|<ul><li>- [ ] Done</li></ul>|277|[Leaders](http://codeforces.com/problemset/problem/97/E)|Codeforces||Yandex.Algorithm 2011 Finals|10|\n|<ul><li>- [ ] Done</li></ul>|278|[Road Problem](http://codeforces.com/problemset/problem/45/H)|Codeforces||School Team Contest #3 (Winter Computer School 2010/11)|10|\n|<ul><li>- [ ] Done</li></ul>|279|[Baldman and the military](http://codeforces.com/problemset/problem/42/E)|Codeforces||Codeforces Beta Round #41|10|\n|<ul><li>- [ ] Done</li></ul>|280|[Bear and Chemistry](http://codeforces.com/problemset/problem/639/F)|Codeforces||VK Cup 2016 - Round 1|10|\n|<ul><li>- [ ] Done</li></ul>|281|[Island Puzzle](http://codeforces.com/problemset/problem/627/F)|Codeforces||8VC Venture Cup 2016 - Final Round|10|\n|<ul><li>- [ ] Done</li></ul>|282|[Chain Letter](http://codeforces.com/problemset/problem/345/D)|Codeforces||Friday the 13th, Programmers Day|10|\n|<ul><li>- [ ] Done</li></ul>|283|[Deja Vu](http://codeforces.com/problemset/problem/331/E1)|Codeforces||ABBYY Cup 3.0 - Finals (online version)|10|\n|<ul><li>- [ ] Done</li></ul>|284|[Escaping on Beaveractor](http://codeforces.com/problemset/problem/331/D2)|Codeforces||ABBYY Cup 3.0 - Finals (online version)|10|\n|<ul><li>- [ ] Done</li></ul>|285|[Greedy Petya](http://codeforces.com/problemset/problem/290/F)|Codeforces||April Fools Day Contest 2013|10|\n|<ul><li>- [ ] Done</li></ul>|286|[BerPaint](http://codeforces.com/problemset/problem/44/F)|Codeforces||School Team Contest #2 (Winter Computer School 2010/11)|10|\n|<ul><li>- [ ] Done</li></ul>|287|[Dynamic Programming](p?ID=410)|A2 Online Judge|||10|\n|<ul><li>- [ ] Done</li></ul>|288|[Shake It!](http://codeforces.com/problemset/problem/848/D)|Codeforces||Codeforces Round #431 (Div. 1)|10|\n|<ul><li>- [ ] Done</li></ul>|289|[ALT](http://codeforces.com/problemset/problem/786/E)|Codeforces||Codeforces Round #406 (Div. 1)|10|\n|<ul><li>- [ ] Done</li></ul>|290|[Restore the Tree](http://codeforces.com/problemset/problem/871/E)|Codeforces||Codeforces Round #440 (Div. 1, based on Technocup 2018 Elimination Round 2)|10|\n|<ul><li>- [ ] Done</li></ul>|291|[The Overdosing Ubiquity](http://codeforces.com/problemset/problem/869/D)|Codeforces||Codeforces Round #439 (Div. 2)|10|\n"
  },
  {
    "path": "categories/017. Geometry/README.md",
    "content": "# 017. Geometry\n\n\n| Checkbox | ID | Problem Name|Online Judge|Year|Contest|Difficulty Level|\n|:---:|:---:|:---:|:---:|:---:|:---:|:---:|\n|<ul><li>- [ ] Done</li></ul>|1|[Equipment Box](http://www.spoj.com/problems/EQBOX/)|SPOJ|||1|\n|<ul><li>- [ ] Done</li></ul>|2|[Triangle From Centroid](http://www.spoj.com/problems/TRICENTR/)|SPOJ|||1|\n|<ul><li>- [ ] Done</li></ul>|3|[One Geometry Problem](http://www.spoj.com/problems/GEOPROB/)|SPOJ|||1|\n|<ul><li>- [ ] Done</li></ul>|4|[Maximal Quadrilateral Area](http://www.spoj.com/problems/QUADAREA/)|SPOJ|||1|\n|<ul><li>- [ ] Done</li></ul>|5|[Sphere in a tetrahedron](http://www.spoj.com/problems/TETRA/)|SPOJ|||1|\n|<ul><li>- [ ] Done</li></ul>|6|[Lifting the Stone](http://www.spoj.com/problems/STONE/)|SPOJ|||1|\n|<ul><li>- [ ] Done</li></ul>|7|[Triangle](http://codeforces.com/problemset/problem/6/A)|Codeforces||Codeforces Beta Round #6 (Div. 2 Only)|1|\n|<ul><li>- [ ] Done</li></ul>|8|[Fancy Fence](http://codeforces.com/problemset/problem/270/A)|Codeforces||Codeforces Round #165 (Div. 2)|1|\n|<ul><li>- [ ] Done</li></ul>|9|[Amr and Pins](http://codeforces.com/problemset/problem/507/B)|Codeforces||Codeforces Round #287 (Div. 2)|1|\n|<ul><li>- [ ] Done</li></ul>|10|[Han Solo and Lazer Gun](http://codeforces.com/problemset/problem/514/B)|Codeforces||Codeforces Round #291 (Div. 2)|1|\n|<ul><li>- [ ] Done</li></ul>|11|[Currency System in Geraldion](http://codeforces.com/problemset/problem/560/A)|Codeforces||Codeforces Round #313 (Div. 2)|1|\n|<ul><li>- [ ] Done</li></ul>|12|[Colourful Flowers](https://uva.onlinejudge.org/index.php?option=onlinejudge&page=show_problem&problem=2093)|UVA|||1|\n|<ul><li>- [ ] Done</li></ul>|13|[Is This Integration ?](https://uva.onlinejudge.org/index.php?option=onlinejudge&page=show_problem&problem=1150)|UVA|||1|\n|<ul><li>- [ ] Done</li></ul>|14|[The Grazing Cow](https://uva.onlinejudge.org/index.php?option=onlinejudge&page=show_problem&problem=1619)|UVA|||1|\n|<ul><li>- [ ] Done</li></ul>|15|[Carmichael Numbers](https://uva.onlinejudge.org/index.php?option=onlinejudge&page=show_problem&problem=947)|UVA|||1|\n|<ul><li>- [ ] Done</li></ul>|16|[Gerald's Hexagon](http://codeforces.com/problemset/problem/559/A)|Codeforces||Codeforces Round #313 (Div. 1) & Codeforces Round #313 (Div. 2)|1|\n|<ul><li>- [ ] Done</li></ul>|17|[Julka](http://www.spoj.com/problems/JULKA/)|SPOJ|||1|\n|<ul><li>- [ ] Done</li></ul>|18|[Beru-taxi](http://codeforces.com/problemset/problem/706/A)|Codeforces||Codeforces Round #367 (Div. 2)|1|\n|<ul><li>- [ ] Done</li></ul>|19|[Gleb And Pizza](http://codeforces.com/problemset/problem/842/B)|Codeforces||Codeforces Round #430 (Div. 2)|1|\n|<ul><li>- [ ] Done</li></ul>|20|[Mahmoud and a Triangle](http://codeforces.com/problemset/problem/766/B)|Codeforces||Codeforces Round #396 (Div. 2)|1|\n|<ul><li>- [ ] Done</li></ul>|21|[Trace](http://codeforces.com/problemset/problem/157/B)|Codeforces||Codeforces Round #110 (Div. 2)|2|\n|<ul><li>- [ ] Done</li></ul>|22|[Wasted Time](http://codeforces.com/problemset/problem/127/A)|Codeforces||Codeforces Beta Round #93 (Div. 2 Only)|2|\n|<ul><li>- [ ] Done</li></ul>|23|[The Ant](http://www.spoj.com/problems/ANTTT/)|SPOJ|||2|\n|<ul><li>- [ ] Done</li></ul>|24|[Goal for Raúl](http://www.spoj.com/problems/GOALFR/)|SPOJ|||2|\n|<ul><li>- [ ] Done</li></ul>|25|[Doors and Penguins](https://icpcarchive.ecs.baylor.edu/index.php?option=onlinejudge&page=show_problem&problem=1582)|Live Archive|2006|North America - Mid-Atlantic USA & North America - Rocky Mountain|2|\n|<ul><li>- [ ] Done</li></ul>|26|[Area](http://acm.tju.edu.cn/toj/showp1011.html)|TJU|||2|\n|<ul><li>- [ ] Done</li></ul>|27|[Land Acquisition](http://www.spoj.com/problems/ACQUIRE/)|SPOJ|||2|\n|<ul><li>- [ ] Done</li></ul>|28|[Pipe](http://poj.org/problem?id=1039)|PKU|||2|\n|<ul><li>- [ ] Done</li></ul>|29|[Handball](https://uva.onlinejudge.org/index.php?option=onlinejudge&page=show_problem&problem=4663)|UVA|||2|\n|<ul><li>- [ ] Done</li></ul>|30|[Sunny Mountains](https://uva.onlinejudge.org/index.php?option=onlinejudge&page=show_problem&problem=861)|UVA|||2|\n|<ul><li>- [ ] Done</li></ul>|31|[Area](https://uva.onlinejudge.org/index.php?option=onlinejudge&page=show_problem&problem=1530)|UVA|||2|\n|<ul><li>- [ ] Done</li></ul>|32|[Beavergnaw](https://uva.onlinejudge.org/index.php?option=onlinejudge&page=show_problem&problem=1238)|UVA|||2|\n|<ul><li>- [ ] Done</li></ul>|33|[Convex Hull Finding](https://uva.onlinejudge.org/index.php?option=onlinejudge&page=show_problem&problem=622)|UVA|||2|\n|<ul><li>- [ ] Done</li></ul>|34|[Railway](https://uva.onlinejudge.org/index.php?option=onlinejudge&page=show_problem&problem=1204)|UVA|||2|\n|<ul><li>- [ ] Done</li></ul>|35|[Packing polygons](https://uva.onlinejudge.org/index.php?option=onlinejudge&page=show_problem&problem=946)|UVA|||2|\n|<ul><li>- [ ] Done</li></ul>|36|[Colourful Flowers](https://www.urionlinejudge.com.br/judge/en/problems/view/1219)|URI|||2|\n|<ul><li>- [ ] Done</li></ul>|37|[Soya Milk](https://uva.onlinejudge.org/index.php?option=onlinejudge&page=show_problem&problem=3060)|UVA|||2|\n|<ul><li>- [ ] Done</li></ul>|38|[Overlapping Rectangles](https://uva.onlinejudge.org/index.php?option=onlinejudge&page=show_problem&problem=401)|UVA|||2|\n|<ul><li>- [ ] Done</li></ul>|39|[The easiest way](https://uva.onlinejudge.org/index.php?option=onlinejudge&page=show_problem&problem=2148)|UVA|||2|\n|<ul><li>- [ ] Done</li></ul>|40|[Elevator](https://www.urionlinejudge.com.br/judge/en/problems/view/1124)|URI|||2|\n|<ul><li>- [ ] Done</li></ul>|41|[Crazy Town](http://codeforces.com/problemset/problem/498/A)|Codeforces||Codeforces Round #284 (Div. 1) & Codeforces Round #284 (Div. 2)|2|\n|<ul><li>- [ ] Done</li></ul>|42|[Pouring Rain](http://codeforces.com/problemset/problem/667/A)|Codeforces||Codeforces Round #349 (Div. 2)|2|\n|<ul><li>- [ ] Done</li></ul>|43|[Parallelogram is Back](http://codeforces.com/problemset/problem/749/B)|Codeforces||Codeforces Round #388 (Div. 2)|2|\n|<ul><li>- [ ] Done</li></ul>|44|[Rings and Glue](https://uva.onlinejudge.org/index.php?option=onlinejudge&page=show_problem&problem=1242)|UVA|||2|\n|<ul><li>- [ ] Done</li></ul>|45|[Gleaming the Cubes](https://uva.onlinejudge.org/index.php?option=onlinejudge&page=show_problem&problem=678)|UVA|||2|\n|<ul><li>- [ ] Done</li></ul>|46|[I Conduit](http://www.spoj.com/problems/CONDUIT/)|SPOJ|||3|\n|<ul><li>- [ ] Done</li></ul>|47|[Geometry and a Square](http://www.spoj.com/problems/GEOM/)|SPOJ|||3|\n|<ul><li>- [ ] Done</li></ul>|48|[Area of circles](http://www.spoj.com/problems/VCIRCLES/)|SPOJ|||3|\n|<ul><li>- [ ] Done</li></ul>|49|[Air Strike](http://www.spoj.com/problems/ANARC09F/)|SPOJ|||3|\n|<ul><li>- [ ] Done</li></ul>|50|[New Year Table](http://codeforces.com/problemset/problem/140/A)|Codeforces||Codeforces Round #100|3|\n|<ul><li>- [ ] Done</li></ul>|51|[Calculate the Area](http://www.spoj.com/problems/CALCAREA/)|SPOJ|||3|\n|<ul><li>- [ ] Done</li></ul>|52|[Treasure Hunt](http://poj.org/problem?id=1066)|PKU|||3|\n|<ul><li>- [ ] Done</li></ul>|53|[Point on Spiral](http://codeforces.com/problemset/problem/279/A)|Codeforces||Codeforces Round #171 (Div. 2)|3|\n|<ul><li>- [ ] Done</li></ul>|54|[Athletics Track](https://uva.onlinejudge.org/index.php?option=onlinejudge&page=show_problem&problem=2693)|UVA|||3|\n|<ul><li>- [ ] Done</li></ul>|55|[Convex Hull](https://uva.onlinejudge.org/index.php?option=onlinejudge&page=show_problem&problem=2673)|UVA|||3|\n|<ul><li>- [ ] Done</li></ul>|56|[Gifts in a Hexagonal Box](https://uva.onlinejudge.org/index.php?option=onlinejudge&page=show_problem&problem=1228)|UVA|||3|\n|<ul><li>- [ ] Done</li></ul>|57|[Bright Lights](https://uva.onlinejudge.org/index.php?option=onlinejudge&page=show_problem&problem=1868)|UVA|||3|\n|<ul><li>- [ ] Done</li></ul>|58|[Bounding box](https://uva.onlinejudge.org/index.php?option=onlinejudge&page=show_problem&problem=1518)|UVA|||3|\n|<ul><li>- [ ] Done</li></ul>|59|[SPIRAL RUN](http://www.spoj.com/problems/SPIRAL2/)|SPOJ|||3|\n|<ul><li>- [ ] Done</li></ul>|60|[Bicycle Race](http://codeforces.com/problemset/problem/659/D)|Codeforces||Codeforces Round #346 (Div. 2)|3|\n|<ul><li>- [ ] Done</li></ul>|61|[Constellation](http://codeforces.com/problemset/problem/618/C)|Codeforces||Wunder Fund Round 2016 (Div. 1 + Div. 2 combined)|3|\n|<ul><li>- [ ] Done</li></ul>|62|[Anton and Lines](http://codeforces.com/problemset/problem/593/B)|Codeforces||Codeforces Round #329 (Div. 2)|3|\n|<ul><li>- [ ] Done</li></ul>|63|[A Problem about Polyline](http://codeforces.com/problemset/problem/578/A)|Codeforces||Codeforces Round #320 (Div. 1) [Bayan Thanks-Round] & Codeforces Round #320 (Div. 2) [Bayan Thanks-Round]|3|\n|<ul><li>- [ ] Done</li></ul>|64|[Coat of Anticubism](http://codeforces.com/problemset/problem/667/B)|Codeforces||Codeforces Round #349 (Div. 2)|3|\n|<ul><li>- [ ] Done</li></ul>|65|[Mister B and Angle in Polygon](http://codeforces.com/problemset/problem/820/B)|Codeforces||Codeforces Round #421 (Div. 2)|3|\n|<ul><li>- [ ] Done</li></ul>|66|[Arpa and an exam about geometry](http://codeforces.com/problemset/problem/851/B)|Codeforces||Codeforces Round #432 (Div. 2, based on IndiaHacks Final Round 2017)|3|\n|<ul><li>- [ ] Done</li></ul>|67|[Geometry Problem](https://icpcarchive.ecs.baylor.edu/index.php?option=onlinejudge&page=show_problem&problem=2677)|Live Archive|2009|Asia - Amritapuri|3|\n|<ul><li>- [ ] Done</li></ul>|68|[Magic Box](http://codeforces.com/problemset/problem/231/D)|Codeforces||Codeforces Round #143 (Div. 2)|4|\n|<ul><li>- [ ] Done</li></ul>|69|[Where do I Turn?](http://codeforces.com/problemset/problem/227/A)|Codeforces||Codeforces Round #140 (Div. 2)|4|\n|<ul><li>- [ ] Done</li></ul>|70|[Hopscotch](http://codeforces.com/problemset/problem/141/B)|Codeforces||Codeforces Round #101 (Div. 2)|4|\n|<ul><li>- [ ] Done</li></ul>|71|[Depression](http://codeforces.com/problemset/problem/80/B)|Codeforces||Codeforces Beta Round #69 (Div. 2 Only)|4|\n|<ul><li>- [ ] Done</li></ul>|72|[Triangle](http://codeforces.com/problemset/problem/18/A)|Codeforces||Codeforces Beta Round #18 (Div. 2 Only)|4|\n|<ul><li>- [ ] Done</li></ul>|73|[Running Student](http://codeforces.com/problemset/problem/9/B)|Codeforces||Codeforces Beta Round #9 (Div. 2 Only)|4|\n|<ul><li>- [ ] Done</li></ul>|74|[Ancient Berland Circus](http://codeforces.com/problemset/problem/1/C)|Codeforces||Codeforces Beta Round #1|4|\n|<ul><li>- [ ] Done</li></ul>|75|[Will Indiana Jones Get There](http://www.spoj.com/problems/WIJGT/)|SPOJ|||4|\n|<ul><li>- [ ] Done</li></ul>|76|[Face the mate](http://www.spoj.com/problems/FACENEMY/)|SPOJ|||4|\n|<ul><li>- [ ] Done</li></ul>|77|[Fence](http://poj.org/problem?id=1031)|PKU|||4|\n|<ul><li>- [ ] Done</li></ul>|78|[Captain Marmot](http://codeforces.com/problemset/problem/474/C)|Codeforces||Codeforces Round #271 (Div. 2)|4|\n|<ul><li>- [ ] Done</li></ul>|79|[Peter and Snow Blower](http://codeforces.com/problemset/problem/613/A)|Codeforces||Codeforces Round #339 (Div. 1) & Codeforces Round #339 (Div. 2)|4|\n|<ul><li>- [ ] Done</li></ul>|80|[Vanya and Triangles](http://codeforces.com/problemset/problem/552/D)|Codeforces||Codeforces Round #308 (Div. 2)|4|\n|<ul><li>- [ ] Done</li></ul>|81|[View Angle](http://codeforces.com/problemset/problem/257/C)|Codeforces||Codeforces Round #159 (Div. 2)|4|\n|<ul><li>- [ ] Done</li></ul>|82|[Buns](http://codeforces.com/problemset/problem/106/C)|Codeforces||Codeforces Beta Round #82 (Div. 2)|4|\n|<ul><li>- [ ] Done</li></ul>|83|[Tell Your World](http://codeforces.com/problemset/problem/849/B)|Codeforces||Codeforces Round #431 (Div. 2)|4|\n|<ul><li>- [ ] Done</li></ul>|84|[The Sultan's Problem](https://uva.onlinejudge.org/index.php?option=onlinejudge&page=show_problem&problem=2232)|UVA|||4|\n|<ul><li>- [ ] Done</li></ul>|85|[Chocolate Chip Cookies](https://uva.onlinejudge.org/index.php?option=onlinejudge&page=show_problem&problem=1077)|UVA|||4|\n|<ul><li>- [ ] Done</li></ul>|86|[The Teacher's Side of Math](https://icpcarchive.ecs.baylor.edu/index.php?option=onlinejudge&page=show_problem&problem=1892)|Live Archive|2007|Asia - Tokyo|4|\n|<ul><li>- [ ] Done</li></ul>|87|[Intersection of Two Prisms](https://icpcarchive.ecs.baylor.edu/index.php?option=onlinejudge&page=show_problem&problem=3076)|Live Archive|2010|Asia - Tokyo|4|\n|<ul><li>- [ ] Done</li></ul>|88|[Frontier](http://acm.timus.ru/problem.aspx?space=1&num=1065)|Timus|||4|\n|<ul><li>- [ ] Done</li></ul>|89|[Dog Distance](https://uva.onlinejudge.org/index.php?option=onlinejudge&page=show_problem&problem=2896)|UVA|||5|\n|<ul><li>- [ ] Done</li></ul>|90|[Surrounded](http://codeforces.com/problemset/problem/190/B)|Codeforces||Codeforces Round #120 (Div. 2)|5|\n|<ul><li>- [ ] Done</li></ul>|91|[Series of Crimes](http://codeforces.com/problemset/problem/181/A)|Codeforces||Croc Champ 2012 - Round 2 (Unofficial Div. 2 Edition)|5|\n|<ul><li>- [ ] Done</li></ul>|92|[Rectangle and Square](http://codeforces.com/problemset/problem/135/B)|Codeforces||Codeforces Beta Round #97 (Div. 1) & Codeforces Beta Round #97 (Div. 2)|5|\n|<ul><li>- [ ] Done</li></ul>|93|[Four Segments](http://codeforces.com/problemset/problem/14/C)|Codeforces||Codeforces Beta Round #14 (Div. 2)|5|\n|<ul><li>- [ ] Done</li></ul>|94|[Area in Triangle](http://poj.org/problem?id=1927)|PKU|||5|\n|<ul><li>- [ ] Done</li></ul>|95|[4-point polyline](http://codeforces.com/problemset/problem/452/B)|Codeforces||MemSQL Start[c]UP 2.0 - Round 1|5|\n|<ul><li>- [ ] Done</li></ul>|96|[Equilateral Triangle in a Triangle Grid](https://uva.onlinejudge.org/index.php?option=onlinejudge&page=show_problem&problem=4355)|UVA|||5|\n|<ul><li>- [ ] Done</li></ul>|97|[Number of Parallelograms](http://codeforces.com/problemset/problem/660/D)|Codeforces||Educational Codeforces Round 11|5|\n|<ul><li>- [ ] Done</li></ul>|98|[Nearest vectors](http://codeforces.com/problemset/problem/598/C)|Codeforces||Educational Codeforces Round 1|5|\n|<ul><li>- [ ] Done</li></ul>|99|[Chip 'n Dale Rescue Rangers](http://codeforces.com/problemset/problem/590/B)|Codeforces||Codeforces Round #327 (Div. 1) & Codeforces Round #327 (Div. 2)|5|\n|<ul><li>- [ ] Done</li></ul>|100|[Points on Plane](http://codeforces.com/problemset/problem/576/C)|Codeforces||Codeforces Round #319 (Div. 1) & Codeforces Round #319 (Div. 2)|5|\n|<ul><li>- [ ] Done</li></ul>|101|[Restore Cube ](http://codeforces.com/problemset/problem/464/B)|Codeforces||Codeforces Round #265 (Div. 1)|5|\n|<ul><li>- [ ] Done</li></ul>|102|[Tricky Function](http://codeforces.com/problemset/problem/429/D)|Codeforces||Codeforces Round #245 (Div. 1)|5|\n|<ul><li>- [ ] Done</li></ul>|103|[Cupboard and Balloons](http://codeforces.com/problemset/problem/342/C)|Codeforces||Codeforces Round #199 (Div. 2)|5|\n|<ul><li>- [ ] Done</li></ul>|104|[Kalila and Dimna in the Logging Industry](http://codeforces.com/problemset/problem/319/C)|Codeforces||Codeforces Round #189 (Div. 1) & Codeforces Round #189 (Div. 2)|5|\n|<ul><li>- [ ] Done</li></ul>|105|[An overnight dance in discotheque](http://codeforces.com/problemset/problem/814/D)|Codeforces||Codeforces Round #418 (Div. 2)|5|\n|<ul><li>- [ ] Done</li></ul>|106|[Nature Reserve](http://codeforces.com/problemset/problem/1059/D)|Codeforces||Codeforces Round #514 (Div. 2)|5|\n|<ul><li>- [ ] Done</li></ul>|107|[All Souls Night](https://uva.onlinejudge.org/index.php?option=onlinejudge&page=show_problem&problem=2869)|UVA|||6|\n|<ul><li>- [ ] Done</li></ul>|108|[Hit Ball](http://codeforces.com/problemset/problem/203/D)|Codeforces||Codeforces Round #128 (Div. 2)|6|\n|<ul><li>- [ ] Done</li></ul>|109|[Polygons](http://codeforces.com/problemset/problem/166/B)|Codeforces||Codeforces Round #113 (Div. 2)|6|\n|<ul><li>- [ ] Done</li></ul>|110|[Shooting Gallery](http://codeforces.com/problemset/problem/30/C)|Codeforces||Codeforces Beta Round #30 (Codeforces format)|6|\n|<ul><li>- [ ] Done</li></ul>|111|[Maximal Area Quadrilateral](http://codeforces.com/problemset/problem/340/B)|Codeforces||Codeforces Round #198 (Div. 2)|6|\n|<ul><li>- [ ] Done</li></ul>|112|[Heavy Disc](http://acm.sgu.ru/problem.php?contest=0&problem=417)|SGU|||6|\n|<ul><li>- [ ] Done</li></ul>|113|[Area of Two Circles' Intersection](http://codeforces.com/problemset/problem/600/D)|Codeforces||Educational Codeforces Round 2|6|\n|<ul><li>- [ ] Done</li></ul>|114|[Rectangle Puzzle](http://codeforces.com/problemset/problem/280/A)|Codeforces||Codeforces Round #172 (Div. 1) & Codeforces Round #172 (Div. 2)|6|\n|<ul><li>- [ ] Done</li></ul>|115|[Ada and Cucumber](http://www.spoj.com/problems/ADAPICK/)|SPOJ|||6|\n|<ul><li>- [ ] Done</li></ul>|116|[Rooter's Song](http://codeforces.com/problemset/problem/848/B)|Codeforces||Codeforces Round #431 (Div. 1) & Codeforces Round #431 (Div. 2)|6|\n|<ul><li>- [ ] Done</li></ul>|117|[Chris and Road](http://codeforces.com/problemset/problem/703/C)|Codeforces||Codeforces Round #365 (Div. 2)|6|\n|<ul><li>- [ ] Done</li></ul>|118|[Fighting Against a Polygonal Monster](https://uva.onlinejudge.org/index.php?option=onlinejudge&page=show_problem&problem=2118)|UVA|||6|\n|<ul><li>- [ ] Done</li></ul>|119|[Tower for Cellular Telephony](https://uva.onlinejudge.org/index.php?option=onlinejudge&page=show_problem&problem=2728)|UVA|||6|\n|<ul><li>- [ ] Done</li></ul>|120|[Hail](http://acm.timus.ru/problem.aspx?space=1&num=1317)|Timus|||6|\n|<ul><li>- [ ] Done</li></ul>|121|[Cutting a Polygon](https://uva.onlinejudge.org/index.php?option=onlinejudge&page=show_problem&problem=1808)|UVA|||6|\n|<ul><li>- [ ] Done</li></ul>|122|[Device](http://acm.timus.ru/problem.aspx?space=1&num=1341)|Timus|||6|\n|<ul><li>- [ ] Done</li></ul>|123|[Building Bridge](http://codeforces.com/problemset/problem/250/D)|Codeforces||CROC-MBTU 2012, Final Round (Online version, Div. 2)|7|\n|<ul><li>- [ ] Done</li></ul>|124|[Robo-Footballer](http://codeforces.com/problemset/problem/248/C)|Codeforces||Codeforces Round #152 (Div. 2) & Codeforces Round #152 (Div. 1)|7|\n|<ul><li>- [ ] Done</li></ul>|125|[Paint Tree](http://codeforces.com/problemset/problem/196/C)|Codeforces||Codeforces Round #124 (Div. 1) & Codeforces Round #124 (Div. 2)|7|\n|<ul><li>- [ ] Done</li></ul>|126|[Minimum Sum](http://codeforces.com/problemset/problem/120/J)|Codeforces||School Regional Team Contest, Saratov, 2011|7|\n|<ul><li>- [ ] Done</li></ul>|127|[Harry Potter and the Golden Snitch](http://codeforces.com/problemset/problem/65/C)|Codeforces||Codeforces Beta Round #60|7|\n|<ul><li>- [ ] Done</li></ul>|128|[Knights](http://codeforces.com/problemset/problem/33/D)|Codeforces||Codeforces Beta Round #33 (Codeforces format)|7|\n|<ul><li>- [ ] Done</li></ul>|129|[Sequence of points](http://codeforces.com/problemset/problem/24/C)|Codeforces||Codeforces Beta Round #24|7|\n|<ul><li>- [ ] Done</li></ul>|130|[Commentator problem](http://codeforces.com/problemset/problem/2/C)|Codeforces||Codeforces Beta Round #2|7|\n|<ul><li>- [ ] Done</li></ul>|131|[A Square and Equilateral Triangles](https://uva.onlinejudge.org/index.php?option=onlinejudge&page=show_problem&problem=1230)|UVA|||7|\n|<ul><li>- [ ] Done</li></ul>|132|[Product Sum](http://codeforces.com/problemset/problem/631/E)|Codeforces||Codeforces Round #344 (Div. 2)|7|\n|<ul><li>- [ ] Done</li></ul>|133|[Pyramids](http://codeforces.com/problemset/problem/630/Q)|Codeforces||Experimental Educational Round: VolBIT Formulas Blitz|7|\n|<ul><li>- [ ] Done</li></ul>|134|[Turn](http://codeforces.com/problemset/problem/630/M)|Codeforces||Experimental Educational Round: VolBIT Formulas Blitz|7|\n|<ul><li>- [ ] Done</li></ul>|135|[Vika and Segments](http://codeforces.com/problemset/problem/610/D)|Codeforces||Codeforces Round #337 (Div. 2)|7|\n|<ul><li>- [ ] Done</li></ul>|136|[Freelancer's Dreams](http://codeforces.com/problemset/problem/605/C)|Codeforces||Codeforces Round #335 (Div. 1) & Codeforces Round #335 (Div. 2)|7|\n|<ul><li>- [ ] Done</li></ul>|137|[Tavas and Pashmaks](http://codeforces.com/problemset/problem/535/E)|Codeforces||Codeforces Round #299 (Div. 2) & Codeforces Round #299 (Div. 1)|7|\n|<ul><li>- [ ] Done</li></ul>|138|[Hill Climbing](http://codeforces.com/problemset/problem/406/D)|Codeforces||Codeforces Round #238 (Div. 1)|7|\n|<ul><li>- [ ] Done</li></ul>|139|[Set of Points](http://codeforces.com/problemset/problem/277/B)|Codeforces||Codeforces Round #170 (Div. 1) & Codeforces Round #170 (Div. 2)|7|\n|<ul><li>- [ ] Done</li></ul>|140|[Mirror](http://acm.timus.ru/problem.aspx?space=1&num=1265)|Timus|||7|\n|<ul><li>- [ ] Done</li></ul>|141|[Fireball](http://acm.timus.ru/problem.aspx?space=1&num=1328)|Timus|||7|\n|<ul><li>- [ ] Done</li></ul>|142|[Special Olympics](http://codeforces.com/problemset/problem/199/B)|Codeforces||Codeforces Round #125 (Div. 2)|8|\n|<ul><li>- [ ] Done</li></ul>|143|[Zoo](http://codeforces.com/problemset/problem/183/B)|Codeforces||Croc Champ 2012 - Final|8|\n|<ul><li>- [ ] Done</li></ul>|144|[Space Rescuers](http://codeforces.com/problemset/problem/106/E)|Codeforces||Codeforces Beta Round #82 (Div. 2)|8|\n|<ul><li>- [ ] Done</li></ul>|145|[Igloo Skyscraper](http://codeforces.com/problemset/problem/91/E)|Codeforces||Codeforces Beta Round #75 (Div. 1 Only)|8|\n|<ul><li>- [ ] Done</li></ul>|146|[Guard Towers](http://codeforces.com/problemset/problem/85/E)|Codeforces||Yandex.Algorithm 2011 Round 1|8|\n|<ul><li>- [ ] Done</li></ul>|147|[Professor's task](http://codeforces.com/problemset/problem/70/D)|Codeforces||Codeforces Beta Round #64|8|\n|<ul><li>- [ ] Done</li></ul>|148|[Very simple problem](http://codeforces.com/problemset/problem/55/E)|Codeforces||Codeforces Beta Round #51|8|\n|<ul><li>- [ ] Done</li></ul>|149|[Happy Farm 5](http://codeforces.com/problemset/problem/50/C)|Codeforces||Codeforces Beta Round #47|8|\n|<ul><li>- [ ] Done</li></ul>|150|[Triangles](http://codeforces.com/problemset/problem/13/D)|Codeforces||Codeforces Beta Round #13|8|\n|<ul><li>- [ ] Done</li></ul>|151|[Letter A](http://codeforces.com/problemset/problem/13/B)|Codeforces||Codeforces Beta Round #13|8|\n|<ul><li>- [ ] Done</li></ul>|152|[Two Friends](http://codeforces.com/problemset/problem/8/D)|Codeforces||Codeforces Beta Round #8|8|\n|<ul><li>- [ ] Done</li></ul>|153|[Cookie](https://uva.onlinejudge.org/index.php?option=onlinejudge&page=show_problem&problem=3959)|UVA|||8|\n|<ul><li>- [ ] Done</li></ul>|154|[Hide and seek](https://uva.onlinejudge.org/index.php?option=onlinejudge&page=show_problem&problem=4413)|UVA|||8|\n|<ul><li>- [ ] Done</li></ul>|155|[Deformed Wheel](http://poj.org/problem?id=1070)|PKU|||8|\n|<ul><li>- [ ] Done</li></ul>|156|[Mirror Box](http://codeforces.com/problemset/problem/241/C)|Codeforces||Bayan 2012-2013 Elimination Round (ACM ICPC Rules, English statements)|8|\n|<ul><li>- [ ] Done</li></ul>|157|[Bear and Bowling 4](http://codeforces.com/problemset/problem/660/F)|Codeforces||Educational Codeforces Round 11|8|\n|<ul><li>- [ ] Done</li></ul>|158|[Area of a Star](http://codeforces.com/problemset/problem/630/P)|Codeforces||Experimental Educational Round: VolBIT Formulas Blitz|8|\n|<ul><li>- [ ] Done</li></ul>|159|[Arrow](http://codeforces.com/problemset/problem/630/O)|Codeforces||Experimental Educational Round: VolBIT Formulas Blitz|8|\n|<ul><li>- [ ] Done</li></ul>|160|[Max and Bike](http://codeforces.com/problemset/problem/594/B)|Codeforces||Codeforces Round #330 (Div. 1) & Codeforces Round #330 (Div. 2)|8|\n|<ul><li>- [ ] Done</li></ul>|161|[Bear and Floodlight](http://codeforces.com/problemset/problem/385/D)|Codeforces||Codeforces Round #226 (Div. 2)|8|\n|<ul><li>- [ ] Done</li></ul>|162|[Summer Earnings](http://codeforces.com/problemset/problem/333/E)|Codeforces||Codeforces Round #194 (Div. 1)|8|\n|<ul><li>- [ ] Done</li></ul>|163|[Sereja and Straight Lines](http://codeforces.com/problemset/problem/314/D)|Codeforces||Codeforces Round #187 (Div. 1)|8|\n|<ul><li>- [ ] Done</li></ul>|164|[The Child and Polygon](http://codeforces.com/problemset/problem/437/E)|Codeforces||Codeforces Round #250 (Div. 2) & Codeforces Round #250 (Div. 1)|8|\n|<ul><li>- [ ] Done</li></ul>|165|[Alyona and Triangles](http://codeforces.com/problemset/problem/682/E)|Codeforces||Codeforces Round #358 (Div. 2)|8|\n|<ul><li>- [ ] Done</li></ul>|166|[Cheese](http://acm.timus.ru/problem.aspx?space=1&num=1583)|Timus|||8|\n|<ul><li>- [ ] Done</li></ul>|167|[Chapaev](http://acm.timus.ru/problem.aspx?space=1&num=1163)|Timus|||8|\n|<ul><li>- [ ] Done</li></ul>|168|[Good Manners](http://acm.timus.ru/problem.aspx?space=1&num=1504)|Timus|||8|\n|<ul><li>- [ ] Done</li></ul>|169|[National Park](http://acm.timus.ru/problem.aspx?space=1&num=1514)|Timus|||8|\n|<ul><li>- [ ] Done</li></ul>|170|[Kill the Shaitan-Boss](http://acm.timus.ru/problem.aspx?space=1&num=1719)|Timus|||8|\n|<ul><li>- [ ] Done</li></ul>|171|[Stars](http://codeforces.com/problemset/problem/213/D)|Codeforces||Codeforces Round #131 (Div. 1)|9|\n|<ul><li>- [ ] Done</li></ul>|172|[Delivering Carcinogen](http://codeforces.com/problemset/problem/198/C)|Codeforces||Codeforces Round #125 (Div. 1) & Codeforces Round #125 (Div. 2)|9|\n|<ul><li>- [ ] Done</li></ul>|173|[Battlefield](http://codeforces.com/problemset/problem/182/A)|Codeforces||Codeforces Round #117 (Div. 2)|9|\n|<ul><li>- [ ] Done</li></ul>|174|[New Year Snowflake](http://codeforces.com/problemset/problem/140/F)|Codeforces||Codeforces Round #100|9|\n|<ul><li>- [ ] Done</li></ul>|175|[Rotation](http://codeforces.com/problemset/problem/100/I)|Codeforces||Unknown Language Round #3|9|\n|<ul><li>- [ ] Done</li></ul>|176|[Help Greg the Dwarf](http://codeforces.com/problemset/problem/98/C)|Codeforces||Codeforces Beta Round #78 (Div. 1 Only) & Codeforces Beta Round #78 (Div. 2 Only)|9|\n|<ul><li>- [ ] Done</li></ul>|177|[Space mines](http://codeforces.com/problemset/problem/89/D)|Codeforces||Codeforces Beta Round #74 (Div. 1 Only)|9|\n|<ul><li>- [ ] Done</li></ul>|178|[Corridor](http://codeforces.com/problemset/problem/82/E)|Codeforces||Yandex.Algorithm 2011 Qualification 2|9|\n|<ul><li>- [ ] Done</li></ul>|179|[Archer's Shot](http://codeforces.com/problemset/problem/78/D)|Codeforces||Codeforces Beta Round #70 (Div. 2)|9|\n|<ul><li>- [ ] Done</li></ul>|180|[Martian Food](http://codeforces.com/problemset/problem/77/E)|Codeforces||Codeforces Beta Round #69 (Div. 1 Only)|9|\n|<ul><li>- [ ] Done</li></ul>|181|[Ship's Shortest Path](http://codeforces.com/problemset/problem/75/E)|Codeforces||Codeforces Beta Round #67 (Div. 2)|9|\n|<ul><li>- [ ] Done</li></ul>|182|[Save the City!](http://codeforces.com/problemset/problem/67/E)|Codeforces||Manthan 2011|9|\n|<ul><li>- [ ] Done</li></ul>|183|[Inquisition](http://codeforces.com/problemset/problem/62/C)|Codeforces||Codeforces Beta Round #58|9|\n|<ul><li>- [ ] Done</li></ul>|184|[Cannon](http://codeforces.com/problemset/problem/47/E)|Codeforces||Codeforces Beta Round #44 (Div. 2)|9|\n|<ul><li>- [ ] Done</li></ul>|185|[Bowls](http://codeforces.com/problemset/problem/36/C)|Codeforces||Codeforces Beta Round #36|9|\n|<ul><li>- [ ] Done</li></ul>|186|[Hide-and-Seek](http://codeforces.com/problemset/problem/32/E)|Codeforces||Codeforces Beta Round #32 (Div. 2, Codeforces format)|9|\n|<ul><li>- [ ] Done</li></ul>|187|[King's Problem?](http://codeforces.com/problemset/problem/30/D)|Codeforces||Codeforces Beta Round #30 (Codeforces format)|9|\n|<ul><li>- [ ] Done</li></ul>|188|[Tetragon](http://codeforces.com/problemset/problem/23/D)|Codeforces||Codeforces Beta Round #23|9|\n|<ul><li>- [ ] Done</li></ul>|189|[3D Geometry](p?ID=406)|A2 Online Judge|||9|\n|<ul><li>- [ ] Done</li></ul>|190|[Ruminations on Ruminants](http://codeforces.com/problemset/problem/603/D)|Codeforces||Codeforces Round #334 (Div. 1)|9|\n|<ul><li>- [ ] Done</li></ul>|191|[Max and Min](http://codeforces.com/problemset/problem/566/G)|Codeforces||VK Cup 2015 - Finals, online mirror|9|\n|<ul><li>- [ ] Done</li></ul>|192|[Randomizer](http://codeforces.com/problemset/problem/559/D)|Codeforces||Codeforces Round #313 (Div. 1)|9|\n|<ul><li>- [ ] Done</li></ul>|193|[Roland and Rose](http://codeforces.com/problemset/problem/460/E)|Codeforces||Codeforces Round #262 (Div. 2)|9|\n|<ul><li>- [ ] Done</li></ul>|194|[New Year Tree Decorations](http://codeforces.com/problemset/problem/379/E)|Codeforces||Good Bye 2013|9|\n|<ul><li>- [ ] Done</li></ul>|195|[Ksusha and Square](http://codeforces.com/problemset/problem/293/D)|Codeforces||Croc Champ 2013 - Round 2|9|\n|<ul><li>- [ ] Done</li></ul>|196|[The Last Hole!](http://codeforces.com/problemset/problem/274/C)|Codeforces||Codeforces Round #168 (Div. 1) & Codeforces Round #168 (Div. 2)|9|\n|<ul><li>- [ ] Done</li></ul>|197|[Little Elephant and Triangle](http://codeforces.com/problemset/problem/220/D)|Codeforces||Codeforces Round #136 (Div. 1)|9|\n|<ul><li>- [ ] Done</li></ul>|198|[Runaway to a Shadow](http://codeforces.com/problemset/problem/681/E)|Codeforces||Codeforces Round #357 (Div. 2)|9|\n|<ul><li>- [ ] Done</li></ul>|199|[Mouse](http://acm.timus.ru/problem.aspx?space=1&num=1199)|Timus|||9|\n|<ul><li>- [ ] Done</li></ul>|200|[Intersect Until You're Sick of It](http://acm.timus.ru/problem.aspx?space=1&num=2036)|Timus|||9|\n|<ul><li>- [ ] Done</li></ul>|201|[Light](http://acm.timus.ru/problem.aspx?space=1&num=1464)|Timus|||9|\n|<ul><li>- [ ] Done</li></ul>|202|[Karen and Cards](http://codeforces.com/problemset/problem/815/D)|Codeforces||Codeforces Round #419 (Div. 1)|9|\n|<ul><li>- [ ] Done</li></ul>|203|[Goat in the Garden 4](http://acm.timus.ru/problem.aspx?space=1&num=1384)|Timus|||9|\n|<ul><li>- [ ] Done</li></ul>|204|[Wires](http://acm.timus.ru/problem.aspx?space=1&num=1460)|Timus|||9|\n|<ul><li>- [ ] Done</li></ul>|205|[Triangle Game 2](http://acm.timus.ru/problem.aspx?space=1&num=1637)|Timus|||9|\n|<ul><li>- [ ] Done</li></ul>|206|[Triangle Game](http://acm.timus.ru/problem.aspx?space=1&num=1482)|Timus|||9|\n|<ul><li>- [ ] Done</li></ul>|207|[Biscuits](http://acm.timus.ru/problem.aspx?space=1&num=1429)|Timus|||9|\n|<ul><li>- [ ] Done</li></ul>|208|[Empire Strikes Back](http://acm.timus.ru/problem.aspx?space=1&num=1520)|Timus|||9|\n|<ul><li>- [ ] Done</li></ul>|209|[The Mentaculus](http://acm.timus.ru/problem.aspx?space=1&num=1839)|Timus|||9|\n|<ul><li>- [ ] Done</li></ul>|210|[Fire Signals](http://acm.timus.ru/problem.aspx?space=1&num=1956)|Timus|||9|\n|<ul><li>- [ ] Done</li></ul>|211|[Non-Flying Weather](http://acm.timus.ru/problem.aspx?space=1&num=1894)|Timus|||9|\n|<ul><li>- [ ] Done</li></ul>|212|[Cubes](http://codeforces.com/problemset/problem/243/D)|Codeforces||Codeforces Round #150 (Div. 1)|10|\n|<ul><li>- [ ] Done</li></ul>|213|[Planar Graph](http://codeforces.com/problemset/problem/223/E)|Codeforces||Codeforces Round #138 (Div. 1)|10|\n|<ul><li>- [ ] Done</li></ul>|214|[Spider](http://codeforces.com/problemset/problem/223/D)|Codeforces||Codeforces Round #138 (Div. 1)|10|\n|<ul><li>- [ ] Done</li></ul>|215|[Martian Colony](http://codeforces.com/problemset/problem/154/E)|Codeforces||Codeforces Round #109 (Div. 1)|10|\n|<ul><li>- [ ] Done</li></ul>|216|[Help Greg the Dwarf 2](http://codeforces.com/problemset/problem/142/E)|Codeforces||Codeforces Round #102 (Div. 1)|10|\n|<ul><li>- [ ] Done</li></ul>|217|[Birthday](http://codeforces.com/problemset/problem/128/E)|Codeforces||Codeforces Beta Round #94 (Div. 1 Only)|10|\n|<ul><li>- [ ] Done</li></ul>|218|[Alternative Reality](http://codeforces.com/problemset/problem/119/E)|Codeforces||Codeforces Beta Round #90|10|\n|<ul><li>- [ ] Done</li></ul>|219|[Darts](http://codeforces.com/problemset/problem/107/E)|Codeforces||Codeforces Beta Round #83 (Div. 1 Only)|10|\n|<ul><li>- [ ] Done</li></ul>|220|[Mogohu-Rea Idol](http://codeforces.com/problemset/problem/87/E)|Codeforces||Codeforces Beta Round #73 (Div. 1 Only)|10|\n|<ul><li>- [ ] Done</li></ul>|221|[Plane of Tanks](http://codeforces.com/problemset/problem/73/F)|Codeforces||Codeforces Beta Round #66|10|\n|<ul><li>- [ ] Done</li></ul>|222|[Contact](http://codeforces.com/problemset/problem/68/E)|Codeforces||Codeforces Beta Round #62|10|\n|<ul><li>- [ ] Done</li></ul>|223|[Vacuum ?leaner](http://codeforces.com/problemset/problem/54/E)|Codeforces||Codeforces Beta Round #50|10|\n|<ul><li>- [ ] Done</li></ul>|224|[BerPaint](http://codeforces.com/problemset/problem/44/F)|Codeforces||School Team Contest #2 (Winter Computer School 2010/11)|10|\n|<ul><li>- [ ] Done</li></ul>|225|[Armistice Area Apportionment](http://codeforces.com/problemset/problem/645/G)|Codeforces||CROC 2016 - Elimination Round|10|\n|<ul><li>- [ ] Done</li></ul>|226|[New Year and Cake](http://codeforces.com/problemset/problem/611/G)|Codeforces||Good Bye 2015|10|\n|<ul><li>- [ ] Done</li></ul>|227|[Cross Sum](http://codeforces.com/problemset/problem/607/E)|Codeforces||Codeforces Round #336 (Div. 1)|10|\n|<ul><li>- [ ] Done</li></ul>|228|[Cut Length](http://codeforces.com/problemset/problem/598/F)|Codeforces||Educational Codeforces Round 1|10|\n|<ul><li>- [ ] Done</li></ul>|229|[BCPC](http://codeforces.com/problemset/problem/592/E)|Codeforces||Codeforces Round #328 (Div. 2)|10|\n|<ul><li>- [ ] Done</li></ul>|230|[Spectator Riots](http://codeforces.com/problemset/problem/575/E)|Codeforces||Bubble Cup 8 - Finals [Online Mirror]|10|\n|<ul><li>- [ ] Done</li></ul>|231|[Points in triangle](http://codeforces.com/problemset/problem/530/H)|Codeforces||VK Cup 2015 - Wild Card Round 1|10|\n|<ul><li>- [ ] Done</li></ul>|232|[Triangles 3000](http://codeforces.com/problemset/problem/528/E)|Codeforces||Codeforces Round #296 (Div. 1)|10|\n|<ul><li>- [ ] Done</li></ul>|233|[Gears](http://codeforces.com/problemset/problem/497/D)|Codeforces||Codeforces Round #283 (Div. 1)|10|\n|<ul><li>- [ ] Done</li></ul>|234|[Gena and Second Distance](http://codeforces.com/problemset/problem/442/E)|Codeforces||Codeforces Round #253 (Div. 1)|10|\n|<ul><li>- [ ] Done</li></ul>|235|[Playing the ball](http://codeforces.com/problemset/problem/420/E)|Codeforces||Coder-Strike 2014 - Finals (online edition, Div. 1)|10|\n|<ul><li>- [ ] Done</li></ul>|236|[Lightbulb for Minister](http://codeforces.com/problemset/problem/394/E)|Codeforces||Codeforces Round #231 (Div. 2)|10|\n|<ul><li>- [ ] Done</li></ul>|237|[Fox and Meteor Shower](http://codeforces.com/problemset/problem/388/E)|Codeforces||Codeforces Round #228 (Div. 1)|10|\n|<ul><li>- [ ] Done</li></ul>|238|[Cookie Clicker](http://codeforces.com/problemset/problem/377/E)|Codeforces||Codeforces Round #222 (Div. 1)|10|\n|<ul><li>- [ ] Done</li></ul>|239|[Inna and Babies](http://codeforces.com/problemset/problem/374/E)|Codeforces||Codeforces Round #220 (Div. 2)|10|\n|<ul><li>- [ ] Done</li></ul>|240|[Drawing Circles is Fun](http://codeforces.com/problemset/problem/372/E)|Codeforces||Codeforces Round #219 (Div. 1)|10|\n|<ul><li>- [ ] Done</li></ul>|241|[Looking for Owls](http://codeforces.com/problemset/problem/350/D)|Codeforces||Codeforces Round #203 (Div. 2)|10|\n|<ul><li>- [ ] Done</li></ul>|242|[Tennis Rackets](http://codeforces.com/problemset/problem/309/D)|Codeforces||Croc Champ 2013 - Finals (online version, Div. 1)|10|\n|<ul><li>- [ ] Done</li></ul>|243|[Polygon](http://codeforces.com/problemset/problem/306/D)|Codeforces||Testing Round #6|10|\n|<ul><li>- [ ] Done</li></ul>|244|[Emperor's Problem](http://codeforces.com/problemset/problem/46/G)|Codeforces||School Personal Contest #2 (Winter Computer School 2010/11) - Codeforces Beta Round #43 (ACM-ICPC Rules)|10|\n|<ul><li>- [ ] Done</li></ul>|245|[DravDe saves the world](http://codeforces.com/problemset/problem/28/E)|Codeforces||Codeforces Beta Round #28 (Codeforces format)|10|\n|<ul><li>- [ ] Done</li></ul>|246|[Hongcow Draws a Circle](http://codeforces.com/problemset/problem/744/D)|Codeforces||Codeforces Round #385 (Div. 1)|10|\n|<ul><li>- [ ] Done</li></ul>|247|[Lada Malina](http://codeforces.com/problemset/problem/853/E)|Codeforces||Codeforces Round #433 (Div. 1, based on Olympiad of Metropolises)|10|\n|<ul><li>- [ ] Done</li></ul>|248|[Iron Man](http://codeforces.com/problemset/problem/704/E)|Codeforces||Codeforces Round #366 (Div. 1)|10|\n|<ul><li>- [ ] Done</li></ul>|249|[Mobile Life](http://acm.timus.ru/problem.aspx?space=1&num=1415)|Timus|||10|\n|<ul><li>- [ ] Done</li></ul>|250|[Multishot in the Secret Cow Level](http://acm.timus.ru/problem.aspx?space=1&num=1556)|Timus|||10|\n|<ul><li>- [ ] Done</li></ul>|251|[Winding Number](http://acm.timus.ru/problem.aspx?space=1&num=1599)|Timus|||10|\n|<ul><li>- [ ] Done</li></ul>|252|[Interfering Segment](http://acm.timus.ru/problem.aspx?space=1&num=1626)|Timus|||10|\n|<ul><li>- [ ] Done</li></ul>|253|[Goat in the Garden 6](http://acm.timus.ru/problem.aspx?space=1&num=1662)|Timus|||10|\n|<ul><li>- [ ] Done</li></ul>|254|[Boss, I Can See You!](http://acm.timus.ru/problem.aspx?space=1&num=1955)|Timus|||10|\n"
  },
  {
    "path": "categories/018. Number_Theory/README.md",
    "content": "# 018. Number_Theory\n\n\n| Checkbox | ID | Problem Name|Online Judge|Year|Contest|Difficulty Level|\n|:---:|:---:|:---:|:---:|:---:|:---:|:---:|\n|<ul><li>- [ ] Done</li></ul>|1|[Prime Number Theorem](http://www.spoj.com/problems/CPRIME/)|SPOJ|||1|\n|<ul><li>- [ ] Done</li></ul>|2|[Divisors](http://www.spoj.com/problems/DIV/)|SPOJ|||1|\n|<ul><li>- [ ] Done</li></ul>|3|[Euler Totient Function](http://www.spoj.com/problems/ETF/)|SPOJ|||1|\n|<ul><li>- [ ] Done</li></ul>|4|[Factorial](http://www.spoj.com/problems/FCTRL/)|SPOJ|||1|\n|<ul><li>- [ ] Done</li></ul>|5|[Game of Lines](http://www.spoj.com/problems/LINES/)|SPOJ|||1|\n|<ul><li>- [ ] Done</li></ul>|6|[Marbles](http://www.spoj.com/problems/MARBLES/)|SPOJ|||1|\n|<ul><li>- [ ] Done</li></ul>|7|[The Moronic Cowmpouter](http://www.spoj.com/problems/NEG2/)|SPOJ|||1|\n|<ul><li>- [ ] Done</li></ul>|8|[Prime or Not](http://www.spoj.com/problems/PON/)|SPOJ|||1|\n|<ul><li>- [ ] Done</li></ul>|9|[Prime Generator](http://www.spoj.com/problems/PRIME1/)|SPOJ|||1|\n|<ul><li>- [ ] Done</li></ul>|10|[Two squares or not two squares](http://www.spoj.com/problems/TWOSQRS/)|SPOJ|||1|\n|<ul><li>- [ ] Done</li></ul>|11|[Divisor Summation](http://www.spoj.com/problems/DIVSUM/)|SPOJ|||1|\n|<ul><li>- [ ] Done</li></ul>|12|[Integer Factorization (15 digits)](http://www.spoj.com/problems/FACT0/)|SPOJ|||1|\n|<ul><li>- [ ] Done</li></ul>|13|[LCM Sum](http://www.spoj.com/problems/LCMSUM/)|SPOJ|||1|\n|<ul><li>- [ ] Done</li></ul>|14|[GCD Extreme](http://www.spoj.com/problems/GCDEX/)|SPOJ|||1|\n|<ul><li>- [ ] Done</li></ul>|15|[T-primes](http://codeforces.com/problemset/problem/230/B)|Codeforces||Codeforces Round #142 (Div. 2)|1|\n|<ul><li>- [ ] Done</li></ul>|16|[Hexadecimal's theorem](http://codeforces.com/problemset/problem/199/A)|Codeforces||Codeforces Round #125 (Div. 2)|1|\n|<ul><li>- [ ] Done</li></ul>|17|[Lucky Division](http://codeforces.com/problemset/problem/122/A)|Codeforces||Codeforces Beta Round #91 (Div. 2 Only)|1|\n|<ul><li>- [ ] Done</li></ul>|18|[Panoramix's Prediction](http://codeforces.com/problemset/problem/80/A)|Codeforces||Codeforces Beta Round #69 (Div. 2 Only)|1|\n|<ul><li>- [ ] Done</li></ul>|19|[Almost Prime](http://codeforces.com/problemset/problem/26/A)|Codeforces||Codeforces Beta Round #26 (Codeforces format)|1|\n|<ul><li>- [ ] Done</li></ul>|20|[Medium Factorization](http://www.spoj.com/problems/FACTCG2/)|SPOJ|||1|\n|<ul><li>- [ ] Done</li></ul>|21|[Cifera](http://codeforces.com/problemset/problem/114/A)|Codeforces||Codeforces Beta Round #86 (Div. 2 Only)|1|\n|<ul><li>- [ ] Done</li></ul>|22|[The Equation](http://acm.sgu.ru/problem.php?contest=0&problem=106)|SGU|||1|\n|<ul><li>- [ ] Done</li></ul>|23|[Prime Cuts](https://uva.onlinejudge.org/index.php?option=onlinejudge&page=show_problem&problem=347)|UVA|||1|\n|<ul><li>- [ ] Done</li></ul>|24|[Goldbach's Conjecture](https://uva.onlinejudge.org/index.php?option=onlinejudge&page=show_problem&problem=484)|UVA|||1|\n|<ul><li>- [ ] Done</li></ul>|25|[Goldbach's Conjecture (II)](https://uva.onlinejudge.org/index.php?option=onlinejudge&page=show_problem&problem=627)|UVA|||1|\n|<ul><li>- [ ] Done</li></ul>|26|[Simply Emirp](https://uva.onlinejudge.org/index.php?option=onlinejudge&page=show_problem&problem=1176)|UVA|||1|\n|<ul><li>- [ ] Done</li></ul>|27|[Twin Primes](https://uva.onlinejudge.org/index.php?option=onlinejudge&page=show_problem&problem=1335)|UVA|||1|\n|<ul><li>- [ ] Done</li></ul>|28|[Prime Words](https://uva.onlinejudge.org/index.php?option=onlinejudge&page=show_problem&problem=1865)|UVA|||1|\n|<ul><li>- [ ] Done</li></ul>|29|[The primary problem](https://uva.onlinejudge.org/index.php?option=onlinejudge&page=show_problem&problem=1889)|UVA|||1|\n|<ul><li>- [ ] Done</li></ul>|30|[Ones](https://uva.onlinejudge.org/index.php?option=onlinejudge&page=show_problem&problem=1068)|UVA|||1|\n|<ul><li>- [ ] Done</li></ul>|31|[Relatives](https://uva.onlinejudge.org/index.php?option=onlinejudge&page=show_problem&problem=1240)|UVA|||1|\n|<ul><li>- [ ] Done</li></ul>|32|[Graph Connectivity](https://uva.onlinejudge.org/index.php?option=onlinejudge&page=show_problem&problem=400)|UVA|||1|\n|<ul><li>- [ ] Done</li></ul>|33|[Count the factors](http://acm.tju.edu.cn/toj/showp1868.html)|TJU|||1|\n|<ul><li>- [ ] Done</li></ul>|34|[Tip Top Game](http://www.spoj.com/problems/TIPTOP/)|SPOJ|||1|\n|<ul><li>- [ ] Done</li></ul>|35|[Factovisors](https://uva.onlinejudge.org/index.php?option=onlinejudge&page=show_problem&problem=1080)|UVA|||1|\n|<ul><li>- [ ] Done</li></ul>|36|[Play with Floor and Ceil](https://uva.onlinejudge.org/index.php?option=onlinejudge&page=show_problem&problem=1614)|UVA|||1|\n|<ul><li>- [ ] Done</li></ul>|37|[Totient Extreme](http://www.spoj.com/problems/DCEPCA03/)|SPOJ|||1|\n|<ul><li>- [ ] Done</li></ul>|38|[Factors and Factorials](https://uva.onlinejudge.org/index.php?option=onlinejudge&page=show_problem&problem=96)|UVA|||1|\n|<ul><li>- [ ] Done</li></ul>|39|[Fombinatorial](http://www.codechef.com/problems/POWERMUL)|CodeChef|||1|\n|<ul><li>- [ ] Done</li></ul>|40|[Celebrity jeopardy](https://uva.onlinejudge.org/index.php?option=onlinejudge&page=show_problem&problem=3565)|UVA|||1|\n|<ul><li>- [ ] Done</li></ul>|41|[Again Twenty Five!](http://codeforces.com/problemset/problem/630/A)|Codeforces||Experimental Educational Round: VolBIT Formulas Blitz|1|\n|<ul><li>- [ ] Done</li></ul>|42|[Multiplication Table](http://codeforces.com/problemset/problem/577/A)|Codeforces||Codeforces Round #319 (Div. 2)|1|\n|<ul><li>- [ ] Done</li></ul>|43|[Vasya and Petya's Game](http://codeforces.com/problemset/problem/576/A)|Codeforces||Codeforces Round #319 (Div. 1) & Codeforces Round #319 (Div. 2)|1|\n|<ul><li>- [ ] Done</li></ul>|44|[Bear and Poker](http://codeforces.com/problemset/problem/573/A)|Codeforces||Codeforces Round #318 [RussianCodeCup Thanks-Round] (Div. 1) & Codeforces Round #318 [RussianCodeCup Thanks-Round] (Div. 2)|1|\n|<ul><li>- [ ] Done</li></ul>|45|[A and B and Team Training](http://codeforces.com/problemset/problem/519/C)|Codeforces||Codeforces Round #294 (Div. 2)|1|\n|<ul><li>- [ ] Done</li></ul>|46|[Design Tutorial: Learn from Math](http://codeforces.com/problemset/problem/472/A)|Codeforces||Codeforces Round #270|1|\n|<ul><li>- [ ] Done</li></ul>|47|[Fedya and Maths](http://codeforces.com/problemset/problem/456/B)|Codeforces||Codeforces Round #260 (Div. 2)|1|\n|<ul><li>- [ ] Done</li></ul>|48|[Ilya and Bank Account](http://codeforces.com/problemset/problem/313/A)|Codeforces||Codeforces Round #186 (Div. 2)|1|\n|<ul><li>- [ ] Done</li></ul>|49|[Toy Army](http://codeforces.com/problemset/problem/84/A)|Codeforces||Codeforces Beta Round #72 (Div. 2 Only)|1|\n|<ul><li>- [ ] Done</li></ul>|50|[Alyona and Numbers](http://codeforces.com/problemset/problem/682/A)|Codeforces||Codeforces Round #358 (Div. 2)|1|\n|<ul><li>- [ ] Done</li></ul>|51|[Almost Prime Numbers](https://uva.onlinejudge.org/index.php?option=onlinejudge&page=show_problem&problem=1480)|UVA|||1|\n|<ul><li>- [ ] Done</li></ul>|52|[Bachgold Problem](http://codeforces.com/problemset/problem/749/A)|Codeforces||Codeforces Round #388 (Div. 2)|1|\n|<ul><li>- [ ] Done</li></ul>|53|[Arpa’s hard exam and Mehrdad’s naive cheat](http://codeforces.com/problemset/problem/742/A)|Codeforces||Codeforces Round #383 (Div. 2)|1|\n|<ul><li>- [ ] Done</li></ul>|54|[Factorial](https://icpcarchive.ecs.baylor.edu/index.php?option=onlinejudge&page=show_problem&problem=159)|Live Archive|2000|Europe - Central|1|\n|<ul><li>- [ ] Done</li></ul>|55|[String Task](http://codeforces.com/problemset/problem/118/A)|Codeforces||Codeforces Beta Round #89 (Div. 2)|1|\n|<ul><li>- [ ] Done</li></ul>|56|[The Bytelandian Cryptographer (Act I)](http://www.spoj.com/problems/CRYPTO1/)|SPOJ|||2|\n|<ul><li>- [ ] Done</li></ul>|57|[Sort fractions](http://www.spoj.com/problems/FRACTION/)|SPOJ|||2|\n|<ul><li>- [ ] Done</li></ul>|58|[Prime Again ](http://www.spoj.com/problems/PAGAIN/)|SPOJ|||2|\n|<ul><li>- [ ] Done</li></ul>|59|[Primitive Root](http://www.spoj.com/problems/PROOT/)|SPOJ|||2|\n|<ul><li>- [ ] Done</li></ul>|60|[Divisor Summation (Hard)](http://www.spoj.com/problems/DIVSUM2/)|SPOJ|||2|\n|<ul><li>- [ ] Done</li></ul>|61|[Integer Factorization (20 digits)](http://www.spoj.com/problems/FACT1/)|SPOJ|||2|\n|<ul><li>- [ ] Done</li></ul>|62|[Divisors 2](http://www.spoj.com/problems/DIV2/)|SPOJ|||2|\n|<ul><li>- [ ] Done</li></ul>|63|[N DIV PHI_N](http://www.spoj.com/problems/NDIVPHI/)|SPOJ|||2|\n|<ul><li>- [ ] Done</li></ul>|64|[Square-free integers](http://www.spoj.com/problems/SQFREE/)|SPOJ|||2|\n|<ul><li>- [ ] Done</li></ul>|65|[Playing with Marbles](http://www.spoj.com/problems/TUTMRBL/)|SPOJ|||2|\n|<ul><li>- [ ] Done</li></ul>|66|[Odd Numbers of Divisors](http://www.spoj.com/problems/ODDDIV/)|SPOJ|||2|\n|<ul><li>- [ ] Done</li></ul>|67|[Equation](http://www.spoj.com/problems/KPEQU/)|SPOJ|||2|\n|<ul><li>- [ ] Done</li></ul>|68|[LCM Challenge](http://codeforces.com/problemset/problem/235/A)|Codeforces||Codeforces Round #146 (Div. 1) & Codeforces Round #146 (Div. 2)|2|\n|<ul><li>- [ ] Done</li></ul>|69|[Ice Sculptures](http://codeforces.com/problemset/problem/158/D)|Codeforces||VK Cup 2012 Qualification Round 1|2|\n|<ul><li>- [ ] Done</li></ul>|70|[Jumping Champion](https://uva.onlinejudge.org/index.php?option=onlinejudge&page=show_problem&problem=855)|UVA|||2|\n|<ul><li>- [ ] Done</li></ul>|71|[Goldbach and Euler](https://uva.onlinejudge.org/index.php?option=onlinejudge&page=show_problem&problem=1252)|UVA|||2|\n|<ul><li>- [ ] Done</li></ul>|72|[Marbles](https://uva.onlinejudge.org/index.php?option=onlinejudge&page=show_problem&problem=1031)|UVA|||2|\n|<ul><li>- [ ] Done</li></ul>|73|[Mint](https://uva.onlinejudge.org/index.php?option=onlinejudge&page=show_problem&problem=1658)|UVA|||2|\n|<ul><li>- [ ] Done</li></ul>|74|[Psycho](http://www.spoj.com/problems/PSYCHON/)|SPOJ|||2|\n|<ul><li>- [ ] Done</li></ul>|75|[Minimum Number](http://www.spoj.com/problems/MINNUM/)|SPOJ|||2|\n|<ul><li>- [ ] Done</li></ul>|76|[Mr. Azad and his Son!!!!!](https://uva.onlinejudge.org/index.php?option=onlinejudge&page=show_problem&problem=1431)|UVA|||2|\n|<ul><li>- [ ] Done</li></ul>|77|[TEX Quotes](https://icpcarchive.ecs.baylor.edu/index.php?option=onlinejudge&page=show_problem&problem=3382)|Live Archive|1994|North America - East Central NA|2|\n|<ul><li>- [ ] Done</li></ul>|78|[MCQ Exam](p?ID=203)|A2 Online Judge|||2|\n|<ul><li>- [ ] Done</li></ul>|79|[Dima and Lisa](http://codeforces.com/problemset/problem/584/D)|Codeforces||Codeforces Round #324 (Div. 2)|2|\n|<ul><li>- [ ] Done</li></ul>|80|[Soldier and Number Game](http://codeforces.com/problemset/problem/546/D)|Codeforces||Codeforces Round #304 (Div. 2)|2|\n|<ul><li>- [ ] Done</li></ul>|81|[Drazil and His Happy Friends](http://codeforces.com/problemset/problem/515/B)|Codeforces||Codeforces Round #292 (Div. 1) & Codeforces Round #292 (Div. 2) & Codeforces Round #292 (Div. 1) & Codeforces Round #292 (Div. 2)|2|\n|<ul><li>- [ ] Done</li></ul>|82|[Mashmokh and Numbers](http://codeforces.com/problemset/problem/414/A)|Codeforces||Codeforces Round #240 (Div. 1) & Codeforces Round #240 (Div. 2)|2|\n|<ul><li>- [ ] Done</li></ul>|83|[Alice and Bob](http://codeforces.com/problemset/problem/346/A)|Codeforces||Codeforces Round #201 (Div. 1) & Codeforces Round #201 (Div. 2)|2|\n|<ul><li>- [ ] Done</li></ul>|84|[Rational Resistance](http://codeforces.com/problemset/problem/343/A)|Codeforces||Codeforces Round #200 (Div. 1) & Codeforces Round #200 (Div. 2)|2|\n|<ul><li>- [ ] Done</li></ul>|85|[Prime Matrix](http://codeforces.com/problemset/problem/271/B)|Codeforces||Codeforces Round #166 (Div. 2)|2|\n|<ul><li>- [ ] Done</li></ul>|86|[k-th divisor](http://codeforces.com/problemset/problem/762/A)|Codeforces||Educational Codeforces Round 17|2|\n|<ul><li>- [ ] Done</li></ul>|87|[Leha and Function](http://codeforces.com/problemset/problem/840/A)|Codeforces||Codeforces Round #429 (Div. 1) & Codeforces Round #429 (Div. 2)|2|\n|<ul><li>- [ ] Done</li></ul>|88|[Taxes](http://codeforces.com/problemset/problem/735/D)|Codeforces||Codeforces Round #382 (Div. 2) & Codeforces Round #382 (Div. 1)|2|\n|<ul><li>- [ ] Done</li></ul>|89|[Pride](http://codeforces.com/problemset/problem/891/A)|Codeforces||Codeforces Round #446 (Div. 1) & Codeforces Round #446 (Div. 2)|2|\n|<ul><li>- [ ] Done</li></ul>|90|[Vladik and fractions](http://codeforces.com/problemset/problem/743/C)|Codeforces||Codeforces Round #384 (Div. 2)|2|\n|<ul><li>- [ ] Done</li></ul>|91|[Pythagorean Triples](http://codeforces.com/problemset/problem/707/C)|Codeforces||Codeforces Round #368 (Div. 2)|2|\n|<ul><li>- [ ] Done</li></ul>|92|[Arpa’s obvious problem and Mehrdad’s terrible solution](http://codeforces.com/problemset/problem/742/B)|Codeforces||Codeforces Round #383 (Div. 2)|2|\n|<ul><li>- [ ] Done</li></ul>|93|[Number Theory for Newbies](https://uva.onlinejudge.org/index.php?option=onlinejudge&page=show_problem&problem=2366)|UVA|||2|\n|<ul><li>- [ ] Done</li></ul>|94|[Anagrammatic Primes](https://uva.onlinejudge.org/index.php?option=onlinejudge&page=show_problem&problem=838)|UVA|||2|\n|<ul><li>- [ ] Done</li></ul>|95|[GCD Determinant ](http://www.spoj.com/problems/MSE08H/)|SPOJ|||3|\n|<ul><li>- [ ] Done</li></ul>|96|[Skyscraper Floors](http://www.spoj.com/problems/SCRAPER/)|SPOJ|||3|\n|<ul><li>- [ ] Done</li></ul>|97|[Homework](http://www.spoj.com/problems/HOMEW/)|SPOJ|||3|\n|<ul><li>- [ ] Done</li></ul>|98|[Congruence Equation](http://www.spoj.com/problems/DPEQN/)|SPOJ|||3|\n|<ul><li>- [ ] Done</li></ul>|99|[Sky Code](http://www.spoj.com/problems/MSKYCODE/)|SPOJ|||3|\n|<ul><li>- [ ] Done</li></ul>|100|[Binomial Coefficients](http://www.spoj.com/problems/UCI2009B/)|SPOJ|||3|\n|<ul><li>- [ ] Done</li></ul>|101|[Primes on Interval](http://codeforces.com/problemset/problem/237/C)|Codeforces||Codeforces Round #147 (Div. 2)|3|\n|<ul><li>- [ ] Done</li></ul>|102|[Easy Number Challenge](http://codeforces.com/problemset/problem/236/B)|Codeforces||Codeforces Round #146 (Div. 2)|3|\n|<ul><li>- [ ] Done</li></ul>|103|[Little Elephant and Numbers](http://codeforces.com/problemset/problem/221/B)|Codeforces||Codeforces Round #136 (Div. 2)|3|\n|<ul><li>- [ ] Done</li></ul>|104|[Win or Freeze](http://codeforces.com/problemset/problem/150/A)|Codeforces||Codeforces Round #107 (Div. 1) & Codeforces Round #107 (Div. 2)|3|\n|<ul><li>- [ ] Done</li></ul>|105|[Modified GCD](http://codeforces.com/problemset/problem/75/C)|Codeforces||Codeforces Beta Round #67 (Div. 2)|3|\n|<ul><li>- [ ] Done</li></ul>|106|[Noldbach problem](http://codeforces.com/problemset/problem/17/A)|Codeforces||Codeforces Beta Round #17|3|\n|<ul><li>- [ ] Done</li></ul>|107|[Chef and Functions](http://www.codechef.com/problems/FUNC)|CodeChef|||3|\n|<ul><li>- [ ] Done</li></ul>|108|[Cows and Primitive Roots](http://codeforces.com/problemset/problem/284/A)|Codeforces||Codeforces Round #174 (Div. 2)|3|\n|<ul><li>- [ ] Done</li></ul>|109|[DDF](https://uva.onlinejudge.org/index.php?option=onlinejudge&page=show_problem&problem=488)|UVA|||3|\n|<ul><li>- [ ] Done</li></ul>|110|[A Trivial Problem](http://codeforces.com/problemset/problem/633/B)|Codeforces||Manthan, Codefest 16|3|\n|<ul><li>- [ ] Done</li></ul>|111|[Primes or Palindromes?](http://codeforces.com/problemset/problem/568/A)|Codeforces||Codeforces Round #315 (Div. 1) & Codeforces Round #315 (Div. 2)|3|\n|<ul><li>- [ ] Done</li></ul>|112|[Bear and Prime Numbers](http://codeforces.com/problemset/problem/385/C)|Codeforces||Codeforces Round #226 (Div. 2)|3|\n|<ul><li>- [ ] Done</li></ul>|113|[Fox Dividing Cheese](http://codeforces.com/problemset/problem/371/B)|Codeforces||Codeforces Round #218 (Div. 2)|3|\n|<ul><li>- [ ] Done</li></ul>|114|[Levko and Permutation](http://codeforces.com/problemset/problem/361/B)|Codeforces||Codeforces Round #210 (Div. 2)|3|\n|<ul><li>- [ ] Done</li></ul>|115|[Quiz](http://codeforces.com/problemset/problem/337/C)|Codeforces||Codeforces Round #196 (Div. 2) & Codeforces Round #196 (Div. 1)|3|\n|<ul><li>- [ ] Done</li></ul>|116|[Routine Problem](http://codeforces.com/problemset/problem/337/B)|Codeforces||Codeforces Round #196 (Div. 2)|3|\n|<ul><li>- [ ] Done</li></ul>|117|[Good Sequences](http://codeforces.com/problemset/problem/264/B)|Codeforces||Codeforces Round #162 (Div. 1) & Codeforces Round #162 (Div. 2)|3|\n|<ul><li>- [ ] Done</li></ul>|118|[Permutation Primes](https://icpcarchive.ecs.baylor.edu/index.php?option=onlinejudge&page=show_problem&problem=1018)|Live Archive|2004|Asia - Dhaka|3|\n|<ul><li>- [ ] Done</li></ul>|119|[Primal Fear](http://www.spoj.com/problems/VECTAR8/)|SPOJ|||3|\n|<ul><li>- [ ] Done</li></ul>|120|[The Meaningless Game](http://codeforces.com/problemset/problem/833/A)|Codeforces||Codeforces Round #426 (Div. 1) & Codeforces Round #426 (Div. 2)|3|\n|<ul><li>- [ ] Done</li></ul>|121|[Mike and gcd problem](http://codeforces.com/problemset/problem/798/C)|Codeforces||Codeforces Round #410 (Div. 2)|3|\n|<ul><li>- [ ] Done</li></ul>|122|[Eugeny and Play List](http://codeforces.com/problemset/problem/302/B)|Codeforces||Codeforces Round #182 (Div. 2)|3|\n|<ul><li>- [ ] Done</li></ul>|123|[The Super Powers](https://uva.onlinejudge.org/index.php?option=onlinejudge&page=show_problem&problem=2852)|UVA|||3|\n|<ul><li>- [ ] Done</li></ul>|124|[SETI](http://www.spoj.com/problems/NWERC04H/)|SPOJ|||4|\n|<ul><li>- [ ] Done</li></ul>|125|[Rank of a Fraction](http://www.spoj.com/problems/FNRANK/)|SPOJ|||4|\n|<ul><li>- [ ] Done</li></ul>|126|[N DIV PHI_N (Hard)](http://www.spoj.com/problems/NDIVPHI2/)|SPOJ|||4|\n|<ul><li>- [ ] Done</li></ul>|127|[Chilly Willy](http://codeforces.com/problemset/problem/248/B)|Codeforces||Codeforces Round #152 (Div. 2)|4|\n|<ul><li>- [ ] Done</li></ul>|128|[Well-known Numbers](http://codeforces.com/problemset/problem/225/B)|Codeforces||Codeforces Round #139 (Div. 2)|4|\n|<ul><li>- [ ] Done</li></ul>|129|[Colliders](http://codeforces.com/problemset/problem/154/B)|Codeforces||Codeforces Round #109 (Div. 1) & Codeforces Round #109 (Div. 2)|4|\n|<ul><li>- [ ] Done</li></ul>|130|[Petya and Divisors](http://codeforces.com/problemset/problem/111/B)|Codeforces||Codeforces Beta Round #85 (Div. 1 Only) & Codeforces Beta Round #85 (Div. 2 Only)|4|\n|<ul><li>- [ ] Done</li></ul>|131|[Round Table Knights](http://codeforces.com/problemset/problem/71/C)|Codeforces||Codeforces Beta Round #65 (Div. 2)|4|\n|<ul><li>- [ ] Done</li></ul>|132|[Irrational problem](http://codeforces.com/problemset/problem/68/A)|Codeforces||Codeforces Beta Round #62|4|\n|<ul><li>- [ ] Done</li></ul>|133|[Fortune Telling](http://codeforces.com/problemset/problem/59/B)|Codeforces||Codeforces Beta Round #55 (Div. 2)|4|\n|<ul><li>- [ ] Done</li></ul>|134|[Dots](http://www.spoj.com/problems/DOTS/)|SPOJ|||4|\n|<ul><li>- [ ] Done</li></ul>|135|[Skyscraper Floors](https://uva.onlinejudge.org/index.php?option=onlinejudge&page=show_problem&problem=659)|UVA|||4|\n|<ul><li>- [ ] Done</li></ul>|136|[Boring Card Game](https://icpcarchive.ecs.baylor.edu/index.php?option=onlinejudge&page=show_problem&problem=3890)|Live Archive|2011|Europe - Central|4|\n|<ul><li>- [ ] Done</li></ul>|137|[Gaussian Prime Factors](https://icpcarchive.ecs.baylor.edu/index.php?option=onlinejudge&page=show_problem&problem=1197)|Live Archive|2006|Asia - Manila|4|\n|<ul><li>- [ ] Done</li></ul>|138|[Broken Keyboard](https://uva.onlinejudge.org/index.php?option=onlinejudge&page=show_problem&problem=1702)|UVA|||4|\n|<ul><li>- [ ] Done</li></ul>|139|[Subtraction](p?ID=129)|A2 Online Judge|||4|\n|<ul><li>- [ ] Done</li></ul>|140|[Multipliers](http://codeforces.com/problemset/problem/615/D)|Codeforces||Codeforces Round #338 (Div. 2)|4|\n|<ul><li>- [ ] Done</li></ul>|141|[Gerald and Giant Chess](http://codeforces.com/problemset/problem/559/C)|Codeforces||Codeforces Round #313 (Div. 1) & Codeforces Round #313 (Div. 2)|4|\n|<ul><li>- [ ] Done</li></ul>|142|[Ant colony](http://codeforces.com/problemset/problem/474/F)|Codeforces||Codeforces Round #271 (Div. 2)|4|\n|<ul><li>- [ ] Done</li></ul>|143|[Devu and Partitioning of the Array](http://codeforces.com/problemset/problem/439/C)|Codeforces||Codeforces Round #251 (Div. 2)|4|\n|<ul><li>- [ ] Done</li></ul>|144|[Divisible by Seven](http://codeforces.com/problemset/problem/375/A)|Codeforces||Codeforces Round #221 (Div. 1) & Codeforces Round #221 (Div. 2)|4|\n|<ul><li>- [ ] Done</li></ul>|145|[Find Maximum](http://codeforces.com/problemset/problem/353/C)|Codeforces||Codeforces Round #205 (Div. 2)|4|\n|<ul><li>- [ ] Done</li></ul>|146|[Ksusha and Array](http://codeforces.com/problemset/problem/299/A)|Codeforces||Croc Champ 2013 - Round 2 (Div. 2 Edition)|4|\n|<ul><li>- [ ] Done</li></ul>|147|[Subtractions](http://codeforces.com/problemset/problem/267/A)|Codeforces||Codeforces Testing Round #5|4|\n|<ul><li>- [ ] Done</li></ul>|148|[Fox And Jumping](http://codeforces.com/problemset/problem/510/D)|Codeforces||Codeforces Round #290 (Div. 2) & Codeforces Round #290 (Div. 1)|4|\n|<ul><li>- [ ] Done</li></ul>|149|[Remainders Game](http://codeforces.com/problemset/problem/687/B)|Codeforces||Codeforces Round #360 (Div. 1) & Codeforces Round #360 (Div. 2)|4|\n|<ul><li>- [ ] Done</li></ul>|150|[Ralph And His Magic Field](http://codeforces.com/problemset/problem/894/B)|Codeforces||Codeforces Round #447 (Div. 2)|4|\n|<ul><li>- [ ] Done</li></ul>|151|[The Most Complex Number](http://acm.timus.ru/problem.aspx?space=1&num=1748)|Timus|||4|\n|<ul><li>- [ ] Done</li></ul>|152|[Rectangular Game](http://codeforces.com/problemset/problem/177/B2)|Codeforces||ABBYY Cup 2.0 - Easy|5|\n|<ul><li>- [ ] Done</li></ul>|153|[Rectangular Game](http://codeforces.com/problemset/problem/177/B1)|Codeforces||ABBYY Cup 2.0 - Easy|5|\n|<ul><li>- [ ] Done</li></ul>|154|[Pseudorandom Sequence Period](http://codeforces.com/problemset/problem/172/B)|Codeforces||Croc Champ 2012 - Qualification Round|5|\n|<ul><li>- [ ] Done</li></ul>|155|[Prime Permutation](http://codeforces.com/problemset/problem/123/A)|Codeforces||Codeforces Beta Round #92 (Div. 1 Only) & Codeforces Beta Round #92 (Div. 2 Only)|5|\n|<ul><li>- [ ] Done</li></ul>|156|[Petya and His Friends](http://codeforces.com/problemset/problem/66/D)|Codeforces||Codeforces Beta Round #61 (Div. 2)|5|\n|<ul><li>- [ ] Done</li></ul>|157|[Number With The Given Amount Of Divisors](http://codeforces.com/problemset/problem/27/E)|Codeforces||Codeforces Beta Round #27 (Codeforces format, Div. 2)|5|\n|<ul><li>- [ ] Done</li></ul>|158|[Monitor](http://codeforces.com/problemset/problem/16/C)|Codeforces||Codeforces Beta Round #16 (Div. 2 Only)|5|\n|<ul><li>- [ ] Done</li></ul>|159|[Line](http://codeforces.com/problemset/problem/7/C)|Codeforces||Codeforces Beta Round #7|5|\n|<ul><li>- [ ] Done</li></ul>|160|[Moodular Arithmetic](http://codeforces.com/problemset/problem/603/B)|Codeforces||Codeforces Round #334 (Div. 1) & Codeforces Round #334 (Div. 2)|5|\n|<ul><li>- [ ] Done</li></ul>|161|[Clique in the Divisibility Graph](http://codeforces.com/problemset/problem/566/F)|Codeforces||VK Cup 2015 - Finals, online mirror|5|\n|<ul><li>- [ ] Done</li></ul>|162|[Mike and Foam](http://codeforces.com/problemset/problem/547/C)|Codeforces||Codeforces Round #305 (Div. 1) & Codeforces Round #305 (Div. 2)|5|\n|<ul><li>- [ ] Done</li></ul>|163|[Array and Operations](http://codeforces.com/problemset/problem/498/C)|Codeforces||Codeforces Round #284 (Div. 1) & Codeforces Round #284 (Div. 2)|5|\n|<ul><li>- [ ] Done</li></ul>|164|[Chocolate](http://codeforces.com/problemset/problem/490/D)|Codeforces||Codeforces Round #279 (Div. 2)|5|\n|<ul><li>- [ ] Done</li></ul>|165|[Roman and Numbers](http://codeforces.com/problemset/problem/401/D)|Codeforces||Codeforces Round #235 (Div. 2)|5|\n|<ul><li>- [ ] Done</li></ul>|166|[Vasya and Beautiful Arrays](http://codeforces.com/problemset/problem/354/C)|Codeforces||Codeforces Round #206 (Div. 1) & Codeforces Round #206 (Div. 2)|5|\n|<ul><li>- [ ] Done</li></ul>|167|[Vasily the Bear and Sequence](http://codeforces.com/problemset/problem/336/C)|Codeforces||Codeforces Round #195 (Div. 2)|5|\n|<ul><li>- [ ] Done</li></ul>|168|[Shaass and Lights](http://codeforces.com/problemset/problem/294/C)|Codeforces||Codeforces Round #178 (Div. 2)|5|\n|<ul><li>- [ ] Done</li></ul>|169|[Upgrading Array](http://codeforces.com/problemset/problem/402/D)|Codeforces||Codeforces Round #236 (Div. 2) & Codeforces Round #236 (Div. 1)|5|\n|<ul><li>- [ ] Done</li></ul>|170|[Tutorial BFS](http://www.spoj.com/problems/TUTBFS/)|SPOJ|||5|\n|<ul><li>- [ ] Done</li></ul>|171|[Winter is here](http://codeforces.com/problemset/problem/839/D)|Codeforces||Codeforces Round #428 (Div. 2)|5|\n|<ul><li>- [ ] Done</li></ul>|172|[Anton and School - 2](http://codeforces.com/problemset/problem/785/D)|Codeforces||Codeforces Round #404 (Div. 2)|5|\n|<ul><li>- [ ] Done</li></ul>|173|[Palindrome Degree](http://codeforces.com/problemset/problem/7/D)|Codeforces||Codeforces Beta Round #7|5|\n|<ul><li>- [ ] Done</li></ul>|174|[Polygon Encoder](http://www.spoj.com/problems/POLYCODE/)|SPOJ|||6|\n|<ul><li>- [ ] Done</li></ul>|175|[Printing some primes (Hard)](http://www.spoj.com/problems/PRIMES2/)|SPOJ|||6|\n|<ul><li>- [ ] Done</li></ul>|176|[Reducing Fractions](http://codeforces.com/problemset/problem/222/C)|Codeforces||Codeforces Round #137 (Div. 2)|6|\n|<ul><li>- [ ] Done</li></ul>|177|[Calendar Reform](http://codeforces.com/problemset/problem/172/D)|Codeforces||Croc Champ 2012 - Qualification Round|6|\n|<ul><li>- [ ] Done</li></ul>|178|[Very Interesting Game](http://codeforces.com/problemset/problem/117/B)|Codeforces||Codeforces Beta Round #88|6|\n|<ul><li>- [ ] Done</li></ul>|179|[Beaver Game](http://codeforces.com/problemset/problem/78/C)|Codeforces||Codeforces Beta Round #70 (Div. 2)|6|\n|<ul><li>- [ ] Done</li></ul>|180|[Longest Subsequence](http://codeforces.com/problemset/problem/632/D)|Codeforces||Educational Codeforces Round 9|6|\n|<ul><li>- [ ] Done</li></ul>|181|[Array GCD](http://codeforces.com/problemset/problem/623/B)|Codeforces||AIM Tech Round (Div. 1) & AIM Tech Round (Div. 2)|6|\n|<ul><li>- [ ] Done</li></ul>|182|[Bots](http://codeforces.com/problemset/problem/575/H)|Codeforces||Bubble Cup 8 - Finals [Online Mirror]|6|\n|<ul><li>- [ ] Done</li></ul>|183|[GukiZ and Binary Operations](http://codeforces.com/problemset/problem/551/D)|Codeforces||Codeforces Round #307 (Div. 2)|6|\n|<ul><li>- [ ] Done</li></ul>|184|[Pluses everywhere](http://codeforces.com/problemset/problem/520/E)|Codeforces||Codeforces Round #295 (Div. 2) & Codeforces Round #295 (Div. 1)|6|\n|<ul><li>- [ ] Done</li></ul>|185|[Prefix Product Sequence](http://codeforces.com/problemset/problem/487/C)|Codeforces||Codeforces Round #278 (Div. 1) & Codeforces Round #278 (Div. 2)|6|\n|<ul><li>- [ ] Done</li></ul>|186|[Devu and Flowers](http://codeforces.com/problemset/problem/451/E)|Codeforces||Codeforces Round #258 (Div. 2)|6|\n|<ul><li>- [ ] Done</li></ul>|187|[Jzzhu and Apples](http://codeforces.com/problemset/problem/449/C)|Codeforces||Codeforces Round #257 (Div. 1) & Codeforces Round #257 (Div. 2)|6|\n|<ul><li>- [ ] Done</li></ul>|188|[Divisors](http://codeforces.com/problemset/problem/448/E)|Codeforces||Codeforces Round #256 (Div. 2)|6|\n|<ul><li>- [ ] Done</li></ul>|189|[DZY Loves Fibonacci Numbers](http://codeforces.com/problemset/problem/446/C)|Codeforces||Codeforces Round #255 (Div. 1) & Codeforces Round #255 (Div. 2)|6|\n|<ul><li>- [ ] Done</li></ul>|190|[Apple Tree](http://codeforces.com/problemset/problem/348/B)|Codeforces||Codeforces Round #202 (Div. 1) & Codeforces Round #202 (Div. 2)|6|\n|<ul><li>- [ ] Done</li></ul>|191|[Lucky Permutation](http://codeforces.com/problemset/problem/121/C)|Codeforces||Codeforces Beta Round #91 (Div. 1 Only) & Codeforces Beta Round #91 (Div. 2 Only)|6|\n|<ul><li>- [ ] Done</li></ul>|192|[Beautiful numbers](http://codeforces.com/problemset/problem/55/D)|Codeforces||Codeforces Beta Round #51|6|\n|<ul><li>- [ ] Done</li></ul>|193|[Goldbach++](https://icpcarchive.ecs.baylor.edu/index.php?option=onlinejudge&page=show_problem&problem=1316)|Live Archive|2005|North America - Southeast USA|6|\n|<ul><li>- [ ] Done</li></ul>|194|[Unusual Sequences](http://codeforces.com/problemset/problem/900/D)|Codeforces||Codeforces Round #450 (Div. 2)|6|\n|<ul><li>- [ ] Done</li></ul>|195|[ZS and The Birthday Paradox](http://codeforces.com/problemset/problem/711/E)|Codeforces||Codeforces Round #369 (Div. 2)|6|\n|<ul><li>- [ ] Done</li></ul>|196|[Integer Factorization (29 digits)](http://www.spoj.com/problems/FACT2/)|SPOJ|||7|\n|<ul><li>- [ ] Done</li></ul>|197|[Finding the Kth Prime (Hard)](http://www.spoj.com/problems/KPRIMES2/)|SPOJ|||7|\n|<ul><li>- [ ] Done</li></ul>|198|[Number Transformation](http://codeforces.com/problemset/problem/251/C)|Codeforces||Codeforces Round #153 (Div. 1) & Codeforces Round #153 (Div. 2)|7|\n|<ul><li>- [ ] Done</li></ul>|199|[Pairs of Numbers](http://codeforces.com/problemset/problem/134/B)|Codeforces||Codeforces Testing Round #3|7|\n|<ul><li>- [ ] Done</li></ul>|200|[Double Happiness](http://codeforces.com/problemset/problem/113/C)|Codeforces||Codeforces Beta Round #86 (Div. 1 Only) & Codeforces Beta Round #86 (Div. 2 Only)|7|\n|<ul><li>- [ ] Done</li></ul>|201|[Chessboard Billiard](http://codeforces.com/problemset/problem/74/C)|Codeforces||Codeforces Beta Round #68|7|\n|<ul><li>- [ ] Done</li></ul>|202|[Digital Root](http://codeforces.com/problemset/problem/10/C)|Codeforces||Codeforces Beta Round #10|7|\n|<ul><li>- [ ] Done</li></ul>|203|[Sum of Remainders](http://codeforces.com/problemset/problem/616/E)|Codeforces||Educational Codeforces Round 5|7|\n|<ul><li>- [ ] Done</li></ul>|204|[Alice, Bob, Oranges and Apples](http://codeforces.com/problemset/problem/585/C)|Codeforces||Codeforces Round #325 (Div. 1) & Codeforces Round #325 (Div. 2)|7|\n|<ul><li>- [ ] Done</li></ul>|205|[Traffic Jams in the Land](http://codeforces.com/problemset/problem/498/D)|Codeforces||Codeforces Round #284 (Div. 1)|7|\n|<ul><li>- [ ] Done</li></ul>|206|[On Sum of Fractions](http://codeforces.com/problemset/problem/396/B)|Codeforces||Codeforces Round #232 (Div. 1) & Codeforces Round #232 (Div. 2)|7|\n|<ul><li>- [ ] Done</li></ul>|207|[On Number of Decompositions into Multipliers](http://codeforces.com/problemset/problem/396/A)|Codeforces||Codeforces Round #232 (Div. 1) & Codeforces Round #232 (Div. 2)|7|\n|<ul><li>- [ ] Done</li></ul>|208|[Divisor Tree](http://codeforces.com/problemset/problem/337/E)|Codeforces||Codeforces Round #196 (Div. 2) & Codeforces Round #196 (Div. 1)|7|\n|<ul><li>- [ ] Done</li></ul>|209|[ucyhf](http://codeforces.com/problemset/problem/171/F)|Codeforces||April Fools Day Contest|7|\n|<ul><li>- [ ] Done</li></ul>|210|[Bamboo Partition](http://codeforces.com/problemset/problem/830/C)|Codeforces||Codeforces Round #424 (Div. 1, rated, based on VK Cup Finals) & Codeforces Round #424 (Div. 2, rated, based on VK Cup Finals)|7|\n|<ul><li>- [ ] Done</li></ul>|211|[Fractions](https://uva.onlinejudge.org/index.php?option=onlinejudge&page=show_problem&problem=2640)|UVA|||8|\n|<ul><li>- [ ] Done</li></ul>|212|[Number Challenge](http://codeforces.com/problemset/problem/235/E)|Codeforces||Codeforces Round #146 (Div. 1)|8|\n|<ul><li>- [ ] Done</li></ul>|213|[Anniversary](http://codeforces.com/problemset/problem/226/C)|Codeforces||Codeforces Round #140 (Div. 1) & Codeforces Round #140 (Div. 2)|8|\n|<ul><li>- [ ] Done</li></ul>|214|[Unsolvable](http://codeforces.com/problemset/problem/225/E)|Codeforces||Codeforces Round #139 (Div. 2)|8|\n|<ul><li>- [ ] Done</li></ul>|215|[Martian Luck](http://codeforces.com/problemset/problem/216/E)|Codeforces||Codeforces Round #133 (Div. 2)|8|\n|<ul><li>- [ ] Done</li></ul>|216|[Periodical Numbers](http://codeforces.com/problemset/problem/215/E)|Codeforces||Codeforces Round #132 (Div. 2)|8|\n|<ul><li>- [ ] Done</li></ul>|217|[Numbers](http://codeforces.com/problemset/problem/83/D)|Codeforces||Codeforces Beta Round #72 (Div. 1 Only)|8|\n|<ul><li>- [ ] Done</li></ul>|218|[Prime Problem](http://codeforces.com/problemset/problem/45/G)|Codeforces||School Team Contest #3 (Winter Computer School 2010/11)|8|\n|<ul><li>- [ ] Done</li></ul>|219|[Notepad](http://codeforces.com/problemset/problem/17/D)|Codeforces||Codeforces Beta Round #17|8|\n|<ul><li>- [ ] Done</li></ul>|220|[Cowslip Collections](http://codeforces.com/problemset/problem/645/F)|Codeforces||CROC 2016 - Elimination Round|8|\n|<ul><li>- [ ] Done</li></ul>|221|[REQ](http://codeforces.com/problemset/problem/594/D)|Codeforces||Codeforces Round #330 (Div. 1)|8|\n|<ul><li>- [ ] Done</li></ul>|222|[Superior Periodic Subarrays](http://codeforces.com/problemset/problem/582/C)|Codeforces||Codeforces Round #323 (Div. 1) & Codeforces Round #323 (Div. 2)|8|\n|<ul><li>- [ ] Done</li></ul>|223|[The Child and Binary Tree](http://codeforces.com/problemset/problem/438/E)|Codeforces||Codeforces Round #250 (Div. 1)|8|\n|<ul><li>- [ ] Done</li></ul>|224|[Beautiful Set](http://codeforces.com/problemset/problem/364/C)|Codeforces||Codeforces Round #213 (Div. 1) & Codeforces Round #213 (Div. 2)|8|\n|<ul><li>- [ ] Done</li></ul>|225|[GCD Table](http://codeforces.com/problemset/problem/338/D)|Codeforces||Codeforces Round #196 (Div. 1)|8|\n|<ul><li>- [ ] Done</li></ul>|226|[Cube Problem](http://codeforces.com/problemset/problem/293/C)|Codeforces||Croc Champ 2013 - Round 2|8|\n|<ul><li>- [ ] Done</li></ul>|227|[Cows and Cool Sequences](http://codeforces.com/problemset/problem/283/D)|Codeforces||Codeforces Round #174 (Div. 1)|8|\n|<ul><li>- [ ] Done</li></ul>|228|[Three Horses](http://codeforces.com/problemset/problem/271/E)|Codeforces||Codeforces Round #166 (Div. 2)|8|\n|<ul><li>- [ ] Done</li></ul>|229|[Ultimate Weirdness of an Array](http://codeforces.com/problemset/problem/671/C)|Codeforces||Codeforces Round #352 (Div. 1) & Codeforces Round #352 (Div. 2)|8|\n|<ul><li>- [ ] Done</li></ul>|230|[Timofey and remoduling](http://codeforces.com/problemset/problem/763/C)|Codeforces||Codeforces Round #395 (Div. 1) & Codeforces Round #395 (Div. 2)|8|\n|<ul><li>- [ ] Done</li></ul>|231|[Mishka and Divisors](http://codeforces.com/problemset/problem/703/E)|Codeforces||Codeforces Round #365 (Div. 2)|8|\n|<ul><li>- [ ] Done</li></ul>|232|[Ada and Connections](http://www.spoj.com/problems/ADACON/)|SPOJ|||8|\n|<ul><li>- [ ] Done</li></ul>|233|[Tractor College](http://codeforces.com/problemset/problem/200/E)|Codeforces||Codeforces Round #126 (Div. 2)|9|\n|<ul><li>- [ ] Done</li></ul>|234|[Visit of the Great](http://codeforces.com/problemset/problem/185/D)|Codeforces||Codeforces Round #118 (Div. 1)|9|\n|<ul><li>- [ ] Done</li></ul>|235|[Divisibility Rules](http://codeforces.com/problemset/problem/180/B)|Codeforces||Codeforces Round #116 (Div. 2, ACM-ICPC Rules)|9|\n|<ul><li>- [ ] Done</li></ul>|236|[Morrowindows](http://codeforces.com/problemset/problem/73/E)|Codeforces||Codeforces Beta Round #66|9|\n|<ul><li>- [ ] Done</li></ul>|237|[Swap (Easy - Level 2)](http://www.spoj.com/problems/SWAP_ESY/)|SPOJ|||9|\n|<ul><li>- [ ] Done</li></ul>|238|[Four Divisors](http://codeforces.com/problemset/problem/665/F)|Codeforces||Educational Codeforces Round 12|9|\n|<ul><li>- [ ] Done</li></ul>|239|[Present for Vitalik the Philatelist ](http://codeforces.com/problemset/problem/585/E)|Codeforces||Codeforces Round #325 (Div. 1)|9|\n|<ul><li>- [ ] Done</li></ul>|240|[Superhero's Job](http://codeforces.com/problemset/problem/542/D)|Codeforces||VK Cup 2015 - Round 3 (unofficial online mirror, Div. 1 only)|9|\n|<ul><li>- [ ] Done</li></ul>|241|[Levko and Sets](http://codeforces.com/problemset/problem/360/D)|Codeforces||Codeforces Round #210 (Div. 1)|9|\n|<ul><li>- [ ] Done</li></ul>|242|[White, Black and White Again](http://codeforces.com/problemset/problem/306/C)|Codeforces||Testing Round #6|9|\n|<ul><li>- [ ] Done</li></ul>|243|[Rotatable Number](http://codeforces.com/problemset/problem/303/D)|Codeforces||Codeforces Round #183 (Div. 1)|9|\n|<ul><li>- [ ] Done</li></ul>|244|[Shaass and Painter Robot](http://codeforces.com/problemset/problem/294/D)|Codeforces||Codeforces Round #178 (Div. 2)|9|\n|<ul><li>- [ ] Done</li></ul>|245|[Prime factorization](http://codeforces.com/problemset/problem/162/C)|Codeforces||VK Cup 2012 Wild-card Round 1|10|\n|<ul><li>- [ ] Done</li></ul>|246|[Number of Binominal Coefficients](http://codeforces.com/problemset/problem/582/D)|Codeforces||Codeforces Round #323 (Div. 1)|10|\n|<ul><li>- [ ] Done</li></ul>|247|[New Year Running](http://codeforces.com/problemset/problem/500/G)|Codeforces||Good Bye 2014|10|\n|<ul><li>- [ ] Done</li></ul>|248|[Jzzhu and Squares](http://codeforces.com/problemset/problem/449/E)|Codeforces||Codeforces Round #257 (Div. 1)|10|\n|<ul><li>- [ ] Done</li></ul>|249|[Mister B and Beacons on Field](http://codeforces.com/problemset/problem/819/C)|Codeforces||Codeforces Round #421 (Div. 1) & Codeforces Round #421 (Div. 2)|10|\n|<ul><li>- [ ] Done</li></ul>|250|[Mister B and Astronomers](http://codeforces.com/problemset/problem/819/D)|Codeforces||Codeforces Round #421 (Div. 1)|10|\n|<ul><li>- [ ] Done</li></ul>|251|[Nephren Runs a Cinema](http://codeforces.com/problemset/problem/896/D)|Codeforces||Codeforces Round #449 (Div. 1)|10|\n"
  },
  {
    "path": "categories/019. strings/README.md",
    "content": "# 019. strings\n\n\n| Checkbox | ID | Problem Name|Online Judge|Year|Contest|Difficulty Level|\n|:---:|:---:|:---:|:---:|:---:|:---:|:---:|\n|<ul><li>- [ ] Done</li></ul>|1|[k-String](http://codeforces.com/problemset/problem/219/A)|Codeforces||Codeforces Round #135 (Div. 2)|1|\n|<ul><li>- [ ] Done</li></ul>|2|[Dubstep](http://codeforces.com/problemset/problem/208/A)|Codeforces||Codeforces Round #130 (Div. 2)|1|\n|<ul><li>- [ ] Done</li></ul>|3|[Amusing Joke](http://codeforces.com/problemset/problem/141/A)|Codeforces||Codeforces Round #101 (Div. 2)|1|\n|<ul><li>- [ ] Done</li></ul>|4|[String Task](http://codeforces.com/problemset/problem/118/A)|Codeforces||Codeforces Beta Round #89 (Div. 2)|1|\n|<ul><li>- [ ] Done</li></ul>|5|[Petya and Strings](http://codeforces.com/problemset/problem/112/A)|Codeforces||Codeforces Beta Round #85 (Div. 2 Only)|1|\n|<ul><li>- [ ] Done</li></ul>|6|[Football](http://codeforces.com/problemset/problem/96/A)|Codeforces||Codeforces Beta Round #77 (Div. 2 Only)|1|\n|<ul><li>- [ ] Done</li></ul>|7|[Way Too Long Words](http://codeforces.com/problemset/problem/71/A)|Codeforces||Codeforces Beta Round #65 (Div. 2)|1|\n|<ul><li>- [ ] Done</li></ul>|8|[Word](http://codeforces.com/problemset/problem/59/A)|Codeforces||Codeforces Beta Round #55 (Div. 2)|1|\n|<ul><li>- [ ] Done</li></ul>|9|[Chat room](http://codeforces.com/problemset/problem/58/A)|Codeforces||Codeforces Beta Round #54 (Div. 2)|1|\n|<ul><li>- [ ] Done</li></ul>|10|[Football](http://codeforces.com/problemset/problem/43/A)|Codeforces||Codeforces Beta Round #42 (Div. 2)|1|\n|<ul><li>- [ ] Done</li></ul>|11|[Translation](http://codeforces.com/problemset/problem/41/A)|Codeforces||Codeforces Beta Round #40 (Div. 2)|1|\n|<ul><li>- [ ] Done</li></ul>|12|[What's Cryptanalysis?](https://uva.onlinejudge.org/index.php?option=onlinejudge&page=show_problem&problem=949)|UVA|||1|\n|<ul><li>- [ ] Done</li></ul>|13|[To Carry or not to Carry](https://uva.onlinejudge.org/index.php?option=onlinejudge&page=show_problem&problem=1410)|UVA|||1|\n|<ul><li>- [ ] Done</li></ul>|14|[Mother bear](https://uva.onlinejudge.org/index.php?option=onlinejudge&page=show_problem&problem=1886)|UVA|||1|\n|<ul><li>- [ ] Done</li></ul>|15|[Party Games](https://icpcarchive.ecs.baylor.edu/index.php?option=onlinejudge&page=show_problem&problem=4207)|Live Archive|2012|North America - Mid-Atlantic USA|1|\n|<ul><li>- [ ] Done</li></ul>|16|[Glass Beads](http://www.spoj.com/problems/BEADS/)|SPOJ|||1|\n|<ul><li>- [ ] Done</li></ul>|17|[One-Two-Three](https://uva.onlinejudge.org/index.php?option=onlinejudge&page=show_problem&problem=3710)|UVA|||1|\n|<ul><li>- [ ] Done</li></ul>|18|[Decode the tape](https://uva.onlinejudge.org/index.php?option=onlinejudge&page=show_problem&problem=1819)|UVA|||1|\n|<ul><li>- [ ] Done</li></ul>|19|[A+B Problem](http://poj.org/problem?id=1000)|PKU|||1|\n|<ul><li>- [ ] Done</li></ul>|20|[Power Strings](https://uva.onlinejudge.org/index.php?option=onlinejudge&page=show_problem&problem=1239)|UVA|||1|\n|<ul><li>- [ ] Done</li></ul>|21|[LetterStrings](http://community.topcoder.com/stat?c=problem_statement&pm=961)|TopCoder||SRM 202 - Div2 easy] (5848)|1|\n|<ul><li>- [ ] Done</li></ul>|22|[Watermelon](http://codeforces.com/problemset/problem/4/A)|Codeforces||Codeforces Beta Round #4 (Div. 2 Only)|1|\n|<ul><li>- [ ] Done</li></ul>|23|[String Cutting](https://icpcarchive.ecs.baylor.edu/index.php?option=onlinejudge&page=show_problem&problem=1670)|Live Archive|2006|Asia - Hanoi|1|\n|<ul><li>- [ ] Done</li></ul>|24|[Two Substrings](http://codeforces.com/problemset/problem/550/A)|Codeforces||Codeforces Round #306 (Div. 2)|1|\n|<ul><li>- [ ] Done</li></ul>|25|[Pangram](http://codeforces.com/problemset/problem/520/A)|Codeforces||Codeforces Round #295 (Div. 2)|1|\n|<ul><li>- [ ] Done</li></ul>|26|[Misha and Changing Handles](http://codeforces.com/problemset/problem/501/B)|Codeforces||Codeforces Round #285 (Div. 2)|1|\n|<ul><li>- [ ] Done</li></ul>|27|[Lecture](http://codeforces.com/problemset/problem/499/B)|Codeforces||Codeforces Round #284 (Div. 2)|1|\n|<ul><li>- [ ] Done</li></ul>|28|[Suffix Structures](http://codeforces.com/problemset/problem/448/B)|Codeforces||Codeforces Round #256 (Div. 2)|1|\n|<ul><li>- [ ] Done</li></ul>|29|[Helpful Maths](http://codeforces.com/problemset/problem/339/A)|Codeforces||Codeforces Round #197 (Div. 2)|1|\n|<ul><li>- [ ] Done</li></ul>|30|[Word Capitalization](http://codeforces.com/problemset/problem/281/A)|Codeforces||Codeforces Round #172 (Div. 2)|1|\n|<ul><li>- [ ] Done</li></ul>|31|[cAPS lOCK](http://codeforces.com/problemset/problem/131/A)|Codeforces||Codeforces Beta Round #95 (Div. 2)|1|\n|<ul><li>- [ ] Done</li></ul>|32|[Different is Good](http://codeforces.com/problemset/problem/672/B)|Codeforces||Codeforces Round #352 (Div. 2)|1|\n|<ul><li>- [ ] Done</li></ul>|33|[Flip Sort](https://uva.onlinejudge.org/index.php?option=onlinejudge&page=show_problem&problem=1268)|UVA|||1|\n|<ul><li>- [ ] Done</li></ul>|34|[Hongcow Learns the Cyclic Shift](http://codeforces.com/problemset/problem/745/A)|Codeforces||Codeforces Round #385 (Div. 2)|1|\n|<ul><li>- [ ] Done</li></ul>|35|[Ostap and Grasshopper](http://codeforces.com/problemset/problem/735/A)|Codeforces||Codeforces Round #382 (Div. 2)|1|\n|<ul><li>- [ ] Done</li></ul>|36|[Mahmoud and Longest Uncommon Subsequence](http://codeforces.com/problemset/problem/766/A)|Codeforces||Codeforces Round #396 (Div. 2)|1|\n|<ul><li>- [ ] Done</li></ul>|37|[Mike and palindrome](http://codeforces.com/problemset/problem/798/A)|Codeforces||Codeforces Round #410 (Div. 2)|1|\n|<ul><li>- [ ] Done</li></ul>|38|[Passwords](http://codeforces.com/problemset/problem/721/B)|Codeforces||Codeforces Round #374 (Div. 2)|1|\n|<ul><li>- [ ] Done</li></ul>|39|[Powers Et Al.](https://uva.onlinejudge.org/index.php?option=onlinejudge&page=show_problem&problem=1456)|UVA|||1|\n|<ul><li>- [ ] Done</li></ul>|40|[Little Elephant and Chess](http://codeforces.com/problemset/problem/259/A)|Codeforces||Codeforces Round #157 (Div. 2)|2|\n|<ul><li>- [ ] Done</li></ul>|41|[Comparing Strings](http://codeforces.com/problemset/problem/186/A)|Codeforces||Codeforces Round #118 (Div. 2)|2|\n|<ul><li>- [ ] Done</li></ul>|42|[Another Problem on Strings](http://codeforces.com/problemset/problem/165/C)|Codeforces||Codeforces Round #112 (Div. 2)|2|\n|<ul><li>- [ ] Done</li></ul>|43|[Password](http://codeforces.com/problemset/problem/126/B)|Codeforces||Codeforces Beta Round #93 (Div. 1 Only) & Codeforces Beta Round #93 (Div. 2 Only)|2|\n|<ul><li>- [ ] Done</li></ul>|44|[Palindromic Times](http://codeforces.com/problemset/problem/108/A)|Codeforces||Codeforces Beta Round #83 (Div. 2 Only)|2|\n|<ul><li>- [ ] Done</li></ul>|45|[Restoring Password](http://codeforces.com/problemset/problem/94/A)|Codeforces||Codeforces Beta Round #76 (Div. 2 Only)|2|\n|<ul><li>- [ ] Done</li></ul>|46|[Sinking Ship](http://codeforces.com/problemset/problem/63/A)|Codeforces||Codeforces Beta Round #59 (Div. 2)|2|\n|<ul><li>- [ ] Done</li></ul>|47|[Message Decoding](https://uva.onlinejudge.org/index.php?option=onlinejudge&page=show_problem&problem=149)|UVA|||2|\n|<ul><li>- [ ] Done</li></ul>|48|[Uncompress](https://uva.onlinejudge.org/index.php?option=onlinejudge&page=show_problem&problem=181)|UVA|||2|\n|<ul><li>- [ ] Done</li></ul>|49|[Chu&#7895;i t&#7915;](http://vn.spoj.com/problems/CHAIN2/)|SPOJ Vietnam|||2|\n|<ul><li>- [ ] Done</li></ul>|50|[Combination](http://codeforces.com/problemset/problem/155/B)|Codeforces||Codeforces Round #109 (Div. 2)|2|\n|<ul><li>- [ ] Done</li></ul>|51|[Strings of Power](http://codeforces.com/problemset/problem/318/B)|Codeforces||Codeforces Round #188 (Div. 2)|2|\n|<ul><li>- [ ] Done</li></ul>|52|[Pattern Finder](https://icpcarchive.ecs.baylor.edu/index.php?option=onlinejudge&page=show_problem&problem=438)|Live Archive|2008|South Pacific|2|\n|<ul><li>- [ ] Done</li></ul>|53|[Strings with Same Letters](p?ID=184)|A2 Online Judge|||2|\n|<ul><li>- [ ] Done</li></ul>|54|[War of the Corporations](http://codeforces.com/problemset/problem/625/B)|Codeforces||Codeforces Round #342 (Div. 2)|2|\n|<ul><li>- [ ] Done</li></ul>|55|[Comparing Two Long Integers](http://codeforces.com/problemset/problem/616/A)|Codeforces||Educational Codeforces Round 5|2|\n|<ul><li>- [ ] Done</li></ul>|56|[Queries on a String](http://codeforces.com/problemset/problem/598/B)|Codeforces||Educational Codeforces Round 1|2|\n|<ul><li>- [ ] Done</li></ul>|57|[Equivalent Strings](http://codeforces.com/problemset/problem/559/B)|Codeforces||Codeforces Round #313 (Div. 1) & Codeforces Round #313 (Div. 2)|2|\n|<ul><li>- [ ] Done</li></ul>|58|[Ohana Cleans Up](http://codeforces.com/problemset/problem/554/B)|Codeforces||Codeforces Round #309 (Div. 2)|2|\n|<ul><li>- [ ] Done</li></ul>|59|[Tanya and Postcard](http://codeforces.com/problemset/problem/518/B)|Codeforces||Codeforces Round #293 (Div. 2)|2|\n|<ul><li>- [ ] Done</li></ul>|60|[Vitaly and Strings](http://codeforces.com/problemset/problem/518/A)|Codeforces||Codeforces Round #293 (Div. 2)|2|\n|<ul><li>- [ ] Done</li></ul>|61|[Mr. Kitayuta's Gift](http://codeforces.com/problemset/problem/505/A)|Codeforces||Codeforces Round #286 (Div. 1) & Codeforces Round #286 (Div. 2) & Codeforces Round #286 (Div. 1) & Codeforces Round #286 (Div. 2)|2|\n|<ul><li>- [ ] Done</li></ul>|62|[Hacking Cypher](http://codeforces.com/problemset/problem/490/C)|Codeforces||Codeforces Round #279 (Div. 2)|2|\n|<ul><li>- [ ] Done</li></ul>|63|[Eevee](http://codeforces.com/problemset/problem/452/A)|Codeforces||MemSQL Start[c]UP 2.0 - Round 1|2|\n|<ul><li>- [ ] Done</li></ul>|64|[Bear and Strings](http://codeforces.com/problemset/problem/385/B)|Codeforces||Codeforces Round #226 (Div. 2)|2|\n|<ul><li>- [ ] Done</li></ul>|65|[String Game](http://codeforces.com/problemset/problem/778/A)|Codeforces||Codeforces Round #402 (Div. 1) & Codeforces Round #402 (Div. 2)|2|\n|<ul><li>- [ ] Done</li></ul>|66|[Valued Keys](http://codeforces.com/problemset/problem/801/B)|Codeforces||Codeforces Round #409 (rated, Div. 2, based on VK Cup 2017 Round 2)|2|\n|<ul><li>- [ ] Done</li></ul>|67|[Mike and strings](http://codeforces.com/problemset/problem/798/B)|Codeforces||Codeforces Round #410 (Div. 2)|2|\n|<ul><li>- [ ] Done</li></ul>|68|[Anagram String](p?ID=132)|A2 Online Judge|||2|\n|<ul><li>- [ ] Done</li></ul>|69|[Find the Format String](https://icpcarchive.ecs.baylor.edu/index.php?option=onlinejudge&page=show_problem&problem=2201)|Live Archive|2008|Asia - Dhaka|2|\n|<ul><li>- [ ] Done</li></ul>|70|[Internet Address](http://codeforces.com/problemset/problem/245/B)|Codeforces||CROC-MBTU 2012, Elimination Round (ACM-ICPC)|3|\n|<ul><li>- [ ] Done</li></ul>|71|[LLPS](http://codeforces.com/problemset/problem/202/A)|Codeforces||Codeforces Round #127 (Div. 2)|3|\n|<ul><li>- [ ] Done</li></ul>|72|[Common Divisors](http://codeforces.com/problemset/problem/182/D)|Codeforces||Codeforces Round #117 (Div. 2)|3|\n|<ul><li>- [ ] Done</li></ul>|73|[Lucky String](http://codeforces.com/problemset/problem/110/B)|Codeforces||Codeforces Beta Round #84 (Div. 2 Only)|3|\n|<ul><li>- [ ] Done</li></ul>|74|[Help Far Away Kingdom](http://codeforces.com/problemset/problem/99/A)|Codeforces||Codeforces Beta Round #78 (Div. 2 Only)|3|\n|<ul><li>- [ ] Done</li></ul>|75|[Haiku](http://codeforces.com/problemset/problem/78/A)|Codeforces||Codeforces Beta Round #70 (Div. 2)|3|\n|<ul><li>- [ ] Done</li></ul>|76|[Petya and Java](http://codeforces.com/problemset/problem/66/A)|Codeforces||Codeforces Beta Round #61 (Div. 2)|3|\n|<ul><li>- [ ] Done</li></ul>|77|[Letter](http://codeforces.com/problemset/problem/43/B)|Codeforces||Codeforces Beta Round #42 (Div. 2)|3|\n|<ul><li>- [ ] Done</li></ul>|78|[Longest Regular Bracket Sequence](http://codeforces.com/problemset/problem/5/C)|Codeforces||Codeforces Beta Round #5|3|\n|<ul><li>- [ ] Done</li></ul>|79|[Phone Numbers](http://codeforces.com/problemset/problem/151/B)|Codeforces||Codeforces Round #107 (Div. 2)|3|\n|<ul><li>- [ ] Done</li></ul>|80|[Tin m&#7853;t](http://vn.spoj.com/problems/SEC/)|SPOJ Vietnam|||3|\n|<ul><li>- [ ] Done</li></ul>|81|[Known Plaintext Attack](https://uva.onlinejudge.org/index.php?option=onlinejudge&page=show_problem&problem=1837)|UVA|||3|\n|<ul><li>- [ ] Done</li></ul>|82|[Secret Word](https://uva.onlinejudge.org/index.php?option=onlinejudge&page=show_problem&problem=3911)|UVA|||3|\n|<ul><li>- [ ] Done</li></ul>|83|[Simple Strings](http://codeforces.com/problemset/problem/665/C)|Codeforces||Educational Codeforces Round 12|3|\n|<ul><li>- [ ] Done</li></ul>|84|[Bear and Compressing](http://codeforces.com/problemset/problem/653/B)|Codeforces||IndiaHacks 2016 - Online Edition (Div. 1 + Div. 2)|3|\n|<ul><li>- [ ] Done</li></ul>|85|[The Text Splitting](http://codeforces.com/problemset/problem/612/A)|Codeforces||Educational Codeforces Round 4|3|\n|<ul><li>- [ ] Done</li></ul>|86|[DNA Alignment](http://codeforces.com/problemset/problem/520/C)|Codeforces||Codeforces Round #295 (Div. 2) & Codeforces Round #295 (Div. 1)|3|\n|<ul><li>- [ ] Done</li></ul>|87|[Watto and Mechanism](http://codeforces.com/problemset/problem/514/C)|Codeforces||Codeforces Round #291 (Div. 2)|3|\n|<ul><li>- [ ] Done</li></ul>|88|[No to Palindromes!](http://codeforces.com/problemset/problem/464/A)|Codeforces||Codeforces Round #265 (Div. 1) & Codeforces Round #265 (Div. 2)|3|\n|<ul><li>- [ ] Done</li></ul>|89|[Good Substrings](http://codeforces.com/problemset/problem/271/D)|Codeforces||Codeforces Round #166 (Div. 2)|3|\n|<ul><li>- [ ] Done</li></ul>|90|[Friendly Int Parser](https://www.urionlinejudge.com.br/judge/en/problems/view/1287)|URI|||3|\n|<ul><li>- [ ] Done</li></ul>|91|[Cloud of Hashtags](http://codeforces.com/problemset/problem/777/D)|Codeforces||Codeforces Round #401 (Div. 2)|3|\n|<ul><li>- [ ] Done</li></ul>|92|[Mahmoud and a Message](http://codeforces.com/problemset/problem/766/C)|Codeforces||Codeforces Round #396 (Div. 2)|3|\n|<ul><li>- [ ] Done</li></ul>|93|[Prime Palindrome](p?ID=366)|A2 Online Judge|||3|\n|<ul><li>- [ ] Done</li></ul>|94|[Whose sentence is it?](http://codeforces.com/problemset/problem/312/A)|Codeforces||Codeforces Round #185 (Div. 2)|3|\n|<ul><li>- [ ] Done</li></ul>|95|[Queries for Number of Palindromes](http://codeforces.com/problemset/problem/245/H)|Codeforces||CROC-MBTU 2012, Elimination Round (ACM-ICPC)|4|\n|<ul><li>- [ ] Done</li></ul>|96|[Palindrome pairs](http://codeforces.com/problemset/problem/159/D)|Codeforces||VK Cup 2012 Qualification Round 2|4|\n|<ul><li>- [ ] Done</li></ul>|97|[String Manipulation 1.0](http://codeforces.com/problemset/problem/159/C)|Codeforces||VK Cup 2012 Qualification Round 2|4|\n|<ul><li>- [ ] Done</li></ul>|98|[Anagram Search](http://codeforces.com/problemset/problem/144/C)|Codeforces||Codeforces Round #103 (Div. 2)|4|\n|<ul><li>- [ ] Done</li></ul>|99|[Help Kingdom of Far Far Away 2](http://codeforces.com/problemset/problem/143/B)|Codeforces||Codeforces Round #102 (Div. 2)|4|\n|<ul><li>- [ ] Done</li></ul>|100|[Hard Work](http://codeforces.com/problemset/problem/61/B)|Codeforces||Codeforces Beta Round #57 (Div. 2)|4|\n|<ul><li>- [ ] Done</li></ul>|101|[Choosing Symbol Pairs](http://codeforces.com/problemset/problem/50/B)|Codeforces||Codeforces Beta Round #47|4|\n|<ul><li>- [ ] Done</li></ul>|102|[Page Numbers](http://codeforces.com/problemset/problem/34/C)|Codeforces||Codeforces Beta Round #34 (Div. 2)|4|\n|<ul><li>- [ ] Done</li></ul>|103|[Train and Peter](http://codeforces.com/problemset/problem/8/A)|Codeforces||Codeforces Beta Round #8|4|\n|<ul><li>- [ ] Done</li></ul>|104|[Center Alignment](http://codeforces.com/problemset/problem/5/B)|Codeforces||Codeforces Beta Round #5|4|\n|<ul><li>- [ ] Done</li></ul>|105|[Matrix Matcher](https://uva.onlinejudge.org/index.php?option=onlinejudge&page=show_problem&problem=1960)|UVA|||4|\n|<ul><li>- [ ] Done</li></ul>|106|[Dinner](http://www.spoj.com/problems/DINGRP/)|SPOJ|||4|\n|<ul><li>- [ ] Done</li></ul>|107|[The Smallest String Concatenation](http://codeforces.com/problemset/problem/632/C)|Codeforces||Educational Codeforces Round 9|4|\n|<ul><li>- [ ] Done</li></ul>|108|[ZgukistringZ](http://codeforces.com/problemset/problem/551/B)|Codeforces||Codeforces Round #307 (Div. 2)|4|\n|<ul><li>- [ ] Done</li></ul>|109|[Tavas and Malekas](http://codeforces.com/problemset/problem/535/D)|Codeforces||Codeforces Round #299 (Div. 2) & Codeforces Round #299 (Div. 1)|4|\n|<ul><li>- [ ] Done</li></ul>|110|[MUH and Cube Walls](http://codeforces.com/problemset/problem/471/D)|Codeforces||Codeforces Round #269 (Div. 2)|4|\n|<ul><li>- [ ] Done</li></ul>|111|[A Lot of Games](http://codeforces.com/problemset/problem/455/B)|Codeforces||Codeforces Round #260 (Div. 1) & Codeforces Round #260 (Div. 2)|4|\n|<ul><li>- [ ] Done</li></ul>|112|[Prefixes and Suffixes](http://codeforces.com/problemset/problem/432/D)|Codeforces||Codeforces Round #246 (Div. 2)|4|\n|<ul><li>- [ ] Done</li></ul>|113|[Pattern](http://codeforces.com/problemset/problem/412/C)|Codeforces||Coder-Strike 2014 - Round 1|4|\n|<ul><li>- [ ] Done</li></ul>|114|[Dima and Text Messages](http://codeforces.com/problemset/problem/358/B)|Codeforces||Codeforces Round #208 (Div. 2)|4|\n|<ul><li>- [ ] Done</li></ul>|115|[Command Line Arguments](http://codeforces.com/problemset/problem/291/B)|Codeforces||Croc Champ 2013 - Qualification Round|4|\n|<ul><li>- [ ] Done</li></ul>|116|[New Problem](http://codeforces.com/problemset/problem/278/B)|Codeforces||Codeforces Round #170 (Div. 2)|4|\n|<ul><li>- [ ] Done</li></ul>|117|[Ancient Prophesy](http://codeforces.com/problemset/problem/260/B)|Codeforces||Codeforces Round #158 (Div. 2)|4|\n|<ul><li>- [ ] Done</li></ul>|118|[African Crossword](http://codeforces.com/problemset/problem/90/B)|Codeforces||Codeforces Beta Round #74 (Div. 2 Only)|4|\n|<ul><li>- [ ] Done</li></ul>|119|[Omar's Bug](p?ID=13)|A2 Online Judge|||4|\n|<ul><li>- [ ] Done</li></ul>|120|[Punctuation](http://codeforces.com/problemset/problem/147/A)|Codeforces||Codeforces Testing Round #4|5|\n|<ul><li>- [ ] Done</li></ul>|121|[Prime Permutation](http://codeforces.com/problemset/problem/123/A)|Codeforces||Codeforces Beta Round #92 (Div. 1 Only) & Codeforces Beta Round #92 (Div. 2 Only)|5|\n|<ul><li>- [ ] Done</li></ul>|122|[Lucky Transformation](http://codeforces.com/problemset/problem/121/B)|Codeforces||Codeforces Beta Round #91 (Div. 1 Only) & Codeforces Beta Round #91 (Div. 2 Only)|5|\n|<ul><li>- [ ] Done</li></ul>|123|[Fancy Number](http://codeforces.com/problemset/problem/118/C)|Codeforces||Codeforces Beta Round #89 (Div. 2)|5|\n|<ul><li>- [ ] Done</li></ul>|124|[Petr#](http://codeforces.com/problemset/problem/113/B)|Codeforces||Codeforces Beta Round #86 (Div. 1 Only) & Codeforces Beta Round #86 (Div. 2 Only)|5|\n|<ul><li>- [ ] Done</li></ul>|125|[Grammar Lessons](http://codeforces.com/problemset/problem/113/A)|Codeforces||Codeforces Beta Round #86 (Div. 1 Only) & Codeforces Beta Round #86 (Div. 2 Only)|5|\n|<ul><li>- [ ] Done</li></ul>|126|[Newspaper Headline](http://codeforces.com/problemset/problem/91/A)|Codeforces||Codeforces Beta Round #75 (Div. 1 Only) & Codeforces Beta Round #75 (Div. 2 Only)|5|\n|<ul><li>- [ ] Done</li></ul>|127|[Sequence Formatting](http://codeforces.com/problemset/problem/81/B)|Codeforces||Yandex.Algorithm Open 2011 Qualification 1|5|\n|<ul><li>- [ ] Done</li></ul>|128|[Facetook Priority Wall](http://codeforces.com/problemset/problem/75/B)|Codeforces||Codeforces Beta Round #67 (Div. 2)|5|\n|<ul><li>- [ ] Done</li></ul>|129|[Sysadmin Bob](http://codeforces.com/problemset/problem/31/B)|Codeforces||Codeforces Beta Round #31 (Div. 2, Codeforces format)|5|\n|<ul><li>- [ ] Done</li></ul>|130|[Palindrome Degree](http://codeforces.com/problemset/problem/7/D)|Codeforces||Codeforces Beta Round #7|5|\n|<ul><li>- [ ] Done</li></ul>|131|[GuessTheSubstring](http://community.topcoder.com/stat?c=problem_statement&pm=11526)|TopCoder||TCO11 Semifinal 1 - Div1 medium] (14649)|5|\n|<ul><li>- [ ] Done</li></ul>|132|[Spy Syndrome 2](http://codeforces.com/problemset/problem/633/C)|Codeforces||Manthan, Codefest 16|5|\n|<ul><li>- [ ] Done</li></ul>|133|[Famil Door and Brackets](http://codeforces.com/problemset/problem/629/C)|Codeforces||Codeforces Round #343 (Div. 2)|5|\n|<ul><li>- [ ] Done</li></ul>|134|[Running Track](http://codeforces.com/problemset/problem/615/C)|Codeforces||Codeforces Round #338 (Div. 2)|5|\n|<ul><li>- [ ] Done</li></ul>|135|[New Year and Ancient Prophecy](http://codeforces.com/problemset/problem/611/D)|Codeforces||Good Bye 2015|5|\n|<ul><li>- [ ] Done</li></ul>|136|[A Simple Task](http://codeforces.com/problemset/problem/558/E)|Codeforces||Codeforces Round #312 (Div. 2)|5|\n|<ul><li>- [ ] Done</li></ul>|137|[Correcting Mistakes](http://codeforces.com/problemset/problem/533/E)|Codeforces||VK Cup 2015 - Round 2 (unofficial online mirror, Div. 1 only)|5|\n|<ul><li>- [ ] Done</li></ul>|138|[Pretty Song](http://codeforces.com/problemset/problem/509/E)|Codeforces||Codeforces Round #289 (Div. 2, ACM ICPC Rules)|5|\n|<ul><li>- [ ] Done</li></ul>|139|[Obsessive String](http://codeforces.com/problemset/problem/494/B)|Codeforces||Codeforces Round #282 (Div. 1) & Codeforces Round #282 (Div. 2)|5|\n|<ul><li>- [ ] Done</li></ul>|140|[Lucky Common Subsequence](http://codeforces.com/problemset/problem/346/B)|Codeforces||Codeforces Round #201 (Div. 1) & Codeforces Round #201 (Div. 2)|5|\n|<ul><li>- [ ] Done</li></ul>|141|[Alyona and Strings](http://codeforces.com/problemset/problem/682/D)|Codeforces||Codeforces Round #358 (Div. 2)|5|\n|<ul><li>- [ ] Done</li></ul>|142|[Restoring IPv6](http://codeforces.com/problemset/problem/250/B)|Codeforces||CROC-MBTU 2012, Final Round (Online version, Div. 2)|6|\n|<ul><li>- [ ] Done</li></ul>|143|[Two Strings](http://codeforces.com/problemset/problem/223/B)|Codeforces||Codeforces Round #138 (Div. 1) & Codeforces Round #138 (Div. 2)|6|\n|<ul><li>- [ ] Done</li></ul>|144|[Wizards and Minimal Spell](http://codeforces.com/problemset/problem/168/B)|Codeforces||Codeforces Round #114 (Div. 2)|6|\n|<ul><li>- [ ] Done</li></ul>|145|[Martian Strings](http://codeforces.com/problemset/problem/149/E)|Codeforces||Codeforces Round #106 (Div. 2)|6|\n|<ul><li>- [ ] Done</li></ul>|146|[String](http://codeforces.com/problemset/problem/128/B)|Codeforces||Codeforces Beta Round #94 (Div. 1 Only) & Codeforces Beta Round #94 (Div. 2 Only)|6|\n|<ul><li>- [ ] Done</li></ul>|147|[Hockey](http://codeforces.com/problemset/problem/95/A)|Codeforces||Codeforces Beta Round #77 (Div. 1 Only) & Codeforces Beta Round #77 (Div. 2 Only)|6|\n|<ul><li>- [ ] Done</li></ul>|148|[Beaver](http://codeforces.com/problemset/problem/79/C)|Codeforces||Codeforces Beta Round #71|6|\n|<ul><li>- [ ] Done</li></ul>|149|[Text Messaging](http://codeforces.com/problemset/problem/70/B)|Codeforces||Codeforces Beta Round #64|6|\n|<ul><li>- [ ] Done</li></ul>|150|[Spelling Check](http://codeforces.com/problemset/problem/39/J)|Codeforces||School Team Contest #1 (Winter Computer School 2010/11)|6|\n|<ul><li>- [ ] Done</li></ul>|151|[Test](http://codeforces.com/problemset/problem/25/E)|Codeforces||Codeforces Beta Round #25 (Div. 2 Only)|6|\n|<ul><li>- [ ] Done</li></ul>|152|[Alphabetic Relation](http://www.spoj.com/problems/ALPHAR/)|SPOJ|||6|\n|<ul><li>- [ ] Done</li></ul>|153|[V&#7847;n ho&#224;n h&#7843;o](http://vn.spoj.com/problems/NPR/)|SPOJ Vietnam|||6|\n|<ul><li>- [ ] Done</li></ul>|154|[Do the Untwist](https://icpcarchive.ecs.baylor.edu/index.php?option=onlinejudge&page=show_problem&problem=3328)|Live Archive|1998|North America - Mid-Central USA|6|\n|<ul><li>- [ ] Done</li></ul>|155|[Unique Strings](http://www.spoj.com/problems/UNICA/)|SPOJ|||6|\n|<ul><li>- [ ] Done</li></ul>|156|[Substitutes in Number](http://codeforces.com/problemset/problem/464/C)|Codeforces||Codeforces Round #265 (Div. 1) & Codeforces Round #265 (Div. 2)|6|\n|<ul><li>- [ ] Done</li></ul>|157|[Making Genome in Berland](http://codeforces.com/problemset/problem/638/B)|Codeforces||VK Cup 2016 - Qualification Round 2|6|\n|<ul><li>- [ ] Done</li></ul>|158|[Messenger](http://codeforces.com/problemset/problem/631/D)|Codeforces||Codeforces Round #344 (Div. 2)|6|\n|<ul><li>- [ ] Done</li></ul>|159|[Kefa and Watch](http://codeforces.com/problemset/problem/580/E)|Codeforces||Codeforces Round #321 (Div. 2)|6|\n|<ul><li>- [ ] Done</li></ul>|160|[Work Group](http://codeforces.com/problemset/problem/533/B)|Codeforces||VK Cup 2015 - Round 2 (unofficial online mirror, Div. 1 only)|6|\n|<ul><li>- [ ] Done</li></ul>|161|[Om Nom and Necklace](http://codeforces.com/problemset/problem/526/D)|Codeforces||ZeptoLab Code Rush 2015|6|\n|<ul><li>- [ ] Done</li></ul>|162|[Dreamoon and Strings](http://codeforces.com/problemset/problem/476/E)|Codeforces||Codeforces Round #272 (Div. 2) & Codeforces Round #272 (Div. 1)|6|\n|<ul><li>- [ ] Done</li></ul>|163|[Fedor and Essay](http://codeforces.com/problemset/problem/467/D)|Codeforces||Codeforces Round #267 (Div. 2)|6|\n|<ul><li>- [ ] Done</li></ul>|164|[Match & Catch](http://codeforces.com/problemset/problem/427/D)|Codeforces||Codeforces Round #244 (Div. 2)|6|\n|<ul><li>- [ ] Done</li></ul>|165|[Sereja and Periods](http://codeforces.com/problemset/problem/314/B)|Codeforces||Codeforces Round #187 (Div. 1) & Codeforces Round #187 (Div. 2)|6|\n|<ul><li>- [ ] Done</li></ul>|166|[Log Stream Analysis](http://codeforces.com/problemset/problem/245/F)|Codeforces||CROC-MBTU 2012, Elimination Round (ACM-ICPC)|7|\n|<ul><li>- [ ] Done</li></ul>|167|[Cyclical Quest](http://codeforces.com/problemset/problem/235/C)|Codeforces||Codeforces Round #146 (Div. 1) & Codeforces Round #146 (Div. 2)|7|\n|<ul><li>- [ ] Done</li></ul>|168|[Vasya and Types](http://codeforces.com/problemset/problem/87/B)|Codeforces||Codeforces Beta Round #73 (Div. 1 Only) & Codeforces Beta Round #73 (Div. 2 Only)|7|\n|<ul><li>- [ ] Done</li></ul>|169|[Logging](http://codeforces.com/problemset/problem/16/D)|Codeforces||Codeforces Beta Round #16 (Div. 2 Only)|7|\n|<ul><li>- [ ] Done</li></ul>|170|[Intellectual Inquiry](http://codeforces.com/problemset/problem/645/E)|Codeforces||CROC 2016 - Elimination Round|7|\n|<ul><li>- [ ] Done</li></ul>|171|[Hostname Aliases](http://codeforces.com/problemset/problem/644/C)|Codeforces||CROC 2016 - Qualification|7|\n|<ul><li>- [ ] Done</li></ul>|172|[Marbles](http://codeforces.com/problemset/problem/607/C)|Codeforces||Codeforces Round #336 (Div. 1) & Codeforces Round #336 (Div. 2)|7|\n|<ul><li>- [ ] Done</li></ul>|173|[Ann and Half-Palindrome](http://codeforces.com/problemset/problem/557/E)|Codeforces||Codeforces Round #311 (Div. 2)|7|\n|<ul><li>- [ ] Done</li></ul>|174|[Encoding](http://codeforces.com/problemset/problem/533/F)|Codeforces||VK Cup 2015 - Round 2 (unofficial online mirror, Div. 1 only)|7|\n|<ul><li>- [ ] Done</li></ul>|175|[Good Substrings](http://codeforces.com/problemset/problem/316/G1)|Codeforces||ABBYY Cup 3.0|7|\n|<ul><li>- [ ] Done</li></ul>|176|[Tree-String Problem](http://codeforces.com/problemset/problem/291/E)|Codeforces||Croc Champ 2013 - Qualification Round|7|\n|<ul><li>- [ ] Done</li></ul>|177|[Vladik and chat](http://codeforces.com/problemset/problem/754/C)|Codeforces||Codeforces Round #390 (Div. 2)|7|\n|<ul><li>- [ ] Done</li></ul>|178|[String Mark](http://codeforces.com/problemset/problem/895/D)|Codeforces||Codeforces Round #448 (Div. 2)|7|\n|<ul><li>- [ ] Done</li></ul>|179|[e-Government](http://codeforces.com/problemset/problem/163/E)|Codeforces||VK Cup 2012 Round 2|8|\n|<ul><li>- [ ] Done</li></ul>|180|[Gnikool Ssalg](http://codeforces.com/problemset/problem/130/B)|Codeforces||Unknown Language Round #4|8|\n|<ul><li>- [ ] Done</li></ul>|181|[Calendar](http://codeforces.com/problemset/problem/58/D)|Codeforces||Codeforces Beta Round #54 (Div. 2)|8|\n|<ul><li>- [ ] Done</li></ul>|182|[Tricky and Clever Password](http://codeforces.com/problemset/problem/30/E)|Codeforces||Codeforces Beta Round #30 (Codeforces format)|8|\n|<ul><li>- [ ] Done</li></ul>|183|[Palisection](http://codeforces.com/problemset/problem/17/E)|Codeforces||Codeforces Beta Round #17|8|\n|<ul><li>- [ ] Done</li></ul>|184|[Three strings](http://codeforces.com/problemset/problem/452/E)|Codeforces||MemSQL Start[c]UP 2.0 - Round 1|8|\n|<ul><li>- [ ] Done</li></ul>|185|[Alphabet Permutations](http://codeforces.com/problemset/problem/610/E)|Codeforces||Codeforces Round #337 (Div. 2)|8|\n|<ul><li>- [ ] Done</li></ul>|186|[Matching Names](http://codeforces.com/problemset/problem/566/A)|Codeforces||VK Cup 2015 - Finals, online mirror|8|\n|<ul><li>- [ ] Done</li></ul>|187|[Mike and Friends](http://codeforces.com/problemset/problem/547/E)|Codeforces||Codeforces Round #305 (Div. 1)|8|\n|<ul><li>- [ ] Done</li></ul>|188|[DZY Loves Strings](http://codeforces.com/problemset/problem/444/D)|Codeforces||Codeforces Round #254 (Div. 1)|8|\n|<ul><li>- [ ] Done</li></ul>|189|[Two Permutations](http://codeforces.com/problemset/problem/213/E)|Codeforces||Codeforces Round #131 (Div. 1)|8|\n|<ul><li>- [ ] Done</li></ul>|190|[Name](http://codeforces.com/problemset/problem/180/D)|Codeforces||Codeforces Round #116 (Div. 2, ACM-ICPC Rules)|8|\n|<ul><li>- [ ] Done</li></ul>|191|[The Next Good String](http://codeforces.com/problemset/problem/196/D)|Codeforces||Codeforces Round #124 (Div. 1)|9|\n|<ul><li>- [ ] Done</li></ul>|192|[String Transformation](http://codeforces.com/problemset/problem/119/D)|Codeforces||Codeforces Beta Round #90|9|\n|<ul><li>- [ ] Done</li></ul>|193|[World of Mouth](http://codeforces.com/problemset/problem/100/D)|Codeforces||Unknown Language Round #3|9|\n|<ul><li>- [ ] Done</li></ul>|194|[Smart Boy](http://codeforces.com/problemset/problem/38/F)|Codeforces||School Personal Contest #1 (Winter Computer School 2010/11) - Codeforces Beta Round #38 (ACM-ICPC Rules)|9|\n|<ul><li>- [ ] Done</li></ul>|195|[Expensive Strings](http://codeforces.com/problemset/problem/616/F)|Codeforces||Educational Codeforces Round 5|9|\n|<ul><li>- [ ] Done</li></ul>|196|[Birthday](http://codeforces.com/problemset/problem/590/E)|Codeforces||Codeforces Round #327 (Div. 1)|9|\n|<ul><li>- [ ] Done</li></ul>|197|[And Yet Another Bracket Sequence](http://codeforces.com/problemset/problem/524/F)|Codeforces||VK Cup 2015 - Round 1|9|\n|<ul><li>- [ ] Done</li></ul>|198|[Dreamoon and Binary](http://codeforces.com/problemset/problem/477/D)|Codeforces||Codeforces Round #272 (Div. 1)|9|\n|<ul><li>- [ ] Done</li></ul>|199|[Xenia and String Problem](http://codeforces.com/problemset/problem/356/E)|Codeforces||Codeforces Round #207 (Div. 1)|9|\n|<ul><li>- [ ] Done</li></ul>|200|[Have You Ever Heard About the Word?](http://codeforces.com/problemset/problem/319/D)|Codeforces||Codeforces Round #189 (Div. 1)|9|\n|<ul><li>- [ ] Done</li></ul>|201|[Representative Sampling](http://codeforces.com/problemset/problem/178/F2)|Codeforces||ABBYY Cup 2.0 - Hard|9|\n|<ul><li>- [ ] Done</li></ul>|202|[Cool Slogans](http://codeforces.com/problemset/problem/700/E)|Codeforces||Codeforces Round #364 (Div. 1)|9|\n|<ul><li>- [ ] Done</li></ul>|203|[Ali goes shopping](http://codeforces.com/problemset/problem/72/E)|Codeforces||Unknown Language Round #2|10|\n|<ul><li>- [ ] Done</li></ul>|204|[Mutation](http://codeforces.com/problemset/problem/76/C)|Codeforces||All-Ukrainian School Olympiad in Informatics|10|\n|<ul><li>- [ ] Done</li></ul>|205|[#dynamic-programming&nbsp;(168)</span>](http://www.spoj.com/problems/tag/)|SPOJ|||10|\n|<ul><li>- [ ] Done</li></ul>|206|[Pattern Matching](https://icpcarchive.ecs.baylor.edu/index.php?option=onlinejudge&page=show_problem&problem=1104)|Live Archive|2004|Asia - Manila|10|\n|<ul><li>- [ ] Done</li></ul>|207|[Puzzle Lover](http://codeforces.com/problemset/problem/613/E)|Codeforces||Codeforces Round #339 (Div. 1)|10|\n|<ul><li>- [ ] Done</li></ul>|208|[Cutting the Line](http://codeforces.com/problemset/problem/594/E)|Codeforces||Codeforces Round #330 (Div. 1)|10|\n|<ul><li>- [ ] Done</li></ul>|209|[Duff is Mad](http://codeforces.com/problemset/problem/587/F)|Codeforces||Codeforces Round #326 (Div. 1)|10|\n|<ul><li>- [ ] Done</li></ul>|210|[Digits of Number Pi](http://codeforces.com/problemset/problem/585/F)|Codeforces||Codeforces Round #325 (Div. 1)|10|\n|<ul><li>- [ ] Done</li></ul>|211|[Suffix Subgroup](http://codeforces.com/problemset/problem/345/G)|Codeforces||Friday the 13th, Programmers Day|10|\n|<ul><li>- [ ] Done</li></ul>|212|[Fibonacci Strings](http://codeforces.com/problemset/problem/177/G2)|Codeforces||ABBYY Cup 2.0 - Easy|10|\n|<ul><li>- [ ] Done</li></ul>|213|[Fibonacci Strings](http://codeforces.com/problemset/problem/177/G1)|Codeforces||ABBYY Cup 2.0 - Easy|10|\n|<ul><li>- [ ] Done</li></ul>|214|[Hongcow Masters the Cyclic Shift](http://codeforces.com/problemset/problem/744/E)|Codeforces||Codeforces Round #385 (Div. 1)|10|\n|<ul><li>- [ ] Done</li></ul>|215|[Rap God](http://codeforces.com/problemset/problem/786/D)|Codeforces||Codeforces Round #406 (Div. 1)|10|\n|<ul><li>- [ ] Done</li></ul>|216|[Wire Crossing](https://uva.onlinejudge.org/index.php?option=onlinejudge&page=show_problem&problem=4645)|UVA|||10|\n"
  },
  {
    "path": "categories/020. combinatorics/README.md",
    "content": "# 020. combinatorics\n\n\n| Checkbox | ID | Problem Name|Online Judge|Year|Contest|Difficulty Level|\n|:---:|:---:|:---:|:---:|:---:|:---:|:---:|\n|<ul><li>- [ ] Done</li></ul>|1|[Marbles](http://www.spoj.com/problems/MARBLES/)|SPOJ|||1|\n|<ul><li>- [ ] Done</li></ul>|2|[Combinations](https://uva.onlinejudge.org/index.php?option=onlinejudge&page=show_problem&problem=305)|UVA|||1|\n|<ul><li>- [ ] Done</li></ul>|3|[Wooden Sticks](http://poj.org/problem?id=1065)|PKU|||1|\n|<ul><li>- [ ] Done</li></ul>|4|[Number Sequence](http://poj.org/problem?id=1019)|PKU|||1|\n|<ul><li>- [ ] Done</li></ul>|5|[DNA Sorting](http://poj.org/problem?id=1007)|PKU|||1|\n|<ul><li>- [ ] Done</li></ul>|6|[Cipher](http://poj.org/problem?id=1026)|PKU|||1|\n|<ul><li>- [ ] Done</li></ul>|7|[Round Numbers](http://poj.org/problem?id=3252)|PKU|||1|\n|<ul><li>- [ ] Done</li></ul>|8|[Paths on a Grid](http://poj.org/problem?id=1942)|PKU|||1|\n|<ul><li>- [ ] Done</li></ul>|9|[Permutations](http://www.spoj.com/problems/PERMUT1/)|SPOJ|||1|\n|<ul><li>- [ ] Done</li></ul>|10|[Triangle Counting](https://uva.onlinejudge.org/index.php?option=onlinejudge&page=show_problem&problem=2396)|UVA|||1|\n|<ul><li>- [ ] Done</li></ul>|11|[Brick Wall Patterns](https://uva.onlinejudge.org/index.php?option=onlinejudge&page=show_problem&problem=841)|UVA|||1|\n|<ul><li>- [ ] Done</li></ul>|12|[Lucky Numbers](http://codeforces.com/problemset/problem/630/C)|Codeforces||Experimental Educational Round: VolBIT Formulas Blitz|1|\n|<ul><li>- [ ] Done</li></ul>|13|[Wet Shark and Bishops](http://codeforces.com/problemset/problem/621/B)|Codeforces||Codeforces Round #341 (Div. 2)|1|\n|<ul><li>- [ ] Done</li></ul>|14|[Chocolate](http://codeforces.com/problemset/problem/617/B)|Codeforces||Codeforces Round #340 (Div. 2)|1|\n|<ul><li>- [ ] Done</li></ul>|15|[Pasha and Stick](http://codeforces.com/problemset/problem/610/A)|Codeforces||Codeforces Round #337 (Div. 2)|1|\n|<ul><li>- [ ] Done</li></ul>|16|[Random Teams](http://codeforces.com/problemset/problem/478/B)|Codeforces||Codeforces Round #273 (Div. 2)|1|\n|<ul><li>- [ ] Done</li></ul>|17|[Dreamoon and WiFi](http://codeforces.com/problemset/problem/476/B)|Codeforces||Codeforces Round #272 (Div. 2)|1|\n|<ul><li>- [ ] Done</li></ul>|18|[Mashmokh and ACM](http://codeforces.com/problemset/problem/414/B)|Codeforces||Codeforces Round #240 (Div. 1) & Codeforces Round #240 (Div. 2)|1|\n|<ul><li>- [ ] Done</li></ul>|19|[Pocket Book](http://codeforces.com/problemset/problem/152/C)|Codeforces||Codeforces Round #108 (Div. 2)|2|\n|<ul><li>- [ ] Done</li></ul>|20|[The World is a Theatre](http://codeforces.com/problemset/problem/131/C)|Codeforces||Codeforces Beta Round #95 (Div. 2)|2|\n|<ul><li>- [ ] Done</li></ul>|21|[Permutations](https://uva.onlinejudge.org/index.php?option=onlinejudge&page=show_problem&problem=882)|UVA|||2|\n|<ul><li>- [ ] Done</li></ul>|22|[Yet another Number Sequence](https://uva.onlinejudge.org/index.php?option=onlinejudge&page=show_problem&problem=1630)|UVA|||2|\n|<ul><li>- [ ] Done</li></ul>|23|[Choose and divide](https://uva.onlinejudge.org/index.php?option=onlinejudge&page=show_problem&problem=1316)|UVA|||2|\n|<ul><li>- [ ] Done</li></ul>|24|[Safe Salutations](https://uva.onlinejudge.org/index.php?option=onlinejudge&page=show_problem&problem=932)|UVA|||2|\n|<ul><li>- [ ] Done</li></ul>|25|[Count the Trees](https://uva.onlinejudge.org/index.php?option=onlinejudge&page=show_problem&problem=948)|UVA|||2|\n|<ul><li>- [ ] Done</li></ul>|26|[How many nodes ?](https://uva.onlinejudge.org/index.php?option=onlinejudge&page=show_problem&problem=1164)|UVA|||2|\n|<ul><li>- [ ] Done</li></ul>|27|[How Many Trees?](https://uva.onlinejudge.org/index.php?option=onlinejudge&page=show_problem&problem=1244)|UVA|||2|\n|<ul><li>- [ ] Done</li></ul>|28|[Trees Made to Order](http://poj.org/problem?id=1095)|PKU|||2|\n|<ul><li>- [ ] Done</li></ul>|29|[Code](http://poj.org/problem?id=1850)|PKU|||2|\n|<ul><li>- [ ] Done</li></ul>|30|[Necklace of Beads](http://poj.org/problem?id=1286)|PKU|||2|\n|<ul><li>- [ ] Done</li></ul>|31|[Let it Bead](http://poj.org/problem?id=2409)|PKU|||2|\n|<ul><li>- [ ] Done</li></ul>|32|[Color](http://poj.org/problem?id=2154)|PKU|||2|\n|<ul><li>- [ ] Done</li></ul>|33|[Candy Distribution](http://poj.org/problem?id=3372)|PKU|||2|\n|<ul><li>- [ ] Done</li></ul>|34|[Ciel and Flowers](http://codeforces.com/problemset/problem/322/B)|Codeforces||Codeforces Round #190 (Div. 2)|2|\n|<ul><li>- [ ] Done</li></ul>|35|[Kolya and Tanya ](http://codeforces.com/problemset/problem/584/B)|Codeforces||Codeforces Round #324 (Div. 2)|2|\n|<ul><li>- [ ] Done</li></ul>|36|[Modulo Sum](http://codeforces.com/problemset/problem/577/B)|Codeforces||Codeforces Round #319 (Div. 2)|2|\n|<ul><li>- [ ] Done</li></ul>|37|[Kyoya and Colored Balls](http://codeforces.com/problemset/problem/553/A)|Codeforces||Codeforces Round #309 (Div. 1) & Codeforces Round #309 (Div. 2)|2|\n|<ul><li>- [ ] Done</li></ul>|38|[Points on Line](http://codeforces.com/problemset/problem/251/A)|Codeforces||Codeforces Round #153 (Div. 1) & Codeforces Round #153 (Div. 2)|2|\n|<ul><li>- [ ] Done</li></ul>|39|[Mr. Kitayuta's Gift](http://codeforces.com/problemset/problem/505/A)|Codeforces||Codeforces Round #286 (Div. 1) & Codeforces Round #286 (Div. 2) & Codeforces Round #286 (Div. 1) & Codeforces Round #286 (Div. 2)|2|\n|<ul><li>- [ ] Done</li></ul>|40|[Leha and Function](http://codeforces.com/problemset/problem/840/A)|Codeforces||Codeforces Round #429 (Div. 1) & Codeforces Round #429 (Div. 2)|2|\n|<ul><li>- [ ] Done</li></ul>|41|[Little Elephant and Interval](http://codeforces.com/problemset/problem/204/A)|Codeforces||Codeforces Round #129 (Div. 1) & Codeforces Round #129 (Div. 2)|3|\n|<ul><li>- [ ] Done</li></ul>|42|[Card Game](http://www.spoj.com/problems/HC12/)|SPOJ|||3|\n|<ul><li>- [ ] Done</li></ul>|43|[Burger](https://uva.onlinejudge.org/index.php?option=onlinejudge&page=show_problem&problem=498)|UVA|||3|\n|<ul><li>- [ ] Done</li></ul>|44|[Binomial Theorem](https://uva.onlinejudge.org/index.php?option=onlinejudge&page=show_problem&problem=3106)|UVA|||3|\n|<ul><li>- [ ] Done</li></ul>|45|[Expression Bracketing](https://uva.onlinejudge.org/index.php?option=onlinejudge&page=show_problem&problem=1253)|UVA|||3|\n|<ul><li>- [ ] Done</li></ul>|46|[A decorative fence](http://poj.org/problem?id=1037)|PKU|||3|\n|<ul><li>- [ ] Done</li></ul>|47|[Lucky tickets](http://poj.org/problem?id=2346)|PKU|||3|\n|<ul><li>- [ ] Done</li></ul>|48|[Cow Sorting](http://poj.org/problem?id=3270)|PKU|||3|\n|<ul><li>- [ ] Done</li></ul>|49|[Magic Bracelet](http://poj.org/problem?id=2888)|PKU|||3|\n|<ul><li>- [ ] Done</li></ul>|50|[Connected Graph](http://poj.org/problem?id=1737)|PKU|||3|\n|<ul><li>- [ ] Done</li></ul>|51|[Longge's problem](http://poj.org/problem?id=2480)|PKU|||3|\n|<ul><li>- [ ] Done</li></ul>|52|[Selection of Personnel](http://codeforces.com/problemset/problem/630/F)|Codeforces||Experimental Educational Round: VolBIT Formulas Blitz|3|\n|<ul><li>- [ ] Done</li></ul>|53|[Hamming Distance Sum](http://codeforces.com/problemset/problem/608/B)|Codeforces||Codeforces Round #336 (Div. 2)|3|\n|<ul><li>- [ ] Done</li></ul>|54|[Ilya and Escalator](http://codeforces.com/problemset/problem/518/D)|Codeforces||Codeforces Round #293 (Div. 2)|3|\n|<ul><li>- [ ] Done</li></ul>|55|[Unbearable Controversy of Being](http://codeforces.com/problemset/problem/489/D)|Codeforces||Codeforces Round #277.5 (Div. 2)|3|\n|<ul><li>- [ ] Done</li></ul>|56|[Pashmak and Buses](http://codeforces.com/problemset/problem/459/C)|Codeforces||Codeforces Round #261 (Div. 2)|3|\n|<ul><li>- [ ] Done</li></ul>|57|[Star](http://codeforces.com/problemset/problem/171/B)|Codeforces||April Fools Day Contest|4|\n|<ul><li>- [ ] Done</li></ul>|58|[Quantity of Strings](http://codeforces.com/problemset/problem/150/B)|Codeforces||Codeforces Round #107 (Div. 1) & Codeforces Round #107 (Div. 2)|4|\n|<ul><li>- [ ] Done</li></ul>|59|[Dima and Sequence](http://codeforces.com/problemset/problem/272/B)|Codeforces||Codeforces Round #167 (Div. 2)|4|\n|<ul><li>- [ ] Done</li></ul>|60|[FUN WITH NUMBERS](http://www.spoj.com/problems/ACMCEG2A/)|SPOJ|||4|\n|<ul><li>- [ ] Done</li></ul>|61|[CARDS](http://poj.org/problem?id=1721)|PKU|||4|\n|<ul><li>- [ ] Done</li></ul>|62|[Leonardo's Notebook](http://poj.org/problem?id=3128)|PKU|||4|\n|<ul><li>- [ ] Done</li></ul>|63|[The Stable Marriage Problem](http://poj.org/problem?id=3487)|PKU|||4|\n|<ul><li>- [ ] Done</li></ul>|64|[Difference between Triplets](http://poj.org/problem?id=3244)|PKU|||4|\n|<ul><li>- [ ] Done</li></ul>|65|[Weather](http://codeforces.com/problemset/problem/234/C)|Codeforces||Codeforces Round #145 (Div. 2, ACM-ICPC Rules)|4|\n|<ul><li>- [ ] Done</li></ul>|66|[Benches](http://codeforces.com/problemset/problem/630/H)|Codeforces||Experimental Educational Round: VolBIT Formulas Blitz|4|\n|<ul><li>- [ ] Done</li></ul>|67|[Gerald and Giant Chess](http://codeforces.com/problemset/problem/559/C)|Codeforces||Codeforces Round #313 (Div. 1) & Codeforces Round #313 (Div. 2)|4|\n|<ul><li>- [ ] Done</li></ul>|68|[Vanya and Triangles](http://codeforces.com/problemset/problem/552/D)|Codeforces||Codeforces Round #308 (Div. 2)|4|\n|<ul><li>- [ ] Done</li></ul>|69|[New Year Santa Network](http://codeforces.com/problemset/problem/500/D)|Codeforces||Good Bye 2014|4|\n|<ul><li>- [ ] Done</li></ul>|70|[Inna and Nine](http://codeforces.com/problemset/problem/374/B)|Codeforces||Codeforces Round #220 (Div. 2)|4|\n|<ul><li>- [ ] Done</li></ul>|71|[Matrix](http://codeforces.com/problemset/problem/364/A)|Codeforces||Codeforces Round #213 (Div. 1) & Codeforces Round #213 (Div. 2)|4|\n|<ul><li>- [ ] Done</li></ul>|72|[Tourist Problem](http://codeforces.com/problemset/problem/340/C)|Codeforces||Codeforces Round #198 (Div. 2) & Codeforces Round #198 (Div. 1)|4|\n|<ul><li>- [ ] Done</li></ul>|73|[Magic Five](http://codeforces.com/problemset/problem/327/C)|Codeforces||Codeforces Round #191 (Div. 2)|4|\n|<ul><li>- [ ] Done</li></ul>|74|[Beautiful Numbers](http://codeforces.com/problemset/problem/300/C)|Codeforces||Codeforces Round #181 (Div. 2)|4|\n|<ul><li>- [ ] Done</li></ul>|75|[Polo the Penguin and Houses ](http://codeforces.com/problemset/problem/288/B)|Codeforces||Codeforces Round #177 (Div. 1)|4|\n|<ul><li>- [ ] Done</li></ul>|76|[The Intriguing Obsession](http://codeforces.com/problemset/problem/869/C)|Codeforces||Codeforces Round #439 (Div. 2)|4|\n|<ul><li>- [ ] Done</li></ul>|77|[Ralph And His Magic Field](http://codeforces.com/problemset/problem/894/B)|Codeforces||Codeforces Round #447 (Div. 2)|4|\n|<ul><li>- [ ] Done</li></ul>|78|[Directed Roads](http://codeforces.com/problemset/problem/711/D)|Codeforces||Codeforces Round #369 (Div. 2)|4|\n|<ul><li>- [ ] Done</li></ul>|79|[Cycles](http://codeforces.com/problemset/problem/232/A)|Codeforces||Codeforces Round #144 (Div. 1) & Codeforces Round #144 (Div. 2)|5|\n|<ul><li>- [ ] Done</li></ul>|80|[Games with Rectangle](http://codeforces.com/problemset/problem/128/C)|Codeforces||Codeforces Beta Round #94 (Div. 1 Only) & Codeforces Beta Round #94 (Div. 2 Only)|5|\n|<ul><li>- [ ] Done</li></ul>|81|[Permutations](http://codeforces.com/problemset/problem/124/B)|Codeforces||Codeforces Beta Round #92 (Div. 2 Only)|5|\n|<ul><li>- [ ] Done</li></ul>|82|[Basketball Team](http://codeforces.com/problemset/problem/107/B)|Codeforces||Codeforces Beta Round #83 (Div. 1 Only) & Codeforces Beta Round #83 (Div. 2 Only)|5|\n|<ul><li>- [ ] Done</li></ul>|83|[How many trees?](http://codeforces.com/problemset/problem/9/D)|Codeforces||Codeforces Beta Round #9 (Div. 2 Only)|5|\n|<ul><li>- [ ] Done</li></ul>|84|[Prime Factors](https://icpcarchive.ecs.baylor.edu/index.php?option=onlinejudge&page=show_problem&problem=3407)|Live Archive|1997|North America - East Central NA|5|\n|<ul><li>- [ ] Done</li></ul>|85|[The shuffle Problem](http://poj.org/problem?id=3590)|PKU|||5|\n|<ul><li>- [ ] Done</li></ul>|86|[Regetni](http://poj.org/problem?id=1809)|PKU|||5|\n|<ul><li>- [ ] Done</li></ul>|87|[Jerry's Protest](http://codeforces.com/problemset/problem/626/D)|Codeforces||8VC Venture Cup 2016 - Elimination Round|5|\n|<ul><li>- [ ] Done</li></ul>|88|[Lengthening Sticks](http://codeforces.com/problemset/problem/571/A)|Codeforces||Codeforces Round #317 [AimFund Thanks-Round] (Div. 1) & Codeforces Round #317 [AimFund Thanks-Round] (Div. 2)|5|\n|<ul><li>- [ ] Done</li></ul>|89|[Symmetric and Transitive](http://codeforces.com/problemset/problem/568/B)|Codeforces||Codeforces Round #315 (Div. 1) & Codeforces Round #315 (Div. 2)|5|\n|<ul><li>- [ ] Done</li></ul>|90|[Vitaly and Cycle](http://codeforces.com/problemset/problem/557/D)|Codeforces||Codeforces Round #311 (Div. 2)|5|\n|<ul><li>- [ ] Done</li></ul>|91|[Kyoya and Permutation](http://codeforces.com/problemset/problem/553/B)|Codeforces||Codeforces Round #309 (Div. 1) & Codeforces Round #309 (Div. 2)|5|\n|<ul><li>- [ ] Done</li></ul>|92|[Increase Sequence](http://codeforces.com/problemset/problem/466/D)|Codeforces||Codeforces Round #266 (Div. 2)|5|\n|<ul><li>- [ ] Done</li></ul>|93|[Mashmokh and Reverse Operation](http://codeforces.com/problemset/problem/414/C)|Codeforces||Codeforces Round #240 (Div. 1) & Codeforces Round #240 (Div. 2)|5|\n|<ul><li>- [ ] Done</li></ul>|94|[Roman and Numbers](http://codeforces.com/problemset/problem/401/D)|Codeforces||Codeforces Round #235 (Div. 2)|5|\n|<ul><li>- [ ] Done</li></ul>|95|[Two Heaps](http://codeforces.com/problemset/problem/353/B)|Codeforces||Codeforces Round #205 (Div. 2)|5|\n|<ul><li>- [ ] Done</li></ul>|96|[Jeff and Furik](http://codeforces.com/problemset/problem/351/B)|Codeforces||Codeforces Round #204 (Div. 1) & Codeforces Round #204 (Div. 2)|5|\n|<ul><li>- [ ] Done</li></ul>|97|[Iahub and Permutations](http://codeforces.com/problemset/problem/340/E)|Codeforces||Codeforces Round #198 (Div. 2) & Codeforces Round #198 (Div. 1)|5|\n|<ul><li>- [ ] Done</li></ul>|98|[Malek Dance Club](http://codeforces.com/problemset/problem/319/A)|Codeforces||Codeforces Round #189 (Div. 1) & Codeforces Round #189 (Div. 2)|5|\n|<ul><li>- [ ] Done</li></ul>|99|[Shaass and Lights](http://codeforces.com/problemset/problem/294/C)|Codeforces||Codeforces Round #178 (Div. 2)|5|\n|<ul><li>- [ ] Done</li></ul>|100|[Dima and Two Sequences](http://codeforces.com/problemset/problem/272/D)|Codeforces||Codeforces Round #167 (Div. 2) & Codeforces Round #167 (Div. 1)|5|\n|<ul><li>- [ ] Done</li></ul>|101|[Weird journey](http://codeforces.com/problemset/problem/788/B)|Codeforces||Codeforces Round #407 (Div. 1) & Codeforces Round #407 (Div. 2)|5|\n|<ul><li>- [ ] Done</li></ul>|102|[Square Subsets](http://codeforces.com/problemset/problem/895/C)|Codeforces||Codeforces Round #448 (Div. 2)|5|\n|<ul><li>- [ ] Done</li></ul>|103|[Winter is here](http://codeforces.com/problemset/problem/839/D)|Codeforces||Codeforces Round #428 (Div. 2)|5|\n|<ul><li>- [ ] Done</li></ul>|104|[Anton and School - 2](http://codeforces.com/problemset/problem/785/D)|Codeforces||Codeforces Round #404 (Div. 2)|5|\n|<ul><li>- [ ] Done</li></ul>|105|[Little Elephant and Elections](http://codeforces.com/problemset/problem/258/B)|Codeforces||Codeforces Round #157 (Div. 1) & Codeforces Round #157 (Div. 2)|6|\n|<ul><li>- [ ] Done</li></ul>|106|[Table](http://codeforces.com/problemset/problem/232/B)|Codeforces||Codeforces Round #144 (Div. 1) & Codeforces Round #144 (Div. 2)|6|\n|<ul><li>- [ ] Done</li></ul>|107|[Triangles](http://codeforces.com/problemset/problem/229/C)|Codeforces||Codeforces Round #142 (Div. 1) & Codeforces Round #142 (Div. 2)|6|\n|<ul><li>- [ ] Done</li></ul>|108|[Partial Sums](http://codeforces.com/problemset/problem/223/C)|Codeforces||Codeforces Round #138 (Div. 1) & Codeforces Round #138 (Div. 2)|6|\n|<ul><li>- [ ] Done</li></ul>|109|[Numbers](http://codeforces.com/problemset/problem/213/B)|Codeforces||Codeforces Round #131 (Div. 1) & Codeforces Round #131 (Div. 2)|6|\n|<ul><li>- [ ] Done</li></ul>|110|[Cipher](http://codeforces.com/problemset/problem/156/C)|Codeforces||Codeforces Round #110 (Div. 1) & Codeforces Round #110 (Div. 2)|6|\n|<ul><li>- [ ] Done</li></ul>|111|[Lucky Subsequence](http://codeforces.com/problemset/problem/145/C)|Codeforces||Codeforces Round #104 (Div. 1) & Codeforces Round #104 (Div. 2)|6|\n|<ul><li>- [ ] Done</li></ul>|112|[Lucky Permutation](http://codeforces.com/problemset/problem/121/C)|Codeforces||Codeforces Beta Round #91 (Div. 1 Only) & Codeforces Beta Round #91 (Div. 2 Only)|6|\n|<ul><li>- [ ] Done</li></ul>|113|[Array](http://codeforces.com/problemset/problem/57/C)|Codeforces||Codeforces Beta Round #53|6|\n|<ul><li>- [ ] Done</li></ul>|114|[ETS Problem setting](https://uva.onlinejudge.org/index.php?option=onlinejudge&page=show_problem&problem=2425)|UVA|||6|\n|<ul><li>- [ ] Done</li></ul>|115|[Birthday Cake](http://poj.org/problem?id=2515)|PKU|||6|\n|<ul><li>- [ ] Done</li></ul>|116|[Sum of powers](http://poj.org/problem?id=1707)|PKU|||6|\n|<ul><li>- [ ] Done</li></ul>|117|[Parking Lot](http://codeforces.com/problemset/problem/630/I)|Codeforces||Experimental Educational Round: VolBIT Formulas Blitz|6|\n|<ul><li>- [ ] Done</li></ul>|118|[Challenge Pennants](http://codeforces.com/problemset/problem/630/G)|Codeforces||Experimental Educational Round: VolBIT Formulas Blitz|6|\n|<ul><li>- [ ] Done</li></ul>|119|[Bots](http://codeforces.com/problemset/problem/575/H)|Codeforces||Bubble Cup 8 - Finals [Online Mirror]|6|\n|<ul><li>- [ ] Done</li></ul>|120|[Pig and Palindromes](http://codeforces.com/problemset/problem/570/E)|Codeforces||Codeforces Round #316 (Div. 2)|6|\n|<ul><li>- [ ] Done</li></ul>|121|[GukiZ and Binary Operations](http://codeforces.com/problemset/problem/551/D)|Codeforces||Codeforces Round #307 (Div. 2)|6|\n|<ul><li>- [ ] Done</li></ul>|122|[Pluses everywhere](http://codeforces.com/problemset/problem/520/E)|Codeforces||Codeforces Round #295 (Div. 2) & Codeforces Round #295 (Div. 1)|6|\n|<ul><li>- [ ] Done</li></ul>|123|[Special Matrices](http://codeforces.com/problemset/problem/489/F)|Codeforces||Codeforces Round #277.5 (Div. 2)|6|\n|<ul><li>- [ ] Done</li></ul>|124|[Magic Trick](http://codeforces.com/problemset/problem/452/C)|Codeforces||MemSQL Start[c]UP 2.0 - Round 1|6|\n|<ul><li>- [ ] Done</li></ul>|125|[Devu and Flowers](http://codeforces.com/problemset/problem/451/E)|Codeforces||Codeforces Round #258 (Div. 2)|6|\n|<ul><li>- [ ] Done</li></ul>|126|[Jzzhu and Numbers](http://codeforces.com/problemset/problem/449/D)|Codeforces||Codeforces Round #257 (Div. 1)|6|\n|<ul><li>- [ ] Done</li></ul>|127|[Random Task](http://codeforces.com/problemset/problem/431/D)|Codeforces||Codeforces Round #247 (Div. 2)|6|\n|<ul><li>- [ ] Done</li></ul>|128|[Compartments](http://codeforces.com/problemset/problem/356/C)|Codeforces||Codeforces Round #207 (Div. 1) & Codeforces Round #207 (Div. 2)|6|\n|<ul><li>- [ ] Done</li></ul>|129|[Greg and Friends](http://codeforces.com/problemset/problem/295/C)|Codeforces||Codeforces Round #179 (Div. 1) & Codeforces Round #179 (Div. 2)|6|\n|<ul><li>- [ ] Done</li></ul>|130|[Permutation Sum](http://codeforces.com/problemset/problem/285/D)|Codeforces||Codeforces Round #175 (Div. 2)|6|\n|<ul><li>- [ ] Done</li></ul>|131|[Little Elephant and LCM](http://codeforces.com/problemset/problem/258/C)|Codeforces||Codeforces Round #157 (Div. 1) & Codeforces Round #157 (Div. 2)|6|\n|<ul><li>- [ ] Done</li></ul>|132|[Unusual Sequences](http://codeforces.com/problemset/problem/900/D)|Codeforces||Codeforces Round #450 (Div. 2)|6|\n|<ul><li>- [ ] Done</li></ul>|133|[Mike and Geometry Problem](http://codeforces.com/problemset/problem/689/E)|Codeforces||Codeforces Round #361 (Div. 2)|6|\n|<ul><li>- [ ] Done</li></ul>|134|[Memory and Scores](http://codeforces.com/problemset/problem/712/D)|Codeforces||Codeforces Round #370 (Div. 2)|6|\n|<ul><li>- [ ] Done</li></ul>|135|[The table](http://codeforces.com/problemset/problem/226/D)|Codeforces||Codeforces Round #140 (Div. 1)|7|\n|<ul><li>- [ ] Done</li></ul>|136|[Chessboard Billiard](http://codeforces.com/problemset/problem/74/C)|Codeforces||Codeforces Beta Round #68|7|\n|<ul><li>- [ ] Done</li></ul>|137|[Right Triangles](http://codeforces.com/problemset/problem/52/B)|Codeforces||Codeforces Testing Round #1|7|\n|<ul><li>- [ ] Done</li></ul>|138|[On Number of Decompositions into Multipliers](http://codeforces.com/problemset/problem/396/A)|Codeforces||Codeforces Round #232 (Div. 1) & Codeforces Round #232 (Div. 2)|7|\n|<ul><li>- [ ] Done</li></ul>|139|[Plato's Blocks](http://poj.org/problem?id=1052)|PKU|||7|\n|<ul><li>- [ ] Done</li></ul>|140|[?????](http://poj.org/problem?id=1831)|PKU|||7|\n|<ul><li>- [ ] Done</li></ul>|141|[Fence Divercity](http://codeforces.com/problemset/problem/659/G)|Codeforces||Codeforces Round #346 (Div. 2)|7|\n|<ul><li>- [ ] Done</li></ul>|142|[Square Root of Permutation](http://codeforces.com/problemset/problem/612/E)|Codeforces||Educational Codeforces Round 4|7|\n|<ul><li>- [ ] Done</li></ul>|143|[Devu and Birthday Celebration](http://codeforces.com/problemset/problem/439/E)|Codeforces||Codeforces Round #251 (Div. 2)|7|\n|<ul><li>- [ ] Done</li></ul>|144|[Beautiful Pairs of Numbers](http://codeforces.com/problemset/problem/403/D)|Codeforces||Codeforces Round #236 (Div. 1)|7|\n|<ul><li>- [ ] Done</li></ul>|145|[Levko and Strings](http://codeforces.com/problemset/problem/360/C)|Codeforces||Codeforces Round #210 (Div. 1) & Codeforces Round #210 (Div. 2)|7|\n|<ul><li>- [ ] Done</li></ul>|146|[Vasily the Bear and Beautiful Strings](http://codeforces.com/problemset/problem/336/D)|Codeforces||Codeforces Round #195 (Div. 2)|7|\n|<ul><li>- [ ] Done</li></ul>|147|[Axis Walking](http://codeforces.com/problemset/problem/327/E)|Codeforces||Codeforces Round #191 (Div. 2)|7|\n|<ul><li>- [ ] Done</li></ul>|148|[Yaroslav and Two Strings](http://codeforces.com/problemset/problem/296/B)|Codeforces||Codeforces Round #179 (Div. 2)|7|\n|<ul><li>- [ ] Done</li></ul>|149|[Dima and Horses](http://codeforces.com/problemset/problem/272/E)|Codeforces||Codeforces Round #167 (Div. 2) & Codeforces Round #167 (Div. 1)|7|\n|<ul><li>- [ ] Done</li></ul>|150|[Ski Base](http://codeforces.com/problemset/problem/91/C)|Codeforces||Codeforces Beta Round #75 (Div. 1 Only) & Codeforces Beta Round #75 (Div. 2 Only)|7|\n|<ul><li>- [ ] Done</li></ul>|151|[On the Bench](http://codeforces.com/problemset/problem/840/C)|Codeforces||Codeforces Round #429 (Div. 1) & Codeforces Round #429 (Div. 2)|7|\n|<ul><li>- [ ] Done</li></ul>|152|[String Mark](http://codeforces.com/problemset/problem/895/D)|Codeforces||Codeforces Round #448 (Div. 2)|7|\n|<ul><li>- [ ] Done</li></ul>|153|[Number Challenge](http://codeforces.com/problemset/problem/235/E)|Codeforces||Codeforces Round #146 (Div. 1)|8|\n|<ul><li>- [ ] Done</li></ul>|154|[Gifts](http://codeforces.com/problemset/problem/229/E)|Codeforces||Codeforces Round #142 (Div. 1)|8|\n|<ul><li>- [ ] Done</li></ul>|155|[Periodical Numbers](http://codeforces.com/problemset/problem/215/E)|Codeforces||Codeforces Round #132 (Div. 2)|8|\n|<ul><li>- [ ] Done</li></ul>|156|[Playing with Superglue](http://codeforces.com/problemset/problem/176/C)|Codeforces||Croc Champ 2012 - Round 2|8|\n|<ul><li>- [ ] Done</li></ul>|157|[Clues](http://codeforces.com/problemset/problem/156/D)|Codeforces||Codeforces Round #110 (Div. 1)|8|\n|<ul><li>- [ ] Done</li></ul>|158|[New Year Garland](http://codeforces.com/problemset/problem/140/E)|Codeforces||Codeforces Round #100|8|\n|<ul><li>- [ ] Done</li></ul>|159|[Brackets](http://codeforces.com/problemset/problem/123/C)|Codeforces||Codeforces Beta Round #92 (Div. 1 Only) & Codeforces Beta Round #92 (Div. 2 Only)|8|\n|<ul><li>- [ ] Done</li></ul>|160|[Petya and Coloring](http://codeforces.com/problemset/problem/111/D)|Codeforces||Codeforces Beta Round #85 (Div. 1 Only)|8|\n|<ul><li>- [ ] Done</li></ul>|161|[Bath Queue](http://codeforces.com/problemset/problem/28/C)|Codeforces||Codeforces Beta Round #28 (Codeforces format)|8|\n|<ul><li>- [ ] Done</li></ul>|162|[Tickets](http://codeforces.com/problemset/problem/26/D)|Codeforces||Codeforces Beta Round #26 (Codeforces format)|8|\n|<ul><li>- [ ] Done</li></ul>|163|[Parquet](http://codeforces.com/problemset/problem/26/C)|Codeforces||Codeforces Beta Round #26 (Codeforces format)|8|\n|<ul><li>- [ ] Done</li></ul>|164|[Positions in Permutations](http://codeforces.com/problemset/problem/285/E)|Codeforces||Codeforces Round #175 (Div. 2)|8|\n|<ul><li>- [ ] Done</li></ul>|165|[Hexagonal Routes](http://poj.org/problem?id=1792)|PKU|||8|\n|<ul><li>- [ ] Done</li></ul>|166|[Different Subsets For All Tuples](http://codeforces.com/problemset/problem/660/E)|Codeforces||Educational Codeforces Round 11|8|\n|<ul><li>- [ ] Done</li></ul>|167|[Cowslip Collections](http://codeforces.com/problemset/problem/645/F)|Codeforces||CROC 2016 - Elimination Round|8|\n|<ul><li>- [ ] Done</li></ul>|168|[Misha and Palindrome Degree](http://codeforces.com/problemset/problem/501/E)|Codeforces||Codeforces Round #285 (Div. 2) & Codeforces Round #285 (Div. 1)|8|\n|<ul><li>- [ ] Done</li></ul>|169|[The Child and Binary Tree](http://codeforces.com/problemset/problem/438/E)|Codeforces||Codeforces Round #250 (Div. 1)|8|\n|<ul><li>- [ ] Done</li></ul>|170|[Vowels](http://codeforces.com/problemset/problem/383/E)|Codeforces||Codeforces Round #225 (Div. 1)|8|\n|<ul><li>- [ ] Done</li></ul>|171|[Sereja and Intervals](http://codeforces.com/problemset/problem/367/E)|Codeforces||Codeforces Round #215 (Div. 1)|8|\n|<ul><li>- [ ] Done</li></ul>|172|[Black-and-White Cube](http://codeforces.com/problemset/problem/323/A)|Codeforces||Testing Round #7|8|\n|<ul><li>- [ ] Done</li></ul>|173|[Olya and Graph](http://codeforces.com/problemset/problem/305/D)|Codeforces||Codeforces Round #184 (Div. 2)|8|\n|<ul><li>- [ ] Done</li></ul>|174|[Greg and Caves](http://codeforces.com/problemset/problem/295/D)|Codeforces||Codeforces Round #179 (Div. 1)|8|\n|<ul><li>- [ ] Done</li></ul>|175|[Distinct Paths](http://codeforces.com/problemset/problem/293/B)|Codeforces||Croc Champ 2013 - Round 2|8|\n|<ul><li>- [ ] Done</li></ul>|176|[Polo the Penguin and Trees ](http://codeforces.com/problemset/problem/288/D)|Codeforces||Codeforces Round #177 (Div. 1)|8|\n|<ul><li>- [ ] Done</li></ul>|177|[Cow Tennis Tournament](http://codeforces.com/problemset/problem/283/E)|Codeforces||Codeforces Round #174 (Div. 1)|8|\n|<ul><li>- [ ] Done</li></ul>|178|[Number Table](http://codeforces.com/problemset/problem/40/E)|Codeforces||Codeforces Beta Round #39|8|\n|<ul><li>- [ ] Done</li></ul>|179|[Codeword](http://codeforces.com/problemset/problem/666/C)|Codeforces||Codeforces Round #349 (Div. 1)|8|\n|<ul><li>- [ ] Done</li></ul>|180|[Find a car](http://codeforces.com/problemset/problem/809/C)|Codeforces||Codeforces Round #415 (Div. 1) & Codeforces Round #415 (Div. 2)|8|\n|<ul><li>- [ ] Done</li></ul>|181|[An unavoidable detour for home](http://codeforces.com/problemset/problem/814/E)|Codeforces||Codeforces Round #418 (Div. 2)|8|\n|<ul><li>- [ ] Done</li></ul>|182|[Little Elephant and Triangle](http://codeforces.com/problemset/problem/220/D)|Codeforces||Codeforces Round #136 (Div. 1)|9|\n|<ul><li>- [ ] Done</li></ul>|183|[Bitonix' Patrol](http://codeforces.com/problemset/problem/217/D)|Codeforces||Codeforces Round #134 (Div. 1)|9|\n|<ul><li>- [ ] Done</li></ul>|184|[Thoroughly Bureaucratic Organization](http://codeforces.com/problemset/problem/201/E)|Codeforces||Codeforces Round #127 (Div. 1)|9|\n|<ul><li>- [ ] Done</li></ul>|185|[Lucky Pair](http://codeforces.com/problemset/problem/145/D)|Codeforces||Codeforces Round #104 (Div. 1)|9|\n|<ul><li>- [ ] Done</li></ul>|186|[Pentagon](http://codeforces.com/problemset/problem/51/E)|Codeforces||Codeforces Beta Round #48|9|\n|<ul><li>- [ ] Done</li></ul>|187|[Lesson Timetable](http://codeforces.com/problemset/problem/37/D)|Codeforces||Codeforces Beta Round #37|9|\n|<ul><li>- [ ] Done</li></ul>|188|[Triangles](http://codeforces.com/problemset/problem/15/E)|Codeforces||Codeforces Beta Round #15|9|\n|<ul><li>- [ ] Done</li></ul>|189|[Flags](http://codeforces.com/problemset/problem/93/D)|Codeforces||Codeforces Beta Round #76 (Div. 1 Only)|9|\n|<ul><li>- [ ] Done</li></ul>|190|[Move by Prime](http://codeforces.com/problemset/problem/653/G)|Codeforces||IndiaHacks 2016 - Online Edition (Div. 1 + Div. 2)|9|\n|<ul><li>- [ ] Done</li></ul>|191|[Transforming Sequence](http://codeforces.com/problemset/problem/623/E)|Codeforces||AIM Tech Round (Div. 1)|9|\n|<ul><li>- [ ] Done</li></ul>|192|[Present for Vitalik the Philatelist ](http://codeforces.com/problemset/problem/585/E)|Codeforces||Codeforces Round #325 (Div. 1)|9|\n|<ul><li>- [ ] Done</li></ul>|193|[Randomizer](http://codeforces.com/problemset/problem/559/D)|Codeforces||Codeforces Round #313 (Div. 1)|9|\n|<ul><li>- [ ] Done</li></ul>|194|[Pasha and Pipe](http://codeforces.com/problemset/problem/518/F)|Codeforces||Codeforces Round #293 (Div. 2)|9|\n|<ul><li>- [ ] Done</li></ul>|195|[Random Function and Tree](http://codeforces.com/problemset/problem/482/D)|Codeforces||Codeforces Round #275 (Div. 1)|9|\n|<ul><li>- [ ] Done</li></ul>|196|[On Sum of Number of Inversions in Permutations](http://codeforces.com/problemset/problem/396/D)|Codeforces||Codeforces Round #232 (Div. 1)|9|\n|<ul><li>- [ ] Done</li></ul>|197|[Yet Another Number Sequence](http://codeforces.com/problemset/problem/392/C)|Codeforces||Codeforces Round #230 (Div. 1) & Codeforces Round #230 (Div. 2)|9|\n|<ul><li>- [ ] Done</li></ul>|198|[Ksenia and Combinatorics](http://codeforces.com/problemset/problem/382/E)|Codeforces||Codeforces Round #224 (Div. 2)|9|\n|<ul><li>- [ ] Done</li></ul>|199|[Sereja and Cinema](http://codeforces.com/problemset/problem/380/D)|Codeforces||Codeforces Round #223 (Div. 1)|9|\n|<ul><li>- [ ] Done</li></ul>|200|[The Red Button](http://codeforces.com/problemset/problem/325/E)|Codeforces||MemSQL start[c]up Round 1|9|\n|<ul><li>- [ ] Done</li></ul>|201|[White, Black and White Again](http://codeforces.com/problemset/problem/306/C)|Codeforces||Testing Round #6|9|\n|<ul><li>- [ ] Done</li></ul>|202|[Research Rover](http://codeforces.com/problemset/problem/722/E)|Codeforces||Intel Code Challenge Elimination Round (Div. 1 + Div. 2, combined)|9|\n|<ul><li>- [ ] Done</li></ul>|203|[Singer House](http://codeforces.com/problemset/problem/830/D)|Codeforces||Codeforces Round #424 (Div. 1, rated, based on VK Cup Finals)|9|\n|<ul><li>- [ ] Done</li></ul>|204|[Karen and Cards](http://codeforces.com/problemset/problem/815/D)|Codeforces||Codeforces Round #419 (Div. 1)|9|\n|<ul><li>- [ ] Done</li></ul>|205|[Lust](http://codeforces.com/problemset/problem/891/E)|Codeforces||Codeforces Round #446 (Div. 1)|9|\n|<ul><li>- [ ] Done</li></ul>|206|[Weak Subsequence](http://codeforces.com/problemset/problem/135/E)|Codeforces||Codeforces Beta Round #97 (Div. 1)|10|\n|<ul><li>- [ ] Done</li></ul>|207|[Sleeping](http://codeforces.com/problemset/problem/113/E)|Codeforces||Codeforces Beta Round #86 (Div. 1 Only)|10|\n|<ul><li>- [ ] Done</li></ul>|208|[Toys](http://codeforces.com/problemset/problem/44/I)|Codeforces||School Team Contest #2 (Winter Computer School 2010/11)|10|\n|<ul><li>- [ ] Done</li></ul>|209|[Bingo!](http://codeforces.com/problemset/problem/457/D)|Codeforces||MemSQL Start[c]UP 2.0 - Round 2|10|\n|<ul><li>- [ ] Done</li></ul>|210|[Drawing Circles is Fun](http://codeforces.com/problemset/problem/372/E)|Codeforces||Codeforces Round #219 (Div. 1)|10|\n|<ul><li>- [ ] Done</li></ul>|211|[Vasily the Bear and Painting Square](http://codeforces.com/problemset/problem/336/E)|Codeforces||Codeforces Round #195 (Div. 2)|10|\n|<ul><li>- [ ] Done</li></ul>|212|[Nephren Runs a Cinema](http://codeforces.com/problemset/problem/896/D)|Codeforces||Codeforces Round #449 (Div. 1)|10|\n|<ul><li>- [ ] Done</li></ul>|213|[Shake It!](http://codeforces.com/problemset/problem/848/D)|Codeforces||Codeforces Round #431 (Div. 1)|10|\n|<ul><li>- [ ] Done</li></ul>|214|[Numbers on the blackboard](http://codeforces.com/problemset/problem/878/E)|Codeforces||Codeforces Round #443 (Div. 1)|10|\n|<ul><li>- [ ] Done</li></ul>|215|[Days of Floral Colours](http://codeforces.com/problemset/problem/848/E)|Codeforces||Codeforces Round #431 (Div. 1)|10|\n"
  },
  {
    "path": "categories/021. Codeforces_Div._1_D/README.md",
    "content": "# 021. Codeforces_Div._1_D\n\n\n| Checkbox | ID | Problem Name|Online Judge|Contest|Difficulty Level|\n|:---:|:---:|:---:|:---:|:---:|:---:|\n|<ul><li>- [ ] Done</li></ul>|1|[Tetrahedron](http://codeforces.com/problemset/problem/166/E)|Codeforces|Codeforces Round #113 (Div. 2)|1|\n|<ul><li>- [ ] Done</li></ul>|2|[Mr. Kitayuta's Colorful Graph](http://codeforces.com/problemset/problem/506/D)|Codeforces|Codeforces Round #286 (Div. 1) & Codeforces Round #286 (Div. 2) & Codeforces Round #286 (Div. 1) & Codeforces Round #286 (Div. 2)|2|\n|<ul><li>- [ ] Done</li></ul>|3|[The Child and Sequence](http://codeforces.com/problemset/problem/438/D)|Codeforces|Codeforces Round #250 (Div. 1)|5|\n|<ul><li>- [ ] Done</li></ul>|4|[Tricky Function](http://codeforces.com/problemset/problem/429/D)|Codeforces|Codeforces Round #245 (Div. 1)|5|\n|<ul><li>- [ ] Done</li></ul>|5|[Antimatter](http://codeforces.com/problemset/problem/383/D)|Codeforces|Codeforces Round #225 (Div. 1)|5|\n|<ul><li>- [ ] Done</li></ul>|6|[Tree and Queries](http://codeforces.com/problemset/problem/375/D)|Codeforces|Codeforces Round #221 (Div. 1)|5|\n|<ul><li>- [ ] Done</li></ul>|7|[Water Tree](http://codeforces.com/problemset/problem/343/D)|Codeforces|Codeforces Round #200 (Div. 1)|5|\n|<ul><li>- [ ] Done</li></ul>|8|[Little Artem and Time Machine](http://codeforces.com/problemset/problem/641/E)|Codeforces|VK Cup 2016 - Round 2|5|\n|<ul><li>- [ ] Done</li></ul>|9|[Clique in the Divisibility Graph](http://codeforces.com/problemset/problem/566/F)|Codeforces|VK Cup 2015 - Finals, online mirror|5|\n|<ul><li>- [ ] Done</li></ul>|10|[Kindergarten](http://codeforces.com/problemset/problem/484/D)|Codeforces|Codeforces Round #276 (Div. 1)|6|\n|<ul><li>- [ ] Done</li></ul>|11|[Serega and Fun](http://codeforces.com/problemset/problem/455/D)|Codeforces|Codeforces Round #260 (Div. 1)|6|\n|<ul><li>- [ ] Done</li></ul>|12|[Jzzhu and Numbers](http://codeforces.com/problemset/problem/449/D)|Codeforces|Codeforces Round #257 (Div. 1)|6|\n|<ul><li>- [ ] Done</li></ul>|13|[Characteristics of Rectangles](http://codeforces.com/problemset/problem/333/D)|Codeforces|Codeforces Round #194 (Div. 1)|6|\n|<ul><li>- [ ] Done</li></ul>|14|[Yaroslav and Divisors](http://codeforces.com/problemset/problem/301/D)|Codeforces|Codeforces Round #182 (Div. 1)|6|\n|<ul><li>- [ ] Done</li></ul>|15|[Towers](http://codeforces.com/problemset/problem/229/D)|Codeforces|Codeforces Round #142 (Div. 1)|6|\n|<ul><li>- [ ] Done</li></ul>|16|[Road Improvement](http://codeforces.com/problemset/problem/543/D)|Codeforces|Codeforces Round #302 (Div. 1)|6|\n|<ul><li>- [ ] Done</li></ul>|17|[High Cry](http://codeforces.com/problemset/problem/875/D)|Codeforces|Codeforces Round #441 (Div. 1, by Moscow Team Olympiad) & Codeforces Round #441 (Div. 2, by Moscow Team Olympiad)|6|\n|<ul><li>- [ ] Done</li></ul>|18|[Zip-line](http://codeforces.com/problemset/problem/650/D)|Codeforces|Codeforces Round #345 (Div. 1)|7|\n|<ul><li>- [ ] Done</li></ul>|19|[Acyclic Organic Compounds](http://codeforces.com/problemset/problem/601/D)|Codeforces|Codeforces Round #333 (Div. 1)|7|\n|<ul><li>- [ ] Done</li></ul>|20|[Top Secret Task](http://codeforces.com/problemset/problem/590/D)|Codeforces|Codeforces Round #327 (Div. 1)|7|\n|<ul><li>- [ ] Done</li></ul>|21|[Mike and Fish](http://codeforces.com/problemset/problem/547/D)|Codeforces|Codeforces Round #305 (Div. 1)|7|\n|<ul><li>- [ ] Done</li></ul>|22|[Fuzzy Search](http://codeforces.com/problemset/problem/528/D)|Codeforces|Codeforces Round #296 (Div. 1)|7|\n|<ul><li>- [ ] Done</li></ul>|23|[Traffic Jams in the Land](http://codeforces.com/problemset/problem/498/D)|Codeforces|Codeforces Round #284 (Div. 1)|7|\n|<ul><li>- [ ] Done</li></ul>|24|[Sereja and Squares](http://codeforces.com/problemset/problem/425/D)|Codeforces|Codeforces Round #243 (Div. 1)|7|\n|<ul><li>- [ ] Done</li></ul>|25|[Hill Climbing](http://codeforces.com/problemset/problem/406/D)|Codeforces|Codeforces Round #238 (Div. 1)|7|\n|<ul><li>- [ ] Done</li></ul>|26|[Beautiful Pairs of Numbers](http://codeforces.com/problemset/problem/403/D)|Codeforces|Codeforces Round #236 (Div. 1)|7|\n|<ul><li>- [ ] Done</li></ul>|27|[Iahub and Xors](http://codeforces.com/problemset/problem/341/D)|Codeforces|Codeforces Round #198 (Div. 1)|7|\n|<ul><li>- [ ] Done</li></ul>|28|[Game with Powers](http://codeforces.com/problemset/problem/317/D)|Codeforces|Codeforces Round #188 (Div. 1)|7|\n|<ul><li>- [ ] Done</li></ul>|29|[Lovely Matrix](http://codeforces.com/problemset/problem/274/D)|Codeforces|Codeforces Round #168 (Div. 1)|7|\n|<ul><li>- [ ] Done</li></ul>|30|[The table](http://codeforces.com/problemset/problem/226/D)|Codeforces|Codeforces Round #140 (Div. 1)|7|\n|<ul><li>- [ ] Done</li></ul>|31|[Couple Cover](http://codeforces.com/problemset/problem/691/F)|Codeforces|Educational Codeforces Round 14|7|\n|<ul><li>- [ ] Done</li></ul>|32|[Package Delivery](http://codeforces.com/problemset/problem/627/C)|Codeforces|8VC Venture Cup 2016 - Final Round|7|\n|<ul><li>- [ ] Done</li></ul>|33|[Lizard Era: Beginning](http://codeforces.com/problemset/problem/585/D)|Codeforces|Codeforces Round #325 (Div. 1) & Codeforces Round #325 (Div. 2)|7|\n|<ul><li>- [ ] Done</li></ul>|34|[Case of a Top Secret](http://codeforces.com/problemset/problem/555/D)|Codeforces|Codeforces Round #310 (Div. 1)|7|\n|<ul><li>- [ ] Done</li></ul>|35|[Anton and School](http://codeforces.com/problemset/problem/734/F)|Codeforces|Codeforces Round #379 (Div. 2)|7|\n|<ul><li>- [ ] Done</li></ul>|36|[Social Network](http://codeforces.com/problemset/problem/524/D)|Codeforces|VK Cup 2015 - Round 1|7|\n|<ul><li>- [ ] Done</li></ul>|37|[Nudist Beach](http://codeforces.com/problemset/problem/553/D)|Codeforces|Codeforces Round #309 (Div. 1)|7|\n|<ul><li>- [ ] Done</li></ul>|38|[Bacterial Melee](http://codeforces.com/problemset/problem/756/D)|Codeforces|8VC Venture Cup 2017 - Final Round|7|\n|<ul><li>- [ ] Done</li></ul>|39|[Axel and Marston in Bitland](http://codeforces.com/problemset/problem/780/F)|Codeforces|?????????? 2017 - ????? (?????? ??? ??????-??????????)|7|\n|<ul><li>- [ ] Done</li></ul>|40|[Power Tree](http://codeforces.com/problemset/problem/607/D)|Codeforces|Codeforces Round #336 (Div. 1)|8|\n|<ul><li>- [ ] Done</li></ul>|41|[Board Game](http://codeforces.com/problemset/problem/605/D)|Codeforces|Codeforces Round #335 (Div. 1)|8|\n|<ul><li>- [ ] Done</li></ul>|42|[REQ](http://codeforces.com/problemset/problem/594/D)|Codeforces|Codeforces Round #330 (Div. 1)|8|\n|<ul><li>- [ ] Done</li></ul>|43|[Shop](http://codeforces.com/problemset/problem/521/D)|Codeforces|Codeforces Round #295 (Div. 1)|8|\n|<ul><li>- [ ] Done</li></ul>|44|[Drazil and Morning Exercise](http://codeforces.com/problemset/problem/516/D)|Codeforces|Codeforces Round #292 (Div. 1)|8|\n|<ul><li>- [ ] Done</li></ul>|45|[Birthday](http://codeforces.com/problemset/problem/494/D)|Codeforces|Codeforces Round #282 (Div. 1)|8|\n|<ul><li>- [ ] Done</li></ul>|46|[Parcels](http://codeforces.com/problemset/problem/480/D)|Codeforces|Codeforces Round #274 (Div. 1)|8|\n|<ul><li>- [ ] Done</li></ul>|47|[World of Darkraft - 2](http://codeforces.com/problemset/problem/464/D)|Codeforces|Codeforces Round #265 (Div. 1)|8|\n|<ul><li>- [ ] Done</li></ul>|48|[DZY Loves Strings](http://codeforces.com/problemset/problem/444/D)|Codeforces|Codeforces Round #254 (Div. 1)|8|\n|<ul><li>- [ ] Done</li></ul>|49|[Adam and Tree](http://codeforces.com/problemset/problem/442/D)|Codeforces|Codeforces Round #253 (Div. 1)|8|\n|<ul><li>- [ ] Done</li></ul>|50|[Mashmokh and Water Tanks](http://codeforces.com/problemset/problem/414/D)|Codeforces|Codeforces Round #240 (Div. 1)|8|\n|<ul><li>- [ ] Done</li></ul>|51|[Instant Messanger](http://codeforces.com/problemset/problem/398/D)|Codeforces|Codeforces Round #233 (Div. 1)|8|\n|<ul><li>- [ ] Done</li></ul>|52|[Developing Game](http://codeforces.com/problemset/problem/377/D)|Codeforces|Codeforces Round #222 (Div. 1)|8|\n|<ul><li>- [ ] Done</li></ul>|53|[Choosing Subtree is Fun](http://codeforces.com/problemset/problem/372/D)|Codeforces|Codeforces Round #219 (Div. 1)|8|\n|<ul><li>- [ ] Done</li></ul>|54|[Sereja and Sets](http://codeforces.com/problemset/problem/367/D)|Codeforces|Codeforces Round #215 (Div. 1)|8|\n|<ul><li>- [ ] Done</li></ul>|55|[Ghd](http://codeforces.com/problemset/problem/364/D)|Codeforces|Codeforces Round #213 (Div. 1)|8|\n|<ul><li>- [ ] Done</li></ul>|56|[Bags and Coins](http://codeforces.com/problemset/problem/356/D)|Codeforces|Codeforces Round #207 (Div. 1)|8|\n|<ul><li>- [ ] Done</li></ul>|57|[Jeff and Removing Periods](http://codeforces.com/problemset/problem/351/D)|Codeforces|Codeforces Round #204 (Div. 1)|8|\n|<ul><li>- [ ] Done</li></ul>|58|[Turtles](http://codeforces.com/problemset/problem/348/D)|Codeforces|Codeforces Round #202 (Div. 1)|8|\n|<ul><li>- [ ] Done</li></ul>|59|[Robot Control](http://codeforces.com/problemset/problem/346/D)|Codeforces|Codeforces Round #201 (Div. 1)|8|\n|<ul><li>- [ ] Done</li></ul>|60|[GCD Table](http://codeforces.com/problemset/problem/338/D)|Codeforces|Codeforces Round #196 (Div. 1)|8|\n|<ul><li>- [ ] Done</li></ul>|61|[Sereja and Straight Lines](http://codeforces.com/problemset/problem/314/D)|Codeforces|Codeforces Round #187 (Div. 1)|8|\n|<ul><li>- [ ] Done</li></ul>|62|[Interval Cubing](http://codeforces.com/problemset/problem/311/D)|Codeforces|Codeforces Round #185 (Div. 1)|8|\n|<ul><li>- [ ] Done</li></ul>|63|[Greg and Caves](http://codeforces.com/problemset/problem/295/D)|Codeforces|Codeforces Round #179 (Div. 1)|8|\n|<ul><li>- [ ] Done</li></ul>|64|[Polo the Penguin and Trees ](http://codeforces.com/problemset/problem/288/D)|Codeforces|Codeforces Round #177 (Div. 1)|8|\n|<ul><li>- [ ] Done</li></ul>|65|[Cows and Cool Sequences](http://codeforces.com/problemset/problem/283/D)|Codeforces|Codeforces Round #174 (Div. 1)|8|\n|<ul><li>- [ ] Done</li></ul>|66|[k-Maximum Subsequence Sum](http://codeforces.com/problemset/problem/280/D)|Codeforces|Codeforces Round #172 (Div. 1)|8|\n|<ul><li>- [ ] Done</li></ul>|67|[Maxim and Increasing Subsequence](http://codeforces.com/problemset/problem/261/D)|Codeforces|Codeforces Round #160 (Div. 1)|8|\n|<ul><li>- [ ] Done</li></ul>|68|[Little Elephant and Broken Sorting](http://codeforces.com/problemset/problem/258/D)|Codeforces|Codeforces Round #157 (Div. 1)|8|\n|<ul><li>- [ ] Done</li></ul>|69|[Clues](http://codeforces.com/problemset/problem/156/D)|Codeforces|Codeforces Round #110 (Div. 1)|8|\n|<ul><li>- [ ] Done</li></ul>|70|[Legen...](http://codeforces.com/problemset/problem/696/D)|Codeforces|Codeforces Round #362 (Div. 1) & Codeforces Round #362 (Div. 2)|8|\n|<ul><li>- [ ] Done</li></ul>|71|[Dividing Kingdom II](http://codeforces.com/problemset/problem/687/D)|Codeforces|Codeforces Round #360 (Div. 1)|8|\n|<ul><li>- [ ] Done</li></ul>|72|[Kay and Eternity](http://codeforces.com/problemset/problem/685/D)|Codeforces|Codeforces Round #359 (Div. 1)|8|\n|<ul><li>- [ ] Done</li></ul>|73|[Roads in Yusland](http://codeforces.com/problemset/problem/671/D)|Codeforces|Codeforces Round #352 (Div. 1)|8|\n|<ul><li>- [ ] Done</li></ul>|74|[Bear and Bowling 4](http://codeforces.com/problemset/problem/660/F)|Codeforces|Educational Codeforces Round 11|8|\n|<ul><li>- [ ] Done</li></ul>|75|[Paper task](http://codeforces.com/problemset/problem/653/F)|Codeforces|IndiaHacks 2016 - Online Edition (Div. 1 + Div. 2)|8|\n|<ul><li>- [ ] Done</li></ul>|76|[Magic Matrix](http://codeforces.com/problemset/problem/632/F)|Codeforces|Educational Codeforces Round 9|8|\n|<ul><li>- [ ] Done</li></ul>|77|[Double Knapsack](http://codeforces.com/problemset/problem/618/F)|Codeforces|Wunder Fund Round 2016 (Div. 1 + Div. 2 combined)|8|\n|<ul><li>- [ ] Done</li></ul>|78|[Kingdom and its Cities](http://codeforces.com/problemset/problem/613/D)|Codeforces|Codeforces Round #339 (Div. 1)|8|\n|<ul><li>- [ ] Done</li></ul>|79|[Frogs and mosquitoes](http://codeforces.com/problemset/problem/609/F)|Codeforces|Educational Codeforces Round 3|8|\n|<ul><li>- [ ] Done</li></ul>|80|[LCS Again](http://codeforces.com/problemset/problem/578/D)|Codeforces|Codeforces Round #320 (Div. 1) [Bayan Thanks-Round] & Codeforces Round #320 (Div. 2) [Bayan Thanks-Round]|8|\n|<ul><li>- [ ] Done</li></ul>|81|[Flights for Regular Customers](http://codeforces.com/problemset/problem/576/D)|Codeforces|Codeforces Round #319 (Div. 1)|8|\n|<ul><li>- [ ] Done</li></ul>|82|[Conveyor Belts](http://codeforces.com/problemset/problem/487/D)|Codeforces|Codeforces Round #278 (Div. 1)|8|\n|<ul><li>- [ ] Done</li></ul>|83|[Cup Trick](http://codeforces.com/problemset/problem/420/D)|Codeforces|Coder-Strike 2014 - Finals (online edition, Div. 1) & Coder-Strike 2014 - Finals (online edition, Div. 2)|8|\n|<ul><li>- [ ] Done</li></ul>|84|[New Year and Cleaning](http://codeforces.com/problemset/problem/611/F)|Codeforces|Good Bye 2015|8|\n|<ul><li>- [ ] Done</li></ul>|85|[Animals and Puzzle](http://codeforces.com/problemset/problem/713/D)|Codeforces|Codeforces Round #371 (Div. 1)|8|\n|<ul><li>- [ ] Done</li></ul>|86|[Arpa’s letter-marked tree and Mehrdad’s Dokhtar-kosh paths](http://codeforces.com/problemset/problem/741/D)|Codeforces|Codeforces Round #383 (Div. 1)|8|\n|<ul><li>- [ ] Done</li></ul>|87|[Best Edge Weight](http://codeforces.com/problemset/problem/827/D)|Codeforces|Codeforces Round #423 (Div. 1, rated, based on VK Cup Finals) & Codeforces Round #423 (Div. 2, rated, based on VK Cup Finals)|8|\n|<ul><li>- [ ] Done</li></ul>|88|[Destiny](http://codeforces.com/problemset/problem/840/D)|Codeforces|Codeforces Round #429 (Div. 1)|8|\n|<ul><li>- [ ] Done</li></ul>|89|[Michael and Charging Stations](http://codeforces.com/problemset/problem/853/D)|Codeforces|Codeforces Round #433 (Div. 1, based on Olympiad of Metropolises)|8|\n|<ul><li>- [ ] Done</li></ul>|90|[Wizard's Tour](http://codeforces.com/problemset/problem/858/F)|Codeforces|?????????? 2018 - ?????????? ????? 1|8|\n|<ul><li>- [ ] Done</li></ul>|91|[Power Tower](http://codeforces.com/problemset/problem/906/D)|Codeforces|Codeforces Round #454 (Div. 1, based on Technocup 2018 Elimination Round 4) & Codeforces Round #454 (Div. 2, based on Technocup 2018 Elimination Round 4)|8|\n|<ul><li>- [ ] Done</li></ul>|92|[Birthday](http://codeforces.com/problemset/problem/623/D)|Codeforces|AIM Tech Round (Div. 1)|9|\n|<ul><li>- [ ] Done</li></ul>|93|[Ruminations on Ruminants](http://codeforces.com/problemset/problem/603/D)|Codeforces|Codeforces Round #334 (Div. 1)|9|\n|<ul><li>- [ ] Done</li></ul>|94|[Tavas in Kansas](http://codeforces.com/problemset/problem/536/D)|Codeforces|Codeforces Round #299 (Div. 1)|9|\n|<ul><li>- [ ] Done</li></ul>|95|[Fox And Travelling](http://codeforces.com/problemset/problem/512/D)|Codeforces|Codeforces Round #290 (Div. 1)|9|\n|<ul><li>- [ ] Done</li></ul>|96|[Misha and XOR](http://codeforces.com/problemset/problem/504/D)|Codeforces|Codeforces Round #285 (Div. 1)|9|\n|<ul><li>- [ ] Done</li></ul>|97|[Random Function and Tree](http://codeforces.com/problemset/problem/482/D)|Codeforces|Codeforces Round #275 (Div. 1)|9|\n|<ul><li>- [ ] Done</li></ul>|98|[Dreamoon and Binary](http://codeforces.com/problemset/problem/477/D)|Codeforces|Codeforces Round #272 (Div. 1)|9|\n|<ul><li>- [ ] Done</li></ul>|99|[Appleman and Complicated Task](http://codeforces.com/problemset/problem/461/D)|Codeforces|Codeforces Round #263 (Div. 1)|9|\n|<ul><li>- [ ] Done</li></ul>|100|[Little Pony and Elements of Harmony](http://codeforces.com/problemset/problem/453/D)|Codeforces|Codeforces Round #259 (Div. 1)|9|\n|<ul><li>- [ ] Done</li></ul>|101|[Nanami's Power Plant](http://codeforces.com/problemset/problem/434/D)|Codeforces|Codeforces Round #248 (Div. 1)|9|\n|<ul><li>- [ ] Done</li></ul>|102|[Largest Submatrix 3](http://codeforces.com/problemset/problem/407/D)|Codeforces|Codeforces Round #239 (Div. 1)|9|\n|<ul><li>- [ ] Done</li></ul>|103|[On Sum of Number of Inversions in Permutations](http://codeforces.com/problemset/problem/396/D)|Codeforces|Codeforces Round #232 (Div. 1)|9|\n|<ul><li>- [ ] Done</li></ul>|104|[Fox and Perfect Sets](http://codeforces.com/problemset/problem/388/D)|Codeforces|Codeforces Round #228 (Div. 1)|9|\n|<ul><li>- [ ] Done</li></ul>|105|[Sereja and Cinema](http://codeforces.com/problemset/problem/380/D)|Codeforces|Codeforces Round #223 (Div. 1)|9|\n|<ul><li>- [ ] Done</li></ul>|106|[Levko and Sets](http://codeforces.com/problemset/problem/360/D)|Codeforces|Codeforces Round #210 (Div. 1)|9|\n|<ul><li>- [ ] Done</li></ul>|107|[Transferring Pyramid](http://codeforces.com/problemset/problem/354/D)|Codeforces|Codeforces Round #206 (Div. 1)|9|\n|<ul><li>- [ ] Done</li></ul>|108|[The Evil Temple and the Moving Rocks](http://codeforces.com/problemset/problem/329/D)|Codeforces|Codeforces Round #192 (Div. 1)|9|\n|<ul><li>- [ ] Done</li></ul>|109|[Ciel and Flipboard](http://codeforces.com/problemset/problem/321/D)|Codeforces|Codeforces Round #190 (Div. 1)|9|\n|<ul><li>- [ ] Done</li></ul>|110|[Have You Ever Heard About the Word?](http://codeforces.com/problemset/problem/319/D)|Codeforces|Codeforces Round #189 (Div. 1)|9|\n|<ul><li>- [ ] Done</li></ul>|111|[Rotatable Number](http://codeforces.com/problemset/problem/303/D)|Codeforces|Codeforces Round #183 (Div. 1)|9|\n|<ul><li>- [ ] Done</li></ul>|112|[Color the Carpet](http://codeforces.com/problemset/problem/297/D)|Codeforces|Codeforces Round #180 (Div. 1)|9|\n|<ul><li>- [ ] Done</li></ul>|113|[Tourists](http://codeforces.com/problemset/problem/286/D)|Codeforces|Codeforces Round #176 (Div. 1)|9|\n|<ul><li>- [ ] Done</li></ul>|114|[Google Code Jam](http://codeforces.com/problemset/problem/277/D)|Codeforces|Codeforces Round #170 (Div. 1)|9|\n|<ul><li>- [ ] Done</li></ul>|115|[Dima and Figure](http://codeforces.com/problemset/problem/273/D)|Codeforces|Codeforces Round #167 (Div. 1)|9|\n|<ul><li>- [ ] Done</li></ul>|116|[Maximum Waterfall](http://codeforces.com/problemset/problem/269/D)|Codeforces|Codeforces Round #165 (Div. 1)|9|\n|<ul><li>- [ ] Done</li></ul>|117|[Colorful Stones](http://codeforces.com/problemset/problem/264/D)|Codeforces|Codeforces Round #162 (Div. 1)|9|\n|<ul><li>- [ ] Done</li></ul>|118|[Liars and Serge](http://codeforces.com/problemset/problem/256/D)|Codeforces|Codeforces Round #156 (Div. 1)|9|\n|<ul><li>- [ ] Done</li></ul>|119|[Two Sets](http://codeforces.com/problemset/problem/251/D)|Codeforces|Codeforces Round #153 (Div. 1)|9|\n|<ul><li>- [ ] Done</li></ul>|120|[Donkey and Stars](http://codeforces.com/problemset/problem/249/D)|Codeforces|Codeforces Round #152 (Div. 1)|9|\n|<ul><li>- [ ] Done</li></ul>|121|[Graph Game](http://codeforces.com/problemset/problem/235/D)|Codeforces|Codeforces Round #146 (Div. 1)|9|\n|<ul><li>- [ ] Done</li></ul>|122|[Fence](http://codeforces.com/problemset/problem/232/D)|Codeforces|Codeforces Round #144 (Div. 1)|9|\n|<ul><li>- [ ] Done</li></ul>|123|[Little Elephant and Triangle](http://codeforces.com/problemset/problem/220/D)|Codeforces|Codeforces Round #136 (Div. 1)|9|\n|<ul><li>- [ ] Done</li></ul>|124|[Bitonix' Patrol](http://codeforces.com/problemset/problem/217/D)|Codeforces|Codeforces Round #134 (Div. 1)|9|\n|<ul><li>- [ ] Done</li></ul>|125|[Stars](http://codeforces.com/problemset/problem/213/D)|Codeforces|Codeforces Round #131 (Div. 1)|9|\n|<ul><li>- [ ] Done</li></ul>|126|[Little Elephant and Retro Strings](http://codeforces.com/problemset/problem/204/D)|Codeforces|Codeforces Round #129 (Div. 1)|9|\n|<ul><li>- [ ] Done</li></ul>|127|[Brand New Problem](http://codeforces.com/problemset/problem/201/D)|Codeforces|Codeforces Round #127 (Div. 1)|9|\n|<ul><li>- [ ] Done</li></ul>|128|[The Next Good String](http://codeforces.com/problemset/problem/196/D)|Codeforces|Codeforces Round #124 (Div. 1)|9|\n|<ul><li>- [ ] Done</li></ul>|129|[Two Segments](http://codeforces.com/problemset/problem/193/D)|Codeforces|Codeforces Round #122 (Div. 1)|9|\n|<ul><li>- [ ] Done</li></ul>|130|[Metro Scheme](http://codeforces.com/problemset/problem/191/D)|Codeforces|Codeforces Round #121 (Div. 1)|9|\n|<ul><li>- [ ] Done</li></ul>|131|[BRT Contract ](http://codeforces.com/problemset/problem/187/D)|Codeforces|Codeforces Round #119 (Div. 1)|9|\n|<ul><li>- [ ] Done</li></ul>|132|[Visit of the Great](http://codeforces.com/problemset/problem/185/D)|Codeforces|Codeforces Round #118 (Div. 1)|9|\n|<ul><li>- [ ] Done</li></ul>|133|[Flatland Fencing](http://codeforces.com/problemset/problem/154/D)|Codeforces|Codeforces Round #109 (Div. 1)|9|\n|<ul><li>- [ ] Done</li></ul>|134|[Mission Impassable](http://codeforces.com/problemset/problem/150/D)|Codeforces|Codeforces Round #107 (Div. 1)|9|\n|<ul><li>- [ ] Done</li></ul>|135|[Lucky Pair](http://codeforces.com/problemset/problem/145/D)|Codeforces|Codeforces Round #104 (Div. 1)|9|\n|<ul><li>- [ ] Done</li></ul>|136|[Help Shrek and Donkey 2](http://codeforces.com/problemset/problem/142/D)|Codeforces|Codeforces Round #102 (Div. 1)|9|\n|<ul><li>- [ ] Done</li></ul>|137|[World of Darkraft](http://codeforces.com/problemset/problem/138/D)|Codeforces|Codeforces Beta Round #99 (Div. 1)|9|\n|<ul><li>- [ ] Done</li></ul>|138|[Incorrect Flow](http://codeforces.com/problemset/problem/708/D)|Codeforces|AIM Tech Round 3 (Div. 1)|9|\n|<ul><li>- [ ] Done</li></ul>|139|[T-Shirts](http://codeforces.com/problemset/problem/702/F)|Codeforces|Educational Codeforces Round 15|9|\n|<ul><li>- [ ] Done</li></ul>|140|[Huffman Coding on Segment](http://codeforces.com/problemset/problem/700/D)|Codeforces|Codeforces Round #364 (Div. 1)|9|\n|<ul><li>- [ ] Done</li></ul>|141|[Limak and Shooting Points](http://codeforces.com/problemset/problem/698/D)|Codeforces|Codeforces Round #363 (Div. 1) & Codeforces Round #363 (Div. 2)|9|\n|<ul><li>- [ ] Done</li></ul>|142|[Lena and Queries](http://codeforces.com/problemset/problem/678/F)|Codeforces|Educational Codeforces Round 13|9|\n|<ul><li>- [ ] Done</li></ul>|143|[Bear and Chase](http://codeforces.com/problemset/problem/679/D)|Codeforces|Codeforces Round #356 (Div. 1)|9|\n|<ul><li>- [ ] Done</li></ul>|144|[Bear and Paradox](http://codeforces.com/problemset/problem/639/E)|Codeforces|VK Cup 2016 - Round 1|9|\n|<ul><li>- [ ] Done</li></ul>|145|[Edge coloring of bipartite graph](http://codeforces.com/problemset/problem/600/F)|Codeforces|Educational Codeforces Round 2|9|\n|<ul><li>- [ ] Done</li></ul>|146|[Bear and Cavalry](http://codeforces.com/problemset/problem/573/D)|Codeforces|Codeforces Round #318 [RussianCodeCup Thanks-Round] (Div. 1)|9|\n|<ul><li>- [ ] Done</li></ul>|147|[Sign Posts](http://codeforces.com/problemset/problem/568/D)|Codeforces|Codeforces Round #315 (Div. 1)|9|\n|<ul><li>- [ ] Done</li></ul>|148|[Randomizer](http://codeforces.com/problemset/problem/559/D)|Codeforces|Codeforces Round #313 (Div. 1)|9|\n|<ul><li>- [ ] Done</li></ul>|149|[Superhero's Job](http://codeforces.com/problemset/problem/542/D)|Codeforces|VK Cup 2015 - Round 3 (unofficial online mirror, Div. 1 only)|9|\n|<ul><li>- [ ] Done</li></ul>|150|[Sereja and Squares](http://codeforces.com/problemset/problem/314/E)|Codeforces|Codeforces Round #187 (Div. 1)|9|\n|<ul><li>- [ ] Done</li></ul>|151|[Big Problems for Organizers](http://codeforces.com/problemset/problem/418/D)|Codeforces|RCC 2014 Warmup (Div. 1)|9|\n|<ul><li>- [ ] Done</li></ul>|152|[Large Refrigerator](http://codeforces.com/problemset/problem/163/D)|Codeforces|VK Cup 2012 Round 2|9|\n|<ul><li>- [ ] Done</li></ul>|153|[Deputies](http://codeforces.com/problemset/problem/173/D)|Codeforces|Croc Champ 2012 - Round 1|9|\n|<ul><li>- [ ] Done</li></ul>|154|[Minimum Diameter](http://codeforces.com/problemset/problem/164/D)|Codeforces|VK Cup 2012 Round 3|9|\n|<ul><li>- [ ] Done</li></ul>|155|[Hyper String](http://codeforces.com/problemset/problem/176/D)|Codeforces|Croc Champ 2012 - Round 2|9|\n|<ul><li>- [ ] Done</li></ul>|156|[T-shirt](http://codeforces.com/problemset/problem/183/D)|Codeforces|Croc Champ 2012 - Final|9|\n|<ul><li>- [ ] Done</li></ul>|157|[Cutting a Fence](http://codeforces.com/problemset/problem/212/D)|Codeforces|VK Cup 2012 Finals (unofficial online-version)|9|\n|<ul><li>- [ ] Done</li></ul>|158|[Ksusha and Square](http://codeforces.com/problemset/problem/293/D)|Codeforces|Croc Champ 2013 - Round 2|9|\n|<ul><li>- [ ] Done</li></ul>|159|[Reclamation](http://codeforces.com/problemset/problem/325/D)|Codeforces|MemSQL start[c]up Round 1|9|\n|<ul><li>- [ ] Done</li></ul>|160|[Rectangles and Square](http://codeforces.com/problemset/problem/335/D)|Codeforces|MemSQL start[c]up Round 2 - online version|9|\n|<ul><li>- [ ] Done</li></ul>|161|[Andrew and Chemistry](http://codeforces.com/problemset/problem/718/D)|Codeforces|Codeforces Round #373 (Div. 1)|9|\n|<ul><li>- [ ] Done</li></ul>|162|[Permutations](http://codeforces.com/problemset/problem/736/D)|Codeforces|Codeforces Round #382 (Div. 1)|9|\n|<ul><li>- [ ] Done</li></ul>|163|[Timofey and a flat tree](http://codeforces.com/problemset/problem/763/D)|Codeforces|Codeforces Round #395 (Div. 1)|9|\n|<ul><li>- [ ] Done</li></ul>|164|[Parquet Re-laying](http://codeforces.com/problemset/problem/778/D)|Codeforces|Codeforces Round #402 (Div. 1)|9|\n|<ul><li>- [ ] Done</li></ul>|165|[Varying Kibibits](http://codeforces.com/problemset/problem/772/D)|Codeforces|VK Cup 2017 - Round 2|9|\n|<ul><li>- [ ] Done</li></ul>|166|[Perishable Roads](http://codeforces.com/problemset/problem/773/D)|Codeforces|VK Cup 2017 - Round 3|9|\n|<ul><li>- [ ] Done</li></ul>|167|[Hitchhiking in the Baltic States](http://codeforces.com/problemset/problem/809/D)|Codeforces|Codeforces Round #415 (Div. 1)|9|\n|<ul><li>- [ ] Done</li></ul>|168|[Karen and Cards](http://codeforces.com/problemset/problem/815/D)|Codeforces|Codeforces Round #419 (Div. 1)|9|\n|<ul><li>- [ ] Done</li></ul>|169|[Singer House](http://codeforces.com/problemset/problem/830/D)|Codeforces|Codeforces Round #424 (Div. 1, rated, based on VK Cup Finals)|9|\n|<ul><li>- [ ] Done</li></ul>|170|[Tournament Construction](http://codeforces.com/problemset/problem/850/D)|Codeforces|Codeforces Round #432 (Div. 1, based on IndiaHacks Final Round 2017)|9|\n|<ul><li>- [ ] Done</li></ul>|171|[Magic Breeding](http://codeforces.com/problemset/problem/878/D)|Codeforces|Codeforces Round #443 (Div. 1)|9|\n|<ul><li>- [ ] Done</li></ul>|172|[Weighting a Tree](http://codeforces.com/problemset/problem/901/D)|Codeforces|Codeforces Round #453 (Div. 1)|9|\n|<ul><li>- [ ] Done</li></ul>|173|[Stranger Trees](http://codeforces.com/problemset/problem/917/D)|Codeforces|Codeforces Round #459 (Div. 1)|9|\n|<ul><li>- [ ] Done</li></ul>|174|[Chain Reaction](http://codeforces.com/problemset/problem/666/D)|Codeforces|Codeforces Round #349 (Div. 1) & Codeforces Round #349 (Div. 2)|10|\n|<ul><li>- [ ] Done</li></ul>|175|[Gears](http://codeforces.com/problemset/problem/497/D)|Codeforces|Codeforces Round #283 (Div. 1)|10|\n|<ul><li>- [ ] Done</li></ul>|176|[Tree](http://codeforces.com/problemset/problem/468/D)|Codeforces|Codeforces Round #268 (Div. 1)|10|\n|<ul><li>- [ ] Done</li></ul>|177|[DZY Loves Games](http://codeforces.com/problemset/problem/446/D)|Codeforces|Codeforces Round #255 (Div. 1)|10|\n|<ul><li>- [ ] Done</li></ul>|178|[Three Arrays](http://codeforces.com/problemset/problem/392/D)|Codeforces|Codeforces Round #230 (Div. 1)|10|\n|<ul><li>- [ ] Done</li></ul>|179|[Cubes](http://codeforces.com/problemset/problem/243/D)|Codeforces|Codeforces Round #150 (Div. 1)|10|\n|<ul><li>- [ ] Done</li></ul>|180|[Tape Programming](http://codeforces.com/problemset/problem/238/D)|Codeforces|Codeforces Round #148 (Div. 1)|10|\n|<ul><li>- [ ] Done</li></ul>|181|[Spider](http://codeforces.com/problemset/problem/223/D)|Codeforces|Codeforces Round #138 (Div. 1)|10|\n|<ul><li>- [ ] Done</li></ul>|182|[Cube Snake](http://codeforces.com/problemset/problem/198/D)|Codeforces|Codeforces Round #125 (Div. 1)|10|\n|<ul><li>- [ ] Done</li></ul>|183|[Wizards and Roads](http://codeforces.com/problemset/problem/167/D)|Codeforces|Codeforces Round #114 (Div. 1)|10|\n|<ul><li>- [ ] Done</li></ul>|184|[Captain America](http://codeforces.com/problemset/problem/704/D)|Codeforces|Codeforces Round #366 (Div. 1)|10|\n|<ul><li>- [ ] Done</li></ul>|185|[Bearish Fanpages](http://codeforces.com/problemset/problem/643/D)|Codeforces|VK Cup 2016 - Round 3|10|\n|<ul><li>- [ ] Done</li></ul>|186|[To Hack or not to Hack](http://codeforces.com/problemset/problem/662/E)|Codeforces|CROC 2016 - Final Round [Private, For Onsite Finalists Only]|10|\n|<ul><li>- [ ] Done</li></ul>|187|[Simba on the Circle](http://codeforces.com/problemset/problem/612/F)|Codeforces|Educational Codeforces Round 4|10|\n|<ul><li>- [ ] Done</li></ul>|188|[Cut Length](http://codeforces.com/problemset/problem/598/F)|Codeforces|Educational Codeforces Round 1|10|\n|<ul><li>- [ ] Done</li></ul>|189|[Duff in Mafia](http://codeforces.com/problemset/problem/587/D)|Codeforces|Codeforces Round #326 (Div. 1) & Codeforces Round #326 (Div. 2)|10|\n|<ul><li>- [ ] Done</li></ul>|190|[Number of Binominal Coefficients](http://codeforces.com/problemset/problem/582/D)|Codeforces|Codeforces Round #323 (Div. 1)|10|\n|<ul><li>- [ ] Done</li></ul>|191|[Campus](http://codeforces.com/problemset/problem/571/D)|Codeforces|Codeforces Round #317 [AimFund Thanks-Round] (Div. 1)|10|\n|<ul><li>- [ ] Done</li></ul>|192|[Landmarks](http://codeforces.com/problemset/problem/533/D)|Codeforces|VK Cup 2015 - Round 2 (unofficial online mirror, Div. 1 only)|10|\n|<ul><li>- [ ] Done</li></ul>|193|[Tennis Rackets](http://codeforces.com/problemset/problem/309/D)|Codeforces|Croc Champ 2013 - Finals (online version, Div. 1)|10|\n|<ul><li>- [ ] Done</li></ul>|194|[Create a Maze](http://codeforces.com/problemset/problem/715/D)|Codeforces|Codeforces Round #372 (Div. 1)|10|\n|<ul><li>- [ ] Done</li></ul>|195|[Bingo!](http://codeforces.com/problemset/problem/457/D)|Codeforces|MemSQL Start[c]UP 2.0 - Round 2|10|\n|<ul><li>- [ ] Done</li></ul>|196|[Recover a functional graph](http://codeforces.com/problemset/problem/739/D)|Codeforces|Codeforces Round #381 (Div. 1)|10|\n|<ul><li>- [ ] Done</li></ul>|197|[Hongcow Draws a Circle](http://codeforces.com/problemset/problem/744/D)|Codeforces|Codeforces Round #385 (Div. 1)|10|\n|<ul><li>- [ ] Done</li></ul>|198|[Bear and Rectangle Strips](http://codeforces.com/problemset/problem/771/E)|Codeforces|VK Cup 2017 - Round 1|10|\n|<ul><li>- [ ] Done</li></ul>|199|[Rap God](http://codeforces.com/problemset/problem/786/D)|Codeforces|Codeforces Round #406 (Div. 1)|10|\n|<ul><li>- [ ] Done</li></ul>|200|[Mister B and Astronomers](http://codeforces.com/problemset/problem/819/D)|Codeforces|Codeforces Round #421 (Div. 1)|10|\n|<ul><li>- [ ] Done</li></ul>|201|[Red-Black Cobweb](http://codeforces.com/problemset/problem/833/D)|Codeforces|Codeforces Round #426 (Div. 1)|10|\n|<ul><li>- [ ] Done</li></ul>|202|[Dynamic Shortest Path](http://codeforces.com/problemset/problem/843/D)|Codeforces|AIM Tech Round 4 (Div. 1)|10|\n|<ul><li>- [ ] Done</li></ul>|203|[Shake It!](http://codeforces.com/problemset/problem/848/D)|Codeforces|Codeforces Round #431 (Div. 1)|10|\n|<ul><li>- [ ] Done</li></ul>|204|[Hex Dyslexia](http://codeforces.com/problemset/problem/865/E)|Codeforces|MemSQL Start[c]UP 3.0 - Round 2 (onsite finalists)|10|\n|<ul><li>- [ ] Done</li></ul>|205|[Symmetric Projections](http://codeforces.com/problemset/problem/886/F)|Codeforces|?????????? 2018 - ?????????? ????? 3|10|\n|<ul><li>- [ ] Done</li></ul>|206|[Sloth](http://codeforces.com/problemset/problem/891/D)|Codeforces|Codeforces Round #446 (Div. 1)|10|\n|<ul><li>- [ ] Done</li></ul>|207|[Nephren Runs a Cinema](http://codeforces.com/problemset/problem/896/D)|Codeforces|Codeforces Round #449 (Div. 1)|10|\n|<ul><li>- [ ] Done</li></ul>|208|[A Creative Cutout](http://codeforces.com/problemset/problem/933/D)|Codeforces|Codeforces Round #462 (Div. 1)|10|\n|<ul><li>- [ ] Done</li></ul>|209|[World of Tank](http://codeforces.com/problemset/problem/936/D)|Codeforces|Codeforces Round #467 (Div. 1)|10|\n"
  },
  {
    "path": "categories/022. trees/README.md",
    "content": "# 022. trees\n\n\n| Checkbox | ID | Problem Name|Online Judge|Year|Contest|Difficulty Level|\n|:---:|:---:|:---:|:---:|:---:|:---:|:---:|\n|<ul><li>- [ ] Done</li></ul>|1|[Longest path in a tree](http://www.spoj.com/problems/PT07Z/)|SPOJ|||1|\n|<ul><li>- [ ] Done</li></ul>|2|[Chocolate](http://www.spoj.com/problems/CHOCOLA/)|SPOJ|||1|\n|<ul><li>- [ ] Done</li></ul>|3|[Kefa and Park](http://codeforces.com/problemset/problem/580/C)|Codeforces||Codeforces Round #321 (Div. 2)|1|\n|<ul><li>- [ ] Done</li></ul>|4|[k-Tree](http://codeforces.com/problemset/problem/431/C)|Codeforces||Codeforces Round #247 (Div. 2)|1|\n|<ul><li>- [ ] Done</li></ul>|5|[Xenia and Bit Operations](http://codeforces.com/problemset/problem/339/D)|Codeforces||Codeforces Round #197 (Div. 2)|1|\n|<ul><li>- [ ] Done</li></ul>|6|[Party](http://codeforces.com/problemset/problem/115/A)|Codeforces||Codeforces Beta Round #87 (Div. 1 Only) & Codeforces Beta Round #87 (Div. 2 Only)|1|\n|<ul><li>- [ ] Done</li></ul>|7|[Nice Binary Trees](http://www.spoj.com/problems/NICEBTRE/)|SPOJ|||1|\n|<ul><li>- [ ] Done</li></ul>|8|[Pashmak and Garden](http://codeforces.com/problemset/problem/459/A)|Codeforces||Codeforces Round #261 (Div. 2)|1|\n|<ul><li>- [ ] Done</li></ul>|9|[Binary Search Tree](https://uva.onlinejudge.org/index.php?option=onlinejudge&page=show_problem&problem=3769)|UVA|||2|\n|<ul><li>- [ ] Done</li></ul>|10|[Bear and Forgotten Tree 3](http://codeforces.com/problemset/problem/639/B)|Codeforces||VK Cup 2016 - Round 1|2|\n|<ul><li>- [ ] Done</li></ul>|11|[Reposts](http://codeforces.com/problemset/problem/522/A)|Codeforces||VK Cup 2015 - Qualification Round 1|2|\n|<ul><li>- [ ] Done</li></ul>|12|[Xor-tree](http://codeforces.com/problemset/problem/429/A)|Codeforces||Codeforces Round #245 (Div. 1) & Codeforces Round #245 (Div. 2)|2|\n|<ul><li>- [ ] Done</li></ul>|13|[Tree _order](http://www.spoj.com/problems/TREEORD/)|SPOJ|||2|\n|<ul><li>- [ ] Done</li></ul>|14|[Timofey and a tree](http://codeforces.com/problemset/problem/763/A)|Codeforces||Codeforces Round #395 (Div. 1) & Codeforces Round #395 (Div. 2)|2|\n|<ul><li>- [ ] Done</li></ul>|15|[Journey](http://codeforces.com/problemset/problem/839/C)|Codeforces||Codeforces Round #428 (Div. 2)|2|\n|<ul><li>- [ ] Done</li></ul>|16|[Fibonacci System](https://icpcarchive.ecs.baylor.edu/index.php?option=onlinejudge&page=show_problem&problem=2377)|Live Archive|2008|Europe - Northeastern|2|\n|<ul><li>- [ ] Done</li></ul>|17|[Choosing Capital for Treeland](http://codeforces.com/problemset/problem/219/D)|Codeforces||Codeforces Round #135 (Div. 2)|3|\n|<ul><li>- [ ] Done</li></ul>|18|[Distance in Tree](http://codeforces.com/problemset/problem/161/D)|Codeforces||VK Cup 2012 Round 1|3|\n|<ul><li>- [ ] Done</li></ul>|19|[Ants Colony](https://uva.onlinejudge.org/index.php?option=onlinejudge&page=show_problem&problem=3390)|UVA|||3|\n|<ul><li>- [ ] Done</li></ul>|20|[Misha and Forest](http://codeforces.com/problemset/problem/501/C)|Codeforces||Codeforces Round #285 (Div. 2) & Codeforces Round #285 (Div. 1)|3|\n|<ul><li>- [ ] Done</li></ul>|21|[Interesting Array](http://codeforces.com/problemset/problem/482/B)|Codeforces||Codeforces Round #275 (Div. 1) & Codeforces Round #275 (Div. 2)|3|\n|<ul><li>- [ ] Done</li></ul>|22|[Valera and Elections](http://codeforces.com/problemset/problem/369/C)|Codeforces||Codeforces Round #216 (Div. 2)|3|\n|<ul><li>- [ ] Done</li></ul>|23|[Alyona and the Tree](http://codeforces.com/problemset/problem/682/C)|Codeforces||Codeforces Round #358 (Div. 2)|3|\n|<ul><li>- [ ] Done</li></ul>|24|[Anton and Making Potions](http://codeforces.com/problemset/problem/734/C)|Codeforces||Codeforces Round #379 (Div. 2)|3|\n|<ul><li>- [ ] Done</li></ul>|25|[Okabe and Boxes](http://codeforces.com/problemset/problem/821/C)|Codeforces||Codeforces Round #420 (Div. 2)|3|\n|<ul><li>- [ ] Done</li></ul>|26|[Vasiliy's Multiset](http://codeforces.com/problemset/problem/706/D)|Codeforces||Codeforces Round #367 (Div. 2)|3|\n|<ul><li>- [ ] Done</li></ul>|27|[AVL Tree](http://www.spoj.com/problems/SDITSAVL/)|SPOJ|||3|\n|<ul><li>- [ ] Done</li></ul>|28|[Fools and Roads](http://codeforces.com/problemset/problem/191/C)|Codeforces||Codeforces Round #121 (Div. 1) & Codeforces Round #121 (Div. 2)|4|\n|<ul><li>- [ ] Done</li></ul>|29|[Eternal Victory](http://codeforces.com/problemset/problem/61/D)|Codeforces||Codeforces Beta Round #57 (Div. 2)|4|\n|<ul><li>- [ ] Done</li></ul>|30|[Roads not only in Berland](http://codeforces.com/problemset/problem/25/D)|Codeforces||Codeforces Beta Round #25 (Div. 2 Only)|4|\n|<ul><li>- [ ] Done</li></ul>|31|[Civilization](http://codeforces.com/problemset/problem/455/C)|Codeforces||Codeforces Round #260 (Div. 1) & Codeforces Round #260 (Div. 2)|4|\n|<ul><li>- [ ] Done</li></ul>|32|[Count Minimum Spanning Trees](http://www.spoj.com/problems/MSTS/)|SPOJ|||4|\n|<ul><li>- [ ] Done</li></ul>|33|[Closest distance](http://www.spoj.com/problems/GANNHAT/)|SPOJ|||4|\n|<ul><li>- [ ] Done</li></ul>|34|[Lomsat gelral](http://codeforces.com/problemset/problem/600/E)|Codeforces||Educational Codeforces Round 2|4|\n|<ul><li>- [ ] Done</li></ul>|35|[Tree Requests](http://codeforces.com/problemset/problem/570/D)|Codeforces||Codeforces Round #316 (Div. 2)|4|\n|<ul><li>- [ ] Done</li></ul>|36|[A and B and Lecture Rooms](http://codeforces.com/problemset/problem/519/E)|Codeforces||Codeforces Round #294 (Div. 2)|4|\n|<ul><li>- [ ] Done</li></ul>|37|[New Year Santa Network](http://codeforces.com/problemset/problem/500/D)|Codeforces||Good Bye 2014|4|\n|<ul><li>- [ ] Done</li></ul>|38|[Design Tutorial: Inverse the Problem](http://codeforces.com/problemset/problem/472/D)|Codeforces||Codeforces Round #270|4|\n|<ul><li>- [ ] Done</li></ul>|39|[Appleman and Tree](http://codeforces.com/problemset/problem/461/B)|Codeforces||Codeforces Round #263 (Div. 1) & Codeforces Round #263 (Div. 2)|4|\n|<ul><li>- [ ] Done</li></ul>|40|[A Lot of Games](http://codeforces.com/problemset/problem/455/B)|Codeforces||Codeforces Round #260 (Div. 1) & Codeforces Round #260 (Div. 2)|4|\n|<ul><li>- [ ] Done</li></ul>|41|[Propagating tree](http://codeforces.com/problemset/problem/383/C)|Codeforces||Codeforces Round #225 (Div. 1) & Codeforces Round #225 (Div. 2)|4|\n|<ul><li>- [ ] Done</li></ul>|42|[Vessels](http://codeforces.com/problemset/problem/371/D)|Codeforces||Codeforces Round #218 (Div. 2)|4|\n|<ul><li>- [ ] Done</li></ul>|43|[Xenia and Tree](http://codeforces.com/problemset/problem/342/E)|Codeforces||Codeforces Round #199 (Div. 2)|4|\n|<ul><li>- [ ] Done</li></ul>|44|[Book of Evil](http://codeforces.com/problemset/problem/337/D)|Codeforces||Codeforces Round #196 (Div. 2) & Codeforces Round #196 (Div. 1)|4|\n|<ul><li>- [ ] Done</li></ul>|45|[Ciel the Commander](http://codeforces.com/problemset/problem/321/C)|Codeforces||Codeforces Round #190 (Div. 1) & Codeforces Round #190 (Div. 2)|4|\n|<ul><li>- [ ] Done</li></ul>|46|[Zero Tree](http://codeforces.com/problemset/problem/274/B)|Codeforces||Codeforces Round #168 (Div. 1) & Codeforces Round #168 (Div. 2)|4|\n|<ul><li>- [ ] Done</li></ul>|47|[Enemy is weak](http://codeforces.com/problemset/problem/61/E)|Codeforces||Codeforces Beta Round #57 (Div. 2)|4|\n|<ul><li>- [ ] Done</li></ul>|48|[Tree Construction](http://codeforces.com/problemset/problem/675/D)|Codeforces||Codeforces Round #353 (Div. 2)|4|\n|<ul><li>- [ ] Done</li></ul>|49|[Connecting Universities](http://codeforces.com/problemset/problem/700/B)|Codeforces||Codeforces Round #364 (Div. 1) & Codeforces Round #364 (Div. 2)|4|\n|<ul><li>- [ ] Done</li></ul>|50|[Alyona and a tree](http://codeforces.com/problemset/problem/739/B)|Codeforces||Codeforces Round #381 (Div. 1) & Codeforces Round #381 (Div. 2)|4|\n|<ul><li>- [ ] Done</li></ul>|51|[Chloe and pleasant prizes](http://codeforces.com/problemset/problem/743/D)|Codeforces||Codeforces Round #384 (Div. 2)|4|\n|<ul><li>- [ ] Done</li></ul>|52|[Ilya And The Tree](http://codeforces.com/problemset/problem/842/C)|Codeforces||Codeforces Round #430 (Div. 2)|4|\n|<ul><li>- [ ] Done</li></ul>|53|[Garland](http://codeforces.com/problemset/problem/767/C)|Codeforces||Codeforces Round #398 (Div. 2)|4|\n|<ul><li>- [ ] Done</li></ul>|54|[Blood Cousins](http://codeforces.com/problemset/problem/208/E)|Codeforces||Codeforces Round #130 (Div. 2)|5|\n|<ul><li>- [ ] Done</li></ul>|55|[Spiders](http://codeforces.com/problemset/problem/120/F)|Codeforces||School Regional Team Contest, Saratov, 2011|5|\n|<ul><li>- [ ] Done</li></ul>|56|[Petr#](http://codeforces.com/problemset/problem/113/B)|Codeforces||Codeforces Beta Round #86 (Div. 1 Only) & Codeforces Beta Round #86 (Div. 2 Only)|5|\n|<ul><li>- [ ] Done</li></ul>|57|[Lucky Tree](http://codeforces.com/problemset/problem/109/C)|Codeforces||Codeforces Beta Round #84 (Div. 1 Only) & Codeforces Beta Round #84 (Div. 2 Only)|5|\n|<ul><li>- [ ] Done</li></ul>|58|[Two Paths](http://codeforces.com/problemset/problem/14/D)|Codeforces||Codeforces Beta Round #14 (Div. 2)|5|\n|<ul><li>- [ ] Done</li></ul>|59|[Exposition](http://codeforces.com/problemset/problem/6/E)|Codeforces||Codeforces Beta Round #6 (Div. 2 Only)|5|\n|<ul><li>- [ ] Done</li></ul>|60|[Running Track](http://codeforces.com/problemset/problem/615/C)|Codeforces||Codeforces Round #338 (Div. 2)|5|\n|<ul><li>- [ ] Done</li></ul>|61|[Minimum spanning tree for each edge](http://codeforces.com/problemset/problem/609/E)|Codeforces||Educational Codeforces Round 3|5|\n|<ul><li>- [ ] Done</li></ul>|62|[Super M](http://codeforces.com/problemset/problem/592/D)|Codeforces||Codeforces Round #328 (Div. 2)|5|\n|<ul><li>- [ ] Done</li></ul>|63|[Duff in the Army](http://codeforces.com/problemset/problem/587/C)|Codeforces||Codeforces Round #326 (Div. 1) & Codeforces Round #326 (Div. 2)|5|\n|<ul><li>- [ ] Done</li></ul>|64|[Valid Sets](http://codeforces.com/problemset/problem/486/D)|Codeforces||Codeforces Round #277 (Div. 2)|5|\n|<ul><li>- [ ] Done</li></ul>|65|[Pillars](http://codeforces.com/problemset/problem/474/E)|Codeforces||Codeforces Round #271 (Div. 2)|5|\n|<ul><li>- [ ] Done</li></ul>|66|[4-point polyline](http://codeforces.com/problemset/problem/452/B)|Codeforces||MemSQL Start[c]UP 2.0 - Round 1|5|\n|<ul><li>- [ ] Done</li></ul>|67|[Dungeons and Candies](http://codeforces.com/problemset/problem/436/C)|Codeforces||Zepto Code Rush 2014|5|\n|<ul><li>- [ ] Done</li></ul>|68|[Tree and Queries](http://codeforces.com/problemset/problem/375/D)|Codeforces||Codeforces Round #221 (Div. 1)|5|\n|<ul><li>- [ ] Done</li></ul>|69|[Water Tree](http://codeforces.com/problemset/problem/343/D)|Codeforces||Codeforces Round #200 (Div. 1)|5|\n|<ul><li>- [ ] Done</li></ul>|70|[Sausage Maximization](http://codeforces.com/problemset/problem/282/E)|Codeforces||Codeforces Round #173 (Div. 2)|5|\n|<ul><li>- [ ] Done</li></ul>|71|[Cutting Figure](http://codeforces.com/problemset/problem/193/A)|Codeforces||Codeforces Round #122 (Div. 1) & Codeforces Round #122 (Div. 2)|5|\n|<ul><li>- [ ] Done</li></ul>|72|[Kay and Snowflake](http://codeforces.com/problemset/problem/685/B)|Codeforces||Codeforces Round #359 (Div. 1) & Codeforces Round #359 (Div. 2)|5|\n|<ul><li>- [ ] Done</li></ul>|73|[Misha, Grisha and Underground](http://codeforces.com/problemset/problem/832/D)|Codeforces||Codeforces Round #425 (Div. 2)|5|\n|<ul><li>- [ ] Done</li></ul>|74|[An overnight dance in discotheque](http://codeforces.com/problemset/problem/814/D)|Codeforces||Codeforces Round #418 (Div. 2)|5|\n|<ul><li>- [ ] Done</li></ul>|75|[Count on a Treap](http://www.codechef.com/problems/COT5)|CodeChef|||5|\n|<ul><li>- [ ] Done</li></ul>|76|[Vasya and a Tree](http://codeforces.com/problemset/problem/1076/E)|Codeforces||Educational Codeforces Round 54 (Rated for Div. 2)|5|\n|<ul><li>- [ ] Done</li></ul>|77|[Ant on the Tree](http://codeforces.com/problemset/problem/29/D)|Codeforces||Codeforces Beta Round #29 (Div. 2, Codeforces format)|6|\n|<ul><li>- [ ] Done</li></ul>|78|[Ants in Leaves](http://codeforces.com/problemset/problem/622/E)|Codeforces||Educational Codeforces Round 7|6|\n|<ul><li>- [ ] Done</li></ul>|79|[Hamiltonian Spanning Tree](http://codeforces.com/problemset/problem/618/D)|Codeforces||Wunder Fund Round 2016 (Div. 1 + Div. 2 combined)|6|\n|<ul><li>- [ ] Done</li></ul>|80|[Invariance of Tree](http://codeforces.com/problemset/problem/576/B)|Codeforces||Codeforces Round #319 (Div. 1) & Codeforces Round #319 (Div. 2)|6|\n|<ul><li>- [ ] Done</li></ul>|81|[Road Improvement](http://codeforces.com/problemset/problem/543/D)|Codeforces||Codeforces Round #302 (Div. 1)|6|\n|<ul><li>- [ ] Done</li></ul>|82|[Infinite Inversions](http://codeforces.com/problemset/problem/540/E)|Codeforces||Codeforces Round #301 (Div. 2)|6|\n|<ul><li>- [ ] Done</li></ul>|83|[Demiurges Play Again](http://codeforces.com/problemset/problem/538/E)|Codeforces||Codeforces Round #300|6|\n|<ul><li>- [ ] Done</li></ul>|84|[Work Group](http://codeforces.com/problemset/problem/533/B)|Codeforces||VK Cup 2015 - Round 2 (unofficial online mirror, Div. 1 only)|6|\n|<ul><li>- [ ] Done</li></ul>|85|[Information Graph](http://codeforces.com/problemset/problem/466/E)|Codeforces||Codeforces Round #266 (Div. 2)|6|\n|<ul><li>- [ ] Done</li></ul>|86|[Caisa and Tree](http://codeforces.com/problemset/problem/463/E)|Codeforces||Codeforces Round #264 (Div. 2)|6|\n|<ul><li>- [ ] Done</li></ul>|87|[On Changing Tree](http://codeforces.com/problemset/problem/396/C)|Codeforces||Codeforces Round #232 (Div. 1) & Codeforces Round #232 (Div. 2)|6|\n|<ul><li>- [ ] Done</li></ul>|88|[New Year Tree](http://codeforces.com/problemset/problem/379/F)|Codeforces||Good Bye 2013|6|\n|<ul><li>- [ ] Done</li></ul>|89|[Apple Tree](http://codeforces.com/problemset/problem/348/B)|Codeforces||Codeforces Round #202 (Div. 1) & Codeforces Round #202 (Div. 2)|6|\n|<ul><li>- [ ] Done</li></ul>|90|[WTF?](http://codeforces.com/problemset/problem/290/C)|Codeforces||April Fools Day Contest 2013|6|\n|<ul><li>- [ ] Done</li></ul>|91|[Game on Tree](http://codeforces.com/problemset/problem/280/C)|Codeforces||Codeforces Round #172 (Div. 1) & Codeforces Round #172 (Div. 2)|6|\n|<ul><li>- [ ] Done</li></ul>|92|[Gifts by the List](http://codeforces.com/problemset/problem/681/D)|Codeforces||Codeforces Round #357 (Div. 2)|6|\n|<ul><li>- [ ] Done</li></ul>|93|[Avoiding a disaster](p?ID=214)|A2 Online Judge|||6|\n|<ul><li>- [ ] Done</li></ul>|94|[Karen and Supermarket](http://codeforces.com/problemset/problem/815/C)|Codeforces||Codeforces Round #419 (Div. 1) & Codeforces Round #419 (Div. 2)|6|\n|<ul><li>- [ ] Done</li></ul>|95|[Mahmoud and a xor trip](http://codeforces.com/problemset/problem/766/E)|Codeforces||Codeforces Round #396 (Div. 2)|6|\n|<ul><li>- [ ] Done</li></ul>|96|[Little Elephant and Tree](http://codeforces.com/problemset/problem/258/E)|Codeforces||Codeforces Round #157 (Div. 1)|7|\n|<ul><li>- [ ] Done</li></ul>|97|[Blood Cousins Return](http://codeforces.com/problemset/problem/246/E)|Codeforces||Codeforces Round #151 (Div. 2)|7|\n|<ul><li>- [ ] Done</li></ul>|98|[World Eater Brothers](http://codeforces.com/problemset/problem/238/C)|Codeforces||Codeforces Round #148 (Div. 1) & Codeforces Round #148 (Div. 2)|7|\n|<ul><li>- [ ] Done</li></ul>|99|[Cactus](http://codeforces.com/problemset/problem/231/E)|Codeforces||Codeforces Round #143 (Div. 2)|7|\n|<ul><li>- [ ] Done</li></ul>|100|[Paint Tree](http://codeforces.com/problemset/problem/196/C)|Codeforces||Codeforces Round #124 (Div. 1) & Codeforces Round #124 (Div. 2)|7|\n|<ul><li>- [ ] Done</li></ul>|101|[Beard Graph](http://codeforces.com/problemset/problem/165/D)|Codeforces||Codeforces Round #112 (Div. 2)|7|\n|<ul><li>- [ ] Done</li></ul>|102|[Beavermuncher-0xFF](http://codeforces.com/problemset/problem/77/C)|Codeforces||Codeforces Beta Round #69 (Div. 1 Only) & Codeforces Beta Round #69 (Div. 2 Only)|7|\n|<ul><li>- [ ] Done</li></ul>|103|[Gift](http://codeforces.com/problemset/problem/76/A)|Codeforces||All-Ukrainian School Olympiad in Informatics|7|\n|<ul><li>- [ ] Done</li></ul>|104|[Pursuit For Artifacts](http://codeforces.com/problemset/problem/652/E)|Codeforces||Educational Codeforces Round 10|7|\n|<ul><li>- [ ] Done</li></ul>|105|[Road Improvement](http://codeforces.com/problemset/problem/638/C)|Codeforces||VK Cup 2016 - Qualification Round 2|7|\n|<ul><li>- [ ] Done</li></ul>|106|[Famil Door and Roads](http://codeforces.com/problemset/problem/629/E)|Codeforces||Codeforces Round #343 (Div. 2)|7|\n|<ul><li>- [ ] Done</li></ul>|107|[Acyclic Organic Compounds](http://codeforces.com/problemset/problem/601/D)|Codeforces||Codeforces Round #333 (Div. 1)|7|\n|<ul><li>- [ ] Done</li></ul>|108|[Happy Tree Party](http://codeforces.com/problemset/problem/593/D)|Codeforces||Codeforces Round #329 (Div. 2)|7|\n|<ul><li>- [ ] Done</li></ul>|109|[Bribes](http://codeforces.com/problemset/problem/575/B)|Codeforces||Bubble Cup 8 - Finals [Online Mirror]|7|\n|<ul><li>- [ ] Done</li></ul>|110|[Bear and Drawing](http://codeforces.com/problemset/problem/573/C)|Codeforces||Codeforces Round #318 [RussianCodeCup Thanks-Round] (Div. 1) & Codeforces Round #318 [RussianCodeCup Thanks-Round] (Div. 2)|7|\n|<ul><li>- [ ] Done</li></ul>|111|[Ann and Half-Palindrome](http://codeforces.com/problemset/problem/557/E)|Codeforces||Codeforces Round #311 (Div. 2)|7|\n|<ul><li>- [ ] Done</li></ul>|112|[Case of Computer Network](http://codeforces.com/problemset/problem/555/E)|Codeforces||Codeforces Round #310 (Div. 1)|7|\n|<ul><li>- [ ] Done</li></ul>|113|[Treeland Tour](http://codeforces.com/problemset/problem/490/F)|Codeforces||Codeforces Round #279 (Div. 2)|7|\n|<ul><li>- [ ] Done</li></ul>|114|[Guess the Tree](http://codeforces.com/problemset/problem/429/C)|Codeforces||Codeforces Round #245 (Div. 1) & Codeforces Round #245 (Div. 2)|7|\n|<ul><li>- [ ] Done</li></ul>|115|[Hill Climbing](http://codeforces.com/problemset/problem/406/D)|Codeforces||Codeforces Round #238 (Div. 1)|7|\n|<ul><li>- [ ] Done</li></ul>|116|[Ksenia and Pawns](http://codeforces.com/problemset/problem/382/D)|Codeforces||Codeforces Round #224 (Div. 2)|7|\n|<ul><li>- [ ] Done</li></ul>|117|[Inna and Sequence ](http://codeforces.com/problemset/problem/374/D)|Codeforces||Codeforces Round #220 (Div. 2)|7|\n|<ul><li>- [ ] Done</li></ul>|118|[Divisor Tree](http://codeforces.com/problemset/problem/337/E)|Codeforces||Codeforces Round #196 (Div. 2) & Codeforces Round #196 (Div. 1)|7|\n|<ul><li>- [ ] Done</li></ul>|119|[Little Girl and Problem on Trees](http://codeforces.com/problemset/problem/276/E)|Codeforces||Codeforces Round #169 (Div. 2)|7|\n|<ul><li>- [ ] Done</li></ul>|120|[Black and White Tree](http://codeforces.com/problemset/problem/260/D)|Codeforces||Codeforces Round #158 (Div. 2)|7|\n|<ul><li>- [ ] Done</li></ul>|121|[Big Maximum Sum](http://codeforces.com/problemset/problem/75/D)|Codeforces||Codeforces Beta Round #67 (Div. 2)|7|\n|<ul><li>- [ ] Done</li></ul>|122|[Old Berland Language](http://codeforces.com/problemset/problem/37/C)|Codeforces||Codeforces Beta Round #37|7|\n|<ul><li>- [ ] Done</li></ul>|123|[Iahub and Xors](http://codeforces.com/problemset/problem/341/D)|Codeforces||Codeforces Round #198 (Div. 1)|7|\n|<ul><li>- [ ] Done</li></ul>|124|[New Roads](http://codeforces.com/problemset/problem/746/G)|Codeforces||Codeforces Round #386 (Div. 2)|7|\n|<ul><li>- [ ] Done</li></ul>|125|[Peterson Polyglot](http://codeforces.com/problemset/problem/778/C)|Codeforces||Codeforces Round #402 (Div. 1) & Codeforces Round #402 (Div. 2)|7|\n|<ul><li>- [ ] Done</li></ul>|126|[Ralph And His Tour in Binary Country](http://codeforces.com/problemset/problem/894/D)|Codeforces||Codeforces Round #447 (Div. 2)|7|\n|<ul><li>- [ ] Done</li></ul>|127|[Tree](p?ID=262)|A2 Online Judge|||7|\n|<ul><li>- [ ] Done</li></ul>|128|[IT Restaurants](http://codeforces.com/problemset/problem/212/E)|Codeforces||VK Cup 2012 Finals (unofficial online-version)|8|\n|<ul><li>- [ ] Done</li></ul>|129|[Archaeology](http://codeforces.com/problemset/problem/176/E)|Codeforces||Croc Champ 2012 - Round 2|8|\n|<ul><li>- [ ] Done</li></ul>|130|[e-Government](http://codeforces.com/problemset/problem/163/E)|Codeforces||VK Cup 2012 Round 2|8|\n|<ul><li>- [ ] Done</li></ul>|131|[Castle](http://codeforces.com/problemset/problem/101/D)|Codeforces||Codeforces Beta Round #79 (Div. 1 Only)|8|\n|<ul><li>- [ ] Done</li></ul>|132|[Beautiful Road](http://codeforces.com/problemset/problem/87/D)|Codeforces||Codeforces Beta Round #73 (Div. 1 Only)|8|\n|<ul><li>- [ ] Done</li></ul>|133|[Genetic engineering](http://codeforces.com/problemset/problem/86/C)|Codeforces||Yandex.Algorithm 2011 Round 2|8|\n|<ul><li>- [ ] Done</li></ul>|134|[Petya and Tree](http://codeforces.com/problemset/problem/85/C)|Codeforces||Yandex.Algorithm 2011 Round 1|8|\n|<ul><li>- [ ] Done</li></ul>|135|[Scheme](http://codeforces.com/problemset/problem/22/E)|Codeforces||Codeforces Beta Round #22 (Div. 2 Only)|8|\n|<ul><li>- [ ] Done</li></ul>|136|[The Chocolate Spree](http://codeforces.com/problemset/problem/633/F)|Codeforces||Manthan, Codefest 16|8|\n|<ul><li>- [ ] Done</li></ul>|137|[Magic Matrix](http://codeforces.com/problemset/problem/632/F)|Codeforces||Educational Codeforces Round 9|8|\n|<ul><li>- [ ] Done</li></ul>|138|[Preorder Test](http://codeforces.com/problemset/problem/627/D)|Codeforces||8VC Venture Cup 2016 - Final Round|8|\n|<ul><li>- [ ] Done</li></ul>|139|[Kingdom and its Cities](http://codeforces.com/problemset/problem/613/D)|Codeforces||Codeforces Round #339 (Div. 1)|8|\n|<ul><li>- [ ] Done</li></ul>|140|[Zublicanes and Mumocrates](http://codeforces.com/problemset/problem/581/F)|Codeforces||Codeforces Round #322 (Div. 2)|8|\n|<ul><li>- [ ] Done</li></ul>|141|[Matching Names](http://codeforces.com/problemset/problem/566/A)|Codeforces||VK Cup 2015 - Finals, online mirror|8|\n|<ul><li>- [ ] Done</li></ul>|142|[Drazil and Morning Exercise](http://codeforces.com/problemset/problem/516/D)|Codeforces||Codeforces Round #292 (Div. 1)|8|\n|<ul><li>- [ ] Done</li></ul>|143|[Birthday](http://codeforces.com/problemset/problem/494/D)|Codeforces||Codeforces Round #282 (Div. 1)|8|\n|<ul><li>- [ ] Done</li></ul>|144|[Tourists](http://codeforces.com/problemset/problem/487/E)|Codeforces||Codeforces Round #278 (Div. 1)|8|\n|<ul><li>- [ ] Done</li></ul>|145|[DZY Loves Planting](http://codeforces.com/problemset/problem/444/E)|Codeforces||Codeforces Round #254 (Div. 1)|8|\n|<ul><li>- [ ] Done</li></ul>|146|[Adam and Tree](http://codeforces.com/problemset/problem/442/D)|Codeforces||Codeforces Round #253 (Div. 1)|8|\n|<ul><li>- [ ] Done</li></ul>|147|[Choosing Subtree is Fun](http://codeforces.com/problemset/problem/372/D)|Codeforces||Codeforces Round #219 (Div. 1)|8|\n|<ul><li>- [ ] Done</li></ul>|148|[Balance](http://codeforces.com/problemset/problem/317/C)|Codeforces||Codeforces Round #188 (Div. 1) & Codeforces Round #188 (Div. 2)|8|\n|<ul><li>- [ ] Done</li></ul>|149|[Shaass the Great](http://codeforces.com/problemset/problem/294/E)|Codeforces||Codeforces Round #178 (Div. 2)|8|\n|<ul><li>- [ ] Done</li></ul>|150|[Close Vertices](http://codeforces.com/problemset/problem/293/E)|Codeforces||Croc Champ 2013 - Round 2|8|\n|<ul><li>- [ ] Done</li></ul>|151|[Polo the Penguin and Trees ](http://codeforces.com/problemset/problem/288/D)|Codeforces||Codeforces Round #177 (Div. 1)|8|\n|<ul><li>- [ ] Done</li></ul>|152|[Thwarting Demonstrations](http://codeforces.com/problemset/problem/191/E)|Codeforces||Codeforces Round #121 (Div. 1)|8|\n|<ul><li>- [ ] Done</li></ul>|153|[Arpa’s letter-marked tree and Mehrdad’s Dokhtar-kosh paths](http://codeforces.com/problemset/problem/741/D)|Codeforces||Codeforces Round #383 (Div. 1)|8|\n|<ul><li>- [ ] Done</li></ul>|154|[Noble Knight's Path](http://codeforces.com/problemset/problem/226/E)|Codeforces||Codeforces Round #140 (Div. 1)|9|\n|<ul><li>- [ ] Done</li></ul>|155|[Alien DNA](http://codeforces.com/problemset/problem/217/E)|Codeforces||Codeforces Round #134 (Div. 1)|9|\n|<ul><li>- [ ] Done</li></ul>|156|[Garden](http://codeforces.com/problemset/problem/152/E)|Codeforces||Codeforces Round #108 (Div. 2)|9|\n|<ul><li>- [ ] Done</li></ul>|157|[Freezing with Style](http://codeforces.com/problemset/problem/150/E)|Codeforces||Codeforces Round #107 (Div. 1)|9|\n|<ul><li>- [ ] Done</li></ul>|158|[Pairs](http://codeforces.com/problemset/problem/81/E)|Codeforces||Yandex.Algorithm Open 2011 Qualification 1|9|\n|<ul><li>- [ ] Done</li></ul>|159|[Information Reform](http://codeforces.com/problemset/problem/70/E)|Codeforces||Codeforces Beta Round #64|9|\n|<ul><li>- [ ] Done</li></ul>|160|[Caterpillar](http://codeforces.com/problemset/problem/51/F)|Codeforces||Codeforces Beta Round #48|9|\n|<ul><li>- [ ] Done</li></ul>|161|[Clockwork Bomb](http://codeforces.com/problemset/problem/650/E)|Codeforces||Codeforces Round #345 (Div. 1)|9|\n|<ul><li>- [ ] Done</li></ul>|162|[Pastoral Oddities](http://codeforces.com/problemset/problem/603/E)|Codeforces||Codeforces Round #334 (Div. 1)|9|\n|<ul><li>- [ ] Done</li></ul>|163|[Tavas on the Path](http://codeforces.com/problemset/problem/536/E)|Codeforces||Codeforces Round #299 (Div. 1)|9|\n|<ul><li>- [ ] Done</li></ul>|164|[Fox And Travelling](http://codeforces.com/problemset/problem/512/D)|Codeforces||Codeforces Round #290 (Div. 1)|9|\n|<ul><li>- [ ] Done</li></ul>|165|[Random Function and Tree](http://codeforces.com/problemset/problem/482/D)|Codeforces||Codeforces Round #275 (Div. 1)|9|\n|<ul><li>- [ ] Done</li></ul>|166|[Berland Federalization](http://codeforces.com/problemset/problem/440/D)|Codeforces||Testing Round #10|9|\n|<ul><li>- [ ] Done</li></ul>|167|[Big Problems for Organizers](http://codeforces.com/problemset/problem/418/D)|Codeforces||RCC 2014 Warmup (Div. 1)|9|\n|<ul><li>- [ ] Done</li></ul>|168|[Pilgrims](http://codeforces.com/problemset/problem/348/E)|Codeforces||Codeforces Round #202 (Div. 1)|9|\n|<ul><li>- [ ] Done</li></ul>|169|[Maze](http://codeforces.com/problemset/problem/123/E)|Codeforces||Codeforces Beta Round #92 (Div. 1 Only)|9|\n|<ul><li>- [ ] Done</li></ul>|170|[Singer House](http://codeforces.com/problemset/problem/830/D)|Codeforces||Codeforces Round #424 (Div. 1, rated, based on VK Cup Finals)|9|\n|<ul><li>- [ ] Done</li></ul>|171|[Arkady and a Nobody-men](http://codeforces.com/problemset/problem/860/E)|Codeforces||Codeforces Round #434 (Div. 1, based on Technocup 2018 Elimination Round 1)|9|\n|<ul><li>- [ ] Done</li></ul>|172|[Timofey and a flat tree](http://codeforces.com/problemset/problem/763/D)|Codeforces||Codeforces Round #395 (Div. 1)|9|\n|<ul><li>- [ ] Done</li></ul>|173|[Surprise me!](http://codeforces.com/problemset/problem/809/E)|Codeforces||Codeforces Round #415 (Div. 1)|9|\n|<ul><li>- [ ] Done</li></ul>|174|[Tree and Table](http://codeforces.com/problemset/problem/251/E)|Codeforces||Codeforces Round #153 (Div. 1)|10|\n|<ul><li>- [ ] Done</li></ul>|175|[Tree or not Tree](http://codeforces.com/problemset/problem/117/E)|Codeforces||Codeforces Beta Round #88|10|\n|<ul><li>- [ ] Done</li></ul>|176|[Help King](http://codeforces.com/problemset/problem/98/B)|Codeforces||Codeforces Beta Round #78 (Div. 1 Only) & Codeforces Beta Round #78 (Div. 2 Only)|10|\n|<ul><li>- [ ] Done</li></ul>|177|[Leaders](http://codeforces.com/problemset/problem/97/E)|Codeforces||Yandex.Algorithm 2011 Finals|10|\n|<ul><li>- [ ] Done</li></ul>|178|[Galaxy Union](http://codeforces.com/problemset/problem/48/G)|Codeforces||School Personal Contest #3 (Winter Computer School 2010/11) - Codeforces Beta Round #45 (ACM-ICPC Rules)|10|\n|<ul><li>- [ ] Done</li></ul>|179|[Bear and Chemistry](http://codeforces.com/problemset/problem/639/F)|Codeforces||VK Cup 2016 - Round 1|10|\n|<ul><li>- [ ] Done</li></ul>|180|[Island Puzzle](http://codeforces.com/problemset/problem/627/F)|Codeforces||8VC Venture Cup 2016 - Final Round|10|\n|<ul><li>- [ ] Done</li></ul>|181|[Mirror Box](http://codeforces.com/problemset/problem/578/F)|Codeforces||Codeforces Round #320 (Div. 1) [Bayan Thanks-Round]|10|\n|<ul><li>- [ ] Done</li></ul>|182|[Campus](http://codeforces.com/problemset/problem/571/D)|Codeforces||Codeforces Round #317 [AimFund Thanks-Round] (Div. 1)|10|\n|<ul><li>- [ ] Done</li></ul>|183|[Restoring Map](http://codeforces.com/problemset/problem/566/E)|Codeforces||VK Cup 2015 - Finals, online mirror|10|\n|<ul><li>- [ ] Done</li></ul>|184|[Logistical Questions](http://codeforces.com/problemset/problem/566/C)|Codeforces||VK Cup 2015 - Finals, online mirror|10|\n|<ul><li>- [ ] Done</li></ul>|185|[Berland Miners](http://codeforces.com/problemset/problem/533/A)|Codeforces||VK Cup 2015 - Round 2 (unofficial online mirror, Div. 1 only)|10|\n|<ul><li>- [ ] Done</li></ul>|186|[Spiders Evil Plan](http://codeforces.com/problemset/problem/526/G)|Codeforces||ZeptoLab Code Rush 2015|10|\n|<ul><li>- [ ] Done</li></ul>|187|[Misha and LCP on Tree](http://codeforces.com/problemset/problem/504/E)|Codeforces||Codeforces Round #285 (Div. 1)|10|\n|<ul><li>- [ ] Done</li></ul>|188|[New Year Running](http://codeforces.com/problemset/problem/500/G)|Codeforces||Good Bye 2014|10|\n|<ul><li>- [ ] Done</li></ul>|189|[ELCA](http://codeforces.com/problemset/problem/482/E)|Codeforces||Codeforces Round #275 (Div. 1)|10|\n|<ul><li>- [ ] Done</li></ul>|190|[An easy problem about trees](http://codeforces.com/problemset/problem/457/F)|Codeforces||MemSQL Start[c]UP 2.0 - Round 2|10|\n|<ul><li>- [ ] Done</li></ul>|191|[Furukawa Nagisa's Tree](http://codeforces.com/problemset/problem/434/E)|Codeforces||Codeforces Round #248 (Div. 1)|10|\n|<ul><li>- [ ] Done</li></ul>|192|[Escaping on Beaveractor](http://codeforces.com/problemset/problem/331/D3)|Codeforces||ABBYY Cup 3.0 - Finals (online version)|10|\n|<ul><li>- [ ] Done</li></ul>|193|[Red-Black Cobweb](http://codeforces.com/problemset/problem/833/D)|Codeforces||Codeforces Round #426 (Div. 1)|10|\n|<ul><li>- [ ] Done</li></ul>|194|[ALT](http://codeforces.com/problemset/problem/786/E)|Codeforces||Codeforces Round #406 (Div. 1)|10|\n|<ul><li>- [ ] Done</li></ul>|195|[Sloth](http://codeforces.com/problemset/problem/891/D)|Codeforces||Codeforces Round #446 (Div. 1)|10|\n|<ul><li>- [ ] Done</li></ul>|196|[In a Trap](http://codeforces.com/problemset/problem/840/E)|Codeforces||Codeforces Round #429 (Div. 1)|10|\n|<ul><li>- [ ] Done</li></ul>|197|[Restore the Tree](http://codeforces.com/problemset/problem/871/E)|Codeforces||Codeforces Round #440 (Div. 1, based on Technocup 2018 Elimination Round 2)|10|\n|<ul><li>- [ ] Done</li></ul>|198|[Perpetual Motion Machine](http://codeforces.com/problemset/problem/830/E)|Codeforces||Codeforces Round #424 (Div. 1, rated, based on VK Cup Finals)|10|\n|<ul><li>- [ ] Done</li></ul>|199|[Rap God](http://codeforces.com/problemset/problem/786/D)|Codeforces||Codeforces Round #406 (Div. 1)|10|\n|<ul><li>- [ ] Done</li></ul>|200|[Iron Man](http://codeforces.com/problemset/problem/704/E)|Codeforces||Codeforces Round #366 (Div. 1)|10|\n|<ul><li>- [ ] Done</li></ul>|201|[Nikita and game](http://codeforces.com/problemset/problem/842/E)|Codeforces||Codeforces Round #430 (Div. 2)|10|\n|<ul><li>- [ ] Done</li></ul>|202|[Tree and XOR](http://codeforces.com/problemset/problem/1055/F)|Codeforces||Mail.Ru Cup 2018 Round 2|10|\n"
  },
  {
    "path": "categories/023. Segment_Tree/README.md",
    "content": "# 023. Segment_Tree\n\n\n| Checkbox | ID | Problem Name|Online Judge|Year|Contest|Difficulty Level|\n|:---:|:---:|:---:|:---:|:---:|:---:|:---:|\n|<ul><li>- [ ] Done</li></ul>|1|[Brackets](http://www.spoj.com/problems/BRCKTS/)|SPOJ|||1|\n|<ul><li>- [ ] Done</li></ul>|2|[The Great Ball](http://www.spoj.com/problems/BYTESE2/)|SPOJ|||1|\n|<ul><li>- [ ] Done</li></ul>|3|[Can you answer these queries I](http://www.spoj.com/problems/GSS1/)|SPOJ|||1|\n|<ul><li>- [ ] Done</li></ul>|4|[Can you answer these queries III](http://www.spoj.com/problems/GSS3/)|SPOJ|||1|\n|<ul><li>- [ ] Done</li></ul>|5|[Can you answer these queries V](http://www.spoj.com/problems/GSS5/)|SPOJ|||1|\n|<ul><li>- [ ] Done</li></ul>|6|[Maximum Sum](http://www.spoj.com/problems/KGSS/)|SPOJ|||1|\n|<ul><li>- [ ] Done</li></ul>|7|[Election Posters](http://www.spoj.com/problems/POSTERS/)|SPOJ|||1|\n|<ul><li>- [ ] Done</li></ul>|8|[The day of the competitors](http://www.spoj.com/problems/NICEDAY/)|SPOJ|||1|\n|<ul><li>- [ ] Done</li></ul>|9|[K-th Number](http://www.spoj.com/problems/MKTHNUM/)|SPOJ|||1|\n|<ul><li>- [ ] Done</li></ul>|10|[Yodaness Level](http://www.spoj.com/problems/YODANESS/)|SPOJ|||1|\n|<ul><li>- [ ] Done</li></ul>|11|[AND Rounds](http://www.spoj.com/problems/ANDROUND/)|SPOJ|||1|\n|<ul><li>- [ ] Done</li></ul>|12|[Multiples of 3](http://www.spoj.com/problems/MULTQ3/)|SPOJ|||1|\n|<ul><li>- [ ] Done</li></ul>|13|[Light Switching](http://www.spoj.com/problems/LITE/)|SPOJ|||1|\n|<ul><li>- [ ] Done</li></ul>|14|[D-query](http://www.spoj.com/problems/DQUERY/)|SPOJ|||1|\n|<ul><li>- [ ] Done</li></ul>|15|[Frequent values](http://www.spoj.com/problems/FREQUENT/)|SPOJ|||1|\n|<ul><li>- [ ] Done</li></ul>|16|[Can you answer these queries II](http://www.spoj.com/problems/GSS2/)|SPOJ|||1|\n|<ul><li>- [ ] Done</li></ul>|17|[Sum of Squares with Segment Tree](http://www.spoj.com/problems/SEGSQRSS/)|SPOJ|||1|\n|<ul><li>- [ ] Done</li></ul>|18|[Horrible Queries](http://www.spoj.com/problems/HORRIBLE/)|SPOJ|||1|\n|<ul><li>- [ ] Done</li></ul>|19|[K-query](http://www.spoj.com/problems/KQUERY/)|SPOJ|||1|\n|<ul><li>- [ ] Done</li></ul>|20|[Largest Rectangle in a Histogram](http://www.spoj.com/problems/HISTOGRA/)|SPOJ|||1|\n|<ul><li>- [ ] Done</li></ul>|21|[Xenia and Bit Operations](http://codeforces.com/problemset/problem/339/D)|Codeforces||Codeforces Round #197 (Div. 2)|1|\n|<ul><li>- [ ] Done</li></ul>|22|[Ordering the Soldiers](http://www.spoj.com/problems/ORDERS/)|SPOJ|||1|\n|<ul><li>- [ ] Done</li></ul>|23|[Frequent values](https://uva.onlinejudge.org/index.php?option=onlinejudge&page=show_problem&problem=2176)|UVA|||1|\n|<ul><li>- [ ] Done</li></ul>|24|[Roti Prata](http://www.spoj.com/problems/PRATA/)|SPOJ|||1|\n|<ul><li>- [ ] Done</li></ul>|25|[Negative Score](http://www.spoj.com/problems/RPLN/)|SPOJ|||1|\n|<ul><li>- [ ] Done</li></ul>|26|[Can you answer these queries IV](http://www.spoj.com/problems/GSS4/)|SPOJ|||1|\n|<ul><li>- [ ] Done</li></ul>|27|[Query on a tree again!](http://www.spoj.com/problems/QTREE3/)|SPOJ|||1|\n|<ul><li>- [ ] Done</li></ul>|28|[Order statistic set](http://www.spoj.com/problems/ORDERSET/)|SPOJ|||1|\n|<ul><li>- [ ] Done</li></ul>|29|[Interval Product](https://icpcarchive.ecs.baylor.edu/index.php?option=onlinejudge&page=show_problem&problem=4150)|Live Archive|2012|Latin America|1|\n|<ul><li>- [ ] Done</li></ul>|30|[Coin Flip](http://www.codechef.com/problems/CONFLIP)|CodeChef|||1|\n|<ul><li>- [ ] Done</li></ul>|31|[Find String Roots](http://www.spoj.com/problems/FINDSR/)|SPOJ|||1|\n|<ul><li>- [ ] Done</li></ul>|32|[Count on a tree](http://www.spoj.com/problems/COT/)|SPOJ|||1|\n|<ul><li>- [ ] Done</li></ul>|33|[Flipping Coins](http://www.codechef.com/problems/FLIPCOIN)|CodeChef|||1|\n|<ul><li>- [ ] Done</li></ul>|34|[Inversion Count](http://www.spoj.com/problems/INVCNT/)|SPOJ|||1|\n|<ul><li>- [ ] Done</li></ul>|35|[Help R2-D2!](http://www.spoj.com/problems/HELPR2D2/)|SPOJ|||2|\n|<ul><li>- [ ] Done</li></ul>|36|[Race Against Time](http://www.spoj.com/problems/RACETIME/)|SPOJ|||2|\n|<ul><li>- [ ] Done</li></ul>|37|[Can you answer these queries VI](http://www.spoj.com/problems/GSS6/)|SPOJ|||2|\n|<ul><li>- [ ] Done</li></ul>|38|[Mummy Madness](https://icpcarchive.ecs.baylor.edu/index.php?option=onlinejudge&page=show_problem&problem=3137)|Live Archive|2011|World Finals - Orlando|2|\n|<ul><li>- [ ] Done</li></ul>|39|[Counting Primes ](http://www.spoj.com/problems/CNTPRIME/)|SPOJ|||2|\n|<ul><li>- [ ] Done</li></ul>|40|[Snow White and the N dwarfs](http://www.spoj.com/problems/PATULJCI/)|SPOJ|||2|\n|<ul><li>- [ ] Done</li></ul>|41|[Greg and Array](http://codeforces.com/problemset/problem/295/A)|Codeforces||Codeforces Round #179 (Div. 1) & Codeforces Round #179 (Div. 2)|2|\n|<ul><li>- [ ] Done</li></ul>|42|[Ahoy, Pirates!](https://uva.onlinejudge.org/index.php?option=onlinejudge&page=show_problem&problem=2397)|UVA|||2|\n|<ul><li>- [ ] Done</li></ul>|43|[Interval Product](https://uva.onlinejudge.org/index.php?option=onlinejudge&page=show_problem&problem=3977)|UVA|||2|\n|<ul><li>- [ ] Done</li></ul>|44|[Living with Courage](http://www.spoj.com/problems/COURAGE/)|SPOJ|||2|\n|<ul><li>- [ ] Done</li></ul>|45|[Frequent values](http://acm.tju.edu.cn/toj/showp2913.html)|TJU|||2|\n|<ul><li>- [ ] Done</li></ul>|46|[Light Switching](http://acm.tju.edu.cn/toj/showp3148.html)|TJU|||2|\n|<ul><li>- [ ] Done</li></ul>|47|[Potentiometers](https://uva.onlinejudge.org/index.php?option=onlinejudge&page=show_problem&problem=3238)|UVA|||2|\n|<ul><li>- [ ] Done</li></ul>|48|[WIND VANE](http://www.spoj.com/problems/WINDVANE/)|SPOJ|||2|\n|<ul><li>- [ ] Done</li></ul>|49|[Handball](https://uva.onlinejudge.org/index.php?option=onlinejudge&page=show_problem&problem=4663)|UVA|||2|\n|<ul><li>- [ ] Done</li></ul>|50|[Query on a tree IV](http://www.spoj.com/problems/QTREE4/)|SPOJ|||2|\n|<ul><li>- [ ] Done</li></ul>|51|[Query on a tree V](http://www.spoj.com/problems/QTREE5/)|SPOJ|||2|\n|<ul><li>- [ ] Done</li></ul>|52|[Brackets II](http://www.spoj.com/problems/BRCKTS2/)|SPOJ|||2|\n|<ul><li>- [ ] Done</li></ul>|53|[Can you answer these queries VII](http://www.spoj.com/problems/GSS7/)|SPOJ|||2|\n|<ul><li>- [ ] Done</li></ul>|54|[Chef and medium problem 2](http://www.codechef.com/problems/CHEFD)|CodeChef|||2|\n|<ul><li>- [ ] Done</li></ul>|55|[Binary Search Heap Construction](http://www.spoj.com/problems/HEAPULM/)|SPOJ|||3|\n|<ul><li>- [ ] Done</li></ul>|56|[Congruence Equation](http://www.spoj.com/problems/DPEQN/)|SPOJ|||3|\n|<ul><li>- [ ] Done</li></ul>|57|[Temple Queues](http://www.spoj.com/problems/TEMPLEQ/)|SPOJ|||3|\n|<ul><li>- [ ] Done</li></ul>|58|[GM plants](http://www.spoj.com/problems/IOPC1207/)|SPOJ|||3|\n|<ul><li>- [ ] Done</li></ul>|59|[Blue Mary Needs Help Again](http://www.spoj.com/problems/CASHIER/)|SPOJ|||3|\n|<ul><li>- [ ] Done</li></ul>|60|[Sum of Distinct Numbers](http://www.spoj.com/problems/XXXXXXXX/)|SPOJ|||3|\n|<ul><li>- [ ] Done</li></ul>|61|[GCD 2010](http://acm.timus.ru/problem.aspx?space=1&num=1846)|Timus|||3|\n|<ul><li>- [ ] Done</li></ul>|62|[Dima and Staircase](http://codeforces.com/problemset/problem/272/C)|Codeforces||Codeforces Round #167 (Div. 2) & Codeforces Round #167 (Div. 1)|3|\n|<ul><li>- [ ] Done</li></ul>|63|[Salary Management](http://www.spoj.com/problems/SALMAN/)|SPOJ|||3|\n|<ul><li>- [ ] Done</li></ul>|64|[Sereja and Brackets](http://codeforces.com/problemset/problem/380/C)|Codeforces||Codeforces Round #223 (Div. 1) & Codeforces Round #223 (Div. 2)|3|\n|<ul><li>- [ ] Done</li></ul>|65|[Query on a tree VI](http://www.spoj.com/problems/QTREE6/)|SPOJ|||3|\n|<ul><li>- [ ] Done</li></ul>|66|[Interesting Array](http://codeforces.com/problemset/problem/482/B)|Codeforces||Codeforces Round #275 (Div. 1) & Codeforces Round #275 (Div. 2)|3|\n|<ul><li>- [ ] Done</li></ul>|67|[Maximum number, GCD condition](http://www.codechef.com/problems/ANUGCD)|CodeChef|||3|\n|<ul><li>- [ ] Done</li></ul>|68|[Xor Queries](http://www.codechef.com/problems/XRQRS)|CodeChef|||3|\n|<ul><li>- [ ] Done</li></ul>|69|[K-query II](http://www.spoj.com/problems/KQUERY2/)|SPOJ|||3|\n|<ul><li>- [ ] Done</li></ul>|70|[Little Elephant and Array](http://codeforces.com/problemset/problem/220/B)|Codeforces||Codeforces Round #136 (Div. 1) & Codeforces Round #136 (Div. 2)|3|\n|<ul><li>- [ ] Done</li></ul>|71|[Multiply Game](http://acm.tju.edu.cn/toj/showp3440.html)|TJU|||3|\n|<ul><li>- [ ] Done</li></ul>|72|[ForbiddenSum](http://www.codechef.com/problems/FRBSUM)|CodeChef|||3|\n|<ul><li>- [ ] Done</li></ul>|73|[Pashmak and Parmida's problem](http://codeforces.com/problemset/problem/459/D)|Codeforces||Codeforces Round #261 (Div. 2)|3|\n|<ul><li>- [ ] Done</li></ul>|74|[Modular Equations](http://codeforces.com/problemset/problem/495/B)|Codeforces||Codeforces Round #282 (Div. 2)|3|\n|<ul><li>- [ ] Done</li></ul>|75|[Destroying Array](http://codeforces.com/problemset/problem/722/C)|Codeforces||Intel Code Challenge Elimination Round (Div. 1 + Div. 2, combined)|3|\n|<ul><li>- [ ] Done</li></ul>|76|[Stern-Brocot Tree](https://uva.onlinejudge.org/index.php?option=onlinejudge&page=show_problem&problem=2325)|UVA|||3|\n|<ul><li>- [ ] Done</li></ul>|77|[Squares](https://icpcarchive.ecs.baylor.edu/index.php?option=onlinejudge&page=show_problem&problem=1048)|Live Archive|2004|North America - Rocky Mountain|3|\n|<ul><li>- [ ] Done</li></ul>|78|[Interval Product](https://www.urionlinejudge.com.br/judge/en/problems/view/1301)|URI|||3|\n|<ul><li>- [ ] Done</li></ul>|79|[LCM GCD Love](http://www.spoj.com/problems/LGLOVE/)|SPOJ|||4|\n|<ul><li>- [ ] Done</li></ul>|80|[Who is The Boss](http://www.spoj.com/problems/VBOSS/)|SPOJ|||4|\n|<ul><li>- [ ] Done</li></ul>|81|[01 Sequence](http://www.spoj.com/problems/SEQ1/)|SPOJ|||4|\n|<ul><li>- [ ] Done</li></ul>|82|[Enjoy Sum with Operations](http://www.spoj.com/problems/SUMSUM/)|SPOJ|||4|\n|<ul><li>- [ ] Done</li></ul>|83|[Impossible Boss](http://www.spoj.com/problems/DCEPC11I/)|SPOJ|||4|\n|<ul><li>- [ ] Done</li></ul>|84|[Propagating tree](http://codeforces.com/problemset/problem/383/C)|Codeforces||Codeforces Round #225 (Div. 1) & Codeforces Round #225 (Div. 2)|4|\n|<ul><li>- [ ] Done</li></ul>|85|[XOR on Segment](http://codeforces.com/problemset/problem/242/E)|Codeforces||Codeforces Round #149 (Div. 2)|4|\n|<ul><li>- [ ] Done</li></ul>|86|[Lucky Number](https://uva.onlinejudge.org/index.php?option=onlinejudge&page=show_problem&problem=1850)|UVA|||4|\n|<ul><li>- [ ] Done</li></ul>|87|[Query on a tree VII](http://www.spoj.com/problems/QTREE7/)|SPOJ|||4|\n|<ul><li>- [ ] Done</li></ul>|88|[Roots of a Tree](http://www.codechef.com/problems/TROOT)|CodeChef|||4|\n|<ul><li>- [ ] Done</li></ul>|89|[Brute-force Algorithm](https://icpcarchive.ecs.baylor.edu/index.php?option=onlinejudge&page=show_problem&problem=2745)|Live Archive|2009|Asia - Shanghai|4|\n|<ul><li>- [ ] Done</li></ul>|90|[Nested Segments](http://acm.timus.ru/problem.aspx?space=1&num=1987)|Timus|||4|\n|<ul><li>- [ ] Done</li></ul>|91|[SKYLINE](https://uva.onlinejudge.org/index.php?option=onlinejudge&page=show_problem&problem=3673)|UVA|||4|\n|<ul><li>- [ ] Done</li></ul>|92|[Circular RMQ](http://codeforces.com/problemset/problem/52/C)|Codeforces||Codeforces Testing Round #1|4|\n|<ul><li>- [ ] Done</li></ul>|93|[Babaei and Birthday Cake](http://codeforces.com/problemset/problem/629/D)|Codeforces||Codeforces Round #343 (Div. 2)|4|\n|<ul><li>- [ ] Done</li></ul>|94|[Enemy is weak](http://codeforces.com/problemset/problem/61/E)|Codeforces||Codeforces Beta Round #57 (Div. 2)|4|\n|<ul><li>- [ ] Done</li></ul>|95|[Ant colony](http://codeforces.com/problemset/problem/474/F)|Codeforces||Codeforces Round #271 (Div. 2)|4|\n|<ul><li>- [ ] Done</li></ul>|96|[The Closest Pair](http://codeforces.com/problemset/problem/311/A)|Codeforces||Codeforces Round #185 (Div. 1) & Codeforces Round #185 (Div. 2)|4|\n|<ul><li>- [ ] Done</li></ul>|97|[XOR Minimization](http://www.codechef.com/problems/MINXOR)|CodeChef|||4|\n|<ul><li>- [ ] Done</li></ul>|98|[Preparing for Merge Sort](http://codeforces.com/problemset/problem/847/B)|Codeforces||2017-2018 ACM-ICPC, NEERC, Southern Subregional Contest, qualification stage (Online Mirror, ACM-ICPC Rules, Teams Preferred)|4|\n|<ul><li>- [ ] Done</li></ul>|99|[Bash and a Tough Math Puzzle](http://codeforces.com/problemset/problem/914/D)|Codeforces||Codecraft-18 and Codeforces Round #458 (Div. 1 + Div. 2, combined)|4|\n|<ul><li>- [ ] Done</li></ul>|100|[Rip Van Winkle's Code](https://uva.onlinejudge.org/index.php?option=onlinejudge&page=show_problem&problem=3867)|UVA|||5|\n|<ul><li>- [ ] Done</li></ul>|101|[Copying Data](http://codeforces.com/problemset/problem/292/E)|Codeforces||Croc Champ 2013 - Round 1|5|\n|<ul><li>- [ ] Done</li></ul>|102|[``Dynamic'' Inversion](https://uva.onlinejudge.org/index.php?option=onlinejudge&page=show_problem&problem=3141)|UVA|||5|\n|<ul><li>- [ ] Done</li></ul>|103|[Rectangle Query](http://www.codechef.com/problems/QRECT)|CodeChef|||5|\n|<ul><li>- [ ] Done</li></ul>|104|[The Child and Sequence](http://codeforces.com/problemset/problem/438/D)|Codeforces||Codeforces Round #250 (Div. 1)|5|\n|<ul><li>- [ ] Done</li></ul>|105|[Fun with AGp](http://www.codechef.com/problems/FUNAGP)|CodeChef|||5|\n|<ul><li>- [ ] Done</li></ul>|106|[A Simple Task](http://codeforces.com/problemset/problem/558/E)|Codeforces||Codeforces Round #312 (Div. 2)|5|\n|<ul><li>- [ ] Done</li></ul>|107|[Misha and Permutations Summation](http://codeforces.com/problemset/problem/501/D)|Codeforces||Codeforces Round #285 (Div. 2) & Codeforces Round #285 (Div. 1)|5|\n|<ul><li>- [ ] Done</li></ul>|108|[Pillars](http://codeforces.com/problemset/problem/474/E)|Codeforces||Codeforces Round #271 (Div. 2)|5|\n|<ul><li>- [ ] Done</li></ul>|109|[Water Tree](http://codeforces.com/problemset/problem/343/D)|Codeforces||Codeforces Round #200 (Div. 1)|5|\n|<ul><li>- [ ] Done</li></ul>|110|[Tree and Queries](http://codeforces.com/problemset/problem/375/D)|Codeforces||Codeforces Round #221 (Div. 1)|5|\n|<ul><li>- [ ] Done</li></ul>|111|[Cards Sorting](http://codeforces.com/problemset/problem/830/B)|Codeforces||Codeforces Round #424 (Div. 1, rated, based on VK Cup Finals) & Codeforces Round #424 (Div. 2, rated, based on VK Cup Finals)|5|\n|<ul><li>- [ ] Done</li></ul>|112|[PolandBall and Polygon](http://codeforces.com/problemset/problem/755/D)|Codeforces||8VC Venture Cup 2017 - Elimination Round|5|\n|<ul><li>- [ ] Done</li></ul>|113|[R2D2 and Droid Army](http://codeforces.com/problemset/problem/514/D)|Codeforces||Codeforces Round #291 (Div. 2)|5|\n|<ul><li>- [ ] Done</li></ul>|114|[Mishka and Interesting sum](http://codeforces.com/problemset/problem/703/D)|Codeforces||Codeforces Round #365 (Div. 2)|5|\n|<ul><li>- [ ] Done</li></ul>|115|[Factory Repairs](http://codeforces.com/problemset/problem/627/B)|Codeforces||8VC Venture Cup 2016 - Final Round|5|\n|<ul><li>- [ ] Done</li></ul>|116|[Danil and a Part-time Job](http://codeforces.com/problemset/problem/877/E)|Codeforces||Codeforces Round #442 (Div. 2)|5|\n|<ul><li>- [ ] Done</li></ul>|117|[SUM and REPLACE](http://codeforces.com/problemset/problem/920/F)|Codeforces||Educational Codeforces Round 37 (Rated for Div. 2)|5|\n|<ul><li>- [ ] Done</li></ul>|118|[High and Low](http://www.spoj.com/problems/HILO/)|SPOJ|||6|\n|<ul><li>- [ ] Done</li></ul>|119|[On Changing Tree](http://codeforces.com/problemset/problem/396/C)|Codeforces||Codeforces Round #232 (Div. 1) & Codeforces Round #232 (Div. 2)|6|\n|<ul><li>- [ ] Done</li></ul>|120|[DZY Loves Colors](http://codeforces.com/problemset/problem/444/C)|Codeforces||Codeforces Round #254 (Div. 1) & Codeforces Round #254 (Div. 2)|6|\n|<ul><li>- [ ] Done</li></ul>|121|[DZY Loves Fibonacci Numbers](http://codeforces.com/problemset/problem/446/C)|Codeforces||Codeforces Round #255 (Div. 1) & Codeforces Round #255 (Div. 2)|6|\n|<ul><li>- [ ] Done</li></ul>|122|[Segment Tree](http://www.spoj.com/problems/SEGTREE/)|SPOJ|||6|\n|<ul><li>- [ ] Done</li></ul>|123|[Drazil and Park](http://codeforces.com/problemset/problem/515/E)|Codeforces||Codeforces Round #292 (Div. 2) & Codeforces Round #292 (Div. 1)|6|\n|<ul><li>- [ ] Done</li></ul>|124|[Infinite Inversions](http://codeforces.com/problemset/problem/540/E)|Codeforces||Codeforces Round #301 (Div. 2)|6|\n|<ul><li>- [ ] Done</li></ul>|125|[Lucky Queries](http://codeforces.com/problemset/problem/145/E)|Codeforces||Codeforces Round #104 (Div. 1)|6|\n|<ul><li>- [ ] Done</li></ul>|126|[Kefa and Watch](http://codeforces.com/problemset/problem/580/E)|Codeforces||Codeforces Round #321 (Div. 2)|6|\n|<ul><li>- [ ] Done</li></ul>|127|[Valera and Queries](http://codeforces.com/problemset/problem/369/E)|Codeforces||Codeforces Round #216 (Div. 2)|6|\n|<ul><li>- [ ] Done</li></ul>|128|[Yaroslav and Divisors](http://codeforces.com/problemset/problem/301/D)|Codeforces||Codeforces Round #182 (Div. 1)|6|\n|<ul><li>- [ ] Done</li></ul>|129|[New Year Domino](http://codeforces.com/problemset/problem/500/E)|Codeforces||Good Bye 2014|6|\n|<ul><li>- [ ] Done</li></ul>|130|[Subsequences](http://codeforces.com/problemset/problem/597/C)|Codeforces||Testing Round #12|6|\n|<ul><li>- [ ] Done</li></ul>|131|[Turn Off The TV](http://codeforces.com/problemset/problem/863/E)|Codeforces||Educational Codeforces Round 29|6|\n|<ul><li>- [ ] Done</li></ul>|132|[Save the Python Programmers!](https://icpcarchive.ecs.baylor.edu/index.php?option=onlinejudge&page=show_problem&problem=3128)|Live Archive|2010|North America - Pacific Northwest|6|\n|<ul><li>- [ ] Done</li></ul>|133|[Union on Tree](http://www.codechef.com/problems/BTREE)|CodeChef|||7|\n|<ul><li>- [ ] Done</li></ul>|134|[Sign on Fence](http://codeforces.com/problemset/problem/484/E)|Codeforces||Codeforces Round #276 (Div. 1)|7|\n|<ul><li>- [ ] Done</li></ul>|135|[Count The Indexes 2](http://www.spoj.com/problems/CNTINDX2/)|SPOJ|||7|\n|<ul><li>- [ ] Done</li></ul>|136|[Domino Principle](http://codeforces.com/problemset/problem/56/E)|Codeforces||Codeforces Beta Round #52 (Div. 2)|7|\n|<ul><li>- [ ] Done</li></ul>|137|[Little Elephant and Inversions](http://codeforces.com/problemset/problem/220/E)|Codeforces||Codeforces Round #136 (Div. 1)|7|\n|<ul><li>- [ ] Done</li></ul>|138|[Points](http://codeforces.com/problemset/problem/19/D)|Codeforces||Codeforces Beta Round #19|7|\n|<ul><li>- [ ] Done</li></ul>|139|[Lucky Array](http://codeforces.com/problemset/problem/121/E)|Codeforces||Codeforces Beta Round #91 (Div. 1 Only)|7|\n|<ul><li>- [ ] Done</li></ul>|140|[Vika and Segments](http://codeforces.com/problemset/problem/610/D)|Codeforces||Codeforces Round #337 (Div. 2)|7|\n|<ul><li>- [ ] Done</li></ul>|141|[Little Girl and Problem on Trees](http://codeforces.com/problemset/problem/276/E)|Codeforces||Codeforces Round #169 (Div. 2)|7|\n|<ul><li>- [ ] Done</li></ul>|142|[Kool Konstructions](https://uva.onlinejudge.org/index.php?option=onlinejudge&page=show_problem&problem=4622)|UVA|||7|\n|<ul><li>- [ ] Done</li></ul>|143|[Army Creation](http://codeforces.com/problemset/problem/813/E)|Codeforces||Educational Codeforces Round 22|7|\n|<ul><li>- [ ] Done</li></ul>|144|[Segments](p?ID=166)|A2 Online Judge|||7|\n|<ul><li>- [ ] Done</li></ul>|145|[Allowance](https://www.urionlinejudge.com.br/judge/en/problems/view/2546)|URI|||7|\n|<ul><li>- [ ] Done</li></ul>|146|[Blogger language](https://uva.onlinejudge.org/index.php?option=onlinejudge&page=show_problem&problem=4407)|UVA|||8|\n|<ul><li>- [ ] Done</li></ul>|147|[Misha and Palindrome Degree](http://codeforces.com/problemset/problem/501/E)|Codeforces||Codeforces Round #285 (Div. 2) & Codeforces Round #285 (Div. 1)|8|\n|<ul><li>- [ ] Done</li></ul>|148|[Optimize!](http://codeforces.com/problemset/problem/338/E)|Codeforces||Codeforces Round #196 (Div. 1)|8|\n|<ul><li>- [ ] Done</li></ul>|149|[Jeff and Removing Periods](http://codeforces.com/problemset/problem/351/D)|Codeforces||Codeforces Round #204 (Div. 1)|8|\n|<ul><li>- [ ] Done</li></ul>|150|[REQ](http://codeforces.com/problemset/problem/594/D)|Codeforces||Codeforces Round #330 (Div. 1)|8|\n|<ul><li>- [ ] Done</li></ul>|151|[TorCoder](http://codeforces.com/problemset/problem/240/F)|Codeforces||Codeforces Round #145 (Div. 1, ACM-ICPC Rules)|8|\n|<ul><li>- [ ] Done</li></ul>|152|[Linear Kingdom Races](http://codeforces.com/problemset/problem/115/E)|Codeforces||Codeforces Beta Round #87 (Div. 1 Only)|8|\n|<ul><li>- [ ] Done</li></ul>|153|[Alphabet Permutations](http://codeforces.com/problemset/problem/610/E)|Codeforces||Codeforces Round #337 (Div. 2)|8|\n|<ul><li>- [ ] Done</li></ul>|154|[Drazil and Morning Exercise](http://codeforces.com/problemset/problem/516/D)|Codeforces||Codeforces Round #292 (Div. 1)|8|\n|<ul><li>- [ ] Done</li></ul>|155|[Eyes Closed](http://codeforces.com/problemset/problem/895/E)|Codeforces||Codeforces Round #448 (Div. 2)|8|\n|<ul><li>- [ ] Done</li></ul>|156|[Ada and Species](http://www.spoj.com/problems/ADACABAA/)|SPOJ|||8|\n|<ul><li>- [ ] Done</li></ul>|157|[Function](http://codeforces.com/problemset/problem/455/E)|Codeforces||Codeforces Round #260 (Div. 1)|9|\n|<ul><li>- [ ] Done</li></ul>|158|[Camping Groups](http://codeforces.com/problemset/problem/173/E)|Codeforces||Croc Champ 2012 - Round 1|9|\n|<ul><li>- [ ] Done</li></ul>|159|[To the moon](http://acm.tju.edu.cn/toj/showp3913.html)|TJU|||10|\n|<ul><li>- [ ] Done</li></ul>|160|[Tree or not Tree](http://codeforces.com/problemset/problem/117/E)|Codeforces||Codeforces Beta Round #88|10|\n|<ul><li>- [ ] Done</li></ul>|161|[#dynamic-programming&nbsp;(168)</span>](http://www.spoj.com/problems/tag/)|SPOJ|||10|\n|<ul><li>- [ ] Done</li></ul>|162|[Nikita](http://acm.timus.ru/problem.aspx?space=1&num=2042)|Timus|||10|\n"
  },
  {
    "path": "categories/024. Network_Flow/README.md",
    "content": "# 024. Network_Flow\n\n\n| Checkbox | ID | Problem Name|Online Judge|Year|Contest|Difficulty Level|\n|:---:|:---:|:---:|:---:|:---:|:---:|:---:|\n|<ul><li>- [ ] Done</li></ul>|1|[Total Flow](http://www.spoj.com/problems/MTOTALF/)|SPOJ|||1|\n|<ul><li>- [ ] Done</li></ul>|2|[Potholers](http://www.spoj.com/problems/POTHOLE/)|SPOJ|||1|\n|<ul><li>- [ ] Done</li></ul>|3|[Dungeon of Death](http://www.spoj.com/problems/QUEST4/)|SPOJ|||1|\n|<ul><li>- [ ] Done</li></ul>|4|[Fast Maximum Flow](http://www.spoj.com/problems/FASTFLOW/)|SPOJ|||1|\n|<ul><li>- [ ] Done</li></ul>|5|[Fast Maximum Matching](http://www.spoj.com/problems/MATCHING/)|SPOJ|||1|\n|<ul><li>- [ ] Done</li></ul>|6|[Internet Bandwidth](https://uva.onlinejudge.org/index.php?option=onlinejudge&page=show_problem&problem=761)|UVA|||1|\n|<ul><li>- [ ] Done</li></ul>|7|[Remember the A La Mode!](https://icpcarchive.ecs.baylor.edu/index.php?option=onlinejudge&page=show_problem&problem=1563)|Live Archive|2006|World Finals - San Antonio|1|\n|<ul><li>- [ ] Done</li></ul>|8|[Alphacode](http://www.spoj.com/problems/ACODE/)|SPOJ|||1|\n|<ul><li>- [ ] Done</li></ul>|9|[Taxi](http://www.spoj.com/problems/TAXI/)|SPOJ|||1|\n|<ul><li>- [ ] Done</li></ul>|10|[Dangerous Tunnels](https://icpcarchive.ecs.baylor.edu/index.php?option=onlinejudge&page=show_problem&problem=2260)|Live Archive|2008|Asia - Taipei|1|\n|<ul><li>- [ ] Done</li></ul>|11|[Ultra-Fast Mathematician](http://codeforces.com/problemset/problem/61/A)|Codeforces||Codeforces Beta Round #57 (Div. 2)|1|\n|<ul><li>- [ ] Done</li></ul>|12|[Drainage Ditches](http://poj.org/problem?id=1273)|PKU|||1|\n|<ul><li>- [ ] Done</li></ul>|13|[Angels and Devils](http://www.spoj.com/problems/ANGELS/)|SPOJ|||2|\n|<ul><li>- [ ] Done</li></ul>|14|[Baby](http://www.spoj.com/problems/BABY/)|SPOJ|||2|\n|<ul><li>- [ ] Done</li></ul>|15|[Cable TV Network](http://www.spoj.com/problems/CABLETV/)|SPOJ|||2|\n|<ul><li>- [ ] Done</li></ul>|16|[Coconuts](http://www.spoj.com/problems/COCONUTS/)|SPOJ|||2|\n|<ul><li>- [ ] Done</li></ul>|17|[Muddy Fields](http://www.spoj.com/problems/MUDDY/)|SPOJ|||2|\n|<ul><li>- [ ] Done</li></ul>|18|[Selfish Cities](http://www.spoj.com/problems/SCITIES/)|SPOJ|||2|\n|<ul><li>- [ ] Done</li></ul>|19|[Train TimeTable](http://www.spoj.com/problems/TTTABLE/)|SPOJ|||2|\n|<ul><li>- [ ] Done</li></ul>|20|[Dijkstra, Dijkstra.](https://uva.onlinejudge.org/index.php?option=onlinejudge&page=show_problem&problem=1747)|UVA|||2|\n|<ul><li>- [ ] Done</li></ul>|21|[Power Transmission](https://uva.onlinejudge.org/index.php?option=onlinejudge&page=show_problem&problem=1271)|UVA|||2|\n|<ul><li>- [ ] Done</li></ul>|22|[Smart Network Administrator](http://www.spoj.com/problems/NETADMIN/)|SPOJ|||2|\n|<ul><li>- [ ] Done</li></ul>|23|[Optimal Marks](http://www.spoj.com/problems/OPTM/)|SPOJ|||2|\n|<ul><li>- [ ] Done</li></ul>|24|[Entrapment](http://www.spoj.com/problems/EN/)|SPOJ|||2|\n|<ul><li>- [ ] Done</li></ul>|25|[Software Allocation](https://uva.onlinejudge.org/index.php?option=onlinejudge&page=show_problem&problem=195)|UVA|||2|\n|<ul><li>- [ ] Done</li></ul>|26|[My T-shirt suits me](https://uva.onlinejudge.org/index.php?option=onlinejudge&page=show_problem&problem=1986)|UVA|||2|\n|<ul><li>- [ ] Done</li></ul>|27|[Angry Programmer](https://uva.onlinejudge.org/index.php?option=onlinejudge&page=show_problem&problem=2501)|UVA|||2|\n|<ul><li>- [ ] Done</li></ul>|28|[Intergalactic Map](http://www.spoj.com/problems/IM/)|SPOJ|||2|\n|<ul><li>- [ ] Done</li></ul>|29|[Greedy island](http://www.spoj.com/problems/GREED/)|SPOJ|||2|\n|<ul><li>- [ ] Done</li></ul>|30|[Sabotage](https://uva.onlinejudge.org/index.php?option=onlinejudge&page=show_problem&problem=1421)|UVA|||2|\n|<ul><li>- [ ] Done</li></ul>|31|[Internet Bandwidth](https://icpcarchive.ecs.baylor.edu/index.php?option=onlinejudge&page=show_problem&problem=3221)|Live Archive|2000|World Finals - Orlando|2|\n|<ul><li>- [ ] Done</li></ul>|32|[The Problem with the Problem Setter](https://uva.onlinejudge.org/index.php?option=onlinejudge&page=show_problem&problem=1033)|UVA|||2|\n|<ul><li>- [ ] Done</li></ul>|33|[Muddy Fields](http://poj.org/problem?id=2226)|PKU|||2|\n|<ul><li>- [ ] Done</li></ul>|34|[Handball](https://uva.onlinejudge.org/index.php?option=onlinejudge&page=show_problem&problem=4663)|UVA|||2|\n|<ul><li>- [ ] Done</li></ul>|35|[It Can Be Arranged](https://icpcarchive.ecs.baylor.edu/index.php?option=onlinejudge&page=show_problem&problem=4582)|Live Archive|2013|Europe - Southwestern|2|\n|<ul><li>- [ ] Done</li></ul>|36|[Gopher II](https://uva.onlinejudge.org/index.php?option=onlinejudge&page=show_problem&problem=1021)|UVA|||2|\n|<ul><li>- [ ] Done</li></ul>|37|[Cable TV Network](https://icpcarchive.ecs.baylor.edu/index.php?option=onlinejudge&page=show_problem&problem=1032)|Live Archive|2004|Europe - Southeastern|2|\n|<ul><li>- [ ] Done</li></ul>|38|[Route Redundancy](https://icpcarchive.ecs.baylor.edu/index.php?option=onlinejudge&page=show_problem&problem=3815)|Live Archive|2011|North America - Greater NY|2|\n|<ul><li>- [ ] Done</li></ul>|39|[Course](http://acm.tju.edu.cn/toj/showp2842.html)|TJU|||2|\n|<ul><li>- [ ] Done</li></ul>|40|[\"Shortest\" pair of paths](https://icpcarchive.ecs.baylor.edu/index.php?option=onlinejudge&page=show_problem&problem=928)|Live Archive|2006|Europe - Southeastern|2|\n|<ul><li>- [ ] Done</li></ul>|41|[Destroying the bus stations](https://icpcarchive.ecs.baylor.edu/index.php?option=onlinejudge&page=show_problem&problem=2323)|Live Archive|2008|Asia - Beijing|2|\n|<ul><li>- [ ] Done</li></ul>|42|[Going Home](http://acm.tju.edu.cn/toj/showp1636.html)|TJU|||2|\n|<ul><li>- [ ] Done</li></ul>|43|[The Grand Dinner](https://uva.onlinejudge.org/index.php?option=onlinejudge&page=show_problem&problem=1190)|UVA|||2|\n|<ul><li>- [ ] Done</li></ul>|44|[Disjoint Paths](http://www.spoj.com/problems/DISJPATH/)|SPOJ|||3|\n|<ul><li>- [ ] Done</li></ul>|45|[\"Shortest\" pair of paths ](http://www.spoj.com/problems/MSE06I/)|SPOJ|||3|\n|<ul><li>- [ ] Done</li></ul>|46|[A Plug for UNIX](https://uva.onlinejudge.org/index.php?option=onlinejudge&page=show_problem&problem=694)|UVA|||3|\n|<ul><li>- [ ] Done</li></ul>|47|[Data Flow](https://uva.onlinejudge.org/index.php?option=onlinejudge&page=show_problem&problem=1535)|UVA|||3|\n|<ul><li>- [ ] Done</li></ul>|48|[Divisibility Relation](http://www.spoj.com/problems/DIVREL/)|SPOJ|||3|\n|<ul><li>- [ ] Done</li></ul>|49|[MobiZone vs VinaGone](http://www.spoj.com/problems/MOBIVINA/)|SPOJ|||3|\n|<ul><li>- [ ] Done</li></ul>|50|[Steady Cow Assignment](http://www.spoj.com/problems/STEAD/)|SPOJ|||3|\n|<ul><li>- [ ] Done</li></ul>|51|[Councilling](https://uva.onlinejudge.org/index.php?option=onlinejudge&page=show_problem&problem=1452)|UVA|||3|\n|<ul><li>- [ ] Done</li></ul>|52|[Crimewave](https://uva.onlinejudge.org/index.php?option=onlinejudge&page=show_problem&problem=504)|UVA|||3|\n|<ul><li>- [ ] Done</li></ul>|53|[Collectors Problem](https://uva.onlinejudge.org/index.php?option=onlinejudge&page=show_problem&problem=1720)|UVA|||3|\n|<ul><li>- [ ] Done</li></ul>|54|[Maximum Profit](http://www.spoj.com/problems/PROFIT/)|SPOJ|||3|\n|<ul><li>- [ ] Done</li></ul>|55|[Travelling tours](http://www.spoj.com/problems/TOURS/)|SPOJ|||3|\n|<ul><li>- [ ] Done</li></ul>|56|[A Plug for UNIX](http://acm.tju.edu.cn/toj/showp1159.html)|TJU|||3|\n|<ul><li>- [ ] Done</li></ul>|57|[Clever Naming Patterns](https://uva.onlinejudge.org/index.php?option=onlinejudge&page=show_problem&problem=2413)|UVA|||3|\n|<ul><li>- [ ] Done</li></ul>|58|[Down Went The Titanic](https://uva.onlinejudge.org/index.php?option=onlinejudge&page=show_problem&problem=2375)|UVA|||3|\n|<ul><li>- [ ] Done</li></ul>|59|[Safety Grade](https://icpcarchive.ecs.baylor.edu/index.php?option=onlinejudge&page=show_problem&problem=3762)|Live Archive|2011|Europe - Southeastern|3|\n|<ul><li>- [ ] Done</li></ul>|60|[SAM I AM](https://uva.onlinejudge.org/index.php?option=onlinejudge&page=show_problem&problem=2414)|UVA|||3|\n|<ul><li>- [ ] Done</li></ul>|61|[Factors and Multiples](https://uva.onlinejudge.org/index.php?option=onlinejudge&page=show_problem&problem=2100)|UVA|||3|\n|<ul><li>- [ ] Done</li></ul>|62|[Nuts and Bolts](https://uva.onlinejudge.org/index.php?option=onlinejudge&page=show_problem&problem=2079)|UVA|||3|\n|<ul><li>- [ ] Done</li></ul>|63|[Antenna Placement](https://uva.onlinejudge.org/index.php?option=onlinejudge&page=show_problem&problem=1290)|UVA|||3|\n|<ul><li>- [ ] Done</li></ul>|64|[The dog task](https://uva.onlinejudge.org/index.php?option=onlinejudge&page=show_problem&problem=611)|UVA|||3|\n|<ul><li>- [ ] Done</li></ul>|65|[Sorting Slides](https://uva.onlinejudge.org/index.php?option=onlinejudge&page=show_problem&problem=604)|UVA|||3|\n|<ul><li>- [ ] Done</li></ul>|66|[Pahom on Water](https://icpcarchive.ecs.baylor.edu/index.php?option=onlinejudge&page=show_problem&problem=3690)|Live Archive|2011|South Pacific|3|\n|<ul><li>- [ ] Done</li></ul>|67|[Crime Wave - The Sequel](https://uva.onlinejudge.org/index.php?option=onlinejudge&page=show_problem&problem=1687)|UVA|||3|\n|<ul><li>- [ ] Done</li></ul>|68|[Kill the Werewolf](https://icpcarchive.ecs.baylor.edu/index.php?option=onlinejudge&page=show_problem&problem=5918)|Live Archive|2016|Latin America|3|\n|<ul><li>- [ ] Done</li></ul>|69|[Gas Wars](http://www.spoj.com/problems/GASWARS/)|SPOJ|||4|\n|<ul><li>- [ ] Done</li></ul>|70|[Euler Circuit](https://uva.onlinejudge.org/index.php?option=onlinejudge&page=show_problem&problem=1676)|UVA|||4|\n|<ul><li>- [ ] Done</li></ul>|71|[Buy one, get the rest free](https://uva.onlinejudge.org/index.php?option=onlinejudge&page=show_problem&problem=1924)|UVA|||4|\n|<ul><li>- [ ] Done</li></ul>|72|[Matrix Decompressing](https://uva.onlinejudge.org/index.php?option=onlinejudge&page=show_problem&problem=2023)|UVA|||4|\n|<ul><li>- [ ] Done</li></ul>|73|[Monkeys in the Emei Mountain](https://uva.onlinejudge.org/index.php?option=onlinejudge&page=show_problem&problem=2108)|UVA|||4|\n|<ul><li>- [ ] Done</li></ul>|74|[The Black Riders](http://www.spoj.com/problems/AMR12A/)|SPOJ|||4|\n|<ul><li>- [ ] Done</li></ul>|75|[Warehouse](https://uva.onlinejudge.org/index.php?option=onlinejudge&page=show_problem&problem=1829)|UVA|||4|\n|<ul><li>- [ ] Done</li></ul>|76|[Taxi Cab Scheme](https://uva.onlinejudge.org/index.php?option=onlinejudge&page=show_problem&problem=3642)|UVA|||4|\n|<ul><li>- [ ] Done</li></ul>|77|[Gavin's Promise](http://acm.tju.edu.cn/toj/showp2906.html)|TJU|||4|\n|<ul><li>- [ ] Done</li></ul>|78|[Bomb, Divide and Conquer](https://uva.onlinejudge.org/index.php?option=onlinejudge&page=show_problem&problem=1930)|UVA|||4|\n|<ul><li>- [ ] Done</li></ul>|79|[Cat vs. Dog](https://uva.onlinejudge.org/index.php?option=onlinejudge&page=show_problem&problem=3320)|UVA|||4|\n|<ul><li>- [ ] Done</li></ul>|80|[Guardian of Decency](https://uva.onlinejudge.org/index.php?option=onlinejudge&page=show_problem&problem=3235)|UVA|||4|\n|<ul><li>- [ ] Done</li></ul>|81|[Machine Schedule](https://uva.onlinejudge.org/index.php?option=onlinejudge&page=show_problem&problem=3635)|UVA|||4|\n|<ul><li>- [ ] Done</li></ul>|82|[March of the Penguins](https://uva.onlinejudge.org/index.php?option=onlinejudge&page=show_problem&problem=3277)|UVA|||4|\n|<ul><li>- [ ] Done</li></ul>|83|[Bob Laptop Woolmer and Eddie Desktop Barlow](https://uva.onlinejudge.org/index.php?option=onlinejudge&page=show_problem&problem=1013)|UVA|||4|\n|<ul><li>- [ ] Done</li></ul>|84|[Gopher Strategy](https://uva.onlinejudge.org/index.php?option=onlinejudge&page=show_problem&problem=1745)|UVA|||4|\n|<ul><li>- [ ] Done</li></ul>|85|[Weird Fence](https://uva.onlinejudge.org/index.php?option=onlinejudge&page=show_problem&problem=2229)|UVA|||4|\n|<ul><li>- [ ] Done</li></ul>|86|[Golden Tiger Claw](https://uva.onlinejudge.org/index.php?option=onlinejudge&page=show_problem&problem=2378)|UVA|||4|\n|<ul><li>- [ ] Done</li></ul>|87|[Barber of the Army of Mages](http://acm.timus.ru/problem.aspx?space=1&num=1774)|Timus|||5|\n|<ul><li>- [ ] Done</li></ul>|88|[Suiting Weavers](http://www.spoj.com/problems/GCPC11I/)|SPOJ|||5|\n|<ul><li>- [ ] Done</li></ul>|89|[Cable TV Network](http://acm.tju.edu.cn/toj/showp1692.html)|TJU|||5|\n|<ul><li>- [ ] Done</li></ul>|90|[Great Wall of China](https://uva.onlinejudge.org/index.php?option=onlinejudge&page=show_problem&problem=2276)|UVA|||5|\n|<ul><li>- [ ] Done</li></ul>|91|[Air Raid](https://uva.onlinejudge.org/index.php?option=onlinejudge&page=show_problem&problem=3625)|UVA|||5|\n|<ul><li>- [ ] Done</li></ul>|92|[Gourmet and Banquet](http://codeforces.com/problemset/problem/589/F)|Codeforces||2015-2016 ACM-ICPC, NEERC, Southern Subregional Contest (Online Mirror, ACM-ICPC Rules, Teams Preferred)|5|\n|<ul><li>- [ ] Done</li></ul>|93|[Soldier and Traveling](http://codeforces.com/problemset/problem/546/E)|Codeforces||Codeforces Round #304 (Div. 2)|5|\n|<ul><li>- [ ] Done</li></ul>|94|[Array and Operations](http://codeforces.com/problemset/problem/498/C)|Codeforces||Codeforces Round #284 (Div. 1) & Codeforces Round #284 (Div. 2)|5|\n|<ul><li>- [ ] Done</li></ul>|95|[Ciel and Duel](http://codeforces.com/problemset/problem/321/B)|Codeforces||Codeforces Round #190 (Div. 1) & Codeforces Round #190 (Div. 2)|5|\n|<ul><li>- [ ] Done</li></ul>|96|[Leapin' Lizards](http://acm.tju.edu.cn/toj/showp1891.html)|TJU|||5|\n|<ul><li>- [ ] Done</li></ul>|97|[Wukong and Tang Monk](http://acm.tju.edu.cn/toj/showp3309.html)|TJU|||5|\n|<ul><li>- [ ] Done</li></ul>|98|[Treasure Hunting](http://acm.tju.edu.cn/toj/showp3551.html)|TJU|||5|\n|<ul><li>- [ ] Done</li></ul>|99|[Acme Corporation](https://uva.onlinejudge.org/index.php?option=onlinejudge&page=show_problem&problem=2660)|UVA|||5|\n|<ul><li>- [ ] Done</li></ul>|100|[Rooks](https://uva.onlinejudge.org/index.php?option=onlinejudge&page=show_problem&problem=1556)|UVA|||5|\n|<ul><li>- [ ] Done</li></ul>|101|[Maximizing the ICPC](https://uva.onlinejudge.org/index.php?option=onlinejudge&page=show_problem&problem=2434)|UVA|||5|\n|<ul><li>- [ ] Done</li></ul>|102|[All Pairs Maximum Flow](https://uva.onlinejudge.org/index.php?option=onlinejudge&page=show_problem&problem=2641)|UVA|||6|\n|<ul><li>- [ ] Done</li></ul>|103|[Shogi Tournament](https://uva.onlinejudge.org/index.php?option=onlinejudge&page=show_problem&problem=1321)|UVA|||6|\n|<ul><li>- [ ] Done</li></ul>|104|[Winger Trial](https://uva.onlinejudge.org/index.php?option=onlinejudge&page=show_problem&problem=2857)|UVA|||6|\n|<ul><li>- [ ] Done</li></ul>|105|[Component Placement](https://uva.onlinejudge.org/index.php?option=onlinejudge&page=show_problem&problem=2865)|UVA|||6|\n|<ul><li>- [ ] Done</li></ul>|106|[Necklace](https://uva.onlinejudge.org/index.php?option=onlinejudge&page=show_problem&problem=3683)|UVA|||6|\n|<ul><li>- [ ] Done</li></ul>|107|[Non-Secret Cypher](http://codeforces.com/problemset/problem/190/D)|Codeforces||Codeforces Round #120 (Div. 2)|6|\n|<ul><li>- [ ] Done</li></ul>|108|[Military patrol](http://www.spoj.com/problems/MILPATR/)|SPOJ|||6|\n|<ul><li>- [ ] Done</li></ul>|109|[Delivery Bears](http://codeforces.com/problemset/problem/653/D)|Codeforces||IndiaHacks 2016 - Online Edition (Div. 1 + Div. 2)|6|\n|<ul><li>- [ ] Done</li></ul>|110|[Fox And Dinner](http://codeforces.com/problemset/problem/510/E)|Codeforces||Codeforces Round #290 (Div. 2) & Codeforces Round #290 (Div. 1)|6|\n|<ul><li>- [ ] Done</li></ul>|111|[Flawed Flow](http://codeforces.com/problemset/problem/269/C)|Codeforces||Codeforces Round #165 (Div. 1) & Codeforces Round #165 (Div. 2)|6|\n|<ul><li>- [ ] Done</li></ul>|112|[Mining Station on the Sea](https://icpcarchive.ecs.baylor.edu/index.php?option=onlinejudge&page=show_problem&problem=2315)|Live Archive|2008|Asia - Harbin|6|\n|<ul><li>- [ ] Done</li></ul>|113|[Thieves](http://acm.tju.edu.cn/toj/showp3591.html)|TJU|||6|\n|<ul><li>- [ ] Done</li></ul>|114|[Elegant Strings](https://uva.onlinejudge.org/index.php?option=onlinejudge&page=show_problem&problem=2376)|UVA|||6|\n|<ul><li>- [ ] Done</li></ul>|115|[Its all about the Bandwidth](https://uva.onlinejudge.org/index.php?option=onlinejudge&page=show_problem&problem=2650)|UVA|||6|\n|<ul><li>- [ ] Done</li></ul>|116|[Mysterious Mountain](https://uva.onlinejudge.org/index.php?option=onlinejudge&page=show_problem&problem=1063)|UVA|||6|\n|<ul><li>- [ ] Done</li></ul>|117|[Gridland Airports](https://uva.onlinejudge.org/index.php?option=onlinejudge&page=show_problem&problem=2766)|UVA|||6|\n|<ul><li>- [ ] Done</li></ul>|118|[Faster Processing Feasibility](https://uva.onlinejudge.org/index.php?option=onlinejudge&page=show_problem&problem=2343)|UVA|||7|\n|<ul><li>- [ ] Done</li></ul>|119|[Recruiter's Problem](https://uva.onlinejudge.org/index.php?option=onlinejudge&page=show_problem&problem=2539)|UVA|||7|\n|<ul><li>- [ ] Done</li></ul>|120|[Build String](http://codeforces.com/problemset/problem/237/E)|Codeforces||Codeforces Round #147 (Div. 2)|7|\n|<ul><li>- [ ] Done</li></ul>|121|[Budget](http://acm.tju.edu.cn/toj/showp2616.html)|TJU|||7|\n|<ul><li>- [ ] Done</li></ul>|122|[Binary Tree on Plane](http://codeforces.com/problemset/problem/277/E)|Codeforces||Codeforces Round #170 (Div. 1)|7|\n|<ul><li>- [ ] Done</li></ul>|123|[Task Schedule](http://acm.tju.edu.cn/toj/showp3672.html)|TJU|||7|\n|<ul><li>- [ ] Done</li></ul>|124|[It Can Be Arranged](https://uva.onlinejudge.org/index.php?option=onlinejudge&page=show_problem&problem=4417)|UVA|||7|\n|<ul><li>- [ ] Done</li></ul>|125|[Delivering Goods](https://icpcarchive.ecs.baylor.edu/index.php?option=onlinejudge&page=show_problem&problem=6008)|Live Archive|2016| \tNorth America - North Central NA & North America - Rocky Mountain|7|\n|<ul><li>- [ ] Done</li></ul>|126|[Machine Programming](http://codeforces.com/problemset/problem/164/C)|Codeforces||VK Cup 2012 Round 3|8|\n|<ul><li>- [ ] Done</li></ul>|127|[Petya and Pipes](http://codeforces.com/problemset/problem/362/E)|Codeforces||Codeforces Round #212 (Div. 2)|8|\n|<ul><li>- [ ] Done</li></ul>|128|[Tidying Up](http://codeforces.com/problemset/problem/316/C2)|Codeforces||ABBYY Cup 3.0|8|\n|<ul><li>- [ ] Done</li></ul>|129|[Tidying Up](http://codeforces.com/problemset/problem/316/C1)|Codeforces||ABBYY Cup 3.0|8|\n|<ul><li>- [ ] Done</li></ul>|130|[k-Maximum Subsequence Sum](http://codeforces.com/problemset/problem/280/D)|Codeforces||Codeforces Round #172 (Div. 1)|8|\n|<ul><li>- [ ] Done</li></ul>|131|[HS BDC](http://acm.tju.edu.cn/toj/showp3555.html)|TJU|||8|\n|<ul><li>- [ ] Done</li></ul>|132|[A New Graph Game](http://acm.tju.edu.cn/toj/showp3526.html)|TJU|||8|\n|<ul><li>- [ ] Done</li></ul>|133|[Subway Timing](https://uva.onlinejudge.org/index.php?option=onlinejudge&page=show_problem&problem=3529)|UVA|||8|\n|<ul><li>- [ ] Done</li></ul>|134|[Gosha is hunting](http://codeforces.com/problemset/problem/739/E)|Codeforces||Codeforces Round #381 (Div. 1)|8|\n|<ul><li>- [ ] Done</li></ul>|135|[Bangladesh Premier League](https://uva.onlinejudge.org/index.php?option=onlinejudge&page=show_problem&problem=2689)|UVA|||9|\n|<ul><li>- [ ] Done</li></ul>|136|[Bits of merry old England](http://codeforces.com/problemset/problem/132/E)|Codeforces||Codeforces Beta Round #96 (Div. 1)|9|\n|<ul><li>- [ ] Done</li></ul>|137|[Buying Sets](http://codeforces.com/problemset/problem/103/E)|Codeforces||Codeforces Beta Round #80 (Div. 1 Only)|9|\n|<ul><li>- [ ] Done</li></ul>|138|[Evacuation](http://codeforces.com/problemset/problem/78/E)|Codeforces||Codeforces Beta Round #70 (Div. 2)|9|\n|<ul><li>- [ ] Done</li></ul>|139|[Bear and Fair Set](http://codeforces.com/problemset/problem/628/F)|Codeforces||Educational Codeforces Round 8|9|\n|<ul><li>- [ ] Done</li></ul>|140|[Scaygerboss](http://codeforces.com/problemset/problem/513/F2)|Codeforces||Rockethon 2015|9|\n|<ul><li>- [ ] Done</li></ul>|141|[Scaygerboss](http://codeforces.com/problemset/problem/513/F1)|Codeforces||Rockethon 2015|9|\n|<ul><li>- [ ] Done</li></ul>|142|[Deciphering](http://codeforces.com/problemset/problem/491/C)|Codeforces||Testing Round #11|9|\n|<ul><li>- [ ] Done</li></ul>|143|[Nanami's Power Plant](http://codeforces.com/problemset/problem/434/D)|Codeforces||Codeforces Round #248 (Div. 1)|9|\n|<ul><li>- [ ] Done</li></ul>|144|[Pumping Stations](http://codeforces.com/problemset/problem/343/E)|Codeforces||Codeforces Round #200 (Div. 1)|9|\n|<ul><li>- [ ] Done</li></ul>|145|[Biologist](http://codeforces.com/problemset/problem/311/E)|Codeforces||Codeforces Round #185 (Div. 1)|9|\n|<ul><li>- [ ] Done</li></ul>|146|[Seikimatsu Occult Tonneru](http://acm.tju.edu.cn/toj/showp3874.html)|TJU|||9|\n|<ul><li>- [ ] Done</li></ul>|147|[Judgment Day](https://uva.onlinejudge.org/index.php?option=onlinejudge&page=show_problem&problem=2694)|UVA|||9|\n|<ul><li>- [ ] Done</li></ul>|148|[Privatization](http://codeforces.com/problemset/problem/212/A)|Codeforces||VK Cup 2012 Finals (unofficial online-version)|10|\n|<ul><li>- [ ] Done</li></ul>|149|[Pills](http://codeforces.com/problemset/problem/126/E)|Codeforces||Codeforces Beta Round #93 (Div. 1 Only)|10|\n|<ul><li>- [ ] Done</li></ul>|150|[World Evil](http://codeforces.com/problemset/problem/62/E)|Codeforces||Codeforces Beta Round #58|10|\n|<ul><li>- [ ] Done</li></ul>|151|[Max Flow Minimum Cost](http://www.spoj.com/problems/MAXFLOWW/)|SPOJ|||10|\n|<ul><li>- [ ] Done</li></ul>|152|[Critical Network Lines](p?ID=226)|A2 Online Judge|||10|\n|<ul><li>- [ ] Done</li></ul>|153|[New Year  and Forgotten Tree](http://codeforces.com/problemset/problem/611/H)|Codeforces||Good Bye 2015|10|\n|<ul><li>- [ ] Done</li></ul>|154|[Flow Optimality](http://codeforces.com/problemset/problem/457/E)|Codeforces||MemSQL Start[c]UP 2.0 - Round 2|10|\n|<ul><li>- [ ] Done</li></ul>|155|[Planar Graph](http://codeforces.com/problemset/problem/223/E)|Codeforces||Codeforces Round #138 (Div. 1)|10|\n|<ul><li>- [ ] Done</li></ul>|156|[Chess Championship](http://codeforces.com/problemset/problem/736/E)|Codeforces||Codeforces Round #382 (Div. 1)|10|\n|<ul><li>- [ ] Done</li></ul>|157|[Shake It!](http://codeforces.com/problemset/problem/848/D)|Codeforces||Codeforces Round #431 (Div. 1)|10|\n|<ul><li>- [ ] Done</li></ul>|158|[ALT](http://codeforces.com/problemset/problem/786/E)|Codeforces||Codeforces Round #406 (Div. 1)|10|\n|<ul><li>- [ ] Done</li></ul>|159|[Captain America](http://codeforces.com/problemset/problem/704/D)|Codeforces||Codeforces Round #366 (Div. 1)|10|\n"
  },
  {
    "path": "categories/025. probabilities/README.md",
    "content": "# 025. probabilities\n\n\n| Checkbox | ID | Problem Name|Online Judge|Year|Contest|Difficulty Level|\n|:---:|:---:|:---:|:---:|:---:|:---:|:---:|\n|<ul><li>- [ ] Done</li></ul>|1|[Die Roll](http://codeforces.com/problemset/problem/9/A)|Codeforces||Codeforces Beta Round #9 (Div. 2 Only)|1|\n|<ul><li>- [ ] Done</li></ul>|2|[To the Max](http://poj.org/problem?id=1050)|PKU|||1|\n|<ul><li>- [ ] Done</li></ul>|3|[Cows and Cars](https://uva.onlinejudge.org/index.php?option=onlinejudge&page=show_problem&problem=1432)|UVA|||1|\n|<ul><li>- [ ] Done</li></ul>|4|[Yanu in Movie theatre](http://www.spoj.com/problems/FUNPROB/)|SPOJ|||1|\n|<ul><li>- [ ] Done</li></ul>|5|[Dreamoon and WiFi](http://codeforces.com/problemset/problem/476/B)|Codeforces||Codeforces Round #272 (Div. 2)|1|\n|<ul><li>- [ ] Done</li></ul>|6|[What is the Probability ?](https://uva.onlinejudge.org/index.php?option=onlinejudge&page=show_problem&problem=997)|UVA|||1|\n|<ul><li>- [ ] Done</li></ul>|7|[Probability One](https://icpcarchive.ecs.baylor.edu/index.php?option=onlinejudge&page=show_problem&problem=2737)|Live Archive|2009|Africa/Middle East - Africa and Arab|1|\n|<ul><li>- [ ] Done</li></ul>|8|[Counting Extra Stars](p?ID=356)|A2 Online Judge|||1|\n|<ul><li>- [ ] Done</li></ul>|9|[Archer](http://codeforces.com/problemset/problem/312/B)|Codeforces||Codeforces Round #185 (Div. 2)|2|\n|<ul><li>- [ ] Done</li></ul>|10|[Collecting Bugs](http://poj.org/problem?id=2096)|PKU|||2|\n|<ul><li>- [ ] Done</li></ul>|11|[Football](http://poj.org/problem?id=3071)|PKU|||2|\n|<ul><li>- [ ] Done</li></ul>|12|[Check the difficulty of problems](http://poj.org/problem?id=2151)|PKU|||2|\n|<ul><li>- [ ] Done</li></ul>|13|[One Person Game](http://acm.zju.edu.cn/onlinejudge/showProblem.do?problemCode=3329)|ZOJ|||2|\n|<ul><li>- [ ] Done</li></ul>|14|[Help Me Escape](http://acm.zju.edu.cn/onlinejudge/showProblem.do?problemCode=3640)|ZOJ|||2|\n|<ul><li>- [ ] Done</li></ul>|15|[Little Pony and Expected Maximum](http://codeforces.com/problemset/problem/453/A)|Codeforces||Codeforces Round #259 (Div. 1) & Codeforces Round #259 (Div. 2)|2|\n|<ul><li>- [ ] Done</li></ul>|16|[Dice Throwing](https://uva.onlinejudge.org/index.php?option=onlinejudge&page=show_problem&problem=1700)|UVA|||2|\n|<ul><li>- [ ] Done</li></ul>|17|[France '98](https://uva.onlinejudge.org/index.php?option=onlinejudge&page=show_problem&problem=483)|UVA|||2|\n|<ul><li>- [ ] Done</li></ul>|18|[Journey](http://codeforces.com/problemset/problem/839/C)|Codeforces||Codeforces Round #428 (Div. 2)|2|\n|<ul><li>- [ ] Done</li></ul>|19|[BirthdayOdds](http://community.topcoder.com/stat?c=problem_statement&pm=1848)|TopCoder||SRM 174 - Div1 easy - Div2 medium] (4675)|3|\n|<ul><li>- [ ] Done</li></ul>|20|[PipeCuts](http://community.topcoder.com/stat?c=problem_statement&pm=3994)|TopCoder||SRM 233 - Div1 easy - Div2 medium] (6532)|3|\n|<ul><li>- [ ] Done</li></ul>|21|[Coupons](https://uva.onlinejudge.org/index.php?option=onlinejudge&page=show_problem&problem=1229)|UVA|||3|\n|<ul><li>- [ ] Done</li></ul>|22|[Burger](https://uva.onlinejudge.org/index.php?option=onlinejudge&page=show_problem&problem=498)|UVA|||3|\n|<ul><li>- [ ] Done</li></ul>|23|[Scout YYF I](http://poj.org/problem?id=3744)|PKU|||3|\n|<ul><li>- [ ] Done</li></ul>|24|[Chocolate](http://poj.org/problem?id=1322)|PKU|||3|\n|<ul><li>- [ ] Done</li></ul>|25|[?????](http://poj.org/problem?id=1189)|PKU|||3|\n|<ul><li>- [ ] Done</li></ul>|26|[Hats](https://uva.onlinejudge.org/index.php?option=onlinejudge&page=show_problem&problem=3175)|UVA|||3|\n|<ul><li>- [ ] Done</li></ul>|27|[Wet Shark and Flowers](http://codeforces.com/problemset/problem/621/C)|Codeforces||Codeforces Round #341 (Div. 2)|3|\n|<ul><li>- [ ] Done</li></ul>|28|[Ilya and Escalator](http://codeforces.com/problemset/problem/518/D)|Codeforces||Codeforces Round #293 (Div. 2)|3|\n|<ul><li>- [ ] Done</li></ul>|29|[Andrey and Problem](http://codeforces.com/problemset/problem/442/B)|Codeforces||Codeforces Round #253 (Div. 1) & Codeforces Round #253 (Div. 2)|3|\n|<ul><li>- [ ] Done</li></ul>|30|[Another lottery](https://uva.onlinejudge.org/index.php?option=onlinejudge&page=show_problem&problem=2675)|UVA|||3|\n|<ul><li>- [ ] Done</li></ul>|31|[So you want to be a 2n-aire?](https://uva.onlinejudge.org/index.php?option=onlinejudge&page=show_problem&problem=1841)|UVA|||3|\n|<ul><li>- [ ] Done</li></ul>|32|[PrimeSoccer](http://community.topcoder.com/stat?c=problem_statement&pm=10033)|TopCoder||SRM 422 - Div1 easy - Div2 medium] (13513)|3|\n|<ul><li>- [ ] Done</li></ul>|33|[FixedDiceGameDiv1](http://community.topcoder.com/stat?c=problem_statement&pm=13239)|TopCoder||SRM 626 - Div1 easy] (15859)|3|\n|<ul><li>- [ ] Done</li></ul>|34|[PalindromicSubstringsDiv1](http://community.topcoder.com/stat?c=problem_statement&pm=12964)|TopCoder||Unknown ()|3|\n|<ul><li>- [ ] Done</li></ul>|35|[Bag of mice](http://codeforces.com/problemset/problem/148/D)|Codeforces||Codeforces Round #105 (Div. 2)|4|\n|<ul><li>- [ ] Done</li></ul>|36|[Vampires](https://uva.onlinejudge.org/index.php?option=onlinejudge&page=show_problem&problem=2495)|UVA|||4|\n|<ul><li>- [ ] Done</li></ul>|37|[God! Save me](https://uva.onlinejudge.org/index.php?option=onlinejudge&page=show_problem&problem=1718)|UVA|||4|\n|<ul><li>- [ ] Done</li></ul>|38|[Expect the Expected](https://uva.onlinejudge.org/index.php?option=onlinejudge&page=show_problem&problem=2422)|UVA|||4|\n|<ul><li>- [ ] Done</li></ul>|39|[Dumb Bones](https://uva.onlinejudge.org/index.php?option=onlinejudge&page=show_problem&problem=1470)|UVA|||4|\n|<ul><li>- [ ] Done</li></ul>|40|[Panda's Birthday Present](http://poj.org/problem?id=3716)|PKU|||4|\n|<ul><li>- [ ] Done</li></ul>|41|[Patchouli's Spell Cards](http://acm.zju.edu.cn/onlinejudge/showProblem.do?problemCode=3380)|ZOJ|||4|\n|<ul><li>- [ ] Done</li></ul>|42|[Bad Luck Island](http://codeforces.com/problemset/problem/540/D)|Codeforces||Codeforces Round #301 (Div. 2)|4|\n|<ul><li>- [ ] Done</li></ul>|43|[Race to 1](https://uva.onlinejudge.org/index.php?option=onlinejudge&page=show_problem&problem=2862)|UVA|||4|\n|<ul><li>- [ ] Done</li></ul>|44|[Probability](https://uva.onlinejudge.org/index.php?option=onlinejudge&page=show_problem&problem=2321)|UVA|||4|\n|<ul><li>- [ ] Done</li></ul>|45|[Winning Streak](https://uva.onlinejudge.org/index.php?option=onlinejudge&page=show_problem&problem=2117)|UVA|||4|\n|<ul><li>- [ ] Done</li></ul>|46|[Chocolate Box](https://uva.onlinejudge.org/index.php?option=onlinejudge&page=show_problem&problem=1589)|UVA|||4|\n|<ul><li>- [ ] Done</li></ul>|47|[Boastin' Red Socks](https://uva.onlinejudge.org/index.php?option=onlinejudge&page=show_problem&problem=1218)|UVA|||4|\n|<ul><li>- [ ] Done</li></ul>|48|[Urn-ball Probabilities!](https://uva.onlinejudge.org/index.php?option=onlinejudge&page=show_problem&problem=1110)|UVA|||4|\n|<ul><li>- [ ] Done</li></ul>|49|[MonstersAndBunnies](http://community.topcoder.com/stat?c=problem_statement&pm=8595)|TopCoder||TCO08 Qual 1 - Div1 easy] (12007)|4|\n|<ul><li>- [ ] Done</li></ul>|50|[Basketball Team](http://codeforces.com/problemset/problem/107/B)|Codeforces||Codeforces Beta Round #83 (Div. 1 Only) & Codeforces Beta Round #83 (Div. 2 Only)|5|\n|<ul><li>- [ ] Done</li></ul>|51|[Falling Anvils](http://codeforces.com/problemset/problem/77/B)|Codeforces||Codeforces Beta Round #69 (Div. 1 Only) & Codeforces Beta Round #69 (Div. 2 Only)|5|\n|<ul><li>- [ ] Done</li></ul>|52|[ProbabilityTree](http://community.topcoder.com/stat?c=problem_statement&pm=2234)|TopCoder||SRM 174 - Div2 hard] (4675)|5|\n|<ul><li>- [ ] Done</li></ul>|53|[ChessKnight](http://community.topcoder.com/stat?c=problem_statement&pm=3509)|TopCoder||TCCC05 Round 1 - Div1 medium] (6528)|5|\n|<ul><li>- [ ] Done</li></ul>|54|[Collision](http://community.topcoder.com/stat?c=problem_statement&pm=1771)|TopCoder||SRM 153 - Div1 medium] (4570)|5|\n|<ul><li>- [ ] Done</li></ul>|55|[Jerry's Protest](http://codeforces.com/problemset/problem/626/D)|Codeforces||8VC Venture Cup 2016 - Elimination Round|5|\n|<ul><li>- [ ] Done</li></ul>|56|[Jeff and Furik](http://codeforces.com/problemset/problem/351/B)|Codeforces||Codeforces Round #204 (Div. 1) & Codeforces Round #204 (Div. 2)|5|\n|<ul><li>- [ ] Done</li></ul>|57|[Joining with Friend](https://uva.onlinejudge.org/index.php?option=onlinejudge&page=show_problem&problem=2769)|UVA|||5|\n|<ul><li>- [ ] Done</li></ul>|58|[Dragster](https://uva.onlinejudge.org/index.php?option=onlinejudge&page=show_problem&problem=2727)|UVA|||5|\n|<ul><li>- [ ] Done</li></ul>|59|[Lights inside a 3d Grid](https://uva.onlinejudge.org/index.php?option=onlinejudge&page=show_problem&problem=2652)|UVA|||5|\n|<ul><li>- [ ] Done</li></ul>|60|[Masud Rana](https://uva.onlinejudge.org/index.php?option=onlinejudge&page=show_problem&problem=2647)|UVA|||5|\n|<ul><li>- [ ] Done</li></ul>|61|[RandomSwaps](http://community.topcoder.com/stat?c=problem_statement&pm=7289)|TopCoder||SRM 338 - Div1 medium] (10662)|5|\n|<ul><li>- [ ] Done</li></ul>|62|[KthProbableElement](http://community.topcoder.com/stat?c=problem_statement&pm=10335)|TopCoder||TCO09 Round 1 - Div1 medium] (13759)|5|\n|<ul><li>- [ ] Done</li></ul>|63|[LotteryPyaterochka](http://community.topcoder.com/stat?c=problem_statement&pm=10863)|TopCoder||SRM 466 - Div1 medium] (14150)|5|\n|<ul><li>- [ ] Done</li></ul>|64|[RandomSort](http://community.topcoder.com/stat?c=problem_statement&pm=8590)|TopCoder||SRM 402 - Div1 easy - Div2 hard] (12174)|5|\n|<ul><li>- [ ] Done</li></ul>|65|[QuickSort](http://community.topcoder.com/stat?c=problem_statement&pm=10996)|TopCoder||SRM 486 - Div1 medium] (14239)|5|\n|<ul><li>- [ ] Done</li></ul>|66|[RedIsGood](http://community.topcoder.com/stat?c=problem_statement&pm=9915)|TopCoder||SRM 420 - Div1 medium] (13511)|5|\n|<ul><li>- [ ] Done</li></ul>|67|[TestBettingStrategy](http://community.topcoder.com/stat?c=problem_statement&pm=7422)|TopCoder||SRM 339 - Div1 medium] (10663)|5|\n|<ul><li>- [ ] Done</li></ul>|68|[CampaignTrail](http://community.topcoder.com/stat?c=problem_statement&pm=10188)|TopCoder||TCO09 Round 3 - Div1 medium] (13761)|5|\n|<ul><li>- [ ] Done</li></ul>|69|[PerfectMemory](http://community.topcoder.com/stat?c=problem_statement&pm=11500)|TopCoder||SRM 513 - Div1 medium] (14538)|5|\n|<ul><li>- [ ] Done</li></ul>|70|[CandyBox](http://community.topcoder.com/stat?c=problem_statement&pm=10744)|TopCoder||SRM 462 - Div1 medium] (14147)|5|\n|<ul><li>- [ ] Done</li></ul>|71|[TheFansAndMeetingsDivOne](http://community.topcoder.com/stat?c=problem_statement&pm=10771)|TopCoder||SRM 460 - Div1 medium] (14146)|5|\n|<ul><li>- [ ] Done</li></ul>|72|[DrawingLines](http://community.topcoder.com/stat?c=problem_statement&pm=10735)|TopCoder||SRM 470 - Div1 medium] (14153)|5|\n|<ul><li>- [ ] Done</li></ul>|73|[Let's Play Osu!](http://codeforces.com/problemset/problem/235/B)|Codeforces||Codeforces Round #146 (Div. 1) & Codeforces Round #146 (Div. 2)|6|\n|<ul><li>- [ ] Done</li></ul>|74|[Wizards and Huge Prize](http://codeforces.com/problemset/problem/167/B)|Codeforces||Codeforces Round #114 (Div. 1) & Codeforces Round #114 (Div. 2)|6|\n|<ul><li>- [ ] Done</li></ul>|75|[Lucky Probability](http://codeforces.com/problemset/problem/109/B)|Codeforces||Codeforces Beta Round #84 (Div. 1 Only) & Codeforces Beta Round #84 (Div. 2 Only)|6|\n|<ul><li>- [ ] Done</li></ul>|76|[Shooting Gallery](http://codeforces.com/problemset/problem/30/C)|Codeforces||Codeforces Beta Round #30 (Codeforces format)|6|\n|<ul><li>- [ ] Done</li></ul>|77|[Fish](http://codeforces.com/problemset/problem/16/E)|Codeforces||Codeforces Beta Round #16 (Div. 2 Only)|6|\n|<ul><li>- [ ] Done</li></ul>|78|[Join two kingdoms](https://uva.onlinejudge.org/index.php?option=onlinejudge&page=show_problem&problem=4415)|UVA|||6|\n|<ul><li>- [ ] Done</li></ul>|79|[ETS Problem setting](https://uva.onlinejudge.org/index.php?option=onlinejudge&page=show_problem&problem=2425)|UVA|||6|\n|<ul><li>- [ ] Done</li></ul>|80|[Magic Trick](http://codeforces.com/problemset/problem/452/C)|Codeforces||MemSQL Start[c]UP 2.0 - Round 1|6|\n|<ul><li>- [ ] Done</li></ul>|81|[Map Generator](http://poj.org/problem?id=3557)|PKU|||6|\n|<ul><li>- [ ] Done</li></ul>|82|[Chess Game](http://poj.org/problem?id=3756)|PKU|||6|\n|<ul><li>- [ ] Done</li></ul>|83|[Second price auction](http://codeforces.com/problemset/problem/513/C)|Codeforces||Rockethon 2015|6|\n|<ul><li>- [ ] Done</li></ul>|84|[Game on Tree](http://codeforces.com/problemset/problem/280/C)|Codeforces||Codeforces Round #172 (Div. 1) & Codeforces Round #172 (Div. 2)|6|\n|<ul><li>- [ ] Done</li></ul>|85|[Maxim and Restaurant](http://codeforces.com/problemset/problem/261/B)|Codeforces||Codeforces Round #160 (Div. 1) & Codeforces Round #160 (Div. 2)|6|\n|<ul><li>- [ ] Done</li></ul>|86|[Prisoners, Boxes and Pieces of Paper](https://uva.onlinejudge.org/index.php?option=onlinejudge&page=show_problem&problem=2059)|UVA|||6|\n|<ul><li>- [ ] Done</li></ul>|87|[AlternatingLane](http://community.topcoder.com/stat?c=problem_statement&pm=11309)|TopCoder||Member SRM 494 - Div1 medium - Div2 hard] (14423)|6|\n|<ul><li>- [ ] Done</li></ul>|88|[ZS and The Birthday Paradox](http://codeforces.com/problemset/problem/711/E)|Codeforces||Codeforces Round #369 (Div. 2)|6|\n|<ul><li>- [ ] Done</li></ul>|89|[Ada and Island](http://www.spoj.com/problems/ADASEA/)|SPOJ|||6|\n|<ul><li>- [ ] Done</li></ul>|90|[Little Elephant and Furik and Rubik](http://codeforces.com/problemset/problem/204/C)|Codeforces||Codeforces Round #129 (Div. 1) & Codeforces Round #129 (Div. 2)|7|\n|<ul><li>- [ ] Done</li></ul>|91|[Mushroom Gnomes - 2](http://codeforces.com/problemset/problem/138/C)|Codeforces||Codeforces Beta Round #99 (Div. 1) & Codeforces Beta Round #99 (Div. 2)|7|\n|<ul><li>- [ ] Done</li></ul>|92|[Dark Assembly](http://codeforces.com/problemset/problem/105/B)|Codeforces||Codeforces Beta Round #81|7|\n|<ul><li>- [ ] Done</li></ul>|93|[First Digit Law](http://codeforces.com/problemset/problem/54/C)|Codeforces||Codeforces Beta Round #50|7|\n|<ul><li>- [ ] Done</li></ul>|94|[Playing War](https://uva.onlinejudge.org/index.php?option=onlinejudge&page=show_problem&problem=2002)|UVA|||7|\n|<ul><li>- [ ] Done</li></ul>|95|[Little Artem and Random Variable](http://codeforces.com/problemset/problem/641/D)|Codeforces||VK Cup 2016 - Round 2|7|\n|<ul><li>- [ ] Done</li></ul>|96|[Famil Door and Roads](http://codeforces.com/problemset/problem/629/E)|Codeforces||Codeforces Round #343 (Div. 2)|7|\n|<ul><li>- [ ] Done</li></ul>|97|[Kleofáš and the n-thlon](http://codeforces.com/problemset/problem/601/C)|Codeforces||Codeforces Round #333 (Div. 1) & Codeforces Round #333 (Div. 2)|7|\n|<ul><li>- [ ] Done</li></ul>|98|[Name That Tune](http://codeforces.com/problemset/problem/498/B)|Codeforces||Codeforces Round #284 (Div. 1) & Codeforces Round #284 (Div. 2)|7|\n|<ul><li>- [ ] Done</li></ul>|99|[DZY Loves FFT](http://codeforces.com/problemset/problem/444/B)|Codeforces||Codeforces Round #254 (Div. 1) & Codeforces Round #254 (Div. 2)|7|\n|<ul><li>- [ ] Done</li></ul>|100|[Square Table](http://codeforces.com/problemset/problem/417/E)|Codeforces||RCC 2014 Warmup (Div. 2) & RCC 2014 Warmup (Div. 1)|7|\n|<ul><li>- [ ] Done</li></ul>|101|[Painting The Wall](http://codeforces.com/problemset/problem/398/B)|Codeforces||Codeforces Round #233 (Div. 1) & Codeforces Round #233 (Div. 2)|7|\n|<ul><li>- [ ] Done</li></ul>|102|[Playlist](http://codeforces.com/problemset/problem/268/E)|Codeforces||Codeforces Round #164 (Div. 2)|7|\n|<ul><li>- [ ] Done</li></ul>|103|[Dexterina’s Lab](http://codeforces.com/problemset/problem/717/D)|Codeforces||Bubble Cup 9 - Finals [Online Mirror]|7|\n|<ul><li>- [ ] Done</li></ul>|104|[Table Tennis](https://uva.onlinejudge.org/index.php?option=onlinejudge&page=show_problem&problem=2855)|UVA|||7|\n|<ul><li>- [ ] Done</li></ul>|105|[Garbage Remembering Exam](https://uva.onlinejudge.org/index.php?option=onlinejudge&page=show_problem&problem=2684)|UVA|||7|\n|<ul><li>- [ ] Done</li></ul>|106|[Gifts](http://codeforces.com/problemset/problem/229/E)|Codeforces||Codeforces Round #142 (Div. 1)|8|\n|<ul><li>- [ ] Done</li></ul>|107|[Smart Cheater](http://codeforces.com/problemset/problem/150/C)|Codeforces||Codeforces Round #107 (Div. 1) & Codeforces Round #107 (Div. 2)|8|\n|<ul><li>- [ ] Done</li></ul>|108|[Castle](http://codeforces.com/problemset/problem/101/D)|Codeforces||Codeforces Beta Round #79 (Div. 1 Only)|8|\n|<ul><li>- [ ] Done</li></ul>|109|[Petya and Tree](http://codeforces.com/problemset/problem/85/C)|Codeforces||Yandex.Algorithm 2011 Round 1|8|\n|<ul><li>- [ ] Done</li></ul>|110|[Bombing](http://codeforces.com/problemset/problem/50/D)|Codeforces||Codeforces Beta Round #47|8|\n|<ul><li>- [ ] Done</li></ul>|111|[Bath Queue](http://codeforces.com/problemset/problem/28/C)|Codeforces||Codeforces Beta Round #28 (Codeforces format)|8|\n|<ul><li>- [ ] Done</li></ul>|112|[Tickets](http://codeforces.com/problemset/problem/26/D)|Codeforces||Codeforces Beta Round #26 (Codeforces format)|8|\n|<ul><li>- [ ] Done</li></ul>|113|[Broken robot](http://codeforces.com/problemset/problem/24/D)|Codeforces||Codeforces Beta Round #24|8|\n|<ul><li>- [ ] Done</li></ul>|114|[World of Darkraft - 2](http://codeforces.com/problemset/problem/464/D)|Codeforces||Codeforces Round #265 (Div. 1)|8|\n|<ul><li>- [ ] Done</li></ul>|115|[Startup Funding](http://codeforces.com/problemset/problem/633/E)|Codeforces||Manthan, Codefest 16|8|\n|<ul><li>- [ ] Done</li></ul>|116|[Intergalaxy Trips](http://codeforces.com/problemset/problem/605/E)|Codeforces||Codeforces Round #335 (Div. 1)|8|\n|<ul><li>- [ ] Done</li></ul>|117|[Wilbur and Trees](http://codeforces.com/problemset/problem/596/D)|Codeforces||Codeforces Round #331 (Div. 2)|8|\n|<ul><li>- [ ] Done</li></ul>|118|[Inversions problem](http://codeforces.com/problemset/problem/513/G2)|Codeforces||Rockethon 2015|8|\n|<ul><li>- [ ] Done</li></ul>|119|[Helping People](http://codeforces.com/problemset/problem/494/C)|Codeforces||Codeforces Round #282 (Div. 1) & Codeforces Round #282 (Div. 2)|8|\n|<ul><li>- [ ] Done</li></ul>|120|[Game with Strings](http://codeforces.com/problemset/problem/482/C)|Codeforces||Codeforces Round #275 (Div. 1) & Codeforces Round #275 (Div. 2)|8|\n|<ul><li>- [ ] Done</li></ul>|121|[Ghd](http://codeforces.com/problemset/problem/364/D)|Codeforces||Codeforces Round #213 (Div. 1)|8|\n|<ul><li>- [ ] Done</li></ul>|122|[Expecting Trouble](http://codeforces.com/problemset/problem/345/A)|Codeforces||Friday the 13th, Programmers Day|8|\n|<ul><li>- [ ] Done</li></ul>|123|[Little Elephant and Broken Sorting](http://codeforces.com/problemset/problem/258/D)|Codeforces||Codeforces Round #157 (Div. 1)|8|\n|<ul><li>- [ ] Done</li></ul>|124|[SPAM! (or not)](https://uva.onlinejudge.org/index.php?option=onlinejudge&page=show_problem&problem=2666)|UVA|||8|\n|<ul><li>- [ ] Done</li></ul>|125|[Fixing the Bugs](https://uva.onlinejudge.org/index.php?option=onlinejudge&page=show_problem&problem=2596)|UVA|||8|\n|<ul><li>- [ ] Done</li></ul>|126|[Destiny](http://codeforces.com/problemset/problem/840/D)|Codeforces||Codeforces Round #429 (Div. 1)|8|\n|<ul><li>- [ ] Done</li></ul>|127|[Willem, Chtholly and Seniorious](http://codeforces.com/problemset/problem/896/C)|Codeforces||Codeforces Round #449 (Div. 1) & Codeforces Round #449 (Div. 2)|8|\n|<ul><li>- [ ] Done</li></ul>|128|[Inversions After Shuffle](http://codeforces.com/problemset/problem/749/E)|Codeforces||Codeforces Round #388 (Div. 2)|8|\n|<ul><li>- [ ] Done</li></ul>|129|[Eyes Closed](http://codeforces.com/problemset/problem/895/E)|Codeforces||Codeforces Round #448 (Div. 2)|8|\n|<ul><li>- [ ] Done</li></ul>|130|[Memory and Casinos](http://codeforces.com/problemset/problem/712/E)|Codeforces||Codeforces Round #370 (Div. 2)|8|\n|<ul><li>- [ ] Done</li></ul>|131|[Piglet's Birthday](http://codeforces.com/problemset/problem/248/E)|Codeforces||Codeforces Round #152 (Div. 2) & Codeforces Round #152 (Div. 1)|9|\n|<ul><li>- [ ] Done</li></ul>|132|[T-shirt](http://codeforces.com/problemset/problem/183/D)|Codeforces||Croc Champ 2012 - Final|9|\n|<ul><li>- [ ] Done</li></ul>|133|[Plane of Tanks: Duel](http://codeforces.com/problemset/problem/175/D)|Codeforces||Codeforces Round #115|9|\n|<ul><li>- [ ] Done</li></ul>|134|[Maze](http://codeforces.com/problemset/problem/123/E)|Codeforces||Codeforces Beta Round #92 (Div. 1 Only)|9|\n|<ul><li>- [ ] Done</li></ul>|135|[Museum](http://codeforces.com/problemset/problem/113/D)|Codeforces||Codeforces Beta Round #86 (Div. 1 Only)|9|\n|<ul><li>- [ ] Done</li></ul>|136|[Half-decay tree](http://codeforces.com/problemset/problem/68/D)|Codeforces||Codeforces Beta Round #62|9|\n|<ul><li>- [ ] Done</li></ul>|137|[NestedRandomness](http://community.topcoder.com/stat?c=problem_statement&pm=3510)|TopCoder||TCCC05 Qual 5 - Div1 hard] (6527)|9|\n|<ul><li>- [ ] Done</li></ul>|138|[World of Darkraft](http://codeforces.com/problemset/problem/138/D)|Codeforces||Codeforces Beta Round #99 (Div. 1)|9|\n|<ul><li>- [ ] Done</li></ul>|139|[Gambling Nim](http://codeforces.com/problemset/problem/662/A)|Codeforces||CROC 2016 - Final Round [Private, For Onsite Finalists Only]|9|\n|<ul><li>- [ ] Done</li></ul>|140|[Birthday](http://codeforces.com/problemset/problem/623/D)|Codeforces||AIM Tech Round (Div. 1)|9|\n|<ul><li>- [ ] Done</li></ul>|141|[Randomizer](http://codeforces.com/problemset/problem/559/D)|Codeforces||Codeforces Round #313 (Div. 1)|9|\n|<ul><li>- [ ] Done</li></ul>|142|[Ksusha and Square](http://codeforces.com/problemset/problem/293/D)|Codeforces||Croc Champ 2013 - Round 2|9|\n|<ul><li>- [ ] Done</li></ul>|143|[Google Code Jam](http://codeforces.com/problemset/problem/277/D)|Codeforces||Codeforces Round #170 (Div. 1)|9|\n|<ul><li>- [ ] Done</li></ul>|144|[Darts](http://codeforces.com/problemset/problem/107/E)|Codeforces||Codeforces Beta Round #83 (Div. 1 Only)|10|\n|<ul><li>- [ ] Done</li></ul>|145|[Help Shrek and Donkey](http://codeforces.com/problemset/problem/98/E)|Codeforces||Codeforces Beta Round #78 (Div. 1 Only)|10|\n|<ul><li>- [ ] Done</li></ul>|146|[Help King](http://codeforces.com/problemset/problem/98/B)|Codeforces||Codeforces Beta Round #78 (Div. 1 Only) & Codeforces Beta Round #78 (Div. 2 Only)|10|\n|<ul><li>- [ ] Done</li></ul>|147|[Rubik's Cube: 0-1 Version](http://poj.org/problem?id=3701)|PKU|||10|\n|<ul><li>- [ ] Done</li></ul>|148|[Combining Slimes](http://codeforces.com/problemset/problem/618/G)|Codeforces||Wunder Fund Round 2016 (Div. 1 + Div. 2 combined)|10|\n|<ul><li>- [ ] Done</li></ul>|149|[Kyoya and Train](http://codeforces.com/problemset/problem/553/E)|Codeforces||Codeforces Round #309 (Div. 1)|10|\n|<ul><li>- [ ] Done</li></ul>|150|[Bingo!](http://codeforces.com/problemset/problem/457/D)|Codeforces||MemSQL Start[c]UP 2.0 - Round 2|10|\n|<ul><li>- [ ] Done</li></ul>|151|[DZY Loves Games](http://codeforces.com/problemset/problem/446/D)|Codeforces||Codeforces Round #255 (Div. 1)|10|\n|<ul><li>- [ ] Done</li></ul>|152|[Colored Jenga](http://codeforces.com/problemset/problem/424/E)|Codeforces||Codeforces Round #242 (Div. 2)|10|\n|<ul><li>- [ ] Done</li></ul>|153|[Counting Skyscrapers](http://codeforces.com/problemset/problem/335/E)|Codeforces||MemSQL start[c]up Round 2 - online version|10|\n"
  },
  {
    "path": "categories/026. two_pointers/README.md",
    "content": "# 026. two_pointers\n\n\n| Checkbox | ID | Problem Name|Online Judge|Contest|Difficulty Level|\n|:---:|:---:|:---:|:---:|:---:|:---:|\n|<ul><li>- [ ] Done</li></ul>|1|[Roommate Agreement](http://www.spoj.com/problems/CRAN02/)|SPOJ||1|\n|<ul><li>- [ ] Done</li></ul>|2|[Queries about less or equal elements](http://codeforces.com/problemset/problem/600/B)|Codeforces|Educational Codeforces Round 2|1|\n|<ul><li>- [ ] Done</li></ul>|3|[Kefa and Company](http://codeforces.com/problemset/problem/580/B)|Codeforces|Codeforces Round #321 (Div. 2)|1|\n|<ul><li>- [ ] Done</li></ul>|4|[BerSU Ball](http://codeforces.com/problemset/problem/489/B)|Codeforces|Codeforces Round #277.5 (Div. 2)|1|\n|<ul><li>- [ ] Done</li></ul>|5|[Number of Ways](http://codeforces.com/problemset/problem/466/C)|Codeforces|Codeforces Round #266 (Div. 2)|1|\n|<ul><li>- [ ] Done</li></ul>|6|[Sereja and Dima](http://codeforces.com/problemset/problem/381/A)|Codeforces|Codeforces Round #223 (Div. 2)|1|\n|<ul><li>- [ ] Done</li></ul>|7|[Books](http://codeforces.com/problemset/problem/279/B)|Codeforces|Codeforces Round #171 (Div. 2)|1|\n|<ul><li>- [ ] Done</li></ul>|8|[Complete the Word](http://codeforces.com/problemset/problem/716/B)|Codeforces|Codeforces Round #372 (Div. 2)|1|\n|<ul><li>- [ ] Done</li></ul>|9|[Points on Line](http://codeforces.com/problemset/problem/251/A)|Codeforces|Codeforces Round #153 (Div. 1) & Codeforces Round #153 (Div. 2)|2|\n|<ul><li>- [ ] Done</li></ul>|10|[Another Problem on Strings](http://codeforces.com/problemset/problem/165/C)|Codeforces|Codeforces Round #112 (Div. 2)|2|\n|<ul><li>- [ ] Done</li></ul>|11|[Alice, Bob and Chocolate](http://codeforces.com/problemset/problem/6/C)|Codeforces|Codeforces Beta Round #6 (Div. 2 Only)|2|\n|<ul><li>- [ ] Done</li></ul>|12|[Audition](http://www.spoj.com/problems/CRAN04/)|SPOJ||2|\n|<ul><li>- [ ] Done</li></ul>|13|[Approximating a Constant Range](http://codeforces.com/problemset/problem/602/B)|Codeforces|Codeforces Round #333 (Div. 2)|2|\n|<ul><li>- [ ] Done</li></ul>|14|[Modulo Sum](http://codeforces.com/problemset/problem/577/B)|Codeforces|Codeforces Round #319 (Div. 2)|2|\n|<ul><li>- [ ] Done</li></ul>|15|[DZY Loves Sequences](http://codeforces.com/problemset/problem/446/A)|Codeforces|Codeforces Round #255 (Div. 1) & Codeforces Round #255 (Div. 2)|2|\n|<ul><li>- [ ] Done</li></ul>|16|[Checkposts](http://codeforces.com/problemset/problem/427/C)|Codeforces|Codeforces Round #244 (Div. 2)|2|\n|<ul><li>- [ ] Done</li></ul>|17|[George and Round](http://codeforces.com/problemset/problem/387/B)|Codeforces|Codeforces Round #227 (Div. 2)|2|\n|<ul><li>- [ ] Done</li></ul>|18|[Counting Kangaroos is Fun](http://codeforces.com/problemset/problem/372/A)|Codeforces|Codeforces Round #219 (Div. 1) & Codeforces Round #219 (Div. 2)|2|\n|<ul><li>- [ ] Done</li></ul>|19|[Strings of Power](http://codeforces.com/problemset/problem/318/B)|Codeforces|Codeforces Round #188 (Div. 2)|2|\n|<ul><li>- [ ] Done</li></ul>|20|[Escape from Stones](http://codeforces.com/problemset/problem/264/A)|Codeforces|Codeforces Round #162 (Div. 1) & Codeforces Round #162 (Div. 2)|2|\n|<ul><li>- [ ] Done</li></ul>|21|[Vasya and String](http://codeforces.com/problemset/problem/676/C)|Codeforces|Codeforces Round #354 (Div. 2)|2|\n|<ul><li>- [ ] Done</li></ul>|22|[Wrath](http://codeforces.com/problemset/problem/892/B)|Codeforces|Codeforces Round #446 (Div. 2)|2|\n|<ul><li>- [ ] Done</li></ul>|23|[Kirill And The Game](http://codeforces.com/problemset/problem/842/A)|Codeforces|Codeforces Round #430 (Div. 2)|2|\n|<ul><li>- [ ] Done</li></ul>|24|[Physics Practical](http://codeforces.com/problemset/problem/253/B)|Codeforces|Codeforces Round #154 (Div. 2)|3|\n|<ul><li>- [ ] Done</li></ul>|25|[To Add or Not to Add](http://codeforces.com/problemset/problem/231/C)|Codeforces|Codeforces Round #143 (Div. 2)|3|\n|<ul><li>- [ ] Done</li></ul>|26|[Array](http://codeforces.com/problemset/problem/224/B)|Codeforces|Codeforces Round #138 (Div. 2)|3|\n|<ul><li>- [ ] Done</li></ul>|27|[Dress'em in Vests!](http://codeforces.com/problemset/problem/161/A)|Codeforces|VK Cup 2012 Round 1|3|\n|<ul><li>- [ ] Done</li></ul>|28|[Stripe](http://codeforces.com/problemset/problem/18/C)|Codeforces|Codeforces Beta Round #18 (Div. 2 Only)|3|\n|<ul><li>- [ ] Done</li></ul>|29|[Hard Process](http://codeforces.com/problemset/problem/660/C)|Codeforces|Educational Codeforces Round 11|3|\n|<ul><li>- [ ] Done</li></ul>|30|[A and B and Interesting Substrings](http://codeforces.com/problemset/problem/519/D)|Codeforces|Codeforces Round #294 (Div. 2)|3|\n|<ul><li>- [ ] Done</li></ul>|31|[Mr. Kitayuta, the Treasure Hunter](http://codeforces.com/problemset/problem/505/C)|Codeforces|Codeforces Round #286 (Div. 2) & Codeforces Round #286 (Div. 1)|3|\n|<ul><li>- [ ] Done</li></ul>|32|[Vasya and Basketball](http://codeforces.com/problemset/problem/493/C)|Codeforces|Codeforces Round #281 (Div. 2)|3|\n|<ul><li>- [ ] Done</li></ul>|33|[Maximum Value](http://codeforces.com/problemset/problem/484/B)|Codeforces|Codeforces Round #276 (Div. 1) & Codeforces Round #276 (Div. 2)|3|\n|<ul><li>- [ ] Done</li></ul>|34|[Guess a number!](http://codeforces.com/problemset/problem/416/A)|Codeforces|Codeforces Round #241 (Div. 2)|3|\n|<ul><li>- [ ] Done</li></ul>|35|[Eugeny and Play List](http://codeforces.com/problemset/problem/302/B)|Codeforces|Codeforces Round #182 (Div. 2)|3|\n|<ul><li>- [ ] Done</li></ul>|36|[Ladder](http://codeforces.com/problemset/problem/279/C)|Codeforces|Codeforces Round #171 (Div. 2)|3|\n|<ul><li>- [ ] Done</li></ul>|37|[Primes on Interval](http://codeforces.com/problemset/problem/237/C)|Codeforces|Codeforces Round #147 (Div. 2)|3|\n|<ul><li>- [ ] Done</li></ul>|38|[Powerful array](http://codeforces.com/problemset/problem/86/D)|Codeforces|Yandex.Algorithm 2011 Round 2|3|\n|<ul><li>- [ ] Done</li></ul>|39|[Alyona and Spreadsheet](http://codeforces.com/problemset/problem/777/C)|Codeforces|Codeforces Round #401 (Div. 2)|3|\n|<ul><li>- [ ] Done</li></ul>|40|[An impassioned circulation of affection](http://codeforces.com/problemset/problem/814/C)|Codeforces|Codeforces Round #418 (Div. 2)|3|\n|<ul><li>- [ ] Done</li></ul>|41|[Voting](http://codeforces.com/problemset/problem/749/C)|Codeforces|Codeforces Round #388 (Div. 2)|3|\n|<ul><li>- [ ] Done</li></ul>|42|[Shifts](http://codeforces.com/problemset/problem/229/A)|Codeforces|Codeforces Round #142 (Div. 1) & Codeforces Round #142 (Div. 2)|4|\n|<ul><li>- [ ] Done</li></ul>|43|[Where Are My Flakes?](http://codeforces.com/problemset/problem/60/A)|Codeforces|Codeforces Beta Round #56|4|\n|<ul><li>- [ ] Done</li></ul>|44|[Image Preview](http://codeforces.com/problemset/problem/650/B)|Codeforces|Codeforces Round #345 (Div. 1) & Codeforces Round #345 (Div. 2)|4|\n|<ul><li>- [ ] Done</li></ul>|45|[Processing Queries](http://codeforces.com/problemset/problem/644/B)|Codeforces|CROC 2016 - Qualification|4|\n|<ul><li>- [ ] Done</li></ul>|46|[Longest k-Good Segment](http://codeforces.com/problemset/problem/616/D)|Codeforces|Educational Codeforces Round 5|4|\n|<ul><li>- [ ] Done</li></ul>|47|[Devu and his Brother](http://codeforces.com/problemset/problem/439/D)|Codeforces|Codeforces Round #251 (Div. 2)|4|\n|<ul><li>- [ ] Done</li></ul>|48|[Prefixes and Suffixes](http://codeforces.com/problemset/problem/432/D)|Codeforces|Codeforces Round #246 (Div. 2)|4|\n|<ul><li>- [ ] Done</li></ul>|49|[Balls Game](http://codeforces.com/problemset/problem/430/B)|Codeforces|Codeforces Round #245 (Div. 2)|4|\n|<ul><li>- [ ] Done</li></ul>|50|[Multitasking](http://codeforces.com/problemset/problem/384/B)|Codeforces|Codeforces Round #225 (Div. 2)|4|\n|<ul><li>- [ ] Done</li></ul>|51|[Pair of Numbers](http://codeforces.com/problemset/problem/359/D)|Codeforces|Codeforces Round #209 (Div. 2)|4|\n|<ul><li>- [ ] Done</li></ul>|52|[Almost Arithmetical Progression](http://codeforces.com/problemset/problem/255/C)|Codeforces|Codeforces Round #156 (Div. 2) & Codeforces Round #156 (Div. 1)|4|\n|<ul><li>- [ ] Done</li></ul>|53|[Pointers](http://acm.sgu.ru/problem.php?contest=0&problem=359)|SGU||4|\n|<ul><li>- [ ] Done</li></ul>|54|[XK Segments](http://codeforces.com/problemset/problem/895/B)|Codeforces|Codeforces Round #448 (Div. 2)|4|\n|<ul><li>- [ ] Done</li></ul>|55|[Olympiad](http://codeforces.com/problemset/problem/222/D)|Codeforces|Codeforces Round #137 (Div. 2)|5|\n|<ul><li>- [ ] Done</li></ul>|56|[Two Paths](http://codeforces.com/problemset/problem/14/D)|Codeforces|Codeforces Beta Round #14 (Div. 2)|5|\n|<ul><li>- [ ] Done</li></ul>|57|[Exposition](http://codeforces.com/problemset/problem/6/E)|Codeforces|Codeforces Beta Round #6 (Div. 2 Only)|5|\n|<ul><li>- [ ] Done</li></ul>|58|[Foe Pairs](http://codeforces.com/problemset/problem/652/C)|Codeforces|Educational Codeforces Round 10|5|\n|<ul><li>- [ ] Done</li></ul>|59|[Enduring Exodus](http://codeforces.com/problemset/problem/645/C)|Codeforces|CROC 2016 - Elimination Round|5|\n|<ul><li>- [ ] Done</li></ul>|60|[Skills](http://codeforces.com/problemset/problem/613/B)|Codeforces|Codeforces Round #339 (Div. 1) & Codeforces Round #339 (Div. 2)|5|\n|<ul><li>- [ ] Done</li></ul>|61|[Correcting Mistakes](http://codeforces.com/problemset/problem/533/E)|Codeforces|VK Cup 2015 - Round 2 (unofficial online mirror, Div. 1 only)|5|\n|<ul><li>- [ ] Done</li></ul>|62|[R2D2 and Droid Army](http://codeforces.com/problemset/problem/514/D)|Codeforces|Codeforces Round #291 (Div. 2)|5|\n|<ul><li>- [ ] Done</li></ul>|63|[Strip](http://codeforces.com/problemset/problem/487/B)|Codeforces|Codeforces Round #278 (Div. 1) & Codeforces Round #278 (Div. 2)|5|\n|<ul><li>- [ ] Done</li></ul>|64|[Read Time](http://codeforces.com/problemset/problem/343/C)|Codeforces|Codeforces Round #200 (Div. 1) & Codeforces Round #200 (Div. 2)|5|\n|<ul><li>- [ ] Done</li></ul>|65|[Nearest Fraction](http://codeforces.com/problemset/problem/281/B)|Codeforces|Codeforces Round #172 (Div. 2)|5|\n|<ul><li>- [ ] Done</li></ul>|66|[Maximum Xor Secondary](http://codeforces.com/problemset/problem/280/B)|Codeforces|Codeforces Round #172 (Div. 1) & Codeforces Round #172 (Div. 2)|5|\n|<ul><li>- [ ] Done</li></ul>|67|[Jury Meeting](http://codeforces.com/problemset/problem/853/B)|Codeforces|Codeforces Round #433 (Div. 1, based on Olympiad of Metropolises) & Codeforces Round #433 (Div. 2, based on Olympiad of Metropolises)|5|\n|<ul><li>- [ ] Done</li></ul>|68|[The Bakery](http://codeforces.com/problemset/problem/833/B)|Codeforces|Codeforces Round #426 (Div. 1) & Codeforces Round #426 (Div. 2)|5|\n|<ul><li>- [ ] Done</li></ul>|69|[Cartons of milk](http://codeforces.com/problemset/problem/767/D)|Codeforces|Codeforces Round #398 (Div. 2)|5|\n|<ul><li>- [ ] Done</li></ul>|70|[Towers](http://codeforces.com/problemset/problem/229/D)|Codeforces|Codeforces Round #142 (Div. 1)|6|\n|<ul><li>- [ ] Done</li></ul>|71|[Non-Secret Cypher](http://codeforces.com/problemset/problem/190/D)|Codeforces|Codeforces Round #120 (Div. 2)|6|\n|<ul><li>- [ ] Done</li></ul>|72|[Beaver](http://codeforces.com/problemset/problem/79/C)|Codeforces|Codeforces Beta Round #71|6|\n|<ul><li>- [ ] Done</li></ul>|73|[Hamsters and Tigers](http://codeforces.com/problemset/problem/46/C)|Codeforces|School Personal Contest #2 (Winter Computer School 2010/11) - Codeforces Beta Round #43 (ACM-ICPC Rules)|6|\n|<ul><li>- [ ] Done</li></ul>|74|[Gadgets for dollars and pounds](http://codeforces.com/problemset/problem/609/D)|Codeforces|Educational Codeforces Round 3|6|\n|<ul><li>- [ ] Done</li></ul>|75|[Segment Tree](http://www.spoj.com/problems/SEGTREE/)|SPOJ||6|\n|<ul><li>- [ ] Done</li></ul>|76|[Rooter's Song](http://codeforces.com/problemset/problem/848/B)|Codeforces|Codeforces Round #431 (Div. 1) & Codeforces Round #431 (Div. 2)|6|\n|<ul><li>- [ ] Done</li></ul>|77|[Table with Letters - 2](http://codeforces.com/problemset/problem/253/D)|Codeforces|Codeforces Round #154 (Div. 2)|7|\n|<ul><li>- [ ] Done</li></ul>|78|[Little Elephant and Inversions](http://codeforces.com/problemset/problem/220/E)|Codeforces|Codeforces Round #136 (Div. 1)|7|\n|<ul><li>- [ ] Done</li></ul>|79|[Spider's Web](http://codeforces.com/problemset/problem/216/D)|Codeforces|Codeforces Round #133 (Div. 2)|7|\n|<ul><li>- [ ] Done</li></ul>|80|[Ski Base](http://codeforces.com/problemset/problem/91/C)|Codeforces|Codeforces Beta Round #75 (Div. 1 Only) & Codeforces Beta Round #75 (Div. 2 Only)|7|\n|<ul><li>- [ ] Done</li></ul>|81|[Professor GukiZ and Two Arrays](http://codeforces.com/problemset/problem/620/D)|Codeforces|Educational Codeforces Round 6|7|\n|<ul><li>- [ ] Done</li></ul>|82|[Vika and Segments](http://codeforces.com/problemset/problem/610/D)|Codeforces|Codeforces Round #337 (Div. 2)|7|\n|<ul><li>- [ ] Done</li></ul>|83|[Edo and Magnets](http://codeforces.com/problemset/problem/594/C)|Codeforces|Codeforces Round #330 (Div. 1) & Codeforces Round #330 (Div. 2)|7|\n|<ul><li>- [ ] Done</li></ul>|84|[Social Network](http://codeforces.com/problemset/problem/524/D)|Codeforces|VK Cup 2015 - Round 1|7|\n|<ul><li>- [ ] Done</li></ul>|85|[Name That Tune](http://codeforces.com/problemset/problem/498/B)|Codeforces|Codeforces Round #284 (Div. 1) & Codeforces Round #284 (Div. 2)|7|\n|<ul><li>- [ ] Done</li></ul>|86|[Bug in Code](http://codeforces.com/problemset/problem/420/C)|Codeforces|Coder-Strike 2014 - Finals (online edition, Div. 2) & Coder-Strike 2014 - Finals (online edition, Div. 1) & Coder-Strike 2014 - Finals (online edition, Div. 2) & Coder-Strike 2014 - Finals (online edition, Div. 1)|7|\n|<ul><li>- [ ] Done</li></ul>|87|[Genetic Engineering](http://codeforces.com/problemset/problem/391/A)|Codeforces|Rockethon 2014|7|\n|<ul><li>- [ ] Done</li></ul>|88|[Subway Innovation](http://codeforces.com/problemset/problem/371/E)|Codeforces|Codeforces Round #218 (Div. 2)|7|\n|<ul><li>- [ ] Done</li></ul>|89|[Dima and Trap Graph](http://codeforces.com/problemset/problem/366/D)|Codeforces|Codeforces Round #214 (Div. 2)|7|\n|<ul><li>- [ ] Done</li></ul>|90|[Building Bridge](http://codeforces.com/problemset/problem/250/D)|Codeforces|CROC-MBTU 2012, Final Round (Online version, Div. 2)|7|\n|<ul><li>- [ ] Done</li></ul>|91|[Cubes](http://codeforces.com/problemset/problem/180/E)|Codeforces|Codeforces Round #116 (Div. 2, ACM-ICPC Rules)|7|\n|<ul><li>- [ ] Done</li></ul>|92|[Nanami's Digital Board](http://codeforces.com/problemset/problem/433/D)|Codeforces|Codeforces Round #248 (Div. 2) & Codeforces Round #248 (Div. 1)|7|\n|<ul><li>- [ ] Done</li></ul>|93|[Bamboo Partition](http://codeforces.com/problemset/problem/830/C)|Codeforces|Codeforces Round #424 (Div. 1, rated, based on VK Cup Finals) & Codeforces Round #424 (Div. 2, rated, based on VK Cup Finals)|7|\n|<ul><li>- [ ] Done</li></ul>|94|[Mad Joe](http://codeforces.com/problemset/problem/250/E)|Codeforces|CROC-MBTU 2012, Final Round (Online version, Div. 2)|8|\n|<ul><li>- [ ] Done</li></ul>|95|[Little Elephant and Strings](http://codeforces.com/problemset/problem/204/E)|Codeforces|Codeforces Round #129 (Div. 1)|8|\n|<ul><li>- [ ] Done</li></ul>|96|[Ancient Berland Hieroglyphs](http://codeforces.com/problemset/problem/164/B)|Codeforces|VK Cup 2012 Round 3|8|\n|<ul><li>- [ ] Done</li></ul>|97|[Present to Mom](http://codeforces.com/problemset/problem/131/F)|Codeforces|Codeforces Beta Round #95 (Div. 2)|8|\n|<ul><li>- [ ] Done</li></ul>|98|[Lucky Tickets](http://codeforces.com/problemset/problem/70/C)|Codeforces|Codeforces Beta Round #64|8|\n|<ul><li>- [ ] Done</li></ul>|99|[Very simple problem](http://codeforces.com/problemset/problem/55/E)|Codeforces|Codeforces Beta Round #51|8|\n|<ul><li>- [ ] Done</li></ul>|100|[Startup Funding](http://codeforces.com/problemset/problem/633/E)|Codeforces|Manthan, Codefest 16|8|\n|<ul><li>- [ ] Done</li></ul>|101|[Double Knapsack](http://codeforces.com/problemset/problem/618/F)|Codeforces|Wunder Fund Round 2016 (Div. 1 + Div. 2 combined)|8|\n|<ul><li>- [ ] Done</li></ul>|102|[Zublicanes and Mumocrates](http://codeforces.com/problemset/problem/581/F)|Codeforces|Codeforces Round #322 (Div. 2)|8|\n|<ul><li>- [ ] Done</li></ul>|103|[Drazil and Morning Exercise](http://codeforces.com/problemset/problem/516/D)|Codeforces|Codeforces Round #292 (Div. 1)|8|\n|<ul><li>- [ ] Done</li></ul>|104|[DZY Loves Strings](http://codeforces.com/problemset/problem/444/D)|Codeforces|Codeforces Round #254 (Div. 1)|8|\n|<ul><li>- [ ] Done</li></ul>|105|[Mashmokh and Water Tanks](http://codeforces.com/problemset/problem/414/D)|Codeforces|Codeforces Round #240 (Div. 1)|8|\n|<ul><li>- [ ] Done</li></ul>|106|[Diverse Substrings](http://codeforces.com/problemset/problem/386/C)|Codeforces|Testing Round #9|8|\n|<ul><li>- [ ] Done</li></ul>|107|[Volcanoes](http://codeforces.com/problemset/problem/383/B)|Codeforces|Codeforces Round #225 (Div. 1) & Codeforces Round #225 (Div. 2)|8|\n|<ul><li>- [ ] Done</li></ul>|108|[Choosing Subtree is Fun](http://codeforces.com/problemset/problem/372/D)|Codeforces|Codeforces Round #219 (Div. 1)|8|\n|<ul><li>- [ ] Done</li></ul>|109|[Sereja and Straight Lines](http://codeforces.com/problemset/problem/314/D)|Codeforces|Codeforces Round #187 (Div. 1)|8|\n|<ul><li>- [ ] Done</li></ul>|110|[Morning run](http://codeforces.com/problemset/problem/309/A)|Codeforces|Croc Champ 2013 - Finals (online version, Div. 1)|8|\n|<ul><li>- [ ] Done</li></ul>|111|[Alyona and Triangles](http://codeforces.com/problemset/problem/682/E)|Codeforces|Codeforces Round #358 (Div. 2)|8|\n|<ul><li>- [ ] Done</li></ul>|112|[Shoe Store](http://codeforces.com/problemset/problem/166/D)|Codeforces|Codeforces Round #113 (Div. 2)|9|\n|<ul><li>- [ ] Done</li></ul>|113|[Lucky Segments](http://codeforces.com/problemset/problem/121/D)|Codeforces|Codeforces Beta Round #91 (Div. 1 Only)|9|\n|<ul><li>- [ ] Done</li></ul>|114|[Archer's Shot](http://codeforces.com/problemset/problem/78/D)|Codeforces|Codeforces Beta Round #70 (Div. 2)|9|\n|<ul><li>- [ ] Done</li></ul>|115|[Mice](http://codeforces.com/problemset/problem/76/B)|Codeforces|All-Ukrainian School Olympiad in Informatics|9|\n|<ul><li>- [ ] Done</li></ul>|116|[Race](http://codeforces.com/problemset/problem/43/E)|Codeforces|Codeforces Beta Round #42 (Div. 2)|9|\n|<ul><li>- [ ] Done</li></ul>|117|[Context Advertising](http://codeforces.com/problemset/problem/309/B)|Codeforces|Croc Champ 2013 - Finals (online version, Div. 1)|9|\n|<ul><li>- [ ] Done</li></ul>|118|[Ksusha and Square](http://codeforces.com/problemset/problem/293/D)|Codeforces|Croc Champ 2013 - Round 2|9|\n|<ul><li>- [ ] Done</li></ul>|119|[Colorful Stones](http://codeforces.com/problemset/problem/264/D)|Codeforces|Codeforces Round #162 (Div. 1)|9|\n|<ul><li>- [ ] Done</li></ul>|120|[Maxim and Calculator](http://codeforces.com/problemset/problem/261/E)|Codeforces|Codeforces Round #160 (Div. 1)|9|\n|<ul><li>- [ ] Done</li></ul>|121|[Transportation](http://codeforces.com/problemset/problem/203/E)|Codeforces|Codeforces Round #128 (Div. 2)|9|\n|<ul><li>- [ ] Done</li></ul>|122|[Cubes](http://codeforces.com/problemset/problem/243/D)|Codeforces|Codeforces Round #150 (Div. 1)|10|\n|<ul><li>- [ ] Done</li></ul>|123|[Hellish Constraints](http://codeforces.com/problemset/problem/138/E)|Codeforces|Codeforces Beta Round #99 (Div. 1)|10|\n|<ul><li>- [ ] Done</li></ul>|124|[Orchestra](http://codeforces.com/problemset/problem/627/E)|Codeforces|8VC Venture Cup 2016 - Final Round|10|\n|<ul><li>- [ ] Done</li></ul>|125|[New Year and Cake](http://codeforces.com/problemset/problem/611/G)|Codeforces|Good Bye 2015|10|\n|<ul><li>- [ ] Done</li></ul>|126|[BCPC](http://codeforces.com/problemset/problem/592/E)|Codeforces|Codeforces Round #328 (Div. 2)|10|\n|<ul><li>- [ ] Done</li></ul>|127|[Empty Rectangles](http://codeforces.com/problemset/problem/364/E)|Codeforces|Codeforces Round #213 (Div. 1)|10|\n|<ul><li>- [ ] Done</li></ul>|128|[Galaxy Union](http://codeforces.com/problemset/problem/48/G)|Codeforces|School Personal Contest #3 (Winter Computer School 2010/11) - Codeforces Beta Round #45 (ACM-ICPC Rules)|10|\n"
  },
  {
    "path": "categories/027. Codeforces_Div._2_-_F_Problems/README.md",
    "content": "# 027. Codeforces_Div._2_-_F_Problems\n\n\n| Checkbox | ID | Problem Name|Online Judge|Contest|Difficulty Level|\n|:---:|:---:|:---:|:---:|:---:|:---:|\n|<ul><li>- [ ] Done</li></ul>|1|[Ant colony](http://codeforces.com/problemset/problem/474/F)|Codeforces|Codeforces Round #271 (Div. 2)|4|\n|<ul><li>- [ ] Done</li></ul>|2|[Video Cards](http://codeforces.com/problemset/problem/731/F)|Codeforces|Codeforces Round #376 (Div. 2)|5|\n|<ul><li>- [ ] Done</li></ul>|3|[SUM and REPLACE](http://codeforces.com/problemset/problem/920/F)|Codeforces|Educational Codeforces Round 37 (Rated for Div. 2)|5|\n|<ul><li>- [ ] Done</li></ul>|4|[Mathematical Analysis Rocks!](http://codeforces.com/problemset/problem/180/F)|Codeforces|Codeforces Round #116 (Div. 2, ACM-ICPC Rules)|6|\n|<ul><li>- [ ] Done</li></ul>|5|[Fence](http://codeforces.com/problemset/problem/234/F)|Codeforces|Codeforces Round #145 (Div. 2, ACM-ICPC Rules) & Codeforces Round #145 (Div. 1, ACM-ICPC Rules)|6|\n|<ul><li>- [ ] Done</li></ul>|6|[Special Matrices](http://codeforces.com/problemset/problem/489/F)|Codeforces|Codeforces Round #277.5 (Div. 2)|6|\n|<ul><li>- [ ] Done</li></ul>|7|[st-Spanning Tree](http://codeforces.com/problemset/problem/723/F)|Codeforces|Codeforces Round #375 (Div. 2)|6|\n|<ul><li>- [ ] Done</li></ul>|8|[Polycarp and Hay](http://codeforces.com/problemset/problem/659/F)|Codeforces|Codeforces Round #346 (Div. 2)|6|\n|<ul><li>- [ ] Done</li></ul>|9|[New Year Tree](http://codeforces.com/problemset/problem/379/F)|Codeforces|Good Bye 2013|6|\n|<ul><li>- [ ] Done</li></ul>|10|[A Heap of Heaps](http://codeforces.com/problemset/problem/538/F)|Codeforces|Codeforces Round #300|6|\n|<ul><li>- [ ] Done</li></ul>|11|[Group Projects](http://codeforces.com/problemset/problem/626/F)|Codeforces|8VC Venture Cup 2016 - Elimination Round|6|\n|<ul><li>- [ ] Done</li></ul>|12|[Treeland Tour](http://codeforces.com/problemset/problem/490/F)|Codeforces|Codeforces Round #279 (Div. 2)|7|\n|<ul><li>- [ ] Done</li></ul>|13|[Lizard Era: Beginning](http://codeforces.com/problemset/problem/585/D)|Codeforces|Codeforces Round #325 (Div. 1) & Codeforces Round #325 (Div. 2)|7|\n|<ul><li>- [ ] Done</li></ul>|14|[Drivers Dissatisfaction](http://codeforces.com/problemset/problem/733/F)|Codeforces|Codeforces Round #378 (Div. 2)|7|\n|<ul><li>- [ ] Done</li></ul>|15|[Tourist Reform](http://codeforces.com/problemset/problem/732/F)|Codeforces|Codeforces Round #377 (Div. 2)|7|\n|<ul><li>- [ ] Done</li></ul>|16|[Break Up](http://codeforces.com/problemset/problem/700/C)|Codeforces|Codeforces Round #364 (Div. 1) & Codeforces Round #364 (Div. 2)|7|\n|<ul><li>- [ ] Done</li></ul>|17|[Restore a Number](http://codeforces.com/problemset/problem/670/F)|Codeforces|Codeforces Round #350 (Div. 2)|7|\n|<ul><li>- [ ] Done</li></ul>|18|[Bacterial Melee](http://codeforces.com/problemset/problem/756/D)|Codeforces|8VC Venture Cup 2017 - Final Round|7|\n|<ul><li>- [ ] Done</li></ul>|19|[Barrels and boxes](http://codeforces.com/problemset/problem/768/F)|Codeforces|Divide by Zero 2017 and Codeforces Round #399 (Div. 1 + Div. 2, combined)|7|\n|<ul><li>- [ ] Done</li></ul>|20|[Peterson Polyglot](http://codeforces.com/problemset/problem/778/C)|Codeforces|Codeforces Round #402 (Div. 1) & Codeforces Round #402 (Div. 2)|7|\n|<ul><li>- [ ] Done</li></ul>|21|[Axel and Marston in Bitland](http://codeforces.com/problemset/problem/780/F)|Codeforces|?????????? 2017 - ????? (?????? ??? ??????-??????????)|7|\n|<ul><li>- [ ] Done</li></ul>|22|[Expected diameter of a tree](http://codeforces.com/problemset/problem/804/D)|Codeforces|Codeforces Round #411 (Div. 1) & Codeforces Round #411 (Div. 2)|7|\n|<ul><li>- [ ] Done</li></ul>|23|[Bamboo Partition](http://codeforces.com/problemset/problem/830/C)|Codeforces|Codeforces Round #424 (Div. 1, rated, based on VK Cup Finals) & Codeforces Round #424 (Div. 2, rated, based on VK Cup Finals)|7|\n|<ul><li>- [ ] Done</li></ul>|24|[Couple Cover](http://codeforces.com/problemset/problem/691/F)|Codeforces|Educational Codeforces Round 14|7|\n|<ul><li>- [ ] Done</li></ul>|25|[PolandBall and Gifts](http://codeforces.com/problemset/problem/755/F)|Codeforces|8VC Venture Cup 2017 - Elimination Round|7|\n|<ul><li>- [ ] Done</li></ul>|26|[Coprime Subsequences](http://codeforces.com/problemset/problem/803/F)|Codeforces|Educational Codeforces Round 20|7|\n|<ul><li>- [ ] Done</li></ul>|27|[MEX Queries](http://codeforces.com/problemset/problem/817/F)|Codeforces|Educational Codeforces Round 23|7|\n|<ul><li>- [ ] Done</li></ul>|28|[Random Query](http://codeforces.com/problemset/problem/846/F)|Codeforces|Educational Codeforces Round 28|7|\n|<ul><li>- [ ] Done</li></ul>|29|[Letters Removing](http://codeforces.com/problemset/problem/899/F)|Codeforces|Codeforces Round #452 (Div. 2)|7|\n|<ul><li>- [ ] Done</li></ul>|30|[New Year and Rainbow Roads](http://codeforces.com/problemset/problem/908/F)|Codeforces|Good Bye 2017|7|\n|<ul><li>- [ ] Done</li></ul>|31|[Present to Mom](http://codeforces.com/problemset/problem/131/F)|Codeforces|Codeforces Beta Round #95 (Div. 2)|8|\n|<ul><li>- [ ] Done</li></ul>|32|[Progress Monitoring](http://codeforces.com/problemset/problem/509/F)|Codeforces|Codeforces Round #289 (Div. 2, ACM ICPC Rules)|8|\n|<ul><li>- [ ] Done</li></ul>|33|[Zublicanes and Mumocrates](http://codeforces.com/problemset/problem/581/F)|Codeforces|Codeforces Round #322 (Div. 2)|8|\n|<ul><li>- [ ] Done</li></ul>|34|[LCS Again](http://codeforces.com/problemset/problem/578/D)|Codeforces|Codeforces Round #320 (Div. 1) [Bayan Thanks-Round] & Codeforces Round #320 (Div. 2) [Bayan Thanks-Round]|8|\n|<ul><li>- [ ] Done</li></ul>|35|[Mausoleum](http://codeforces.com/problemset/problem/567/F)|Codeforces|Codeforces Round #Pi (Div. 2)|8|\n|<ul><li>- [ ] Done</li></ul>|36|[Legen...](http://codeforces.com/problemset/problem/696/D)|Codeforces|Codeforces Round #362 (Div. 1) & Codeforces Round #362 (Div. 2)|8|\n|<ul><li>- [ ] Done</li></ul>|37|[Financiers Game](http://codeforces.com/problemset/problem/729/F)|Codeforces|Technocup 2017 - Elimination Round 2|8|\n|<ul><li>- [ ] Done</li></ul>|38|[Music in Car](http://codeforces.com/problemset/problem/746/F)|Codeforces|Codeforces Round #386 (Div. 2)|8|\n|<ul><li>- [ ] Done</li></ul>|39|[Santa Clauses and a Soccer Championship](http://codeforces.com/problemset/problem/748/F)|Codeforces|Technocup 2017 - Elimination Round 3|8|\n|<ul><li>- [ ] Done</li></ul>|40|[Team Rocket Rises Again](http://codeforces.com/problemset/problem/757/F)|Codeforces|Codecraft-17 and Codeforces Round #391 (Div. 1 + Div. 2, combined)|8|\n|<ul><li>- [ ] Done</li></ul>|41|[Geometrical Progression](http://codeforces.com/problemset/problem/758/F)|Codeforces|Codeforces Round #392 (Div. 2)|8|\n|<ul><li>- [ ] Done</li></ul>|42|[Souvenirs](http://codeforces.com/problemset/problem/765/F)|Codeforces|Codeforces Round #397 by Kaspersky Lab and Barcelona Bootcamp (Div. 1 + Div. 2 combined)|8|\n|<ul><li>- [ ] Done</li></ul>|43|[Leha and security system](http://codeforces.com/problemset/problem/794/F)|Codeforces|Tinkoff Challenge - Final Round (Codeforces Round #414, rated, Div. 1 + Div. 2)|8|\n|<ul><li>- [ ] Done</li></ul>|44|[Best Edge Weight](http://codeforces.com/problemset/problem/827/D)|Codeforces|Codeforces Round #423 (Div. 1, rated, based on VK Cup Finals) & Codeforces Round #423 (Div. 2, rated, based on VK Cup Finals)|8|\n|<ul><li>- [ ] Done</li></ul>|45|[Cities Excursions](http://codeforces.com/problemset/problem/864/F)|Codeforces|Codeforces Round #436 (Div. 2)|8|\n|<ul><li>- [ ] Done</li></ul>|46|[Restoring the Expression](http://codeforces.com/problemset/problem/898/F)|Codeforces|Codeforces Round #451 (Div. 2)|8|\n|<ul><li>- [ ] Done</li></ul>|47|[New Year and Cleaning](http://codeforces.com/problemset/problem/611/F)|Codeforces|Good Bye 2015|8|\n|<ul><li>- [ ] Done</li></ul>|48|[Double Knapsack](http://codeforces.com/problemset/problem/618/F)|Codeforces|Wunder Fund Round 2016 (Div. 1 + Div. 2 combined)|8|\n|<ul><li>- [ ] Done</li></ul>|49|[The Sum of the k-th Powers](http://codeforces.com/problemset/problem/622/F)|Codeforces|Educational Codeforces Round 7|8|\n|<ul><li>- [ ] Done</li></ul>|50|[The Chocolate Spree](http://codeforces.com/problemset/problem/633/F)|Codeforces|Manthan, Codefest 16|8|\n|<ul><li>- [ ] Done</li></ul>|51|[Magic Matrix](http://codeforces.com/problemset/problem/632/F)|Codeforces|Educational Codeforces Round 9|8|\n|<ul><li>- [ ] Done</li></ul>|52|[Cowslip Collections](http://codeforces.com/problemset/problem/645/F)|Codeforces|CROC 2016 - Elimination Round|8|\n|<ul><li>- [ ] Done</li></ul>|53|[Paper task](http://codeforces.com/problemset/problem/653/F)|Codeforces|IndiaHacks 2016 - Online Edition (Div. 1 + Div. 2)|8|\n|<ul><li>- [ ] Done</li></ul>|54|[Bear and Bowling 4](http://codeforces.com/problemset/problem/660/F)|Codeforces|Educational Codeforces Round 11|8|\n|<ul><li>- [ ] Done</li></ul>|55|[String Set Queries](http://codeforces.com/problemset/problem/710/F)|Codeforces|Educational Codeforces Round 16|8|\n|<ul><li>- [ ] Done</li></ul>|56|[Polycarp's problems](http://codeforces.com/problemset/problem/727/F)|Codeforces|Technocup 2017 - Elimination Round 1 (Unofficially Open for Everyone, Rated for Div. 2)|8|\n|<ul><li>- [ ] Done</li></ul>|57|[Card Game](http://codeforces.com/problemset/problem/808/F)|Codeforces|Educational Codeforces Round 21|8|\n|<ul><li>- [ ] Done</li></ul>|58|[Level Generation](http://codeforces.com/problemset/problem/818/F)|Codeforces|Educational Codeforces Round 24|8|\n|<ul><li>- [ ] Done</li></ul>|59|[String Compression](http://codeforces.com/problemset/problem/825/F)|Codeforces|Educational Codeforces Round 25|8|\n|<ul><li>- [ ] Done</li></ul>|60|[Prefix Sums](http://codeforces.com/problemset/problem/837/F)|Codeforces|Educational Codeforces Round 26|8|\n|<ul><li>- [ ] Done</li></ul>|61|[Wizard's Tour](http://codeforces.com/problemset/problem/858/F)|Codeforces|?????????? 2018 - ?????????? ????? 1|8|\n|<ul><li>- [ ] Done</li></ul>|62|[Almost Permutation](http://codeforces.com/problemset/problem/863/F)|Codeforces|Educational Codeforces Round 29|8|\n|<ul><li>- [ ] Done</li></ul>|63|[Yet Another Minimization Problem](http://codeforces.com/problemset/problem/868/F)|Codeforces|Codeforces Round #438 by Sberbank and Barcelona Bootcamp (Div. 1 + Div. 2 combined)|8|\n|<ul><li>- [ ] Done</li></ul>|64|[Forbidden Indices](http://codeforces.com/problemset/problem/873/F)|Codeforces|Educational Codeforces Round 30|8|\n|<ul><li>- [ ] Done</li></ul>|65|[Anti-Palindromize](http://codeforces.com/problemset/problem/884/F)|Codeforces|Educational Codeforces Round 31|8|\n|<ul><li>- [ ] Done</li></ul>|66|[Subtree Minimum Query](http://codeforces.com/problemset/problem/893/F)|Codeforces|Educational Codeforces Round 33 (Rated for Div. 2)|8|\n|<ul><li>- [ ] Done</li></ul>|67|[Tree Destruction](http://codeforces.com/problemset/problem/911/F)|Codeforces|Educational Codeforces Round 35 (Rated for Div. 2)|8|\n|<ul><li>- [ ] Done</li></ul>|68|[Divisibility](http://codeforces.com/problemset/problem/922/F)|Codeforces|Codeforces Round #461 (Div. 2)|8|\n|<ul><li>- [ ] Done</li></ul>|69|[Escape Through Leaf](http://codeforces.com/problemset/problem/932/F)|Codeforces|ICM Technex 2018 and Codeforces Round #463 (Div. 1 + Div. 2, combined)|8|\n|<ul><li>- [ ] Done</li></ul>|70|[Machine Learning](http://codeforces.com/problemset/problem/940/F)|Codeforces|Codeforces Round #466 (Div. 2)|8|\n|<ul><li>- [ ] Done</li></ul>|71|[Smart Boy](http://codeforces.com/problemset/problem/38/F)|Codeforces|School Personal Contest #1 (Winter Computer School 2010/11) - Codeforces Beta Round #38 (ACM-ICPC Rules)|9|\n|<ul><li>- [ ] Done</li></ul>|72|[New Year Snowflake](http://codeforces.com/problemset/problem/140/F)|Codeforces|Codeforces Round #100|9|\n|<ul><li>- [ ] Done</li></ul>|73|[Simplified Nonogram](http://codeforces.com/problemset/problem/534/F)|Codeforces|Codeforces Round #298 (Div. 2)|9|\n|<ul><li>- [ ] Done</li></ul>|74|[Pasha and Pipe](http://codeforces.com/problemset/problem/518/F)|Codeforces|Codeforces Round #293 (Div. 2)|9|\n|<ul><li>- [ ] Done</li></ul>|75|[Limak and Shooting Points](http://codeforces.com/problemset/problem/698/D)|Codeforces|Codeforces Round #363 (Div. 1) & Codeforces Round #363 (Div. 2)|9|\n|<ul><li>- [ ] Done</li></ul>|76|[Igor and Interesting Numbers](http://codeforces.com/problemset/problem/747/F)|Codeforces|Codeforces Round #387 (Div. 2)|9|\n|<ul><li>- [ ] Done</li></ul>|77|[Dasha and Photos](http://codeforces.com/problemset/problem/761/F)|Codeforces|Codeforces Round #394 (Div. 2)|9|\n|<ul><li>- [ ] Done</li></ul>|78|[Sherlock's bet to Moriarty](http://codeforces.com/problemset/problem/776/F)|Codeforces|ICM Technex 2017 and Codeforces Round #400 (Div. 1 + Div. 2, combined)|9|\n|<ul><li>- [ ] Done</li></ul>|79|[Perishable Roads](http://codeforces.com/problemset/problem/773/D)|Codeforces|VK Cup 2017 - Round 3|9|\n|<ul><li>- [ ] Done</li></ul>|80|[Roads in the Kingdom](http://codeforces.com/problemset/problem/835/F)|Codeforces|Codeforces Round #427 (Div. 2)|9|\n|<ul><li>- [ ] Done</li></ul>|81|[Madness](http://codeforces.com/problemset/problem/822/F)|Codeforces|Codeforces Round #422 (Div. 2)|9|\n|<ul><li>- [ ] Done</li></ul>|82|[Design Tutorial: Change the Goal](http://codeforces.com/problemset/problem/472/F)|Codeforces|Codeforces Round #270|9|\n|<ul><li>- [ ] Done</li></ul>|83|[New Year Shopping](http://codeforces.com/problemset/problem/500/F)|Codeforces|Good Bye 2014|9|\n|<ul><li>- [ ] Done</li></ul>|84|[Edge coloring of bipartite graph](http://codeforces.com/problemset/problem/600/F)|Codeforces|Educational Codeforces Round 2|9|\n|<ul><li>- [ ] Done</li></ul>|85|[Expensive Strings](http://codeforces.com/problemset/problem/616/F)|Codeforces|Educational Codeforces Round 5|9|\n|<ul><li>- [ ] Done</li></ul>|86|[Xors on Segments](http://codeforces.com/problemset/problem/620/F)|Codeforces|Educational Codeforces Round 6|9|\n|<ul><li>- [ ] Done</li></ul>|87|[Bear and Fair Set](http://codeforces.com/problemset/problem/628/F)|Codeforces|Educational Codeforces Round 8|9|\n|<ul><li>- [ ] Done</li></ul>|88|[Four Divisors](http://codeforces.com/problemset/problem/665/F)|Codeforces|Educational Codeforces Round 12|9|\n|<ul><li>- [ ] Done</li></ul>|89|[T-Shirts](http://codeforces.com/problemset/problem/702/F)|Codeforces|Educational Codeforces Round 15|9|\n|<ul><li>- [ ] Done</li></ul>|90|[Cyclic Cipher](http://codeforces.com/problemset/problem/722/F)|Codeforces|Intel Code Challenge Elimination Round (Div. 1 + Div. 2, combined)|9|\n|<ul><li>- [ ] Done</li></ul>|91|[Family Photos](http://codeforces.com/problemset/problem/725/F)|Codeforces|Canada Cup 2016|9|\n|<ul><li>- [ ] Done</li></ul>|92|[New Year and Finding Roots](http://codeforces.com/problemset/problem/750/F)|Codeforces|Good Bye 2016|9|\n|<ul><li>- [ ] Done</li></ul>|93|[Mice and Holes](http://codeforces.com/problemset/problem/797/F)|Codeforces|Educational Codeforces Round 19|9|\n|<ul><li>- [ ] Done</li></ul>|94|[Bipartite Checking](http://codeforces.com/problemset/problem/813/F)|Codeforces|Educational Codeforces Round 22|9|\n|<ul><li>- [ ] Done</li></ul>|95|[Paths](http://codeforces.com/problemset/problem/870/F)|Codeforces|Technocup 2018 - Elimination Round 2|9|\n|<ul><li>- [ ] Done</li></ul>|96|[Connecting Vertices](http://codeforces.com/problemset/problem/888/F)|Codeforces|Educational Codeforces Round 32|9|\n|<ul><li>- [ ] Done</li></ul>|97|[Clear The Matrix](http://codeforces.com/problemset/problem/903/F)|Codeforces|Educational Codeforces Round 34 (Rated for Div. 2)|9|\n|<ul><li>- [ ] Done</li></ul>|98|[AND-permutations](http://codeforces.com/problemset/problem/909/F)|Codeforces|Codeforces Round #455 (Div. 2)|9|\n|<ul><li>- [ ] Done</li></ul>|99|[Strongly Connected Tournament](http://codeforces.com/problemset/problem/913/F)|Codeforces|Hello 2018|9|\n|<ul><li>- [ ] Done</li></ul>|100|[Substrings in a String](http://codeforces.com/problemset/problem/914/F)|Codeforces|Codecraft-18 and Codeforces Round #458 (Div. 1 + Div. 2, combined)|9|\n|<ul><li>- [ ] Done</li></ul>|101|[Erasing Substrings](http://codeforces.com/problemset/problem/938/F)|Codeforces|Educational Codeforces Round 38 (Rated for Div. 2)|9|\n|<ul><li>- [ ] Done</li></ul>|102|[Cutlet](http://codeforces.com/problemset/problem/939/F)|Codeforces|Codeforces Round #464 (Div. 2)|9|\n|<ul><li>- [ ] Done</li></ul>|103|[Fafa and Array](http://codeforces.com/problemset/problem/935/F)|Codeforces|Codeforces Round #465 (Div. 2)|9|\n|<ul><li>- [ ] Done</li></ul>|104|[Snow sellers](http://codeforces.com/problemset/problem/48/F)|Codeforces|School Personal Contest #3 (Winter Computer School 2010/11) - Codeforces Beta Round #45 (ACM-ICPC Rules)|10|\n|<ul><li>- [ ] Done</li></ul>|105|[Gnomes of Might and Magic](http://codeforces.com/problemset/problem/175/F)|Codeforces|Codeforces Round #115|10|\n|<ul><li>- [ ] Done</li></ul>|106|[Duff in Mafia](http://codeforces.com/problemset/problem/587/D)|Codeforces|Codeforces Round #326 (Div. 1) & Codeforces Round #326 (Div. 2)|10|\n|<ul><li>- [ ] Done</li></ul>|107|[Bearish Fanpages](http://codeforces.com/problemset/problem/643/D)|Codeforces|VK Cup 2016 - Round 3|10|\n|<ul><li>- [ ] Done</li></ul>|108|[Sequence Recovery](http://codeforces.com/problemset/problem/796/F)|Codeforces|Codeforces Round #408 (Div. 2)|10|\n|<ul><li>- [ ] Done</li></ul>|109|[Beautiful fountains rows](http://codeforces.com/problemset/problem/799/F)|Codeforces|Playrix Codescapes Cup (Codeforces Round #413, rated, Div. 1 + Div. 2)|10|\n|<ul><li>- [ ] Done</li></ul>|110|[Cut Length](http://codeforces.com/problemset/problem/598/F)|Codeforces|Educational Codeforces Round 1|10|\n|<ul><li>- [ ] Done</li></ul>|111|[Simba on the Circle](http://codeforces.com/problemset/problem/612/F)|Codeforces|Educational Codeforces Round 4|10|\n|<ul><li>- [ ] Done</li></ul>|112|[Ants on a Circle](http://codeforces.com/problemset/problem/652/F)|Codeforces|Educational Codeforces Round 10|10|\n|<ul><li>- [ ] Done</li></ul>|113|[Tree nesting](http://codeforces.com/problemset/problem/762/F)|Codeforces|Educational Codeforces Round 17|10|\n|<ul><li>- [ ] Done</li></ul>|114|[Mages and Monsters](http://codeforces.com/problemset/problem/792/F)|Codeforces|Educational Codeforces Round 18|10|\n|<ul><li>- [ ] Done</li></ul>|115|[Guards In The Storehouse](http://codeforces.com/problemset/problem/845/F)|Codeforces|Educational Codeforces Round 27|10|\n|<ul><li>- [ ] Done</li></ul>|116|[Mahmoud and Ehab and the final stage](http://codeforces.com/problemset/problem/862/F)|Codeforces|Codeforces Round #435 (Div. 2)|10|\n|<ul><li>- [ ] Done</li></ul>|117|[Nagini](http://codeforces.com/problemset/problem/855/F)|Codeforces|Manthan, Codefest 17|10|\n|<ul><li>- [ ] Done</li></ul>|118|[Row of Models](http://codeforces.com/problemset/problem/887/F)|Codeforces|Codeforces Round #444 (Div. 2)|10|\n|<ul><li>- [ ] Done</li></ul>|119|[A Game With Numbers](http://codeforces.com/problemset/problem/919/F)|Codeforces|Codeforces Round #460 (Div. 2)|10|\n"
  },
  {
    "path": "categories/028. dsu/README.md",
    "content": "# 028. dsu\n\n\n| Checkbox | ID | Problem Name|Online Judge|Contest|Difficulty Level|\n|:---:|:---:|:---:|:---:|:---:|:---:|\n|<ul><li>- [ ] Done</li></ul>|1|[Ice Skating](http://codeforces.com/problemset/problem/217/A)|Codeforces|Codeforces Round #134 (Div. 1) & Codeforces Round #134 (Div. 2)|1|\n|<ul><li>- [ ] Done</li></ul>|2|[Graph Connectivity](https://uva.onlinejudge.org/index.php?option=onlinejudge&page=show_problem&problem=400)|UVA||1|\n|<ul><li>- [ ] Done</li></ul>|3|[Network Connections](https://uva.onlinejudge.org/index.php?option=onlinejudge&page=show_problem&problem=734)|UVA||1|\n|<ul><li>- [ ] Done</li></ul>|4|[Misha and Changing Handles](http://codeforces.com/problemset/problem/501/B)|Codeforces|Codeforces Round #285 (Div. 2)|1|\n|<ul><li>- [ ] Done</li></ul>|5|[Learning Languages](http://codeforces.com/problemset/problem/277/A)|Codeforces|Codeforces Round #170 (Div. 1) & Codeforces Round #170 (Div. 2)|1|\n|<ul><li>- [ ] Done</li></ul>|6|[Drazil and His Happy Friends](http://codeforces.com/problemset/problem/515/B)|Codeforces|Codeforces Round #292 (Div. 1) & Codeforces Round #292 (Div. 2) & Codeforces Round #292 (Div. 1) & Codeforces Round #292 (Div. 2)|2|\n|<ul><li>- [ ] Done</li></ul>|7|[Mr. Kitayuta's Colorful Graph](http://codeforces.com/problemset/problem/506/D)|Codeforces|Codeforces Round #286 (Div. 1) & Codeforces Round #286 (Div. 2) & Codeforces Round #286 (Div. 1) & Codeforces Round #286 (Div. 2)|2|\n|<ul><li>- [ ] Done</li></ul>|8|[New Year Permutation](http://codeforces.com/problemset/problem/500/B)|Codeforces|Good Bye 2014|2|\n|<ul><li>- [ ] Done</li></ul>|9|[DZY Loves Chemistry](http://codeforces.com/problemset/problem/445/B)|Codeforces|Codeforces Round #254 (Div. 2)|2|\n|<ul><li>- [ ] Done</li></ul>|10|[Knight Tournament](http://codeforces.com/problemset/problem/356/A)|Codeforces|Codeforces Round #207 (Div. 1) & Codeforces Round #207 (Div. 2)|2|\n|<ul><li>- [ ] Done</li></ul>|11|[The Suspects](https://uva.onlinejudge.org/index.php?option=onlinejudge&page=show_problem&problem=3638)|UVA||2|\n|<ul><li>- [ ] Done</li></ul>|12|[Timofey and a tree](http://codeforces.com/problemset/problem/763/A)|Codeforces|Codeforces Round #395 (Div. 1) & Codeforces Round #395 (Div. 2)|2|\n|<ul><li>- [ ] Done</li></ul>|13|[Mr. Kitayuta's Colorful Graph](http://codeforces.com/problemset/problem/505/B)|Codeforces|Codeforces Round #286 (Div. 1) & Codeforces Round #286 (Div. 2) & Codeforces Round #286 (Div. 1) & Codeforces Round #286 (Div. 2)|2|\n|<ul><li>- [ ] Done</li></ul>|14|[FRIEND CIRCLE](http://www.spoj.com/problems/FRNDCIRC/)|SPOJ||2|\n|<ul><li>- [ ] Done</li></ul>|15|[Lost and survived](http://www.spoj.com/problems/LOSTNSURVIVED/)|SPOJ||2|\n|<ul><li>- [ ] Done</li></ul>|16|[Anansi's Cobweb](http://acm.timus.ru/problem.aspx?space=1&num=1671)|Timus||2|\n|<ul><li>- [ ] Done</li></ul>|17|[Strange Food Chain](http://www.spoj.com/problems/CHAIN/)|SPOJ||2|\n|<ul><li>- [ ] Done</li></ul>|18|[War](https://uva.onlinejudge.org/index.php?option=onlinejudge&page=show_problem&problem=1099)|UVA||2|\n|<ul><li>- [ ] Done</li></ul>|19|[Forests](https://uva.onlinejudge.org/index.php?option=onlinejudge&page=show_problem&problem=1168)|UVA||2|\n|<ul><li>- [ ] Done</li></ul>|20|[Cthulhu](http://codeforces.com/problemset/problem/103/B)|Codeforces|Codeforces Beta Round #80 (Div. 1 Only) & Codeforces Beta Round #80 (Div. 2 Only)|3|\n|<ul><li>- [ ] Done</li></ul>|21|[New Reform](http://codeforces.com/problemset/problem/659/E)|Codeforces|Codeforces Round #346 (Div. 2)|3|\n|<ul><li>- [ ] Done</li></ul>|22|[Mike and Feet](http://codeforces.com/problemset/problem/547/B)|Codeforces|Codeforces Round #305 (Div. 1) & Codeforces Round #305 (Div. 2)|3|\n|<ul><li>- [ ] Done</li></ul>|23|[Queue](http://codeforces.com/problemset/problem/490/B)|Codeforces|Codeforces Round #279 (Div. 2)|3|\n|<ul><li>- [ ] Done</li></ul>|24|[A + B Strikes Back](http://codeforces.com/problemset/problem/409/H)|Codeforces|April Fools Day Contest 2014|3|\n|<ul><li>- [ ] Done</li></ul>|25|[Arpa's weak amphitheater and Mehrdad's valuable Hoses](http://codeforces.com/problemset/problem/741/B)|Codeforces|Codeforces Round #383 (Div. 1) & Codeforces Round #383 (Div. 2)|3|\n|<ul><li>- [ ] Done</li></ul>|26|[Social Network Community](http://www.spoj.com/problems/SOCNETC/)|SPOJ||3|\n|<ul><li>- [ ] Done</li></ul>|27|[Dorm Water Supply](http://codeforces.com/problemset/problem/107/A)|Codeforces|Codeforces Beta Round #83 (Div. 1 Only) & Codeforces Beta Round #83 (Div. 2 Only)|4|\n|<ul><li>- [ ] Done</li></ul>|28|[Roads not only in Berland](http://codeforces.com/problemset/problem/25/D)|Codeforces|Codeforces Beta Round #25 (Div. 2 Only)|4|\n|<ul><li>- [ ] Done</li></ul>|29|[Lomsat gelral](http://codeforces.com/problemset/problem/600/E)|Codeforces|Educational Codeforces Round 2|4|\n|<ul><li>- [ ] Done</li></ul>|30|[Design Tutorial: Inverse the Problem](http://codeforces.com/problemset/problem/472/D)|Codeforces|Codeforces Round #270|4|\n|<ul><li>- [ ] Done</li></ul>|31|[Two Sets](http://codeforces.com/problemset/problem/468/B)|Codeforces|Codeforces Round #268 (Div. 1) & Codeforces Round #268 (Div. 2)|4|\n|<ul><li>- [ ] Done</li></ul>|32|[Civilization](http://codeforces.com/problemset/problem/455/C)|Codeforces|Codeforces Round #260 (Div. 1) & Codeforces Round #260 (Div. 2)|4|\n|<ul><li>- [ ] Done</li></ul>|33|[The Child and Zoo](http://codeforces.com/problemset/problem/437/D)|Codeforces|Codeforces Round #250 (Div. 2) & Codeforces Round #250 (Div. 1)|4|\n|<ul><li>- [ ] Done</li></ul>|34|[Vessels](http://codeforces.com/problemset/problem/371/D)|Codeforces|Codeforces Round #218 (Div. 2)|4|\n|<ul><li>- [ ] Done</li></ul>|35|[Serial Time!](http://codeforces.com/problemset/problem/60/B)|Codeforces|Codeforces Beta Round #56|4|\n|<ul><li>- [ ] Done</li></ul>|36|[Clear Symmetry](http://codeforces.com/problemset/problem/201/A)|Codeforces|Codeforces Round #127 (Div. 1) & Codeforces Round #127 (Div. 2)|5|\n|<ul><li>- [ ] Done</li></ul>|37|[Lucky Tree](http://codeforces.com/problemset/problem/109/C)|Codeforces|Codeforces Beta Round #84 (Div. 1 Only) & Codeforces Beta Round #84 (Div. 2 Only)|5|\n|<ul><li>- [ ] Done</li></ul>|38|[pSort](http://codeforces.com/problemset/problem/28/B)|Codeforces|Codeforces Beta Round #28 (Codeforces format)|5|\n|<ul><li>- [ ] Done</li></ul>|39|[Exposition](http://codeforces.com/problemset/problem/6/E)|Codeforces|Codeforces Beta Round #6 (Div. 2 Only)|5|\n|<ul><li>- [ ] Done</li></ul>|40|[Minimum spanning tree for each edge](http://codeforces.com/problemset/problem/609/E)|Codeforces|Educational Codeforces Round 3|5|\n|<ul><li>- [ ] Done</li></ul>|41|[Moodular Arithmetic](http://codeforces.com/problemset/problem/603/B)|Codeforces|Codeforces Round #334 (Div. 1) & Codeforces Round #334 (Div. 2)|5|\n|<ul><li>- [ ] Done</li></ul>|42|[Dungeons and Candies](http://codeforces.com/problemset/problem/436/C)|Codeforces|Zepto Code Rush 2014|5|\n|<ul><li>- [ ] Done</li></ul>|43|[Dima and Bacteria](http://codeforces.com/problemset/problem/400/D)|Codeforces|Codeforces Round #234 (Div. 2)|5|\n|<ul><li>- [ ] Done</li></ul>|44|[Connected Components](http://codeforces.com/problemset/problem/292/D)|Codeforces|Croc Champ 2013 - Round 1|5|\n|<ul><li>- [ ] Done</li></ul>|45|[Hierarchy](http://codeforces.com/problemset/problem/17/B)|Codeforces|Codeforces Beta Round #17|5|\n|<ul><li>- [ ] Done</li></ul>|46|[Weird journey](http://codeforces.com/problemset/problem/788/B)|Codeforces|Codeforces Round #407 (Div. 1) & Codeforces Round #407 (Div. 2)|5|\n|<ul><li>- [ ] Done</li></ul>|47|[Mahmoud and a Dictionary](http://codeforces.com/problemset/problem/766/D)|Codeforces|Codeforces Round #396 (Div. 2)|5|\n|<ul><li>- [ ] Done</li></ul>|48|[The Road to Berland is Paved With Good Intentions](http://codeforces.com/problemset/problem/228/E)|Codeforces|Codeforces Round #141 (Div. 2)|6|\n|<ul><li>- [ ] Done</li></ul>|49|[Party](http://codeforces.com/problemset/problem/177/C2)|Codeforces|ABBYY Cup 2.0 - Easy|6|\n|<ul><li>- [ ] Done</li></ul>|50|[Party](http://codeforces.com/problemset/problem/177/C1)|Codeforces|ABBYY Cup 2.0 - Easy|6|\n|<ul><li>- [ ] Done</li></ul>|51|[Holes](http://codeforces.com/problemset/problem/13/E)|Codeforces|Codeforces Beta Round #13|6|\n|<ul><li>- [ ] Done</li></ul>|52|[Polycarp and Hay](http://codeforces.com/problemset/problem/659/F)|Codeforces|Codeforces Round #346 (Div. 2)|6|\n|<ul><li>- [ ] Done</li></ul>|53|[Table Compression](http://codeforces.com/problemset/problem/650/C)|Codeforces|Codeforces Round #345 (Div. 1) & Codeforces Round #345 (Div. 2)|6|\n|<ul><li>- [ ] Done</li></ul>|54|[Restructuring Company](http://codeforces.com/problemset/problem/566/D)|Codeforces|VK Cup 2015 - Finals, online mirror|6|\n|<ul><li>- [ ] Done</li></ul>|55|[Love Triangles](http://codeforces.com/problemset/problem/553/C)|Codeforces|Codeforces Round #309 (Div. 1) & Codeforces Round #309 (Div. 2)|6|\n|<ul><li>- [ ] Done</li></ul>|56|[New Year Domino](http://codeforces.com/problemset/problem/500/E)|Codeforces|Good Bye 2014|6|\n|<ul><li>- [ ] Done</li></ul>|57|[Information Graph](http://codeforces.com/problemset/problem/466/E)|Codeforces|Codeforces Round #266 (Div. 2)|6|\n|<ul><li>- [ ] Done</li></ul>|58|[Ring Road 2](http://codeforces.com/problemset/problem/27/D)|Codeforces|Codeforces Beta Round #27 (Codeforces format, Div. 2)|6|\n|<ul><li>- [ ] Done</li></ul>|59|[Counter Attack](http://codeforces.com/problemset/problem/190/E)|Codeforces|Codeforces Round #120 (Div. 2)|7|\n|<ul><li>- [ ] Done</li></ul>|60|[Weak Memory](http://codeforces.com/problemset/problem/187/C)|Codeforces|Codeforces Round #119 (Div. 1) & Codeforces Round #119 (Div. 2)|7|\n|<ul><li>- [ ] Done</li></ul>|61|[Range Increments](http://codeforces.com/problemset/problem/174/C)|Codeforces|VK Cup 2012 Round 3 (Unofficial Div. 2 Edition)|7|\n|<ul><li>- [ ] Done</li></ul>|62|[Beard Graph](http://codeforces.com/problemset/problem/165/D)|Codeforces|Codeforces Round #112 (Div. 2)|7|\n|<ul><li>- [ ] Done</li></ul>|63|[Edges in MST](http://codeforces.com/problemset/problem/160/D)|Codeforces|Codeforces Round #111 (Div. 2)|7|\n|<ul><li>- [ ] Done</li></ul>|64|[Lucky Country](http://codeforces.com/problemset/problem/95/E)|Codeforces|Codeforces Beta Round #77 (Div. 1 Only)|7|\n|<ul><li>- [ ] Done</li></ul>|65|[Ski Base](http://codeforces.com/problemset/problem/91/C)|Codeforces|Codeforces Beta Round #75 (Div. 1 Only) & Codeforces Beta Round #75 (Div. 2 Only)|7|\n|<ul><li>- [ ] Done</li></ul>|66|[Beavermuncher-0xFF](http://codeforces.com/problemset/problem/77/C)|Codeforces|Codeforces Beta Round #69 (Div. 1 Only) & Codeforces Beta Round #69 (Div. 2 Only)|7|\n|<ul><li>- [ ] Done</li></ul>|67|[Gift](http://codeforces.com/problemset/problem/76/A)|Codeforces|All-Ukrainian School Olympiad in Informatics|7|\n|<ul><li>- [ ] Done</li></ul>|68|[Chessboard Billiard](http://codeforces.com/problemset/problem/74/C)|Codeforces|Codeforces Beta Round #68|7|\n|<ul><li>- [ ] Done</li></ul>|69|[Fairy](http://codeforces.com/problemset/problem/19/E)|Codeforces|Codeforces Beta Round #19|7|\n|<ul><li>- [ ] Done</li></ul>|70|[Bear and Forgotten Tree 2](http://codeforces.com/problemset/problem/653/E)|Codeforces|IndiaHacks 2016 - Online Edition (Div. 1 + Div. 2)|7|\n|<ul><li>- [ ] Done</li></ul>|71|[Pursuit For Artifacts](http://codeforces.com/problemset/problem/652/E)|Codeforces|Educational Codeforces Round 10|7|\n|<ul><li>- [ ] Done</li></ul>|72|[Acyclic Organic Compounds](http://codeforces.com/problemset/problem/601/D)|Codeforces|Codeforces Round #333 (Div. 1)|7|\n|<ul><li>- [ ] Done</li></ul>|73|[Valera and Swaps](http://codeforces.com/problemset/problem/441/D)|Codeforces|Codeforces Round #252 (Div. 2)|7|\n|<ul><li>- [ ] Done</li></ul>|74|[Nanami's Digital Board](http://codeforces.com/problemset/problem/433/D)|Codeforces|Codeforces Round #248 (Div. 2) & Codeforces Round #248 (Div. 1)|7|\n|<ul><li>- [ ] Done</li></ul>|75|[Dima and Trap Graph](http://codeforces.com/problemset/problem/366/D)|Codeforces|Codeforces Round #214 (Div. 2)|7|\n|<ul><li>- [ ] Done</li></ul>|76|[Fools and Foolproof Roads](http://codeforces.com/problemset/problem/362/D)|Codeforces|Codeforces Round #212 (Div. 2)|7|\n|<ul><li>- [ ] Done</li></ul>|77|[Black and White Tree](http://codeforces.com/problemset/problem/260/D)|Codeforces|Codeforces Round #158 (Div. 2)|7|\n|<ul><li>- [ ] Done</li></ul>|78|[Petya and Spiders](http://codeforces.com/problemset/problem/111/C)|Codeforces|Codeforces Beta Round #85 (Div. 1 Only) & Codeforces Beta Round #85 (Div. 2 Only)|7|\n|<ul><li>- [ ] Done</li></ul>|79|[Bear and Square Grid](http://codeforces.com/problemset/problem/679/C)|Codeforces|Codeforces Round #356 (Div. 1) & Codeforces Round #356 (Div. 2)|7|\n|<ul><li>- [ ] Done</li></ul>|80|[Envy](http://codeforces.com/problemset/problem/891/C)|Codeforces|Codeforces Round #446 (Div. 1) & Codeforces Round #446 (Div. 2)|7|\n|<ul><li>- [ ] Done</li></ul>|81|[Peterson Polyglot](http://codeforces.com/problemset/problem/778/C)|Codeforces|Codeforces Round #402 (Div. 1) & Codeforces Round #402 (Div. 2)|7|\n|<ul><li>- [ ] Done</li></ul>|82|[Digit Tree](http://codeforces.com/problemset/problem/715/C)|Codeforces|Codeforces Round #372 (Div. 1) & Codeforces Round #372 (Div. 2)|7|\n|<ul><li>- [ ] Done</li></ul>|83|[Mad Joe](http://codeforces.com/problemset/problem/250/E)|Codeforces|CROC-MBTU 2012, Final Round (Online version, Div. 2)|8|\n|<ul><li>- [ ] Done</li></ul>|84|[Trails and Glades](http://codeforces.com/problemset/problem/209/C)|Codeforces|VK Cup 2012 Finals, Practice Session|8|\n|<ul><li>- [ ] Done</li></ul>|85|[Opening Portals](http://codeforces.com/problemset/problem/196/E)|Codeforces|Codeforces Round #124 (Div. 1)|8|\n|<ul><li>- [ ] Done</li></ul>|86|[Building Forest](http://codeforces.com/problemset/problem/195/E)|Codeforces|Codeforces Round #123 (Div. 2)|8|\n|<ul><li>- [ ] Done</li></ul>|87|[Clearing Up](http://codeforces.com/problemset/problem/141/E)|Codeforces|Codeforces Round #101 (Div. 2)|8|\n|<ul><li>- [ ] Done</li></ul>|88|[Beautiful Road](http://codeforces.com/problemset/problem/87/D)|Codeforces|Codeforces Beta Round #73 (Div. 1 Only)|8|\n|<ul><li>- [ ] Done</li></ul>|89|[Guard Towers](http://codeforces.com/problemset/problem/85/E)|Codeforces|Yandex.Algorithm 2011 Round 1|8|\n|<ul><li>- [ ] Done</li></ul>|90|[Interestring graph and Apples](http://codeforces.com/problemset/problem/9/E)|Codeforces|Codeforces Beta Round #9 (Div. 2 Only)|8|\n|<ul><li>- [ ] Done</li></ul>|91|[Drazil and Morning Exercise](http://codeforces.com/problemset/problem/516/D)|Codeforces|Codeforces Round #292 (Div. 1)|8|\n|<ul><li>- [ ] Done</li></ul>|92|[Three strings](http://codeforces.com/problemset/problem/452/E)|Codeforces|MemSQL Start[c]UP 2.0 - Round 1|8|\n|<ul><li>- [ ] Done</li></ul>|93|[DZY Loves Planting](http://codeforces.com/problemset/problem/444/E)|Codeforces|Codeforces Round #254 (Div. 1)|8|\n|<ul><li>- [ ] Done</li></ul>|94|[Ilya and Two Numbers](http://codeforces.com/problemset/problem/313/E)|Codeforces|Codeforces Round #186 (Div. 2)|8|\n|<ul><li>- [ ] Done</li></ul>|95|[Dividing Kingdom II](http://codeforces.com/problemset/problem/687/D)|Codeforces|Codeforces Round #360 (Div. 1)|8|\n|<ul><li>- [ ] Done</li></ul>|96|[Vladik and Entertaining Flags](http://codeforces.com/problemset/problem/811/E)|Codeforces|Codeforces Round #416 (Div. 2)|8|\n|<ul><li>- [ ] Done</li></ul>|97|[Alien DNA](http://codeforces.com/problemset/problem/217/E)|Codeforces|Codeforces Round #134 (Div. 1)|9|\n|<ul><li>- [ ] Done</li></ul>|98|[Cutting a Fence](http://codeforces.com/problemset/problem/212/D)|Codeforces|VK Cup 2012 Finals (unofficial online-version)|9|\n|<ul><li>- [ ] Done</li></ul>|99|[Savior](http://codeforces.com/problemset/problem/60/D)|Codeforces|Codeforces Beta Round #56|9|\n|<ul><li>- [ ] Done</li></ul>|100|[Hercule Poirot Problem](http://codeforces.com/problemset/problem/46/F)|Codeforces|School Personal Contest #2 (Winter Computer School 2010/11) - Codeforces Beta Round #43 (ACM-ICPC Rules)|9|\n|<ul><li>- [ ] Done</li></ul>|101|[Two Paths](http://codeforces.com/problemset/problem/36/E)|Codeforces|Codeforces Beta Round #36|9|\n|<ul><li>- [ ] Done</li></ul>|102|[Clockwork Bomb](http://codeforces.com/problemset/problem/650/E)|Codeforces|Codeforces Round #345 (Div. 1)|9|\n|<ul><li>- [ ] Done</li></ul>|103|[Pastoral Oddities](http://codeforces.com/problemset/problem/603/E)|Codeforces|Codeforces Round #334 (Div. 1)|9|\n|<ul><li>- [ ] Done</li></ul>|104|[Appleman and Complicated Task](http://codeforces.com/problemset/problem/461/D)|Codeforces|Codeforces Round #263 (Div. 1)|9|\n|<ul><li>- [ ] Done</li></ul>|105|[Dima and Kicks](http://codeforces.com/problemset/problem/358/E)|Codeforces|Codeforces Round #208 (Div. 2)|9|\n|<ul><li>- [ ] Done</li></ul>|106|[The Red Button](http://codeforces.com/problemset/problem/325/E)|Codeforces|MemSQL start[c]up Round 1|9|\n|<ul><li>- [ ] Done</li></ul>|107|[Reclamation](http://codeforces.com/problemset/problem/325/D)|Codeforces|MemSQL start[c]up Round 1|9|\n|<ul><li>- [ ] Done</li></ul>|108|[Pairs](http://codeforces.com/problemset/problem/81/E)|Codeforces|Yandex.Algorithm Open 2011 Qualification 1|9|\n|<ul><li>- [ ] Done</li></ul>|109|[Timofey and our friends animals](http://codeforces.com/problemset/problem/763/E)|Codeforces|Codeforces Round #395 (Div. 1)|9|\n|<ul><li>- [ ] Done</li></ul>|110|[Welcome home, Chtholly](http://codeforces.com/problemset/problem/896/E)|Codeforces|Codeforces Round #449 (Div. 1)|9|\n|<ul><li>- [ ] Done</li></ul>|111|[Entertaining Geodetics](http://codeforces.com/problemset/problem/105/D)|Codeforces|Codeforces Beta Round #81|10|\n|<ul><li>- [ ] Done</li></ul>|112|[Leaders](http://codeforces.com/problemset/problem/97/E)|Codeforces|Yandex.Algorithm 2011 Finals|10|\n|<ul><li>- [ ] Done</li></ul>|113|[Campus](http://codeforces.com/problemset/problem/571/D)|Codeforces|Codeforces Round #317 [AimFund Thanks-Round] (Div. 1)|10|\n|<ul><li>- [ ] Done</li></ul>|114|[MUH and Lots and Lots of Segments](http://codeforces.com/problemset/problem/471/E)|Codeforces|Codeforces Round #269 (Div. 2)|10|\n|<ul><li>- [ ] Done</li></ul>|115|[Inna and Babies](http://codeforces.com/problemset/problem/374/E)|Codeforces|Codeforces Round #220 (Div. 2)|10|\n|<ul><li>- [ ] Done</li></ul>|116|[School](http://codeforces.com/problemset/problem/45/B)|Codeforces|School Team Contest #3 (Winter Computer School 2010/11)|10|\n"
  },
  {
    "path": "categories/029. bitmasks/README.md",
    "content": "# 029. bitmasks\n\n\n| Checkbox | ID | Problem Name|Online Judge|Year|Contest|Difficulty Level|\n|:---:|:---:|:---:|:---:|:---:|:---:|:---:|\n|<ul><li>- [ ] Done</li></ul>|1|[K-based Numbers](http://acm.timus.ru/problem.aspx?space=1&num=1009)|Timus|||1|\n|<ul><li>- [ ] Done</li></ul>|2|[Histogram](http://www.spoj.com/problems/HIST2/)|SPOJ|||1|\n|<ul><li>- [ ] Done</li></ul>|3|[Assignments](http://www.spoj.com/problems/ASSIGN/)|SPOJ|||1|\n|<ul><li>- [ ] Done</li></ul>|4|[Fedor and New Game](http://codeforces.com/problemset/problem/467/B)|Codeforces||Codeforces Round #267 (Div. 2)|1|\n|<ul><li>- [ ] Done</li></ul>|5|[Raising Bacteria](http://codeforces.com/problemset/problem/579/A)|Codeforces||Codeforces Round #320 (Div. 2) [Bayan Thanks-Round]|1|\n|<ul><li>- [ ] Done</li></ul>|6|[Preparing Olympiad](http://codeforces.com/problemset/problem/550/B)|Codeforces||Codeforces Round #306 (Div. 2)|1|\n|<ul><li>- [ ] Done</li></ul>|7|[Tavas and SaDDas](http://codeforces.com/problemset/problem/535/B)|Codeforces||Codeforces Round #299 (Div. 2)|1|\n|<ul><li>- [ ] Done</li></ul>|8|[Dreamoon and WiFi](http://codeforces.com/problemset/problem/476/B)|Codeforces||Codeforces Round #272 (Div. 2)|1|\n|<ul><li>- [ ] Done</li></ul>|9|[LATGACH3](http://www.spoj.com/problems/M3TILE/)|SPOJ|||1|\n|<ul><li>- [ ] Done</li></ul>|10|[Chloe and the sequence ](http://codeforces.com/problemset/problem/743/B)|Codeforces||Codeforces Round #384 (Div. 2)|1|\n|<ul><li>- [ ] Done</li></ul>|11|[Lucky Numbers (easy)](http://codeforces.com/problemset/problem/96/B)|Codeforces||Codeforces Beta Round #77 (Div. 2 Only)|2|\n|<ul><li>- [ ] Done</li></ul>|12|[Lineup](http://www.spoj.com/problems/LINEUP/)|SPOJ|||2|\n|<ul><li>- [ ] Done</li></ul>|13|[Candles](https://icpcarchive.ecs.baylor.edu/index.php?option=onlinejudge&page=show_problem&problem=3821)|Live Archive|2011|Asia - Dhaka|2|\n|<ul><li>- [ ] Done</li></ul>|14|[False Mirrors](http://acm.timus.ru/problem.aspx?space=1&num=1152)|Timus|||2|\n|<ul><li>- [ ] Done</li></ul>|15|[Bits](http://codeforces.com/problemset/problem/484/A)|Codeforces||Codeforces Round #276 (Div. 1) & Codeforces Round #276 (Div. 2)|2|\n|<ul><li>- [ ] Done</li></ul>|16|[Pebbles](https://icpcarchive.ecs.baylor.edu/index.php?option=onlinejudge&page=show_problem&problem=1996)|Live Archive|2007|North America - Pacific Northwest & North America - Southern California|2|\n|<ul><li>- [ ] Done</li></ul>|17|[Array](http://codeforces.com/problemset/problem/224/B)|Codeforces||Codeforces Round #138 (Div. 2)|3|\n|<ul><li>- [ ] Done</li></ul>|18|[PICK UP DROP ESCAPE](http://www.spoj.com/problems/CODEIT02/)|SPOJ|||3|\n|<ul><li>- [ ] Done</li></ul>|19|[Fetching Cooking Tools](http://www.codechef.com/problems/TOOLS)|CodeChef|||3|\n|<ul><li>- [ ] Done</li></ul>|20|[The Child and Set](http://codeforces.com/problemset/problem/437/B)|Codeforces||Codeforces Round #250 (Div. 2)|3|\n|<ul><li>- [ ] Done</li></ul>|21|[Kefa and Dishes](http://codeforces.com/problemset/problem/580/D)|Codeforces||Codeforces Round #321 (Div. 2)|3|\n|<ul><li>- [ ] Done</li></ul>|22|[Little Girl and Maximum XOR](http://codeforces.com/problemset/problem/276/D)|Codeforces||Codeforces Round #169 (Div. 2)|3|\n|<ul><li>- [ ] Done</li></ul>|23|[LLPS](http://codeforces.com/problemset/problem/202/A)|Codeforces||Codeforces Round #127 (Div. 2)|3|\n|<ul><li>- [ ] Done</li></ul>|24|[Short Program](http://codeforces.com/problemset/problem/878/A)|Codeforces||Codeforces Round #443 (Div. 1) & Codeforces Round #443 (Div. 2)|3|\n|<ul><li>- [ ] Done</li></ul>|25|[Sagheer, the Hausmeister](http://codeforces.com/problemset/problem/812/B)|Codeforces||Codeforces Round #417 (Div. 2)|3|\n|<ul><li>- [ ] Done</li></ul>|26|[Undoubtedly Lucky Numbers](http://codeforces.com/problemset/problem/244/B)|Codeforces||Codeforces Round #150 (Div. 2)|4|\n|<ul><li>- [ ] Done</li></ul>|27|[The Brand New Function](http://codeforces.com/problemset/problem/243/A)|Codeforces||Codeforces Round #150 (Div. 1) & Codeforces Round #150 (Div. 2)|4|\n|<ul><li>- [ ] Done</li></ul>|28|[Tournament](http://codeforces.com/problemset/problem/27/B)|Codeforces||Codeforces Beta Round #27 (Codeforces format, Div. 2)|4|\n|<ul><li>- [ ] Done</li></ul>|29|[And Or](https://uva.onlinejudge.org/index.php?option=onlinejudge&page=show_problem&problem=4763)|UVA|||4|\n|<ul><li>- [ ] Done</li></ul>|30|[Three Logos](http://codeforces.com/problemset/problem/581/D)|Codeforces||Codeforces Round #322 (Div. 2)|4|\n|<ul><li>- [ ] Done</li></ul>|31|[Permutations](http://codeforces.com/problemset/problem/513/B2)|Codeforces||Rockethon 2015|4|\n|<ul><li>- [ ] Done</li></ul>|32|[Fox And Jumping](http://codeforces.com/problemset/problem/510/D)|Codeforces||Codeforces Round #290 (Div. 2) & Codeforces Round #290 (Div. 1)|4|\n|<ul><li>- [ ] Done</li></ul>|33|[Little Pony and Harmony Chest](http://codeforces.com/problemset/problem/453/B)|Codeforces||Codeforces Round #259 (Div. 1) & Codeforces Round #259 (Div. 2)|4|\n|<ul><li>- [ ] Done</li></ul>|34|[XOR on Segment](http://codeforces.com/problemset/problem/242/E)|Codeforces||Codeforces Round #149 (Div. 2)|4|\n|<ul><li>- [ ] Done</li></ul>|35|[Compatible Numbers](http://codeforces.com/problemset/problem/165/E)|Codeforces||Codeforces Round #112 (Div. 2)|5|\n|<ul><li>- [ ] Done</li></ul>|36|[PFAST Inc.](http://codeforces.com/problemset/problem/114/B)|Codeforces||Codeforces Beta Round #86 (Div. 2 Only)|5|\n|<ul><li>- [ ] Done</li></ul>|37|[A Simple Task](http://codeforces.com/problemset/problem/11/D)|Codeforces||Codeforces Beta Round #11|5|\n|<ul><li>- [ ] Done</li></ul>|38|[New Year Tree](http://codeforces.com/problemset/problem/620/E)|Codeforces||Educational Codeforces Round 6|5|\n|<ul><li>- [ ] Done</li></ul>|39|[Mike and Foam](http://codeforces.com/problemset/problem/547/C)|Codeforces||Codeforces Round #305 (Div. 1) & Codeforces Round #305 (Div. 2)|5|\n|<ul><li>- [ ] Done</li></ul>|40|[Borya and Hanabi](http://codeforces.com/problemset/problem/442/A)|Codeforces||Codeforces Round #253 (Div. 1) & Codeforces Round #253 (Div. 2)|5|\n|<ul><li>- [ ] Done</li></ul>|41|[Roman and Numbers](http://codeforces.com/problemset/problem/401/D)|Codeforces||Codeforces Round #235 (Div. 2)|5|\n|<ul><li>- [ ] Done</li></ul>|42|[Fox and Minimal path](http://codeforces.com/problemset/problem/388/B)|Codeforces||Codeforces Round #228 (Div. 1) & Codeforces Round #228 (Div. 2)|5|\n|<ul><li>- [ ] Done</li></ul>|43|[Sausage Maximization](http://codeforces.com/problemset/problem/282/E)|Codeforces||Codeforces Round #173 (Div. 2)|5|\n|<ul><li>- [ ] Done</li></ul>|44|[Bitwise Formula](http://codeforces.com/problemset/problem/778/B)|Codeforces||Codeforces Round #402 (Div. 1) & Codeforces Round #402 (Div. 2)|5|\n|<ul><li>- [ ] Done</li></ul>|45|[Square Subsets](http://codeforces.com/problemset/problem/895/C)|Codeforces||Codeforces Round #448 (Div. 2)|5|\n|<ul><li>- [ ] Done</li></ul>|46|[Practice](http://codeforces.com/problemset/problem/234/G)|Codeforces||Codeforces Round #145 (Div. 2, ACM-ICPC Rules) & Codeforces Round #145 (Div. 1, ACM-ICPC Rules)|6|\n|<ul><li>- [ ] Done</li></ul>|47|[Table](http://codeforces.com/problemset/problem/232/B)|Codeforces||Codeforces Round #144 (Div. 1) & Codeforces Round #144 (Div. 2)|6|\n|<ul><li>- [ ] Done</li></ul>|48|[Fish](http://codeforces.com/problemset/problem/16/E)|Codeforces||Codeforces Beta Round #16 (Div. 2 Only)|6|\n|<ul><li>- [ ] Done</li></ul>|49|[Looking for Order](http://codeforces.com/problemset/problem/8/C)|Codeforces||Codeforces Beta Round #8|6|\n|<ul><li>- [ ] Done</li></ul>|50|[Sereja and Table ](http://codeforces.com/problemset/problem/425/B)|Codeforces||Codeforces Round #243 (Div. 1)|6|\n|<ul><li>- [ ] Done</li></ul>|51|[Anya and Cubes](http://codeforces.com/problemset/problem/525/E)|Codeforces||Codeforces Round #297 (Div. 2)|6|\n|<ul><li>- [ ] Done</li></ul>|52|[Second price auction](http://codeforces.com/problemset/problem/513/C)|Codeforces||Rockethon 2015|6|\n|<ul><li>- [ ] Done</li></ul>|53|[Devu and Flowers](http://codeforces.com/problemset/problem/451/E)|Codeforces||Codeforces Round #258 (Div. 2)|6|\n|<ul><li>- [ ] Done</li></ul>|54|[Jzzhu and Numbers](http://codeforces.com/problemset/problem/449/D)|Codeforces||Codeforces Round #257 (Div. 1)|6|\n|<ul><li>- [ ] Done</li></ul>|55|[Random Task](http://codeforces.com/problemset/problem/431/D)|Codeforces||Codeforces Round #247 (Div. 2)|6|\n|<ul><li>- [ ] Done</li></ul>|56|[Cunning Gena](http://codeforces.com/problemset/problem/417/D)|Codeforces||RCC 2014 Warmup (Div. 2) & RCC 2014 Warmup (Div. 1)|6|\n|<ul><li>- [ ] Done</li></ul>|57|[New Year Letter](http://codeforces.com/problemset/problem/379/D)|Codeforces||Good Bye 2013|6|\n|<ul><li>- [ ] Done</li></ul>|58|[Characteristics of Rectangles](http://codeforces.com/problemset/problem/333/D)|Codeforces||Codeforces Round #194 (Div. 1)|6|\n|<ul><li>- [ ] Done</li></ul>|59|[Permutation Sum](http://codeforces.com/problemset/problem/285/D)|Codeforces||Codeforces Round #175 (Div. 2)|6|\n|<ul><li>- [ ] Done</li></ul>|60|[Hongcow's Game](http://codeforces.com/problemset/problem/744/B)|Codeforces||Codeforces Round #385 (Div. 1) & Codeforces Round #385 (Div. 2)|6|\n|<ul><li>- [ ] Done</li></ul>|61|[Unusual Sequences](http://codeforces.com/problemset/problem/900/D)|Codeforces||Codeforces Round #450 (Div. 2)|6|\n|<ul><li>- [ ] Done</li></ul>|62|[Mahmoud and a xor trip](http://codeforces.com/problemset/problem/766/E)|Codeforces||Codeforces Round #396 (Div. 2)|6|\n|<ul><li>- [ ] Done</li></ul>|63|[Vladik and cards](http://codeforces.com/problemset/problem/743/E)|Codeforces||Codeforces Round #384 (Div. 2)|6|\n|<ul><li>- [ ] Done</li></ul>|64|[Train Passengers](p?ID=306)|A2 Online Judge|||6|\n|<ul><li>- [ ] Done</li></ul>|65|[Snake](http://codeforces.com/problemset/problem/225/D)|Codeforces||Codeforces Round #139 (Div. 2)|7|\n|<ul><li>- [ ] Done</li></ul>|66|[Petya and Spiders](http://codeforces.com/problemset/problem/111/C)|Codeforces||Codeforces Beta Round #85 (Div. 1 Only) & Codeforces Beta Round #85 (Div. 2 Only)|7|\n|<ul><li>- [ ] Done</li></ul>|67|[Binary Table](http://codeforces.com/problemset/problem/662/C)|Codeforces||CROC 2016 - Final Round [Private, For Onsite Finalists Only]|7|\n|<ul><li>- [ ] Done</li></ul>|68|[Remembering Strings](http://codeforces.com/problemset/problem/543/C)|Codeforces||Codeforces Round #302 (Div. 1) & Codeforces Round #302 (Div. 2)|7|\n|<ul><li>- [ ] Done</li></ul>|69|[Fuzzy Search](http://codeforces.com/problemset/problem/528/D)|Codeforces||Codeforces Round #296 (Div. 1)|7|\n|<ul><li>- [ ] Done</li></ul>|70|[Guess the Tree](http://codeforces.com/problemset/problem/429/C)|Codeforces||Codeforces Round #245 (Div. 1) & Codeforces Round #245 (Div. 2)|7|\n|<ul><li>- [ ] Done</li></ul>|71|[Inna and Binary Logic](http://codeforces.com/problemset/problem/400/E)|Codeforces||Codeforces Round #234 (Div. 2)|7|\n|<ul><li>- [ ] Done</li></ul>|72|[Captains Mode](http://codeforces.com/problemset/problem/377/C)|Codeforces||Codeforces Round #222 (Div. 1) & Codeforces Round #222 (Div. 2)|7|\n|<ul><li>- [ ] Done</li></ul>|73|[Axis Walking](http://codeforces.com/problemset/problem/327/E)|Codeforces||Codeforces Round #191 (Div. 2)|7|\n|<ul><li>- [ ] Done</li></ul>|74|[Hongcow Buys a Deck of Cards](http://codeforces.com/problemset/problem/744/C)|Codeforces||Codeforces Round #385 (Div. 1) & Codeforces Round #385 (Div. 2)|7|\n|<ul><li>- [ ] Done</li></ul>|75|[Password](http://codeforces.com/problemset/problem/79/D)|Codeforces||Codeforces Beta Round #71|8|\n|<ul><li>- [ ] Done</li></ul>|76|[Sweets Game](http://codeforces.com/problemset/problem/63/E)|Codeforces||Codeforces Beta Round #59 (Div. 2)|8|\n|<ul><li>- [ ] Done</li></ul>|77|[Dead Ends](http://codeforces.com/problemset/problem/53/E)|Codeforces||Codeforces Beta Round #49 (Div. 2)|8|\n|<ul><li>- [ ] Done</li></ul>|78|[Traveling Graph](http://codeforces.com/problemset/problem/21/D)|Codeforces||Codeforces Alpha Round #21 (Codeforces format)|8|\n|<ul><li>- [ ] Done</li></ul>|79|[Game with Strings](http://codeforces.com/problemset/problem/482/C)|Codeforces||Codeforces Round #275 (Div. 1) & Codeforces Round #275 (Div. 2)|8|\n|<ul><li>- [ ] Done</li></ul>|80|[Yash And Trees](http://codeforces.com/problemset/problem/633/G)|Codeforces||Manthan, Codefest 16|8|\n|<ul><li>- [ ] Done</li></ul>|81|[2048](http://codeforces.com/problemset/problem/413/D)|Codeforces||Coder-Strike 2014 - Round 2|8|\n|<ul><li>- [ ] Done</li></ul>|82|[Bear and Floodlight](http://codeforces.com/problemset/problem/385/D)|Codeforces||Codeforces Round #226 (Div. 2)|8|\n|<ul><li>- [ ] Done</li></ul>|83|[Sereja and Sets](http://codeforces.com/problemset/problem/367/D)|Codeforces||Codeforces Round #215 (Div. 1)|8|\n|<ul><li>- [ ] Done</li></ul>|84|[Bags and Coins](http://codeforces.com/problemset/problem/356/D)|Codeforces||Codeforces Round #207 (Div. 1)|8|\n|<ul><li>- [ ] Done</li></ul>|85|[Xenia and Dominoes](http://codeforces.com/problemset/problem/342/D)|Codeforces||Codeforces Round #199 (Div. 2)|8|\n|<ul><li>- [ ] Done</li></ul>|86|[Summer Earnings](http://codeforces.com/problemset/problem/333/E)|Codeforces||Codeforces Round #194 (Div. 1)|8|\n|<ul><li>- [ ] Done</li></ul>|87|[Memory for Arrays](http://codeforces.com/problemset/problem/309/C)|Codeforces||Croc Champ 2013 - Finals (online version, Div. 1)|8|\n|<ul><li>- [ ] Done</li></ul>|88|[The Minimum Number of Variables](http://codeforces.com/problemset/problem/279/D)|Codeforces||Codeforces Round #171 (Div. 2)|8|\n|<ul><li>- [ ] Done</li></ul>|89|[Two Sets](http://codeforces.com/problemset/problem/251/D)|Codeforces||Codeforces Round #153 (Div. 1)|9|\n|<ul><li>- [ ] Done</li></ul>|90|[Friends](http://codeforces.com/problemset/problem/241/B)|Codeforces||Bayan 2012-2013 Elimination Round (ACM ICPC Rules, English statements)|9|\n|<ul><li>- [ ] Done</li></ul>|91|[Quick Tortoise](http://codeforces.com/problemset/problem/232/E)|Codeforces||Codeforces Round #144 (Div. 1)|9|\n|<ul><li>- [ ] Done</li></ul>|92|[Bitonix' Patrol](http://codeforces.com/problemset/problem/217/D)|Codeforces||Codeforces Round #134 (Div. 1)|9|\n|<ul><li>- [ ] Done</li></ul>|93|[Polycarpus is Looking for Good Substrings](http://codeforces.com/problemset/problem/212/B)|Codeforces||VK Cup 2012 Finals (unofficial online-version)|9|\n|<ul><li>- [ ] Done</li></ul>|94|[Brand New Problem](http://codeforces.com/problemset/problem/201/D)|Codeforces||Codeforces Round #127 (Div. 1)|9|\n|<ul><li>- [ ] Done</li></ul>|95|[Garden](http://codeforces.com/problemset/problem/152/E)|Codeforces||Codeforces Round #108 (Div. 2)|9|\n|<ul><li>- [ ] Done</li></ul>|96|[Arrangement](http://codeforces.com/problemset/problem/107/C)|Codeforces||Codeforces Beta Round #83 (Div. 1 Only) & Codeforces Beta Round #83 (Div. 2 Only)|9|\n|<ul><li>- [ ] Done</li></ul>|97|[Two Subsequences](http://codeforces.com/problemset/problem/83/E)|Codeforces||Codeforces Beta Round #72 (Div. 1 Only)|9|\n|<ul><li>- [ ] Done</li></ul>|98|[Nuclear Fusion](http://codeforces.com/problemset/problem/71/E)|Codeforces||Codeforces Beta Round #65 (Div. 2)|9|\n|<ul><li>- [ ] Done</li></ul>|99|[Circling Round Treasures](http://codeforces.com/problemset/problem/375/C)|Codeforces||Codeforces Round #221 (Div. 1) & Codeforces Round #221 (Div. 2)|9|\n|<ul><li>- [ ] Done</li></ul>|100|[Gambling Nim](http://codeforces.com/problemset/problem/662/A)|Codeforces||CROC 2016 - Final Round [Private, For Onsite Finalists Only]|9|\n|<ul><li>- [ ] Done</li></ul>|101|[Sandy and Nuts](http://codeforces.com/problemset/problem/599/E)|Codeforces||Codeforces Round #332 (Div. 2)|9|\n|<ul><li>- [ ] Done</li></ul>|102|[Simplified Nonogram](http://codeforces.com/problemset/problem/534/F)|Codeforces||Codeforces Round #298 (Div. 2)|9|\n|<ul><li>- [ ] Done</li></ul>|103|[Misha and XOR](http://codeforces.com/problemset/problem/504/D)|Codeforces||Codeforces Round #285 (Div. 1)|9|\n|<ul><li>- [ ] Done</li></ul>|104|[Design Tutorial: Increase the Constraints](http://codeforces.com/problemset/problem/472/G)|Codeforces||Codeforces Round #270|9|\n|<ul><li>- [ ] Done</li></ul>|105|[Valera and Number](http://codeforces.com/problemset/problem/441/E)|Codeforces||Codeforces Round #252 (Div. 2)|9|\n|<ul><li>- [ ] Done</li></ul>|106|[Game with Strings](http://codeforces.com/problemset/problem/354/B)|Codeforces||Codeforces Round #206 (Div. 1) & Codeforces Round #206 (Div. 2)|9|\n|<ul><li>- [ ] Done</li></ul>|107|[Dasha and cyclic table](http://codeforces.com/problemset/problem/754/E)|Codeforces||Codeforces Round #390 (Div. 2)|9|\n|<ul><li>- [ ] Done</li></ul>|108|[Robot in Basement](http://codeforces.com/problemset/problem/97/D)|Codeforces||Yandex.Algorithm 2011 Finals|10|\n|<ul><li>- [ ] Done</li></ul>|109|[Mutation](http://codeforces.com/problemset/problem/76/C)|Codeforces||All-Ukrainian School Olympiad in Informatics|10|\n|<ul><li>- [ ] Done</li></ul>|110|[Boolean Function](http://codeforces.com/problemset/problem/582/E)|Codeforces||Codeforces Round #323 (Div. 1)|10|\n|<ul><li>- [ ] Done</li></ul>|111|[Party](http://codeforces.com/problemset/problem/575/C)|Codeforces||Bubble Cup 8 - Finals [Online Mirror]|10|\n|<ul><li>- [ ] Done</li></ul>|112|[Restoring Map](http://codeforces.com/problemset/problem/566/E)|Codeforces||VK Cup 2015 - Finals, online mirror|10|\n|<ul><li>- [ ] Done</li></ul>|113|[Vasily the Bear and Painting Square](http://codeforces.com/problemset/problem/336/E)|Codeforces||Codeforces Round #195 (Div. 2)|10|\n"
  },
  {
    "path": "categories/030. Matrix_Power/README.md",
    "content": "# 030. Matrix_Power\n\n\n| Checkbox | ID | Problem Name|Online Judge|Contest|Difficulty Level|\n|:---:|:---:|:---:|:---:|:---:|:---:|\n|<ul><li>- [ ] Done</li></ul>|1|[Tetrahedron](http://codeforces.com/problemset/problem/166/E)|Codeforces|Codeforces Round #113 (Div. 2)|1|\n|<ul><li>- [ ] Done</li></ul>|2|[Modular Fibonacci](https://uva.onlinejudge.org/index.php?option=onlinejudge&page=show_problem&problem=1170)|UVA||1|\n|<ul><li>- [ ] Done</li></ul>|3|[Counting Rabbits](http://www.spoj.com/problems/RABBIT1/)|SPOJ||1|\n|<ul><li>- [ ] Done</li></ul>|4|[Recursive Sequence](http://www.spoj.com/problems/SEQ/)|SPOJ||1|\n|<ul><li>- [ ] Done</li></ul>|5|[Mixtures](http://www.spoj.com/problems/MIXTURES/)|SPOJ||1|\n|<ul><li>- [ ] Done</li></ul>|6|[Fibonacci Sum](http://www.spoj.com/problems/FIBOSUM/)|SPOJ||1|\n|<ul><li>- [ ] Done</li></ul>|7|[The Knights Of The Round Table](https://uva.onlinejudge.org/index.php?option=onlinejudge&page=show_problem&problem=1136)|UVA||1|\n|<ul><li>- [ ] Done</li></ul>|8|[Jzzhu and Sequences](http://codeforces.com/problemset/problem/450/B)|Codeforces|Codeforces Round #257 (Div. 2)|1|\n|<ul><li>- [ ] Done</li></ul>|9|[Recursive Sequence (Version II)](http://www.spoj.com/problems/SPP/)|SPOJ||2|\n|<ul><li>- [ ] Done</li></ul>|10|[Yet another Number Sequence](https://uva.onlinejudge.org/index.php?option=onlinejudge&page=show_problem&problem=1630)|UVA||2|\n|<ul><li>- [ ] Done</li></ul>|11|[Euclids algorithm revisited ](http://www.spoj.com/problems/MAIN74/)|SPOJ||2|\n|<ul><li>- [ ] Done</li></ul>|12|[Decode the Strings](http://www.spoj.com/problems/PDECODE/)|SPOJ||2|\n|<ul><li>- [ ] Done</li></ul>|13|[Mr. Kitayuta's Gift](http://codeforces.com/problemset/problem/505/A)|Codeforces|Codeforces Round #286 (Div. 1) & Codeforces Round #286 (Div. 2) & Codeforces Round #286 (Div. 1) & Codeforces Round #286 (Div. 2)|2|\n|<ul><li>- [ ] Done</li></ul>|14|[Flibonakki](http://www.spoj.com/problems/FLIB/)|SPOJ||2|\n|<ul><li>- [ ] Done</li></ul>|15|[Summing Sums](http://www.spoj.com/problems/SUMSUMS/)|SPOJ||2|\n|<ul><li>- [ ] Done</li></ul>|16|[Factory](http://codeforces.com/problemset/problem/485/A)|Codeforces|Codeforces Round #276 (Div. 2)|2|\n|<ul><li>- [ ] Done</li></ul>|17|[End of Fun](http://www.spoj.com/problems/DCEPC12E/)|SPOJ||3|\n|<ul><li>- [ ] Done</li></ul>|18|[Quiz](http://codeforces.com/problemset/problem/337/C)|Codeforces|Codeforces Round #196 (Div. 2) & Codeforces Round #196 (Div. 1)|3|\n|<ul><li>- [ ] Done</li></ul>|19|[Text Generator](http://www.spoj.com/problems/GEN/)|SPOJ||3|\n|<ul><li>- [ ] Done</li></ul>|20|[Teobaldo's Trip](https://uva.onlinejudge.org/index.php?option=onlinejudge&page=show_problem&problem=1622)|UVA||3|\n|<ul><li>- [ ] Done</li></ul>|21|[Sum of Tetranacci numbers](http://www.spoj.com/problems/TETRAHRD/)|SPOJ||3|\n|<ul><li>- [ ] Done</li></ul>|22|[Ant](http://www.spoj.com/problems/PA06ANT/)|SPOJ||3|\n|<ul><li>- [ ] Done</li></ul>|23|[Recurrences](https://uva.onlinejudge.org/index.php?option=onlinejudge&page=show_problem&problem=1811)|UVA||3|\n|<ul><li>- [ ] Done</li></ul>|24|[How Many Calls?](https://uva.onlinejudge.org/index.php?option=onlinejudge&page=show_problem&problem=1459)|UVA||3|\n|<ul><li>- [ ] Done</li></ul>|25|[Barcode](http://codeforces.com/problemset/problem/225/C)|Codeforces|Codeforces Round #139 (Div. 2)|3|\n|<ul><li>- [ ] Done</li></ul>|26|[Number of quite different words](http://www.spoj.com/problems/NUMQDW/)|SPOJ||3|\n|<ul><li>- [ ] Done</li></ul>|27|[Contemplation! Algebra](https://uva.onlinejudge.org/index.php?option=onlinejudge&page=show_problem&problem=1596)|UVA||3|\n|<ul><li>- [ ] Done</li></ul>|28|[Plane Hopping](http://www.spoj.com/problems/PLHOP/)|SPOJ||3|\n|<ul><li>- [ ] Done</li></ul>|29|[Tribonacci](https://uva.onlinejudge.org/index.php?option=onlinejudge&page=show_problem&problem=3914)|UVA||3|\n|<ul><li>- [ ] Done</li></ul>|30|[Recurrence](http://www.spoj.com/problems/REC/)|SPOJ||3|\n|<ul><li>- [ ] Done</li></ul>|31|[Plant](http://codeforces.com/problemset/problem/185/A)|Codeforces|Codeforces Round #118 (Div. 1) & Codeforces Round #118 (Div. 2)|3|\n|<ul><li>- [ ] Done</li></ul>|32|[Fibonacci vs Polynomial](http://www.spoj.com/problems/PIBO/)|SPOJ||4|\n|<ul><li>- [ ] Done</li></ul>|33|[Number of Paths in the Empire](http://acm.sgu.ru/problem.php?contest=0&problem=407)|SGU||4|\n|<ul><li>- [ ] Done</li></ul>|34|[Iterated Linear Function](http://codeforces.com/problemset/problem/678/D)|Codeforces|Educational Codeforces Round 13|4|\n|<ul><li>- [ ] Done</li></ul>|35|[Power of Matrix](https://uva.onlinejudge.org/index.php?option=onlinejudge&page=show_problem&problem=2090)|UVA||4|\n|<ul><li>- [ ] Done</li></ul>|36|[R  Numbers](http://www.spoj.com/problems/ITRIX12E/)|SPOJ||4|\n|<ul><li>- [ ] Done</li></ul>|37|[Once Again...](http://codeforces.com/problemset/problem/582/B)|Codeforces|Codeforces Round #323 (Div. 1) & Codeforces Round #323 (Div. 2)|4|\n|<ul><li>- [ ] Done</li></ul>|38|[Experienced Endeavour](https://uva.onlinejudge.org/index.php?option=onlinejudge&page=show_problem&problem=2546)|UVA||5|\n|<ul><li>- [ ] Done</li></ul>|39|[Fantastic Sequence](https://uva.onlinejudge.org/index.php?option=onlinejudge&page=show_problem&problem=1695)|UVA||5|\n|<ul><li>- [ ] Done</li></ul>|40|[K-based Numbers. Version 3](http://acm.timus.ru/problem.aspx?space=1&num=1013)|Timus||5|\n|<ul><li>- [ ] Done</li></ul>|41|[Wet Shark and Blocks](http://codeforces.com/problemset/problem/621/E)|Codeforces|Codeforces Round #341 (Div. 2)|5|\n|<ul><li>- [ ] Done</li></ul>|42|[Life Game](http://www.spoj.com/problems/LIFEGAME/)|SPOJ||5|\n|<ul><li>- [ ] Done</li></ul>|43|[Jumbo Airlines](http://www.spoj.com/problems/AIRLINES/)|SPOJ||5|\n|<ul><li>- [ ] Done</li></ul>|44|[Stocks Prediction](http://www.spoj.com/problems/AMR10E/)|SPOJ||5|\n|<ul><li>- [ ] Done</li></ul>|45|[Finding Paths in Grid](https://uva.onlinejudge.org/index.php?option=onlinejudge&page=show_problem&problem=2481)|UVA||5|\n|<ul><li>- [ ] Done</li></ul>|46|[Four colors](http://www.spoj.com/problems/HS08FOUR/)|SPOJ||5|\n|<ul><li>- [ ] Done</li></ul>|47|[Life, the Universe, and Everything II](http://www.spoj.com/problems/RP/)|SPOJ||5|\n|<ul><li>- [ ] Done</li></ul>|48|[Okabe and El Psy Kongroo](http://codeforces.com/problemset/problem/821/E)|Codeforces|Codeforces Round #420 (Div. 2)|6|\n|<ul><li>- [ ] Done</li></ul>|49|[Text Generater II](http://www.spoj.com/problems/GEN2/)|SPOJ||6|\n|<ul><li>- [ ] Done</li></ul>|50|[Gremlins](http://www.spoj.com/problems/GREMLINS/)|SPOJ||6|\n|<ul><li>- [ ] Done</li></ul>|51|[Decoding Genome](http://codeforces.com/problemset/problem/222/E)|Codeforces|Codeforces Round #137 (Div. 2)|6|\n|<ul><li>- [ ] Done</li></ul>|52|[GukiZ and Binary Operations](http://codeforces.com/problemset/problem/551/D)|Codeforces|Codeforces Round #307 (Div. 2)|6|\n|<ul><li>- [ ] Done</li></ul>|53|[How many Knight Placing?](https://uva.onlinejudge.org/index.php?option=onlinejudge&page=show_problem&problem=2032)|UVA||6|\n|<ul><li>- [ ] Done</li></ul>|54|[Krypton Number System](https://uva.onlinejudge.org/index.php?option=onlinejudge&page=show_problem&problem=2698)|UVA||6|\n|<ul><li>- [ ] Done</li></ul>|55|[Pibonacci](http://www.spoj.com/problems/PIB/)|SPOJ||7|\n|<ul><li>- [ ] Done</li></ul>|56|[Axel and Marston in Bitland](http://codeforces.com/problemset/problem/780/F)|Codeforces|?????????? 2017 - ????? (?????? ??? ??????-??????????)|7|\n|<ul><li>- [ ] Done</li></ul>|57|[Darth Vader and Tree](http://codeforces.com/problemset/problem/514/E)|Codeforces|Codeforces Round #291 (Div. 2)|7|\n|<ul><li>- [ ] Done</li></ul>|58|[Dexterina’s Lab](http://codeforces.com/problemset/problem/717/D)|Codeforces|Bubble Cup 9 - Finals [Online Mirror]|7|\n|<ul><li>- [ ] Done</li></ul>|59|[Smile House](http://codeforces.com/problemset/problem/147/B)|Codeforces|Codeforces Testing Round #4|8|\n|<ul><li>- [ ] Done</li></ul>|60|[Flights for Regular Customers](http://codeforces.com/problemset/problem/576/D)|Codeforces|Codeforces Round #319 (Div. 1)|8|\n|<ul><li>- [ ] Done</li></ul>|61|[Anniversary](http://codeforces.com/problemset/problem/226/C)|Codeforces|Codeforces Round #140 (Div. 1) & Codeforces Round #140 (Div. 2)|8|\n|<ul><li>- [ ] Done</li></ul>|62|[Ignore the Blocks](https://uva.onlinejudge.org/index.php?option=onlinejudge&page=show_problem&problem=2841)|UVA||8|\n|<ul><li>- [ ] Done</li></ul>|63|[Hamming Distance](http://codeforces.com/problemset/problem/193/C)|Codeforces|Codeforces Round #122 (Div. 1) & Codeforces Round #122 (Div. 2)|8|\n|<ul><li>- [ ] Done</li></ul>|64|[Bear in the Field](http://codeforces.com/problemset/problem/385/E)|Codeforces|Codeforces Round #226 (Div. 2)|8|\n|<ul><li>- [ ] Done</li></ul>|65|[Jeff and Brackets](http://codeforces.com/problemset/problem/351/C)|Codeforces|Codeforces Round #204 (Div. 1) & Codeforces Round #204 (Div. 2)|8|\n|<ul><li>- [ ] Done</li></ul>|66|[Turtles](http://codeforces.com/problemset/problem/348/D)|Codeforces|Codeforces Round #202 (Div. 1)|8|\n|<ul><li>- [ ] Done</li></ul>|67|[Design Tutorial: Change the Goal](http://codeforces.com/problemset/problem/472/F)|Codeforces|Codeforces Round #270|9|\n|<ul><li>- [ ] Done</li></ul>|68|[Little Pony and Elements of Harmony](http://codeforces.com/problemset/problem/453/D)|Codeforces|Codeforces Round #259 (Div. 1)|9|\n|<ul><li>- [ ] Done</li></ul>|69|[Museum](http://codeforces.com/problemset/problem/113/D)|Codeforces|Codeforces Beta Round #86 (Div. 1 Only)|9|\n|<ul><li>- [ ] Done</li></ul>|70|[Fibonotci](http://codeforces.com/problemset/problem/575/A)|Codeforces|Bubble Cup 8 - Finals [Online Mirror]|9|\n|<ul><li>- [ ] Done</li></ul>|71|[Permutations](http://codeforces.com/problemset/problem/736/D)|Codeforces|Codeforces Round #382 (Div. 1)|9|\n|<ul><li>- [ ] Done</li></ul>|72|[Crime Management](http://codeforces.com/problemset/problem/107/D)|Codeforces|Codeforces Beta Round #83 (Div. 1 Only)|9|\n|<ul><li>- [ ] Done</li></ul>|73|[Vasya and Shifts](http://codeforces.com/problemset/problem/832/E)|Codeforces|Codeforces Round #425 (Div. 2)|9|\n|<ul><li>- [ ] Done</li></ul>|74|[Fibonacci Number](http://codeforces.com/problemset/problem/193/E)|Codeforces|Codeforces Round #122 (Div. 1)|9|\n|<ul><li>- [ ] Done</li></ul>|75|[Flags](http://codeforces.com/problemset/problem/93/D)|Codeforces|Codeforces Beta Round #76 (Div. 1 Only)|9|\n|<ul><li>- [ ] Done</li></ul>|76|[Gambling Nim](http://codeforces.com/problemset/problem/662/A)|Codeforces|CROC 2016 - Final Round [Private, For Onsite Finalists Only]|9|\n|<ul><li>- [ ] Done</li></ul>|77|[Yet Another Number Sequence](http://codeforces.com/problemset/problem/392/C)|Codeforces|Codeforces Round #230 (Div. 1) & Codeforces Round #230 (Div. 2)|9|\n|<ul><li>- [ ] Done</li></ul>|78|[Stairs and Lines](http://codeforces.com/problemset/problem/498/E)|Codeforces|Codeforces Round #284 (Div. 1)|9|\n|<ul><li>- [ ] Done</li></ul>|79|[Mushroom Gnomes](http://codeforces.com/problemset/problem/60/E)|Codeforces|Codeforces Beta Round #56|9|\n|<ul><li>- [ ] Done</li></ul>|80|[Strange Calculation and Cats](http://codeforces.com/problemset/problem/593/E)|Codeforces|Codeforces Round #329 (Div. 2)|9|\n|<ul><li>- [ ] Done</li></ul>|81|[Wizards and Bets](http://codeforces.com/problemset/problem/167/E)|Codeforces|Codeforces Round #114 (Div. 1)|9|\n|<ul><li>- [ ] Done</li></ul>|82|[Pentagon](http://codeforces.com/problemset/problem/51/E)|Codeforces|Codeforces Beta Round #48|9|\n|<ul><li>- [ ] Done</li></ul>|83|[Mirror Box](http://codeforces.com/problemset/problem/578/F)|Codeforces|Codeforces Round #320 (Div. 1) [Bayan Thanks-Round]|10|\n|<ul><li>- [ ] Done</li></ul>|84|[Berland Traffic](http://codeforces.com/problemset/problem/267/C)|Codeforces|Codeforces Testing Round #5|10|\n|<ul><li>- [ ] Done</li></ul>|85|[DZY Loves Bridges](http://codeforces.com/problemset/problem/446/E)|Codeforces|Codeforces Round #255 (Div. 1)|10|\n|<ul><li>- [ ] Done</li></ul>|86|[DZY Loves Games](http://codeforces.com/problemset/problem/446/D)|Codeforces|Codeforces Round #255 (Div. 1)|10|\n|<ul><li>- [ ] Done</li></ul>|87|[Fibonacci Strings](http://codeforces.com/problemset/problem/177/G2)|Codeforces|ABBYY Cup 2.0 - Easy|10|\n|<ul><li>- [ ] Done</li></ul>|88|[Long sequence](http://codeforces.com/problemset/problem/86/E)|Codeforces|Yandex.Algorithm 2011 Round 2|10|\n|<ul><li>- [ ] Done</li></ul>|89|[Combining Slimes](http://codeforces.com/problemset/problem/618/G)|Codeforces|Wunder Fund Round 2016 (Div. 1 + Div. 2 combined)|10|\n|<ul><li>- [ ] Done</li></ul>|90|[Subsequences Return](http://codeforces.com/problemset/problem/497/E)|Codeforces|Codeforces Round #283 (Div. 1)|10|\n"
  },
  {
    "path": "categories/031. games/README.md",
    "content": "# 031. games\n\n\n| Checkbox | ID | Problem Name|Online Judge|Contest|Difficulty Level|\n|:---:|:---:|:---:|:---:|:---:|:---:|\n|<ul><li>- [ ] Done</li></ul>|1|[Little Girl and Game](http://codeforces.com/problemset/problem/276/B)|Codeforces|Codeforces Round #169 (Div. 2)|1|\n|<ul><li>- [ ] Done</li></ul>|2|[WHAT A CO-ACCIDENT](http://www.spoj.com/problems/SYNC13C/)|SPOJ||1|\n|<ul><li>- [ ] Done</li></ul>|3|[M&M Game](http://www.spoj.com/problems/MMMGAME/)|SPOJ||1|\n|<ul><li>- [ ] Done</li></ul>|4|[Sasha and Sticks](http://codeforces.com/problemset/problem/832/A)|Codeforces|Codeforces Round #425 (Div. 2)|1|\n|<ul><li>- [ ] Done</li></ul>|5|[Spider Man](http://codeforces.com/problemset/problem/705/B)|Codeforces|Codeforces Round #366 (Div. 2)|1|\n|<ul><li>- [ ] Done</li></ul>|6|[A Game with Numbers](http://www.spoj.com/problems/NGM/)|SPOJ||1|\n|<ul><li>- [ ] Done</li></ul>|7|[Hubulullu](http://www.spoj.com/problems/HUBULLU/)|SPOJ||1|\n|<ul><li>- [ ] Done</li></ul>|8|[Godsend](http://codeforces.com/problemset/problem/841/B)|Codeforces|Codeforces Round #429 (Div. 2)|1|\n|<ul><li>- [ ] Done</li></ul>|9|[Coins Game](http://www.spoj.com/problems/MCOINS/)|SPOJ||1|\n|<ul><li>- [ ] Done</li></ul>|10|[DOTA HEROES](http://www.spoj.com/problems/DOTAA/)|SPOJ||1|\n|<ul><li>- [ ] Done</li></ul>|11|[Alice and Bob](http://codeforces.com/problemset/problem/346/A)|Codeforces|Codeforces Round #201 (Div. 1) & Codeforces Round #201 (Div. 2)|2|\n|<ul><li>- [ ] Done</li></ul>|12|[The Game](http://www.spoj.com/problems/QCJ3/)|SPOJ||2|\n|<ul><li>- [ ] Done</li></ul>|13|[Game](http://codeforces.com/problemset/problem/630/R)|Codeforces|Experimental Educational Round: VolBIT Formulas Blitz|2|\n|<ul><li>- [ ] Done</li></ul>|14|[Dinner with Emma](http://codeforces.com/problemset/problem/616/B)|Codeforces|Educational Codeforces Round 5|2|\n|<ul><li>- [ ] Done</li></ul>|15|[Vasya and Chess](http://codeforces.com/problemset/problem/493/D)|Codeforces|Codeforces Round #281 (Div. 2)|2|\n|<ul><li>- [ ] Done</li></ul>|16|[Matrix Game](http://www.spoj.com/problems/MATGAME/)|SPOJ||2|\n|<ul><li>- [ ] Done</li></ul>|17|[Integer Game](https://uva.onlinejudge.org/index.php?option=onlinejudge&page=show_problem&problem=2484)|UVA||2|\n|<ul><li>- [ ] Done</li></ul>|18|[Tic-tac-toe](http://codeforces.com/problemset/problem/3/C)|Codeforces|Codeforces Beta Round #3|3|\n|<ul><li>- [ ] Done</li></ul>|19|[Playing Cubes](http://codeforces.com/problemset/problem/257/B)|Codeforces|Codeforces Round #159 (Div. 2)|3|\n|<ul><li>- [ ] Done</li></ul>|20|[The Stones Game](p?ID=8)|A2 Online Judge||3|\n|<ul><li>- [ ] Done</li></ul>|21|[Moving Pebbles](http://www.spoj.com/problems/PEBBMOV/)|SPOJ||3|\n|<ul><li>- [ ] Done</li></ul>|22|[Find the Winning Move](https://uva.onlinejudge.org/index.php?option=onlinejudge&page=show_problem&problem=1052)|UVA||3|\n|<ul><li>- [ ] Done</li></ul>|23|[Win or Freeze](http://codeforces.com/problemset/problem/150/A)|Codeforces|Codeforces Round #107 (Div. 1) & Codeforces Round #107 (Div. 2)|3|\n|<ul><li>- [ ] Done</li></ul>|24|[Exclusively Edible](https://uva.onlinejudge.org/index.php?option=onlinejudge&page=show_problem&problem=2286)|UVA||3|\n|<ul><li>- [ ] Done</li></ul>|25|[Special Nim Game](http://www.spoj.com/problems/NIMGAME/)|SPOJ||3|\n|<ul><li>- [ ] Done</li></ul>|26|[TRIVIADOR](http://www.spoj.com/problems/TWOKINGS/)|SPOJ||3|\n|<ul><li>- [ ] Done</li></ul>|27|[Stone Removing Game](http://www.spoj.com/problems/REMGAME/)|SPOJ||4|\n|<ul><li>- [ ] Done</li></ul>|28|[Naming Company](http://codeforces.com/problemset/problem/794/C)|Codeforces|Tinkoff Challenge - Final Round (Codeforces Round #414, rated, Div. 1 + Div. 2)|4|\n|<ul><li>- [ ] Done</li></ul>|29|[Chomp](http://www.spoj.com/problems/CLK/)|SPOJ||4|\n|<ul><li>- [ ] Done</li></ul>|30|[Plate Game](http://codeforces.com/problemset/problem/197/A)|Codeforces|Codeforces Round #124 (Div. 2)|4|\n|<ul><li>- [ ] Done</li></ul>|31|[A Lot of Games](http://codeforces.com/problemset/problem/455/B)|Codeforces|Codeforces Round #260 (Div. 1) & Codeforces Round #260 (Div. 2)|4|\n|<ul><li>- [ ] Done</li></ul>|32|[Bag of mice](http://codeforces.com/problemset/problem/148/D)|Codeforces|Codeforces Round #105 (Div. 2)|4|\n|<ul><li>- [ ] Done</li></ul>|33|[Board Game](http://codeforces.com/problemset/problem/533/C)|Codeforces|VK Cup 2015 - Round 2 (unofficial online mirror, Div. 1 only)|5|\n|<ul><li>- [ ] Done</li></ul>|34|[TRIVIADOR](http://www.spoj.com/problems/QWERTY04/)|SPOJ||5|\n|<ul><li>- [ ] Done</li></ul>|35|[Berzerk](http://codeforces.com/problemset/problem/786/A)|Codeforces|Codeforces Round #406 (Div. 1) & Codeforces Round #406 (Div. 2)|5|\n|<ul><li>- [ ] Done</li></ul>|36|[Put Knight!](http://codeforces.com/problemset/problem/120/E)|Codeforces|School Regional Team Contest, Saratov, 2011|5|\n|<ul><li>- [ ] Done</li></ul>|37|[Team Nim](http://www.spoj.com/problems/TEAMNIM/)|SPOJ||5|\n|<ul><li>- [ ] Done</li></ul>|38|[Weird Game](http://codeforces.com/problemset/problem/293/A)|Codeforces|Croc Champ 2013 - Round 2|5|\n|<ul><li>- [ ] Done</li></ul>|39|[The Game Of Parity](http://codeforces.com/problemset/problem/549/C)|Codeforces|Looksery Cup 2015|5|\n|<ul><li>- [ ] Done</li></ul>|40|[Fox and Card Game](http://codeforces.com/problemset/problem/388/C)|Codeforces|Codeforces Round #228 (Div. 1) & Codeforces Round #228 (Div. 2)|5|\n|<ul><li>- [ ] Done</li></ul>|41|[GAMING ARENA](http://www.spoj.com/problems/GAMARENA/)|SPOJ||6|\n|<ul><li>- [ ] Done</li></ul>|42|[Cubes](http://codeforces.com/problemset/problem/520/D)|Codeforces|Codeforces Round #295 (Div. 2) & Codeforces Round #295 (Div. 1)|6|\n|<ul><li>- [ ] Done</li></ul>|43|[Zero-One](http://codeforces.com/problemset/problem/135/C)|Codeforces|Codeforces Beta Round #97 (Div. 1) & Codeforces Beta Round #97 (Div. 2)|6|\n|<ul><li>- [ ] Done</li></ul>|44|[Ithea Plays With Chtholly](http://codeforces.com/problemset/problem/896/B)|Codeforces|Codeforces Round #449 (Div. 1) & Codeforces Round #449 (Div. 2)|6|\n|<ul><li>- [ ] Done</li></ul>|45|[Lieges of Legendre](http://codeforces.com/problemset/problem/603/C)|Codeforces|Codeforces Round #334 (Div. 1) & Codeforces Round #334 (Div. 2)|6|\n|<ul><li>- [ ] Done</li></ul>|46|[Baklawa](p?ID=424)|A2 Online Judge||6|\n|<ul><li>- [ ] Done</li></ul>|47|[Interesting Game](http://codeforces.com/problemset/problem/87/C)|Codeforces|Codeforces Beta Round #73 (Div. 1 Only) & Codeforces Beta Round #73 (Div. 2 Only)|6|\n|<ul><li>- [ ] Done</li></ul>|48|[Warrior and Archer](http://codeforces.com/problemset/problem/594/A)|Codeforces|Codeforces Round #330 (Div. 1) & Codeforces Round #330 (Div. 2)|6|\n|<ul><li>- [ ] Done</li></ul>|49|[Yet Another Number Game](http://codeforces.com/problemset/problem/282/D)|Codeforces|Codeforces Round #173 (Div. 2)|6|\n|<ul><li>- [ ] Done</li></ul>|50|[Beaver Game](http://codeforces.com/problemset/problem/78/C)|Codeforces|Codeforces Beta Round #70 (Div. 2)|6|\n|<ul><li>- [ ] Done</li></ul>|51|[Beautiful Decomposition](http://codeforces.com/problemset/problem/279/E)|Codeforces|Codeforces Round #171 (Div. 2)|6|\n|<ul><li>- [ ] Done</li></ul>|52|[Train](http://codeforces.com/problemset/problem/74/B)|Codeforces|Codeforces Beta Round #68|6|\n|<ul><li>- [ ] Done</li></ul>|53|[Industrial Nim](http://codeforces.com/problemset/problem/15/C)|Codeforces|Codeforces Beta Round #15|6|\n|<ul><li>- [ ] Done</li></ul>|54|[Dot](http://codeforces.com/problemset/problem/69/D)|Codeforces|Codeforces Beta Round #63 (Div. 2)|7|\n|<ul><li>- [ ] Done</li></ul>|55|[Heroes of Might and Magic](http://acm.timus.ru/problem.aspx?space=1&num=1240)|Timus||7|\n|<ul><li>- [ ] Done</li></ul>|56|[Furlo and Rublo and Game](http://codeforces.com/problemset/problem/255/E)|Codeforces|Codeforces Round #156 (Div. 2) & Codeforces Round #156 (Div. 1)|7|\n|<ul><li>- [ ] Done</li></ul>|57|[Pie or die](http://codeforces.com/problemset/problem/55/C)|Codeforces|Codeforces Beta Round #51|7|\n|<ul><li>- [ ] Done</li></ul>|58|[Game with Powers](http://codeforces.com/problemset/problem/317/D)|Codeforces|Codeforces Round #188 (Div. 1)|7|\n|<ul><li>- [ ] Done</li></ul>|59|[Sagheer and Apple Tree](http://codeforces.com/problemset/problem/812/E)|Codeforces|Codeforces Round #417 (Div. 2)|7|\n|<ul><li>- [ ] Done</li></ul>|60|[Captains Mode](http://codeforces.com/problemset/problem/377/C)|Codeforces|Codeforces Round #222 (Div. 1) & Codeforces Round #222 (Div. 2)|7|\n|<ul><li>- [ ] Done</li></ul>|61|[Cactuses](http://acm.timus.ru/problem.aspx?space=1&num=1610)|Timus||8|\n|<ul><li>- [ ] Done</li></ul>|62|[Sweets Game](http://codeforces.com/problemset/problem/63/E)|Codeforces|Codeforces Beta Round #59 (Div. 2)|8|\n|<ul><li>- [ ] Done</li></ul>|63|[More Reclamation](http://codeforces.com/problemset/problem/335/C)|Codeforces|MemSQL start[c]up Round 2 - online version|8|\n|<ul><li>- [ ] Done</li></ul>|64|[Two Pawns and One King](http://acm.timus.ru/problem.aspx?space=1&num=1216)|Timus||8|\n|<ul><li>- [ ] Done</li></ul>|65|[Playing with String](http://codeforces.com/problemset/problem/305/E)|Codeforces|Codeforces Round #184 (Div. 2)|8|\n|<ul><li>- [ ] Done</li></ul>|66|[Wizards and Numbers](http://codeforces.com/problemset/problem/167/C)|Codeforces|Codeforces Round #114 (Div. 1) & Codeforces Round #114 (Div. 2)|8|\n|<ul><li>- [ ] Done</li></ul>|67|[What Has Dirichlet Got to Do with That?](http://codeforces.com/problemset/problem/39/E)|Codeforces|School Team Contest #1 (Winter Computer School 2010/11)|8|\n|<ul><li>- [ ] Done</li></ul>|68|[New Game with a Chess Piece](http://codeforces.com/problemset/problem/36/D)|Codeforces|Codeforces Beta Round #36|8|\n|<ul><li>- [ ] Done</li></ul>|69|[Game](http://codeforces.com/problemset/problem/277/C)|Codeforces|Codeforces Round #170 (Div. 1) & Codeforces Round #170 (Div. 2)|8|\n|<ul><li>- [ ] Done</li></ul>|70|[Chapaev](http://acm.timus.ru/problem.aspx?space=1&num=1163)|Timus||8|\n|<ul><li>- [ ] Done</li></ul>|71|[Help Shrek and Donkey 2](http://codeforces.com/problemset/problem/142/D)|Codeforces|Codeforces Round #102 (Div. 1)|9|\n|<ul><li>- [ ] Done</li></ul>|72|[Game with Strings](http://codeforces.com/problemset/problem/354/B)|Codeforces|Codeforces Round #206 (Div. 1) & Codeforces Round #206 (Div. 2)|9|\n|<ul><li>- [ ] Done</li></ul>|73|[World of Darkraft](http://codeforces.com/problemset/problem/138/D)|Codeforces|Codeforces Beta Round #99 (Div. 1)|9|\n|<ul><li>- [ ] Done</li></ul>|74|[Dima and Game](http://codeforces.com/problemset/problem/273/E)|Codeforces|Codeforces Round #167 (Div. 1)|9|\n|<ul><li>- [ ] Done</li></ul>|75|[Ivan the Fool VS Gorynych the Dragon](http://codeforces.com/problemset/problem/48/E)|Codeforces|School Personal Contest #3 (Winter Computer School 2010/11) - Codeforces Beta Round #45 (ACM-ICPC Rules)|9|\n|<ul><li>- [ ] Done</li></ul>|76|[Flatland Fencing](http://codeforces.com/problemset/problem/154/D)|Codeforces|Codeforces Round #109 (Div. 1)|9|\n|<ul><li>- [ ] Done</li></ul>|77|[Smart Boy](http://codeforces.com/problemset/problem/38/F)|Codeforces|School Personal Contest #1 (Winter Computer School 2010/11) - Codeforces Beta Round #38 (ACM-ICPC Rules)|9|\n|<ul><li>- [ ] Done</li></ul>|78|[Tavas in Kansas](http://codeforces.com/problemset/problem/536/D)|Codeforces|Codeforces Round #299 (Div. 1)|9|\n|<ul><li>- [ ] Done</li></ul>|79|[Sharti](http://codeforces.com/problemset/problem/494/E)|Codeforces|Codeforces Round #282 (Div. 1)|10|\n|<ul><li>- [ ] Done</li></ul>|80|[Help Shrek and Donkey](http://codeforces.com/problemset/problem/98/E)|Codeforces|Codeforces Beta Round #78 (Div. 1 Only)|10|\n|<ul><li>- [ ] Done</li></ul>|81|[An easy problem about trees](http://codeforces.com/problemset/problem/457/F)|Codeforces|MemSQL Start[c]UP 2.0 - Round 2|10|\n"
  },
  {
    "path": "categories/032. MST_Disjoint_sets_SCC/README.md",
    "content": "# 032. MST_Disjoint_sets_SCC\n\n\n| Checkbox | ID | Problem Name|Online Judge|Year|Contest|Difficulty Level|\n|:---:|:---:|:---:|:---:|:---:|:---:|:---:|\n|<ul><li>- [ ] Done</li></ul>|1|[Connect the Campus](https://uva.onlinejudge.org/index.php?option=onlinejudge&page=show_problem&problem=1338)|UVA|||1|\n|<ul><li>- [ ] Done</li></ul>|2|[Ubiquitous Religions](https://uva.onlinejudge.org/index.php?option=onlinejudge&page=show_problem&problem=1524)|UVA|||1|\n|<ul><li>- [ ] Done</li></ul>|3|[Arctic Network](https://uva.onlinejudge.org/index.php?option=onlinejudge&page=show_problem&problem=1310)|UVA|||1|\n|<ul><li>- [ ] Done</li></ul>|4|[ACM Contest and Blackout](https://uva.onlinejudge.org/index.php?option=onlinejudge&page=show_problem&problem=1541)|UVA|||1|\n|<ul><li>- [ ] Done</li></ul>|5|[Bytelandian Blingors Network](http://www.spoj.com/problems/BLINNET/)|SPOJ|||1|\n|<ul><li>- [ ] Done</li></ul>|6|[Frogger](https://uva.onlinejudge.org/index.php?option=onlinejudge&page=show_problem&problem=475)|UVA|||1|\n|<ul><li>- [ ] Done</li></ul>|7|[Kids Love Candies](p?ID=17)|A2 Online Judge|||1|\n|<ul><li>- [ ] Done</li></ul>|8|[The Bottom of a Graph](http://www.spoj.com/problems/BOTTOM/)|SPOJ|||1|\n|<ul><li>- [ ] Done</li></ul>|9|[Freckles](https://uva.onlinejudge.org/index.php?option=onlinejudge&page=show_problem&problem=975)|UVA|||1|\n|<ul><li>- [ ] Done</li></ul>|10|[Capital City](http://www.spoj.com/problems/CAPCITY/)|SPOJ|||1|\n|<ul><li>- [ ] Done</li></ul>|11|[Calling Circles](https://uva.onlinejudge.org/index.php?option=onlinejudge&page=show_problem&problem=183)|UVA|||1|\n|<ul><li>- [ ] Done</li></ul>|12|[Re-connecting Computer Sites](https://uva.onlinejudge.org/index.php?option=onlinejudge&page=show_problem&problem=849)|UVA|||1|\n|<ul><li>- [ ] Done</li></ul>|13|[Heavy Cargo](https://uva.onlinejudge.org/index.php?option=onlinejudge&page=show_problem&problem=485)|UVA|||1|\n|<ul><li>- [ ] Done</li></ul>|14|[A Bug&#8217;s Life](http://www.spoj.com/problems/BUGLIFE/)|SPOJ|||1|\n|<ul><li>- [ ] Done</li></ul>|15|[Cobbled streets](http://www.spoj.com/problems/CSTREET/)|SPOJ|||1|\n|<ul><li>- [ ] Done</li></ul>|16|[Fake tournament](http://www.spoj.com/problems/TOUR/)|SPOJ|||1|\n|<ul><li>- [ ] Done</li></ul>|17|[Virtual Friends](https://uva.onlinejudge.org/index.php?option=onlinejudge&page=show_problem&problem=2498)|UVA|||1|\n|<ul><li>- [ ] Done</li></ul>|18|[Dark roads](https://uva.onlinejudge.org/index.php?option=onlinejudge&page=show_problem&problem=2678)|UVA|||1|\n|<ul><li>- [ ] Done</li></ul>|19|[Network Connections](https://uva.onlinejudge.org/index.php?option=onlinejudge&page=show_problem&problem=734)|UVA|||1|\n|<ul><li>- [ ] Done</li></ul>|20|[Herding](http://www.spoj.com/problems/HERDING/)|SPOJ|||1|\n|<ul><li>- [ ] Done</li></ul>|21|[Dominos](https://uva.onlinejudge.org/index.php?option=onlinejudge&page=show_problem&problem=2499)|UVA|||1|\n|<ul><li>- [ ] Done</li></ul>|22|[Graph Connectivity](https://uva.onlinejudge.org/index.php?option=onlinejudge&page=show_problem&problem=400)|UVA|||1|\n|<ul><li>- [ ] Done</li></ul>|23|[The Benefactor](http://www.spoj.com/problems/BENEFACT/)|SPOJ|||1|\n|<ul><li>- [ ] Done</li></ul>|24|[Friends](https://uva.onlinejudge.org/index.php?option=onlinejudge&page=show_problem&problem=1549)|UVA|||1|\n|<ul><li>- [ ] Done</li></ul>|25|[Audiophobia](https://uva.onlinejudge.org/index.php?option=onlinejudge&page=show_problem&problem=989)|UVA|||1|\n|<ul><li>- [ ] Done</li></ul>|26|[Dragon of Loowater](https://uva.onlinejudge.org/index.php?option=onlinejudge&page=show_problem&problem=2267)|UVA|||1|\n|<ul><li>- [ ] Done</li></ul>|27|[The Tourist Guide](https://uva.onlinejudge.org/index.php?option=onlinejudge&page=show_problem&problem=1040)|UVA|||1|\n|<ul><li>- [ ] Done</li></ul>|28|[Fix the Pond](https://icpcarchive.ecs.baylor.edu/index.php?option=onlinejudge&page=show_problem&problem=4147)|Live Archive|2012|Latin America|2|\n|<ul><li>- [ ] Done</li></ul>|29|[Airports](https://uva.onlinejudge.org/index.php?option=onlinejudge&page=show_problem&problem=2833)|UVA|||2|\n|<ul><li>- [ ] Done</li></ul>|30|[Highways](https://uva.onlinejudge.org/index.php?option=onlinejudge&page=show_problem&problem=1088)|UVA|||2|\n|<ul><li>- [ ] Done</li></ul>|31|[Reliable Nets](http://www.spoj.com/problems/RELINETS/)|SPOJ|||2|\n|<ul><li>- [ ] Done</li></ul>|32|[Nature](https://uva.onlinejudge.org/index.php?option=onlinejudge&page=show_problem&problem=1626)|UVA|||2|\n|<ul><li>- [ ] Done</li></ul>|33|[True Friends](http://www.spoj.com/problems/TFRIENDS/)|SPOJ|||2|\n|<ul><li>- [ ] Done</li></ul>|34|[Driving Range](https://uva.onlinejudge.org/index.php?option=onlinejudge&page=show_problem&problem=2957)|UVA|||2|\n|<ul><li>- [ ] Done</li></ul>|35|[Is There A Second Way Left?](https://uva.onlinejudge.org/index.php?option=onlinejudge&page=show_problem&problem=1403)|UVA|||2|\n|<ul><li>- [ ] Done</li></ul>|36|[Cost](http://www.spoj.com/problems/KOICOST/)|SPOJ|||2|\n|<ul><li>- [ ] Done</li></ul>|37|[Money Matters](https://uva.onlinejudge.org/index.php?option=onlinejudge&page=show_problem&problem=2737)|UVA|||2|\n|<ul><li>- [ ] Done</li></ul>|38|[Come and Go](https://uva.onlinejudge.org/index.php?option=onlinejudge&page=show_problem&problem=2938)|UVA|||2|\n|<ul><li>- [ ] Done</li></ul>|39|[Network](http://acm.tju.edu.cn/toj/showp3499.html)|TJU|||2|\n|<ul><li>- [ ] Done</li></ul>|40|[Rings and Glue](https://uva.onlinejudge.org/index.php?option=onlinejudge&page=show_problem&problem=1242)|UVA|||2|\n|<ul><li>- [ ] Done</li></ul>|41|[Traffic Flow](https://uva.onlinejudge.org/index.php?option=onlinejudge&page=show_problem&problem=1783)|UVA|||2|\n|<ul><li>- [ ] Done</li></ul>|42|[Heavy Cargo](http://acm.tju.edu.cn/toj/showp1172.html)|TJU|||2|\n|<ul><li>- [ ] Done</li></ul>|43|[Fibonacci Tree](https://icpcarchive.ecs.baylor.edu/index.php?option=onlinejudge&page=show_problem&problem=4551)|Live Archive|2013|Asia - Chengdu|2|\n|<ul><li>- [ ] Done</li></ul>|44|[War](https://uva.onlinejudge.org/index.php?option=onlinejudge&page=show_problem&problem=1099)|UVA|||2|\n|<ul><li>- [ ] Done</li></ul>|45|[Transportation system.](https://uva.onlinejudge.org/index.php?option=onlinejudge&page=show_problem&problem=2169)|UVA|||2|\n|<ul><li>- [ ] Done</li></ul>|46|[Lighting Away](https://uva.onlinejudge.org/index.php?option=onlinejudge&page=show_problem&problem=2870)|UVA|||2|\n|<ul><li>- [ ] Done</li></ul>|47|[Freckles](http://acm.tju.edu.cn/toj/showp1348.html)|TJU|||2|\n|<ul><li>- [ ] Done</li></ul>|48|[IP-TV](https://uva.onlinejudge.org/index.php?option=onlinejudge&page=show_problem&problem=3615)|UVA|||2|\n|<ul><li>- [ ] Done</li></ul>|49|[Highways](http://acm.tju.edu.cn/toj/showp2288.html)|TJU|||2|\n|<ul><li>- [ ] Done</li></ul>|50|[Bus Problem](https://icpcarchive.ecs.baylor.edu/index.php?option=onlinejudge&page=show_problem&problem=5013)|Live Archive|2014|Asia - Taichung|2|\n|<ul><li>- [ ] Done</li></ul>|51|[Heavy Cycle Edges](https://uva.onlinejudge.org/index.php?option=onlinejudge&page=show_problem&problem=2847)|UVA|||2|\n|<ul><li>- [ ] Done</li></ul>|52|[Strange Food Chain](http://www.spoj.com/problems/CHAIN/)|SPOJ|||2|\n|<ul><li>- [ ] Done</li></ul>|53|[Buy Car](http://acm.tju.edu.cn/toj/showp3518.html)|TJU|||2|\n|<ul><li>- [ ] Done</li></ul>|54|[Expensive subway](https://uva.onlinejudge.org/index.php?option=onlinejudge&page=show_problem&problem=2757)|UVA|||2|\n|<ul><li>- [ ] Done</li></ul>|55|[Corporative Network](http://www.spoj.com/problems/CORNET/)|SPOJ|||2|\n|<ul><li>- [ ] Done</li></ul>|56|[Proving Equivalences](http://www.spoj.com/problems/PMATRIX/)|SPOJ|||3|\n|<ul><li>- [ ] Done</li></ul>|57|[The Dragon of Loowater](http://poj.org/problem?id=3646)|PKU|||3|\n|<ul><li>- [ ] Done</li></ul>|58|[Almost Union-Find](https://uva.onlinejudge.org/index.php?option=onlinejudge&page=show_problem&problem=3138)|UVA|||3|\n|<ul><li>- [ ] Done</li></ul>|59|[Madrids One Way Streets](http://www.spoj.com/problems/MOWS/)|SPOJ|||3|\n|<ul><li>- [ ] Done</li></ul>|60|[Oreon](http://acm.tju.edu.cn/toj/showp2531.html)|TJU|||3|\n|<ul><li>- [ ] Done</li></ul>|61|[Square dance](http://www.spoj.com/problems/SQDANCE/)|SPOJ|||3|\n|<ul><li>- [ ] Done</li></ul>|62|[X-Plosives](https://uva.onlinejudge.org/index.php?option=onlinejudge&page=show_problem&problem=3601)|UVA|||3|\n|<ul><li>- [ ] Done</li></ul>|63|[Oreon](https://uva.onlinejudge.org/index.php?option=onlinejudge&page=show_problem&problem=3649)|UVA|||3|\n|<ul><li>- [ ] Done</li></ul>|64|[Anti Brute Force Lock](https://uva.onlinejudge.org/index.php?option=onlinejudge&page=show_problem&problem=3676)|UVA|||3|\n|<ul><li>- [ ] Done</li></ul>|65|[RACING](https://uva.onlinejudge.org/index.php?option=onlinejudge&page=show_problem&problem=3675)|UVA|||3|\n|<ul><li>- [ ] Done</li></ul>|66|[Killing Aliens in Borg Maze](https://uva.onlinejudge.org/index.php?option=onlinejudge&page=show_problem&problem=1248)|UVA|||3|\n|<ul><li>- [ ] Done</li></ul>|67|[Fatawy](http://www.spoj.com/problems/FATAWY/)|SPOJ|||4|\n|<ul><li>- [ ] Done</li></ul>|68|[Count Minimum Spanning Trees](http://www.spoj.com/problems/MSTS/)|SPOJ|||4|\n|<ul><li>- [ ] Done</li></ul>|69|[Civilization](http://codeforces.com/problemset/problem/455/C)|Codeforces||Codeforces Round #260 (Div. 1) & Codeforces Round #260 (Div. 2)|4|\n|<ul><li>- [ ] Done</li></ul>|70|[The Bug Sensor Problem](https://uva.onlinejudge.org/index.php?option=onlinejudge&page=show_problem&problem=3657)|UVA|||4|\n|<ul><li>- [ ] Done</li></ul>|71|[Island Hopping](http://www.spoj.com/problems/ISLHOP/)|SPOJ|||4|\n|<ul><li>- [ ] Done</li></ul>|72|[Prim](https://uva.onlinejudge.org/index.php?option=onlinejudge&page=show_problem&problem=1748)|UVA|||5|\n|<ul><li>- [ ] Done</li></ul>|73|[Hedge Mazes](https://uva.onlinejudge.org/index.php?option=onlinejudge&page=show_problem&problem=3785)|UVA|||5|\n|<ul><li>- [ ] Done</li></ul>|74|[Fix the Pond](https://uva.onlinejudge.org/index.php?option=onlinejudge&page=show_problem&problem=3974)|UVA|||5|\n|<ul><li>- [ ] Done</li></ul>|75|[Kingdoms](https://uva.onlinejudge.org/index.php?option=onlinejudge&page=show_problem&problem=3951)|UVA|||6|\n|<ul><li>- [ ] Done</li></ul>|76|[FreeDiv](http://codeforces.com/problemset/problem/73/D)|Codeforces||Codeforces Beta Round #66|8|\n|<ul><li>- [ ] Done</li></ul>|77|[Dividing Kingdom II](http://codeforces.com/problemset/problem/687/D)|Codeforces||Codeforces Round #360 (Div. 1)|8|\n"
  },
  {
    "path": "categories/033. hashing/README.md",
    "content": "# 033. hashing\n\n\n| Checkbox | ID | Problem Name|Online Judge|Contest|Difficulty Level|\n|:---:|:---:|:---:|:---:|:---:|:---:|\n|<ul><li>- [ ] Done</li></ul>|1|[Registration System](http://codeforces.com/problemset/problem/4/C)|Codeforces|Codeforces Beta Round #4 (Div. 2 Only)|1|\n|<ul><li>- [ ] Done</li></ul>|2|[Vitaliy and Pie](http://codeforces.com/problemset/problem/525/A)|Codeforces|Codeforces Round #297 (Div. 2)|1|\n|<ul><li>- [ ] Done</li></ul>|3|[Winner](http://codeforces.com/problemset/problem/2/A)|Codeforces|Codeforces Beta Round #2|1|\n|<ul><li>- [ ] Done</li></ul>|4|[OR in Matrix](http://codeforces.com/problemset/problem/486/B)|Codeforces|Codeforces Round #277 (Div. 2)|1|\n|<ul><li>- [ ] Done</li></ul>|5|[Bear and Three Musketeers](http://codeforces.com/problemset/problem/574/B)|Codeforces|Codeforces Round #318 [RussianCodeCup Thanks-Round] (Div. 2)|2|\n|<ul><li>- [ ] Done</li></ul>|6|[Password](http://codeforces.com/problemset/problem/126/B)|Codeforces|Codeforces Beta Round #93 (Div. 1 Only) & Codeforces Beta Round #93 (Div. 2 Only)|2|\n|<ul><li>- [ ] Done</li></ul>|7|[FIGUREFUL](http://www.spoj.com/problems/ACMCEG2B/)|SPOJ||2|\n|<ul><li>- [ ] Done</li></ul>|8|[Equivalent Strings](http://codeforces.com/problemset/problem/559/B)|Codeforces|Codeforces Round #313 (Div. 1) & Codeforces Round #313 (Div. 2)|2|\n|<ul><li>- [ ] Done</li></ul>|9|[Simple Minded Hashing](https://uva.onlinejudge.org/index.php?option=onlinejudge&page=show_problem&problem=1853)|UVA||2|\n|<ul><li>- [ ] Done</li></ul>|10|[Good Substrings](http://codeforces.com/problemset/problem/271/D)|Codeforces|Codeforces Round #166 (Div. 2)|3|\n|<ul><li>- [ ] Done</li></ul>|11|[Gargari and Bishops](http://codeforces.com/problemset/problem/463/C)|Codeforces|Codeforces Round #264 (Div. 2)|3|\n|<ul><li>- [ ] Done</li></ul>|12|[VOI 2013 - Trao ?&#7893;i thông tin](http://vn.spoj.com/problems/MESSAGE1/)|SPOJ Vietnam||3|\n|<ul><li>- [ ] Done</li></ul>|13|[Common Divisors](http://codeforces.com/problemset/problem/182/D)|Codeforces|Codeforces Round #117 (Div. 2)|3|\n|<ul><li>- [ ] Done</li></ul>|14|[Watto and Mechanism](http://codeforces.com/problemset/problem/514/C)|Codeforces|Codeforces Round #291 (Div. 2)|3|\n|<ul><li>- [ ] Done</li></ul>|15|[Long Jumps](http://codeforces.com/problemset/problem/479/D)|Codeforces|Codeforces Round #274 (Div. 2) & Codeforces Round #274 (Div. 1)|3|\n|<ul><li>- [ ] Done</li></ul>|16|[Almost Arithmetical Progression](http://codeforces.com/problemset/problem/255/C)|Codeforces|Codeforces Round #156 (Div. 2) & Codeforces Round #156 (Div. 1)|4|\n|<ul><li>- [ ] Done</li></ul>|17|[Queries for Number of Palindromes](http://codeforces.com/problemset/problem/245/H)|Codeforces|CROC-MBTU 2012, Elimination Round (ACM-ICPC)|4|\n|<ul><li>- [ ] Done</li></ul>|18|[King's Path](http://codeforces.com/problemset/problem/242/C)|Codeforces|Codeforces Round #149 (Div. 2)|4|\n|<ul><li>- [ ] Done</li></ul>|19|[Tavas and Malekas](http://codeforces.com/problemset/problem/535/D)|Codeforces|Codeforces Round #299 (Div. 2) & Codeforces Round #299 (Div. 1)|4|\n|<ul><li>- [ ] Done</li></ul>|20|[Train and Peter](http://codeforces.com/problemset/problem/8/A)|Codeforces|Codeforces Beta Round #8|4|\n|<ul><li>- [ ] Done</li></ul>|21|[Replacing Digits](http://codeforces.com/problemset/problem/169/B)|Codeforces|VK Cup 2012 Round 2 (Unofficial Div. 2 Edition)|5|\n|<ul><li>- [ ] Done</li></ul>|22|[Correcting Mistakes](http://codeforces.com/problemset/problem/533/E)|Codeforces|VK Cup 2015 - Round 2 (unofficial online mirror, Div. 1 only)|5|\n|<ul><li>- [ ] Done</li></ul>|23|[Fibonacci-ish](http://codeforces.com/problemset/problem/633/D)|Codeforces|Manthan, Codefest 16|5|\n|<ul><li>- [ ] Done</li></ul>|24|[Spy Syndrome 2](http://codeforces.com/problemset/problem/633/C)|Codeforces|Manthan, Codefest 16|5|\n|<ul><li>- [ ] Done</li></ul>|25|[Petr#](http://codeforces.com/problemset/problem/113/B)|Codeforces|Codeforces Beta Round #86 (Div. 1 Only) & Codeforces Beta Round #86 (Div. 2 Only)|5|\n|<ul><li>- [ ] Done</li></ul>|26|[Sets](http://codeforces.com/problemset/problem/82/B)|Codeforces|Yandex.Algorithm 2011 Qualification 2|5|\n|<ul><li>- [ ] Done</li></ul>|27|[New Year and Ancient Prophecy](http://codeforces.com/problemset/problem/611/D)|Codeforces|Good Bye 2015|5|\n|<ul><li>- [ ] Done</li></ul>|28|[Palindrome Degree](http://codeforces.com/problemset/problem/7/D)|Codeforces|Codeforces Beta Round #7|5|\n|<ul><li>- [ ] Done</li></ul>|29|[Kefa and Watch](http://codeforces.com/problemset/problem/580/E)|Codeforces|Codeforces Round #321 (Div. 2)|6|\n|<ul><li>- [ ] Done</li></ul>|30|[Fedor and Essay](http://codeforces.com/problemset/problem/467/D)|Codeforces|Codeforces Round #267 (Div. 2)|6|\n|<ul><li>- [ ] Done</li></ul>|31|[Double Profiles](http://codeforces.com/problemset/problem/154/C)|Codeforces|Codeforces Round #109 (Div. 1) & Codeforces Round #109 (Div. 2)|6|\n|<ul><li>- [ ] Done</li></ul>|32|[Spelling Check](http://codeforces.com/problemset/problem/39/J)|Codeforces|School Team Contest #1 (Winter Computer School 2010/11)|6|\n|<ul><li>- [ ] Done</li></ul>|33|[Bear and Polynomials](http://codeforces.com/problemset/problem/639/C)|Codeforces|VK Cup 2016 - Round 1|6|\n|<ul><li>- [ ] Done</li></ul>|34|[String](http://codeforces.com/problemset/problem/128/B)|Codeforces|Codeforces Beta Round #94 (Div. 1 Only) & Codeforces Beta Round #94 (Div. 2 Only)|6|\n|<ul><li>- [ ] Done</li></ul>|35|[Om Nom and Necklace](http://codeforces.com/problemset/problem/526/D)|Codeforces|ZeptoLab Code Rush 2015|6|\n|<ul><li>- [ ] Done</li></ul>|36|[Test](http://codeforces.com/problemset/problem/25/E)|Codeforces|Codeforces Beta Round #25 (Div. 2 Only)|6|\n|<ul><li>- [ ] Done</li></ul>|37|[Messenger](http://codeforces.com/problemset/problem/631/D)|Codeforces|Codeforces Round #344 (Div. 2)|6|\n|<ul><li>- [ ] Done</li></ul>|38|[Caesar Cipher](https://uva.onlinejudge.org/index.php?option=onlinejudge&page=show_problem&problem=4282)|UVA||6|\n|<ul><li>- [ ] Done</li></ul>|39|[Beaver](http://codeforces.com/problemset/problem/79/C)|Codeforces|Codeforces Beta Round #71|6|\n|<ul><li>- [ ] Done</li></ul>|40|[LIS of Sequence](http://codeforces.com/problemset/problem/486/E)|Codeforces|Codeforces Round #277 (Div. 2)|6|\n|<ul><li>- [ ] Done</li></ul>|41|[Acyclic Organic Compounds](http://codeforces.com/problemset/problem/601/D)|Codeforces|Codeforces Round #333 (Div. 1)|7|\n|<ul><li>- [ ] Done</li></ul>|42|[Encoding](http://codeforces.com/problemset/problem/533/F)|Codeforces|VK Cup 2015 - Round 2 (unofficial online mirror, Div. 1 only)|7|\n|<ul><li>- [ ] Done</li></ul>|43|[Peterson Polyglot](http://codeforces.com/problemset/problem/778/C)|Codeforces|Codeforces Round #402 (Div. 1) & Codeforces Round #402 (Div. 2)|7|\n|<ul><li>- [ ] Done</li></ul>|44|[Good Substrings](http://codeforces.com/problemset/problem/316/G1)|Codeforces|ABBYY Cup 3.0|7|\n|<ul><li>- [ ] Done</li></ul>|45|[President and Roads](http://codeforces.com/problemset/problem/567/E)|Codeforces|Codeforces Round #Pi (Div. 2)|7|\n|<ul><li>- [ ] Done</li></ul>|46|[The Untended Antiquity](http://codeforces.com/problemset/problem/869/E)|Codeforces|Codeforces Round #439 (Div. 2)|7|\n|<ul><li>- [ ] Done</li></ul>|47|[The angry professor](http://www.spoj.com/problems/VEXPROF/)|SPOJ||7|\n|<ul><li>- [ ] Done</li></ul>|48|[Sereja and Squares](http://codeforces.com/problemset/problem/425/D)|Codeforces|Codeforces Round #243 (Div. 1)|7|\n|<ul><li>- [ ] Done</li></ul>|49|[Tree-String Problem](http://codeforces.com/problemset/problem/291/E)|Codeforces|Croc Champ 2013 - Qualification Round|7|\n|<ul><li>- [ ] Done</li></ul>|50|[Counter Attack](http://codeforces.com/problemset/problem/190/E)|Codeforces|Codeforces Round #120 (Div. 2)|7|\n|<ul><li>- [ ] Done</li></ul>|51|[Marbles](http://codeforces.com/problemset/problem/607/C)|Codeforces|Codeforces Round #336 (Div. 1) & Codeforces Round #336 (Div. 2)|7|\n|<ul><li>- [ ] Done</li></ul>|52|[Cutting Jigsaw Puzzle](http://codeforces.com/problemset/problem/54/B)|Codeforces|Codeforces Beta Round #50|8|\n|<ul><li>- [ ] Done</li></ul>|53|[Tricky and Clever Password](http://codeforces.com/problemset/problem/30/E)|Codeforces|Codeforces Beta Round #30 (Codeforces format)|8|\n|<ul><li>- [ ] Done</li></ul>|54|[Permutation](http://codeforces.com/problemset/problem/452/F)|Codeforces|MemSQL Start[c]UP 2.0 - Round 1|8|\n|<ul><li>- [ ] Done</li></ul>|55|[Fractal Detector](http://codeforces.com/problemset/problem/228/C)|Codeforces|Codeforces Round #141 (Div. 2)|8|\n|<ul><li>- [ ] Done</li></ul>|56|[Don't fear, DravDe is kind](http://codeforces.com/problemset/problem/28/D)|Codeforces|Codeforces Beta Round #28 (Codeforces format)|8|\n|<ul><li>- [ ] Done</li></ul>|57|[DZY Loves Strings](http://codeforces.com/problemset/problem/444/D)|Codeforces|Codeforces Round #254 (Div. 1)|8|\n|<ul><li>- [ ] Done</li></ul>|58|[Two Permutations](http://codeforces.com/problemset/problem/213/E)|Codeforces|Codeforces Round #131 (Div. 1)|8|\n|<ul><li>- [ ] Done</li></ul>|59|[Restoring the Expression](http://codeforces.com/problemset/problem/898/F)|Codeforces|Codeforces Round #451 (Div. 2)|8|\n|<ul><li>- [ ] Done</li></ul>|60|[Deletion of Repeats](http://codeforces.com/problemset/problem/19/C)|Codeforces|Codeforces Beta Round #19|8|\n|<ul><li>- [ ] Done</li></ul>|61|[Have You Ever Heard About the Word?](http://codeforces.com/problemset/problem/319/D)|Codeforces|Codeforces Round #189 (Div. 1)|9|\n|<ul><li>- [ ] Done</li></ul>|62|[Timofey and a flat tree](http://codeforces.com/problemset/problem/763/D)|Codeforces|Codeforces Round #395 (Div. 1)|9|\n|<ul><li>- [ ] Done</li></ul>|63|[String Transformation](http://codeforces.com/problemset/problem/119/D)|Codeforces|Codeforces Beta Round #90|9|\n|<ul><li>- [ ] Done</li></ul>|64|[Superhero's Job](http://codeforces.com/problemset/problem/542/D)|Codeforces|VK Cup 2015 - Round 3 (unofficial online mirror, Div. 1 only)|9|\n|<ul><li>- [ ] Done</li></ul>|65|[And Yet Another Bracket Sequence](http://codeforces.com/problemset/problem/524/F)|Codeforces|VK Cup 2015 - Round 1|9|\n|<ul><li>- [ ] Done</li></ul>|66|[Polycarpus is Looking for Good Substrings](http://codeforces.com/problemset/problem/212/B)|Codeforces|VK Cup 2012 Finals (unofficial online-version)|9|\n|<ul><li>- [ ] Done</li></ul>|67|[Largest Submatrix 3](http://codeforces.com/problemset/problem/407/D)|Codeforces|Codeforces Round #239 (Div. 1)|9|\n|<ul><li>- [ ] Done</li></ul>|68|[The Next Good String](http://codeforces.com/problemset/problem/196/D)|Codeforces|Codeforces Round #124 (Div. 1)|9|\n|<ul><li>- [ ] Done</li></ul>|69|[Simplified Nonogram](http://codeforces.com/problemset/problem/534/F)|Codeforces|Codeforces Round #298 (Div. 2)|9|\n|<ul><li>- [ ] Done</li></ul>|70|[Xenia and String Problem](http://codeforces.com/problemset/problem/356/E)|Codeforces|Codeforces Round #207 (Div. 1)|9|\n|<ul><li>- [ ] Done</li></ul>|71|[Harry Potter and the Sorting Hat](http://codeforces.com/problemset/problem/65/D)|Codeforces|Codeforces Beta Round #60|9|\n|<ul><li>- [ ] Done</li></ul>|72|[Berland Local Positioning System](http://codeforces.com/problemset/problem/534/E)|Codeforces|Codeforces Round #298 (Div. 2)|9|\n|<ul><li>- [ ] Done</li></ul>|73|[Rap God](http://codeforces.com/problemset/problem/786/D)|Codeforces|Codeforces Round #406 (Div. 1)|10|\n|<ul><li>- [ ] Done</li></ul>|74|[Puzzle Lover](http://codeforces.com/problemset/problem/613/E)|Codeforces|Codeforces Round #339 (Div. 1)|10|\n|<ul><li>- [ ] Done</li></ul>|75|[Misha and LCP on Tree](http://codeforces.com/problemset/problem/504/E)|Codeforces|Codeforces Round #285 (Div. 1)|10|\n|<ul><li>- [ ] Done</li></ul>|76|[Looking for Owls](http://codeforces.com/problemset/problem/350/D)|Codeforces|Codeforces Round #203 (Div. 2)|10|\n"
  },
  {
    "path": "categories/034. Binary_Indexed_Tree/README.md",
    "content": "# 034. Binary_Indexed_Tree\n\n\n| Checkbox | ID | Problem Name|Online Judge|Year|Contest|Difficulty Level|\n|:---:|:---:|:---:|:---:|:---:|:---:|:---:|\n|<ul><li>- [ ] Done</li></ul>|1|[Increasing Subsequences](http://www.spoj.com/problems/INCSEQ/)|SPOJ|||1|\n|<ul><li>- [ ] Done</li></ul>|2|[K-query](http://www.spoj.com/problems/KQUERY/)|SPOJ|||1|\n|<ul><li>- [ ] Done</li></ul>|3|[Matrix Summation](http://www.spoj.com/problems/MATSUM/)|SPOJ|||1|\n|<ul><li>- [ ] Done</li></ul>|4|[Yodaness Level](http://www.spoj.com/problems/YODANESS/)|SPOJ|||1|\n|<ul><li>- [ ] Done</li></ul>|5|[Number of Ways](http://codeforces.com/problemset/problem/466/C)|Codeforces||Codeforces Round #266 (Div. 2)|1|\n|<ul><li>- [ ] Done</li></ul>|6|[Assistance Required](http://www.spoj.com/problems/ASSIST/)|SPOJ|||1|\n|<ul><li>- [ ] Done</li></ul>|7|[Japan](http://www.spoj.com/problems/MSE06H/)|SPOJ|||1|\n|<ul><li>- [ ] Done</li></ul>|8|[Inversion Count](http://www.spoj.com/problems/INVCNT/)|SPOJ|||1|\n|<ul><li>- [ ] Done</li></ul>|9|[Jupiter Atacks!](https://icpcarchive.ecs.baylor.edu/index.php?option=onlinejudge&page=show_problem&problem=3809)|Live Archive|2011|Latin America|1|\n|<ul><li>- [ ] Done</li></ul>|10|[Little Girl and Maximum Sum](http://codeforces.com/problemset/problem/276/C)|Codeforces||Codeforces Round #169 (Div. 2)|1|\n|<ul><li>- [ ] Done</li></ul>|11|[Ordering the Soldiers](http://www.spoj.com/problems/ORDERS/)|SPOJ|||1|\n|<ul><li>- [ ] Done</li></ul>|12|[Horrible Queries](http://www.spoj.com/problems/HORRIBLE/)|SPOJ|||1|\n|<ul><li>- [ ] Done</li></ul>|13|[Coder Ratings](http://www.spoj.com/problems/RATING/)|SPOJ|||1|\n|<ul><li>- [ ] Done</li></ul>|14|[Can you answer these queries IV](http://www.spoj.com/problems/GSS4/)|SPOJ|||1|\n|<ul><li>- [ ] Done</li></ul>|15|[The day of the competitors](http://www.spoj.com/problems/NICEDAY/)|SPOJ|||1|\n|<ul><li>- [ ] Done</li></ul>|16|[Update the array !](http://www.spoj.com/problems/UPDATEIT/)|SPOJ|||1|\n|<ul><li>- [ ] Done</li></ul>|17|[Card Trick](http://www.spoj.com/problems/CTRICK/)|SPOJ|||1|\n|<ul><li>- [ ] Done</li></ul>|18|[Interval Product](https://icpcarchive.ecs.baylor.edu/index.php?option=onlinejudge&page=show_problem&problem=4150)|Live Archive|2012|Latin America|1|\n|<ul><li>- [ ] Done</li></ul>|19|[Order statistic set](http://www.spoj.com/problems/ORDERSET/)|SPOJ|||1|\n|<ul><li>- [ ] Done</li></ul>|20|[Bingo!](https://icpcarchive.ecs.baylor.edu/index.php?option=onlinejudge&page=show_problem&problem=2807)|Live Archive|2010|Latin America|1|\n|<ul><li>- [ ] Done</li></ul>|21|[D-query](http://www.spoj.com/problems/DQUERY/)|SPOJ|||1|\n|<ul><li>- [ ] Done</li></ul>|22|[Gravel](http://www.codechef.com/problems/SPREAD)|CodeChef|||1|\n|<ul><li>- [ ] Done</li></ul>|23|[WIND VANE](http://www.spoj.com/problems/WINDVANE/)|SPOJ|||2|\n|<ul><li>- [ ] Done</li></ul>|24|[Greg and Array](http://codeforces.com/problemset/problem/295/A)|Codeforces||Codeforces Round #179 (Div. 1) & Codeforces Round #179 (Div. 2)|2|\n|<ul><li>- [ ] Done</li></ul>|25|[Interval Product](https://uva.onlinejudge.org/index.php?option=onlinejudge&page=show_problem&problem=3977)|UVA|||2|\n|<ul><li>- [ ] Done</li></ul>|26|[Potentiometers](https://uva.onlinejudge.org/index.php?option=onlinejudge&page=show_problem&problem=3238)|UVA|||2|\n|<ul><li>- [ ] Done</li></ul>|27|[Matrix](http://www.spoj.com/problems/KPMATRIX/)|SPOJ|||2|\n|<ul><li>- [ ] Done</li></ul>|28|[Fenwick Trees](http://www.spoj.com/problems/FENTREE/)|SPOJ|||2|\n|<ul><li>- [ ] Done</li></ul>|29|[Round-Robin Scheduling](http://www.spoj.com/problems/RRSCHED/)|SPOJ|||2|\n|<ul><li>- [ ] Done</li></ul>|30|[IOI01 Mobiles](http://www.spoj.com/problems/NKMOBILE/)|SPOJ|||2|\n|<ul><li>- [ ] Done</li></ul>|31|[Thor](http://codeforces.com/problemset/problem/704/A)|Codeforces||Codeforces Round #366 (Div. 1) & Codeforces Round #366 (Div. 2)|2|\n|<ul><li>- [ ] Done</li></ul>|32|[Counting inversions](http://www.spoj.com/problems/SWAPS/)|SPOJ|||2|\n|<ul><li>- [ ] Done</li></ul>|33|[Chaos Strings](http://www.spoj.com/problems/MCHAOS/)|SPOJ|||2|\n|<ul><li>- [ ] Done</li></ul>|34|[Karen and Coffee](http://codeforces.com/problemset/problem/816/B)|Codeforces||Codeforces Round #419 (Div. 2)|2|\n|<ul><li>- [ ] Done</li></ul>|35|[Meteors](http://www.spoj.com/problems/METEORS/)|SPOJ|||2|\n|<ul><li>- [ ] Done</li></ul>|36|[Distinct Increasing Subsequences](http://www.spoj.com/problems/INCDSEQ/)|SPOJ|||2|\n|<ul><li>- [ ] Done</li></ul>|37|[Cvjetici](http://www.spoj.com/problems/CVJETICI/)|SPOJ|||2|\n|<ul><li>- [ ] Done</li></ul>|38|[Pashmak and Parmida's problem](http://codeforces.com/problemset/problem/459/D)|Codeforces||Codeforces Round #261 (Div. 2)|3|\n|<ul><li>- [ ] Done</li></ul>|39|[New bricks disorder](http://www.spoj.com/problems/BRICKS/)|SPOJ|||3|\n|<ul><li>- [ ] Done</li></ul>|40|[Ping pong](https://uva.onlinejudge.org/index.php?option=onlinejudge&page=show_problem&problem=4174)|UVA|||3|\n|<ul><li>- [ ] Done</li></ul>|41|[UFOs](http://acm.timus.ru/problem.aspx?space=1&num=1470)|Timus|||3|\n|<ul><li>- [ ] Done</li></ul>|42|[Above the Median ](http://vn.spoj.com/problems/KMEDIAN/)|SPOJ Vietnam|||3|\n|<ul><li>- [ ] Done</li></ul>|43|[Calculate The Cost](http://www.spoj.com/problems/CCOST/)|SPOJ|||3|\n|<ul><li>- [ ] Done</li></ul>|44|[Salary Management](http://www.spoj.com/problems/SALMAN/)|SPOJ|||3|\n|<ul><li>- [ ] Done</li></ul>|45|[Team Selection](http://www.spoj.com/problems/NKTEAM/)|SPOJ|||3|\n|<ul><li>- [ ] Done</li></ul>|46|[Chef and Swaps](http://www.codechef.com/problems/CHEFINV)|CodeChef|||3|\n|<ul><li>- [ ] Done</li></ul>|47|[Census](https://uva.onlinejudge.org/index.php?option=onlinejudge&page=show_problem&problem=2272)|UVA|||3|\n|<ul><li>- [ ] Done</li></ul>|48|[Queue (Pro)](http://www.spoj.com/problems/QUE2/)|SPOJ|||3|\n|<ul><li>- [ ] Done</li></ul>|49|[Counting pairs](http://www.spoj.com/problems/CPAIR/)|SPOJ|||4|\n|<ul><li>- [ ] Done</li></ul>|50|[Cow Photographs ](http://www.spoj.com/problems/COWPIC/)|SPOJ|||4|\n|<ul><li>- [ ] Done</li></ul>|51|[Movie collection](https://uva.onlinejudge.org/index.php?option=onlinejudge&page=show_problem&problem=4259)|UVA|||4|\n|<ul><li>- [ ] Done</li></ul>|52|[Propagating tree](http://codeforces.com/problemset/problem/383/C)|Codeforces||Codeforces Round #225 (Div. 1) & Codeforces Round #225 (Div. 2)|4|\n|<ul><li>- [ ] Done</li></ul>|53|[PolandBall and Polygon](http://codeforces.com/problemset/problem/755/D)|Codeforces||8VC Venture Cup 2017 - Elimination Round|5|\n|<ul><li>- [ ] Done</li></ul>|54|[``Dynamic'' Inversion](https://uva.onlinejudge.org/index.php?option=onlinejudge&page=show_problem&problem=3141)|UVA|||5|\n|<ul><li>- [ ] Done</li></ul>|55|[Balé](http://br.spoj.com/problems/BALE11/)|SPOJ Brazil|||5|\n|<ul><li>- [ ] Done</li></ul>|56|[Tufurama](http://codeforces.com/problemset/problem/961/E)|Codeforces||Educational Codeforces Round 41 (Rated for Div. 2)|5|\n|<ul><li>- [ ] Done</li></ul>|57|[Mishka and Interesting sum](http://codeforces.com/problemset/problem/703/D)|Codeforces||Codeforces Round #365 (Div. 2)|5|\n|<ul><li>- [ ] Done</li></ul>|58|[Jupiter Atacks!](https://uva.onlinejudge.org/index.php?option=onlinejudge&page=show_problem&problem=3787)|UVA|||5|\n|<ul><li>- [ ] Done</li></ul>|59|[Pillars](http://codeforces.com/problemset/problem/474/E)|Codeforces||Codeforces Round #271 (Div. 2)|5|\n|<ul><li>- [ ] Done</li></ul>|60|[FloatingMedian](http://community.topcoder.com/stat?c=problem_statement&pm=6551)|TopCoder||SRM 310 - Div1 medium - Div2 hard] (9990)|6|\n|<ul><li>- [ ] Done</li></ul>|61|[Valera and Queries](http://codeforces.com/problemset/problem/369/E)|Codeforces||Codeforces Round #216 (Div. 2)|6|\n|<ul><li>- [ ] Done</li></ul>|62|[Sereja and Arcs](http://www.codechef.com/problems/SEAARC)|CodeChef|||6|\n|<ul><li>- [ ] Done</li></ul>|63|[Infinite Inversions](http://codeforces.com/problemset/problem/540/E)|Codeforces||Codeforces Round #301 (Div. 2)|6|\n|<ul><li>- [ ] Done</li></ul>|64|[Dog Show](http://codeforces.com/problemset/problem/847/D)|Codeforces||2017-2018 ACM-ICPC, NEERC, Southern Subregional Contest, qualification stage (Online Mirror, ACM-ICPC Rules, Teams Preferred)|7|\n|<ul><li>- [ ] Done</li></ul>|65|[Count The Indexes 2](http://www.spoj.com/problems/CNTINDX2/)|SPOJ|||7|\n|<ul><li>- [ ] Done</li></ul>|66|[Ambitious Experiment](http://acm.timus.ru/problem.aspx?space=1&num=2062)|Timus|||7|\n|<ul><li>- [ ] Done</li></ul>|67|[George and Cards](http://codeforces.com/problemset/problem/387/E)|Codeforces||Codeforces Round #227 (Div. 2)|7|\n|<ul><li>- [ ] Done</li></ul>|68|[Júpiter Ataca!](http://br.spoj.com/problems/JUPT11/)|SPOJ Brazil|||8|\n|<ul><li>- [ ] Done</li></ul>|69|[Radio stations](http://codeforces.com/problemset/problem/762/E)|Codeforces||Educational Codeforces Round 17|8|\n"
  },
  {
    "path": "categories/035. divide_and_conquer/README.md",
    "content": "# 035. divide_and_conquer\n\n\n| Checkbox | ID | Problem Name|Online Judge|Contest|Difficulty Level|\n|:---:|:---:|:---:|:---:|:---:|:---:|\n|<ul><li>- [ ] Done</li></ul>|1|[Equivalent Strings](http://codeforces.com/problemset/problem/559/B)|Codeforces|Codeforces Round #313 (Div. 1) & Codeforces Round #313 (Div. 2)|2|\n|<ul><li>- [ ] Done</li></ul>|2|[Pashmak and Parmida's problem](http://codeforces.com/problemset/problem/459/D)|Codeforces|Codeforces Round #261 (Div. 2)|3|\n|<ul><li>- [ ] Done</li></ul>|3|[Painting Fence](http://codeforces.com/problemset/problem/448/C)|Codeforces|Codeforces Round #256 (Div. 2)|3|\n|<ul><li>- [ ] Done</li></ul>|4|[Distance in Tree](http://codeforces.com/problemset/problem/161/D)|Codeforces|VK Cup 2012 Round 1|3|\n|<ul><li>- [ ] Done</li></ul>|5|[Permutations](http://codeforces.com/problemset/problem/513/B2)|Codeforces|Rockethon 2015|4|\n|<ul><li>- [ ] Done</li></ul>|6|[Xenia and Tree](http://codeforces.com/problemset/problem/342/E)|Codeforces|Codeforces Round #199 (Div. 2)|4|\n|<ul><li>- [ ] Done</li></ul>|7|[Book of Evil](http://codeforces.com/problemset/problem/337/D)|Codeforces|Codeforces Round #196 (Div. 2) & Codeforces Round #196 (Div. 1)|4|\n|<ul><li>- [ ] Done</li></ul>|8|[Ciel the Commander](http://codeforces.com/problemset/problem/321/C)|Codeforces|Codeforces Round #190 (Div. 1) & Codeforces Round #190 (Div. 2)|4|\n|<ul><li>- [ ] Done</li></ul>|9|[How many trees?](http://codeforces.com/problemset/problem/9/D)|Codeforces|Codeforces Beta Round #9 (Div. 2 Only)|5|\n|<ul><li>- [ ] Done</li></ul>|10|[Points on Plane](http://codeforces.com/problemset/problem/576/C)|Codeforces|Codeforces Round #319 (Div. 1) & Codeforces Round #319 (Div. 2)|5|\n|<ul><li>- [ ] Done</li></ul>|11|[Tricky Function](http://codeforces.com/problemset/problem/429/D)|Codeforces|Codeforces Round #245 (Div. 1)|5|\n|<ul><li>- [ ] Done</li></ul>|12|[Mashmokh and Reverse Operation](http://codeforces.com/problemset/problem/414/C)|Codeforces|Codeforces Round #240 (Div. 1) & Codeforces Round #240 (Div. 2)|5|\n|<ul><li>- [ ] Done</li></ul>|13|[Counting Rectangles is Fun](http://codeforces.com/problemset/problem/372/B)|Codeforces|Codeforces Round #219 (Div. 1) & Codeforces Round #219 (Div. 2)|5|\n|<ul><li>- [ ] Done</li></ul>|14|[Practice](http://codeforces.com/problemset/problem/234/G)|Codeforces|Codeforces Round #145 (Div. 2, ACM-ICPC Rules) & Codeforces Round #145 (Div. 1, ACM-ICPC Rules)|6|\n|<ul><li>- [ ] Done</li></ul>|15|[Hongcow's Game](http://codeforces.com/problemset/problem/744/B)|Codeforces|Codeforces Round #385 (Div. 1) & Codeforces Round #385 (Div. 2)|6|\n|<ul><li>- [ ] Done</li></ul>|16|[Ciel and Gondolas](http://codeforces.com/problemset/problem/321/E)|Codeforces|Codeforces Round #190 (Div. 1)|6|\n|<ul><li>- [ ] Done</li></ul>|17|[New Year Tree](http://codeforces.com/problemset/problem/379/F)|Codeforces|Good Bye 2013|6|\n|<ul><li>- [ ] Done</li></ul>|18|[Fairy](http://codeforces.com/problemset/problem/19/E)|Codeforces|Codeforces Beta Round #19|7|\n|<ul><li>- [ ] Done</li></ul>|19|[Building Bridge](http://codeforces.com/problemset/problem/250/D)|Codeforces|CROC-MBTU 2012, Final Round (Online version, Div. 2)|7|\n|<ul><li>- [ ] Done</li></ul>|20|[Minimum Sum](http://codeforces.com/problemset/problem/120/J)|Codeforces|School Regional Team Contest, Saratov, 2011|7|\n|<ul><li>- [ ] Done</li></ul>|21|[Beautiful Subarrays](http://codeforces.com/problemset/problem/665/E)|Codeforces|Educational Codeforces Round 12|7|\n|<ul><li>- [ ] Done</li></ul>|22|[Nanami's Digital Board](http://codeforces.com/problemset/problem/433/D)|Codeforces|Codeforces Round #248 (Div. 2) & Codeforces Round #248 (Div. 1)|7|\n|<ul><li>- [ ] Done</li></ul>|23|[Binary Table](http://codeforces.com/problemset/problem/662/C)|Codeforces|CROC 2016 - Final Round [Private, For Onsite Finalists Only]|7|\n|<ul><li>- [ ] Done</li></ul>|24|[Till I Collapse](http://codeforces.com/problemset/problem/786/C)|Codeforces|Codeforces Round #406 (Div. 1) & Codeforces Round #406 (Div. 2)|7|\n|<ul><li>- [ ] Done</li></ul>|25|[Thief in a Shop](http://codeforces.com/problemset/problem/632/E)|Codeforces|Educational Codeforces Round 9|7|\n|<ul><li>- [ ] Done</li></ul>|26|[Paint Tree](http://codeforces.com/problemset/problem/196/C)|Codeforces|Codeforces Round #124 (Div. 1) & Codeforces Round #124 (Div. 2)|7|\n|<ul><li>- [ ] Done</li></ul>|27|[Package Delivery](http://codeforces.com/problemset/problem/627/C)|Codeforces|8VC Venture Cup 2016 - Final Round|7|\n|<ul><li>- [ ] Done</li></ul>|28|[Digit Tree](http://codeforces.com/problemset/problem/715/C)|Codeforces|Codeforces Round #372 (Div. 1) & Codeforces Round #372 (Div. 2)|7|\n|<ul><li>- [ ] Done</li></ul>|29|[Abracadabra](http://codeforces.com/problemset/problem/161/C)|Codeforces|VK Cup 2012 Round 1|8|\n|<ul><li>- [ ] Done</li></ul>|30|[Pudding Monsters](http://codeforces.com/problemset/problem/526/F)|Codeforces|ZeptoLab Code Rush 2015|8|\n|<ul><li>- [ ] Done</li></ul>|31|[The Child and Binary Tree](http://codeforces.com/problemset/problem/438/E)|Codeforces|Codeforces Round #250 (Div. 1)|8|\n|<ul><li>- [ ] Done</li></ul>|32|[Permutation](http://codeforces.com/problemset/problem/452/F)|Codeforces|MemSQL Start[c]UP 2.0 - Round 1|8|\n|<ul><li>- [ ] Done</li></ul>|33|[Magic Matrix](http://codeforces.com/problemset/problem/632/F)|Codeforces|Educational Codeforces Round 9|8|\n|<ul><li>- [ ] Done</li></ul>|34|[Vowels](http://codeforces.com/problemset/problem/383/E)|Codeforces|Codeforces Round #225 (Div. 1)|8|\n|<ul><li>- [ ] Done</li></ul>|35|[Find a car](http://codeforces.com/problemset/problem/809/C)|Codeforces|Codeforces Round #415 (Div. 1) & Codeforces Round #415 (Div. 2)|8|\n|<ul><li>- [ ] Done</li></ul>|36|[Superset](http://codeforces.com/problemset/problem/97/B)|Codeforces|Yandex.Algorithm 2011 Finals|8|\n|<ul><li>- [ ] Done</li></ul>|37|[Yura and Developers](http://codeforces.com/problemset/problem/549/F)|Codeforces|Looksery Cup 2015|8|\n|<ul><li>- [ ] Done</li></ul>|38|[Close Vertices](http://codeforces.com/problemset/problem/293/E)|Codeforces|Croc Champ 2013 - Round 2|8|\n|<ul><li>- [ ] Done</li></ul>|39|[Goodbye Souvenir](http://codeforces.com/problemset/problem/848/C)|Codeforces|Codeforces Round #431 (Div. 1) & Codeforces Round #431 (Div. 2)|8|\n|<ul><li>- [ ] Done</li></ul>|40|[Kingdom and its Cities](http://codeforces.com/problemset/problem/613/D)|Codeforces|Codeforces Round #339 (Div. 1)|8|\n|<ul><li>- [ ] Done</li></ul>|41|[One-Based Arithmetic](http://codeforces.com/problemset/problem/440/C)|Codeforces|Testing Round #10|8|\n|<ul><li>- [ ] Done</li></ul>|42|[Pastoral Oddities](http://codeforces.com/problemset/problem/603/E)|Codeforces|Codeforces Round #334 (Div. 1)|9|\n|<ul><li>- [ ] Done</li></ul>|43|[Freezing with Style](http://codeforces.com/problemset/problem/150/E)|Codeforces|Codeforces Round #107 (Div. 1)|9|\n|<ul><li>- [ ] Done</li></ul>|44|[Polycarp's Masterpiece](http://codeforces.com/problemset/problem/589/C)|Codeforces|2015-2016 ACM-ICPC, NEERC, Southern Subregional Contest (Online Mirror, ACM-ICPC Rules, Teams Preferred)|9|\n|<ul><li>- [ ] Done</li></ul>|45|[Pumping Stations](http://codeforces.com/problemset/problem/343/E)|Codeforces|Codeforces Round #200 (Div. 1)|9|\n|<ul><li>- [ ] Done</li></ul>|46|[Fox And Polygon](http://codeforces.com/problemset/problem/512/E)|Codeforces|Codeforces Round #290 (Div. 1)|9|\n|<ul><li>- [ ] Done</li></ul>|47|[Surprise me!](http://codeforces.com/problemset/problem/809/E)|Codeforces|Codeforces Round #415 (Div. 1)|9|\n|<ul><li>- [ ] Done</li></ul>|48|[Bear and Cavalry](http://codeforces.com/problemset/problem/573/D)|Codeforces|Codeforces Round #318 [RussianCodeCup Thanks-Round] (Div. 1)|9|\n|<ul><li>- [ ] Done</li></ul>|49|[New Year Shopping](http://codeforces.com/problemset/problem/500/F)|Codeforces|Good Bye 2014|9|\n|<ul><li>- [ ] Done</li></ul>|50|[Quick Tortoise](http://codeforces.com/problemset/problem/232/E)|Codeforces|Codeforces Round #144 (Div. 1)|9|\n|<ul><li>- [ ] Done</li></ul>|51|[Not Quick Transformation](http://codeforces.com/problemset/problem/117/D)|Codeforces|Codeforces Beta Round #88|9|\n|<ul><li>- [ ] Done</li></ul>|52|[Parking Lot](http://codeforces.com/problemset/problem/480/E)|Codeforces|Codeforces Round #274 (Div. 1)|9|\n|<ul><li>- [ ] Done</li></ul>|53|[Maze 2D](http://codeforces.com/problemset/problem/413/E)|Codeforces|Coder-Strike 2014 - Round 2|9|\n|<ul><li>- [ ] Done</li></ul>|54|[Candies and Stones](http://codeforces.com/problemset/problem/101/E)|Codeforces|Codeforces Beta Round #79 (Div. 1 Only)|9|\n|<ul><li>- [ ] Done</li></ul>|55|[Half-decay tree](http://codeforces.com/problemset/problem/68/D)|Codeforces|Codeforces Beta Round #62|9|\n|<ul><li>- [ ] Done</li></ul>|56|[Tavas on the Path](http://codeforces.com/problemset/problem/536/E)|Codeforces|Codeforces Round #299 (Div. 1)|9|\n|<ul><li>- [ ] Done</li></ul>|57|[Formurosa](http://codeforces.com/problemset/problem/217/C)|Codeforces|Codeforces Round #134 (Div. 1) & Codeforces Round #134 (Div. 2)|9|\n|<ul><li>- [ ] Done</li></ul>|58|[Empty Rectangles](http://codeforces.com/problemset/problem/364/E)|Codeforces|Codeforces Round #213 (Div. 1)|10|\n|<ul><li>- [ ] Done</li></ul>|59|[Wizards and Roads](http://codeforces.com/problemset/problem/167/D)|Codeforces|Codeforces Round #114 (Div. 1)|10|\n|<ul><li>- [ ] Done</li></ul>|60|[Red-Black Cobweb](http://codeforces.com/problemset/problem/833/D)|Codeforces|Codeforces Round #426 (Div. 1)|10|\n|<ul><li>- [ ] Done</li></ul>|61|[Furukawa Nagisa's Tree](http://codeforces.com/problemset/problem/434/E)|Codeforces|Codeforces Round #248 (Div. 1)|10|\n|<ul><li>- [ ] Done</li></ul>|62|[Finding lines](http://codeforces.com/problemset/problem/788/D)|Codeforces|Codeforces Round #407 (Div. 1)|10|\n|<ul><li>- [ ] Done</li></ul>|63|[Tree or not Tree](http://codeforces.com/problemset/problem/117/E)|Codeforces|Codeforces Beta Round #88|10|\n|<ul><li>- [ ] Done</li></ul>|64|[Nikita and game](http://codeforces.com/problemset/problem/842/E)|Codeforces|Codeforces Round #430 (Div. 2)|10|\n|<ul><li>- [ ] Done</li></ul>|65|[Logistical Questions](http://codeforces.com/problemset/problem/566/C)|Codeforces|VK Cup 2015 - Finals, online mirror|10|\n|<ul><li>- [ ] Done</li></ul>|66|[Doe Graphs](http://codeforces.com/problemset/problem/232/C)|Codeforces|Codeforces Round #144 (Div. 1) & Codeforces Round #144 (Div. 2)|10|\n"
  },
  {
    "path": "categories/036. Ad-hoc/README.md",
    "content": "# 036. Ad-hoc\n\n\n| Checkbox | ID | Problem Name|Online Judge|Year|Contest|Difficulty Level|\n|:---:|:---:|:---:|:---:|:---:|:---:|:---:|\n|<ul><li>- [ ] Done</li></ul>|1|[Free spots](https://uva.onlinejudge.org/index.php?option=onlinejudge&page=show_problem&problem=1644)|UVA|||1|\n|<ul><li>- [ ] Done</li></ul>|2|[Automatic Answer](https://uva.onlinejudge.org/index.php?option=onlinejudge&page=show_problem&problem=2542)|UVA|||1|\n|<ul><li>- [ ] Done</li></ul>|3|[Digit Counting](https://icpcarchive.ecs.baylor.edu/index.php?option=onlinejudge&page=show_problem&problem=1997)|Live Archive|2007|Asia - Danang|1|\n|<ul><li>- [ ] Done</li></ul>|4|[What's The Frequency, Kenneth?](https://uva.onlinejudge.org/index.php?option=onlinejudge&page=show_problem&problem=440)|UVA|||1|\n|<ul><li>- [ ] Done</li></ul>|5|[Hajj-e-Akbar](https://uva.onlinejudge.org/index.php?option=onlinejudge&page=show_problem&problem=4022)|UVA|||1|\n|<ul><li>- [ ] Done</li></ul>|6|[The Useless Toy](http://codeforces.com/problemset/problem/834/A)|Codeforces||Codeforces Round #426 (Div. 2)|1|\n|<ul><li>- [ ] Done</li></ul>|7|[Egypt](https://uva.onlinejudge.org/index.php?option=onlinejudge&page=show_problem&problem=2954)|UVA|||1|\n|<ul><li>- [ ] Done</li></ul>|8|[Beat the Spread!](https://uva.onlinejudge.org/index.php?option=onlinejudge&page=show_problem&problem=1753)|UVA|||1|\n|<ul><li>- [ ] Done</li></ul>|9|[Schedule of a Married Man](https://icpcarchive.ecs.baylor.edu/index.php?option=onlinejudge&page=show_problem&problem=2203)|Live Archive|2008|Asia - Dhaka|1|\n|<ul><li>- [ ] Done</li></ul>|10|[Ecological Premium](https://uva.onlinejudge.org/index.php?option=onlinejudge&page=show_problem&problem=1241)|UVA|||1|\n|<ul><li>- [ ] Done</li></ul>|11|[STONE GAME ](http://www.spoj.com/problems/RESN04/)|SPOJ|||1|\n|<ul><li>- [ ] Done</li></ul>|12|[Minesweeper](https://uva.onlinejudge.org/index.php?option=onlinejudge&page=show_problem&problem=1130)|UVA|||1|\n|<ul><li>- [ ] Done</li></ul>|13|[WERTYU](https://uva.onlinejudge.org/index.php?option=onlinejudge&page=show_problem&problem=1023)|UVA|||1|\n|<ul><li>- [ ] Done</li></ul>|14|[Find the Telephone](https://uva.onlinejudge.org/index.php?option=onlinejudge&page=show_problem&problem=1862)|UVA|||1|\n|<ul><li>- [ ] Done</li></ul>|15|[Cost Cutting](https://uva.onlinejudge.org/index.php?option=onlinejudge&page=show_problem&problem=2827)|UVA|||1|\n|<ul><li>- [ ] Done</li></ul>|16|[Barcodes](https://icpcarchive.ecs.baylor.edu/index.php?option=onlinejudge&page=show_problem&problem=2787)|Live Archive|2010|World Finals - Harbin|1|\n|<ul><li>- [ ] Done</li></ul>|17|[Combination Lock](https://uva.onlinejudge.org/index.php?option=onlinejudge&page=show_problem&problem=1491)|UVA|||1|\n|<ul><li>- [ ] Done</li></ul>|18|[Enormous Input Test](http://www.spoj.com/problems/INTEST/)|SPOJ|||1|\n|<ul><li>- [ ] Done</li></ul>|19|[Hash it!](http://www.spoj.com/problems/HASHIT/)|SPOJ|||1|\n|<ul><li>- [ ] Done</li></ul>|20|[Colours A, B, C, D](http://www.spoj.com/problems/ABCD/)|SPOJ|||1|\n|<ul><li>- [ ] Done</li></ul>|21|[Request for Proposal](https://uva.onlinejudge.org/index.php?option=onlinejudge&page=show_problem&problem=1082)|UVA|||1|\n|<ul><li>- [ ] Done</li></ul>|22|[Searching for Nessy](https://uva.onlinejudge.org/index.php?option=onlinejudge&page=show_problem&problem=1985)|UVA|||1|\n|<ul><li>- [ ] Done</li></ul>|23|[TEX Quotes](https://uva.onlinejudge.org/index.php?option=onlinejudge&page=show_problem&problem=208)|UVA|||1|\n|<ul><li>- [ ] Done</li></ul>|24|[Lucky Ticket](http://codeforces.com/problemset/problem/146/A)|Codeforces||Codeforces Round #104 (Div. 2)|1|\n|<ul><li>- [ ] Done</li></ul>|25|[Enormous Input Test](http://www.codechef.com/problems/INTEST)|CodeChef|||1|\n|<ul><li>- [ ] Done</li></ul>|26|[The 3n + 1 problem](https://uva.onlinejudge.org/index.php?option=onlinejudge&page=show_problem&problem=36)|UVA|||1|\n|<ul><li>- [ ] Done</li></ul>|27|[Cola](https://uva.onlinejudge.org/index.php?option=onlinejudge&page=show_problem&problem=2091)|UVA|||1|\n|<ul><li>- [ ] Done</li></ul>|28|[VOI09 Tr&#242; ch&#417;i v&#7899;i b?ng s&#7889;](http://vn.spoj.com/problems/LINEGAME/)|SPOJ Vietnam|||1|\n|<ul><li>- [ ] Done</li></ul>|29|[The Blocks Problem](https://uva.onlinejudge.org/index.php?option=onlinejudge&page=show_problem&problem=37)|UVA|||1|\n|<ul><li>- [ ] Done</li></ul>|30|[Word Scramble](https://uva.onlinejudge.org/index.php?option=onlinejudge&page=show_problem&problem=424)|UVA|||1|\n|<ul><li>- [ ] Done</li></ul>|31|[List of Conquests](https://uva.onlinejudge.org/index.php?option=onlinejudge&page=show_problem&problem=1361)|UVA|||1|\n|<ul><li>- [ ] Done</li></ul>|32|[All Integer Average](https://icpcarchive.ecs.baylor.edu/index.php?option=onlinejudge&page=show_problem&problem=1013)|Live Archive|2004|Asia - Dhaka|1|\n|<ul><li>- [ ] Done</li></ul>|33|[Blowing Fuses](https://uva.onlinejudge.org/index.php?option=onlinejudge&page=show_problem&problem=602)|UVA|||1|\n|<ul><li>- [ ] Done</li></ul>|34|[Event Planning](https://uva.onlinejudge.org/index.php?option=onlinejudge&page=show_problem&problem=2595)|UVA|||1|\n|<ul><li>- [ ] Done</li></ul>|35|[Ecological Bin Packing](https://uva.onlinejudge.org/index.php?option=onlinejudge&page=show_problem&problem=38)|UVA|||1|\n|<ul><li>- [ ] Done</li></ul>|36|[The Snail](https://uva.onlinejudge.org/index.php?option=onlinejudge&page=show_problem&problem=514)|UVA|||1|\n|<ul><li>- [ ] Done</li></ul>|37|[Newspaper](https://uva.onlinejudge.org/index.php?option=onlinejudge&page=show_problem&problem=2315)|UVA|||1|\n|<ul><li>- [ ] Done</li></ul>|38|[Mobile Casanova](https://icpcarchive.ecs.baylor.edu/index.php?option=onlinejudge&page=show_problem&problem=190)|Live Archive|2006|Asia - Dhaka|1|\n|<ul><li>- [ ] Done</li></ul>|39|[Horror Dash](https://uva.onlinejudge.org/index.php?option=onlinejudge&page=show_problem&problem=2899)|UVA|||1|\n|<ul><li>- [ ] Done</li></ul>|40|[Rectangles](http://www.spoj.com/problems/AE00/)|SPOJ|||1|\n|<ul><li>- [ ] Done</li></ul>|41|[Soundex Indexing](https://uva.onlinejudge.org/index.php?option=onlinejudge&page=show_problem&problem=680)|UVA|||1|\n|<ul><li>- [ ] Done</li></ul>|42|[Division of Nlogonia](https://uva.onlinejudge.org/index.php?option=onlinejudge&page=show_problem&problem=2493)|UVA|||1|\n|<ul><li>- [ ] Done</li></ul>|43|[Wordfish](https://icpcarchive.ecs.baylor.edu/index.php?option=onlinejudge&page=show_problem&problem=1174)|Live Archive|2006|Asia - Manila|1|\n|<ul><li>- [ ] Done</li></ul>|44|[Is It A Tree?](https://uva.onlinejudge.org/index.php?option=onlinejudge&page=show_problem&problem=556)|UVA|||2|\n|<ul><li>- [ ] Done</li></ul>|45|[Light and Transparencies](https://uva.onlinejudge.org/index.php?option=onlinejudge&page=show_problem&problem=778)|UVA|||2|\n|<ul><li>- [ ] Done</li></ul>|46|[Permutations](https://uva.onlinejudge.org/index.php?option=onlinejudge&page=show_problem&problem=882)|UVA|||2|\n|<ul><li>- [ ] Done</li></ul>|47|[Roman Numerals](https://uva.onlinejudge.org/index.php?option=onlinejudge&page=show_problem&problem=2663)|UVA|||2|\n|<ul><li>- [ ] Done</li></ul>|48|[Find the Format String](https://icpcarchive.ecs.baylor.edu/index.php?option=onlinejudge&page=show_problem&problem=2201)|Live Archive|2008|Asia - Dhaka|2|\n|<ul><li>- [ ] Done</li></ul>|49|[Tic Tac Toe](https://uva.onlinejudge.org/index.php?option=onlinejudge&page=show_problem&problem=1304)|UVA|||2|\n|<ul><li>- [ ] Done</li></ul>|50|[Mapmaker](https://uva.onlinejudge.org/index.php?option=onlinejudge&page=show_problem&problem=330)|UVA|||2|\n|<ul><li>- [ ] Done</li></ul>|51|[Simulation Wizardry](https://uva.onlinejudge.org/index.php?option=onlinejudge&page=show_problem&problem=50)|UVA|||2|\n|<ul><li>- [ ] Done</li></ul>|52|[O: dah dah dah!](https://uva.onlinejudge.org/index.php?option=onlinejudge&page=show_problem&problem=2164)|UVA|||2|\n|<ul><li>- [ ] Done</li></ul>|53|[The decadary watch](https://uva.onlinejudge.org/index.php?option=onlinejudge&page=show_problem&problem=1624)|UVA|||2|\n|<ul><li>- [ ] Done</li></ul>|54|[Self-describing Sequence](https://uva.onlinejudge.org/index.php?option=onlinejudge&page=show_problem&problem=990)|UVA|||2|\n|<ul><li>- [ ] Done</li></ul>|55|[An Experiment by Penny](http://www.spoj.com/problems/CRAN01/)|SPOJ|||2|\n|<ul><li>- [ ] Done</li></ul>|56|[Determine the Shape](https://uva.onlinejudge.org/index.php?option=onlinejudge&page=show_problem&problem=2900)|UVA|||3|\n|<ul><li>- [ ] Done</li></ul>|57|[Major Scales](https://uva.onlinejudge.org/index.php?option=onlinejudge&page=show_problem&problem=1469)|UVA|||3|\n|<ul><li>- [ ] Done</li></ul>|58|[SOLVEIT](http://www.spoj.com/problems/SOLVEIT/)|SPOJ|||4|\n|<ul><li>- [ ] Done</li></ul>|59|[XOR Equation](http://codeforces.com/problemset/problem/627/A)|Codeforces||8VC Venture Cup 2016 - Final Round|4|\n|<ul><li>- [ ] Done</li></ul>|60|[TWO BISHOPS](http://www.spoj.com/problems/TWOBISOP/)|SPOJ|||4|\n|<ul><li>- [ ] Done</li></ul>|61|[Report](http://codeforces.com/problemset/problem/631/C)|Codeforces||Codeforces Round #344 (Div. 2)|4|\n|<ul><li>- [ ] Done</li></ul>|62|[Jerry's Protest](http://codeforces.com/problemset/problem/626/D)|Codeforces||8VC Venture Cup 2016 - Elimination Round|5|\n|<ul><li>- [ ] Done</li></ul>|63|[Dinner Hall](https://uva.onlinejudge.org/index.php?option=onlinejudge&page=show_problem&problem=3341)|UVA|||6|\n|<ul><li>- [ ] Done</li></ul>|64|[Candy Marathon](https://www.urionlinejudge.com.br/judge/en/problems/view/1684)|URI|||7|\n"
  },
  {
    "path": "categories/037. CUET/README.md",
    "content": "# 037. CUET\n\n\n| Checkbox | ID | Problem Name|Online Judge|Contest|Difficulty Level|\n|:---:|:---:|:---:|:---:|:---:|:---:|\n|<ul><li>- [ ] Done</li></ul>|1|[Street Parade](http://www.spoj.com/problems/STPAR/)|SPOJ||1|\n|<ul><li>- [ ] Done</li></ul>|2|[Team Queue](https://uva.onlinejudge.org/index.php?option=onlinejudge&page=show_problem&problem=481)|UVA||1|\n|<ul><li>- [ ] Done</li></ul>|3|[Group Reverse](https://uva.onlinejudge.org/index.php?option=onlinejudge&page=show_problem&problem=2133)|UVA||1|\n|<ul><li>- [ ] Done</li></ul>|4|[Error Correction](https://uva.onlinejudge.org/index.php?option=onlinejudge&page=show_problem&problem=482)|UVA||1|\n|<ul><li>- [ ] Done</li></ul>|5|[Exams](http://codeforces.com/problemset/problem/479/C)|Codeforces|Codeforces Round #274 (Div. 2) & Codeforces Round #274 (Div. 1)|1|\n|<ul><li>- [ ] Done</li></ul>|6|[Laptops](http://codeforces.com/problemset/problem/456/A)|Codeforces|Codeforces Round #260 (Div. 2)|1|\n|<ul><li>- [ ] Done</li></ul>|7|[Mass of Molecule](http://www.spoj.com/problems/MMASS/)|SPOJ||1|\n|<ul><li>- [ ] Done</li></ul>|8|[Queue](http://codeforces.com/problemset/problem/545/D)|Codeforces|Codeforces Round #303 (Div. 2)|1|\n|<ul><li>- [ ] Done</li></ul>|9|[Box of Bricks](https://uva.onlinejudge.org/index.php?option=onlinejudge&page=show_problem&problem=532)|UVA||1|\n|<ul><li>- [ ] Done</li></ul>|10|[WERTYU](https://uva.onlinejudge.org/index.php?option=onlinejudge&page=show_problem&problem=1023)|UVA||1|\n|<ul><li>- [ ] Done</li></ul>|11|[Rails](https://uva.onlinejudge.org/index.php?option=onlinejudge&page=show_problem&problem=455)|UVA||1|\n|<ul><li>- [ ] Done</li></ul>|12|[Transform the Expression](http://www.spoj.com/problems/ONP/)|SPOJ||1|\n|<ul><li>- [ ] Done</li></ul>|13|[Army Buddies](https://uva.onlinejudge.org/index.php?option=onlinejudge&page=show_problem&problem=3778)|UVA||1|\n|<ul><li>- [ ] Done</li></ul>|14|[Adding Reversed Numbers](https://uva.onlinejudge.org/index.php?option=onlinejudge&page=show_problem&problem=654)|UVA||1|\n|<ul><li>- [ ] Done</li></ul>|15|[A and B and Compilation Errors](http://codeforces.com/problemset/problem/519/B)|Codeforces|Codeforces Round #294 (Div. 2)|1|\n|<ul><li>- [ ] Done</li></ul>|16|[Fraction](http://codeforces.com/problemset/problem/854/A)|Codeforces|Codeforces Round #433 (Div. 2, based on Olympiad of Metropolises)|1|\n|<ul><li>- [ ] Done</li></ul>|17|[\"Accordian\" Patience](https://uva.onlinejudge.org/index.php?option=onlinejudge&page=show_problem&problem=63)|UVA||1|\n|<ul><li>- [ ] Done</li></ul>|18|[Web Navigation](http://poj.org/problem?id=1028)|PKU||1|\n|<ul><li>- [ ] Done</li></ul>|19|[Mother bear](https://uva.onlinejudge.org/index.php?option=onlinejudge&page=show_problem&problem=1886)|UVA||1|\n|<ul><li>- [ ] Done</li></ul>|20|[The New Year: Meeting Friends](http://codeforces.com/problemset/problem/723/A)|Codeforces|Codeforces Round #375 (Div. 2)|1|\n|<ul><li>- [ ] Done</li></ul>|21|[Newspaper](https://uva.onlinejudge.org/index.php?option=onlinejudge&page=show_problem&problem=2315)|UVA||1|\n|<ul><li>- [ ] Done</li></ul>|22|[The Bus Driver Problem](https://uva.onlinejudge.org/index.php?option=onlinejudge&page=show_problem&problem=2384)|UVA||1|\n|<ul><li>- [ ] Done</li></ul>|23|[Machined Surfaces](https://uva.onlinejudge.org/index.php?option=onlinejudge&page=show_problem&problem=355)|UVA||1|\n|<ul><li>- [ ] Done</li></ul>|24|[Timofey and cubes](http://codeforces.com/problemset/problem/764/B)|Codeforces|Codeforces Round #395 (Div. 2)|1|\n|<ul><li>- [ ] Done</li></ul>|25|[Sort the Array](http://codeforces.com/problemset/problem/451/B)|Codeforces|Codeforces Round #258 (Div. 2)|1|\n|<ul><li>- [ ] Done</li></ul>|26|[Equation](https://uva.onlinejudge.org/index.php?option=onlinejudge&page=show_problem&problem=668)|UVA||1|\n|<ul><li>- [ ] Done</li></ul>|27|[Unimodal Array](http://codeforces.com/problemset/problem/831/A)|Codeforces|Codeforces Round #424 (Div. 2, rated, based on VK Cup Finals)|1|\n|<ul><li>- [ ] Done</li></ul>|28|[Sale](http://codeforces.com/problemset/problem/34/B)|Codeforces|Codeforces Beta Round #34 (Div. 2)|1|\n|<ul><li>- [ ] Done</li></ul>|29|[Little Girl and Maximum Sum](http://codeforces.com/problemset/problem/276/C)|Codeforces|Codeforces Round #169 (Div. 2)|1|\n|<ul><li>- [ ] Done</li></ul>|30|[Parentheses Balance](https://uva.onlinejudge.org/index.php?option=onlinejudge&page=show_problem&problem=614)|UVA||1|\n|<ul><li>- [ ] Done</li></ul>|31|[Keyboard Layouts](http://codeforces.com/problemset/problem/831/B)|Codeforces|Codeforces Round #424 (Div. 2, rated, based on VK Cup Finals)|1|\n|<ul><li>- [ ] Done</li></ul>|32|[Vanya and Lanterns](http://codeforces.com/problemset/problem/492/B)|Codeforces|Codeforces Round #280 (Div. 2)|1|\n|<ul><li>- [ ] Done</li></ul>|33|[Replacement](http://codeforces.com/problemset/problem/570/C)|Codeforces|Codeforces Round #316 (Div. 2)|2|\n|<ul><li>- [ ] Done</li></ul>|34|[Is it rated?](http://codeforces.com/problemset/problem/807/A)|Codeforces|Codeforces Round #412 (rated, Div. 2, base on VK Cup 2017 Round 3)|2|\n|<ul><li>- [ ] Done</li></ul>|35|[DONALDO](http://www.spoj.com/problems/DONALDO/)|SPOJ||2|\n|<ul><li>- [ ] Done</li></ul>|36|[Ada and Queue](http://www.spoj.com/problems/ADAQUEUE/)|SPOJ||2|\n|<ul><li>- [ ] Done</li></ul>|37|[Chess Tourney](http://codeforces.com/problemset/problem/845/A)|Codeforces|Educational Codeforces Round 27|2|\n|<ul><li>- [ ] Done</li></ul>|38|[Containers](https://uva.onlinejudge.org/index.php?option=onlinejudge&page=show_problem&problem=3503)|UVA||2|\n|<ul><li>- [ ] Done</li></ul>|39|[Borrowers](https://uva.onlinejudge.org/index.php?option=onlinejudge&page=show_problem&problem=166)|UVA||2|\n|<ul><li>- [ ] Done</li></ul>|40|[Grid Successors](https://uva.onlinejudge.org/index.php?option=onlinejudge&page=show_problem&problem=2628)|UVA||2|\n|<ul><li>- [ ] Done</li></ul>|41|[Alternating Current](http://codeforces.com/problemset/problem/343/B)|Codeforces|Codeforces Round #200 (Div. 1) & Codeforces Round #200 (Div. 2)|2|\n|<ul><li>- [ ] Done</li></ul>|42|[Musical Loop](https://uva.onlinejudge.org/index.php?option=onlinejudge&page=show_problem&problem=2491)|UVA||2|\n|<ul><li>- [ ] Done</li></ul>|43|[Chat Order](http://codeforces.com/problemset/problem/637/B)|Codeforces|VK Cup 2016 - Qualification Round 1|2|\n|<ul><li>- [ ] Done</li></ul>|44|[Bear and Prime Numbers](http://codeforces.com/problemset/problem/385/C)|Codeforces|Codeforces Round #226 (Div. 2)|3|\n|<ul><li>- [ ] Done</li></ul>|45|[Time Jumper (Easy)](p?ID=133)|A2 Online Judge||3|\n|<ul><li>- [ ] Done</li></ul>|46|[Pole Position](https://uva.onlinejudge.org/index.php?option=onlinejudge&page=show_problem&problem=3302)|UVA||3|\n|<ul><li>- [ ] Done</li></ul>|47|[z-sort](http://codeforces.com/problemset/problem/652/B)|Codeforces|Educational Codeforces Round 10|3|\n|<ul><li>- [ ] Done</li></ul>|48|[Unique Factorization](https://uva.onlinejudge.org/index.php?option=onlinejudge&page=show_problem&problem=1799)|UVA||3|\n|<ul><li>- [ ] Done</li></ul>|49|[Synching Signals](https://uva.onlinejudge.org/index.php?option=onlinejudge&page=show_problem&problem=408)|UVA||3|\n|<ul><li>- [ ] Done</li></ul>|50|[Formula 1](https://uva.onlinejudge.org/index.php?option=onlinejudge&page=show_problem&problem=2935)|UVA||3|\n|<ul><li>- [ ] Done</li></ul>|51|[Longest Regular Bracket Sequence](http://codeforces.com/problemset/problem/5/C)|Codeforces|Codeforces Beta Round #5|3|\n|<ul><li>- [ ] Done</li></ul>|52|[Minimal string](http://codeforces.com/problemset/problem/797/C)|Codeforces|Educational Codeforces Round 19|4|\n|<ul><li>- [ ] Done</li></ul>|53|[Fruits](http://codeforces.com/problemset/problem/12/C)|Codeforces|Codeforces Beta Round #12 (Div 2 Only)|4|\n|<ul><li>- [ ] Done</li></ul>|54|[The Smallest String Concatenation](http://codeforces.com/problemset/problem/632/C)|Codeforces|Educational Codeforces Round 9|4|\n|<ul><li>- [ ] Done</li></ul>|55|[Brothers](https://uva.onlinejudge.org/index.php?option=onlinejudge&page=show_problem&problem=3339)|UVA||4|\n|<ul><li>- [ ] Done</li></ul>|56|[Maximum Xor Secondary](http://codeforces.com/problemset/problem/280/B)|Codeforces|Codeforces Round #172 (Div. 1) & Codeforces Round #172 (Div. 2)|5|\n"
  },
  {
    "path": "categories/038. Maximum_Matching_Vertex_Cover_on_Bipartite_Graph/README.md",
    "content": "# 038. Maximum_Matching_Vertex_Cover_on_Bipartite_Graph\n\n\n| Checkbox | ID | Problem Name|Online Judge|Year|Contest|Difficulty Level|\n|:---:|:---:|:---:|:---:|:---:|:---:|:---:|\n|<ul><li>- [ ] Done</li></ul>|1|[Fast Maximum Matching](http://www.spoj.com/problems/MATCHING/)|SPOJ|||1|\n|<ul><li>- [ ] Done</li></ul>|2|[Puzzles](http://codeforces.com/problemset/problem/337/A)|Codeforces||Codeforces Round #196 (Div. 2)|1|\n|<ul><li>- [ ] Done</li></ul>|3|[BerSU Ball](http://codeforces.com/problemset/problem/489/B)|Codeforces||Codeforces Round #277.5 (Div. 2)|1|\n|<ul><li>- [ ] Done</li></ul>|4|[Dungeon of Death](http://www.spoj.com/problems/QUEST4/)|SPOJ|||1|\n|<ul><li>- [ ] Done</li></ul>|5|[Vertex Cover](http://www.spoj.com/problems/PT07X/)|SPOJ|||1|\n|<ul><li>- [ ] Done</li></ul>|6|[Queue at the School](http://codeforces.com/problemset/problem/266/B)|Codeforces||Codeforces Round #163 (Div. 2)|1|\n|<ul><li>- [ ] Done</li></ul>|7|[Taxi](http://www.spoj.com/problems/TAXI/)|SPOJ|||1|\n|<ul><li>- [ ] Done</li></ul>|8|[My T-shirt suits me](https://uva.onlinejudge.org/index.php?option=onlinejudge&page=show_problem&problem=1986)|UVA|||2|\n|<ul><li>- [ ] Done</li></ul>|9|[Software Allocation](https://uva.onlinejudge.org/index.php?option=onlinejudge&page=show_problem&problem=195)|UVA|||2|\n|<ul><li>- [ ] Done</li></ul>|10|[Angels and Devils](http://www.spoj.com/problems/ANGELS/)|SPOJ|||2|\n|<ul><li>- [ ] Done</li></ul>|11|[Computer Games II](http://acm.tju.edu.cn/toj/showp2184.html)|TJU|||2|\n|<ul><li>- [ ] Done</li></ul>|12|[Gopher II](https://uva.onlinejudge.org/index.php?option=onlinejudge&page=show_problem&problem=1021)|UVA|||2|\n|<ul><li>- [ ] Done</li></ul>|13|[Muddy Fields](http://www.spoj.com/problems/MUDDY/)|SPOJ|||2|\n|<ul><li>- [ ] Done</li></ul>|14|[The Problem with the Problem Setter](https://uva.onlinejudge.org/index.php?option=onlinejudge&page=show_problem&problem=1033)|UVA|||2|\n|<ul><li>- [ ] Done</li></ul>|15|[SAM I AM](https://uva.onlinejudge.org/index.php?option=onlinejudge&page=show_problem&problem=2414)|UVA|||3|\n|<ul><li>- [ ] Done</li></ul>|16|[Nuts and Bolts](https://uva.onlinejudge.org/index.php?option=onlinejudge&page=show_problem&problem=2079)|UVA|||3|\n|<ul><li>- [ ] Done</li></ul>|17|[Councilling](https://uva.onlinejudge.org/index.php?option=onlinejudge&page=show_problem&problem=1452)|UVA|||3|\n|<ul><li>- [ ] Done</li></ul>|18|[Factors and Multiples](https://uva.onlinejudge.org/index.php?option=onlinejudge&page=show_problem&problem=2100)|UVA|||3|\n|<ul><li>- [ ] Done</li></ul>|19|[The dog task](https://uva.onlinejudge.org/index.php?option=onlinejudge&page=show_problem&problem=611)|UVA|||3|\n|<ul><li>- [ ] Done</li></ul>|20|[Antenna Placement](https://uva.onlinejudge.org/index.php?option=onlinejudge&page=show_problem&problem=1290)|UVA|||3|\n|<ul><li>- [ ] Done</li></ul>|21|[Welcome Party](https://icpcarchive.ecs.baylor.edu/index.php?option=onlinejudge&page=show_problem&problem=4503)|Live Archive|2013|North America - Mid-Central USA|3|\n|<ul><li>- [ ] Done</li></ul>|22|[Gopher Strategy](https://uva.onlinejudge.org/index.php?option=onlinejudge&page=show_problem&problem=1745)|UVA|||4|\n|<ul><li>- [ ] Done</li></ul>|23|[Attacking rooks](https://uva.onlinejudge.org/index.php?option=onlinejudge&page=show_problem&problem=4406)|UVA|||4|\n|<ul><li>- [ ] Done</li></ul>|24|[Two Sets](http://codeforces.com/problemset/problem/468/B)|Codeforces||Codeforces Round #268 (Div. 1) & Codeforces Round #268 (Div. 2)|4|\n|<ul><li>- [ ] Done</li></ul>|25|[Weird Fence](https://uva.onlinejudge.org/index.php?option=onlinejudge&page=show_problem&problem=2229)|UVA|||4|\n|<ul><li>- [ ] Done</li></ul>|26|[Attacking Rooks](https://www.urionlinejudge.com.br/judge/en/problems/view/1490)|URI|||4|\n|<ul><li>- [ ] Done</li></ul>|27|[Drazil and Tiles](http://codeforces.com/problemset/problem/515/D)|Codeforces||Codeforces Round #292 (Div. 2) & Codeforces Round #292 (Div. 1)|4|\n|<ul><li>- [ ] Done</li></ul>|28|[Help General](http://codeforces.com/problemset/problem/142/B)|Codeforces||Codeforces Round #102 (Div. 1) & Codeforces Round #102 (Div. 2)|5|\n|<ul><li>- [ ] Done</li></ul>|29|[Array and Operations](http://codeforces.com/problemset/problem/498/C)|Codeforces||Codeforces Round #284 (Div. 1) & Codeforces Round #284 (Div. 2)|5|\n|<ul><li>- [ ] Done</li></ul>|30|[Non-Secret Cypher](http://codeforces.com/problemset/problem/190/D)|Codeforces||Codeforces Round #120 (Div. 2)|6|\n|<ul><li>- [ ] Done</li></ul>|31|[Hamiltonian Spanning Tree](http://codeforces.com/problemset/problem/618/D)|Codeforces||Wunder Fund Round 2016 (Div. 1 + Div. 2 combined)|6|\n|<ul><li>- [ ] Done</li></ul>|32|[Fox And Dinner](http://codeforces.com/problemset/problem/510/E)|Codeforces||Codeforces Round #290 (Div. 2) & Codeforces Round #290 (Div. 1)|6|\n|<ul><li>- [ ] Done</li></ul>|33|[WTF?](http://codeforces.com/problemset/problem/290/C)|Codeforces||April Fools Day Contest 2013|6|\n|<ul><li>- [ ] Done</li></ul>|34|[Brevity is Soul of Wit](http://codeforces.com/problemset/problem/120/H)|Codeforces||School Regional Team Contest, Saratov, 2011|7|\n|<ul><li>- [ ] Done</li></ul>|35|[George and Interesting Graph](http://codeforces.com/problemset/problem/387/D)|Codeforces||Codeforces Round #227 (Div. 2)|8|\n|<ul><li>- [ ] Done</li></ul>|36|[Antichain](http://codeforces.com/problemset/problem/353/E)|Codeforces||Codeforces Round #205 (Div. 2)|8|\n|<ul><li>- [ ] Done</li></ul>|37|[Tidying Up](http://codeforces.com/problemset/problem/316/C2)|Codeforces||ABBYY Cup 3.0|8|\n|<ul><li>- [ ] Done</li></ul>|38|[Traveling Graph](http://codeforces.com/problemset/problem/21/D)|Codeforces||Codeforces Alpha Round #21 (Codeforces format)|8|\n|<ul><li>- [ ] Done</li></ul>|39|[Birthday](http://codeforces.com/problemset/problem/590/E)|Codeforces||Codeforces Round #327 (Div. 1)|9|\n|<ul><li>- [ ] Done</li></ul>|40|[Shoe Store](http://codeforces.com/problemset/problem/166/D)|Codeforces||Codeforces Round #113 (Div. 2)|9|\n|<ul><li>- [ ] Done</li></ul>|41|[Deciphering](http://codeforces.com/problemset/problem/491/C)|Codeforces||Testing Round #11|9|\n|<ul><li>- [ ] Done</li></ul>|42|[Buying Sets](http://codeforces.com/problemset/problem/103/E)|Codeforces||Codeforces Beta Round #80 (Div. 1 Only)|9|\n|<ul><li>- [ ] Done</li></ul>|43|[Tetris revisited](http://codeforces.com/problemset/problem/86/B)|Codeforces||Yandex.Algorithm 2011 Round 2|9|\n|<ul><li>- [ ] Done</li></ul>|44|[Wizards and Roads](http://codeforces.com/problemset/problem/167/D)|Codeforces||Codeforces Round #114 (Div. 1)|10|\n|<ul><li>- [ ] Done</li></ul>|45|[Party](http://codeforces.com/problemset/problem/575/C)|Codeforces||Bubble Cup 8 - Finals [Online Mirror]|10|\n|<ul><li>- [ ] Done</li></ul>|46|[Sloth](http://codeforces.com/problemset/problem/891/D)|Codeforces||Codeforces Round #446 (Div. 1)|10|\n|<ul><li>- [ ] Done</li></ul>|47|[Recover a functional graph](http://codeforces.com/problemset/problem/739/D)|Codeforces||Codeforces Round #381 (Div. 1)|10|\n|<ul><li>- [ ] Done</li></ul>|48|[Fliperama](http://br.spoj.com/problems/FLIPERA2/)|SPOJ Brazil|||10|\n|<ul><li>- [ ] Done</li></ul>|49|[Permanent](http://codeforces.com/problemset/problem/468/E)|Codeforces||Codeforces Round #268 (Div. 1)|10|\n|<ul><li>- [ ] Done</li></ul>|50|[Tree](http://codeforces.com/problemset/problem/468/D)|Codeforces||Codeforces Round #268 (Div. 1)|10|\n"
  },
  {
    "path": "categories/039. Trie/README.md",
    "content": "# 039. Trie\n\n\n| Checkbox | ID | Problem Name|Online Judge|Year|Contest|Difficulty Level|\n|:---:|:---:|:---:|:---:|:---:|:---:|:---:|\n|<ul><li>- [ ] Done</li></ul>|1|[XOR Sum](https://icpcarchive.ecs.baylor.edu/index.php?option=onlinejudge&page=show_problem&problem=2683)|Live Archive|2009|Asia - Amritapuri|1|\n|<ul><li>- [ ] Done</li></ul>|2|[Phone List](http://www.spoj.com/problems/PHONELST/)|SPOJ|||1|\n|<ul><li>- [ ] Done</li></ul>|3|[Chocolate](http://www.spoj.com/problems/CHOCOLA/)|SPOJ|||1|\n|<ul><li>- [ ] Done</li></ul>|4|[Search in the dictionary!](http://www.spoj.com/problems/DICT/)|SPOJ|||1|\n|<ul><li>- [ ] Done</li></ul>|5|[Phone List](https://uva.onlinejudge.org/index.php?option=onlinejudge&page=show_problem&problem=2347)|UVA|||1|\n|<ul><li>- [ ] Done</li></ul>|6|[Distinct Substrings](http://www.spoj.com/problems/DISUBSTR/)|SPOJ|||1|\n|<ul><li>- [ ] Done</li></ul>|7|[Order statistic set](http://www.spoj.com/problems/ORDERSET/)|SPOJ|||1|\n|<ul><li>- [ ] Done</li></ul>|8|[Multiple Morse Matches](https://icpcarchive.ecs.baylor.edu/index.php?option=onlinejudge&page=show_problem&problem=427)|Live Archive|2001|Europe - Central & Europe - Southwestern|2|\n|<ul><li>- [ ] Done</li></ul>|9|[SubXor](http://www.spoj.com/problems/SUBXOR/)|SPOJ|||2|\n|<ul><li>- [ ] Done</li></ul>|10|[Decoding Morse Sequences](http://www.spoj.com/problems/MORSE/)|SPOJ|||2|\n|<ul><li>- [ ] Done</li></ul>|11|[Phone List](http://acm.tju.edu.cn/toj/showp2935.html)|TJU|||2|\n|<ul><li>- [ ] Done</li></ul>|12|[Diccionário Portuñol](https://icpcarchive.ecs.baylor.edu/index.php?option=onlinejudge&page=show_problem&problem=3803)|Live Archive|2011|Latin America|2|\n|<ul><li>- [ ] Done</li></ul>|13|[Chu&#7895;i t&#7915;](http://vn.spoj.com/problems/CHAIN2/)|SPOJ Vietnam|||2|\n|<ul><li>- [ ] Done</li></ul>|14|[Hyper Prefix Sets](https://uva.onlinejudge.org/index.php?option=onlinejudge&page=show_problem&problem=2483)|UVA|||3|\n|<ul><li>- [ ] Done</li></ul>|15|[Watto and Mechanism](http://codeforces.com/problemset/problem/514/C)|Codeforces||Codeforces Round #291 (Div. 2)|3|\n|<ul><li>- [ ] Done</li></ul>|16|[Vasiliy's Multiset](http://codeforces.com/problemset/problem/706/D)|Codeforces||Codeforces Round #367 (Div. 2)|3|\n|<ul><li>- [ ] Done</li></ul>|17|[Perfect Rhyme](http://www.spoj.com/problems/PRHYME/)|SPOJ|||3|\n|<ul><li>- [ ] Done</li></ul>|18|[Designing T-Shirts](http://www.spoj.com/problems/TAP2012D/)|SPOJ|||3|\n|<ul><li>- [ ] Done</li></ul>|19|[Polo the Penguin and the Tree](http://www.codechef.com/problems/PPTREE)|CodeChef|||3|\n|<ul><li>- [ ] Done</li></ul>|20|[Good Substrings](http://codeforces.com/problemset/problem/271/D)|Codeforces||Codeforces Round #166 (Div. 2)|3|\n|<ul><li>- [ ] Done</li></ul>|21|[Tin m&#7853;t](http://vn.spoj.com/problems/SEC/)|SPOJ Vietnam|||3|\n|<ul><li>- [ ] Done</li></ul>|22|[Xor Queries](http://www.codechef.com/problems/XRQRS)|CodeChef|||3|\n|<ul><li>- [ ] Done</li></ul>|23|[Perfect Security](http://codeforces.com/problemset/problem/923/C)|Codeforces||VK Cup 2018 - Round 1|4|\n|<ul><li>- [ ] Done</li></ul>|24|[Matrix Matcher](https://uva.onlinejudge.org/index.php?option=onlinejudge&page=show_problem&problem=1960)|UVA|||4|\n|<ul><li>- [ ] Done</li></ul>|25|[Frequent Substrings](https://uva.onlinejudge.org/index.php?option=onlinejudge&page=show_problem&problem=1175)|UVA|||4|\n|<ul><li>- [ ] Done</li></ul>|26|[Sevenk Love Oimaster](http://www.spoj.com/problems/JZPGYZ/)|SPOJ|||4|\n|<ul><li>- [ ] Done</li></ul>|27|[Shortest Names](https://uva.onlinejudge.org/index.php?option=onlinejudge&page=show_problem&problem=3950)|UVA|||4|\n|<ul><li>- [ ] Done</li></ul>|28|[Secret Message](http://acm.tju.edu.cn/toj/showp3166.html)|TJU|||4|\n|<ul><li>- [ ] Done</li></ul>|29|[Cellphone Typing](https://uva.onlinejudge.org/index.php?option=onlinejudge&page=show_problem&problem=3971)|UVA|||4|\n|<ul><li>- [ ] Done</li></ul>|30|[Polycarp's phone book](http://codeforces.com/problemset/problem/858/D)|Codeforces||?????????? 2018 - ?????????? ????? 1|4|\n|<ul><li>- [ ] Done</li></ul>|31|[A Lot of Games](http://codeforces.com/problemset/problem/455/B)|Codeforces||Codeforces Round #260 (Div. 1) & Codeforces Round #260 (Div. 2)|4|\n|<ul><li>- [ ] Done</li></ul>|32|[XOR Minimization](http://www.codechef.com/problems/MINXOR)|CodeChef|||4|\n|<ul><li>- [ ] Done</li></ul>|33|[Message Coding](http://www.codechef.com/problems/KGP13G)|CodeChef|||5|\n|<ul><li>- [ ] Done</li></ul>|34|[Subarray Xor](http://www.codechef.com/problems/SUBBXOR)|CodeChef|||5|\n|<ul><li>- [ ] Done</li></ul>|35|[Sausage Maximization](http://codeforces.com/problemset/problem/282/E)|Codeforces||Codeforces Round #173 (Div. 2)|5|\n|<ul><li>- [ ] Done</li></ul>|36|[Vitya and Strange Lesson](http://codeforces.com/problemset/problem/842/D)|Codeforces||Codeforces Round #430 (Div. 2)|5|\n|<ul><li>- [ ] Done</li></ul>|37|[Multiple Morse Matches](https://uva.onlinejudge.org/index.php?option=onlinejudge&page=show_problem&problem=3554)|UVA|||6|\n|<ul><li>- [ ] Done</li></ul>|38|[Tree](p?ID=262)|A2 Online Judge|||7|\n|<ul><li>- [ ] Done</li></ul>|39|[Old Berland Language](http://codeforces.com/problemset/problem/37/C)|Codeforces||Codeforces Beta Round #37|7|\n|<ul><li>- [ ] Done</li></ul>|40|[Beautiful Subarrays](http://codeforces.com/problemset/problem/665/E)|Codeforces||Educational Codeforces Round 12|7|\n|<ul><li>- [ ] Done</li></ul>|41|[Kuro and GCD and XOR and SUM](http://codeforces.com/problemset/problem/979/D)|Codeforces||Codeforces Round #482 (Div. 2)|7|\n|<ul><li>- [ ] Done</li></ul>|42|[Xor-MST](http://codeforces.com/problemset/problem/888/G)|Codeforces||Educational Codeforces Round 32|8|\n"
  },
  {
    "path": "categories/040. backtracking/README.md",
    "content": "# 040. backtracking\n\n\n| Checkbox | ID | Problem Name|Online Judge|Year|Contest|Difficulty Level|\n|:---:|:---:|:---:|:---:|:---:|:---:|:---:|\n|<ul><li>- [ ] Done</li></ul>|1|[Passwords](https://uva.onlinejudge.org/index.php?option=onlinejudge&page=show_problem&problem=569)|UVA|||1|\n|<ul><li>- [ ] Done</li></ul>|2|[Tree Summing](https://uva.onlinejudge.org/index.php?option=onlinejudge&page=show_problem&problem=48)|UVA|||1|\n|<ul><li>- [ ] Done</li></ul>|3|[Don't Get Rooked](https://uva.onlinejudge.org/index.php?option=onlinejudge&page=show_problem&problem=580)|UVA|||1|\n|<ul><li>- [ ] Done</li></ul>|4|[Expert Enough?](https://uva.onlinejudge.org/index.php?option=onlinejudge&page=show_problem&problem=3678)|UVA|||1|\n|<ul><li>- [ ] Done</li></ul>|5|[Dreamoon and WiFi](http://codeforces.com/problemset/problem/476/B)|Codeforces||Codeforces Round #272 (Div. 2)|1|\n|<ul><li>- [ ] Done</li></ul>|6|[23 out of 5](https://uva.onlinejudge.org/index.php?option=onlinejudge&page=show_problem&problem=1285)|UVA|||1|\n|<ul><li>- [ ] Done</li></ul>|7|[Making Jumps](http://www.spoj.com/problems/MKJUMPS/)|SPOJ|||1|\n|<ul><li>- [ ] Done</li></ul>|8|[The Hamming Distance Problem](https://uva.onlinejudge.org/index.php?option=onlinejudge&page=show_problem&problem=670)|UVA|||1|\n|<ul><li>- [ ] Done</li></ul>|9|[8 Queens Chess Problem](https://uva.onlinejudge.org/index.php?option=onlinejudge&page=show_problem&problem=691)|UVA|||1|\n|<ul><li>- [ ] Done</li></ul>|10|[Prime Ring Problem](https://uva.onlinejudge.org/index.php?option=onlinejudge&page=show_problem&problem=465)|UVA|||1|\n|<ul><li>- [ ] Done</li></ul>|11|[The House Of Santa Claus](https://uva.onlinejudge.org/index.php?option=onlinejudge&page=show_problem&problem=227)|UVA|||1|\n|<ul><li>- [ ] Done</li></ul>|12|[Sum It Up](https://uva.onlinejudge.org/index.php?option=onlinejudge&page=show_problem&problem=515)|UVA|||1|\n|<ul><li>- [ ] Done</li></ul>|13|[ABC Path](http://www.spoj.com/problems/ABCPATH/)|SPOJ|||1|\n|<ul><li>- [ ] Done</li></ul>|14|[ALL IZZ WELL](http://www.spoj.com/problems/ALLIZWEL/)|SPOJ|||1|\n|<ul><li>- [ ] Done</li></ul>|15|[Back to the 8-Queens](https://uva.onlinejudge.org/index.php?option=onlinejudge&page=show_problem&problem=2026)|UVA|||1|\n|<ul><li>- [ ] Done</li></ul>|16|[Lotto](https://uva.onlinejudge.org/index.php?option=onlinejudge&page=show_problem&problem=382)|UVA|||1|\n|<ul><li>- [ ] Done</li></ul>|17|[The Sultan's Successors](https://uva.onlinejudge.org/index.php?option=onlinejudge&page=show_problem&problem=103)|UVA|||1|\n|<ul><li>- [ ] Done</li></ul>|18|[At most twice](https://icpcarchive.ecs.baylor.edu/index.php?option=onlinejudge&page=show_problem&problem=5215)|Live Archive|2015|Latin America|1|\n|<ul><li>- [ ] Done</li></ul>|19|[CD](https://uva.onlinejudge.org/index.php?option=onlinejudge&page=show_problem&problem=565)|UVA|||1|\n|<ul><li>- [ ] Done</li></ul>|20|[Hanoi Tower Troubles Again!](https://uva.onlinejudge.org/index.php?option=onlinejudge&page=show_problem&problem=1217)|UVA|||1|\n|<ul><li>- [ ] Done</li></ul>|21|[Division](https://uva.onlinejudge.org/index.php?option=onlinejudge&page=show_problem&problem=666)|UVA|||1|\n|<ul><li>- [ ] Done</li></ul>|22|[Vonny and her dominos](http://www.spoj.com/problems/VONNY/)|SPOJ|||2|\n|<ul><li>- [ ] Done</li></ul>|23|[Another n-Queen Problem](https://uva.onlinejudge.org/index.php?option=onlinejudge&page=show_problem&problem=2136)|UVA|||2|\n|<ul><li>- [ ] Done</li></ul>|24|[Knights in FEN](https://uva.onlinejudge.org/index.php?option=onlinejudge&page=show_problem&problem=1363)|UVA|||2|\n|<ul><li>- [ ] Done</li></ul>|25|[A-Sequence](https://uva.onlinejudge.org/index.php?option=onlinejudge&page=show_problem&problem=1871)|UVA|||2|\n|<ul><li>- [ ] Done</li></ul>|26|[Dividing coins](https://icpcarchive.ecs.baylor.edu/index.php?option=onlinejudge&page=show_problem&problem=3584)|Live Archive|1996|Europe - Northwestern|3|\n|<ul><li>- [ ] Done</li></ul>|27|[Digger Octaves](http://www.spoj.com/problems/UCI2009D/)|SPOJ|||3|\n|<ul><li>- [ ] Done</li></ul>|28|[Winterim Backpacking Trip](https://uva.onlinejudge.org/index.php?option=onlinejudge&page=show_problem&problem=848)|UVA|||3|\n|<ul><li>- [ ] Done</li></ul>|29|[Sum It Up](https://icpcarchive.ecs.baylor.edu/index.php?option=onlinejudge&page=show_problem&problem=3320)|Live Archive|1997|North America - Mid-Central USA|3|\n|<ul><li>- [ ] Done</li></ul>|30|[Playing Boggle](https://uva.onlinejudge.org/index.php?option=onlinejudge&page=show_problem&problem=2258)|UVA|||3|\n|<ul><li>- [ ] Done</li></ul>|31|[Run, Run, Runaround Numbers](http://acm.zju.edu.cn/onlinejudge/showProblem.do?problemCode=1275)|ZOJ|||3|\n|<ul><li>- [ ] Done</li></ul>|32|[The Boggle Game](https://uva.onlinejudge.org/index.php?option=onlinejudge&page=show_problem&problem=545)|UVA|||3|\n|<ul><li>- [ ] Done</li></ul>|33|[Garden of Eden](https://uva.onlinejudge.org/index.php?option=onlinejudge&page=show_problem&problem=942)|UVA|||3|\n|<ul><li>- [ ] Done</li></ul>|34|[Monkeys in a Regular Forest](https://uva.onlinejudge.org/index.php?option=onlinejudge&page=show_problem&problem=717)|UVA|||3|\n|<ul><li>- [ ] Done</li></ul>|35|[Word Index](https://icpcarchive.ecs.baylor.edu/index.php?option=onlinejudge&page=show_problem&problem=3393)|Live Archive|1995|North America - East Central NA|4|\n|<ul><li>- [ ] Done</li></ul>|36|[The Sultan's Successors](https://icpcarchive.ecs.baylor.edu/index.php?option=onlinejudge&page=show_problem&problem=3228)|Live Archive|1991|South Pacific|4|\n|<ul><li>- [ ] Done</li></ul>|37|[Prim](https://uva.onlinejudge.org/index.php?option=onlinejudge&page=show_problem&problem=1748)|UVA|||5|\n|<ul><li>- [ ] Done</li></ul>|38|[Hexagonal Puzzle](https://uva.onlinejudge.org/index.php?option=onlinejudge&page=show_problem&problem=4387)|UVA|||6|\n|<ul><li>- [ ] Done</li></ul>|39|[Graph Coloring](http://codeforces.com/problemset/problem/662/B)|Codeforces||CROC 2016 - Final Round [Private, For Onsite Finalists Only]|6|\n|<ul><li>- [ ] Done</li></ul>|40|[The Boggle Game](https://icpcarchive.ecs.baylor.edu/index.php?option=onlinejudge&page=show_problem&problem=3477)|Live Archive|1997|North America - Pacific Northwest|7|\n|<ul><li>- [ ] Done</li></ul>|41|[This Means War!](https://uva.onlinejudge.org/index.php?option=onlinejudge&page=show_problem&problem=2300)|UVA|||8|\n|<ul><li>- [ ] Done</li></ul>|42|[Knight Moves](https://icpcarchive.ecs.baylor.edu/index.php?option=onlinejudge&page=show_problem&problem=502)|Live Archive|2002|North America - Southeast USA|10|\n"
  },
  {
    "path": "categories/041. bfs/README.md",
    "content": "# 041. bfs\n\n\n| Checkbox | ID | Problem Name|Online Judge|Contest|Difficulty Level|\n|:---:|:---:|:---:|:---:|:---:|:---:|\n|<ul><li>- [ ] Done</li></ul>|1|[Water among Cubes](http://www.spoj.com/problems/WATER/)|SPOJ||1|\n|<ul><li>- [ ] Done</li></ul>|2|[Spreading The News](https://uva.onlinejudge.org/index.php?option=onlinejudge&page=show_problem&problem=865)|UVA||1|\n|<ul><li>- [ ] Done</li></ul>|3|[Isenbaev's Number](http://acm.timus.ru/problem.aspx?space=1&num=1837)|Timus||1|\n|<ul><li>- [ ] Done</li></ul>|4|[All Roads Lead Where?](https://uva.onlinejudge.org/index.php?option=onlinejudge&page=show_problem&problem=950)|UVA||1|\n|<ul><li>- [ ] Done</li></ul>|5|[The Cats and the Mouse](http://www.spoj.com/problems/CATM/)|SPOJ||1|\n|<ul><li>- [ ] Done</li></ul>|6|[A Node Too Far](https://uva.onlinejudge.org/index.php?option=onlinejudge&page=show_problem&problem=272)|UVA||1|\n|<ul><li>- [ ] Done</li></ul>|7|[Playing with Wheels](https://uva.onlinejudge.org/index.php?option=onlinejudge&page=show_problem&problem=1008)|UVA||1|\n|<ul><li>- [ ] Done</li></ul>|8|[Bombs! NO they are Mines!!](https://uva.onlinejudge.org/index.php?option=onlinejudge&page=show_problem&problem=1594)|UVA||1|\n|<ul><li>- [ ] Done</li></ul>|9|[Bicoloring](https://uva.onlinejudge.org/index.php?option=onlinejudge&page=show_problem&problem=945)|UVA||1|\n|<ul><li>- [ ] Done</li></ul>|10|[Cleaning Robot](http://www.spoj.com/problems/CLEANRBT/)|SPOJ||1|\n|<ul><li>- [ ] Done</li></ul>|11|[Knight Moves](https://uva.onlinejudge.org/index.php?option=onlinejudge&page=show_problem&problem=380)|UVA||1|\n|<ul><li>- [ ] Done</li></ul>|12|[Tic-Tac-Toe ( II )](http://www.spoj.com/problems/TOE2/)|SPOJ||1|\n|<ul><li>- [ ] Done</li></ul>|13|[Laser Phones](http://www.spoj.com/problems/MLASERP/)|SPOJ||1|\n|<ul><li>- [ ] Done</li></ul>|14|[Dungeon Master](https://uva.onlinejudge.org/index.php?option=onlinejudge&page=show_problem&problem=473)|UVA||1|\n|<ul><li>- [ ] Done</li></ul>|15|[Bitmap](http://www.spoj.com/problems/BITMAP/)|SPOJ||1|\n|<ul><li>- [ ] Done</li></ul>|16|[Prime Path](http://www.spoj.com/problems/PPATH/)|SPOJ||1|\n|<ul><li>- [ ] Done</li></ul>|17|[Risk](https://uva.onlinejudge.org/index.php?option=onlinejudge&page=show_problem&problem=508)|UVA||1|\n|<ul><li>- [ ] Done</li></ul>|18|[Ones and zeros](http://www.spoj.com/problems/ONEZERO/)|SPOJ||1|\n|<ul><li>- [ ] Done</li></ul>|19|[We Ship Cheap](https://uva.onlinejudge.org/index.php?option=onlinejudge&page=show_problem&problem=703)|UVA||1|\n|<ul><li>- [ ] Done</li></ul>|20|[Jugs](https://uva.onlinejudge.org/index.php?option=onlinejudge&page=show_problem&problem=512)|UVA||2|\n|<ul><li>- [ ] Done</li></ul>|21|[Changing Maze](http://www.spoj.com/problems/CHMAZE/)|SPOJ||2|\n|<ul><li>- [ ] Done</li></ul>|22|[Shipping Routes](https://uva.onlinejudge.org/index.php?option=onlinejudge&page=show_problem&problem=319)|UVA||2|\n|<ul><li>- [ ] Done</li></ul>|23|[The Party, Part I](https://uva.onlinejudge.org/index.php?option=onlinejudge&page=show_problem&problem=1900)|UVA||2|\n|<ul><li>- [ ] Done</li></ul>|24|[Crazy King](https://uva.onlinejudge.org/index.php?option=onlinejudge&page=show_problem&problem=2327)|UVA||2|\n|<ul><li>- [ ] Done</li></ul>|25|[The Monocycle](https://uva.onlinejudge.org/index.php?option=onlinejudge&page=show_problem&problem=988)|UVA||2|\n|<ul><li>- [ ] Done</li></ul>|26|[Fire!](https://uva.onlinejudge.org/index.php?option=onlinejudge&page=show_problem&problem=2671)|UVA||2|\n|<ul><li>- [ ] Done</li></ul>|27|[The Net](https://uva.onlinejudge.org/index.php?option=onlinejudge&page=show_problem&problem=568)|UVA||2|\n|<ul><li>- [ ] Done</li></ul>|28|[The New Villa](https://uva.onlinejudge.org/index.php?option=onlinejudge&page=show_problem&problem=257)|UVA||3|\n|<ul><li>- [ ] Done</li></ul>|29|[THE WEIRD STAIRCASE](http://www.spoj.com/problems/STAR3CAS/)|SPOJ||3|\n|<ul><li>- [ ] Done</li></ul>|30|[9 Puzzle](https://uva.onlinejudge.org/index.php?option=onlinejudge&page=show_problem&problem=2508)|UVA||3|\n|<ul><li>- [ ] Done</li></ul>|31|[Enchanted Forest](https://uva.onlinejudge.org/index.php?option=onlinejudge&page=show_problem&problem=1918)|UVA||3|\n|<ul><li>- [ ] Done</li></ul>|32|[Eternal Truths](https://uva.onlinejudge.org/index.php?option=onlinejudge&page=show_problem&problem=869)|UVA||3|\n|<ul><li>- [ ] Done</li></ul>|33|[Valid BFS?](http://codeforces.com/problemset/problem/1037/D)|Codeforces|Manthan, Codefest 18 (rated, Div. 1 + Div. 2)|3|\n|<ul><li>- [ ] Done</li></ul>|34|[Switch The Lights](https://uva.onlinejudge.org/index.php?option=onlinejudge&page=show_problem&problem=3125)|UVA||4|\n|<ul><li>- [ ] Done</li></ul>|35|[GRAVITY](http://www.spoj.com/problems/GRAVITY/)|SPOJ||5|\n|<ul><li>- [ ] Done</li></ul>|36|[Repeated Substitution with Sed](https://uva.onlinejudge.org/index.php?option=onlinejudge&page=show_problem&problem=3692)|UVA||6|\n|<ul><li>- [ ] Done</li></ul>|37|[TwoKings](http://community.topcoder.com/stat?c=problem_statement&pm=4582)|TopCoder|SRM 243 - Div1 hard] (7218)|9|\n"
  },
  {
    "path": "categories/042. Heavy-Light_Descomposition/README.md",
    "content": "# 042. Heavy-Light_Descomposition\n\n\n| Checkbox | ID | Problem Name|Online Judge|Year|Contest|Difficulty Level|\n|:---:|:---:|:---:|:---:|:---:|:---:|:---:|\n|<ul><li>- [ ] Done</li></ul>|1|[Query on a tree](http://www.spoj.com/problems/QTREE/)|SPOJ|||1|\n|<ul><li>- [ ] Done</li></ul>|2|[Query on a tree II](http://www.spoj.com/problems/QTREE2/)|SPOJ|||1|\n|<ul><li>- [ ] Done</li></ul>|3|[Count on a tree](http://www.spoj.com/problems/COT/)|SPOJ|||1|\n|<ul><li>- [ ] Done</li></ul>|4|[Query on a tree again!](http://www.spoj.com/problems/QTREE3/)|SPOJ|||1|\n|<ul><li>- [ ] Done</li></ul>|5|[OTOCI](http://www.spoj.com/problems/OTOCI/)|SPOJ|||2|\n|<ul><li>- [ ] Done</li></ul>|6|[Can you answer these queries VII](http://www.spoj.com/problems/GSS7/)|SPOJ|||2|\n|<ul><li>- [ ] Done</li></ul>|7|[Query on a tree IV](http://www.spoj.com/problems/QTREE4/)|SPOJ|||2|\n|<ul><li>- [ ] Done</li></ul>|8|[Query on a tree V](http://www.spoj.com/problems/QTREE5/)|SPOJ|||2|\n|<ul><li>- [ ] Done</li></ul>|9|[Count on a tree II](http://www.spoj.com/problems/COT2/)|SPOJ|||2|\n|<ul><li>- [ ] Done</li></ul>|10|[Tree](http://www.codechef.com/problems/RRTREE)|CodeChef|||3|\n|<ul><li>- [ ] Done</li></ul>|11|[Gao on a tree](http://www.spoj.com/problems/GOT/)|SPOJ|||3|\n|<ul><li>- [ ] Done</li></ul>|12|[Prime Distance On Tree](http://www.codechef.com/problems/PRIMEDST)|CodeChef|||3|\n|<ul><li>- [ ] Done</li></ul>|13|[Coloring Trees](http://www.spoj.com/problems/BTCODE_G/)|SPOJ|||3|\n|<ul><li>- [ ] Done</li></ul>|14|[Query on a tree VI](http://www.spoj.com/problems/QTREE6/)|SPOJ|||3|\n|<ul><li>- [ ] Done</li></ul>|15|[Dynamic GCD](http://www.codechef.com/problems/DGCD)|CodeChef|||3|\n|<ul><li>- [ ] Done</li></ul>|16|[Grass Planting](http://www.spoj.com/problems/GRASSPLA/)|SPOJ|||4|\n|<ul><li>- [ ] Done</li></ul>|17|[Tree Again](http://www.codechef.com/problems/RRTREE2)|CodeChef|||4|\n|<ul><li>- [ ] Done</li></ul>|18|[Propagating tree](http://codeforces.com/problemset/problem/383/C)|Codeforces||Codeforces Round #225 (Div. 1) & Codeforces Round #225 (Div. 2)|4|\n|<ul><li>- [ ] Done</li></ul>|19|[Query on a tree VI](http://www.codechef.com/problems/QTREE6)|CodeChef|||4|\n|<ul><li>- [ ] Done</li></ul>|20|[Caves and Tunnels](http://acm.timus.ru/problem.aspx?space=1&num=1553)|Timus|||4|\n|<ul><li>- [ ] Done</li></ul>|21|[Xenia and Tree](http://codeforces.com/problemset/problem/342/E)|Codeforces||Codeforces Round #199 (Div. 2)|4|\n|<ul><li>- [ ] Done</li></ul>|22|[Idols and Fans](http://www.codechef.com/problems/IDOLS)|CodeChef|||4|\n|<ul><li>- [ ] Done</li></ul>|23|[Combat on a tree](http://www.spoj.com/problems/COT3/)|SPOJ|||5|\n|<ul><li>- [ ] Done</li></ul>|24|[Duff in the Army](http://codeforces.com/problemset/problem/587/C)|Codeforces||Codeforces Round #326 (Div. 1) & Codeforces Round #326 (Div. 2)|5|\n|<ul><li>- [ ] Done</li></ul>|25|[Observing the Tree](http://www.codechef.com/problems/QUERY)|CodeChef|||5|\n|<ul><li>- [ ] Done</li></ul>|26|[Imperial roads](https://icpcarchive.ecs.baylor.edu/index.php?option=onlinejudge&page=show_problem&problem=6218)|Live Archive|2017|Latin America|5|\n|<ul><li>- [ ] Done</li></ul>|27|[Fibonacci Numbers on Tree](http://www.codechef.com/problems/FIBTREE)|CodeChef|||6|\n|<ul><li>- [ ] Done</li></ul>|28|[Black and White Tree](http://www.codechef.com/problems/GERALD2)|CodeChef|||6|\n|<ul><li>- [ ] Done</li></ul>|29|[Case of Computer Network](http://codeforces.com/problemset/problem/555/E)|Codeforces||Codeforces Round #310 (Div. 1)|7|\n|<ul><li>- [ ] Done</li></ul>|30|[Push the Flow!](http://www.codechef.com/problems/PUSHFLOW)|CodeChef|||7|\n|<ul><li>- [ ] Done</li></ul>|31|[Happy Tree Party](http://codeforces.com/problemset/problem/593/D)|Codeforces||Codeforces Round #329 (Div. 2)|7|\n|<ul><li>- [ ] Done</li></ul>|32|[Beard Graph](http://codeforces.com/problemset/problem/165/D)|Codeforces||Codeforces Round #112 (Div. 2)|7|\n|<ul><li>- [ ] Done</li></ul>|33|[Scheme](http://codeforces.com/problemset/problem/22/E)|Codeforces||Codeforces Beta Round #22 (Div. 2 Only)|8|\n|<ul><li>- [ ] Done</li></ul>|34|[Graph Game](http://codeforces.com/problemset/problem/235/D)|Codeforces||Codeforces Round #146 (Div. 1)|9|\n|<ul><li>- [ ] Done</li></ul>|35|[...Wait for it...](http://codeforces.com/problemset/problem/696/E)|Codeforces||Codeforces Round #362 (Div. 1)|9|\n|<ul><li>- [ ] Done</li></ul>|36|[Tree or not Tree](http://codeforces.com/problemset/problem/117/E)|Codeforces||Codeforces Beta Round #88|10|\n"
  },
  {
    "path": "categories/043. Non-Classical_Dynamic_Programming/README.md",
    "content": "# 043. Non-Classical_Dynamic_Programming\n\n\n| Checkbox | ID | Problem Name|Online Judge|Difficulty Level|\n|:---:|:---:|:---:|:---:|:---:|\n|<ul><li>- [ ] Done</li></ul>|1|[Unidirectional TSP](https://uva.onlinejudge.org/index.php?option=onlinejudge&page=show_problem&problem=52)|UVA|1|\n|<ul><li>- [ ] Done</li></ul>|2|[How do you add?](https://uva.onlinejudge.org/index.php?option=onlinejudge&page=show_problem&problem=1884)|UVA|1|\n|<ul><li>- [ ] Done</li></ul>|3|[Wedding shopping](https://uva.onlinejudge.org/index.php?option=onlinejudge&page=show_problem&problem=2445)|UVA|1|\n|<ul><li>- [ ] Done</li></ul>|4|[MAXIMUM WOOD CUTTER](http://www.spoj.com/problems/MAXWOODS/)|SPOJ|1|\n|<ul><li>- [ ] Done</li></ul>|5|[0110SS](http://www.spoj.com/problems/IWGBS/)|SPOJ|1|\n|<ul><li>- [ ] Done</li></ul>|6|[Save Thy Toys](http://www.spoj.com/problems/DCEPC501/)|SPOJ|1|\n|<ul><li>- [ ] Done</li></ul>|7|[Divisibility](https://uva.onlinejudge.org/index.php?option=onlinejudge&page=show_problem&problem=977)|UVA|1|\n|<ul><li>- [ ] Done</li></ul>|8|[Philosophers Stone](http://www.spoj.com/problems/BYTESM2/)|SPOJ|1|\n|<ul><li>- [ ] Done</li></ul>|9|[DIE HARD](http://www.spoj.com/problems/DIEHARD/)|SPOJ|1|\n|<ul><li>- [ ] Done</li></ul>|10|[Homer Simpson](https://uva.onlinejudge.org/index.php?option=onlinejudge&page=show_problem&problem=1406)|UVA|1|\n|<ul><li>- [ ] Done</li></ul>|11|[Cutting Sticks](https://uva.onlinejudge.org/index.php?option=onlinejudge&page=show_problem&problem=944)|UVA|1|\n|<ul><li>- [ ] Done</li></ul>|12|[Piggy-Bank](http://www.spoj.com/problems/PIGBANK/)|SPOJ|1|\n|<ul><li>- [ ] Done</li></ul>|13|[Pilots](http://www.spoj.com/problems/MPILOT/)|SPOJ|1|\n|<ul><li>- [ ] Done</li></ul>|14|[Easy Jug](http://www.spoj.com/problems/MAY99_3/)|SPOJ|1|\n|<ul><li>- [ ] Done</li></ul>|15|[Jugs](https://uva.onlinejudge.org/index.php?option=onlinejudge&page=show_problem&problem=512)|UVA|2|\n|<ul><li>- [ ] Done</li></ul>|16|[Simple Minded Hashing](https://uva.onlinejudge.org/index.php?option=onlinejudge&page=show_problem&problem=1853)|UVA|2|\n|<ul><li>- [ ] Done</li></ul>|17|[Game Show Math](https://uva.onlinejudge.org/index.php?option=onlinejudge&page=show_problem&problem=1341)|UVA|2|\n|<ul><li>- [ ] Done</li></ul>|18|[Squares](https://uva.onlinejudge.org/index.php?option=onlinejudge&page=show_problem&problem=2402)|UVA|2|\n|<ul><li>- [ ] Done</li></ul>|19|[Bar Codes](https://uva.onlinejudge.org/index.php?option=onlinejudge&page=show_problem&problem=1662)|UVA|2|\n|<ul><li>- [ ] Done</li></ul>|20|[sqrt log sin](https://uva.onlinejudge.org/index.php?option=onlinejudge&page=show_problem&problem=2750)|UVA|2|\n|<ul><li>- [ ] Done</li></ul>|21|[Chest of Drawers](https://uva.onlinejudge.org/index.php?option=onlinejudge&page=show_problem&problem=2415)|UVA|2|\n|<ul><li>- [ ] Done</li></ul>|22|[The Marriage Interview :-)](https://uva.onlinejudge.org/index.php?option=onlinejudge&page=show_problem&problem=1387)|UVA|2|\n|<ul><li>- [ ] Done</li></ul>|23|[Flight Planner](https://uva.onlinejudge.org/index.php?option=onlinejudge&page=show_problem&problem=1278)|UVA|2|\n|<ul><li>- [ ] Done</li></ul>|24|[Spreadsheet](https://uva.onlinejudge.org/index.php?option=onlinejudge&page=show_problem&problem=132)|UVA|2|\n|<ul><li>- [ ] Done</li></ul>|25|[Marks Distribution](https://uva.onlinejudge.org/index.php?option=onlinejudge&page=show_problem&problem=1851)|UVA|2|\n|<ul><li>- [ ] Done</li></ul>|26|[String Popping](https://uva.onlinejudge.org/index.php?option=onlinejudge&page=show_problem&problem=3702)|UVA|3|\n|<ul><li>- [ ] Done</li></ul>|27|[Test the Rods](https://uva.onlinejudge.org/index.php?option=onlinejudge&page=show_problem&problem=1027)|UVA|3|\n|<ul><li>- [ ] Done</li></ul>|28|[Lowest Price in Town](https://uva.onlinejudge.org/index.php?option=onlinejudge&page=show_problem&problem=1921)|UVA|3|\n|<ul><li>- [ ] Done</li></ul>|29|[Determine it](https://uva.onlinejudge.org/index.php?option=onlinejudge&page=show_problem&problem=1461)|UVA|3|\n|<ul><li>- [ ] Done</li></ul>|30|[Bribe the Prisoners](http://www.spoj.com/problems/GCJ1C09C/)|SPOJ|3|\n|<ul><li>- [ ] Done</li></ul>|31|[The Poor Giant](https://uva.onlinejudge.org/index.php?option=onlinejudge&page=show_problem&problem=1629)|UVA|3|\n|<ul><li>- [ ] Done</li></ul>|32|[A Grouping Problem](https://uva.onlinejudge.org/index.php?option=onlinejudge&page=show_problem&problem=1967)|UVA|3|\n|<ul><li>- [ ] Done</li></ul>|33|[INVITATION FOR TECHOFES](http://www.spoj.com/problems/TECHOFES/)|SPOJ|4|\n|<ul><li>- [ ] Done</li></ul>|34|[JUMPING DORA](http://www.spoj.com/problems/JUMPDORA/)|SPOJ|5|\n|<ul><li>- [ ] Done</li></ul>|35|[GO FOR DIAMONDS](http://www.spoj.com/problems/GO4DIMON/)|SPOJ|5|\n|<ul><li>- [ ] Done</li></ul>|36|[IPL - CRICKET TOURNAMENT](http://www.spoj.com/problems/IPL1/)|SPOJ|5|\n"
  },
  {
    "path": "categories/044. KMP/README.md",
    "content": "# 044. KMP\n\n\n| Checkbox | ID | Problem Name|Online Judge|Year|Contest|Difficulty Level|\n|:---:|:---:|:---:|:---:|:---:|:---:|:---:|\n|<ul><li>- [ ] Done</li></ul>|1|[Periodic Strings](https://uva.onlinejudge.org/index.php?option=onlinejudge&page=show_problem&problem=396)|UVA|||1|\n|<ul><li>- [ ] Done</li></ul>|2|[Power Strings](https://uva.onlinejudge.org/index.php?option=onlinejudge&page=show_problem&problem=1239)|UVA|||1|\n|<ul><li>- [ ] Done</li></ul>|3|[Extend to Palindrome](http://www.spoj.com/problems/EPALIN/)|SPOJ|||1|\n|<ul><li>- [ ] Done</li></ul>|4|[A Needle in the Haystack](http://www.spoj.com/problems/NHAY/)|SPOJ|||1|\n|<ul><li>- [ ] Done</li></ul>|5|[I Love Strings!!](https://uva.onlinejudge.org/index.php?option=onlinejudge&page=show_problem&problem=1620)|UVA|||1|\n|<ul><li>- [ ] Done</li></ul>|6|[Period](http://www.spoj.com/problems/PERIOD/)|SPOJ|||1|\n|<ul><li>- [ ] Done</li></ul>|7|[Period](https://icpcarchive.ecs.baylor.edu/index.php?option=onlinejudge&page=show_problem&problem=1027)|Live Archive|2004|Europe - Southeastern|1|\n|<ul><li>- [ ] Done</li></ul>|8|[Pattern Find](http://www.spoj.com/problems/NAJPF/)|SPOJ|||1|\n|<ul><li>- [ ] Done</li></ul>|9|[Find String Roots](http://www.spoj.com/problems/FINDSR/)|SPOJ|||1|\n|<ul><li>- [ ] Done</li></ul>|10|[The hunt for Gollum](http://www.spoj.com/problems/ARDA1/)|SPOJ|||2|\n|<ul><li>- [ ] Done</li></ul>|11|[String Tale](http://acm.timus.ru/problem.aspx?space=1&num=1423)|Timus|||2|\n|<ul><li>- [ ] Done</li></ul>|12|[File Recover Testing](http://www.spoj.com/problems/FILRTEST/)|SPOJ|||2|\n|<ul><li>- [ ] Done</li></ul>|13|[Remove The String](http://www.spoj.com/problems/PSTRING/)|SPOJ|||2|\n|<ul><li>- [ ] Done</li></ul>|14|[Password](http://codeforces.com/problemset/problem/126/B)|Codeforces||Codeforces Beta Round #93 (Div. 1 Only) & Codeforces Beta Round #93 (Div. 2 Only)|2|\n|<ul><li>- [ ] Done</li></ul>|15|[Extend to Palindrome](https://uva.onlinejudge.org/index.php?option=onlinejudge&page=show_problem&problem=2470)|UVA|||2|\n|<ul><li>- [ ] Done</li></ul>|16|[String Factoring](https://uva.onlinejudge.org/index.php?option=onlinejudge&page=show_problem&problem=1963)|UVA|||3|\n|<ul><li>- [ ] Done</li></ul>|17|[Abnormal 89's](https://uva.onlinejudge.org/index.php?option=onlinejudge&page=show_problem&problem=2988)|UVA|||3|\n|<ul><li>- [ ] Done</li></ul>|18|[Scrolling Sign](https://uva.onlinejudge.org/index.php?option=onlinejudge&page=show_problem&problem=2623)|UVA|||3|\n|<ul><li>- [ ] Done</li></ul>|19|[Finding Palindromes](http://www.spoj.com/problems/VPALIN/)|SPOJ|||3|\n|<ul><li>- [ ] Done</li></ul>|20|[Test](http://www.spoj.com/problems/CF25E/)|SPOJ|||3|\n|<ul><li>- [ ] Done</li></ul>|21|[Dancing the Cheeky-Cheeky](https://uva.onlinejudge.org/index.php?option=onlinejudge&page=show_problem&problem=2447)|UVA|||3|\n|<ul><li>- [ ] Done</li></ul>|22|[Secret Word](https://uva.onlinejudge.org/index.php?option=onlinejudge&page=show_problem&problem=3911)|UVA|||3|\n|<ul><li>- [ ] Done</li></ul>|23|[Sevenk Love Oimaster](http://www.spoj.com/problems/JZPGYZ/)|SPOJ|||4|\n|<ul><li>- [ ] Done</li></ul>|24|[Tavas and Malekas](http://codeforces.com/problemset/problem/535/D)|Codeforces||Codeforces Round #299 (Div. 2) & Codeforces Round #299 (Div. 1)|4|\n|<ul><li>- [ ] Done</li></ul>|25|[Prefixes and Suffixes](http://codeforces.com/problemset/problem/432/D)|Codeforces||Codeforces Round #246 (Div. 2)|4|\n|<ul><li>- [ ] Done</li></ul>|26|[Matrix Matcher](https://uva.onlinejudge.org/index.php?option=onlinejudge&page=show_problem&problem=1960)|UVA|||4|\n|<ul><li>- [ ] Done</li></ul>|27|[MUH and Cube Walls](http://codeforces.com/problemset/problem/471/D)|Codeforces||Codeforces Round #269 (Div. 2)|4|\n|<ul><li>- [ ] Done</li></ul>|28|[Cow Patterns](http://www.spoj.com/problems/CPATTERN/)|SPOJ|||5|\n|<ul><li>- [ ] Done</li></ul>|29|[Lucky Common Subsequence](http://codeforces.com/problemset/problem/346/B)|Codeforces||Codeforces Round #201 (Div. 1) & Codeforces Round #201 (Div. 2)|5|\n|<ul><li>- [ ] Done</li></ul>|30|[Obsessive String](http://codeforces.com/problemset/problem/494/B)|Codeforces||Codeforces Round #282 (Div. 1) & Codeforces Round #282 (Div. 2)|5|\n|<ul><li>- [ ] Done</li></ul>|31|[Match Maker](http://www.spoj.com/problems/ANARC08C/)|SPOJ|||6|\n|<ul><li>- [ ] Done</li></ul>|32|[Caesar Cipher](https://uva.onlinejudge.org/index.php?option=onlinejudge&page=show_problem&problem=4282)|UVA|||6|\n|<ul><li>- [ ] Done</li></ul>|33|[Messenger](http://codeforces.com/problemset/problem/631/D)|Codeforces||Codeforces Round #344 (Div. 2)|6|\n|<ul><li>- [ ] Done</li></ul>|34|[Untitled Problem](http://www.spoj.com/problems/UNTITLED/)|SPOJ|||7|\n|<ul><li>- [ ] Done</li></ul>|35|[String Transformation](http://codeforces.com/problemset/problem/119/D)|Codeforces||Codeforces Beta Round #90|9|\n"
  },
  {
    "path": "categories/045. string_suffix_structures/README.md",
    "content": "# 045. string_suffix_structures\n\n\n| Checkbox | ID | Problem Name|Online Judge|Contest|Difficulty Level|\n|:---:|:---:|:---:|:---:|:---:|:---:|\n|<ul><li>- [ ] Done</li></ul>|1|[Password](http://codeforces.com/problemset/problem/126/B)|Codeforces|Codeforces Beta Round #93 (Div. 1 Only) & Codeforces Beta Round #93 (Div. 2 Only)|2|\n|<ul><li>- [ ] Done</li></ul>|2|[Watto and Mechanism](http://codeforces.com/problemset/problem/514/C)|Codeforces|Codeforces Round #291 (Div. 2)|3|\n|<ul><li>- [ ] Done</li></ul>|3|[Tavas and Malekas](http://codeforces.com/problemset/problem/535/D)|Codeforces|Codeforces Round #299 (Div. 2) & Codeforces Round #299 (Div. 1)|4|\n|<ul><li>- [ ] Done</li></ul>|4|[Prefixes and Suffixes](http://codeforces.com/problemset/problem/432/D)|Codeforces|Codeforces Round #246 (Div. 2)|4|\n|<ul><li>- [ ] Done</li></ul>|5|[MUH and Cube Walls](http://codeforces.com/problemset/problem/471/D)|Codeforces|Codeforces Round #269 (Div. 2)|4|\n|<ul><li>- [ ] Done</li></ul>|6|[Spy Syndrome 2](http://codeforces.com/problemset/problem/633/C)|Codeforces|Manthan, Codefest 16|5|\n|<ul><li>- [ ] Done</li></ul>|7|[Om Nom and Necklace](http://codeforces.com/problemset/problem/526/D)|Codeforces|ZeptoLab Code Rush 2015|6|\n|<ul><li>- [ ] Done</li></ul>|8|[Match & Catch](http://codeforces.com/problemset/problem/427/D)|Codeforces|Codeforces Round #244 (Div. 2)|6|\n|<ul><li>- [ ] Done</li></ul>|9|[Martian Strings](http://codeforces.com/problemset/problem/149/E)|Codeforces|Codeforces Round #106 (Div. 2)|6|\n|<ul><li>- [ ] Done</li></ul>|10|[Messenger](http://codeforces.com/problemset/problem/631/D)|Codeforces|Codeforces Round #344 (Div. 2)|6|\n|<ul><li>- [ ] Done</li></ul>|11|[String](http://codeforces.com/problemset/problem/128/B)|Codeforces|Codeforces Beta Round #94 (Div. 1 Only) & Codeforces Beta Round #94 (Div. 2 Only)|6|\n|<ul><li>- [ ] Done</li></ul>|12|[Cyclical Quest](http://codeforces.com/problemset/problem/235/C)|Codeforces|Codeforces Round #146 (Div. 1) & Codeforces Round #146 (Div. 2)|7|\n|<ul><li>- [ ] Done</li></ul>|13|[Valera and Swaps](http://codeforces.com/problemset/problem/441/D)|Codeforces|Codeforces Round #252 (Div. 2)|7|\n|<ul><li>- [ ] Done</li></ul>|14|[Encoding](http://codeforces.com/problemset/problem/533/F)|Codeforces|VK Cup 2015 - Round 2 (unofficial online mirror, Div. 1 only)|7|\n|<ul><li>- [ ] Done</li></ul>|15|[Votka and String](http://www.spoj.com/problems/VOTAS/)|SPOJ||7|\n|<ul><li>- [ ] Done</li></ul>|16|[Ann and Half-Palindrome](http://codeforces.com/problemset/problem/557/E)|Codeforces|Codeforces Round #311 (Div. 2)|7|\n|<ul><li>- [ ] Done</li></ul>|17|[Mike and Friends](http://codeforces.com/problemset/problem/547/E)|Codeforces|Codeforces Round #305 (Div. 1)|8|\n|<ul><li>- [ ] Done</li></ul>|18|[Three strings](http://codeforces.com/problemset/problem/452/E)|Codeforces|MemSQL Start[c]UP 2.0 - Round 1|8|\n|<ul><li>- [ ] Done</li></ul>|19|[Deletion of Repeats](http://codeforces.com/problemset/problem/19/C)|Codeforces|Codeforces Beta Round #19|8|\n|<ul><li>- [ ] Done</li></ul>|20|[Paper task](http://codeforces.com/problemset/problem/653/F)|Codeforces|IndiaHacks 2016 - Online Edition (Div. 1 + Div. 2)|8|\n|<ul><li>- [ ] Done</li></ul>|21|[Little Elephant and Strings](http://codeforces.com/problemset/problem/204/E)|Codeforces|Codeforces Round #129 (Div. 1)|8|\n|<ul><li>- [ ] Done</li></ul>|22|[String](http://codeforces.com/problemset/problem/123/D)|Codeforces|Codeforces Beta Round #92 (Div. 1 Only)|8|\n|<ul><li>- [ ] Done</li></ul>|23|[Good Substrings](http://codeforces.com/problemset/problem/316/G2)|Codeforces|ABBYY Cup 3.0|8|\n|<ul><li>- [ ] Done</li></ul>|24|[Genetic engineering](http://codeforces.com/problemset/problem/86/C)|Codeforces|Yandex.Algorithm 2011 Round 2|8|\n|<ul><li>- [ ] Done</li></ul>|25|[Fence](http://codeforces.com/problemset/problem/232/D)|Codeforces|Codeforces Round #144 (Div. 1)|9|\n|<ul><li>- [ ] Done</li></ul>|26|[Forensic Examination](http://codeforces.com/problemset/problem/666/E)|Codeforces|Codeforces Round #349 (Div. 1)|9|\n|<ul><li>- [ ] Done</li></ul>|27|[Cool Slogans](http://codeforces.com/problemset/problem/700/E)|Codeforces|Codeforces Round #364 (Div. 1)|9|\n|<ul><li>- [ ] Done</li></ul>|28|[And Yet Another Bracket Sequence](http://codeforces.com/problemset/problem/524/F)|Codeforces|VK Cup 2015 - Round 1|9|\n|<ul><li>- [ ] Done</li></ul>|29|[Xenia and String Problem](http://codeforces.com/problemset/problem/356/E)|Codeforces|Codeforces Round #207 (Div. 1)|9|\n|<ul><li>- [ ] Done</li></ul>|30|[Expensive Strings](http://codeforces.com/problemset/problem/616/F)|Codeforces|Educational Codeforces Round 5|9|\n|<ul><li>- [ ] Done</li></ul>|31|[Have You Ever Heard About the Word?](http://codeforces.com/problemset/problem/319/D)|Codeforces|Codeforces Round #189 (Div. 1)|9|\n|<ul><li>- [ ] Done</li></ul>|32|[Good Substrings](http://codeforces.com/problemset/problem/316/G3)|Codeforces|ABBYY Cup 3.0|9|\n|<ul><li>- [ ] Done</li></ul>|33|[Arpa’s abnormal DNA and Mehrdad’s deep interest](http://codeforces.com/problemset/problem/741/E)|Codeforces|Codeforces Round #383 (Div. 1)|10|\n|<ul><li>- [ ] Done</li></ul>|34|[Cutting the Line](http://codeforces.com/problemset/problem/594/E)|Codeforces|Codeforces Round #330 (Div. 1)|10|\n|<ul><li>- [ ] Done</li></ul>|35|[Misha and LCP on Tree](http://codeforces.com/problemset/problem/504/E)|Codeforces|Codeforces Round #285 (Div. 1)|10|\n"
  },
  {
    "path": "categories/046. expresison_and_parsing/README.md",
    "content": "# 046. expresison_and_parsing\n\n\n| Checkbox | ID | Problem Name|Online Judge|Contest|Difficulty Level|\n|:---:|:---:|:---:|:---:|:---:|:---:|\n|<ul><li>- [ ] Done</li></ul>|1|[Borze](http://codeforces.com/problemset/problem/32/B)|Codeforces|Codeforces Beta Round #32 (Div. 2, Codeforces format)|1|\n|<ul><li>- [ ] Done</li></ul>|2|[Transform the Expression](http://www.spoj.com/problems/ONP/)|SPOJ||1|\n|<ul><li>- [ ] Done</li></ul>|3|[Complicated Expressions](http://www.spoj.com/problems/CMEXPR/)|SPOJ||2|\n|<ul><li>- [ ] Done</li></ul>|4|[Any fool can do it](http://www.spoj.com/problems/FOOL/)|SPOJ||2|\n|<ul><li>- [ ] Done</li></ul>|5|[Going to school](http://www.spoj.com/problems/GS/)|SPOJ||3|\n|<ul><li>- [ ] Done</li></ul>|6|[Replace To Make Regular Bracket Sequence](http://codeforces.com/problemset/problem/612/C)|Codeforces|Educational Codeforces Round 4|3|\n|<ul><li>- [ ] Done</li></ul>|7|[Page Numbers](http://codeforces.com/problemset/problem/34/C)|Codeforces|Codeforces Beta Round #34 (Div. 2)|4|\n|<ul><li>- [ ] Done</li></ul>|8|[Rebus](http://codeforces.com/problemset/problem/663/A)|Codeforces|Codeforces Round #347 (Div. 1) & Codeforces Round #347 (Div. 2)|4|\n|<ul><li>- [ ] Done</li></ul>|9|[Facetook Priority Wall](http://codeforces.com/problemset/problem/75/B)|Codeforces|Codeforces Beta Round #67 (Div. 2)|5|\n|<ul><li>- [ ] Done</li></ul>|10|[Bracket Sequence](http://codeforces.com/problemset/problem/223/A)|Codeforces|Codeforces Round #138 (Div. 1) & Codeforces Round #138 (Div. 2)|5|\n|<ul><li>- [ ] Done</li></ul>|11|[Email address](http://codeforces.com/problemset/problem/41/C)|Codeforces|Codeforces Beta Round #40 (Div. 2)|5|\n|<ul><li>- [ ] Done</li></ul>|12|[Boolean Logic](http://www.spoj.com/problems/BOOLE/)|SPOJ||5|\n|<ul><li>- [ ] Done</li></ul>|13|[Bitwise Formula](http://codeforces.com/problemset/problem/778/B)|Codeforces|Codeforces Round #402 (Div. 1) & Codeforces Round #402 (Div. 2)|5|\n|<ul><li>- [ ] Done</li></ul>|14|[Cells](http://www.spoj.com/problems/IPCELLS/)|SPOJ||5|\n|<ul><li>- [ ] Done</li></ul>|15|[Text Messaging](http://codeforces.com/problemset/problem/70/B)|Codeforces|Codeforces Beta Round #64|6|\n|<ul><li>- [ ] Done</li></ul>|16|[Title](http://codeforces.com/problemset/problem/59/C)|Codeforces|Codeforces Beta Round #55 (Div. 2)|6|\n|<ul><li>- [ ] Done</li></ul>|17|[A - Comparison Expressions](http://www.spoj.com/problems/BOCOMP/)|SPOJ||6|\n|<ul><li>- [ ] Done</li></ul>|18|[Vanya and Brackets](http://codeforces.com/problemset/problem/552/E)|Codeforces|Codeforces Round #308 (Div. 2)|6|\n|<ul><li>- [ ] Done</li></ul>|19|[Programming Language](http://codeforces.com/problemset/problem/200/D)|Codeforces|Codeforces Round #126 (Div. 2)|7|\n|<ul><li>- [ ] Done</li></ul>|20|[Try and Catch](http://codeforces.com/problemset/problem/195/C)|Codeforces|Codeforces Round #123 (Div. 2)|7|\n|<ul><li>- [ ] Done</li></ul>|21|[Corporation Mail](http://codeforces.com/problemset/problem/56/C)|Codeforces|Codeforces Beta Round #52 (Div. 2)|7|\n|<ul><li>- [ ] Done</li></ul>|22|[bHTML Tables Analisys](http://codeforces.com/problemset/problem/51/B)|Codeforces|Codeforces Beta Round #48|7|\n|<ul><li>- [ ] Done</li></ul>|23|[C*++ Calculations](http://codeforces.com/problemset/problem/39/A)|Codeforces|School Team Contest #1 (Winter Computer School 2010/11)|8|\n|<ul><li>- [ ] Done</li></ul>|24|[Defining Macros](http://codeforces.com/problemset/problem/7/E)|Codeforces|Codeforces Beta Round #7|8|\n|<ul><li>- [ ] Done</li></ul>|25|[Expression](http://codeforces.com/problemset/problem/64/B)|Codeforces|Unknown Language Round #1|8|\n|<ul><li>- [ ] Done</li></ul>|26|[Widget Library](http://codeforces.com/problemset/problem/89/B)|Codeforces|Codeforces Beta Round #74 (Div. 1 Only) & Codeforces Beta Round #74 (Div. 2 Only)|8|\n|<ul><li>- [ ] Done</li></ul>|27|[BHTML+BCSS](http://codeforces.com/problemset/problem/172/E)|Codeforces|Croc Champ 2012 - Qualification Round|9|\n|<ul><li>- [ ] Done</li></ul>|28|[Formurosa](http://codeforces.com/problemset/problem/217/C)|Codeforces|Codeforces Round #134 (Div. 1) & Codeforces Round #134 (Div. 2)|9|\n|<ul><li>- [ ] Done</li></ul>|29|[Unambiguous Arithmetic Expression](http://codeforces.com/problemset/problem/115/D)|Codeforces|Codeforces Beta Round #87 (Div. 1 Only)|9|\n|<ul><li>- [ ] Done</li></ul>|30|[Perse-script](http://codeforces.com/problemset/problem/72/D)|Codeforces|Unknown Language Round #2|10|\n|<ul><li>- [ ] Done</li></ul>|31|[Domain](http://codeforces.com/problemset/problem/64/F)|Codeforces|Unknown Language Round #1|10|\n|<ul><li>- [ ] Done</li></ul>|32|[Stack](http://codeforces.com/problemset/problem/188/H)|Codeforces|Surprise Language Round #6|10|\n|<ul><li>- [ ] Done</li></ul>|33|[Boolean Function](http://codeforces.com/problemset/problem/582/E)|Codeforces|Codeforces Round #323 (Div. 1)|10|\n"
  },
  {
    "path": "categories/047. Meet_in_The_Middle/README.md",
    "content": "# 047. Meet_in_The_Middle\n\n\n| Checkbox | ID | Problem Name|Online Judge|Year|Contest|Difficulty Level|\n|:---:|:---:|:---:|:---:|:---:|:---:|:---:|\n|<ul><li>- [ ] Done</li></ul>|1|[ABCDEF](http://www.spoj.com/problems/ABCDEF/)|SPOJ|||1|\n|<ul><li>- [ ] Done</li></ul>|2|[4 Values whose Sum is 0](http://acm.tju.edu.cn/toj/showp2407.html)|TJU|||1|\n|<ul><li>- [ ] Done</li></ul>|3|[Subset Sums](http://www.spoj.com/problems/SUBSUMS/)|SPOJ|||1|\n|<ul><li>- [ ] Done</li></ul>|4|[4 values whose sum is 0](http://www.spoj.com/problems/SUMFOUR/)|SPOJ|||1|\n|<ul><li>- [ ] Done</li></ul>|5|[4 Values whose Sum is 0](https://icpcarchive.ecs.baylor.edu/index.php?option=onlinejudge&page=show_problem&problem=1507)|Live Archive|2005|Europe - Southwestern|1|\n|<ul><li>- [ ] Done</li></ul>|6|[Solitaire](http://www.spoj.com/problems/SOLIT/)|SPOJ|||2|\n|<ul><li>- [ ] Done</li></ul>|7|[Drazil and His Happy Friends](http://codeforces.com/problemset/problem/515/B)|Codeforces||Codeforces Round #292 (Div. 1) & Codeforces Round #292 (Div. 2) & Codeforces Round #292 (Div. 1) & Codeforces Round #292 (Div. 2)|2|\n|<ul><li>- [ ] Done</li></ul>|8|[Robbing Gringotts](https://icpcarchive.ecs.baylor.edu/index.php?option=onlinejudge&page=show_problem&problem=3996)|Live Archive|2011|Asia - Amritapuri|2|\n|<ul><li>- [ ] Done</li></ul>|9|[The Morning after Halloween](https://icpcarchive.ecs.baylor.edu/index.php?option=onlinejudge&page=show_problem&problem=1889)|Live Archive|2007|Asia - Tokyo|3|\n|<ul><li>- [ ] Done</li></ul>|10|[Vanya and Scales](http://codeforces.com/problemset/problem/552/C)|Codeforces||Codeforces Round #308 (Div. 2)|3|\n|<ul><li>- [ ] Done</li></ul>|11|[Face the mate](http://www.spoj.com/problems/FACENEMY/)|SPOJ|||4|\n|<ul><li>- [ ] Done</li></ul>|12|[Parity](http://www.spoj.com/problems/PARITY/)|SPOJ|||5|\n|<ul><li>- [ ] Done</li></ul>|13|[Inversions problem](http://codeforces.com/problemset/problem/513/G1)|Codeforces||Rockethon 2015|5|\n|<ul><li>- [ ] Done</li></ul>|14|[Maximum Subsequence](http://codeforces.com/problemset/problem/888/E)|Codeforces||Educational Codeforces Round 32|5|\n|<ul><li>- [ ] Done</li></ul>|15|[Chocolate](http://codeforces.com/problemset/problem/490/D)|Codeforces||Codeforces Round #279 (Div. 2)|5|\n|<ul><li>- [ ] Done</li></ul>|16|[Golden System](http://codeforces.com/problemset/problem/457/A)|Codeforces||MemSQL Start[c]UP 2.0 - Round 2|6|\n|<ul><li>- [ ] Done</li></ul>|17|[Anya and Cubes](http://codeforces.com/problemset/problem/525/E)|Codeforces||Codeforces Round #297 (Div. 2)|6|\n|<ul><li>- [ ] Done</li></ul>|18|[Permutation Sum](http://codeforces.com/problemset/problem/285/D)|Codeforces||Codeforces Round #175 (Div. 2)|6|\n|<ul><li>- [ ] Done</li></ul>|19|[Maximal Independent Set](http://www.spoj.com/problems/MAXISET/)|SPOJ|||6|\n|<ul><li>- [ ] Done</li></ul>|20|[Event Dates](http://codeforces.com/problemset/problem/45/D)|Codeforces||School Team Contest #3 (Winter Computer School 2010/11)|7|\n|<ul><li>- [ ] Done</li></ul>|21|[Lizard Era: Beginning](http://codeforces.com/problemset/problem/585/D)|Codeforces||Codeforces Round #325 (Div. 1) & Codeforces Round #325 (Div. 2)|7|\n|<ul><li>- [ ] Done</li></ul>|22|[Axis Walking](http://codeforces.com/problemset/problem/327/E)|Codeforces||Codeforces Round #191 (Div. 2)|7|\n|<ul><li>- [ ] Done</li></ul>|23|[EllysBulls](http://community.topcoder.com/stat?c=problem_statement&pm=12420)|TopCoder||SRM 572 - Div1 medium] (15492)|7|\n|<ul><li>- [ ] Done</li></ul>|24|[Mother of Dragons](http://codeforces.com/problemset/problem/839/E)|Codeforces||Codeforces Round #428 (Div. 2)|8|\n|<ul><li>- [ ] Done</li></ul>|25|[The Morning after Halloween](http://acm.tju.edu.cn/toj/showp3081.html)|TJU|||8|\n|<ul><li>- [ ] Done</li></ul>|26|[Simplified Nonogram](http://codeforces.com/problemset/problem/534/F)|Codeforces||Codeforces Round #298 (Div. 2)|9|\n|<ul><li>- [ ] Done</li></ul>|27|[Missing Piece 2001](http://acm.tju.edu.cn/toj/showp2049.html)|TJU|||9|\n|<ul><li>- [ ] Done</li></ul>|28|[Permanent](http://codeforces.com/problemset/problem/468/E)|Codeforces||Codeforces Round #268 (Div. 1)|10|\n|<ul><li>- [ ] Done</li></ul>|29|[Wavy numbers](http://codeforces.com/problemset/problem/478/E)|Codeforces||Codeforces Round #273 (Div. 2)|10|\n"
  },
  {
    "path": "categories/048. Suffix_Array_Tree/README.md",
    "content": "# 048. Suffix_Array_Tree\n\n\n| Checkbox | ID | Problem Name|Online Judge|Year|Contest|Difficulty Level|\n|:---:|:---:|:---:|:---:|:---:|:---:|:---:|\n|<ul><li>- [ ] Done</li></ul>|1|[I Love Strings!!](https://uva.onlinejudge.org/index.php?option=onlinejudge&page=show_problem&problem=1620)|UVA|||1|\n|<ul><li>- [ ] Done</li></ul>|2|[Stammering Aliens](https://icpcarchive.ecs.baylor.edu/index.php?option=onlinejudge&page=show_problem&problem=2514)|Live Archive|2009|Europe - Southwestern|1|\n|<ul><li>- [ ] Done</li></ul>|3|[Longest Common Substring](http://www.spoj.com/problems/LCS/)|SPOJ|||1|\n|<ul><li>- [ ] Done</li></ul>|4|[Suffix Array](http://www.spoj.com/problems/SARRAY/)|SPOJ|||1|\n|<ul><li>- [ ] Done</li></ul>|5|[New Distinct Substrings](http://www.spoj.com/problems/SUBST1/)|SPOJ|||1|\n|<ul><li>- [ ] Done</li></ul>|6|[Distinct Substrings](http://www.spoj.com/problems/DISUBSTR/)|SPOJ|||1|\n|<ul><li>- [ ] Done</li></ul>|7|[Glass Beads](http://www.spoj.com/problems/BEADS/)|SPOJ|||1|\n|<ul><li>- [ ] Done</li></ul>|8|[Lexicographical Substring Search](http://www.spoj.com/problems/SUBLEX/)|SPOJ|||1|\n|<ul><li>- [ ] Done</li></ul>|9|[Hidden Password](https://icpcarchive.ecs.baylor.edu/index.php?option=onlinejudge&page=show_problem&problem=756)|Live Archive|2003|Europe - Southeastern|1|\n|<ul><li>- [ ] Done</li></ul>|10|[Longest Contiguous Subsequence](http://acm.tju.edu.cn/toj/showp3601.html)|TJU|||2|\n|<ul><li>- [ ] Done</li></ul>|11|[GATTACA](https://uva.onlinejudge.org/index.php?option=onlinejudge&page=show_problem&problem=2507)|UVA|||2|\n|<ul><li>- [ ] Done</li></ul>|12|[Longest Common Substring II ](http://www.spoj.com/problems/LCS2/)|SPOJ|||2|\n|<ul><li>- [ ] Done</li></ul>|13|[Glass Beads](https://uva.onlinejudge.org/index.php?option=onlinejudge&page=show_problem&problem=660)|UVA|||2|\n|<ul><li>- [ ] Done</li></ul>|14|[Minimum Rotations](http://www.spoj.com/problems/MINMOVE/)|SPOJ|||2|\n|<ul><li>- [ ] Done</li></ul>|15|[Frequent Substrings](https://uva.onlinejudge.org/index.php?option=onlinejudge&page=show_problem&problem=1175)|UVA|||4|\n|<ul><li>- [ ] Done</li></ul>|16|[Hidden Password](https://uva.onlinejudge.org/index.php?option=onlinejudge&page=show_problem&problem=4060)|UVA|||5|\n|<ul><li>- [ ] Done</li></ul>|17|[Stammering Aliens](https://uva.onlinejudge.org/index.php?option=onlinejudge&page=show_problem&problem=3358)|UVA|||5|\n|<ul><li>- [ ] Done</li></ul>|18|[Petr#](http://codeforces.com/problemset/problem/113/B)|Codeforces||Codeforces Beta Round #86 (Div. 1 Only) & Codeforces Beta Round #86 (Div. 2 Only)|5|\n|<ul><li>- [ ] Done</li></ul>|19|[Petya the Hero](http://acm.sgu.ru/problem.php?contest=0&problem=411)|SGU|||5|\n|<ul><li>- [ ] Done</li></ul>|20|[Martian Strings](http://codeforces.com/problemset/problem/149/E)|Codeforces||Codeforces Round #106 (Div. 2)|6|\n|<ul><li>- [ ] Done</li></ul>|21|[String](http://codeforces.com/problemset/problem/128/B)|Codeforces||Codeforces Beta Round #94 (Div. 1 Only) & Codeforces Beta Round #94 (Div. 2 Only)|6|\n|<ul><li>- [ ] Done</li></ul>|22|[Cyclical Quest](http://codeforces.com/problemset/problem/235/C)|Codeforces||Codeforces Round #146 (Div. 1) & Codeforces Round #146 (Div. 2)|7|\n|<ul><li>- [ ] Done</li></ul>|23|[String](http://codeforces.com/problemset/problem/123/D)|Codeforces||Codeforces Beta Round #92 (Div. 1 Only)|8|\n|<ul><li>- [ ] Done</li></ul>|24|[Genetic engineering](http://codeforces.com/problemset/problem/86/C)|Codeforces||Yandex.Algorithm 2011 Round 2|8|\n|<ul><li>- [ ] Done</li></ul>|25|[Deletion of Repeats](http://codeforces.com/problemset/problem/19/C)|Codeforces||Codeforces Beta Round #19|8|\n|<ul><li>- [ ] Done</li></ul>|26|[Little Elephant and Strings](http://codeforces.com/problemset/problem/204/E)|Codeforces||Codeforces Round #129 (Div. 1)|8|\n|<ul><li>- [ ] Done</li></ul>|27|[Fence](http://codeforces.com/problemset/problem/232/D)|Codeforces||Codeforces Round #144 (Div. 1)|9|\n"
  },
  {
    "path": "categories/049. 0_1_Knapsack/README.md",
    "content": "# 049. 0_1_Knapsack\n\n\n| Checkbox | ID | Problem Name|Online Judge|Contest|Difficulty Level|\n|:---:|:---:|:---:|:---:|:---:|:---:|\n|<ul><li>- [ ] Done</li></ul>|1|[CD](https://uva.onlinejudge.org/index.php?option=onlinejudge&page=show_problem&problem=565)|UVA||1|\n|<ul><li>- [ ] Done</li></ul>|2|[Party Schedule](http://www.spoj.com/problems/PARTY/)|SPOJ||1|\n|<ul><li>- [ ] Done</li></ul>|3|[Scuba diver](http://www.spoj.com/problems/SCUBADIV/)|SPOJ||1|\n|<ul><li>- [ ] Done</li></ul>|4|[Piggy-Bank](http://www.spoj.com/problems/PIGBANK/)|SPOJ||1|\n|<ul><li>- [ ] Done</li></ul>|5|[The Knapsack Problem](http://www.spoj.com/problems/KNAPSACK/)|SPOJ||1|\n|<ul><li>- [ ] Done</li></ul>|6|[Dividing coins](https://uva.onlinejudge.org/index.php?option=onlinejudge&page=show_problem&problem=503)|UVA||1|\n|<ul><li>- [ ] Done</li></ul>|7|[Divisible Group Sums](https://uva.onlinejudge.org/index.php?option=onlinejudge&page=show_problem&problem=1557)|UVA||1|\n|<ul><li>- [ ] Done</li></ul>|8|[Wachovia Bank](http://www.spoj.com/problems/WACHOVIA/)|SPOJ||1|\n|<ul><li>- [ ] Done</li></ul>|9|[SuperSale](https://uva.onlinejudge.org/index.php?option=onlinejudge&page=show_problem&problem=1071)|UVA||1|\n|<ul><li>- [ ] Done</li></ul>|10|[Luggage](https://uva.onlinejudge.org/index.php?option=onlinejudge&page=show_problem&problem=1605)|UVA||1|\n|<ul><li>- [ ] Done</li></ul>|11|[Blueberries](http://www.spoj.com/problems/RPLB/)|SPOJ||1|\n|<ul><li>- [ ] Done</li></ul>|12|[Large Knapsack](http://www.spoj.com/problems/LKS/)|SPOJ||1|\n|<ul><li>- [ ] Done</li></ul>|13|[Sum of Different Primes](https://uva.onlinejudge.org/index.php?option=onlinejudge&page=show_problem&problem=3654)|UVA||2|\n|<ul><li>- [ ] Done</li></ul>|14|[Cow Frisbee Team](http://acm.tju.edu.cn/toj/showp3208.html)|TJU||2|\n|<ul><li>- [ ] Done</li></ul>|15|[Blackout](http://www.spoj.com/problems/BLACKOUT/)|SPOJ||2|\n|<ul><li>- [ ] Done</li></ul>|16|[Ferry Loading](https://uva.onlinejudge.org/index.php?option=onlinejudge&page=show_problem&problem=1202)|UVA||2|\n|<ul><li>- [ ] Done</li></ul>|17|[Trouble of 13-Dots](https://uva.onlinejudge.org/index.php?option=onlinejudge&page=show_problem&problem=1760)|UVA||2|\n|<ul><li>- [ ] Done</li></ul>|18|[Diving for Gold](https://uva.onlinejudge.org/index.php?option=onlinejudge&page=show_problem&problem=931)|UVA||2|\n|<ul><li>- [ ] Done</li></ul>|19|[Boxes](https://uva.onlinejudge.org/index.php?option=onlinejudge&page=show_problem&problem=1944)|UVA||2|\n|<ul><li>- [ ] Done</li></ul>|20|[Eat or Study](http://acm.tju.edu.cn/toj/showp3991.html)|TJU||3|\n|<ul><li>- [ ] Done</li></ul>|21|[Arpa's weak amphitheater and Mehrdad's valuable Hoses](http://codeforces.com/problemset/problem/741/B)|Codeforces|Codeforces Round #383 (Div. 1) & Codeforces Round #383 (Div. 2)|3|\n|<ul><li>- [ ] Done</li></ul>|22|[Best Coalitions](https://uva.onlinejudge.org/index.php?option=onlinejudge&page=show_problem&problem=2705)|UVA||3|\n|<ul><li>- [ ] Done</li></ul>|23|[Term Strategy](https://uva.onlinejudge.org/index.php?option=onlinejudge&page=show_problem&problem=2316)|UVA||3|\n|<ul><li>- [ ] Done</li></ul>|24|[Let's Yum Cha!](https://uva.onlinejudge.org/index.php?option=onlinejudge&page=show_problem&problem=2613)|UVA||3|\n|<ul><li>- [ ] Done</li></ul>|25|[Bag Problem](http://acm.tju.edu.cn/toj/showp3539.html)|TJU||4|\n|<ul><li>- [ ] Done</li></ul>|26|[First Blood](http://acm.tju.edu.cn/toj/showp4091.html)|TJU||4|\n|<ul><li>- [ ] Done</li></ul>|27|[Account Book](https://uva.onlinejudge.org/index.php?option=onlinejudge&page=show_problem&problem=2932)|UVA||4|\n"
  },
  {
    "path": "categories/050. Balanced_Binary_Search_Trees/README.md",
    "content": "# 050. Balanced_Binary_Search_Trees\n\n\n| Checkbox | ID | Problem Name|Online Judge|Contest|Difficulty Level|\n|:---:|:---:|:---:|:---:|:---:|:---:|\n|<ul><li>- [ ] Done</li></ul>|1|[Order statistic set](http://www.spoj.com/problems/ORDERSET/)|SPOJ||1|\n|<ul><li>- [ ] Done</li></ul>|2|[Cube Stacking](http://poj.org/problem?id=1988)|PKU||1|\n|<ul><li>- [ ] Done</li></ul>|3|[Matrix](http://www.spoj.com/problems/KPMATRIX/)|SPOJ||2|\n|<ul><li>- [ ] Done</li></ul>|4|[Can you answer these queries VI](http://www.spoj.com/problems/GSS6/)|SPOJ||2|\n|<ul><li>- [ ] Done</li></ul>|5|[Giá tr&#7883; l&#7899;n nh&#7845;t 3](http://www.spoj.com/problems/QMAX3VN/)|SPOJ||2|\n|<ul><li>- [ ] Done</li></ul>|6|[Weird Function](http://www.spoj.com/problems/WEIRDFN/)|SPOJ||2|\n|<ul><li>- [ ] Done</li></ul>|7|[Almost Union-Find](https://uva.onlinejudge.org/index.php?option=onlinejudge&page=show_problem&problem=3138)|UVA||3|\n|<ul><li>- [ ] Done</li></ul>|8|[Lucy and Palindromes](http://www.codechef.com/problems/PALINDR)|CodeChef||3|\n|<ul><li>- [ ] Done</li></ul>|9|[Robotic Sort](http://www.spoj.com/problems/CERC07S/)|SPOJ||3|\n|<ul><li>- [ ] Done</li></ul>|10|[Chef and medium problem](http://www.codechef.com/problems/CHEFC)|CodeChef||3|\n|<ul><li>- [ ] Done</li></ul>|11|[Another Sequence Problem](http://www.spoj.com/problems/SEQ2/)|SPOJ||3|\n|<ul><li>- [ ] Done</li></ul>|12|[Twist and whirl -- want to cheat](http://acm.sgu.ru/problem.php?contest=0&problem=187)|SGU||3|\n|<ul><li>- [ ] Done</li></ul>|13|[Card Shuffle](http://www.codechef.com/problems/CARDSHUF)|CodeChef||3|\n|<ul><li>- [ ] Done</li></ul>|14|[Temple Queues](http://www.spoj.com/problems/TEMPLEQ/)|SPOJ||3|\n|<ul><li>- [ ] Done</li></ul>|15|[Yet another range difference query!](http://www.spoj.com/problems/TREAP/)|SPOJ||4|\n|<ul><li>- [ ] Done</li></ul>|16|[``Dynamic'' Inversion](https://uva.onlinejudge.org/index.php?option=onlinejudge&page=show_problem&problem=3141)|UVA||5|\n|<ul><li>- [ ] Done</li></ul>|17|[Genetics](http://www.codechef.com/problems/GENETICS)|CodeChef||5|\n|<ul><li>- [ ] Done</li></ul>|18|[Graph and Queries](https://uva.onlinejudge.org/index.php?option=onlinejudge&page=show_problem&problem=4225)|UVA||5|\n|<ul><li>- [ ] Done</li></ul>|19|[Version Controlled IDE](https://uva.onlinejudge.org/index.php?option=onlinejudge&page=show_problem&problem=3983)|UVA||5|\n|<ul><li>- [ ] Done</li></ul>|20|[Yet Another Array Queries Problem](http://codeforces.com/problemset/problem/863/D)|Codeforces|Educational Codeforces Round 29|5|\n|<ul><li>- [ ] Done</li></ul>|21|[Robotic Sort](https://uva.onlinejudge.org/index.php?option=onlinejudge&page=show_problem&problem=4148)|UVA||6|\n|<ul><li>- [ ] Done</li></ul>|22|[Restructuring Company](http://codeforces.com/problemset/problem/566/D)|Codeforces|VK Cup 2015 - Finals, online mirror|6|\n|<ul><li>- [ ] Done</li></ul>|23|[Count The Indexes 2](http://www.spoj.com/problems/CNTINDX2/)|SPOJ||7|\n|<ul><li>- [ ] Done</li></ul>|24|[Arnook Defensive Line](http://www.spoj.com/problems/KL11B/)|SPOJ||7|\n|<ul><li>- [ ] Done</li></ul>|25|[Asistent](http://www.spoj.com/problems/ASISTENT/)|SPOJ||8|\n|<ul><li>- [ ] Done</li></ul>|26|[Hitchhiking in the Baltic States](http://codeforces.com/problemset/problem/809/D)|Codeforces|Codeforces Round #415 (Div. 1)|9|\n"
  },
  {
    "path": "categories/051. MO_s_Algorithm_Query_square_root_decomposition/README.md",
    "content": "# 051. MO_s_Algorithm_Query_square_root_decomposition\n\n\n| Checkbox | ID | Problem Name|Online Judge|Contest|Difficulty Level|\n|:---:|:---:|:---:|:---:|:---:|:---:|\n|<ul><li>- [ ] Done</li></ul>|1|[D-query](http://www.spoj.com/problems/DQUERY/)|SPOJ||1|\n|<ul><li>- [ ] Done</li></ul>|2|[Mr. Kitayuta's Colorful Graph](http://codeforces.com/problemset/problem/506/D)|Codeforces|Codeforces Round #286 (Div. 1) & Codeforces Round #286 (Div. 2) & Codeforces Round #286 (Div. 1) & Codeforces Round #286 (Div. 2)|2|\n|<ul><li>- [ ] Done</li></ul>|3|[GCD 2010](http://acm.timus.ru/problem.aspx?space=1&num=1846)|Timus||3|\n|<ul><li>- [ ] Done</li></ul>|4|[Zero Query](http://www.spoj.com/problems/ZQUERY/)|SPOJ||3|\n|<ul><li>- [ ] Done</li></ul>|5|[Little Elephant and Array](http://codeforces.com/problemset/problem/220/B)|Codeforces|Codeforces Round #136 (Div. 1) & Codeforces Round #136 (Div. 2)|3|\n|<ul><li>- [ ] Done</li></ul>|6|[Powerful array](http://codeforces.com/problemset/problem/86/D)|Codeforces|Yandex.Algorithm 2011 Round 2|3|\n|<ul><li>- [ ] Done</li></ul>|7|[Gao on a tree](http://www.spoj.com/problems/GOT/)|SPOJ||3|\n|<ul><li>- [ ] Done</li></ul>|8|[XOR and Favorite Number](http://codeforces.com/problemset/problem/617/E)|Codeforces|Codeforces Round #340 (Div. 2)|4|\n|<ul><li>- [ ] Done</li></ul>|9|[Xenia and Tree](http://codeforces.com/problemset/problem/342/E)|Codeforces|Codeforces Round #199 (Div. 2)|4|\n|<ul><li>- [ ] Done</li></ul>|10|[Little Artem and Time Machine](http://codeforces.com/problemset/problem/641/E)|Codeforces|VK Cup 2016 - Round 2|5|\n|<ul><li>- [ ] Done</li></ul>|11|[Tree and Queries](http://codeforces.com/problemset/problem/375/D)|Codeforces|Codeforces Round #221 (Div. 1)|5|\n|<ul><li>- [ ] Done</li></ul>|12|[DZY Loves Colors](http://codeforces.com/problemset/problem/444/C)|Codeforces|Codeforces Round #254 (Div. 1) & Codeforces Round #254 (Div. 2)|6|\n|<ul><li>- [ ] Done</li></ul>|13|[Holidays](http://codeforces.com/problemset/problem/44/C)|Codeforces|School Team Contest #2 (Winter Computer School 2010/11)|6|\n|<ul><li>- [ ] Done</li></ul>|14|[Ada and Numbering](http://www.spoj.com/problems/ADANUM/)|SPOJ||6|\n|<ul><li>- [ ] Done</li></ul>|15|[Holes](http://codeforces.com/problemset/problem/13/E)|Codeforces|Codeforces Beta Round #13|6|\n|<ul><li>- [ ] Done</li></ul>|16|[Serega and Fun](http://codeforces.com/problemset/problem/455/D)|Codeforces|Codeforces Round #260 (Div. 1)|6|\n|<ul><li>- [ ] Done</li></ul>|17|[Counting diff-pairs](http://www.spoj.com/problems/CPAIR2/)|SPOJ||6|\n|<ul><li>- [ ] Done</li></ul>|18|[DZY Loves Fibonacci Numbers](http://codeforces.com/problemset/problem/446/C)|Codeforces|Codeforces Round #255 (Div. 1) & Codeforces Round #255 (Div. 2)|6|\n|<ul><li>- [ ] Done</li></ul>|19|[Subset Sums](http://codeforces.com/problemset/problem/348/C)|Codeforces|Codeforces Round #202 (Div. 1) & Codeforces Round #202 (Div. 2)|7|\n|<ul><li>- [ ] Done</li></ul>|20|[Conveyor Belts](http://codeforces.com/problemset/problem/487/D)|Codeforces|Codeforces Round #278 (Div. 1)|8|\n|<ul><li>- [ ] Done</li></ul>|21|[Ann and Books](http://codeforces.com/problemset/problem/877/F)|Codeforces|Codeforces Round #442 (Div. 2)|8|\n|<ul><li>- [ ] Done</li></ul>|22|[Instant Messanger](http://codeforces.com/problemset/problem/398/D)|Codeforces|Codeforces Round #233 (Div. 1)|8|\n|<ul><li>- [ ] Done</li></ul>|23|[Jeff and Removing Periods](http://codeforces.com/problemset/problem/351/D)|Codeforces|Codeforces Round #204 (Div. 1)|8|\n|<ul><li>- [ ] Done</li></ul>|24|[Destiny](http://codeforces.com/problemset/problem/840/D)|Codeforces|Codeforces Round #429 (Div. 1)|8|\n"
  },
  {
    "path": "categories/052. FFT/README.md",
    "content": "# 052. FFT\n\n\n| Checkbox | ID | Problem Name|Online Judge|Contest|Difficulty Level|\n|:---:|:---:|:---:|:---:|:---:|:---:|\n|<ul><li>- [ ] Done</li></ul>|1|[Fast Multiplication](http://www.spoj.com/problems/MUL/)|SPOJ||1|\n|<ul><li>- [ ] Done</li></ul>|2|[Polynomial Multiplication](http://www.spoj.com/problems/POLYMUL/)|SPOJ||2|\n|<ul><li>- [ ] Done</li></ul>|3|[Very Fast Multiplication](http://www.spoj.com/problems/VFMUL/)|SPOJ||2|\n|<ul><li>- [ ] Done</li></ul>|4|[Furik and Rubik and Sub Array](http://www.codechef.com/problems/FARASA)|CodeChef||3|\n|<ul><li>- [ ] Done</li></ul>|5|[Maximum Self-Matching](http://www.spoj.com/problems/MAXMATCH/)|SPOJ||3|\n|<ul><li>- [ ] Done</li></ul>|6|[Arithmetic Progressions](http://www.codechef.com/problems/COUNTARI)|CodeChef||3|\n|<ul><li>- [ ] Done</li></ul>|7|[Golf Bot](https://uva.onlinejudge.org/index.php?option=onlinejudge&page=show_problem&problem=4744)|UVA||5|\n|<ul><li>- [ ] Done</li></ul>|8|[Buying Land](http://www.codechef.com/problems/BUYLAND)|CodeChef||6|\n|<ul><li>- [ ] Done</li></ul>|9|[Fuzzy Search](http://codeforces.com/problemset/problem/528/D)|Codeforces|Codeforces Round #296 (Div. 1)|7|\n|<ul><li>- [ ] Done</li></ul>|10|[Binary Table](http://codeforces.com/problemset/problem/662/C)|Codeforces|CROC 2016 - Final Round [Private, For Onsite Finalists Only]|7|\n|<ul><li>- [ ] Done</li></ul>|11|[DZY Loves FFT](http://codeforces.com/problemset/problem/444/B)|Codeforces|Codeforces Round #254 (Div. 1) & Codeforces Round #254 (Div. 2)|7|\n|<ul><li>- [ ] Done</li></ul>|12|[Thief in a Shop](http://codeforces.com/problemset/problem/632/E)|Codeforces|Educational Codeforces Round 9|7|\n|<ul><li>- [ ] Done</li></ul>|13|[The Child and Binary Tree](http://codeforces.com/problemset/problem/438/E)|Codeforces|Codeforces Round #250 (Div. 1)|8|\n|<ul><li>- [ ] Done</li></ul>|14|[Painting Square](http://codeforces.com/problemset/problem/300/D)|Codeforces|Codeforces Round #181 (Div. 2)|8|\n|<ul><li>- [ ] Done</li></ul>|15|[Ladies' Shop](http://codeforces.com/problemset/problem/286/E)|Codeforces|Codeforces Round #176 (Div. 1)|8|\n|<ul><li>- [ ] Done</li></ul>|16|[Design New Capital](https://uva.onlinejudge.org/index.php?option=onlinejudge&page=show_problem&problem=4929)|UVA||8|\n|<ul><li>- [ ] Done</li></ul>|17|[Dasha and cyclic table](http://codeforces.com/problemset/problem/754/E)|Codeforces|Codeforces Round #390 (Div. 2)|9|\n|<ul><li>- [ ] Done</li></ul>|18|[Tile Cutting](https://uva.onlinejudge.org/index.php?option=onlinejudge&page=show_problem&problem=4791)|UVA||9|\n|<ul><li>- [ ] Done</li></ul>|19|[Design Tutorial: Increase the Constraints](http://codeforces.com/problemset/problem/472/G)|Codeforces|Codeforces Round #270|9|\n|<ul><li>- [ ] Done</li></ul>|20|[Transforming Sequence](http://codeforces.com/problemset/problem/623/E)|Codeforces|AIM Tech Round (Div. 1)|9|\n|<ul><li>- [ ] Done</li></ul>|21|[Nephren Runs a Cinema](http://codeforces.com/problemset/problem/896/D)|Codeforces|Codeforces Round #449 (Div. 1)|10|\n|<ul><li>- [ ] Done</li></ul>|22|[Kyoya and Train](http://codeforces.com/problemset/problem/553/E)|Codeforces|Codeforces Round #309 (Div. 1)|10|\n|<ul><li>- [ ] Done</li></ul>|23|[Days of Floral Colours](http://codeforces.com/problemset/problem/848/E)|Codeforces|Codeforces Round #431 (Div. 1)|10|\n"
  },
  {
    "path": "categories/053. Convex_hull/README.md",
    "content": "# 053. Convex_hull\n\n\n| Checkbox | ID | Problem Name|Online Judge|Year|Contest|Difficulty Level|\n|:---:|:---:|:---:|:---:|:---:|:---:|:---:|\n|<ul><li>- [ ] Done</li></ul>|1|[Build the Fence](http://www.spoj.com/problems/BSHEEP/)|SPOJ|||1|\n|<ul><li>- [ ] Done</li></ul>|2|[Onion Layers](https://icpcarchive.ecs.baylor.edu/index.php?option=onlinejudge&page=show_problem&problem=1656)|Live Archive|2006|Latin America - South America|1|\n|<ul><li>- [ ] Done</li></ul>|3|[Convex Hull of Lattice Points](https://icpcarchive.ecs.baylor.edu/index.php?option=onlinejudge&page=show_problem&problem=2559)|Live Archive|2009|North America - Greater NY|1|\n|<ul><li>- [ ] Done</li></ul>|4|[SCUD Busters](https://uva.onlinejudge.org/index.php?option=onlinejudge&page=show_problem&problem=45)|UVA|||2|\n|<ul><li>- [ ] Done</li></ul>|5|[Land Acquisition](http://www.spoj.com/problems/ACQUIRE/)|SPOJ|||2|\n|<ul><li>- [ ] Done</li></ul>|6|[Useless Tile Packers](https://uva.onlinejudge.org/index.php?option=onlinejudge&page=show_problem&problem=1006)|UVA|||2|\n|<ul><li>- [ ] Done</li></ul>|7|[Moth Eradication](https://uva.onlinejudge.org/index.php?option=onlinejudge&page=show_problem&problem=154)|UVA|||2|\n|<ul><li>- [ ] Done</li></ul>|8|[Convex Hull Finding](https://uva.onlinejudge.org/index.php?option=onlinejudge&page=show_problem&problem=622)|UVA|||2|\n|<ul><li>- [ ] Done</li></ul>|9|[The Fortified Forest](https://uva.onlinejudge.org/index.php?option=onlinejudge&page=show_problem&problem=752)|UVA|||3|\n|<ul><li>- [ ] Done</li></ul>|10|[Doors and Penguins](http://www.spoj.com/problems/DOORSPEN/)|SPOJ|||3|\n|<ul><li>- [ ] Done</li></ul>|11|[Commando](http://www.spoj.com/problems/APIO10A/)|SPOJ|||3|\n|<ul><li>- [ ] Done</li></ul>|12|[Convex Hull](https://uva.onlinejudge.org/index.php?option=onlinejudge&page=show_problem&problem=2673)|UVA|||3|\n|<ul><li>- [ ] Done</li></ul>|13|[Military Story](http://www.spoj.com/problems/VMILI/)|SPOJ|||3|\n|<ul><li>- [ ] Done</li></ul>|14|[Cops and Robbers](https://uva.onlinejudge.org/index.php?option=onlinejudge&page=show_problem&problem=297)|UVA|||4|\n|<ul><li>- [ ] Done</li></ul>|15|[Good Inflation](http://www.spoj.com/problems/GOODG/)|SPOJ|||4|\n|<ul><li>- [ ] Done</li></ul>|16|[Separate Points](http://www.spoj.com/problems/SPOINTS/)|SPOJ|||4|\n|<ul><li>- [ ] Done</li></ul>|17|[Boundary Points](https://uva.onlinejudge.org/index.php?option=onlinejudge&page=show_problem&problem=3647)|UVA|||5|\n|<ul><li>- [ ] Done</li></ul>|18|[Perfume](http://www.spoj.com/problems/PERFUME/)|SPOJ|||5|\n|<ul><li>- [ ] Done</li></ul>|19|[Two Ball Game](http://www.spoj.com/problems/TBGAME/)|SPOJ|||5|\n|<ul><li>- [ ] Done</li></ul>|20|[Buy Low Sell High](http://codeforces.com/problemset/problem/865/D)|Codeforces||MemSQL Start[c]UP 3.0 - Round 2 (onsite finalists)|6|\n|<ul><li>- [ ] Done</li></ul>|21|[Counting Divisors](http://www.spoj.com/problems/DIVCNT1/)|SPOJ|||9|\n|<ul><li>- [ ] Done</li></ul>|22|[Amazing Factor Sequence (hard)](http://www.spoj.com/problems/AFS3/)|SPOJ|||10|\n"
  },
  {
    "path": "categories/054. TopologicalSort/README.md",
    "content": "# 054. TopologicalSort\n\n\n| Checkbox | ID | Problem Name|Online Judge|Year|Contest|Difficulty Level|\n|:---:|:---:|:---:|:---:|:---:|:---:|:---:|\n|<ul><li>- [ ] Done</li></ul>|1|[Topological Sorting](http://www.spoj.com/problems/TOPOSORT/)|SPOJ|||1|\n|<ul><li>- [ ] Done</li></ul>|2|[Project File Dependencies](http://www.spoj.com/problems/PFDEP/)|SPOJ|||1|\n|<ul><li>- [ ] Done</li></ul>|3|[Following Orders](https://uva.onlinejudge.org/index.php?option=onlinejudge&page=show_problem&problem=60)|UVA|||1|\n|<ul><li>- [ ] Done</li></ul>|4|[The Dueling Philosophers Problem](https://icpcarchive.ecs.baylor.edu/index.php?option=onlinejudge&page=show_problem&problem=4206)|Live Archive|2012|North America - Mid-Atlantic USA|1|\n|<ul><li>- [ ] Done</li></ul>|5|[Rare Order](https://uva.onlinejudge.org/index.php?option=onlinejudge&page=show_problem&problem=136)|UVA|||1|\n|<ul><li>- [ ] Done</li></ul>|6|[Ordering Tasks](https://uva.onlinejudge.org/index.php?option=onlinejudge&page=show_problem&problem=1246)|UVA|||1|\n|<ul><li>- [ ] Done</li></ul>|7|[Beverages](https://uva.onlinejudge.org/index.php?option=onlinejudge&page=show_problem&problem=2001)|UVA|||1|\n|<ul><li>- [ ] Done</li></ul>|8|[Answer the boss!](http://www.spoj.com/problems/RPLA/)|SPOJ|||2|\n|<ul><li>- [ ] Done</li></ul>|9|[Topological Sorting](http://acm.timus.ru/problem.aspx?space=1&num=1280)|Timus|||2|\n|<ul><li>- [ ] Done</li></ul>|10|[All Discs Considered](http://www.spoj.com/problems/ALL/)|SPOJ|||2|\n|<ul><li>- [ ] Done</li></ul>|11|[Hierarchy](http://www.spoj.com/problems/MAKETREE/)|SPOJ|||2|\n|<ul><li>- [ ] Done</li></ul>|12|[Indiana Jones and the lost Soccer Cup](http://www.spoj.com/problems/GCPC11C/)|SPOJ|||2|\n|<ul><li>- [ ] Done</li></ul>|13|[Fox And Names](http://codeforces.com/problemset/problem/510/C)|Codeforces||Codeforces Round #290 (Div. 2) & Codeforces Round #290 (Div. 1)|2|\n|<ul><li>- [ ] Done</li></ul>|14|[Ordering](https://uva.onlinejudge.org/index.php?option=onlinejudge&page=show_problem&problem=813)|UVA|||2|\n|<ul><li>- [ ] Done</li></ul>|15|[Rare Order](https://icpcarchive.ecs.baylor.edu/index.php?option=onlinejudge&page=show_problem&problem=3140)|Live Archive|1990|World Finals - Washington|2|\n|<ul><li>- [ ] Done</li></ul>|16|[Pick up sticks](https://uva.onlinejudge.org/index.php?option=onlinejudge&page=show_problem&problem=2733)|UVA|||2|\n|<ul><li>- [ ] Done</li></ul>|17|[Orkut](http://br.spoj.com/problems/ORKUT/)|SPOJ Brazil|||3|\n|<ul><li>- [ ] Done</li></ul>|18|[Multinomial Coefficients](https://uva.onlinejudge.org/index.php?option=onlinejudge&page=show_problem&problem=852)|UVA|||4|\n|<ul><li>- [ ] Done</li></ul>|19|[Tree Topology](http://www.spoj.com/problems/TTOP/)|SPOJ|||5|\n|<ul><li>- [ ] Done</li></ul>|20|[Online Courses In BSU](http://codeforces.com/problemset/problem/770/C)|Codeforces||VK Cup 2017 - Qualification 2|5|\n|<ul><li>- [ ] Done</li></ul>|21|[Escalonamento ótimo](http://br.spoj.com/problems/ESCALO11/)|SPOJ Brazil|||6|\n"
  },
  {
    "path": "categories/055. 2sat/README.md",
    "content": "# 055. 2sat\n\n\n| Checkbox | ID | Problem Name|Online Judge|Year|Contest|Difficulty Level|\n|:---:|:---:|:---:|:---:|:---:|:---:|:---:|\n|<ul><li>- [ ] Done</li></ul>|1|[A Bug&#8217;s Life](http://www.spoj.com/problems/BUGLIFE/)|SPOJ|||1|\n|<ul><li>- [ ] Done</li></ul>|2|[Piece it together](https://icpcarchive.ecs.baylor.edu/index.php?option=onlinejudge&page=show_problem&problem=3914)|Live Archive|2011|Europe - Northwestern|2|\n|<ul><li>- [ ] Done</li></ul>|3|[Idol](https://icpcarchive.ecs.baylor.edu/index.php?option=onlinejudge&page=show_problem&problem=4285)|Live Archive|2012|Europe - Northwestern|3|\n|<ul><li>- [ ] Done</li></ul>|4|[Manhattan](https://uva.onlinejudge.org/index.php?option=onlinejudge&page=show_problem&problem=1260)|UVA|||3|\n|<ul><li>- [ ] Done</li></ul>|5|[Wedding](https://uva.onlinejudge.org/index.php?option=onlinejudge&page=show_problem&problem=2269)|UVA|||4|\n|<ul><li>- [ ] Done</li></ul>|6|[Two Sets](http://codeforces.com/problemset/problem/468/B)|Codeforces||Codeforces Round #268 (Div. 1) & Codeforces Round #268 (Div. 2)|4|\n|<ul><li>- [ ] Done</li></ul>|7|[TORNJEVI](http://www.spoj.com/problems/TORNJEVI/)|SPOJ|||4|\n|<ul><li>- [ ] Done</li></ul>|8|[The Door Problem](http://codeforces.com/problemset/problem/776/D)|Codeforces||ICM Technex 2017 and Codeforces Round #400 (Div. 1 + Div. 2, combined)|4|\n|<ul><li>- [ ] Done</li></ul>|9|[Cardápio da Sra Montagny](http://br.spoj.com/problems/CARDAPIO/)|SPOJ Brazil|||5|\n|<ul><li>- [ ] Done</li></ul>|10|[Cutting Figure](http://codeforces.com/problemset/problem/193/A)|Codeforces||Codeforces Round #122 (Div. 1) & Codeforces Round #122 (Div. 2)|5|\n|<ul><li>- [ ] Done</li></ul>|11|[The Ministers' Major Mess](https://uva.onlinejudge.org/index.php?option=onlinejudge&page=show_problem&problem=3527)|UVA|||6|\n|<ul><li>- [ ] Done</li></ul>|12|[The Road to Berland is Paved With Good Intentions](http://codeforces.com/problemset/problem/228/E)|Codeforces||Codeforces Round #141 (Div. 2)|6|\n|<ul><li>- [ ] Done</li></ul>|13|[Ring Road 2](http://codeforces.com/problemset/problem/27/D)|Codeforces||Codeforces Beta Round #27 (Codeforces format, Div. 2)|6|\n|<ul><li>- [ ] Done</li></ul>|14|[Football and Lie](http://acm.timus.ru/problem.aspx?space=1&num=1485)|Timus|||7|\n|<ul><li>- [ ] Done</li></ul>|15|[Rectangles](https://uva.onlinejudge.org/index.php?option=onlinejudge&page=show_problem&problem=3081)|UVA|||7|\n|<ul><li>- [ ] Done</li></ul>|16|[Game with Cards](http://acm.timus.ru/problem.aspx?space=1&num=1382)|Timus|||7|\n|<ul><li>- [ ] Done</li></ul>|17|[New Language](http://codeforces.com/problemset/problem/568/C)|Codeforces||Codeforces Round #315 (Div. 1) & Codeforces Round #315 (Div. 2)|8|\n|<ul><li>- [ ] Done</li></ul>|18|[Palindromic DNA](https://uva.onlinejudge.org/index.php?option=onlinejudge&page=show_problem&problem=3425)|UVA|||9|\n|<ul><li>- [ ] Done</li></ul>|19|[Duff in Mafia](http://codeforces.com/problemset/problem/587/D)|Codeforces||Codeforces Round #326 (Div. 1) & Codeforces Round #326 (Div. 2)|10|\n|<ul><li>- [ ] Done</li></ul>|20|[Summer Dichotomy](http://codeforces.com/problemset/problem/538/H)|Codeforces||Codeforces Round #300|10|\n|<ul><li>- [ ] Done</li></ul>|21|[Supplying the Suppliers](http://www.spoj.com/problems/SUPSUP/)|SPOJ|||10|\n"
  },
  {
    "path": "categories/056. LIS/README.md",
    "content": "# 056. LIS\n\n\n| Checkbox | ID | Problem Name|Online Judge|Contest|Difficulty Level|\n|:---:|:---:|:---:|:---:|:---:|:---:|\n|<ul><li>- [ ] Done</li></ul>|1|[What Goes Up](https://uva.onlinejudge.org/index.php?option=onlinejudge&page=show_problem&problem=422)|UVA||1|\n|<ul><li>- [ ] Done</li></ul>|2|[Strategic Defense Initiative](https://uva.onlinejudge.org/index.php?option=onlinejudge&page=show_problem&problem=438)|UVA||1|\n|<ul><li>- [ ] Done</li></ul>|3|[Building Bridges](http://www.spoj.com/problems/BRIDGE/)|SPOJ||1|\n|<ul><li>- [ ] Done</li></ul>|4|[Easy Longest Increasing Subsequence](http://www.spoj.com/problems/ELIS/)|SPOJ||1|\n|<ul><li>- [ ] Done</li></ul>|5|[Wavio Sequence](https://uva.onlinejudge.org/index.php?option=onlinejudge&page=show_problem&problem=1475)|UVA||1|\n|<ul><li>- [ ] Done</li></ul>|6|[Stacking Boxes](https://uva.onlinejudge.org/index.php?option=onlinejudge&page=show_problem&problem=39)|UVA||1|\n|<ul><li>- [ ] Done</li></ul>|7|[The Tower of Babylon](https://uva.onlinejudge.org/index.php?option=onlinejudge&page=show_problem&problem=378)|UVA||1|\n|<ul><li>- [ ] Done</li></ul>|8|[In Danger](http://www.spoj.com/problems/DANGER/)|SPOJ||1|\n|<ul><li>- [ ] Done</li></ul>|9|[History Grading](https://uva.onlinejudge.org/index.php?option=onlinejudge&page=show_problem&problem=47)|UVA||1|\n|<ul><li>- [ ] Done</li></ul>|10|[Testing the CATCHER](https://uva.onlinejudge.org/index.php?option=onlinejudge&page=show_problem&problem=167)|UVA||1|\n|<ul><li>- [ ] Done</li></ul>|11|[Trainsorting](https://uva.onlinejudge.org/index.php?option=onlinejudge&page=show_problem&problem=2451)|UVA||2|\n|<ul><li>- [ ] Done</li></ul>|12|[Another Longest Increasing Subsequence Problem](http://www.spoj.com/problems/LIS2/)|SPOJ||2|\n|<ul><li>- [ ] Done</li></ul>|13|[Tower of Cubes](https://uva.onlinejudge.org/index.php?option=onlinejudge&page=show_problem&problem=992)|UVA||2|\n|<ul><li>- [ ] Done</li></ul>|14|[Is Bigger Smarter?](http://acm.tju.edu.cn/toj/showp1216.html)|TJU||2|\n|<ul><li>- [ ] Done</li></ul>|15|[Supernumbers in a permutation](http://www.spoj.com/problems/SUPPER/)|SPOJ||2|\n|<ul><li>- [ ] Done</li></ul>|16|[BATMAN3](http://www.spoj.com/problems/BAT3/)|SPOJ||2|\n|<ul><li>- [ ] Done</li></ul>|17|[Murcia's Skyline](https://uva.onlinejudge.org/index.php?option=onlinejudge&page=show_problem&problem=2890)|UVA||2|\n|<ul><li>- [ ] Done</li></ul>|18|[Greenhouse Effect](http://codeforces.com/problemset/problem/269/B)|Codeforces|Codeforces Round #165 (Div. 1) & Codeforces Round #165 (Div. 2)|3|\n|<ul><li>- [ ] Done</li></ul>|19|[Building Bridges(HARD)](http://www.spoj.com/problems/BRDGHRD/)|SPOJ||3|\n|<ul><li>- [ ] Done</li></ul>|20|[Tiling Up Blocks](https://uva.onlinejudge.org/index.php?option=onlinejudge&page=show_problem&problem=3637)|UVA||3|\n|<ul><li>- [ ] Done</li></ul>|21|[Bubble Sort Graph](http://codeforces.com/problemset/problem/340/D)|Codeforces|Codeforces Round #198 (Div. 2) & Codeforces Round #198 (Div. 1)|3|\n"
  },
  {
    "path": "categories/057. ACM-ICPC_Dhaka_Site_Regional_Contests/README.md",
    "content": "# 057. ACM-ICPC_Dhaka_Site_Regional_Contests\n\n\n| Checkbox | ID | Problem Name|Online Judge|Contest|Difficulty Level|\n|:---:|:---:|:---:|:---:|:---:|:---:|\n|<ul><li>- [ ] Done</li></ul>|1|[Vanya and Lanterns](http://codeforces.com/problemset/problem/492/B)|Codeforces|Codeforces Round #280 (Div. 2)|1|\n|<ul><li>- [ ] Done</li></ul>|2|[The Dole Queue](https://uva.onlinejudge.org/index.php?option=onlinejudge&page=show_problem&problem=69)|UVA||1|\n|<ul><li>- [ ] Done</li></ul>|3|[Vanya and Cubes](http://codeforces.com/problemset/problem/492/A)|Codeforces|Codeforces Round #280 (Div. 2)|1|\n|<ul><li>- [ ] Done</li></ul>|4|[Vanya and Exams](http://codeforces.com/problemset/problem/492/C)|Codeforces|Codeforces Round #280 (Div. 2)|2|\n|<ul><li>- [ ] Done</li></ul>|5|[Falling Ants](https://uva.onlinejudge.org/index.php?option=onlinejudge&page=show_problem&problem=4447)|UVA||3|\n|<ul><li>- [ ] Done</li></ul>|6|[GCD XOR](https://uva.onlinejudge.org/index.php?option=onlinejudge&page=show_problem&problem=4454)|UVA||3|\n|<ul><li>- [ ] Done</li></ul>|7|[Vasya and Basketball](http://codeforces.com/problemset/problem/493/C)|Codeforces|Codeforces Round #281 (Div. 2)|3|\n|<ul><li>- [ ] Done</li></ul>|8|[Dromicpalin Substrings](https://uva.onlinejudge.org/index.php?option=onlinejudge&page=show_problem&problem=4456)|UVA||4|\n|<ul><li>- [ ] Done</li></ul>|9|[Vanya and Computer Game](http://codeforces.com/problemset/problem/492/D)|Codeforces|Codeforces Round #280 (Div. 2)|4|\n|<ul><li>- [ ] Done</li></ul>|10|[Pattern Locker](https://uva.onlinejudge.org/index.php?option=onlinejudge&page=show_problem&problem=4450)|UVA||4|\n|<ul><li>- [ ] Done</li></ul>|11|[Radar Installation](https://uva.onlinejudge.org/index.php?option=onlinejudge&page=show_problem&problem=3634)|UVA||4|\n|<ul><li>- [ ] Done</li></ul>|12|[Air Raid](https://uva.onlinejudge.org/index.php?option=onlinejudge&page=show_problem&problem=3625)|UVA||5|\n|<ul><li>- [ ] Done</li></ul>|13|[Two Points Revisited](https://uva.onlinejudge.org/index.php?option=onlinejudge&page=show_problem&problem=4452)|UVA||5|\n|<ul><li>- [ ] Done</li></ul>|14|[Watching the Kangaroo](https://uva.onlinejudge.org/index.php?option=onlinejudge&page=show_problem&problem=4453)|UVA||6|\n|<ul><li>- [ ] Done</li></ul>|15|[Vanya and Field](http://codeforces.com/problemset/problem/492/E)|Codeforces|Codeforces Round #280 (Div. 2)|6|\n|<ul><li>- [ ] Done</li></ul>|16|[Fiasco](https://uva.onlinejudge.org/index.php?option=onlinejudge&page=show_problem&problem=4455)|UVA||7|\n|<ul><li>- [ ] Done</li></ul>|17|[Game of MJ](https://uva.onlinejudge.org/index.php?option=onlinejudge&page=show_problem&problem=4448)|UVA||7|\n|<ul><li>- [ ] Done</li></ul>|18|[Game of Throne](https://uva.onlinejudge.org/index.php?option=onlinejudge&page=show_problem&problem=4449)|UVA||9|\n|<ul><li>- [ ] Done</li></ul>|19|[Fill the Cuboid](https://uva.onlinejudge.org/index.php?option=onlinejudge&page=show_problem&problem=4457)|UVA||9|\n|<ul><li>- [ ] Done</li></ul>|20|[Pearl Chains](https://uva.onlinejudge.org/index.php?option=onlinejudge&page=show_problem&problem=4451)|UVA||9|\n"
  },
  {
    "path": "categories/058. polynomial/README.md",
    "content": "# 058. polynomial\n\n\n| Checkbox | ID | Problem Name|Online Judge|Year|Contest|Difficulty Level|\n|:---:|:---:|:---:|:---:|:---:|:---:|:---:|\n|<ul><li>- [ ] Done</li></ul>|1|[Polynomial Coefficients](https://uva.onlinejudge.org/index.php?option=onlinejudge&page=show_problem&problem=1046)|UVA|||1|\n|<ul><li>- [ ] Done</li></ul>|2|[Summation of Polynomials](https://uva.onlinejudge.org/index.php?option=onlinejudge&page=show_problem&problem=1243)|UVA|||1|\n|<ul><li>- [ ] Done</li></ul>|3|[Evaluate the polynomial](http://www.spoj.com/problems/POLEVAL/)|SPOJ|||1|\n|<ul><li>- [ ] Done</li></ul>|4|[Polly the Polynomial](https://uva.onlinejudge.org/index.php?option=onlinejudge&page=show_problem&problem=439)|UVA|||1|\n|<ul><li>- [ ] Done</li></ul>|5|[Polynomial Showdown](https://uva.onlinejudge.org/index.php?option=onlinejudge&page=show_problem&problem=328)|UVA|||1|\n|<ul><li>- [ ] Done</li></ul>|6|[Quotient Polynomial](https://uva.onlinejudge.org/index.php?option=onlinejudge&page=show_problem&problem=1660)|UVA|||2|\n|<ul><li>- [ ] Done</li></ul>|7|[The Polynomial Equation](https://uva.onlinejudge.org/index.php?option=onlinejudge&page=show_problem&problem=1267)|UVA|||3|\n|<ul><li>- [ ] Done</li></ul>|8|[Polynomial Remains](https://uva.onlinejudge.org/index.php?option=onlinejudge&page=show_problem&problem=1527)|UVA|||3|\n|<ul><li>- [ ] Done</li></ul>|9|[Polynomial-time Reductions](https://icpcarchive.ecs.baylor.edu/index.php?option=onlinejudge&page=show_problem&problem=2273)|Live Archive|2008|Asia - Hefei|3|\n|<ul><li>- [ ] Done</li></ul>|10|[Polynomial](http://www.spoj.com/problems/POLYNOM/)|SPOJ|||3|\n|<ul><li>- [ ] Done</li></ul>|11|[Polynomial GCD](https://uva.onlinejudge.org/index.php?option=onlinejudge&page=show_problem&problem=1892)|UVA|||5|\n|<ul><li>- [ ] Done</li></ul>|12|[Polynomial f(x) to Polynomial h(x)](http://www.spoj.com/problems/POLTOPOL/)|SPOJ|||5|\n|<ul><li>- [ ] Done</li></ul>|13|[Polynomial Derivative](https://www.urionlinejudge.com.br/judge/en/problems/view/2154)|URI|||5|\n|<ul><li>- [ ] Done</li></ul>|14|[Recover Polynomials](http://www.spoj.com/problems/BTCODE_E/)|SPOJ|||6|\n|<ul><li>- [ ] Done</li></ul>|15|[Polynomial Multiplication](http://acm.timus.ru/problem.aspx?space=1&num=1408)|Timus|||6|\n|<ul><li>- [ ] Done</li></ul>|16|[Polynomial Equations](http://www.spoj.com/problems/POLYEQ/)|SPOJ|||6|\n|<ul><li>- [ ] Done</li></ul>|17|[Irreducible polynomials over GF2](http://www.spoj.com/problems/GF2/)|SPOJ|||6|\n|<ul><li>- [ ] Done</li></ul>|18|[Roots of polynomial](http://www.spoj.com/problems/KMSL4B/)|SPOJ|||7|\n|<ul><li>- [ ] Done</li></ul>|19|[Polynomial Evaluation - Angry Teacher](http://www.spoj.com/problems/MPOLEVAL/)|SPOJ|||7|\n|<ul><li>- [ ] Done</li></ul>|20|[Polynomial Roots](https://uva.onlinejudge.org/index.php?option=onlinejudge&page=show_problem&problem=871)|UVA|||7|\n"
  },
  {
    "path": "categories/059. All_Pair_Shortest_Path_Floyd-Warshall/README.md",
    "content": "# 059. All_Pair_Shortest_Path_Floyd-Warshall\n\n\n| Checkbox | ID | Problem Name|Online Judge|Contest|Difficulty Level|\n|:---:|:---:|:---:|:---:|:---:|:---:|\n|<ul><li>- [ ] Done</li></ul>|1|[MPI Maelstrom](https://uva.onlinejudge.org/index.php?option=onlinejudge&page=show_problem&problem=364)|UVA||1|\n|<ul><li>- [ ] Done</li></ul>|2|[Arbitrage](https://uva.onlinejudge.org/index.php?option=onlinejudge&page=show_problem&problem=40)|UVA||1|\n|<ul><li>- [ ] Done</li></ul>|3|[Arbitrage](http://www.spoj.com/problems/ARBITRAG/)|SPOJ||1|\n|<ul><li>- [ ] Done</li></ul>|4|[Risk](https://uva.onlinejudge.org/index.php?option=onlinejudge&page=show_problem&problem=508)|UVA||1|\n|<ul><li>- [ ] Done</li></ul>|5|[Page Hopping](https://uva.onlinejudge.org/index.php?option=onlinejudge&page=show_problem&problem=762)|UVA||1|\n|<ul><li>- [ ] Done</li></ul>|6|[05-2 Rendezvous](https://uva.onlinejudge.org/index.php?option=onlinejudge&page=show_problem&problem=1956)|UVA||2|\n|<ul><li>- [ ] Done</li></ul>|7|[Non-Stop Travel](https://uva.onlinejudge.org/index.php?option=onlinejudge&page=show_problem&problem=277)|UVA||2|\n|<ul><li>- [ ] Done</li></ul>|8|[Commandos](https://uva.onlinejudge.org/index.php?option=onlinejudge&page=show_problem&problem=2458)|UVA||2|\n|<ul><li>- [ ] Done</li></ul>|9|[Possible Friends](http://www.spoj.com/problems/SOCIALNE/)|SPOJ||2|\n|<ul><li>- [ ] Done</li></ul>|10|[Meeting Prof. Miguel...](https://uva.onlinejudge.org/index.php?option=onlinejudge&page=show_problem&problem=1112)|UVA||2|\n|<ul><li>- [ ] Done</li></ul>|11|[Thunder Mountain](https://uva.onlinejudge.org/index.php?option=onlinejudge&page=show_problem&problem=1744)|UVA||2|\n|<ul><li>- [ ] Done</li></ul>|12|[Trip Routing](https://uva.onlinejudge.org/index.php?option=onlinejudge&page=show_problem&problem=122)|UVA||3|\n|<ul><li>- [ ] Done</li></ul>|13|[Greg and Graph](http://codeforces.com/problemset/problem/295/B)|Codeforces|Codeforces Round #179 (Div. 1) & Codeforces Round #179 (Div. 2)|3|\n|<ul><li>- [ ] Done</li></ul>|14|[Airlines](https://uva.onlinejudge.org/index.php?option=onlinejudge&page=show_problem&problem=1016)|UVA||3|\n|<ul><li>- [ ] Done</li></ul>|15|[Asterix and Obelix](https://uva.onlinejudge.org/index.php?option=onlinejudge&page=show_problem&problem=1187)|UVA||3|\n|<ul><li>- [ ] Done</li></ul>|16|[The Orc Attack](https://uva.onlinejudge.org/index.php?option=onlinejudge&page=show_problem&problem=1734)|UVA||3|\n|<ul><li>- [ ] Done</li></ul>|17|[106 Miles To Chicago](https://www.urionlinejudge.com.br/judge/en/problems/view/1655)|URI||4|\n|<ul><li>- [ ] Done</li></ul>|18|[Road Construction](https://uva.onlinejudge.org/index.php?option=onlinejudge&page=show_problem&problem=1665)|UVA||4|\n"
  },
  {
    "path": "categories/060. LCS/README.md",
    "content": "# 060. LCS\n\n\n| Checkbox | ID | Problem Name|Online Judge|Year|Contest|Difficulty Level|\n|:---:|:---:|:---:|:---:|:---:|:---:|:---:|\n|<ul><li>- [ ] Done</li></ul>|1|[Aibohphobia](http://www.spoj.com/problems/AIBOHP/)|SPOJ|||1|\n|<ul><li>- [ ] Done</li></ul>|2|[Longest Common Subsequence](https://uva.onlinejudge.org/index.php?option=onlinejudge&page=show_problem&problem=1346)|UVA|||1|\n|<ul><li>- [ ] Done</li></ul>|3|[History Grading](https://uva.onlinejudge.org/index.php?option=onlinejudge&page=show_problem&problem=47)|UVA|||1|\n|<ul><li>- [ ] Done</li></ul>|4|[Cross-country](http://www.spoj.com/problems/CRSCNTRY/)|SPOJ|||1|\n|<ul><li>- [ ] Done</li></ul>|5|[Is Bigger Smarter?](https://uva.onlinejudge.org/index.php?option=onlinejudge&page=show_problem&problem=1072)|UVA|||1|\n|<ul><li>- [ ] Done</li></ul>|6|[Common Subsequence](http://poj.org/problem?id=1458)|PKU|||1|\n|<ul><li>- [ ] Done</li></ul>|7|[Advanced Fruits](http://www.spoj.com/problems/ADFRUITS/)|SPOJ|||1|\n|<ul><li>- [ ] Done</li></ul>|8|[Palindrome 2000](http://www.spoj.com/problems/IOIPALIN/)|SPOJ|||1|\n|<ul><li>- [ ] Done</li></ul>|9|[Common Subsequence](http://acm.tju.edu.cn/toj/showp1683.html)|TJU|||1|\n|<ul><li>- [ ] Done</li></ul>|10|[DNA Sequences](http://www.spoj.com/problems/SAMER08D/)|SPOJ|||1|\n|<ul><li>- [ ] Done</li></ul>|11|[The Knapsack Problem](http://www.spoj.com/problems/KNAPSACK/)|SPOJ|||1|\n|<ul><li>- [ ] Done</li></ul>|12|[X-MEN](http://www.spoj.com/problems/XMEN/)|SPOJ|||2|\n|<ul><li>- [ ] Done</li></ul>|13|[Prince and Princess](https://uva.onlinejudge.org/index.php?option=onlinejudge&page=show_problem&problem=1576)|UVA|||2|\n|<ul><li>- [ ] Done</li></ul>|14|[Gargari and Permutations](http://codeforces.com/problemset/problem/463/D)|Codeforces||Codeforces Round #264 (Div. 2)|3|\n|<ul><li>- [ ] Done</li></ul>|15|[Lucky Common Subsequence](http://codeforces.com/problemset/problem/346/B)|Codeforces||Codeforces Round #201 (Div. 1) & Codeforces Round #201 (Div. 2)|5|\n|<ul><li>- [ ] Done</li></ul>|16|[LCS Again](http://codeforces.com/problemset/problem/578/D)|Codeforces||Codeforces Round #320 (Div. 1) [Bayan Thanks-Round] & Codeforces Round #320 (Div. 2) [Bayan Thanks-Round]|8|\n|<ul><li>- [ ] Done</li></ul>|17|[k-longest Common Sequence](https://icpcarchive.ecs.baylor.edu/index.php?option=onlinejudge&page=show_problem&problem=778)|Live Archive|2003|Asia - Beijing|10|\n"
  },
  {
    "path": "categories/061. Aho-Corasick/README.md",
    "content": "# 061. Aho-Corasick\n\n\n| Checkbox | ID | Problem Name|Online Judge|Year|Contest|Difficulty Level|\n|:---:|:---:|:---:|:---:|:---:|:---:|:---:|\n|<ul><li>- [ ] Done</li></ul>|1|[I Love Strings!!](https://uva.onlinejudge.org/index.php?option=onlinejudge&page=show_problem&problem=1620)|UVA|||1|\n|<ul><li>- [ ] Done</li></ul>|2|[Word Puzzles](http://www.spoj.com/problems/WPUZZLES/)|SPOJ|||2|\n|<ul><li>- [ ] Done</li></ul>|3|[Substring Problem](http://www.spoj.com/problems/SUB_PROB/)|SPOJ|||2|\n|<ul><li>- [ ] Done</li></ul>|4|[Emoticons](http://www.spoj.com/problems/EMOTICON/)|SPOJ|||3|\n|<ul><li>- [ ] Done</li></ul>|5|[Censored!](http://acm.timus.ru/problem.aspx?space=1&num=1158)|Timus|||4|\n|<ul><li>- [ ] Done</li></ul>|6|[Substring](https://uva.onlinejudge.org/index.php?option=onlinejudge&page=show_problem&problem=2463)|UVA|||4|\n|<ul><li>- [ ] Done</li></ul>|7|[Lost in Space](https://uva.onlinejudge.org/index.php?option=onlinejudge&page=show_problem&problem=677)|UVA|||5|\n|<ul><li>- [ ] Done</li></ul>|8|[GRE Words Revenge](https://icpcarchive.ecs.baylor.edu/index.php?option=onlinejudge&page=show_problem&problem=4552)|Live Archive|2013|Asia - Chengdu|5|\n|<ul><li>- [ ] Done</li></ul>|9|[Lucky Common Subsequence](http://codeforces.com/problemset/problem/346/B)|Codeforces||Codeforces Round #201 (Div. 1) & Codeforces Round #201 (Div. 2)|5|\n|<ul><li>- [ ] Done</li></ul>|10|[Obscene Words Filter](http://acm.timus.ru/problem.aspx?space=1&num=1269)|Timus|||5|\n|<ul><li>- [ ] Done</li></ul>|11|[Prefixes and suffixes](http://acm.sgu.ru/problem.php?contest=0&problem=505)|SGU|||7|\n|<ul><li>- [ ] Done</li></ul>|12|[Growing Strings](https://uva.onlinejudge.org/index.php?option=onlinejudge&page=show_problem&problem=3396)|UVA|||7|\n|<ul><li>- [ ] Done</li></ul>|13|[Frequency of String](http://codeforces.com/problemset/problem/963/D)|Codeforces||Tinkoff Internship Warmup Round 2018 and Codeforces Round #475 (Div. 1)|8|\n|<ul><li>- [ ] Done</li></ul>|14|[e-Government](http://codeforces.com/problemset/problem/163/E)|Codeforces||VK Cup 2012 Round 2|8|\n|<ul><li>- [ ] Done</li></ul>|15|[Duff is Mad](http://codeforces.com/problemset/problem/587/F)|Codeforces||Codeforces Round #326 (Div. 1)|10|\n|<ul><li>- [ ] Done</li></ul>|16|[Digits of Number Pi](http://codeforces.com/problemset/problem/585/F)|Codeforces||Codeforces Round #325 (Div. 1)|10|\n"
  },
  {
    "path": "categories/062. LCA/README.md",
    "content": "# 062. LCA\n\n\n| Checkbox | ID | Problem Name|Online Judge|Contest|Difficulty Level|\n|:---:|:---:|:---:|:---:|:---:|:---:|\n|<ul><li>- [ ] Done</li></ul>|1|[Lowest Common Ancestor](http://www.spoj.com/problems/LCA/)|SPOJ||1|\n|<ul><li>- [ ] Done</li></ul>|2|[Query on a tree II](http://www.spoj.com/problems/QTREE2/)|SPOJ||1|\n|<ul><li>- [ ] Done</li></ul>|3|[Distance Query](http://www.spoj.com/problems/DISQUERY/)|SPOJ||2|\n|<ul><li>- [ ] Done</li></ul>|4|[Ants Colony](https://www.urionlinejudge.com.br/judge/en/problems/view/1135)|URI||3|\n|<ul><li>- [ ] Done</li></ul>|5|[Lowest Common Ancestor](http://www.codechef.com/problems/TALCA)|CodeChef||3|\n|<ul><li>- [ ] Done</li></ul>|6|[Flea circus](https://uva.onlinejudge.org/index.php?option=onlinejudge&page=show_problem&problem=1879)|UVA||3|\n|<ul><li>- [ ] Done</li></ul>|7|[Distance in the Tree](http://acm.timus.ru/problem.aspx?space=1&num=1471)|Timus||3|\n|<ul><li>- [ ] Done</li></ul>|8|[Ants Colony](https://uva.onlinejudge.org/index.php?option=onlinejudge&page=show_problem&problem=3390)|UVA||3|\n|<ul><li>- [ ] Done</li></ul>|9|[Design Tutorial: Inverse the Problem](http://codeforces.com/problemset/problem/472/D)|Codeforces|Codeforces Round #270|4|\n|<ul><li>- [ ] Done</li></ul>|10|[Tree 2](http://acm.timus.ru/problem.aspx?space=1&num=1752)|Timus||4|\n|<ul><li>- [ ] Done</li></ul>|11|[A and B and Lecture Rooms](http://codeforces.com/problemset/problem/519/E)|Codeforces|Codeforces Round #294 (Div. 2)|4|\n|<ul><li>- [ ] Done</li></ul>|12|[Fools and Roads](http://codeforces.com/problemset/problem/191/C)|Codeforces|Codeforces Round #121 (Div. 1) & Codeforces Round #121 (Div. 2)|4|\n|<ul><li>- [ ] Done</li></ul>|13|[Misha, Grisha and Underground](http://codeforces.com/problemset/problem/832/D)|Codeforces|Codeforces Round #425 (Div. 2)|5|\n|<ul><li>- [ ] Done</li></ul>|14|[Duff in the Army](http://codeforces.com/problemset/problem/587/C)|Codeforces|Codeforces Round #326 (Div. 1) & Codeforces Round #326 (Div. 2)|5|\n|<ul><li>- [ ] Done</li></ul>|15|[FloatingMedian](http://community.topcoder.com/stat?c=problem_statement&pm=6551)|TopCoder|SRM 310 - Div1 medium - Div2 hard] (9990)|6|\n|<ul><li>- [ ] Done</li></ul>|16|[Turning Turtles](http://acm.timus.ru/problem.aspx?space=1&num=1699)|Timus||7|\n"
  },
  {
    "path": "categories/063. EulerianTour/README.md",
    "content": "# 063. EulerianTour\n\n\n| Checkbox | ID | Problem Name|Online Judge|Year|Contest|Difficulty Level|\n|:---:|:---:|:---:|:---:|:---:|:---:|:---:|\n|<ul><li>- [ ] Done</li></ul>|1|[Play on Words](http://www.spoj.com/problems/WORDS1/)|SPOJ|||1|\n|<ul><li>- [ ] Done</li></ul>|2|[The Necklace](https://uva.onlinejudge.org/index.php?option=onlinejudge&page=show_problem&problem=995)|UVA|||1|\n|<ul><li>- [ ] Done</li></ul>|3|[The Postal Worker Rings Once](https://uva.onlinejudge.org/index.php?option=onlinejudge&page=show_problem&problem=53)|UVA|||1|\n|<ul><li>- [ ] Done</li></ul>|4|[Play on Words](https://uva.onlinejudge.org/index.php?option=onlinejudge&page=show_problem&problem=1070)|UVA|||2|\n|<ul><li>- [ ] Done</li></ul>|5|[John's trip](https://uva.onlinejudge.org/index.php?option=onlinejudge&page=show_problem&problem=238)|UVA|||3|\n|<ul><li>- [ ] Done</li></ul>|6|[Bus Routes](http://acm.timus.ru/problem.aspx?space=1&num=1137)|Timus|||3|\n|<ul><li>- [ ] Done</li></ul>|7|[Snow Clearing](https://uva.onlinejudge.org/index.php?option=onlinejudge&page=show_problem&problem=1144)|UVA|||3|\n|<ul><li>- [ ] Done</li></ul>|8|[Catenyms](https://uva.onlinejudge.org/index.php?option=onlinejudge&page=show_problem&problem=1382)|UVA|||4|\n|<ul><li>- [ ] Done</li></ul>|9|[Weird journey](http://codeforces.com/problemset/problem/788/B)|Codeforces||Codeforces Round #407 (Div. 1) & Codeforces Round #407 (Div. 2)|5|\n|<ul><li>- [ ] Done</li></ul>|10|[Islands and Hotel Chains](http://www.spoj.com/problems/HCHAINS/)|SPOJ|||6|\n|<ul><li>- [ ] Done</li></ul>|11|[John's trip](https://icpcarchive.ecs.baylor.edu/index.php?option=onlinejudge&page=show_problem&problem=3518)|Live Archive|1995|Europe - Central|6|\n|<ul><li>- [ ] Done</li></ul>|12|[Tanya and Password](http://codeforces.com/problemset/problem/508/D)|Codeforces||Codeforces Round #288 (Div. 2)|6|\n|<ul><li>- [ ] Done</li></ul>|13|[One-Way Reform](http://codeforces.com/problemset/problem/723/E)|Codeforces||Codeforces Round #375 (Div. 2)|6|\n|<ul><li>- [ ] Done</li></ul>|14|[Traveling Graph](http://codeforces.com/problemset/problem/21/D)|Codeforces||Codeforces Alpha Round #21 (Codeforces format)|8|\n|<ul><li>- [ ] Done</li></ul>|15|[Dominoes](http://codeforces.com/problemset/problem/267/B)|Codeforces||Codeforces Testing Round #5|8|\n"
  },
  {
    "path": "categories/064. Strongly_Connected_Components/README.md",
    "content": "# 064. Strongly_Connected_Components\n\n\n| Checkbox | ID | Problem Name|Online Judge|Contest|Difficulty Level|\n|:---:|:---:|:---:|:---:|:---:|:---:|\n|<ul><li>- [ ] Done</li></ul>|1|[Calling Circles](https://uva.onlinejudge.org/index.php?option=onlinejudge&page=show_problem&problem=183)|UVA||1|\n|<ul><li>- [ ] Done</li></ul>|2|[Capital City](http://www.spoj.com/problems/CAPCITY/)|SPOJ||1|\n|<ul><li>- [ ] Done</li></ul>|3|[Submerging Islands](http://www.spoj.com/problems/SUBMERGE/)|SPOJ||1|\n|<ul><li>- [ ] Done</li></ul>|4|[Dominos](https://uva.onlinejudge.org/index.php?option=onlinejudge&page=show_problem&problem=2499)|UVA||1|\n|<ul><li>- [ ] Done</li></ul>|5|[Lighting Away](https://uva.onlinejudge.org/index.php?option=onlinejudge&page=show_problem&problem=2870)|UVA||2|\n|<ul><li>- [ ] Done</li></ul>|6|[Come and Go](https://uva.onlinejudge.org/index.php?option=onlinejudge&page=show_problem&problem=2938)|UVA||2|\n|<ul><li>- [ ] Done</li></ul>|7|[The Ant](http://www.spoj.com/problems/ANTTT/)|SPOJ||2|\n|<ul><li>- [ ] Done</li></ul>|8|[Doves and bombs](https://uva.onlinejudge.org/index.php?option=onlinejudge&page=show_problem&problem=1706)|UVA||2|\n|<ul><li>- [ ] Done</li></ul>|9|[Checkposts](http://codeforces.com/problemset/problem/427/C)|Codeforces|Codeforces Round #244 (Div. 2)|2|\n|<ul><li>- [ ] Done</li></ul>|10|[Trust groups](https://uva.onlinejudge.org/index.php?option=onlinejudge&page=show_problem&problem=2756)|UVA||2|\n|<ul><li>- [ ] Done</li></ul>|11|[True Friends](http://www.spoj.com/problems/TFRIENDS/)|SPOJ||2|\n|<ul><li>- [ ] Done</li></ul>|12|[Test](https://uva.onlinejudge.org/index.php?option=onlinejudge&page=show_problem&problem=1672)|UVA||3|\n|<ul><li>- [ ] Done</li></ul>|13|[Sub-dictionary](https://uva.onlinejudge.org/index.php?option=onlinejudge&page=show_problem&problem=3670)|UVA||4|\n|<ul><li>- [ ] Done</li></ul>|14|[Ralph and Mushrooms](http://codeforces.com/problemset/problem/894/E)|Codeforces|Codeforces Round #447 (Div. 2)|7|\n|<ul><li>- [ ] Done</li></ul>|15|[Scheme](http://codeforces.com/problemset/problem/22/E)|Codeforces|Codeforces Beta Round #22 (Div. 2 Only)|8|\n"
  },
  {
    "path": "categories/065. interactive/README.md",
    "content": "# 065. interactive\n\n\n| Checkbox | ID | Problem Name|Online Judge|Contest|Difficulty Level|\n|:---:|:---:|:---:|:---:|:---:|:---:|\n|<ul><li>- [ ] Done</li></ul>|1|[Bear and Prime 100](http://codeforces.com/problemset/problem/679/A)|Codeforces|Codeforces Round #356 (Div. 1) & Codeforces Round #356 (Div. 2)|2|\n|<ul><li>- [ ] Done</li></ul>|2|[Guess the Array](http://codeforces.com/problemset/problem/727/C)|Codeforces|Technocup 2017 - Elimination Round 1 (Unofficially Open for Everyone, Rated for Div. 2)|4|\n|<ul><li>- [ ] Done</li></ul>|3|[Interactive LowerBound](http://codeforces.com/problemset/problem/843/B)|Codeforces|AIM Tech Round 4 (Div. 1) & AIM Tech Round 4 (Div. 2)|5|\n|<ul><li>- [ ] Done</li></ul>|4|[Pick Heroes](http://codeforces.com/problemset/problem/1056/C)|Codeforces|Mail.Ru Cup 2018 Round 3|5|\n|<ul><li>- [ ] Done</li></ul>|5|[Mahmoud and Ehab and the binary string](http://codeforces.com/problemset/problem/862/D)|Codeforces|Codeforces Round #435 (Div. 2)|6|\n|<ul><li>- [ ] Done</li></ul>|6|[Searching Rectangles](http://codeforces.com/problemset/problem/713/B)|Codeforces|Codeforces Round #371 (Div. 1) & Codeforces Round #371 (Div. 2)|6|\n|<ul><li>- [ ] Done</li></ul>|7|[Glad to see you!](http://codeforces.com/problemset/problem/809/B)|Codeforces|Codeforces Round #415 (Div. 1) & Codeforces Round #415 (Div. 2)|6|\n|<ul><li>- [ ] Done</li></ul>|8|[Subway Pursuit](http://codeforces.com/problemset/problem/1039/B)|Codeforces|Codeforces Round #507 (Div. 1, based on Olympiad of Metropolises) & Codeforces Round #507 (Div. 2, based on Olympiad of Metropolises)|6|\n|<ul><li>- [ ] Done</li></ul>|9|[Vladik and Favorite Game](http://codeforces.com/problemset/problem/811/D)|Codeforces|Codeforces Round #416 (Div. 2)|6|\n|<ul><li>- [ ] Done</li></ul>|10|[Divisors](http://codeforces.com/problemset/problem/1033/D)|Codeforces|Lyft Level 5 Challenge 2018 - Elimination Round|6|\n|<ul><li>- [ ] Done</li></ul>|11|[Interactive Bulls and Cows (Easy)](http://codeforces.com/problemset/problem/753/B)|Codeforces|Testing Round #13|7|\n|<ul><li>- [ ] Done</li></ul>|12|[Something with XOR Queries](http://codeforces.com/problemset/problem/870/D)|Codeforces|Technocup 2018 - Elimination Round 2|7|\n|<ul><li>- [ ] Done</li></ul>|13|[The penguin's game](http://codeforces.com/problemset/problem/835/E)|Codeforces|Codeforces Round #427 (Div. 2)|8|\n|<ul><li>- [ ] Done</li></ul>|14|[Lost Root](http://codeforces.com/problemset/problem/1061/F)|Codeforces|Codeforces Round #523 (Div. 2)|9|\n|<ul><li>- [ ] Done</li></ul>|15|[Interactive Bulls and Cows (Hard)](http://codeforces.com/problemset/problem/753/C)|Codeforces|Testing Round #13|9|\n"
  },
  {
    "path": "categories/066. back-tracking/README.md",
    "content": "# 066. back-tracking\n\n\n| Checkbox | ID | Problem Name|Online Judge|Year|Contest|Difficulty Level|\n|:---:|:---:|:---:|:---:|:---:|:---:|:---:|\n|<ul><li>- [ ] Done</li></ul>|1|[Bit Compressor](https://icpcarchive.ecs.baylor.edu/index.php?option=onlinejudge&page=show_problem&problem=1566)|Live Archive|2006|World Finals - San Antonio|1|\n|<ul><li>- [ ] Done</li></ul>|2|[Pyramids](https://icpcarchive.ecs.baylor.edu/index.php?option=onlinejudge&page=show_problem&problem=3138)|Live Archive|2011|World Finals - Orlando|1|\n|<ul><li>- [ ] Done</li></ul>|3|[Prime Ring Problem](https://uva.onlinejudge.org/index.php?option=onlinejudge&page=show_problem&problem=465)|UVA|||1|\n|<ul><li>- [ ] Done</li></ul>|4|[Robots on Ice](https://icpcarchive.ecs.baylor.edu/index.php?option=onlinejudge&page=show_problem&problem=2794)|Live Archive|2010|World Finals - Harbin|1|\n|<ul><li>- [ ] Done</li></ul>|5|[CD](https://uva.onlinejudge.org/index.php?option=onlinejudge&page=show_problem&problem=565)|UVA|||1|\n|<ul><li>- [ ] Done</li></ul>|6|[The Cubic End](https://icpcarchive.ecs.baylor.edu/index.php?option=onlinejudge&page=show_problem&problem=1496)|Live Archive|2005|North America - Greater NY|2|\n|<ul><li>- [ ] Done</li></ul>|7|[Huffman Codes](https://icpcarchive.ecs.baylor.edu/index.php?option=onlinejudge&page=show_problem&problem=2123)|Live Archive|2008|World Finals - Banff|2|\n|<ul><li>- [ ] Done</li></ul>|8|[My T-shirt suits me](https://uva.onlinejudge.org/index.php?option=onlinejudge&page=show_problem&problem=1986)|UVA|||2|\n|<ul><li>- [ ] Done</li></ul>|9|[Pride and Prejudice and Zombies](https://icpcarchive.ecs.baylor.edu/index.php?option=onlinejudge&page=show_problem&problem=3124)|Live Archive|2010|North America - Pacific Northwest|3|\n|<ul><li>- [ ] Done</li></ul>|10|[House of Cards](https://icpcarchive.ecs.baylor.edu/index.php?option=onlinejudge&page=show_problem&problem=2452)|Live Archive|2009|World Finals - Stockholm|3|\n|<ul><li>- [ ] Done</li></ul>|11|[Tony's Tour](http://poj.org/problem?id=1739)|PKU|||3|\n|<ul><li>- [ ] Done</li></ul>|12|[Zombie Swallows](https://icpcarchive.ecs.baylor.edu/index.php?option=onlinejudge&page=show_problem&problem=3122)|Live Archive|2010|North America - Pacific Northwest|4|\n|<ul><li>- [ ] Done</li></ul>|13|[Crossword Puzzle](https://icpcarchive.ecs.baylor.edu/index.php?option=onlinejudge&page=show_problem&problem=235)|Live Archive|2001|World Finals - Vancouver|5|\n|<ul><li>- [ ] Done</li></ul>|14|[The Primes](http://poj.org/problem?id=1165)|PKU|||5|\n"
  },
  {
    "path": "categories/067. Lowest_Common_Ancestor/README.md",
    "content": "# 067. Lowest_Common_Ancestor\n\n\n| Checkbox | ID | Problem Name|Online Judge|Year|Contest|Difficulty Level|\n|:---:|:---:|:---:|:---:|:---:|:---:|:---:|\n|<ul><li>- [ ] Done</li></ul>|1|[Lowest Common Ancestor](http://www.spoj.com/problems/LCA/)|SPOJ|||1|\n|<ul><li>- [ ] Done</li></ul>|2|[Query on a tree II](http://www.spoj.com/problems/QTREE2/)|SPOJ|||1|\n|<ul><li>- [ ] Done</li></ul>|3|[Query on a tree](http://www.spoj.com/problems/QTREE/)|SPOJ|||1|\n|<ul><li>- [ ] Done</li></ul>|4|[Ancestor](http://acm.tju.edu.cn/toj/showp2241.html)|TJU|||2|\n|<ul><li>- [ ] Done</li></ul>|5|[Closest Common Ancestors](http://acm.tju.edu.cn/toj/showp1051.html)|TJU|||2|\n|<ul><li>- [ ] Done</li></ul>|6|[Joining Couples](https://icpcarchive.ecs.baylor.edu/index.php?option=onlinejudge&page=show_problem&problem=4151)|Live Archive|2012|Latin America|2|\n|<ul><li>- [ ] Done</li></ul>|7|[Distance Query](http://www.spoj.com/problems/DISQUERY/)|SPOJ|||2|\n|<ul><li>- [ ] Done</li></ul>|8|[Flea circus](https://uva.onlinejudge.org/index.php?option=onlinejudge&page=show_problem&problem=1879)|UVA|||3|\n|<ul><li>- [ ] Done</li></ul>|9|[Ants Colony](https://uva.onlinejudge.org/index.php?option=onlinejudge&page=show_problem&problem=3390)|UVA|||3|\n|<ul><li>- [ ] Done</li></ul>|10|[Fools and Roads](http://codeforces.com/problemset/problem/191/C)|Codeforces||Codeforces Round #121 (Div. 1) & Codeforces Round #121 (Div. 2)|4|\n|<ul><li>- [ ] Done</li></ul>|11|[A and B and Lecture Rooms](http://codeforces.com/problemset/problem/519/E)|Codeforces||Codeforces Round #294 (Div. 2)|4|\n|<ul><li>- [ ] Done</li></ul>|12|[Children Trips](http://www.codechef.com/problems/TRIPS)|CodeChef|||5|\n|<ul><li>- [ ] Done</li></ul>|13|[Duff in the Army](http://codeforces.com/problemset/problem/587/C)|Codeforces||Codeforces Round #326 (Div. 1) & Codeforces Round #326 (Div. 2)|5|\n|<ul><li>- [ ] Done</li></ul>|14|[Beard Graph](http://codeforces.com/problemset/problem/165/D)|Codeforces||Codeforces Round #112 (Div. 2)|7|\n"
  },
  {
    "path": "categories/068. Suffix_automaton/README.md",
    "content": "# 068. Suffix_automaton\n\n\n| Checkbox | ID | Problem Name|Online Judge|Contest|Difficulty Level|\n|:---:|:---:|:---:|:---:|:---:|:---:|\n|<ul><li>- [ ] Done</li></ul>|1|[Long Long Message](http://poj.org/problem?id=2774)|PKU||1|\n|<ul><li>- [ ] Done</li></ul>|2|[Longest Common Substring](http://www.spoj.com/problems/LCS/)|SPOJ||1|\n|<ul><li>- [ ] Done</li></ul>|3|[Lexicographical Substring Search](http://www.spoj.com/problems/SUBLEX/)|SPOJ||1|\n|<ul><li>- [ ] Done</li></ul>|4|[Longest Common Substring II ](http://www.spoj.com/problems/LCS2/)|SPOJ||2|\n|<ul><li>- [ ] Done</li></ul>|5|[Substrings](http://www.spoj.com/problems/NSUBSTR/)|SPOJ||2|\n|<ul><li>- [ ] Done</li></ul>|6|[Password](http://codeforces.com/problemset/problem/126/B)|Codeforces|Codeforces Beta Round #93 (Div. 1 Only) & Codeforces Beta Round #93 (Div. 2 Only)|2|\n|<ul><li>- [ ] Done</li></ul>|7|[Substring Query](http://www.codechef.com/problems/SUBQUERY)|CodeChef||3|\n|<ul><li>- [ ] Done</li></ul>|8|[Substrings on a Tree](http://www.codechef.com/problems/TSUBSTR)|CodeChef||4|\n|<ul><li>- [ ] Done</li></ul>|9|[Prefixes and Suffixes](http://codeforces.com/problemset/problem/432/D)|Codeforces|Codeforces Round #246 (Div. 2)|4|\n|<ul><li>- [ ] Done</li></ul>|10|[Martian Strings](http://codeforces.com/problemset/problem/149/E)|Codeforces|Codeforces Round #106 (Div. 2)|6|\n|<ul><li>- [ ] Done</li></ul>|11|[Cyclical Quest](http://codeforces.com/problemset/problem/235/C)|Codeforces|Codeforces Round #146 (Div. 1) & Codeforces Round #146 (Div. 2)|7|\n|<ul><li>- [ ] Done</li></ul>|12|[Three strings](http://codeforces.com/problemset/problem/452/E)|Codeforces|MemSQL Start[c]UP 2.0 - Round 1|8|\n|<ul><li>- [ ] Done</li></ul>|13|[String](http://codeforces.com/problemset/problem/123/D)|Codeforces|Codeforces Beta Round #92 (Div. 1 Only)|8|\n|<ul><li>- [ ] Done</li></ul>|14|[Deletion of Repeats](http://codeforces.com/problemset/problem/19/C)|Codeforces|Codeforces Beta Round #19|8|\n"
  },
  {
    "path": "categories/069. Centroid_Decomposition/README.md",
    "content": "# 069. Centroid_Decomposition\n\n\n| Checkbox | ID | Problem Name|Online Judge|Contest|Difficulty Level|\n|:---:|:---:|:---:|:---:|:---:|:---:|\n|<ul><li>- [ ] Done</li></ul>|1|[The Decoder](https://uva.onlinejudge.org/index.php?option=onlinejudge&page=show_problem&problem=399)|UVA||1|\n|<ul><li>- [ ] Done</li></ul>|2|[Query on a tree V](http://www.spoj.com/problems/QTREE5/)|SPOJ||2|\n|<ul><li>- [ ] Done</li></ul>|3|[Distance in Tree](http://codeforces.com/problemset/problem/161/D)|Codeforces|VK Cup 2012 Round 1|3|\n|<ul><li>- [ ] Done</li></ul>|4|[Prime Distance On Tree](http://www.codechef.com/problems/PRIMEDST)|CodeChef||3|\n|<ul><li>- [ ] Done</li></ul>|5|[Gao on a tree](http://www.spoj.com/problems/GOT/)|SPOJ||3|\n|<ul><li>- [ ] Done</li></ul>|6|[Ciel the Commander](http://codeforces.com/problemset/problem/321/C)|Codeforces|Codeforces Round #190 (Div. 1) & Codeforces Round #190 (Div. 2)|4|\n|<ul><li>- [ ] Done</li></ul>|7|[Xenia and Tree](http://codeforces.com/problemset/problem/342/E)|Codeforces|Codeforces Round #199 (Div. 2)|4|\n|<ul><li>- [ ] Done</li></ul>|8|[Vacation](http://www.codechef.com/problems/TESTERS)|CodeChef||6|\n|<ul><li>- [ ] Done</li></ul>|9|[Black and White Tree](http://www.codechef.com/problems/GERALD2)|CodeChef||6|\n|<ul><li>- [ ] Done</li></ul>|10|[New Year Tree](http://codeforces.com/problemset/problem/379/F)|Codeforces|Good Bye 2013|6|\n|<ul><li>- [ ] Done</li></ul>|11|[Union on Tree](http://www.codechef.com/problems/BTREE)|CodeChef||7|\n|<ul><li>- [ ] Done</li></ul>|12|[Rowena Ravenclaw's Diadem](http://codeforces.com/problemset/problem/855/D)|Codeforces|Manthan, Codefest 17|8|\n|<ul><li>- [ ] Done</li></ul>|13|[Sagheer and Kindergarten](http://codeforces.com/problemset/problem/812/D)|Codeforces|Codeforces Round #417 (Div. 2)|9|\n|<ul><li>- [ ] Done</li></ul>|14|[Arkady and a Nobody-men](http://codeforces.com/problemset/problem/860/E)|Codeforces|Codeforces Round #434 (Div. 1, based on Technocup 2018 Elimination Round 1)|9|\n"
  },
  {
    "path": "categories/070. line_sweep/README.md",
    "content": "# 070. line_sweep\n\n\n| Checkbox | ID | Problem Name|Online Judge|Year|Contest|Difficulty Level|\n|:---:|:---:|:---:|:---:|:---:|:---:|:---:|\n|<ul><li>- [ ] Done</li></ul>|1|[The Closest Pair Problem](https://uva.onlinejudge.org/index.php?option=onlinejudge&page=show_problem&problem=1186)|UVA|||1|\n|<ul><li>- [ ] Done</li></ul>|2|[Closest Point Pair](http://www.spoj.com/problems/CLOPPAIR/)|SPOJ|||1|\n|<ul><li>- [ ] Done</li></ul>|3|[The day of the competitors](http://www.spoj.com/problems/NICEDAY/)|SPOJ|||1|\n|<ul><li>- [ ] Done</li></ul>|4|[Mummy Madness](https://icpcarchive.ecs.baylor.edu/index.php?option=onlinejudge&page=show_problem&problem=3137)|Live Archive|2011|World Finals - Orlando|2|\n|<ul><li>- [ ] Done</li></ul>|5|[SkyScrapers](http://www.spoj.com/problems/CEPC08B/)|SPOJ|||3|\n|<ul><li>- [ ] Done</li></ul>|6|[November Rain](http://www.spoj.com/problems/RAIN1/)|SPOJ|||3|\n|<ul><li>- [ ] Done</li></ul>|7|[Water Falls](https://uva.onlinejudge.org/index.php?option=onlinejudge&page=show_problem&problem=774)|UVA|||3|\n|<ul><li>- [ ] Done</li></ul>|8|[Triangular Queries](http://www.codechef.com/problems/TRIQUERY)|CodeChef|||3|\n|<ul><li>- [ ] Done</li></ul>|9|[Minion Circle](http://www.codechef.com/problems/CIRCLE)|CodeChef|||4|\n|<ul><li>- [ ] Done</li></ul>|10|[Wireless](http://www.spoj.com/problems/WIRELESS/)|SPOJ|||4|\n|<ul><li>- [ ] Done</li></ul>|11|[Wild West](http://www.spoj.com/problems/WILD/)|SPOJ|||5|\n|<ul><li>- [ ] Done</li></ul>|12|[Bishops](http://www.codechef.com/problems/TABISHOP)|CodeChef|||5|\n|<ul><li>- [ ] Done</li></ul>|13|[Boundary Points](https://uva.onlinejudge.org/index.php?option=onlinejudge&page=show_problem&problem=3647)|UVA|||5|\n"
  },
  {
    "path": "categories/071. Hungarian_Algorithm/README.md",
    "content": "# 071. Hungarian_Algorithm\n\n\n| Checkbox | ID | Problem Name|Online Judge|Year|Contest|Difficulty Level|\n|:---:|:---:|:---:|:---:|:---:|:---:|:---:|\n|<ul><li>- [ ] Done</li></ul>|1|[Asteroids](http://poj.org/problem?id=3041)|PKU|||1|\n|<ul><li>- [ ] Done</li></ul>|2|[The Great Wall Game](https://icpcarchive.ecs.baylor.edu/index.php?option=onlinejudge&page=show_problem&problem=1277)|Live Archive|2005|World Finals - Shanghai|1|\n|<ul><li>- [ ] Done</li></ul>|3|[Antenna Placement](http://poj.org/problem?id=3020)|PKU|||2|\n|<ul><li>- [ ] Done</li></ul>|4|[Selfish Cities](http://www.spoj.com/problems/SCITIES/)|SPOJ|||2|\n|<ul><li>- [ ] Done</li></ul>|5|[Baby](http://www.spoj.com/problems/BABY/)|SPOJ|||2|\n|<ul><li>- [ ] Done</li></ul>|6|[Beloved Sons](http://acm.sgu.ru/problem.php?contest=0&problem=210)|SGU|||3|\n|<ul><li>- [ ] Done</li></ul>|7|[Crime Wave - The Sequel](https://uva.onlinejudge.org/index.php?option=onlinejudge&page=show_problem&problem=1687)|UVA|||3|\n|<ul><li>- [ ] Done</li></ul>|8|[Jogging Trails](https://uva.onlinejudge.org/index.php?option=onlinejudge&page=show_problem&problem=1237)|UVA|||3|\n|<ul><li>- [ ] Done</li></ul>|9|[Golden Tiger Claw](https://uva.onlinejudge.org/index.php?option=onlinejudge&page=show_problem&problem=2378)|UVA|||4|\n|<ul><li>- [ ] Done</li></ul>|10|[Warehouse](https://uva.onlinejudge.org/index.php?option=onlinejudge&page=show_problem&problem=1829)|UVA|||4|\n|<ul><li>- [ ] Done</li></ul>|11|[30 Minutes or Less](https://uva.onlinejudge.org/index.php?option=onlinejudge&page=show_problem&problem=4385)|UVA|||6|\n|<ul><li>- [ ] Done</li></ul>|12|[Gödel's Dream](https://uva.onlinejudge.org/index.php?option=onlinejudge&page=show_problem&problem=4386)|UVA|||7|\n|<ul><li>- [ ] Done</li></ul>|13|[Deciphering](http://codeforces.com/problemset/problem/491/C)|Codeforces||Testing Round #11|9|\n"
  },
  {
    "path": "categories/072. Reasoning/README.md",
    "content": "# 072. Reasoning\n\n\n| Checkbox | ID | Problem Name|Online Judge|Difficulty Level|\n|:---:|:---:|:---:|:---:|:---:|\n|<ul><li>- [ ] Done</li></ul>|1|[Why this kolaveri di](http://www.spoj.com/problems/WTK/)|SPOJ|1|\n|<ul><li>- [ ] Done</li></ul>|2|[DOTA HEROES](http://www.spoj.com/problems/DOTAA/)|SPOJ|1|\n|<ul><li>- [ ] Done</li></ul>|3|[FANCY NUMBERS](http://www.spoj.com/problems/FANCY/)|SPOJ|1|\n|<ul><li>- [ ] Done</li></ul>|4|[HOW MANY GAMES](http://www.spoj.com/problems/GAMES/)|SPOJ|1|\n|<ul><li>- [ ] Done</li></ul>|5|[DIE HARD](http://www.spoj.com/problems/DIEHARD/)|SPOJ|1|\n|<ul><li>- [ ] Done</li></ul>|6|[EVEN COUNT](http://www.spoj.com/problems/GEEKOUNT/)|SPOJ|2|\n|<ul><li>- [ ] Done</li></ul>|7|[FUN WITH LETTERS](http://www.spoj.com/problems/FUNNUMS/)|SPOJ|3|\n|<ul><li>- [ ] Done</li></ul>|8|[LUCKYNINE](http://www.spoj.com/problems/NITHY/)|SPOJ|3|\n|<ul><li>- [ ] Done</li></ul>|9|[FOREVER ALONE](http://www.spoj.com/problems/ALONE/)|SPOJ|5|\n|<ul><li>- [ ] Done</li></ul>|10|[THE JUMPING BALL](http://www.spoj.com/problems/JUMPBALL/)|SPOJ|6|\n|<ul><li>- [ ] Done</li></ul>|11|[GAMING ARENA](http://www.spoj.com/problems/GAMARENA/)|SPOJ|6|\n|<ul><li>- [ ] Done</li></ul>|12|[THE N WITTY FRIENDS](http://www.spoj.com/problems/WITTY/)|SPOJ|7|\n|<ul><li>- [ ] Done</li></ul>|13|[TREE SHAPES](http://www.spoj.com/problems/CODEIT01/)|SPOJ|8|\n"
  },
  {
    "path": "categories/073. Gaussian_elimination/README.md",
    "content": "# 073. Gaussian_elimination\n\n\n| Checkbox | ID | Problem Name|Online Judge|Difficulty Level|\n|:---:|:---:|:---:|:---:|:---:|\n|<ul><li>- [ ] Done</li></ul>|1|[Lost in Madrid](http://www.spoj.com/problems/LIM/)|SPOJ|3|\n|<ul><li>- [ ] Done</li></ul>|2|[Going to school](http://www.spoj.com/problems/GS/)|SPOJ|3|\n|<ul><li>- [ ] Done</li></ul>|3|[Central Heating](http://acm.timus.ru/problem.aspx?space=1&num=1042)|Timus|3|\n|<ul><li>- [ ] Done</li></ul>|4|[Integral Determinant](https://uva.onlinejudge.org/index.php?option=onlinejudge&page=show_problem&problem=625)|UVA|4|\n|<ul><li>- [ ] Done</li></ul>|5|[Square](https://uva.onlinejudge.org/index.php?option=onlinejudge&page=show_problem&problem=2537)|UVA|4|\n|<ul><li>- [ ] Done</li></ul>|6|[Solving Systems of Linear Equations](https://uva.onlinejudge.org/index.php?option=onlinejudge&page=show_problem&problem=1050)|UVA|5|\n|<ul><li>- [ ] Done</li></ul>|7|[Organising the Organisation](https://uva.onlinejudge.org/index.php?option=onlinejudge&page=show_problem&problem=1707)|UVA|5|\n|<ul><li>- [ ] Done</li></ul>|8|[Back to Kernighan-Ritchie](https://uva.onlinejudge.org/index.php?option=onlinejudge&page=show_problem&problem=1769)|UVA|5|\n|<ul><li>- [ ] Done</li></ul>|9|[Stupid Sequence](https://uva.onlinejudge.org/index.php?option=onlinejudge&page=show_problem&problem=2294)|UVA|5|\n|<ul><li>- [ ] Done</li></ul>|10|[Kirchhof Law](http://www.spoj.com/problems/RESIST/)|SPOJ|5|\n|<ul><li>- [ ] Done</li></ul>|11|[Table Tennis](https://uva.onlinejudge.org/index.php?option=onlinejudge&page=show_problem&problem=2855)|UVA|7|\n"
  },
  {
    "path": "categories/074. DFS_BFS/README.md",
    "content": "# 074. DFS_BFS\n\n\n| Checkbox | ID | Problem Name|Online Judge|Year|Contest|Difficulty Level|\n|:---:|:---:|:---:|:---:|:---:|:---:|:---:|\n|<ul><li>- [ ] Done</li></ul>|1|[Lucius Dungeon](http://www.spoj.com/problems/BYTESE1/)|SPOJ|||1|\n|<ul><li>- [ ] Done</li></ul>|2|[Graph Connectivity](https://uva.onlinejudge.org/index.php?option=onlinejudge&page=show_problem&problem=400)|UVA|||1|\n|<ul><li>- [ ] Done</li></ul>|3|[Bitmap](http://www.spoj.com/problems/BITMAP/)|SPOJ|||1|\n|<ul><li>- [ ] Done</li></ul>|4|[Tic-Tac-Toe ( II )](http://www.spoj.com/problems/TOE2/)|SPOJ|||1|\n|<ul><li>- [ ] Done</li></ul>|5|[ALL IZZ WELL](http://www.spoj.com/problems/ALLIZWEL/)|SPOJ|||1|\n|<ul><li>- [ ] Done</li></ul>|6|[VALIDATE THE MAZE](http://www.spoj.com/problems/MAKEMAZE/)|SPOJ|||1|\n|<ul><li>- [ ] Done</li></ul>|7|[Fix the Pond](https://icpcarchive.ecs.baylor.edu/index.php?option=onlinejudge&page=show_problem&problem=4147)|Live Archive|2012|Latin America|2|\n|<ul><li>- [ ] Done</li></ul>|8|[THE WEIRD STAIRCASE](http://www.spoj.com/problems/STAR3CAS/)|SPOJ|||3|\n|<ul><li>- [ ] Done</li></ul>|9|[GRAVITY](http://www.spoj.com/problems/GRAVITY/)|SPOJ|||5|\n|<ul><li>- [ ] Done</li></ul>|10|[Fix the Pond](https://uva.onlinejudge.org/index.php?option=onlinejudge&page=show_problem&problem=3974)|UVA|||5|\n"
  },
  {
    "path": "categories/075. Coin_Change/README.md",
    "content": "# 075. Coin_Change\n\n\n| Checkbox | ID | Problem Name|Online Judge|Difficulty Level|\n|:---:|:---:|:---:|:---:|:---:|\n|<ul><li>- [ ] Done</li></ul>|1|[Ingenuous Cubrency](https://uva.onlinejudge.org/index.php?option=onlinejudge&page=show_problem&problem=2078)|UVA|1|\n|<ul><li>- [ ] Done</li></ul>|2|[Coin Change](https://uva.onlinejudge.org/index.php?option=onlinejudge&page=show_problem&problem=615)|UVA|1|\n|<ul><li>- [ ] Done</li></ul>|3|[Making Change](http://acm.tju.edu.cn/toj/showp2768.html)|TJU|1|\n|<ul><li>- [ ] Done</li></ul>|4|[Let Me Count The Ways](https://uva.onlinejudge.org/index.php?option=onlinejudge&page=show_problem&problem=293)|UVA|1|\n|<ul><li>- [ ] Done</li></ul>|5|[Dollars](https://uva.onlinejudge.org/index.php?option=onlinejudge&page=show_problem&problem=83)|UVA|1|\n|<ul><li>- [ ] Done</li></ul>|6|[Making Change](https://uva.onlinejudge.org/index.php?option=onlinejudge&page=show_problem&problem=102)|UVA|2|\n|<ul><li>- [ ] Done</li></ul>|7|[Pay the Price](https://uva.onlinejudge.org/index.php?option=onlinejudge&page=show_problem&problem=1254)|UVA|2|\n|<ul><li>- [ ] Done</li></ul>|8|[Exact Change](https://uva.onlinejudge.org/index.php?option=onlinejudge&page=show_problem&problem=2512)|UVA|2|\n|<ul><li>- [ ] Done</li></ul>|9|[e-Coins](https://uva.onlinejudge.org/index.php?option=onlinejudge&page=show_problem&problem=1247)|UVA|2|\n|<ul><li>- [ ] Done</li></ul>|10|[Charu and Coin Distribution](http://www.spoj.com/problems/CBANK/)|SPOJ|3|\n"
  },
  {
    "path": "categories/076. Strategy/README.md",
    "content": "# 076. Strategy\n\n\n| Checkbox | ID | Problem Name|Online Judge|Year|Contest|Difficulty Level|\n|:---:|:---:|:---:|:---:|:---:|:---:|:---:|\n|<ul><li>- [ ] Done</li></ul>|1|[DOTA HEROES](http://www.spoj.com/problems/DOTAA/)|SPOJ|||1|\n|<ul><li>- [ ] Done</li></ul>|2|[LUCKYNINE](http://www.spoj.com/problems/NITHY/)|SPOJ|||3|\n|<ul><li>- [ ] Done</li></ul>|3|[TRIVIADOR](http://www.spoj.com/problems/TWOKINGS/)|SPOJ|||3|\n|<ul><li>- [ ] Done</li></ul>|4|[Car with powers](http://www.spoj.com/problems/POWERCAR/)|SPOJ|||3|\n|<ul><li>- [ ] Done</li></ul>|5|[Soldiers](https://icpcarchive.ecs.baylor.edu/index.php?option=onlinejudge&page=show_problem&problem=275)|Live Archive|2001|Europe - Southeastern|6|\n|<ul><li>- [ ] Done</li></ul>|6|[GAMING ARENA](http://www.spoj.com/problems/GAMARENA/)|SPOJ|||6|\n|<ul><li>- [ ] Done</li></ul>|7|[FLING1](http://www.spoj.com/problems/FLING1/)|SPOJ|||6|\n|<ul><li>- [ ] Done</li></ul>|8|[TWO KINGS](http://www.spoj.com/problems/CONQUER/)|SPOJ|||9|\n|<ul><li>- [ ] Done</li></ul>|9|[BLOCK_D SOLVER](http://www.spoj.com/problems/BLOCK_D/)|SPOJ|||9|\n|<ul><li>- [ ] Done</li></ul>|10|[THE WITTY BOY](http://www.spoj.com/problems/WITTYBOY/)|SPOJ|||10|\n"
  },
  {
    "path": "categories/077. Mobius_Function/README.md",
    "content": "# 077. Mobius_Function\n\n\n| Checkbox | ID | Problem Name|Online Judge|Year|Contest|Difficulty Level|\n|:---:|:---:|:---:|:---:|:---:|:---:|:---:|\n|<ul><li>- [ ] Done</li></ul>|1|[LCM Sum](http://www.spoj.com/problems/LCMSUM/)|SPOJ|||1|\n|<ul><li>- [ ] Done</li></ul>|2|[Panoramix's Prediction](http://codeforces.com/problemset/problem/80/A)|Codeforces||Codeforces Beta Round #69 (Div. 2 Only)|1|\n|<ul><li>- [ ] Done</li></ul>|3|[Coprime Triples](http://www.codechef.com/problems/COPRIME3)|CodeChef|||1|\n|<ul><li>- [ ] Done</li></ul>|4|[GCD Extreme](http://www.spoj.com/problems/GCDEX/)|SPOJ|||1|\n|<ul><li>- [ ] Done</li></ul>|5|[Sky Code](https://icpcarchive.ecs.baylor.edu/index.php?option=onlinejudge&page=show_problem&problem=2185)|Live Archive|2008|Europe - Southeastern|2|\n|<ul><li>- [ ] Done</li></ul>|6|[Expected Greatest Common Divisor](http://www.codechef.com/problems/EXGCD)|CodeChef|||3|\n|<ul><li>- [ ] Done</li></ul>|7|[Adding Least Common Multiples](http://www.codechef.com/problems/LCM)|CodeChef|||5|\n|<ul><li>- [ ] Done</li></ul>|8|[Unusual Sequences](http://codeforces.com/problemset/problem/900/D)|Codeforces||Codeforces Round #450 (Div. 2)|6|\n|<ul><li>- [ ] Done</li></ul>|9|[Mobius Multiplications](http://www.codechef.com/problems/ENCODE07)|CodeChef|||7|\n|<ul><li>- [ ] Done</li></ul>|10|[GCD Extreme (hard)](http://www.spoj.com/problems/GCDEX2/)|SPOJ|||7|\n"
  },
  {
    "path": "categories/078. Math_Games/README.md",
    "content": "# 078. Math_Games\n\n\n| Checkbox | ID | Problem Name|Online Judge|Difficulty Level|\n|:---:|:---:|:---:|:---:|:---:|\n|<ul><li>- [ ] Done</li></ul>|1|[M&M Game](http://www.spoj.com/problems/MMMGAME/)|SPOJ|1|\n|<ul><li>- [ ] Done</li></ul>|2|[Playing With Balls](http://www.spoj.com/problems/IITKWPCN/)|SPOJ|1|\n|<ul><li>- [ ] Done</li></ul>|3|[Happy Coins](http://www.spoj.com/problems/HC/)|SPOJ|1|\n|<ul><li>- [ ] Done</li></ul>|4|[The Game](http://www.spoj.com/problems/QCJ3/)|SPOJ|2|\n|<ul><li>- [ ] Done</li></ul>|5|[A Coin Game](http://www.spoj.com/problems/XOINC/)|SPOJ|2|\n|<ul><li>- [ ] Done</li></ul>|6|[Face the mate](http://www.spoj.com/problems/FACENEMY/)|SPOJ|4|\n|<ul><li>- [ ] Done</li></ul>|7|[Number Game](http://www.spoj.com/problems/NUMGAME/)|SPOJ|5|\n|<ul><li>- [ ] Done</li></ul>|8|[GAMING ARENA](http://www.spoj.com/problems/GAMARENA/)|SPOJ|6|\n|<ul><li>- [ ] Done</li></ul>|9|[Black and White Nim](http://www.spoj.com/problems/BNWNIM/)|SPOJ|6|\n"
  },
  {
    "path": "categories/079. Edit_Distance/README.md",
    "content": "# 079. Edit_Distance\n\n\n| Checkbox | ID | Problem Name|Online Judge|Year|Contest|Difficulty Level|\n|:---:|:---:|:---:|:---:|:---:|:---:|:---:|\n|<ul><li>- [ ] Done</li></ul>|1|[Minimum Cost](http://www.spoj.com/problems/MC/)|SPOJ|||1|\n|<ul><li>- [ ] Done</li></ul>|2|[Edit distance](http://www.spoj.com/problems/EDIST/)|SPOJ|||1|\n|<ul><li>- [ ] Done</li></ul>|3|[Edit Distance Again](http://www.spoj.com/problems/EDIT/)|SPOJ|||1|\n|<ul><li>- [ ] Done</li></ul>|4|[String Computer](https://uva.onlinejudge.org/index.php?option=onlinejudge&page=show_problem&problem=100)|UVA|||2|\n|<ul><li>- [ ] Done</li></ul>|5|[String Distance and Transform Process](https://uva.onlinejudge.org/index.php?option=onlinejudge&page=show_problem&problem=467)|UVA|||2|\n|<ul><li>- [ ] Done</li></ul>|6|[AGTC](https://uva.onlinejudge.org/index.php?option=onlinejudge&page=show_problem&problem=3648)|UVA|||3|\n|<ul><li>- [ ] Done</li></ul>|7|[Edit Distance](https://icpcarchive.ecs.baylor.edu/index.php?option=onlinejudge&page=show_problem&problem=2899)|Live Archive|2010|North America - North Central NA|5|\n|<ul><li>- [ ] Done</li></ul>|8|[Edit Distance](http://www.spoj.com/problems/EDDIST/)|SPOJ|||5|\n|<ul><li>- [ ] Done</li></ul>|9|[I Like Uppercase Palindrome](http://www.spoj.com/problems/PLNDRM1/)|SPOJ|||8|\n"
  },
  {
    "path": "categories/080. ad_hoc/README.md",
    "content": "# 080. ad_hoc\n\n\n| Checkbox | ID | Problem Name|Online Judge|Contest|Difficulty Level|\n|:---:|:---:|:---:|:---:|:---:|:---:|\n|<ul><li>- [ ] Done</li></ul>|1|[The Eternal Immortality](http://codeforces.com/problemset/problem/869/B)|Codeforces|Codeforces Round #439 (Div. 2)|1|\n|<ul><li>- [ ] Done</li></ul>|2|[Even Numbers](http://www.spoj.com/problems/EC_CONB/)|SPOJ||1|\n|<ul><li>- [ ] Done</li></ul>|3|[Cards](http://www.spoj.com/problems/CRDS/)|SPOJ||1|\n|<ul><li>- [ ] Done</li></ul>|4|[Adding Reversed Numbers](http://www.spoj.com/problems/ADDREV/)|SPOJ||1|\n|<ul><li>- [ ] Done</li></ul>|5|[TEX Quotes](https://uva.onlinejudge.org/index.php?option=onlinejudge&page=show_problem&problem=208)|UVA||1|\n|<ul><li>- [ ] Done</li></ul>|6|[Mapmaker](https://uva.onlinejudge.org/index.php?option=onlinejudge&page=show_problem&problem=330)|UVA||2|\n|<ul><li>- [ ] Done</li></ul>|7|[Day of Pay](http://www.spoj.com/problems/DAYOFPAY/)|SPOJ||3|\n|<ul><li>- [ ] Done</li></ul>|8|[Complete Binary Tree](http://www.spoj.com/problems/CBINARYT/)|SPOJ||3|\n|<ul><li>- [ ] Done</li></ul>|9|[Happy Birthday !!!](http://www.spoj.com/problems/HAPPYB/)|SPOJ||4|\n"
  },
  {
    "path": "categories/081. STL/README.md",
    "content": "# 081. STL\n\n\n| Checkbox | ID | Problem Name|Online Judge|Contest|Difficulty Level|\n|:---:|:---:|:---:|:---:|:---:|:---:|\n|<ul><li>- [ ] Done</li></ul>|1|[The Department of Redundancy Department](https://uva.onlinejudge.org/index.php?option=onlinejudge&page=show_problem&problem=425)|UVA||1|\n|<ul><li>- [ ] Done</li></ul>|2|[CD](https://uva.onlinejudge.org/index.php?option=onlinejudge&page=show_problem&problem=565)|UVA||1|\n|<ul><li>- [ ] Done</li></ul>|3|[Babelfish](https://uva.onlinejudge.org/index.php?option=onlinejudge&page=show_problem&problem=1223)|UVA||1|\n|<ul><li>- [ ] Done</li></ul>|4|[Hay Points](https://uva.onlinejudge.org/index.php?option=onlinejudge&page=show_problem&problem=1236)|UVA||1|\n|<ul><li>- [ ] Done</li></ul>|5|[FIGUREFUL](http://www.spoj.com/problems/ACMCEG2B/)|SPOJ||2|\n|<ul><li>- [ ] Done</li></ul>|6|[Pick the candies](http://www.spoj.com/problems/ACMCEG2C/)|SPOJ||3|\n|<ul><li>- [ ] Done</li></ul>|7|[2D-SORT](http://www.spoj.com/problems/SORT2D/)|SPOJ||3|\n|<ul><li>- [ ] Done</li></ul>|8|[HELP NERUBAN](http://www.spoj.com/problems/DOTAA2/)|SPOJ||3|\n|<ul><li>- [ ] Done</li></ul>|9|[STL](http://codeforces.com/problemset/problem/190/C)|Codeforces|Codeforces Round #120 (Div. 2)|5|\n"
  },
  {
    "path": "categories/082. Persistent_Segment_Tree/README.md",
    "content": "# 082. Persistent_Segment_Tree\n\n\n| Checkbox | ID | Problem Name|Online Judge|Contest|Difficulty Level|\n|:---:|:---:|:---:|:---:|:---:|:---:|\n|<ul><li>- [ ] Done</li></ul>|1|[Count on a tree](http://www.spoj.com/problems/COT/)|SPOJ||1|\n|<ul><li>- [ ] Done</li></ul>|2|[K-th Number](http://www.spoj.com/problems/MKTHNUM/)|SPOJ||1|\n|<ul><li>- [ ] Done</li></ul>|3|[D-query](http://www.spoj.com/problems/DQUERY/)|SPOJ||1|\n|<ul><li>- [ ] Done</li></ul>|4|[To the moon](http://www.spoj.com/problems/TTM/)|SPOJ||4|\n|<ul><li>- [ ] Done</li></ul>|5|[Persistent Bookcase ](http://codeforces.com/problemset/problem/707/D)|Codeforces|Codeforces Round #368 (Div. 2)|5|\n|<ul><li>- [ ] Done</li></ul>|6|[Pathwalks](http://codeforces.com/problemset/problem/960/F)|Codeforces|Divide by Zero 2018 and Codeforces Round #474 (Div. 1 + Div. 2, combined)|6|\n|<ul><li>- [ ] Done</li></ul>|7|[Army Creation](http://codeforces.com/problemset/problem/813/E)|Codeforces|Educational Codeforces Round 22|7|\n|<ul><li>- [ ] Done</li></ul>|8|[Till I Collapse](http://codeforces.com/problemset/problem/786/C)|Codeforces|Codeforces Round #406 (Div. 1) & Codeforces Round #406 (Div. 2)|7|\n|<ul><li>- [ ] Done</li></ul>|9|[Functions On The Segments](http://codeforces.com/problemset/problem/837/G)|Codeforces|Educational Codeforces Round 26|9|\n"
  },
  {
    "path": "categories/083. TowerOfHanoi/README.md",
    "content": "# 083. TowerOfHanoi\n\n\n| Checkbox | ID | Problem Name|Online Judge|Year|Contest|Difficulty Level|\n|:---:|:---:|:---:|:---:|:---:|:---:|:---:|\n|<ul><li>- [ ] Done</li></ul>|1|[Tower Parking](https://icpcarchive.ecs.baylor.edu/index.php?option=onlinejudge&page=show_problem&problem=1980)|Live Archive|2007|Europe - Northwestern|1|\n|<ul><li>- [ ] Done</li></ul>|2|[Hanoi Towers](https://icpcarchive.ecs.baylor.edu/index.php?option=onlinejudge&page=show_problem&problem=2051)|Live Archive|2007|Europe - Northeastern|2|\n|<ul><li>- [ ] Done</li></ul>|3|[Strange Towers of Hanoi](http://acm.tju.edu.cn/toj/showp1731.html)|TJU|||3|\n|<ul><li>- [ ] Done</li></ul>|4|[The Never Ending Towers of Hanoi](https://uva.onlinejudge.org/index.php?option=onlinejudge&page=show_problem&problem=958)|UVA|||3|\n|<ul><li>- [ ] Done</li></ul>|5|[Hanoi Factory](http://codeforces.com/problemset/problem/777/E)|Codeforces||Codeforces Round #401 (Div. 2)|5|\n|<ul><li>- [ ] Done</li></ul>|6|[Towers of Hanoi](https://icpcarchive.ecs.baylor.edu/index.php?option=onlinejudge&page=show_problem&problem=409)|Live Archive|2001|North America - Rocky Mountain|5|\n|<ul><li>- [ ] Done</li></ul>|7|[Four-Tower Towers of Hanoi](p?ID=189)|A2 Online Judge|||7|\n|<ul><li>- [ ] Done</li></ul>|8|[Tower of Hanoi](http://codeforces.com/problemset/problem/392/B)|Codeforces||Codeforces Round #230 (Div. 1) & Codeforces Round #230 (Div. 2)|8|\n|<ul><li>- [ ] Done</li></ul>|9|[One Move from Towers of Hanoi](p?ID=188)|A2 Online Judge|||8|\n"
  },
  {
    "path": "categories/084. Sqrt_decomposition/README.md",
    "content": "# 084. Sqrt_decomposition\n\n\n| Checkbox | ID | Problem Name|Online Judge|Year|Contest|Difficulty Level|\n|:---:|:---:|:---:|:---:|:---:|:---:|:---:|\n|<ul><li>- [ ] Done</li></ul>|1|[Horrible Queries](http://www.spoj.com/problems/HORRIBLE/)|SPOJ|||1|\n|<ul><li>- [ ] Done</li></ul>|2|[K-th Number](http://www.spoj.com/problems/MKTHNUM/)|SPOJ|||1|\n|<ul><li>- [ ] Done</li></ul>|3|[Election Posters](http://www.spoj.com/problems/POSTERS/)|SPOJ|||1|\n|<ul><li>- [ ] Done</li></ul>|4|[Interval Product](https://icpcarchive.ecs.baylor.edu/index.php?option=onlinejudge&page=show_problem&problem=4150)|Live Archive|2012|Latin America|1|\n|<ul><li>- [ ] Done</li></ul>|5|[Xenia and Bit Operations](http://codeforces.com/problemset/problem/339/D)|Codeforces||Codeforces Round #197 (Div. 2)|1|\n|<ul><li>- [ ] Done</li></ul>|6|[Maximum Sum](http://www.spoj.com/problems/KGSS/)|SPOJ|||1|\n|<ul><li>- [ ] Done</li></ul>|7|[K-query](http://www.spoj.com/problems/KQUERY/)|SPOJ|||1|\n|<ul><li>- [ ] Done</li></ul>|8|[K-Query Online](http://www.spoj.com/problems/KQUERYO/)|SPOJ|||2|\n|<ul><li>- [ ] Done</li></ul>|9|[K-query II](http://www.spoj.com/problems/KQUERY2/)|SPOJ|||3|\n"
  },
  {
    "path": "categories/085. Numerical_Integration/README.md",
    "content": "# 085. Numerical_Integration\n\n\n| Checkbox | ID | Problem Name|Online Judge|Year|Contest|Difficulty Level|\n|:---:|:---:|:---:|:---:|:---:|:---:|:---:|\n|<ul><li>- [ ] Done</li></ul>|1|[The area of the union of circles](http://www.spoj.com/problems/CIRU/)|SPOJ|||2|\n|<ul><li>- [ ] Done</li></ul>|2|[Bridge](https://icpcarchive.ecs.baylor.edu/index.php?option=onlinejudge&page=show_problem&problem=1486)|Live Archive|2005|Asia - Hangzhou|3|\n|<ul><li>- [ ] Done</li></ul>|3|[Timer](https://icpcarchive.ecs.baylor.edu/index.php?option=onlinejudge&page=show_problem&problem=2331)|Live Archive|2008|Asia - Beijing|4|\n|<ul><li>- [ ] Done</li></ul>|4|[Little Mammoth](http://acm.zju.edu.cn/onlinejudge/showProblem.do?problemCode=2675)|ZOJ|||4|\n|<ul><li>- [ ] Done</li></ul>|5|[GM-pineapple](http://acm.timus.ru/problem.aspx?space=1&num=1562)|Timus|||4|\n|<ul><li>- [ ] Done</li></ul>|6|[Volume](https://icpcarchive.ecs.baylor.edu/index.php?option=onlinejudge&page=show_problem&problem=3097)|Live Archive|2010|Asia - Harbin|5|\n|<ul><li>- [ ] Done</li></ul>|7|[Two Cylinders](http://acm.sgu.ru/problem.php?contest=0&problem=217)|SGU|||5|\n|<ul><li>- [ ] Done</li></ul>|8|[Curvy Little Bottles](https://uva.onlinejudge.org/index.php?option=onlinejudge&page=show_problem&problem=3893)|UVA|||5|\n|<ul><li>- [ ] Done</li></ul>|9|[Environment Protection](https://uva.onlinejudge.org/index.php?option=onlinejudge&page=show_problem&problem=3973)|UVA|||6|\n"
  },
  {
    "path": "categories/086. Articulation_Point/README.md",
    "content": "# 086. Articulation_Point\n\n\n| Checkbox | ID | Problem Name|Online Judge|Year|Contest|Difficulty Level|\n|:---:|:---:|:---:|:---:|:---:|:---:|:---:|\n|<ul><li>- [ ] Done</li></ul>|1|[Building Bridges](https://icpcarchive.ecs.baylor.edu/index.php?option=onlinejudge&page=show_problem&problem=722)|Live Archive|2003|World Finals - Beverly Hills|1|\n|<ul><li>- [ ] Done</li></ul>|2|[Tourist Guide](https://uva.onlinejudge.org/index.php?option=onlinejudge&page=show_problem&problem=1140)|UVA|||1|\n|<ul><li>- [ ] Done</li></ul>|3|[Network](https://uva.onlinejudge.org/index.php?option=onlinejudge&page=show_problem&problem=251)|UVA|||1|\n|<ul><li>- [ ] Done</li></ul>|4|[Network](http://acm.tju.edu.cn/toj/showp1026.html)|TJU|||1|\n|<ul><li>- [ ] Done</li></ul>|5|[Submerging Islands](http://www.spoj.com/problems/SUBMERGE/)|SPOJ|||1|\n|<ul><li>- [ ] Done</li></ul>|6|[VOI 2015 Day 1 - K&#7871; ho&#7841;ch c&#7843;i t&#7893;](http://vn.spoj.com/problems/REFORM/)|SPOJ Vietnam|||3|\n|<ul><li>- [ ] Done</li></ul>|7|[Police Query](http://www.spoj.com/problems/POLQUERY/)|SPOJ|||3|\n|<ul><li>- [ ] Done</li></ul>|8|[Cutting Figure](http://codeforces.com/problemset/problem/193/A)|Codeforces||Codeforces Round #122 (Div. 1) & Codeforces Round #122 (Div. 2)|5|\n"
  },
  {
    "path": "categories/087. Heaps/README.md",
    "content": "# 087. Heaps\n\n\n| Checkbox | ID | Problem Name|Online Judge|Year|Contest|Difficulty Level|\n|:---:|:---:|:---:|:---:|:---:|:---:|:---:|\n|<ul><li>- [ ] Done</li></ul>|1|[Mahesh and his lost array](http://www.codechef.com/problems/ANUMLA)|CodeChef|||1|\n|<ul><li>- [ ] Done</li></ul>|2|[Expedition](http://www.spoj.com/problems/EXPEDI/)|SPOJ|||1|\n|<ul><li>- [ ] Done</li></ul>|3|[Promotion](http://www.spoj.com/problems/PRO/)|SPOJ|||1|\n|<ul><li>- [ ] Done</li></ul>|4|[Restaurant Rating](http://www.codechef.com/problems/RRATING)|CodeChef|||2|\n|<ul><li>- [ ] Done</li></ul>|5|[The lazy programmer](http://www.spoj.com/problems/LAZYPROG/)|SPOJ|||2|\n|<ul><li>- [ ] Done</li></ul>|6|[Sequence Median](http://acm.timus.ru/problem.aspx?space=1&num=1306)|Timus|||2|\n|<ul><li>- [ ] Done</li></ul>|7|[Most Distant Points](http://www.codechef.com/problems/MOSTDIST)|CodeChef|||3|\n|<ul><li>- [ ] Done</li></ul>|8|[Heapsort](https://icpcarchive.ecs.baylor.edu/index.php?option=onlinejudge&page=show_problem&problem=1221)|Live Archive|2004|Europe - Northeastern|5|\n"
  },
  {
    "path": "categories/088. Complete_Searsh/README.md",
    "content": "# 088. Complete_Searsh\n\n\n| Checkbox | ID | Problem Name|Online Judge|Difficulty Level|\n|:---:|:---:|:---:|:---:|:---:|\n|<ul><li>- [ ] Done</li></ul>|1|[Ecological Bin Packing](https://uva.onlinejudge.org/index.php?option=onlinejudge&page=show_problem&problem=38)|UVA|1|\n|<ul><li>- [ ] Done</li></ul>|2|[Expert Enough?](https://uva.onlinejudge.org/index.php?option=onlinejudge&page=show_problem&problem=3678)|UVA|1|\n|<ul><li>- [ ] Done</li></ul>|3|[Recycling](https://uva.onlinejudge.org/index.php?option=onlinejudge&page=show_problem&problem=90)|UVA|1|\n|<ul><li>- [ ] Done</li></ul>|4|[Lotto](https://uva.onlinejudge.org/index.php?option=onlinejudge&page=show_problem&problem=382)|UVA|1|\n|<ul><li>- [ ] Done</li></ul>|5|[Don't Get Rooked](https://uva.onlinejudge.org/index.php?option=onlinejudge&page=show_problem&problem=580)|UVA|1|\n|<ul><li>- [ ] Done</li></ul>|6|[Division](https://uva.onlinejudge.org/index.php?option=onlinejudge&page=show_problem&problem=666)|UVA|1|\n|<ul><li>- [ ] Done</li></ul>|7|[Rat Attack](https://uva.onlinejudge.org/index.php?option=onlinejudge&page=show_problem&problem=1301)|UVA|1|\n|<ul><li>- [ ] Done</li></ul>|8|[The Wedding](https://uva.onlinejudge.org/index.php?option=onlinejudge&page=show_problem&problem=1603)|UVA|3|\n"
  },
  {
    "path": "categories/089. Dijkstra/README.md",
    "content": "# 089. Dijkstra\n\n\n| Checkbox | ID | Problem Name|Online Judge|Year|Contest|Difficulty Level|\n|:---:|:---:|:---:|:---:|:---:|:---:|:---:|\n|<ul><li>- [ ] Done</li></ul>|1|[Dijkstra?](http://codeforces.com/problemset/problem/20/C)|Codeforces||Codeforces Alpha Round #20 (Codeforces format)|1|\n|<ul><li>- [ ] Done</li></ul>|2|[Labyrinth](http://acm.tju.edu.cn/toj/showp1056.html)|TJU|||1|\n|<ul><li>- [ ] Done</li></ul>|3|[The Postal Worker Rings Once](https://uva.onlinejudge.org/index.php?option=onlinejudge&page=show_problem&problem=53)|UVA|||1|\n|<ul><li>- [ ] Done</li></ul>|4|[Distinct Subsequences](http://www.spoj.com/problems/DSUBSEQ/)|SPOJ|||1|\n|<ul><li>- [ ] Done</li></ul>|5|[Tobo or not Tobo](https://icpcarchive.ecs.baylor.edu/index.php?option=onlinejudge&page=show_problem&problem=2362)|Live Archive|2008|Africa/Middle East - Arab and North Africa|2|\n|<ul><li>- [ ] Done</li></ul>|6|[XYZZY](https://uva.onlinejudge.org/index.php?option=onlinejudge&page=show_problem&problem=1498)|UVA|||2|\n|<ul><li>- [ ] Done</li></ul>|7|[Pick up sticks](https://uva.onlinejudge.org/index.php?option=onlinejudge&page=show_problem&problem=2733)|UVA|||2|\n|<ul><li>- [ ] Done</li></ul>|8|[Full Tank?](https://uva.onlinejudge.org/index.php?option=onlinejudge&page=show_problem&problem=2352)|UVA|||3|\n"
  },
  {
    "path": "categories/090. bit_manipulation/README.md",
    "content": "# 090. bit_manipulation\n\n\n| Checkbox | ID | Problem Name|Online Judge|Contest|Difficulty Level|\n|:---:|:---:|:---:|:---:|:---:|:---:|\n|<ul><li>- [ ] Done</li></ul>|1|[Bitmap](http://www.spoj.com/problems/BITMAP/)|SPOJ||1|\n|<ul><li>- [ ] Done</li></ul>|2|[XOR Maximization](http://www.spoj.com/problems/XMAX/)|SPOJ||1|\n|<ul><li>- [ ] Done</li></ul>|3|[Assignments](http://www.spoj.com/problems/ASSIGN/)|SPOJ||1|\n|<ul><li>- [ ] Done</li></ul>|4|[Polo the Penguin and the XOR](http://www.codechef.com/problems/PPXOR)|CodeChef||2|\n|<ul><li>- [ ] Done</li></ul>|5|[Fetching Cooking Tools](http://www.codechef.com/problems/TOOLS)|CodeChef||3|\n|<ul><li>- [ ] Done</li></ul>|6|[A Simple Task](http://codeforces.com/problemset/problem/11/D)|Codeforces|Codeforces Beta Round #11|5|\n|<ul><li>- [ ] Done</li></ul>|7|[Game with Strings](http://codeforces.com/problemset/problem/482/C)|Codeforces|Codeforces Round #275 (Div. 1) & Codeforces Round #275 (Div. 2)|8|\n|<ul><li>- [ ] Done</li></ul>|8|[Design Tutorial: Change the Goal](http://codeforces.com/problemset/problem/472/F)|Codeforces|Codeforces Round #270|9|\n"
  },
  {
    "path": "categories/091. Randomized_Algorithm/README.md",
    "content": "# 091. Randomized_Algorithm\n\n\n| Checkbox | ID | Problem Name|Online Judge|Contest|Difficulty Level|\n|:---:|:---:|:---:|:---:|:---:|:---:|\n|<ul><li>- [ ] Done</li></ul>|1|[Dima and Lisa](http://codeforces.com/problemset/problem/584/D)|Codeforces|Codeforces Round #324 (Div. 2)|2|\n|<ul><li>- [ ] Done</li></ul>|2|[Taxes](http://codeforces.com/problemset/problem/735/D)|Codeforces|Codeforces Round #382 (Div. 2) & Codeforces Round #382 (Div. 1)|2|\n|<ul><li>- [ ] Done</li></ul>|3|[Troublemakers](https://uva.onlinejudge.org/index.php?option=onlinejudge&page=show_problem&problem=1923)|UVA||4|\n|<ul><li>- [ ] Done</li></ul>|4|[Interactive LowerBound](http://codeforces.com/problemset/problem/843/B)|Codeforces|AIM Tech Round 4 (Div. 1) & AIM Tech Round 4 (Div. 2)|5|\n|<ul><li>- [ ] Done</li></ul>|5|[Ghd](http://codeforces.com/problemset/problem/364/D)|Codeforces|Codeforces Round #213 (Div. 1)|8|\n|<ul><li>- [ ] Done</li></ul>|6|[Oranges and Apples](http://codeforces.com/problemset/problem/23/C)|Codeforces|Codeforces Beta Round #23|8|\n|<ul><li>- [ ] Done</li></ul>|7|[Lost Root](http://codeforces.com/problemset/problem/1061/F)|Codeforces|Codeforces Round #523 (Div. 2)|9|\n|<ul><li>- [ ] Done</li></ul>|8|[Digits](http://codeforces.com/problemset/problem/852/A)|Codeforces|Bubble Cup X - Finals [Online Mirror]|9|\n"
  },
  {
    "path": "categories/092. MCM_OBST/README.md",
    "content": "# 092. MCM_OBST\n\n\n| Checkbox | ID | Problem Name|Online Judge|Difficulty Level|\n|:---:|:---:|:---:|:---:|:---:|\n|<ul><li>- [ ] Done</li></ul>|1|[The Knapsack Problem](http://www.spoj.com/problems/KNAPSACK/)|SPOJ|1|\n|<ul><li>- [ ] Done</li></ul>|2|[Optimal Array Multiplication Sequence](https://uva.onlinejudge.org/index.php?option=onlinejudge&page=show_problem&problem=284)|UVA|1|\n|<ul><li>- [ ] Done</li></ul>|3|[Cutting Sticks](https://uva.onlinejudge.org/index.php?option=onlinejudge&page=show_problem&problem=944)|UVA|1|\n|<ul><li>- [ ] Done</li></ul>|4|[Mixtures](http://www.spoj.com/problems/MIXTURES/)|SPOJ|1|\n|<ul><li>- [ ] Done</li></ul>|5|[Optimal Binary Search Tree](https://uva.onlinejudge.org/index.php?option=onlinejudge&page=show_problem&problem=1245)|UVA|2|\n|<ul><li>- [ ] Done</li></ul>|6|[Help the problem setter](http://www.spoj.com/problems/HELP/)|SPOJ|4|\n|<ul><li>- [ ] Done</li></ul>|7|[Huffman´s Greed](http://www.spoj.com/problems/GREEDULM/)|SPOJ|5|\n"
  },
  {
    "path": "categories/093. Simulated_Annealing/README.md",
    "content": "# 093. Simulated_Annealing\n\n\n| Checkbox | ID | Problem Name|Online Judge|Year|Contest|Difficulty Level|\n|:---:|:---:|:---:|:---:|:---:|:---:|:---:|\n|<ul><li>- [ ] Done</li></ul>|1|[A Star not a Tree?](http://poj.org/problem?id=2420)|PKU|||2|\n|<ul><li>- [ ] Done</li></ul>|2|[Run Away](http://poj.org/problem?id=1379)|PKU|||3|\n|<ul><li>- [ ] Done</li></ul>|3|[Super Star](http://poj.org/problem?id=2069)|PKU|||4|\n|<ul><li>- [ ] Done</li></ul>|4|[Studying For Exams](https://icpcarchive.ecs.baylor.edu/index.php?option=onlinejudge&page=show_problem&problem=6048)|Live Archive|2016|North America - Rocky Mountain|6|\n|<ul><li>- [ ] Done</li></ul>|5|[Hongcow Buys a Deck of Cards](http://codeforces.com/problemset/problem/744/C)|Codeforces||Codeforces Round #385 (Div. 1) & Codeforces Round #385 (Div. 2)|7|\n|<ul><li>- [ ] Done</li></ul>|6|[Commentator problem](http://codeforces.com/problemset/problem/2/C)|Codeforces||Codeforces Beta Round #2|7|\n|<ul><li>- [ ] Done</li></ul>|7|[Corridor](http://codeforces.com/problemset/problem/82/E)|Codeforces||Yandex.Algorithm 2011 Qualification 2|9|\n"
  },
  {
    "path": "categories/094. segment_trees/README.md",
    "content": "# 094. segment_trees\n\n\n| Checkbox | ID | Problem Name|Online Judge|Difficulty Level|\n|:---:|:---:|:---:|:---:|:---:|\n|<ul><li>- [ ] Done</li></ul>|1|[Light Switching](http://www.spoj.com/problems/LITE/)|SPOJ|1|\n|<ul><li>- [ ] Done</li></ul>|2|[Can you answer these queries I](http://www.spoj.com/problems/GSS1/)|SPOJ|1|\n|<ul><li>- [ ] Done</li></ul>|3|[Can you answer these queries II](http://www.spoj.com/problems/GSS2/)|SPOJ|1|\n|<ul><li>- [ ] Done</li></ul>|4|[Can you answer these queries III](http://www.spoj.com/problems/GSS3/)|SPOJ|1|\n|<ul><li>- [ ] Done</li></ul>|5|[Maximum Sum](http://www.spoj.com/problems/KGSS/)|SPOJ|1|\n|<ul><li>- [ ] Done</li></ul>|6|[Building Bridges(HARD)](http://www.spoj.com/problems/BRDGHRD/)|SPOJ|3|\n|<ul><li>- [ ] Done</li></ul>|7|[Brackets](http://www.spoj.com/problems/BRKTS/)|SPOJ|3|\n"
  },
  {
    "path": "categories/095. RMQ/README.md",
    "content": "# 095. RMQ\n\n\n| Checkbox | ID | Problem Name|Online Judge|Year|Contest|Difficulty Level|\n|:---:|:---:|:---:|:---:|:---:|:---:|:---:|\n|<ul><li>- [ ] Done</li></ul>|1|[Frequent values](http://www.spoj.com/problems/FREQUENT/)|SPOJ|||1|\n|<ul><li>- [ ] Done</li></ul>|2|[Largest Rectangle in a Histogram](http://www.spoj.com/problems/HISTOGRA/)|SPOJ|||1|\n|<ul><li>- [ ] Done</li></ul>|3|[Query on a tree II](http://www.spoj.com/problems/QTREE2/)|SPOJ|||1|\n|<ul><li>- [ ] Done</li></ul>|4|[Frequent values](http://acm.tju.edu.cn/toj/showp2913.html)|TJU|||2|\n|<ul><li>- [ ] Done</li></ul>|5|[Binary Search Heap Construction](http://www.spoj.com/problems/HEAPULM/)|SPOJ|||3|\n|<ul><li>- [ ] Done</li></ul>|6|[Imperial roads](https://icpcarchive.ecs.baylor.edu/index.php?option=onlinejudge&page=show_problem&problem=6218)|Live Archive|2017|Latin America|5|\n"
  },
  {
    "path": "categories/096. Simulation/README.md",
    "content": "# 096. Simulation\n\n\n| Checkbox | ID | Problem Name|Online Judge|Difficulty Level|\n|:---:|:---:|:---:|:---:|:---:|\n|<ul><li>- [ ] Done</li></ul>|1|[Elevador](http://br.spoj.com/problems/ELEVADO2/)|SPOJ Brazil|1|\n|<ul><li>- [ ] Done</li></ul>|2|[Beggar My Neighbour](https://uva.onlinejudge.org/index.php?option=onlinejudge&page=show_problem&problem=98)|UVA|2|\n|<ul><li>- [ ] Done</li></ul>|3|[Enumerating Rational Numbers](https://uva.onlinejudge.org/index.php?option=onlinejudge&page=show_problem&problem=2302)|UVA|3|\n|<ul><li>- [ ] Done</li></ul>|4|[Corrida](http://br.spoj.com/problems/CORRID11/)|SPOJ Brazil|3|\n|<ul><li>- [ ] Done</li></ul>|5|[Volume da TV](http://br.spoj.com/problems/VOLUME13/)|SPOJ Brazil|4|\n|<ul><li>- [ ] Done</li></ul>|6|[Use of Hospital Facilities](http://www.spoj.com/problems/HOSPITAL/)|SPOJ|6|\n"
  },
  {
    "path": "categories/097. Bellman-Ford/README.md",
    "content": "# 097. Bellman-Ford\n\n\n| Checkbox | ID | Problem Name|Online Judge|Difficulty Level|\n|:---:|:---:|:---:|:---:|:---:|\n|<ul><li>- [ ] Done</li></ul>|1|[Wormholes](https://uva.onlinejudge.org/index.php?option=onlinejudge&page=show_problem&problem=499)|UVA|1|\n|<ul><li>- [ ] Done</li></ul>|2|[XYZZY](https://uva.onlinejudge.org/index.php?option=onlinejudge&page=show_problem&problem=1498)|UVA|2|\n|<ul><li>- [ ] Done</li></ul>|3|[Traffic](https://uva.onlinejudge.org/index.php?option=onlinejudge&page=show_problem&problem=1390)|UVA|3|\n|<ul><li>- [ ] Done</li></ul>|4|[King](https://uva.onlinejudge.org/index.php?option=onlinejudge&page=show_problem&problem=456)|UVA|3|\n|<ul><li>- [ ] Done</li></ul>|5|[Flying to Fredericton](https://uva.onlinejudge.org/index.php?option=onlinejudge&page=show_problem&problem=2255)|UVA|3|\n|<ul><li>- [ ] Done</li></ul>|6|[Instant View of Big Bang](https://uva.onlinejudge.org/index.php?option=onlinejudge&page=show_problem&problem=2768)|UVA|4|\n"
  },
  {
    "path": "categories/098. big_numbers/README.md",
    "content": "# 098. big_numbers\n\n\n| Checkbox | ID | Problem Name|Online Judge|Difficulty Level|\n|:---:|:---:|:---:|:---:|:---:|\n|<ul><li>- [ ] Done</li></ul>|1|[Small factorials](http://www.spoj.com/problems/FCTRL2/)|SPOJ|1|\n|<ul><li>- [ ] Done</li></ul>|2|[Julka](http://www.spoj.com/problems/JULKA/)|SPOJ|1|\n|<ul><li>- [ ] Done</li></ul>|3|[X&#7917; lý s&#7889; nguy&#234;n l&#7899;n](http://vn.spoj.com/problems/BIGNUM/)|SPOJ Vietnam|1|\n|<ul><li>- [ ] Done</li></ul>|4|[Minimum Number](http://www.spoj.com/problems/MINNUM/)|SPOJ|2|\n|<ul><li>- [ ] Done</li></ul>|5|[Recurrence](http://www.spoj.com/problems/REC/)|SPOJ|3|\n|<ul><li>- [ ] Done</li></ul>|6|[Binary multiplication](http://www.spoj.com/problems/MUL2COM/)|SPOJ|3|\n"
  },
  {
    "path": "categories/099. digit_dp/README.md",
    "content": "# 099. digit_dp\n\n\n| Checkbox | ID | Problem Name|Online Judge|Contest|Difficulty Level|\n|:---:|:---:|:---:|:---:|:---:|:---:|\n|<ul><li>- [ ] Done</li></ul>|1|[LUCIFER Number](http://www.spoj.com/problems/LUCIFER/)|SPOJ||2|\n|<ul><li>- [ ] Done</li></ul>|2|[G-One Numbers](http://www.spoj.com/problems/GONE/)|SPOJ||2|\n|<ul><li>- [ ] Done</li></ul>|3|[Ra-One Numbers](http://www.spoj.com/problems/RAONE/)|SPOJ||2|\n|<ul><li>- [ ] Done</li></ul>|4|[Magic Numbers](http://codeforces.com/problemset/problem/628/D)|Codeforces|Educational Codeforces Round 8|6|\n|<ul><li>- [ ] Done</li></ul>|5|[Salazar Slytherin's Locket](http://codeforces.com/problemset/problem/855/E)|Codeforces|Manthan, Codefest 17|7|\n|<ul><li>- [ ] Done</li></ul>|6|[Igor and Interesting Numbers](http://codeforces.com/problemset/problem/747/F)|Codeforces|Codeforces Round #387 (Div. 2)|9|\n"
  },
  {
    "path": "categories/100. chinese_remainder_theorem/README.md",
    "content": "# 100. chinese_remainder_theorem\n\n\n| Checkbox | ID | Problem Name|Online Judge|Contest|Difficulty Level|\n|:---:|:---:|:---:|:---:|:---:|:---:|\n|<ul><li>- [ ] Done</li></ul>|1|[Buns](http://codeforces.com/problemset/problem/106/C)|Codeforces|Codeforces Beta Round #82 (Div. 2)|4|\n|<ul><li>- [ ] Done</li></ul>|2|[Remainders Game](http://codeforces.com/problemset/problem/687/B)|Codeforces|Codeforces Round #360 (Div. 1) & Codeforces Round #360 (Div. 2)|4|\n|<ul><li>- [ ] Done</li></ul>|3|[Cutting Figure](http://codeforces.com/problemset/problem/193/A)|Codeforces|Codeforces Round #122 (Div. 1) & Codeforces Round #122 (Div. 2)|5|\n|<ul><li>- [ ] Done</li></ul>|4|[GCD Table](http://codeforces.com/problemset/problem/338/D)|Codeforces|Codeforces Round #196 (Div. 1)|8|\n|<ul><li>- [ ] Done</li></ul>|5|[Little Elephant and Triangle](http://codeforces.com/problemset/problem/220/D)|Codeforces|Codeforces Round #136 (Div. 1)|9|\n|<ul><li>- [ ] Done</li></ul>|6|[Nephren Runs a Cinema](http://codeforces.com/problemset/problem/896/D)|Codeforces|Codeforces Round #449 (Div. 1)|10|\n"
  },
  {
    "path": "categories/101. 0_1_BFS/README.md",
    "content": "# 101. 0_1_BFS\n\n\n| Checkbox | ID | Problem Name|Online Judge|Contest|Difficulty Level|\n|:---:|:---:|:---:|:---:|:---:|:---:|\n|<ul><li>- [ ] Done</li></ul>|1|[KATHTHI](http://www.spoj.com/problems/KATHTHI/)|SPOJ||2|\n|<ul><li>- [ ] Done</li></ul>|2|[Ocean Currents](https://uva.onlinejudge.org/index.php?option=onlinejudge&page=show_problem&problem=2620)|UVA||4|\n|<ul><li>- [ ] Done</li></ul>|3|[Three States](http://codeforces.com/problemset/problem/590/C)|Codeforces|Codeforces Round #327 (Div. 1) & Codeforces Round #327 (Div. 2)|5|\n|<ul><li>- [ ] Done</li></ul>|4|[Olya and Energy Drinks](http://codeforces.com/problemset/problem/877/D)|Codeforces|Codeforces Round #442 (Div. 2)|5|\n|<ul><li>- [ ] Done</li></ul>|5|[Chamber of Secrets](http://codeforces.com/problemset/problem/173/B)|Codeforces|Croc Champ 2012 - Round 1|6|\n|<ul><li>- [ ] Done</li></ul>|6|[Error](p?ID=28)|A2 Online Judge||7|\n"
  },
  {
    "path": "categories/102. Square_Root_Decomposition/README.md",
    "content": "# 102. Square_Root_Decomposition\n\n\n| Checkbox | ID | Problem Name|Online Judge|Contest|Difficulty Level|\n|:---:|:---:|:---:|:---:|:---:|:---:|\n|<ul><li>- [ ] Done</li></ul>|1|[Potentiometers](https://uva.onlinejudge.org/index.php?option=onlinejudge&page=show_problem&problem=3238)|UVA||2|\n|<ul><li>- [ ] Done</li></ul>|2|[Race Against Time](http://www.spoj.com/problems/RACETIME/)|SPOJ||2|\n|<ul><li>- [ ] Done</li></ul>|3|[K-query II](http://www.spoj.com/problems/KQUERY2/)|SPOJ||3|\n|<ul><li>- [ ] Done</li></ul>|4|[Array Transformer](https://uva.onlinejudge.org/index.php?option=onlinejudge&page=show_problem&problem=3154)|UVA||4|\n|<ul><li>- [ ] Done</li></ul>|5|[DZY Loves Fibonacci Numbers](http://codeforces.com/problemset/problem/446/C)|Codeforces|Codeforces Round #255 (Div. 1) & Codeforces Round #255 (Div. 2)|6|\n|<ul><li>- [ ] Done</li></ul>|6|[Lucky Array](http://codeforces.com/problemset/problem/121/E)|Codeforces|Codeforces Beta Round #91 (Div. 1 Only)|7|\n"
  },
  {
    "path": "categories/103. BinarySearchVariants/README.md",
    "content": "# 103. BinarySearchVariants\n\n\n| Checkbox | ID | Problem Name|Online Judge|Contest|Difficulty Level|\n|:---:|:---:|:---:|:---:|:---:|:---:|\n|<ul><li>- [ ] Done</li></ul>|1|[AgeEncoding](http://community.topcoder.com/stat?c=problem_statement&pm=10589)|TopCoder|SRM 462 - Div1 easy - Div2 medium] (14147)|4|\n|<ul><li>- [ ] Done</li></ul>|2|[ImprovingStatistics](http://community.topcoder.com/stat?c=problem_statement&pm=7386)|TopCoder|SRM 338 - Div1 easy - Div2 medium] (10662)|4|\n|<ul><li>- [ ] Done</li></ul>|3|[LogCutter](http://community.topcoder.com/stat?c=problem_statement&pm=5955)|TopCoder|SRM 329 - Div1 medium] (10009)|5|\n|<ul><li>- [ ] Done</li></ul>|4|[ModularInequality](http://community.topcoder.com/stat?c=problem_statement&pm=6765)|TopCoder|SRM 325 - Div1 medium - Div2 hard] (10005)|6|\n|<ul><li>- [ ] Done</li></ul>|5|[StrawberryFieldsOnFire](http://community.topcoder.com/stat?c=problem_statement&pm=6646)|TopCoder|SRM 322 - Div1 hard] (10002)|9|\n|<ul><li>- [ ] Done</li></ul>|6|[RPSTournament](http://community.topcoder.com/stat?c=problem_statement&pm=6539)|TopCoder|SRM 339 - Div1 hard] (10663)|9|\n"
  },
  {
    "path": "categories/104. Rabin-Karp/README.md",
    "content": "# 104. Rabin-Karp\n\n\n| Checkbox | ID | Problem Name|Online Judge|Difficulty Level|\n|:---:|:---:|:---:|:---:|:---:|\n|<ul><li>- [ ] Done</li></ul>|1|[Extend to Palindrome](http://www.spoj.com/problems/EPALIN/)|SPOJ|1|\n|<ul><li>- [ ] Done</li></ul>|2|[Palindromes](http://www.spoj.com/problems/PLD/)|SPOJ|1|\n|<ul><li>- [ ] Done</li></ul>|3|[Ada and Spring Cleaning](http://www.spoj.com/problems/ADACLEAN/)|SPOJ|3|\n|<ul><li>- [ ] Done</li></ul>|4|[Hacking](http://www.spoj.com/problems/HACKING/)|SPOJ|4|\n|<ul><li>- [ ] Done</li></ul>|5|[Easy Longest Common Substring](http://www.spoj.com/problems/ELCS/)|SPOJ|4|\n"
  },
  {
    "path": "categories/105. kth_shortest_path/README.md",
    "content": "# 105. kth_shortest_path\n\n\n| Checkbox | ID | Problem Name|Online Judge|Difficulty Level|\n|:---:|:---:|:---:|:---:|:---:|\n|<ul><li>- [ ] Done</li></ul>|1|[Dijkstra, Dijkstra.](https://uva.onlinejudge.org/index.php?option=onlinejudge&page=show_problem&problem=1747)|UVA|2|\n|<ul><li>- [ ] Done</li></ul>|2|[Connections](http://www.spoj.com/problems/CONNECT/)|SPOJ|4|\n|<ul><li>- [ ] Done</li></ul>|3|[Not the Best](https://uva.onlinejudge.org/index.php?option=onlinejudge&page=show_problem&problem=1681)|UVA|4|\n|<ul><li>- [ ] Done</li></ul>|4|[Always Late](https://uva.onlinejudge.org/index.php?option=onlinejudge&page=show_problem&problem=1283)|UVA|4|\n|<ul><li>- [ ] Done</li></ul>|5|[Kth Shortest Path](http://www.spoj.com/problems/MKTHPATH/)|SPOJ|8|\n"
  },
  {
    "path": "categories/106. Optimization/README.md",
    "content": "# 106. Optimization\n\n\n| Checkbox | ID | Problem Name|Online Judge|Difficulty Level|\n|:---:|:---:|:---:|:---:|:---:|\n|<ul><li>- [ ] Done</li></ul>|1|[PATHS](http://www.spoj.com/problems/WAYS/)|SPOJ|2|\n|<ul><li>- [ ] Done</li></ul>|2|[AVERYEASYPROBLEM](http://www.spoj.com/problems/PROBLEM6/)|SPOJ|5|\n|<ul><li>- [ ] Done</li></ul>|3|[Number of digits](http://www.spoj.com/problems/DIGITCNT/)|SPOJ|6|\n|<ul><li>- [ ] Done</li></ul>|4|[BF_MODULUS](http://www.spoj.com/problems/MODULUS2/)|SPOJ|9|\n|<ul><li>- [ ] Done</li></ul>|5|[JAVA COUNTING](http://www.spoj.com/problems/QWERTY03/)|SPOJ|9|\n"
  },
  {
    "path": "categories/107. Game_Theory/README.md",
    "content": "# 107. Game_Theory\n\n\n| Checkbox | ID | Problem Name|Online Judge|Difficulty Level|\n|:---:|:---:|:---:|:---:|:---:|\n|<ul><li>- [ ] Done</li></ul>|1|[Matrix Game](http://www.spoj.com/problems/MATGAME/)|SPOJ|2|\n|<ul><li>- [ ] Done</li></ul>|2|[TRIVIADOR](http://www.spoj.com/problems/TWOKINGS/)|SPOJ|3|\n|<ul><li>- [ ] Done</li></ul>|3|[TRIVIADOR](http://www.spoj.com/problems/QWERTY04/)|SPOJ|5|\n|<ul><li>- [ ] Done</li></ul>|4|[TWO KINGS](http://www.spoj.com/problems/CONQUER/)|SPOJ|9|\n|<ul><li>- [ ] Done</li></ul>|5|[THE WITTY BOY](http://www.spoj.com/problems/WITTYBOY/)|SPOJ|10|\n"
  },
  {
    "path": "categories/108. Recursion/README.md",
    "content": "# 108. Recursion\n\n\n| Checkbox | ID | Problem Name|Online Judge|Contest|Difficulty Level|\n|:---:|:---:|:---:|:---:|:---:|:---:|\n|<ul><li>- [ ] Done</li></ul>|1|[I'm bored with life](http://codeforces.com/problemset/problem/822/A)|Codeforces|Codeforces Round #422 (Div. 2)|1|\n|<ul><li>- [ ] Done</li></ul>|2|[Fibonacci Array](https://www.urionlinejudge.com.br/judge/en/problems/view/1176)|URI||1|\n|<ul><li>- [ ] Done</li></ul>|3|[Hello Recursion](http://www.spoj.com/problems/HRECURS/)|SPOJ||2|\n|<ul><li>- [ ] Done</li></ul>|4|[THE WEIRD STAIRCASE](http://www.spoj.com/problems/STAR3CAS/)|SPOJ||3|\n|<ul><li>- [ ] Done</li></ul>|5|[PICK UP DROP ESCAPE](http://www.spoj.com/problems/CODEIT02/)|SPOJ||3|\n"
  },
  {
    "path": "categories/109. Treap/README.md",
    "content": "# 109. Treap\n\n\n| Checkbox | ID | Problem Name|Online Judge|Difficulty Level|\n|:---:|:---:|:---:|:---:|:---:|\n|<ul><li>- [ ] Done</li></ul>|1|[Order statistic set](http://www.spoj.com/problems/ORDERSET/)|SPOJ|1|\n|<ul><li>- [ ] Done</li></ul>|2|[Can you answer these queries VI](http://www.spoj.com/problems/GSS6/)|SPOJ|2|\n|<ul><li>- [ ] Done</li></ul>|3|[Matrix](http://www.spoj.com/problems/KPMATRIX/)|SPOJ|2|\n|<ul><li>- [ ] Done</li></ul>|4|[Robotic Sort](http://www.spoj.com/problems/CERC07S/)|SPOJ|3|\n|<ul><li>- [ ] Done</li></ul>|5|[Genetics](http://www.codechef.com/problems/GENETICS)|CodeChef|5|\n"
  },
  {
    "path": "categories/110. matrix_exponentiation/README.md",
    "content": "# 110. matrix_exponentiation\n\n\n| Checkbox | ID | Problem Name|Online Judge|Contest|Difficulty Level|\n|:---:|:---:|:---:|:---:|:---:|:---:|\n|<ul><li>- [ ] Done</li></ul>|1|[Yet another Number Sequence](https://uva.onlinejudge.org/index.php?option=onlinejudge&page=show_problem&problem=1630)|UVA||2|\n|<ul><li>- [ ] Done</li></ul>|2|[Sum of products](http://www.spoj.com/problems/SUMMUL/)|SPOJ||3|\n|<ul><li>- [ ] Done</li></ul>|3|[Plant](http://codeforces.com/problemset/problem/185/A)|Codeforces|Codeforces Round #118 (Div. 1) & Codeforces Round #118 (Div. 2)|3|\n|<ul><li>- [ ] Done</li></ul>|4|[Blocks for kids](http://www.spoj.com/problems/PBOARD/)|SPOJ||5|\n|<ul><li>- [ ] Done</li></ul>|5|[Decoding Genome](http://codeforces.com/problemset/problem/222/E)|Codeforces|Codeforces Round #137 (Div. 2)|6|\n"
  },
  {
    "path": "categories/111. Minimum_Spanning_Tree/README.md",
    "content": "# 111. Minimum_Spanning_Tree\n\n\n| Checkbox | ID | Problem Name|Online Judge|Contest|Difficulty Level|\n|:---:|:---:|:---:|:---:|:---:|:---:|\n|<ul><li>- [ ] Done</li></ul>|1|[Lazy Student](http://codeforces.com/problemset/problem/605/B)|Codeforces|Codeforces Round #335 (Div. 1) & Codeforces Round #335 (Div. 2)|4|\n|<ul><li>- [ ] Done</li></ul>|2|[The Child and Zoo](http://codeforces.com/problemset/problem/437/D)|Codeforces|Codeforces Round #250 (Div. 2) & Codeforces Round #250 (Div. 1)|4|\n|<ul><li>- [ ] Done</li></ul>|3|[Minimum spanning tree for each edge](http://codeforces.com/problemset/problem/609/E)|Codeforces|Educational Codeforces Round 3|5|\n|<ul><li>- [ ] Done</li></ul>|4|[Hamiltonian Spanning Tree](http://codeforces.com/problemset/problem/618/D)|Codeforces|Wunder Fund Round 2016 (Div. 1 + Div. 2 combined)|6|\n|<ul><li>- [ ] Done</li></ul>|5|[Edges in MST](http://codeforces.com/problemset/problem/160/D)|Codeforces|Codeforces Round #111 (Div. 2)|7|\n"
  },
  {
    "path": "categories/112. 2D_Range_Queries/README.md",
    "content": "# 112. 2D_Range_Queries\n\n\n| Checkbox | ID | Problem Name|Online Judge|Contest|Difficulty Level|\n|:---:|:---:|:---:|:---:|:---:|:---:|\n|<ul><li>- [ ] Done</li></ul>|1|[Anton and Permutation](http://codeforces.com/problemset/problem/785/E)|Codeforces|Codeforces Round #404 (Div. 2)|7|\n|<ul><li>- [ ] Done</li></ul>|2|[The Untended Antiquity](http://codeforces.com/problemset/problem/869/E)|Codeforces|Codeforces Round #439 (Div. 2)|7|\n|<ul><li>- [ ] Done</li></ul>|3|[Iahub and Xors](http://codeforces.com/problemset/problem/341/D)|Codeforces|Codeforces Round #198 (Div. 1)|7|\n|<ul><li>- [ ] Done</li></ul>|4|[Subtree Minimum Query](http://codeforces.com/problemset/problem/893/F)|Codeforces|Educational Codeforces Round 33 (Rated for Div. 2)|8|\n|<ul><li>- [ ] Done</li></ul>|5|[Andryusha and Nervous Barriers](http://codeforces.com/problemset/problem/780/G)|Codeforces|?????????? 2017 - ????? (?????? ??? ??????-??????????)|9|\n"
  },
  {
    "path": "categories/113. Minimum_Cost_Flow/README.md",
    "content": "# 113. Minimum_Cost_Flow\n\n\n| Checkbox | ID | Problem Name|Online Judge|Contest|Difficulty Level|\n|:---:|:---:|:---:|:---:|:---:|:---:|\n|<ul><li>- [ ] Done</li></ul>|1|[Acme Corporation](https://uva.onlinejudge.org/index.php?option=onlinejudge&page=show_problem&problem=2660)|UVA||5|\n|<ul><li>- [ ] Done</li></ul>|2|[Students Initiation](http://codeforces.com/problemset/problem/847/J)|Codeforces|2017-2018 ACM-ICPC, NEERC, Southern Subregional Contest, qualification stage (Online Mirror, ACM-ICPC Rules, Teams Preferred)|8|\n|<ul><li>- [ ] Done</li></ul>|3|[Almost Permutation](http://codeforces.com/problemset/problem/863/F)|Codeforces|Educational Codeforces Round 29|8|\n|<ul><li>- [ ] Done</li></ul>|4|[Machine Programming](http://codeforces.com/problemset/problem/164/C)|Codeforces|VK Cup 2012 Round 3|8|\n|<ul><li>- [ ] Done</li></ul>|5|[Four Melodies](http://codeforces.com/problemset/problem/818/G)|Codeforces|Educational Codeforces Round 24|9|\n"
  },
  {
    "path": "categories/114. ETF/README.md",
    "content": "# 114. ETF\n\n\n| Checkbox | ID | Problem Name|Online Judge|Difficulty Level|\n|:---:|:---:|:---:|:---:|:---:|\n|<ul><li>- [ ] Done</li></ul>|1|[Totient Extreme](http://www.spoj.com/problems/DCEPCA03/)|SPOJ|1|\n|<ul><li>- [ ] Done</li></ul>|2|[Euler Totient Function](http://www.spoj.com/problems/ETF/)|SPOJ|1|\n|<ul><li>- [ ] Done</li></ul>|3|[Euler Totient Function Sieve](http://www.spoj.com/problems/ETFS/)|SPOJ|3|\n|<ul><li>- [ ] Done</li></ul>|4|[Smallest Inverse Euler Totient Function](http://www.spoj.com/problems/INVPHI/)|SPOJ|5|\n|<ul><li>- [ ] Done</li></ul>|5|[Totient in permutation (easy)](http://www.spoj.com/problems/TIP1/)|SPOJ|5|\n"
  },
  {
    "path": "categories/115. Partitioning/README.md",
    "content": "# 115. Partitioning\n\n\n| Checkbox | ID | Problem Name|Online Judge|Difficulty Level|\n|:---:|:---:|:---:|:---:|:---:|\n|<ul><li>- [ ] Done</li></ul>|1|[SAM I AM](https://uva.onlinejudge.org/index.php?option=onlinejudge&page=show_problem&problem=2414)|UVA|3|\n|<ul><li>- [ ] Done</li></ul>|2|[Star Wars](http://www.spoj.com/problems/GCJ08C/)|SPOJ|5|\n|<ul><li>- [ ] Done</li></ul>|3|[Electric Fences](http://www.spoj.com/problems/FENCE3/)|SPOJ|6|\n|<ul><li>- [ ] Done</li></ul>|4|[Texas Trip](http://www.spoj.com/problems/WLOO0707/)|SPOJ|6|\n"
  },
  {
    "path": "categories/116. Grid_compression/README.md",
    "content": "# 116. Grid_compression\n\n\n| Checkbox | ID | Problem Name|Online Judge|Year|Contest|Difficulty Level|\n|:---:|:---:|:---:|:---:|:---:|:---:|:---:|\n|<ul><li>- [ ] Done</li></ul>|1|[Tracking Bio-bots](https://icpcarchive.ecs.baylor.edu/index.php?option=onlinejudge&page=show_problem&problem=2788)|Live Archive|2010|World Finals - Harbin|1|\n|<ul><li>- [ ] Done</li></ul>|2|[Crossing Streets](https://icpcarchive.ecs.baylor.edu/index.php?option=onlinejudge&page=show_problem&problem=1275)|Live Archive|2005|World Finals - Shanghai|1|\n|<ul><li>- [ ] Done</li></ul>|3|[Tin Cutter](http://www.spoj.com/problems/TCUTTER/)|SPOJ|||4|\n|<ul><li>- [ ] Done</li></ul>|4|[Bulb Inside a Grid](https://uva.onlinejudge.org/index.php?option=onlinejudge&page=show_problem&problem=2638)|UVA|||7|\n"
  },
  {
    "path": "categories/117. schedules/README.md",
    "content": "# 117. schedules\n\n\n| Checkbox | ID | Problem Name|Online Judge|Contest|Difficulty Level|\n|:---:|:---:|:---:|:---:|:---:|:---:|\n|<ul><li>- [ ] Done</li></ul>|1|[Inna and New Matrix of Candies](http://codeforces.com/problemset/problem/400/B)|Codeforces|Codeforces Round #234 (Div. 2)|3|\n|<ul><li>- [ ] Done</li></ul>|2|[Sereja and Brackets](http://codeforces.com/problemset/problem/380/C)|Codeforces|Codeforces Round #223 (Div. 1) & Codeforces Round #223 (Div. 2)|3|\n|<ul><li>- [ ] Done</li></ul>|3|[Rock-paper-scissors](http://codeforces.com/problemset/problem/48/A)|Codeforces|School Personal Contest #3 (Winter Computer School 2010/11) - Codeforces Beta Round #45 (ACM-ICPC Rules)|5|\n|<ul><li>- [ ] Done</li></ul>|4|[New Year Tree Decorations](http://codeforces.com/problemset/problem/379/E)|Codeforces|Good Bye 2013|9|\n"
  },
  {
    "path": "categories/118. AI/README.md",
    "content": "# 118. AI\n\n\n| Checkbox | ID | Problem Name|Online Judge|Difficulty Level|\n|:---:|:---:|:---:|:---:|:---:|\n|<ul><li>- [ ] Done</li></ul>|1|[TRIVIADOR](http://www.spoj.com/problems/TWOKINGS/)|SPOJ|3|\n|<ul><li>- [ ] Done</li></ul>|2|[TRIVIADOR](http://www.spoj.com/problems/QWERTY04/)|SPOJ|5|\n|<ul><li>- [ ] Done</li></ul>|3|[TWO KINGS](http://www.spoj.com/problems/CONQUER/)|SPOJ|9|\n|<ul><li>- [ ] Done</li></ul>|4|[THE WITTY BOY](http://www.spoj.com/problems/WITTYBOY/)|SPOJ|10|\n"
  },
  {
    "path": "categories/119. tries/README.md",
    "content": "# 119. tries\n\n\n| Checkbox | ID | Problem Name|Online Judge|Contest|Difficulty Level|\n|:---:|:---:|:---:|:---:|:---:|:---:|\n|<ul><li>- [ ] Done</li></ul>|1|[Hardwood Species](https://uva.onlinejudge.org/index.php?option=onlinejudge&page=show_problem&problem=1167)|UVA||1|\n|<ul><li>- [ ] Done</li></ul>|2|[Phone List](https://uva.onlinejudge.org/index.php?option=onlinejudge&page=show_problem&problem=2347)|UVA||1|\n|<ul><li>- [ ] Done</li></ul>|3|[Hyper Prefix Sets](https://uva.onlinejudge.org/index.php?option=onlinejudge&page=show_problem&problem=2483)|UVA||3|\n|<ul><li>- [ ] Done</li></ul>|4|[Vasiliy's Multiset](http://codeforces.com/problemset/problem/706/D)|Codeforces|Codeforces Round #367 (Div. 2)|3|\n"
  },
  {
    "path": "categories/120. Graph_basics_concepts_BFS_DFS/README.md",
    "content": "# 120. Graph_basics_concepts_BFS_DFS\n\n\n| Checkbox | ID | Problem Name|Online Judge|Year|Contest|Difficulty Level|\n|:---:|:---:|:---:|:---:|:---:|:---:|:---:|\n|<ul><li>- [ ] Done</li></ul>|1|[Tri graphs](https://icpcarchive.ecs.baylor.edu/index.php?option=onlinejudge&page=show_problem&problem=2968)|Live Archive|2010|Africa/Middle East - Arab Contest|1|\n|<ul><li>- [ ] Done</li></ul>|2|[Phone List](http://www.spoj.com/problems/PHONELST/)|SPOJ|||1|\n|<ul><li>- [ ] Done</li></ul>|3|[Vito's Family](https://icpcarchive.ecs.baylor.edu/index.php?option=onlinejudge&page=show_problem&problem=203)|Live Archive|2000|Europe - Northwestern & Europe - Southwestern|1|\n|<ul><li>- [ ] Done</li></ul>|4|[Intrepid climber](https://uva.onlinejudge.org/index.php?option=onlinejudge&page=show_problem&problem=4727)|UVA|||5|\n"
  },
  {
    "path": "categories/121. Kadane's_Algorithm/README.md",
    "content": "# 121. Kadane's_Algorithm\n\n\n| Checkbox | ID | Problem Name|Online Judge|Difficulty Level|\n|:---:|:---:|:---:|:---:|:---:|\n|<ul><li>- [ ] Done</li></ul>|1|[Maximum Sum](http://acm.timus.ru/problem.aspx?space=1&num=1146)|Timus|1|\n|<ul><li>- [ ] Done</li></ul>|2|[The jackpot](https://uva.onlinejudge.org/index.php?option=onlinejudge&page=show_problem&problem=1625)|UVA|1|\n|<ul><li>- [ ] Done</li></ul>|3|[Jill Rides Again](https://uva.onlinejudge.org/index.php?option=onlinejudge&page=show_problem&problem=448)|UVA|1|\n|<ul><li>- [ ] Done</li></ul>|4|[Maximum Sub-sequence Product](https://uva.onlinejudge.org/index.php?option=onlinejudge&page=show_problem&problem=728)|UVA|2|\n"
  },
  {
    "path": "categories/122. Range_tree/README.md",
    "content": "# 122. Range_tree\n\n\n| Checkbox | ID | Problem Name|Online Judge|Difficulty Level|\n|:---:|:---:|:---:|:---:|:---:|\n|<ul><li>- [ ] Done</li></ul>|1|[Zig-Zag rabbit](http://www.spoj.com/problems/ZIGZAG/)|SPOJ|2|\n|<ul><li>- [ ] Done</li></ul>|2|[Frequent values](http://acm.tju.edu.cn/toj/showp2913.html)|TJU|2|\n|<ul><li>- [ ] Done</li></ul>|3|[Shortcut](http://www.spoj.com/problems/SHORTCUT/)|SPOJ|3|\n"
  },
  {
    "path": "categories/123. Newton_Raphson_method/README.md",
    "content": "# 123. Newton_Raphson_method\n\n\n| Checkbox | ID | Problem Name|Online Judge|Difficulty Level|\n|:---:|:---:|:---:|:---:|:---:|\n|<ul><li>- [ ] Done</li></ul>|1|[Easy Calculation](http://www.spoj.com/problems/TRIGALGE/)|SPOJ|1|\n|<ul><li>- [ ] Done</li></ul>|2|[Square Root](http://www.spoj.com/problems/SQRROOT/)|SPOJ|2|\n|<ul><li>- [ ] Done</li></ul>|3|[Cube Root](http://www.spoj.com/problems/CUBERT/)|SPOJ|3|\n"
  },
  {
    "path": "categories/124. Float_precision/README.md",
    "content": "# 124. Float_precision\n\n\n| Checkbox | ID | Problem Name|Online Judge|Difficulty Level|\n|:---:|:---:|:---:|:---:|:---:|\n|<ul><li>- [ ] Done</li></ul>|1|[GRADE POINT AVERAGE](http://www.spoj.com/problems/GPA1/)|SPOJ|2|\n|<ul><li>- [ ] Done</li></ul>|2|[IPL - CRICKET TOURNAMENT](http://www.spoj.com/problems/IPL1/)|SPOJ|5|\n|<ul><li>- [ ] Done</li></ul>|3|[CUBE ROOT](http://www.spoj.com/problems/CUBEROO2/)|SPOJ|6|\n"
  },
  {
    "path": "categories/125. Difference_Constraints/README.md",
    "content": "# 125. Difference_Constraints\n\n\n| Checkbox | ID | Problem Name|Online Judge|Year|Contest|Difficulty Level|\n|:---:|:---:|:---:|:---:|:---:|:---:|:---:|\n|<ul><li>- [ ] Done</li></ul>|1|[King](https://uva.onlinejudge.org/index.php?option=onlinejudge&page=show_problem&problem=456)|UVA|||3|\n|<ul><li>- [ ] Done</li></ul>|2|[Task](https://icpcarchive.ecs.baylor.edu/index.php?option=onlinejudge&page=show_problem&problem=2886)|Live Archive|2010|North America - Rocky Mountain|3|\n|<ul><li>- [ ] Done</li></ul>|3|[Spring Loaded](http://www.spoj.com/problems/SPRING/)|SPOJ|||4|\n"
  },
  {
    "path": "categories/126. flood_fill/README.md",
    "content": "# 126. flood_fill\n\n\n| Checkbox | ID | Problem Name|Online Judge|Difficulty Level|\n|:---:|:---:|:---:|:---:|:---:|\n|<ul><li>- [ ] Done</li></ul>|1|[Labyrinth](http://acm.timus.ru/problem.aspx?space=1&num=1033)|Timus|1|\n|<ul><li>- [ ] Done</li></ul>|2|[Contamination](https://www.urionlinejudge.com.br/judge/en/problems/view/1583)|URI|3|\n|<ul><li>- [ ] Done</li></ul>|3|[Batalha naval](http://br.spoj.com/problems/BATALHA2/)|SPOJ Brazil|5|\n"
  },
  {
    "path": "categories/127. binary_search/README.md",
    "content": "# 127. binary_search\n\n\n| Checkbox | ID | Problem Name|Online Judge|Difficulty Level|\n|:---:|:---:|:---:|:---:|:---:|\n|<ul><li>- [ ] Done</li></ul>|1|[The Stern-Brocot Number System](https://uva.onlinejudge.org/index.php?option=onlinejudge&page=show_problem&problem=1018)|UVA|1|\n|<ul><li>- [ ] Done</li></ul>|2|[Enumerating Rational Numbers](https://uva.onlinejudge.org/index.php?option=onlinejudge&page=show_problem&problem=2302)|UVA|3|\n|<ul><li>- [ ] Done</li></ul>|3|[Binary Search Heap Construction](http://poj.org/problem?id=1785)|PKU|3|\n"
  },
  {
    "path": "categories/128. linked_list/README.md",
    "content": "# 128. linked_list\n\n\n| Checkbox | ID | Problem Name|Online Judge|Contest|Difficulty Level|\n|:---:|:---:|:---:|:---:|:---:|:---:|\n|<ul><li>- [ ] Done</li></ul>|1|[Burn the Linked Camp](http://acm.zju.edu.cn/onlinejudge/showProblem.do?problemCode=2770)|ZOJ||1|\n|<ul><li>- [ ] Done</li></ul>|2|[Escape from Stones](http://codeforces.com/problemset/problem/264/A)|Codeforces|Codeforces Round #162 (Div. 1) & Codeforces Round #162 (Div. 2)|2|\n|<ul><li>- [ ] Done</li></ul>|3|[SBE201 Linked List](http://www.spoj.com/problems/SBE201P2/)|SPOJ||4|\n"
  },
  {
    "path": "categories/129. Z_algorithm/README.md",
    "content": "# 129. Z_algorithm\n\n\n| Checkbox | ID | Problem Name|Online Judge|Contest|Difficulty Level|\n|:---:|:---:|:---:|:---:|:---:|:---:|\n|<ul><li>- [ ] Done</li></ul>|1|[Query Problem](http://www.spoj.com/problems/QUERYSTR/)|SPOJ||2|\n|<ul><li>- [ ] Done</li></ul>|2|[Password](http://codeforces.com/problemset/problem/126/B)|Codeforces|Codeforces Beta Round #93 (Div. 1 Only) & Codeforces Beta Round #93 (Div. 2 Only)|2|\n|<ul><li>- [ ] Done</li></ul>|3|[Ancient Prophesy](http://codeforces.com/problemset/problem/260/B)|Codeforces|Codeforces Round #158 (Div. 2)|4|\n"
  },
  {
    "path": "categories/130. Minkowski_addition/README.md",
    "content": "# 130. Minkowski_addition\n\n\n| Checkbox | ID | Problem Name|Online Judge|Contest|Difficulty Level|\n|:---:|:---:|:---:|:---:|:---:|:---:|\n|<ul><li>- [ ] Done</li></ul>|1|[Separate Points](http://www.spoj.com/problems/SPOINTS/)|SPOJ||4|\n|<ul><li>- [ ] Done</li></ul>|2|[Non-Flying Weather](http://acm.timus.ru/problem.aspx?space=1&num=1894)|Timus||9|\n|<ul><li>- [ ] Done</li></ul>|3|[Mogohu-Rea Idol](http://codeforces.com/problemset/problem/87/E)|Codeforces|Codeforces Beta Round #73 (Div. 1 Only)|10|\n"
  },
  {
    "path": "categories/131. Prefix_Sums/README.md",
    "content": "# 131. Prefix_Sums\n\n\n| Checkbox | ID | Problem Name|Online Judge|Contest|Difficulty Level|\n|:---:|:---:|:---:|:---:|:---:|:---:|\n|<ul><li>- [ ] Done</li></ul>|1|[Nikita and string](http://codeforces.com/problemset/problem/877/B)|Codeforces|Codeforces Round #442 (Div. 2)|2|\n|<ul><li>- [ ] Done</li></ul>|2|[Star sky](http://codeforces.com/problemset/problem/835/C)|Codeforces|Codeforces Round #427 (Div. 2)|3|\n|<ul><li>- [ ] Done</li></ul>|3|[Monitor](http://codeforces.com/problemset/problem/846/D)|Codeforces|Educational Codeforces Round 28|6|\n"
  },
  {
    "path": "categories/132. Algorithm_X/README.md",
    "content": "# 132. Algorithm_X\n\n\n| Checkbox | ID | Problem Name|Online Judge|Difficulty Level|\n|:---:|:---:|:---:|:---:|:---:|\n|<ul><li>- [ ] Done</li></ul>|1|[Yet Another N-Queen Problem](http://www.spoj.com/problems/NQUEEN/)|SPOJ|2|\n|<ul><li>- [ ] Done</li></ul>|2|[Sudoku](http://www.spoj.com/problems/SUDOKU/)|SPOJ|4|\n"
  },
  {
    "path": "categories/133. Voronoi/README.md",
    "content": "# 133. Voronoi\n\n\n| Checkbox | ID | Problem Name|Online Judge|Difficulty Level|\n|:---:|:---:|:---:|:---:|:---:|\n|<ul><li>- [ ] Done</li></ul>|1|[Run Away](http://www.spoj.com/problems/RUNAWAY/)|SPOJ|3|\n|<ul><li>- [ ] Done</li></ul>|2|[Bacterial](http://www.spoj.com/problems/BAC/)|SPOJ|5|\n"
  },
  {
    "path": "categories/134. Max_points_on_line/README.md",
    "content": "# 134. Max_points_on_line\n\n\n| Checkbox | ID | Problem Name|Online Judge|Difficulty Level|\n|:---:|:---:|:---:|:---:|:---:|\n|<ul><li>- [ ] Done</li></ul>|1|[A Chase In WonderLand](http://www.spoj.com/problems/CHASE/)|SPOJ|2|\n|<ul><li>- [ ] Done</li></ul>|2|[Swamp Things](http://www.spoj.com/problems/SWTHIN/)|SPOJ|3|\n"
  },
  {
    "path": "categories/135. Minimum_Enclosing_Circle/README.md",
    "content": "# 135. Minimum_Enclosing_Circle\n\n\n| Checkbox | ID | Problem Name|Online Judge|Difficulty Level|\n|:---:|:---:|:---:|:---:|:---:|\n|<ul><li>- [ ] Done</li></ul>|1|[Aliens](http://www.spoj.com/problems/ALIENS/)|SPOJ|2|\n|<ul><li>- [ ] Done</li></ul>|2|[Minimum Diameter Circle](http://www.spoj.com/problems/QCJ4/)|SPOJ|2|\n"
  },
  {
    "path": "categories/136. Polygon_centroid/README.md",
    "content": "# 136. Polygon_centroid\n\n\n| Checkbox | ID | Problem Name|Online Judge|Year|Contest|Difficulty Level|\n|:---:|:---:|:---:|:---:|:---:|:---:|:---:|\n|<ul><li>- [ ] Done</li></ul>|1|[Lifting the Stone](http://www.spoj.com/problems/STONE/)|SPOJ|||1|\n|<ul><li>- [ ] Done</li></ul>|2|[Area of Polycubes](https://icpcarchive.ecs.baylor.edu/index.php?option=onlinejudge&page=show_problem&problem=2239)|Live Archive|2008|North America - Greater NY|1|\n"
  },
  {
    "path": "categories/137. Pigeonhole_principle/README.md",
    "content": "# 137. Pigeonhole_principle\n\n\n| Checkbox | ID | Problem Name|Online Judge|Difficulty Level|\n|:---:|:---:|:---:|:---:|:---:|\n|<ul><li>- [ ] Done</li></ul>|1|[Labyrinth](http://www.spoj.com/problems/LABYR1/)|SPOJ|1|\n|<ul><li>- [ ] Done</li></ul>|2|[Halloween treats](http://www.spoj.com/problems/HALLOW/)|SPOJ|2|\n"
  },
  {
    "path": "categories/138. Factoradic_Index/README.md",
    "content": "# 138. Factoradic_Index\n\n\n| Checkbox | ID | Problem Name|Online Judge|Difficulty Level|\n|:---:|:---:|:---:|:---:|:---:|\n|<ul><li>- [ ] Done</li></ul>|1|[Permalex](http://www.spoj.com/problems/PRMLX/)|SPOJ|3|\n|<ul><li>- [ ] Done</li></ul>|2|[Spelling Lists](http://www.spoj.com/problems/MIB/)|SPOJ|4|\n"
  },
  {
    "path": "categories/139. Linear_Programming/README.md",
    "content": "# 139. Linear_Programming\n\n\n| Checkbox | ID | Problem Name|Online Judge|Difficulty Level|\n|:---:|:---:|:---:|:---:|:---:|\n|<ul><li>- [ ] Done</li></ul>|1|[01 Sequence](http://www.spoj.com/problems/SEQ1/)|SPOJ|4|\n|<ul><li>- [ ] Done</li></ul>|2|[Integer Linear Programming](http://acm.sgu.ru/problem.php?contest=0&problem=248)|SGU|4|\n"
  },
  {
    "path": "categories/140. Biconnected_Component/README.md",
    "content": "# 140. Biconnected_Component\n\n\n| Checkbox | ID | Problem Name|Online Judge|Difficulty Level|\n|:---:|:---:|:---:|:---:|:---:|\n|<ul><li>- [ ] Done</li></ul>|1|[To inifinity and Beyond](http://www.spoj.com/problems/BUZZ/)|SPOJ|6|\n|<ul><li>- [ ] Done</li></ul>|2|[Interesting Route](https://uva.onlinejudge.org/index.php?option=onlinejudge&page=show_problem&problem=3923)|UVA|9|\n"
  },
  {
    "path": "categories/141. data_structure/README.md",
    "content": "# 141. data_structure\n\n\n| Checkbox | ID | Problem Name|Online Judge|Contest|Difficulty Level|\n|:---:|:---:|:---:|:---:|:---:|:---:|\n|<ul><li>- [ ] Done</li></ul>|1|[subarrays](http://www.spoj.com/problems/ARRAYSUB/)|SPOJ||1|\n|<ul><li>- [ ] Done</li></ul>|2|[Little Girl and Maximum Sum](http://codeforces.com/problemset/problem/276/C)|Codeforces|Codeforces Round #169 (Div. 2)|1|\n"
  },
  {
    "path": "categories/142. bst/README.md",
    "content": "# 142. bst\n\n\n| Checkbox | ID | Problem Name|Online Judge|Difficulty Level|\n|:---:|:---:|:---:|:---:|:---:|\n|<ul><li>- [ ] Done</li></ul>|1|[The Playboy Chimp](https://uva.onlinejudge.org/index.php?option=onlinejudge&page=show_problem&problem=1552)|UVA|1|\n|<ul><li>- [ ] Done</li></ul>|2|[Binary Search Tree](http://www.spoj.com/problems/BST/)|SPOJ|2|\n"
  },
  {
    "path": "categories/143. dfs/README.md",
    "content": "# 143. dfs\n\n\n| Checkbox | ID | Problem Name|Online Judge|Contest|Difficulty Level|\n|:---:|:---:|:---:|:---:|:---:|:---:|\n|<ul><li>- [ ] Done</li></ul>|1|[A Bug&#8217;s Life](http://www.spoj.com/problems/BUGLIFE/)|SPOJ||1|\n|<ul><li>- [ ] Done</li></ul>|2|[Ice Skating](http://codeforces.com/problemset/problem/217/A)|Codeforces|Codeforces Round #134 (Div. 1) & Codeforces Round #134 (Div. 2)|1|\n"
  },
  {
    "path": "categories/144. dp/README.md",
    "content": "# 144. dp\n\n\n| Checkbox | ID | Problem Name|Online Judge|Contest|Difficulty Level|\n|:---:|:---:|:---:|:---:|:---:|:---:|\n|<ul><li>- [ ] Done</li></ul>|1|[A DP Problem](https://uva.onlinejudge.org/index.php?option=onlinejudge&page=show_problem&problem=3641)|UVA||4|\n|<ul><li>- [ ] Done</li></ul>|2|[Almost Arithmetical Progression](http://codeforces.com/problemset/problem/255/C)|Codeforces|Codeforces Round #156 (Div. 2) & Codeforces Round #156 (Div. 1)|4|\n"
  },
  {
    "path": "categories/145. maxflow/README.md",
    "content": "# 145. maxflow\n\n\n| Checkbox | ID | Problem Name|Online Judge|Difficulty Level|\n|:---:|:---:|:---:|:---:|:---:|\n|<ul><li>- [ ] Done</li></ul>|1|[Omar](p?ID=1)|A2 Online Judge|1|\n|<ul><li>- [ ] Done</li></ul>|2|[The 3n + 1 problem](https://uva.onlinejudge.org/index.php?option=onlinejudge&page=show_problem&problem=36)|UVA|1|\n"
  },
  {
    "path": "categories/146. MST/README.md",
    "content": "# 146. MST\n\n\n| Checkbox | ID | Problem Name|Online Judge|Year|Contest|Difficulty Level|\n|:---:|:---:|:---:|:---:|:---:|:---:|:---:|\n|<ul><li>- [ ] Done</li></ul>|1|[Anti Brute Force Lock](https://uva.onlinejudge.org/index.php?option=onlinejudge&page=show_problem&problem=3676)|UVA|||3|\n|<ul><li>- [ ] Done</li></ul>|2|[Imperial roads](https://icpcarchive.ecs.baylor.edu/index.php?option=onlinejudge&page=show_problem&problem=6218)|Live Archive|2017|Latin America|5|\n"
  },
  {
    "path": "categories/147. big_mod/README.md",
    "content": "# 147. big_mod\n\n\n| Checkbox | ID | Problem Name|Online Judge|Difficulty Level|\n|:---:|:---:|:---:|:---:|:---:|\n|<ul><li>- [ ] Done</li></ul>|1|[Big Mod](https://uva.onlinejudge.org/index.php?option=onlinejudge&page=show_problem&problem=310)|UVA|1|\n|<ul><li>- [ ] Done</li></ul>|2|[Ones](https://uva.onlinejudge.org/index.php?option=onlinejudge&page=show_problem&problem=1068)|UVA|1|\n"
  },
  {
    "path": "categories/148. SQRT_Heuristic/README.md",
    "content": "# 148. SQRT_Heuristic\n\n\n| Checkbox | ID | Problem Name|Online Judge|Contest|Difficulty Level|\n|:---:|:---:|:---:|:---:|:---:|:---:|\n|<ul><li>- [ ] Done</li></ul>|1|[Mr. Kitayuta's Colorful Graph](http://codeforces.com/problemset/problem/506/D)|Codeforces|Codeforces Round #286 (Div. 1) & Codeforces Round #286 (Div. 2) & Codeforces Round #286 (Div. 1) & Codeforces Round #286 (Div. 2)|2|\n|<ul><li>- [ ] Done</li></ul>|2|[Time to Raid Cowavans](http://codeforces.com/problemset/problem/103/D)|Codeforces|Codeforces Beta Round #80 (Div. 1 Only) & Codeforces Beta Round #80 (Div. 2 Only)|6|\n"
  },
  {
    "path": "categories/149. frequency_ARRAY/README.md",
    "content": "# 149. frequency_ARRAY\n\n\n| Checkbox | ID | Problem Name|Online Judge|Contest|Difficulty Level|\n|:---:|:---:|:---:|:---:|:---:|:---:|\n|<ul><li>- [ ] Done</li></ul>|1|[K-Palindrome](p?ID=276)|A2 Online Judge||4|\n|<ul><li>- [ ] Done</li></ul>|2|[ZgukistringZ](http://codeforces.com/problemset/problem/551/B)|Codeforces|Codeforces Round #307 (Div. 2)|4|\n"
  },
  {
    "path": "categories/150. Circle_sweep/README.md",
    "content": "# 150. Circle_sweep\n\n\n| Checkbox | ID | Problem Name|Online Judge|Difficulty Level|\n|:---:|:---:|:---:|:---:|:---:|\n|<ul><li>- [ ] Done</li></ul>|1|[Cell Phone](http://www.spoj.com/problems/CERC07C/)|SPOJ|4|\n"
  },
  {
    "path": "categories/151. maximum_empty_rectangle/README.md",
    "content": "# 151. maximum_empty_rectangle\n\n\n| Checkbox | ID | Problem Name|Online Judge|Difficulty Level|\n|:---:|:---:|:---:|:---:|:---:|\n|<ul><li>- [ ] Done</li></ul>|1|[City Game](http://www.spoj.com/problems/CTGAME/)|SPOJ|1|\n"
  },
  {
    "path": "categories/152. Stable_Marriage/README.md",
    "content": "# 152. Stable_Marriage\n\n\n| Checkbox | ID | Problem Name|Online Judge|Difficulty Level|\n|:---:|:---:|:---:|:---:|:---:|\n|<ul><li>- [ ] Done</li></ul>|1|[Stable Marriage Problem](http://www.spoj.com/problems/STABLEMP/)|SPOJ|1|\n"
  },
  {
    "path": "categories/README.md",
    "content": "# Categories\n\n\n| Checkbox                     |  ID   |                                                        Category                                                         | Problems Count |\n| ---------------------------- | :---: | :---------------------------------------------------------------------------------------------------------------------: | -------------- |\n| <ul><li>- [ ] Done</li></ul> |   1   |                               [Dynamic Programming](001.%20Dynamic_Programming/README.md)                               | 1211           |\n| <ul><li>- [ ] Done</li></ul> |   2   |                                    [implementation](002.%20implementation/README.md)                                    | 1054           |\n| <ul><li>- [ ] Done</li></ul> |   3   |                                              [math](003.%20math/README.md)                                              | 679            |\n| <ul><li>- [ ] Done</li></ul> |   4   |                                            [Greedy](004.%20Greedy/README.md)                                            | 599            |\n| <ul><li>- [ ] Done</li></ul> |   5   |                                [DFS & BFS & Dijkstra](005.%20DFS_BFS_Dijkstra/README.md)                                | 565            |\n| <ul><li>- [ ] Done</li></ul> |   6   |                                       [brute force](006.%20brute_force/README.md)                                       | 494            |\n| <ul><li>- [ ] Done</li></ul> |   7   |                                   [data structures](007.%20data_structures/README.md)                                   | 489            |\n| <ul><li>- [ ] Done</li></ul> |   8   |                    [Codeforces Div. 2 - A Problems](008.%20Codeforces_Div._2_-_A_Problems/README.md)                    | 478            |\n| <ul><li>- [ ] Done</li></ul> |   9   |                    [Codeforces Div. 2 - C Problems](009.%20Codeforces_Div._2_-_C_Problems/README.md)                    | 460            |\n| <ul><li>- [ ] Done</li></ul> |  10   |                    [Codeforces Div. 2 - B Problems](010.%20Codeforces_Div._2_-_B_Problems/README.md)                    | 457            |\n| <ul><li>- [ ] Done</li></ul> |  11   |                    [Codeforces Div. 2 - D Problems](011.%20Codeforces_Div._2_-_D_Problems/README.md)                    | 443            |\n| <ul><li>- [ ] Done</li></ul> |  12   |                    [Codeforces Div. 2 - E Problems](012.%20Codeforces_Div._2_-_E_Problems/README.md)                    | 439            |\n| <ul><li>- [ ] Done</li></ul> |  13   |                     [Binary Search & Ternary Search](013.%20Binary_Search_Ternary_Search/README.md)                     | 350            |\n| <ul><li>- [ ] Done</li></ul> |  14   |                           [constructive algorithms](014.%20constructive_algorithms/README.md)                           | 331            |\n| <ul><li>- [ ] Done</li></ul> |  15   |                                          [sortings](015.%20sortings/README.md)                                          | 316            |\n| <ul><li>- [ ] Done</li></ul> |  16   |                                            [graphs](016.%20graphs/README.md)                                            | 291            |\n| <ul><li>- [ ] Done</li></ul> |  17   |                                          [Geometry](017.%20Geometry/README.md)                                          | 254            |\n| <ul><li>- [ ] Done</li></ul> |  18   |                                     [Number Theory](018.%20Number_Theory/README.md)                                     | 251            |\n| <ul><li>- [ ] Done</li></ul> |  19   |                                           [strings](019.%20strings/README.md)                                           | 216            |\n| <ul><li>- [ ] Done</li></ul> |  20   |                                     [combinatorics](020.%20combinatorics/README.md)                                     | 215            |\n| <ul><li>- [ ] Done</li></ul> |  21   |                              [Codeforces Div. 1, D](021.%20Codeforces_Div._1_D/README.md)                               | 209            |\n| <ul><li>- [ ] Done</li></ul> |  22   |                                             [trees](022.%20trees/README.md)                                             | 202            |\n| <ul><li>- [ ] Done</li></ul> |  23   |                                      [Segment Tree](023.%20Segment_Tree/README.md)                                      | 162            |\n| <ul><li>- [ ] Done</li></ul> |  24   |                                      [Network Flow](024.%20Network_Flow/README.md)                                      | 159            |\n| <ul><li>- [ ] Done</li></ul> |  25   |                                     [probabilities](025.%20probabilities/README.md)                                     | 153            |\n| <ul><li>- [ ] Done</li></ul> |  26   |                                      [two pointers](026.%20two_pointers/README.md)                                      | 128            |\n| <ul><li>- [ ] Done</li></ul> |  27   |                    [Codeforces Div. 2 - F Problems](027.%20Codeforces_Div._2_-_F_Problems/README.md)                    | 119            |\n| <ul><li>- [ ] Done</li></ul> |  28   |                                               [dsu](028.%20dsu/README.md)                                               | 116            |\n| <ul><li>- [ ] Done</li></ul> |  29   |                                          [bitmasks](029.%20bitmasks/README.md)                                          | 113            |\n| <ul><li>- [ ] Done</li></ul> |  30   |                                      [Matrix Power](030.%20Matrix_Power/README.md)                                      | 90             |\n| <ul><li>- [ ] Done</li></ul> |  31   |                                             [games](031.%20games/README.md)                                             | 81             |\n| <ul><li>- [ ] Done</li></ul> |  32   |                             [MST,Disjoint sets,SCC](032.%20MST_Disjoint_sets_SCC/README.md)                             | 77             |\n| <ul><li>- [ ] Done</li></ul> |  33   |                                           [hashing](033.%20hashing/README.md)                                           | 76             |\n| <ul><li>- [ ] Done</li></ul> |  34   |                               [Binary Indexed Tree](034.%20Binary_Indexed_Tree/README.md)                               | 69             |\n| <ul><li>- [ ] Done</li></ul> |  35   |                                [divide and conquer](035.%20divide_and_conquer/README.md)                                | 66             |\n| <ul><li>- [ ] Done</li></ul> |  36   |                                            [Ad-hoc](036.%20Ad-hoc/README.md)                                            | 64             |\n| <ul><li>- [ ] Done</li></ul> |  37   |                                              [CUET](037.%20CUET/README.md)                                              | 56             |\n| <ul><li>- [ ] Done</li></ul> |  38   | [Maximum Matching / Vertex Cover on Bipartite Graph](038.%20Maximum_Matching_Vertex_Cover_on_Bipartite_Graph/README.md) | 50             |\n| <ul><li>- [ ] Done</li></ul> |  39   |                                              [Trie](039.%20Trie/README.md)                                              | 42             |\n| <ul><li>- [ ] Done</li></ul> |  40   |                                      [backtracking](040.%20backtracking/README.md)                                      | 42             |\n| <ul><li>- [ ] Done</li></ul> |  41   |                                               [bfs](041.%20bfs/README.md)                                               | 37             |\n| <ul><li>- [ ] Done</li></ul> |  42   |                        [Heavy-Light Descomposition](042.%20Heavy-Light_Descomposition/README.md)                        | 36             |\n| <ul><li>- [ ] Done</li></ul> |  43   |                 [Non-Classical Dynamic Programming](043.%20Non-Classical_Dynamic_Programming/README.md)                 | 36             |\n| <ul><li>- [ ] Done</li></ul> |  44   |                                               [KMP](044.%20KMP/README.md)                                               | 35             |\n| <ul><li>- [ ] Done</li></ul> |  45   |                          [string suffix structures](045.%20string_suffix_structures/README.md)                          | 35             |\n| <ul><li>- [ ] Done</li></ul> |  46   |                            [expresison and parsing](046.%20expresison_and_parsing/README.md)                            | 33             |\n| <ul><li>- [ ] Done</li></ul> |  47   |                                [Meet in The Middle](047.%20Meet_in_The_Middle/README.md)                                | 29             |\n| <ul><li>- [ ] Done</li></ul> |  48   |                                 [Suffix Array/Tree](048.%20Suffix_Array_Tree/README.md)                                 | 27             |\n| <ul><li>- [ ] Done</li></ul> |  49   |                                      [0/1 Knapsack](049.%200_1_Knapsack/README.md)                                      | 27             |\n| <ul><li>- [ ] Done</li></ul> |  50   |                      [Balanced Binary Search Trees](050.%20Balanced_Binary_Search_Trees/README.md)                      | 26             |\n| <ul><li>- [ ] Done</li></ul> |  51   |   [MO?s Algorithm (Query square root decomposition)](051.%20MO_s_Algorithm_Query_square_root_decomposition/README.md)   | 24             |\n| <ul><li>- [ ] Done</li></ul> |  52   |                                               [FFT](052.%20FFT/README.md)                                               | 23             |\n| <ul><li>- [ ] Done</li></ul> |  53   |                                       [Convex hull](053.%20Convex_hull/README.md)                                       | 22             |\n| <ul><li>- [ ] Done</li></ul> |  54   |                                   [TopologicalSort](054.%20TopologicalSort/README.md)                                   | 21             |\n| <ul><li>- [ ] Done</li></ul> |  55   |                                              [2sat](055.%202sat/README.md)                                              | 21             |\n| <ul><li>- [ ] Done</li></ul> |  56   |                                               [LIS](056.%20LIS/README.md)                                               | 21             |\n| <ul><li>- [ ] Done</li></ul> |  57   |             [ACM-ICPC Dhaka Site Regional Contests](057.%20ACM-ICPC_Dhaka_Site_Regional_Contests/README.md)             | 20             |\n| <ul><li>- [ ] Done</li></ul> |  58   |                                        [polynomial](058.%20polynomial/README.md)                                        | 20             |\n| <ul><li>- [ ] Done</li></ul> |  59   |            [All Pair Shortest Path (Floyd-Warshall)](059.%20All_Pair_Shortest_Path_Floyd-Warshall/README.md)            | 18             |\n| <ul><li>- [ ] Done</li></ul> |  60   |                                               [LCS](060.%20LCS/README.md)                                               | 17             |\n| <ul><li>- [ ] Done</li></ul> |  61   |                                      [Aho-Corasick](061.%20Aho-Corasick/README.md)                                      | 16             |\n| <ul><li>- [ ] Done</li></ul> |  62   |                                               [LCA](062.%20LCA/README.md)                                               | 16             |\n| <ul><li>- [ ] Done</li></ul> |  63   |                                      [EulerianTour](063.%20EulerianTour/README.md)                                      | 15             |\n| <ul><li>- [ ] Done</li></ul> |  64   |                     [Strongly Connected Components](064.%20Strongly_Connected_Components/README.md)                     | 15             |\n| <ul><li>- [ ] Done</li></ul> |  65   |                                       [interactive](065.%20interactive/README.md)                                       | 15             |\n| <ul><li>- [ ] Done</li></ul> |  66   |                                     [back-tracking](066.%20back-tracking/README.md)                                     | 14             |\n| <ul><li>- [ ] Done</li></ul> |  67   |                            [Lowest Common Ancestor](067.%20Lowest_Common_Ancestor/README.md)                            | 14             |\n| <ul><li>- [ ] Done</li></ul> |  68   |                                  [Suffix automaton](068.%20Suffix_automaton/README.md)                                  | 14             |\n| <ul><li>- [ ] Done</li></ul> |  69   |                            [Centroid Decomposition](069.%20Centroid_Decomposition/README.md)                            | 14             |\n| <ul><li>- [ ] Done</li></ul> |  70   |                                        [line sweep](070.%20line_sweep/README.md)                                        | 13             |\n| <ul><li>- [ ] Done</li></ul> |  71   |                               [Hungarian Algorithm](071.%20Hungarian_Algorithm/README.md)                               | 13             |\n| <ul><li>- [ ] Done</li></ul> |  72   |                                         [Reasoning](072.%20Reasoning/README.md)                                         | 13             |\n| <ul><li>- [ ] Done</li></ul> |  73   |                              [Gaussian elimination](073.%20Gaussian_elimination/README.md)                              | 11             |\n| <ul><li>- [ ] Done</li></ul> |  74   |                                           [DFS&BFS](074.%20DFS_BFS/README.md)                                           | 10             |\n| <ul><li>- [ ] Done</li></ul> |  75   |                                       [Coin Change](075.%20Coin_Change/README.md)                                       | 10             |\n| <ul><li>- [ ] Done</li></ul> |  76   |                                          [Strategy](076.%20Strategy/README.md)                                          | 10             |\n| <ul><li>- [ ] Done</li></ul> |  77   |                                   [Mobius Function](077.%20Mobius_Function/README.md)                                   | 10             |\n| <ul><li>- [ ] Done</li></ul> |  78   |                                        [Math Games](078.%20Math_Games/README.md)                                        | 9              |\n| <ul><li>- [ ] Done</li></ul> |  79   |                                     [Edit Distance](079.%20Edit_Distance/README.md)                                     | 9              |\n| <ul><li>- [ ] Done</li></ul> |  80   |                                            [ad hoc](080.%20ad_hoc/README.md)                                            | 9              |\n| <ul><li>- [ ] Done</li></ul> |  81   |                                               [STL](081.%20STL/README.md)                                               | 9              |\n| <ul><li>- [ ] Done</li></ul> |  82   |                           [Persistent Segment Tree](082.%20Persistent_Segment_Tree/README.md)                           | 9              |\n| <ul><li>- [ ] Done</li></ul> |  83   |                                      [TowerOfHanoi](083.%20TowerOfHanoi/README.md)                                      | 9              |\n| <ul><li>- [ ] Done</li></ul> |  84   |                                [Sqrt decomposition](084.%20Sqrt_decomposition/README.md)                                | 9              |\n| <ul><li>- [ ] Done</li></ul> |  85   |                             [Numerical_Integration](085.%20Numerical_Integration/README.md)                             | 9              |\n| <ul><li>- [ ] Done</li></ul> |  86   |                                [Articulation Point](086.%20Articulation_Point/README.md)                                | 8              |\n| <ul><li>- [ ] Done</li></ul> |  87   |                                             [Heaps](087.%20Heaps/README.md)                                             | 8              |\n| <ul><li>- [ ] Done</li></ul> |  88   |                                   [Complete Searsh](088.%20Complete_Searsh/README.md)                                   | 8              |\n| <ul><li>- [ ] Done</li></ul> |  89   |                                          [Dijkstra](089.%20Dijkstra/README.md)                                          | 8              |\n| <ul><li>- [ ] Done</li></ul> |  90   |                                  [bit manipulation](090.%20bit_manipulation/README.md)                                  | 8              |\n| <ul><li>- [ ] Done</li></ul> |  91   |                              [Randomized Algorithm](091.%20Randomized_Algorithm/README.md)                              | 8              |\n| <ul><li>- [ ] Done</li></ul> |  92   |                                         [MCM & OBST](092.%20MCM_OBST/README.md)                                         | 7              |\n| <ul><li>- [ ] Done</li></ul> |  93   |                               [Simulated Annealing](093.%20Simulated_Annealing/README.md)                               | 7              |\n| <ul><li>- [ ] Done</li></ul> |  94   |                                     [segment trees](094.%20segment_trees/README.md)                                     | 7              |\n| <ul><li>- [ ] Done</li></ul> |  95   |                                               [RMQ](095.%20RMQ/README.md)                                               | 6              |\n| <ul><li>- [ ] Done</li></ul> |  96   |                                        [Simulation](096.%20Simulation/README.md)                                        | 6              |\n| <ul><li>- [ ] Done</li></ul> |  97   |                                      [Bellman-Ford](097.%20Bellman-Ford/README.md)                                      | 6              |\n| <ul><li>- [ ] Done</li></ul> |  98   |                                       [big numbers](098.%20big_numbers/README.md)                                       | 6              |\n| <ul><li>- [ ] Done</li></ul> |  99   |                                          [digit dp](099.%20digit_dp/README.md)                                          | 6              |\n| <ul><li>- [ ] Done</li></ul> |  100  |                         [chinese remainder theorem](100.%20chinese_remainder_theorem/README.md)                         | 6              |\n| <ul><li>- [ ] Done</li></ul> |  101  |                                           [0/1 BFS](101.%200_1_BFS/README.md)                                           | 6              |\n| <ul><li>- [ ] Done</li></ul> |  102  |                         [Square Root Decomposition](102.%20Square_Root_Decomposition/README.md)                         | 6              |\n| <ul><li>- [ ] Done</li></ul> |  103  |                              [BinarySearchVariants](103.%20BinarySearchVariants/README.md)                              | 6              |\n| <ul><li>- [ ] Done</li></ul> |  104  |                                        [Rabin-Karp](104.%20Rabin-Karp/README.md)                                        | 5              |\n| <ul><li>- [ ] Done</li></ul> |  105  |                                 [kth shortest path](105.%20kth_shortest_path/README.md)                                 | 5              |\n| <ul><li>- [ ] Done</li></ul> |  106  |                                      [Optimization](106.%20Optimization/README.md)                                      | 5              |\n| <ul><li>- [ ] Done</li></ul> |  107  |                                       [Game Theory](107.%20Game_Theory/README.md)                                       | 5              |\n| <ul><li>- [ ] Done</li></ul> |  108  |                                         [Recursion](108.%20Recursion/README.md)                                         | 5              |\n| <ul><li>- [ ] Done</li></ul> |  109  |                                             [Treap](109.%20Treap/README.md)                                             | 5              |\n| <ul><li>- [ ] Done</li></ul> |  110  |                             [matrix exponentiation](110.%20matrix_exponentiation/README.md)                             | 5              |\n| <ul><li>- [ ] Done</li></ul> |  111  |                             [Minimum Spanning Tree](111.%20Minimum_Spanning_Tree/README.md)                             | 5              |\n| <ul><li>- [ ] Done</li></ul> |  112  |                                  [2D Range Queries](112.%202D_Range_Queries/README.md)                                  | 5              |\n| <ul><li>- [ ] Done</li></ul> |  113  |                                 [Minimum Cost Flow](113.%20Minimum_Cost_Flow/README.md)                                 | 5              |\n| <ul><li>- [ ] Done</li></ul> |  114  |                                               [ETF](114.%20ETF/README.md)                                               | 5              |\n| <ul><li>- [ ] Done</li></ul> |  115  |                                      [Partitioning](115.%20Partitioning/README.md)                                      | 4              |\n| <ul><li>- [ ] Done</li></ul> |  116  |                                  [Grid compression](116.%20Grid_compression/README.md)                                  | 4              |\n| <ul><li>- [ ] Done</li></ul> |  117  |                                         [schedules](117.%20schedules/README.md)                                         | 4              |\n| <ul><li>- [ ] Done</li></ul> |  118  |                                                [AI](118.%20AI/README.md)                                                | 4              |\n| <ul><li>- [ ] Done</li></ul> |  119  |                                             [tries](119.%20tries/README.md)                                             | 4              |\n| <ul><li>- [ ] Done</li></ul> |  120  |                    [Graph basics concepts BFS & DFS](120.%20Graph_basics_concepts_BFS_DFS/README.md)                    | 4              |\n| <ul><li>- [ ] Done</li></ul> |  121  |                               [Kadane's Algorithm](121.%20Kadane%27s_Algorithm/README.md)                               | 4              |\n| <ul><li>- [ ] Done</li></ul> |  122  |                                        [Range tree](122.%20Range_tree/README.md)                                        | 3              |\n| <ul><li>- [ ] Done</li></ul> |  123  |                             [Newton Raphson method](123.%20Newton_Raphson_method/README.md)                             | 3              |\n| <ul><li>- [ ] Done</li></ul> |  124  |                                   [Float precision](124.%20Float_precision/README.md)                                   | 3              |\n| <ul><li>- [ ] Done</li></ul> |  125  |                            [Difference Constraints](125.%20Difference_Constraints/README.md)                            | 3              |\n| <ul><li>- [ ] Done</li></ul> |  126  |                                        [flood fill](126.%20flood_fill/README.md)                                        | 3              |\n| <ul><li>- [ ] Done</li></ul> |  127  |                                     [binary search](127.%20binary_search/README.md)                                     | 3              |\n| <ul><li>- [ ] Done</li></ul> |  128  |                                       [linked list](128.%20linked_list/README.md)                                       | 3              |\n| <ul><li>- [ ] Done</li></ul> |  129  |                                       [Z algorithm](129.%20Z_algorithm/README.md)                                       | 3              |\n| <ul><li>- [ ] Done</li></ul> |  130  |                                [Minkowski addition](130.%20Minkowski_addition/README.md)                                | 3              |\n| <ul><li>- [ ] Done</li></ul> |  131  |                                       [Prefix Sums](131.%20Prefix_Sums/README.md)                                       | 3              |\n| <ul><li>- [ ] Done</li></ul> |  132  |                                       [Algorithm X](132.%20Algorithm_X/README.md)                                       | 2              |\n| <ul><li>- [ ] Done</li></ul> |  133  |                                           [Voronoi](133.%20Voronoi/README.md)                                           | 2              |\n| <ul><li>- [ ] Done</li></ul> |  134  |                                [Max points on line](134.%20Max_points_on_line/README.md)                                | 2              |\n| <ul><li>- [ ] Done</li></ul> |  135  |                          [Minimum Enclosing Circle](135.%20Minimum_Enclosing_Circle/README.md)                          | 2              |\n| <ul><li>- [ ] Done</li></ul> |  136  |                                  [Polygon centroid](136.%20Polygon_centroid/README.md)                                  | 2              |\n| <ul><li>- [ ] Done</li></ul> |  137  |                              [Pigeonhole principle](137.%20Pigeonhole_principle/README.md)                              | 2              |\n| <ul><li>- [ ] Done</li></ul> |  138  |                                  [Factoradic Index](138.%20Factoradic_Index/README.md)                                  | 2              |\n| <ul><li>- [ ] Done</li></ul> |  139  |                                [Linear Programming](139.%20Linear_Programming/README.md)                                | 2              |\n| <ul><li>- [ ] Done</li></ul> |  140  |                             [Biconnected Component](140.%20Biconnected_Component/README.md)                             | 2              |\n| <ul><li>- [ ] Done</li></ul> |  141  |                                    [data structure](141.%20data_structure/README.md)                                    | 2              |\n| <ul><li>- [ ] Done</li></ul> |  142  |                                               [bst](142.%20bst/README.md)                                               | 2              |\n| <ul><li>- [ ] Done</li></ul> |  143  |                                               [dfs](143.%20dfs/README.md)                                               | 2              |\n| <ul><li>- [ ] Done</li></ul> |  144  |                                                [dp](144.%20dp/README.md)                                                | 2              |\n| <ul><li>- [ ] Done</li></ul> |  145  |                                           [maxflow](145.%20maxflow/README.md)                                           | 2              |\n| <ul><li>- [ ] Done</li></ul> |  146  |                                               [MST](146.%20MST/README.md)                                               | 2              |\n| <ul><li>- [ ] Done</li></ul> |  147  |                                           [big mod](147.%20big_mod/README.md)                                           | 2              |\n| <ul><li>- [ ] Done</li></ul> |  148  |                                    [SQRT Heuristic](148.%20SQRT_Heuristic/README.md)                                    | 2              |\n| <ul><li>- [ ] Done</li></ul> |  149  |                                   [frequency ARRAY](149.%20frequency_ARRAY/README.md)                                   | 2              |\n| <ul><li>- [ ] Done</li></ul> |  150  |                                      [Circle sweep](150.%20Circle_sweep/README.md)                                      | 1              |\n| <ul><li>- [ ] Done</li></ul> |  151  |                          [maximum empty rectangle ](151.%20maximum_empty_rectangle/README.md)                           | 1              |\n| <ul><li>- [ ] Done</li></ul> |  152  |                                   [Stable Marriage](152.%20Stable_Marriage/README.md)                                   | 1              |\n"
  },
  {
    "path": "category.py",
    "content": "from bs4 import BeautifulSoup\nimport requests\nimport urllib\nimport os\nimport re\n\nwrite_to_file = False\n\n\ndef get_problems(cat_heading, url):\n    data = requests.get(url).text\n    soup = BeautifulSoup(data, features=\"lxml\")\n    table = soup.findAll(\"table\")[0]\n\n    prob_data = \"\"\n\n    prob_data += \"# {}\\n\".format(cat_heading)\n    prob_data += \"\\n\"\n    prob_data += \"\\n\"\n\n    headings = table.find_all('th')\n    heading_text = \"| Checkbox | ID | Problem Name\"\n    for i in range(2, len(headings)):\n        heading_text += \"|{}\".format(headings[i].get_text())\n\n    prob_data += heading_text + \"|\\n\"\n    prob_data += \"|:---:\" * (len(headings) + 1) + \"|\"\n    prob_data += \"\\n\"\n    # print(table)\n    for row in table.find_all(\"tr\")[1:]:\n        tds = row.find_all(\"td\")\n\n        prob = \"|<ul><li>- [ ] Done</li></ul>\"\n        id = tds[0].get_text()\n        name = tds[1].get_text()\n        link = tds[1].find(\"a\").get('href')\n        prob += \"|{}|[{}]({})\".format(id, name, link)\n        for i in range(2, len(tds)):\n            prob += \"|{}\".format(tds[i].get_text())\n        prob += \"|\\n\"\n        prob_data += prob\n        # print(prob)\n\n    file = open(os.path.join(\"categories\", cat_heading, \"README.md\"), 'w')\n    file.write(prob_data)\n    file.close()\n\n\nbase_url = \"https://www.a2oj.com/\"\nurl = \"https://www.a2oj.com/Categories.html\"\n\ndata = requests.get(url).text\nsoup = BeautifulSoup(data, features=\"lxml\")\ntables = soup.findAll(\"table\")\n\nheadings = [th.get_text() for th in tables[0].find(\"tr\").find_all(\"th\")]\n# print(headings)\n\nfinal_data = \"#Categories\\n\"\nfinal_data += \"\\n\"\n\nheading_text = \"| Checkbox | ID  | Category | Problems Count |\\n\"\n\nfinal_data += heading_text\nfinal_data += \"|---|:---:|:---:|---|\\n\"\n\nfor row in tables[0].find_all(\"tr\")[1:]:\n    tds = row.find_all(\"td\")\n    id = tds[0].get_text()\n    name = tds[1].get_text()\n    link = \"{}\".format(name)\n    problems_count = tds[2].get_text()\n    dataset = [id, name, link, problems_count]\n    dir_name = re.sub('[\\,\\\\\\/\\&\\?\\(\\)]', ' ', name).rstrip()\n    dir_name = re.sub(' +', '_', dir_name)\n    dir_name = \"{}. {}\".format(id.zfill(3), dir_name)\n    final_data += \"|<ul><li>- [ ] Done</li></ul>|{}|[{}]({}/README.md)|{}|\\n\".format(\n        id, name, urllib.parse.quote(dir_name), problems_count)\n    # print(dir_name)\n    # os.mkdir(\"categories/{}. {}\".format(id.zfill(3), dir_name))\n    category_link = base_url + tds[1].find('a').get('href')\n    print(dir_name)\n    if write_to_file:\n        print(get_problems(dir_name, category_link))\n\nprint(final_data)\nif write_to_file:\n    file = open(os.path.join(\"categories\", \"README.md\"), 'w')\n    file.write(final_data)\n    file.close()\n\nprint(\"Done\")\n"
  },
  {
    "path": "ladders/04. Codeforces Div. 2, A/README.md",
    "content": "# Ladder Name: 4 - Codeforces Div. 2, A\n## Description\n List of random Codeforces problems, all of them are Div. 2 A problems. The problems are sorted, the most solved problem comes first. This is a good practice for whoever is beginner in programming problems.\n## Difficulty Level: 2\n\n| Checkbox | ID  | Problem Name | Online Judge | Difficulty |\n|---|:---:|:---:|---|---|\n|<ul><li>- [ ] Done</li></ul>|1|[Watermelon](http://codeforces.com/problemset/problem/4/A)|Codeforces|1|\n|<ul><li>- [ ] Done</li></ul>|2|[Way Too Long Words](http://codeforces.com/problemset/problem/71/A)|Codeforces|1|\n|<ul><li>- [ ] Done</li></ul>|3|[String Task](http://codeforces.com/problemset/problem/118/A)|Codeforces|2|\n|<ul><li>- [ ] Done</li></ul>|4|[Petya and Strings](http://codeforces.com/problemset/problem/112/A)|Codeforces|1|\n|<ul><li>- [ ] Done</li></ul>|5|[Helpful Maths](http://codeforces.com/problemset/problem/339/A)|Codeforces|1|\n|<ul><li>- [ ] Done</li></ul>|6|[Twins](http://codeforces.com/problemset/problem/160/A)|Codeforces|2|\n|<ul><li>- [ ] Done</li></ul>|7|[Chat room](http://codeforces.com/problemset/problem/58/A)|Codeforces|2|\n|<ul><li>- [ ] Done</li></ul>|8|[Lucky Division](http://codeforces.com/problemset/problem/122/A)|Codeforces|2|\n|<ul><li>- [ ] Done</li></ul>|9|[Presents](http://codeforces.com/problemset/problem/136/A)|Codeforces|1|\n|<ul><li>- [ ] Done</li></ul>|10|[Beautiful Matrix](http://codeforces.com/problemset/problem/263/A)|Codeforces|1|\n|<ul><li>- [ ] Done</li></ul>|11|[Arrival of the General](http://codeforces.com/problemset/problem/144/A)|Codeforces|1|\n|<ul><li>- [ ] Done</li></ul>|12|[Game With Sticks](http://codeforces.com/problemset/problem/451/A)|Codeforces|2|\n|<ul><li>- [ ] Done</li></ul>|13|[Games](http://codeforces.com/problemset/problem/268/A)|Codeforces|1|\n|<ul><li>- [ ] Done</li></ul>|14|[Dubstep](http://codeforces.com/problemset/problem/208/A)|Codeforces|2|\n|<ul><li>- [ ] Done</li></ul>|15|[Young Physicist](http://codeforces.com/problemset/problem/69/A)|Codeforces|1|\n|<ul><li>- [ ] Done</li></ul>|16|[Puzzles](http://codeforces.com/problemset/problem/337/A)|Codeforces|2|\n|<ul><li>- [ ] Done</li></ul>|17|[Expression](http://codeforces.com/problemset/problem/479/A)|Codeforces|2|\n|<ul><li>- [ ] Done</li></ul>|18|[Anton and Letters](http://codeforces.com/problemset/problem/443/A)|Codeforces|1|\n|<ul><li>- [ ] Done</li></ul>|19|[I Wanna Be the Guy](http://codeforces.com/problemset/problem/469/A)|Codeforces|2|\n|<ul><li>- [ ] Done</li></ul>|20|[Even Odds](http://codeforces.com/problemset/problem/318/A)|Codeforces|2|\n|<ul><li>- [ ] Done</li></ul>|21|[Cheap Travel](http://codeforces.com/problemset/problem/466/A)|Codeforces|3|\n|<ul><li>- [ ] Done</li></ul>|22|[Ilya and Bank Account](http://codeforces.com/problemset/problem/313/A)|Codeforces|2|\n|<ul><li>- [ ] Done</li></ul>|23|[Pashmak and Garden](http://codeforces.com/problemset/problem/459/A)|Codeforces|3|\n|<ul><li>- [ ] Done</li></ul>|24|[Dragons](http://codeforces.com/problemset/problem/230/A)|Codeforces|2|\n|<ul><li>- [ ] Done</li></ul>|25|[Dreamoon and Stairs](http://codeforces.com/problemset/problem/476/A)|Codeforces|2|\n|<ul><li>- [ ] Done</li></ul>|26|[Team Olympiad](http://codeforces.com/problemset/problem/490/A)|Codeforces|1|\n|<ul><li>- [ ] Done</li></ul>|27|[Devu, the Singer and Churu, the Joker](http://codeforces.com/problemset/problem/439/A)|Codeforces|2|\n|<ul><li>- [ ] Done</li></ul>|28|[Fox And Snake](http://codeforces.com/problemset/problem/510/A)|Codeforces|1|\n|<ul><li>- [ ] Done</li></ul>|29|[IQ test](http://codeforces.com/problemset/problem/25/A)|Codeforces|1|\n|<ul><li>- [ ] Done</li></ul>|30|[Choosing Teams](http://codeforces.com/problemset/problem/432/A)|Codeforces|1|\n|<ul><li>- [ ] Done</li></ul>|31|[Cakeminator](http://codeforces.com/problemset/problem/330/A)|Codeforces|1|\n|<ul><li>- [ ] Done</li></ul>|32|[Valera and Antique Items](http://codeforces.com/problemset/problem/441/A)|Codeforces|2|\n|<ul><li>- [ ] Done</li></ul>|33|[Appleman and Easy Task](http://codeforces.com/problemset/problem/462/A)|Codeforces|2|\n|<ul><li>- [ ] Done</li></ul>|34|[Bear and Raspberry](http://codeforces.com/problemset/problem/385/A)|Codeforces|2|\n|<ul><li>- [ ] Done</li></ul>|35|[Lunch Rush](http://codeforces.com/problemset/problem/276/A)|Codeforces|1|\n|<ul><li>- [ ] Done</li></ul>|36|[Laptops](http://codeforces.com/problemset/problem/456/A)|Codeforces|3|\n|<ul><li>- [ ] Done</li></ul>|37|[Soft Drinking](http://codeforces.com/problemset/problem/151/A)|Codeforces|1|\n|<ul><li>- [ ] Done</li></ul>|38|[Playing with Dice](http://codeforces.com/problemset/problem/378/A)|Codeforces|1|\n|<ul><li>- [ ] Done</li></ul>|39|[Minimum Difficulty](http://codeforces.com/problemset/problem/496/A)|Codeforces|2|\n|<ul><li>- [ ] Done</li></ul>|40|[Greg's Workout](http://codeforces.com/problemset/problem/255/A)|Codeforces|1|\n|<ul><li>- [ ] Done</li></ul>|41|[Counterexample ](http://codeforces.com/problemset/problem/483/A)|Codeforces|3|\n|<ul><li>- [ ] Done</li></ul>|42|[Valera and X](http://codeforces.com/problemset/problem/404/A)|Codeforces|2|\n|<ul><li>- [ ] Done</li></ul>|43|[Perfect Permutation](http://codeforces.com/problemset/problem/233/A)|Codeforces|1|\n|<ul><li>- [ ] Done</li></ul>|44|[Watching a movie](http://codeforces.com/problemset/problem/499/A)|Codeforces|2|\n|<ul><li>- [ ] Done</li></ul>|45|[Supercentral Point](http://codeforces.com/problemset/problem/165/A)|Codeforces|2|\n|<ul><li>- [ ] Done</li></ul>|46|[Roma and Lucky Numbers](http://codeforces.com/problemset/problem/262/A)|Codeforces|1|\n|<ul><li>- [ ] Done</li></ul>|47|[Contest](http://codeforces.com/problemset/problem/501/A)|Codeforces|2|\n|<ul><li>- [ ] Done</li></ul>|48|[Cut Ribbon](http://codeforces.com/problemset/problem/189/A)|Codeforces|3|\n|<ul><li>- [ ] Done</li></ul>|49|[TL](http://codeforces.com/problemset/problem/350/A)|Codeforces|3|\n|<ul><li>- [ ] Done</li></ul>|50|[Marks](http://codeforces.com/problemset/problem/152/A)|Codeforces|2|\n|<ul><li>- [ ] Done</li></ul>|51|[Colorful Stones (Simplified Edition)](http://codeforces.com/problemset/problem/265/A)|Codeforces|1|\n|<ul><li>- [ ] Done</li></ul>|52|[Domino](http://codeforces.com/problemset/problem/353/A)|Codeforces|3|\n|<ul><li>- [ ] Done</li></ul>|53|[Cifera](http://codeforces.com/problemset/problem/114/A)|Codeforces|3|\n|<ul><li>- [ ] Done</li></ul>|54|[Array](http://codeforces.com/problemset/problem/300/A)|Codeforces|2|\n|<ul><li>- [ ] Done</li></ul>|55|[Fox and Number Game](http://codeforces.com/problemset/problem/389/A)|Codeforces|3|\n|<ul><li>- [ ] Done</li></ul>|56|[Giga Tower](http://codeforces.com/problemset/problem/488/A)|Codeforces|3|\n|<ul><li>- [ ] Done</li></ul>|57|[Parallelepiped](http://codeforces.com/problemset/problem/224/A)|Codeforces|2|\n|<ul><li>- [ ] Done</li></ul>|58|[DZY Loves Chessboard](http://codeforces.com/problemset/problem/445/A)|Codeforces|3|\n|<ul><li>- [ ] Done</li></ul>|59|[Football](http://codeforces.com/problemset/problem/43/A)|Codeforces|2|\n|<ul><li>- [ ] Done</li></ul>|60|[Life Without Zeros](http://codeforces.com/problemset/problem/75/A)|Codeforces|2|\n|<ul><li>- [ ] Done</li></ul>|61|[Yaroslav and Permutations](http://codeforces.com/problemset/problem/296/A)|Codeforces|3|\n|<ul><li>- [ ] Done</li></ul>|62|[Collecting Beats is Fun](http://codeforces.com/problemset/problem/373/A)|Codeforces|2|\n|<ul><li>- [ ] Done</li></ul>|63|[Levko and Table](http://codeforces.com/problemset/problem/361/A)|Codeforces|1|\n|<ul><li>- [ ] Done</li></ul>|64|[Vasya and Digital Root](http://codeforces.com/problemset/problem/355/A)|Codeforces|2|\n|<ul><li>- [ ] Done</li></ul>|65|[Two Bags of Potatoes](http://codeforces.com/problemset/problem/239/A)|Codeforces|3|\n|<ul><li>- [ ] Done</li></ul>|66|[The Child and Homework](http://codeforces.com/problemset/problem/437/A)|Codeforces|3|\n|<ul><li>- [ ] Done</li></ul>|67|[Soroban](http://codeforces.com/problemset/problem/363/A)|Codeforces|1|\n|<ul><li>- [ ] Done</li></ul>|68|[Line to Cashier](http://codeforces.com/problemset/problem/408/A)|Codeforces|1|\n|<ul><li>- [ ] Done</li></ul>|69|[Lever](http://codeforces.com/problemset/problem/376/A)|Codeforces|2|\n|<ul><li>- [ ] Done</li></ul>|70|[Table](http://codeforces.com/problemset/problem/359/A)|Codeforces|2|\n|<ul><li>- [ ] Done</li></ul>|71|[Eugeny and Array](http://codeforces.com/problemset/problem/302/A)|Codeforces|2|\n|<ul><li>- [ ] Done</li></ul>|72|[Dima and Continuous Line](http://codeforces.com/problemset/problem/358/A)|Codeforces|4|\n|<ul><li>- [ ] Done</li></ul>|73|[Reconnaissance 2](http://codeforces.com/problemset/problem/34/A)|Codeforces|2|\n|<ul><li>- [ ] Done</li></ul>|74|[Help Vasilisa the Wise 2](http://codeforces.com/problemset/problem/143/A)|Codeforces|2|\n|<ul><li>- [ ] Done</li></ul>|75|[Comparing Strings](http://codeforces.com/problemset/problem/186/A)|Codeforces|3|\n|<ul><li>- [ ] Done</li></ul>|76|[Palindromic Times](http://codeforces.com/problemset/problem/108/A)|Codeforces|2|\n|<ul><li>- [ ] Done</li></ul>|77|[Guess a number!](http://codeforces.com/problemset/problem/416/A)|Codeforces|4|\n|<ul><li>- [ ] Done</li></ul>|78|[Exams](http://codeforces.com/problemset/problem/194/A)|Codeforces|2|\n|<ul><li>- [ ] Done</li></ul>|79|[Card Game](http://codeforces.com/problemset/problem/106/A)|Codeforces|2|\n|<ul><li>- [ ] Done</li></ul>|80|[Sockets](http://codeforces.com/problemset/problem/257/A)|Codeforces|3|\n|<ul><li>- [ ] Done</li></ul>|81|[Snow Footprints](http://codeforces.com/problemset/problem/298/A)|Codeforces|3|\n|<ul><li>- [ ] Done</li></ul>|82|[Point on Spiral](http://codeforces.com/problemset/problem/279/A)|Codeforces|4|\n|<ul><li>- [ ] Done</li></ul>|83|[Next Test](http://codeforces.com/problemset/problem/27/A)|Codeforces|3|\n|<ul><li>- [ ] Done</li></ul>|84|[Rook, Bishop and King](http://codeforces.com/problemset/problem/370/A)|Codeforces|3|\n|<ul><li>- [ ] Done</li></ul>|85|[Sleuth](http://codeforces.com/problemset/problem/49/A)|Codeforces|1|\n|<ul><li>- [ ] Done</li></ul>|86|[Cows and Primitive Roots](http://codeforces.com/problemset/problem/284/A)|Codeforces|4|\n|<ul><li>- [ ] Done</li></ul>|87|[Funky Numbers](http://codeforces.com/problemset/problem/192/A)|Codeforces|4|\n|<ul><li>- [ ] Done</li></ul>|88|[Bar](http://codeforces.com/problemset/problem/56/A)|Codeforces|3|\n|<ul><li>- [ ] Done</li></ul>|89|[Lefthanders and Righthanders ](http://codeforces.com/problemset/problem/234/A)|Codeforces|4|\n|<ul><li>- [ ] Done</li></ul>|90|[Worms Evolution](http://codeforces.com/problemset/problem/31/A)|Codeforces|2|\n|<ul><li>- [ ] Done</li></ul>|91|[Strange Addition](http://codeforces.com/problemset/problem/305/A)|Codeforces|4|\n|<ul><li>- [ ] Done</li></ul>|92|[Plate Game](http://codeforces.com/problemset/problem/197/A)|Codeforces|4|\n|<ul><li>- [ ] Done</li></ul>|93|[Shell Game](http://codeforces.com/problemset/problem/35/A)|Codeforces|2|\n|<ul><li>- [ ] Done</li></ul>|94|[Chord](http://codeforces.com/problemset/problem/88/A)|Codeforces|3|\n|<ul><li>- [ ] Done</li></ul>|95|[Triangle](http://codeforces.com/problemset/problem/18/A)|Codeforces|4|\n|<ul><li>- [ ] Done</li></ul>|96|[Inna and Pink Pony](http://codeforces.com/problemset/problem/374/A)|Codeforces|5|\n|<ul><li>- [ ] Done</li></ul>|97|[Nineteen](http://codeforces.com/problemset/problem/393/A)|Codeforces|4|\n|<ul><li>- [ ] Done</li></ul>|98|[Inna and Alarm Clock](http://codeforces.com/problemset/problem/390/A)|Codeforces|5|\n|<ul><li>- [ ] Done</li></ul>|99|[On Segment's Own Points](http://codeforces.com/problemset/problem/397/A)|Codeforces|6|\n|<ul><li>- [ ] Done</li></ul>|100|[Cinema](http://codeforces.com/problemset/problem/200/A)|Codeforces|8|\n"
  },
  {
    "path": "ladders/05. Codeforces Div. 2, B/README.md",
    "content": "# Ladder Name: 5 - Codeforces Div. 2, B\n## Description\n List of random Codeforces problems, all of them are Div. 2 B problems. The problems are sorted, the most solved problem comes first. This is a good practice for whoever can solve almost all Div. 2 A problems, but might have some difficulties while solving the B problems.\n## Difficulty Level: 3\n\n| Checkbox | ID  | Problem Name | Online Judge | Difficulty |\n|---|:---:|:---:|---|---|\n|<ul><li>- [ ] Done</li></ul>|1|[Queue at the School](http://codeforces.com/problemset/problem/266/B)|Codeforces|1|\n|<ul><li>- [ ] Done</li></ul>|2|[Xenia and Ringroad](http://codeforces.com/problemset/problem/339/B)|Codeforces|2|\n|<ul><li>- [ ] Done</li></ul>|3|[Fedor and New Game](http://codeforces.com/problemset/problem/467/B)|Codeforces|3|\n|<ul><li>- [ ] Done</li></ul>|4|[Random Teams](http://codeforces.com/problemset/problem/478/B)|Codeforces|3|\n|<ul><li>- [ ] Done</li></ul>|5|[Vanya and Lanterns](http://codeforces.com/problemset/problem/492/B)|Codeforces|3|\n|<ul><li>- [ ] Done</li></ul>|6|[Sort the Array](http://codeforces.com/problemset/problem/451/B)|Codeforces|4|\n|<ul><li>- [ ] Done</li></ul>|7|[Lecture](http://codeforces.com/problemset/problem/499/B)|Codeforces|2|\n|<ul><li>- [ ] Done</li></ul>|8|[T-primes](http://codeforces.com/problemset/problem/230/B)|Codeforces|3|\n|<ul><li>- [ ] Done</li></ul>|9|[Anton and currency you all know](http://codeforces.com/problemset/problem/508/B)|Codeforces|3|\n|<ul><li>- [ ] Done</li></ul>|10|[DZY Loves Strings](http://codeforces.com/problemset/problem/447/B)|Codeforces|2|\n|<ul><li>- [ ] Done</li></ul>|11|[Amr and Pins](http://codeforces.com/problemset/problem/507/B)|Codeforces|4|\n|<ul><li>- [ ] Done</li></ul>|12|[Little Pony and Sort by Shift](http://codeforces.com/problemset/problem/454/B)|Codeforces|4|\n|<ul><li>- [ ] Done</li></ul>|13|[Jzzhu and Sequences](http://codeforces.com/problemset/problem/450/B)|Codeforces|4|\n|<ul><li>- [ ] Done</li></ul>|14|[Roadside Trees (Simplified Edition)](http://codeforces.com/problemset/problem/265/B)|Codeforces|2|\n|<ul><li>- [ ] Done</li></ul>|15|[Find Marble](http://codeforces.com/problemset/problem/285/B)|Codeforces|3|\n|<ul><li>- [ ] Done</li></ul>|16|[Suffix Structures](http://codeforces.com/problemset/problem/448/B)|Codeforces|4|\n|<ul><li>- [ ] Done</li></ul>|17|[Little Elephant and Magic Square](http://codeforces.com/problemset/problem/259/B)|Codeforces|2|\n|<ul><li>- [ ] Done</li></ul>|18|[OR in Matrix](http://codeforces.com/problemset/problem/486/B)|Codeforces|4|\n|<ul><li>- [ ] Done</li></ul>|19|[Football Kit](http://codeforces.com/problemset/problem/432/B)|Codeforces|3|\n|<ul><li>- [ ] Done</li></ul>|20|[Little Girl and Game](http://codeforces.com/problemset/problem/276/B)|Codeforces|3|\n|<ul><li>- [ ] Done</li></ul>|21|[Petya and Staircases](http://codeforces.com/problemset/problem/362/B)|Codeforces|3|\n|<ul><li>- [ ] Done</li></ul>|22|[Books](http://codeforces.com/problemset/problem/279/B)|Codeforces|4|\n|<ul><li>- [ ] Done</li></ul>|23|[Chat Online](http://codeforces.com/problemset/problem/469/B)|Codeforces|3|\n|<ul><li>- [ ] Done</li></ul>|24|[Painting Pebbles](http://codeforces.com/problemset/problem/509/B)|Codeforces|2|\n|<ul><li>- [ ] Done</li></ul>|25|[Vasya and Wrestling](http://codeforces.com/problemset/problem/493/B)|Codeforces|4|\n|<ul><li>- [ ] Done</li></ul>|26|[George and Round](http://codeforces.com/problemset/problem/387/B)|Codeforces|3|\n|<ul><li>- [ ] Done</li></ul>|27|[The Fibonacci Segment](http://codeforces.com/problemset/problem/365/B)|Codeforces|3|\n|<ul><li>- [ ] Done</li></ul>|28|[Trace](http://codeforces.com/problemset/problem/157/B)|Codeforces|2|\n|<ul><li>- [ ] Done</li></ul>|29|[Sale](http://codeforces.com/problemset/problem/34/B)|Codeforces|2|\n|<ul><li>- [ ] Done</li></ul>|30|[Road Construction](http://codeforces.com/problemset/problem/330/B)|Codeforces|3|\n|<ul><li>- [ ] Done</li></ul>|31|[Little Pigs and Wolves](http://codeforces.com/problemset/problem/116/B)|Codeforces|3|\n|<ul><li>- [ ] Done</li></ul>|32|[Before an Exam](http://codeforces.com/problemset/problem/4/B)|Codeforces|1|\n|<ul><li>- [ ] Done</li></ul>|33|[Painting Eggs](http://codeforces.com/problemset/problem/282/B)|Codeforces|4|\n|<ul><li>- [ ] Done</li></ul>|34|[Lucky Substring](http://codeforces.com/problemset/problem/122/B)|Codeforces|2|\n|<ul><li>- [ ] Done</li></ul>|35|[Combination](http://codeforces.com/problemset/problem/155/B)|Codeforces|3|\n|<ul><li>- [ ] Done</li></ul>|36|[Jeff and Periods](http://codeforces.com/problemset/problem/352/B)|Codeforces|3|\n|<ul><li>- [ ] Done</li></ul>|37|[Unary](http://codeforces.com/problemset/problem/133/B)|Codeforces|3|\n|<ul><li>- [ ] Done</li></ul>|38|[Polo the Penguin and Matrix](http://codeforces.com/problemset/problem/289/B)|Codeforces|4|\n|<ul><li>- [ ] Done</li></ul>|39|[Dima and To-do List](http://codeforces.com/problemset/problem/366/B)|Codeforces|3|\n|<ul><li>- [ ] Done</li></ul>|40|[Coins](http://codeforces.com/problemset/problem/58/B)|Codeforces|3|\n|<ul><li>- [ ] Done</li></ul>|41|[Han Solo and Lazer Gun](http://codeforces.com/problemset/problem/514/B)|Codeforces|4|\n|<ul><li>- [ ] Done</li></ul>|42|[Garland](http://codeforces.com/problemset/problem/408/B)|Codeforces|3|\n|<ul><li>- [ ] Done</li></ul>|43|[Flag Day](http://codeforces.com/problemset/problem/357/B)|Codeforces|4|\n|<ul><li>- [ ] Done</li></ul>|44|[Art Union](http://codeforces.com/problemset/problem/416/B)|Codeforces|3|\n|<ul><li>- [ ] Done</li></ul>|45|[Lucky String](http://codeforces.com/problemset/problem/110/B)|Codeforces|2|\n|<ul><li>- [ ] Done</li></ul>|46|[Petya and Countryside](http://codeforces.com/problemset/problem/66/B)|Codeforces|2|\n|<ul><li>- [ ] Done</li></ul>|47|[Archer](http://codeforces.com/problemset/problem/312/B)|Codeforces|3|\n|<ul><li>- [ ] Done</li></ul>|48|[Routine Problem](http://codeforces.com/problemset/problem/337/B)|Codeforces|4|\n|<ul><li>- [ ] Done</li></ul>|49|[Color the Fence](http://codeforces.com/problemset/problem/349/B)|Codeforces|4|\n|<ul><li>- [ ] Done</li></ul>|50|[Levko and Permutation](http://codeforces.com/problemset/problem/361/B)|Codeforces|3|\n|<ul><li>- [ ] Done</li></ul>|51|[Vasya's Calendar](http://codeforces.com/problemset/problem/182/B)|Codeforces|1|\n|<ul><li>- [ ] Done</li></ul>|52|[Reading](http://codeforces.com/problemset/problem/234/B)|Codeforces|3|\n|<ul><li>- [ ] Done</li></ul>|53|[Phone Numbers](http://codeforces.com/problemset/problem/151/B)|Codeforces|3|\n|<ul><li>- [ ] Done</li></ul>|54|[Permutation](http://codeforces.com/problemset/problem/359/B)|Codeforces|3|\n|<ul><li>- [ ] Done</li></ul>|55|[Students and Shoelaces](http://codeforces.com/problemset/problem/129/B)|Codeforces|3|\n|<ul><li>- [ ] Done</li></ul>|56|[Help Kingdom of Far Far Away 2](http://codeforces.com/problemset/problem/143/B)|Codeforces|3|\n|<ul><li>- [ ] Done</li></ul>|57|[The Child and Set](http://codeforces.com/problemset/problem/437/B)|Codeforces|4|\n|<ul><li>- [ ] Done</li></ul>|58|[Non-square Equation](http://codeforces.com/problemset/problem/233/B)|Codeforces|4|\n|<ul><li>- [ ] Done</li></ul>|59|[Special Offer! Super Price 999 Bourles!](http://codeforces.com/problemset/problem/219/B)|Codeforces|4|\n|<ul><li>- [ ] Done</li></ul>|60|[Little Elephant and Sorting](http://codeforces.com/problemset/problem/205/B)|Codeforces|4|\n|<ul><li>- [ ] Done</li></ul>|61|[Walking in the Rain](http://codeforces.com/problemset/problem/192/B)|Codeforces|3|\n|<ul><li>- [ ] Done</li></ul>|62|[Two Tables](http://codeforces.com/problemset/problem/228/B)|Codeforces|4|\n|<ul><li>- [ ] Done</li></ul>|63|[Xenia and Spies](http://codeforces.com/problemset/problem/342/B)|Codeforces|4|\n|<ul><li>- [ ] Done</li></ul>|64|[Lucky Numbers (easy)](http://codeforces.com/problemset/problem/96/B)|Codeforces|4|\n|<ul><li>- [ ] Done</li></ul>|65|[Ping-Pong (Easy Version)](http://codeforces.com/problemset/problem/320/B)|Codeforces|4|\n|<ul><li>- [ ] Done</li></ul>|66|[After Training](http://codeforces.com/problemset/problem/195/B)|Codeforces|3|\n|<ul><li>- [ ] Done</li></ul>|67|[Magic, Wizardry and Wonders](http://codeforces.com/problemset/problem/231/B)|Codeforces|4|\n|<ul><li>- [ ] Done</li></ul>|68|[Limit](http://codeforces.com/problemset/problem/197/B)|Codeforces|4|\n|<ul><li>- [ ] Done</li></ul>|69|[Ancient Prophesy](http://codeforces.com/problemset/problem/260/B)|Codeforces|4|\n|<ul><li>- [ ] Done</li></ul>|70|[Hometask](http://codeforces.com/problemset/problem/214/B)|Codeforces|4|\n|<ul><li>- [ ] Done</li></ul>|71|[Well-known Numbers](http://codeforces.com/problemset/problem/225/B)|Codeforces|4|\n|<ul><li>- [ ] Done</li></ul>|72|[Settlers' Training](http://codeforces.com/problemset/problem/63/B)|Codeforces|3|\n|<ul><li>- [ ] Done</li></ul>|73|[Nearest Fraction](http://codeforces.com/problemset/problem/281/B)|Codeforces|4|\n|<ul><li>- [ ] Done</li></ul>|74|[Counting Rhombi](http://codeforces.com/problemset/problem/189/B)|Codeforces|3|\n|<ul><li>- [ ] Done</li></ul>|75|[Friends](http://codeforces.com/problemset/problem/94/B)|Codeforces|3|\n|<ul><li>- [ ] Done</li></ul>|76|[Undoubtedly Lucky Numbers](http://codeforces.com/problemset/problem/244/B)|Codeforces|4|\n|<ul><li>- [ ] Done</li></ul>|77|[Forming Teams](http://codeforces.com/problemset/problem/216/B)|Codeforces|4|\n|<ul><li>- [ ] Done</li></ul>|78|[Inna and Nine](http://codeforces.com/problemset/problem/374/B)|Codeforces|4|\n|<ul><li>- [ ] Done</li></ul>|79|[Bets](http://codeforces.com/problemset/problem/69/B)|Codeforces|3|\n|<ul><li>- [ ] Done</li></ul>|80|[Young Photographer](http://codeforces.com/problemset/problem/14/B)|Codeforces|4|\n|<ul><li>- [ ] Done</li></ul>|81|[Martian Clock](http://codeforces.com/problemset/problem/149/B)|Codeforces|4|\n|<ul><li>- [ ] Done</li></ul>|82|[Jury Size](http://codeforces.com/problemset/problem/254/B)|Codeforces|4|\n|<ul><li>- [ ] Done</li></ul>|83|[Hard Work](http://codeforces.com/problemset/problem/61/B)|Codeforces|4|\n|<ul><li>- [ ] Done</li></ul>|84|[Testing Pants for Sadness](http://codeforces.com/problemset/problem/103/A)|Codeforces|3|\n|<ul><li>- [ ] Done</li></ul>|85|[Running Student](http://codeforces.com/problemset/problem/9/B)|Codeforces|4|\n|<ul><li>- [ ] Done</li></ul>|86|[Tournament](http://codeforces.com/problemset/problem/27/B)|Codeforces|3|\n|<ul><li>- [ ] Done</li></ul>|87|[Magical Array](http://codeforces.com/problemset/problem/83/A)|Codeforces|3|\n|<ul><li>- [ ] Done</li></ul>|88|[Help Chef Gerasim](http://codeforces.com/problemset/problem/99/B)|Codeforces|4|\n|<ul><li>- [ ] Done</li></ul>|89|[Convex Shape](http://codeforces.com/problemset/problem/275/B)|Codeforces|4|\n|<ul><li>- [ ] Done</li></ul>|90|[Surrounded](http://codeforces.com/problemset/problem/190/B)|Codeforces|5|\n|<ul><li>- [ ] Done</li></ul>|91|[Spoilt Permutation](http://codeforces.com/problemset/problem/56/B)|Codeforces|4|\n|<ul><li>- [ ] Done</li></ul>|92|[PFAST Inc.](http://codeforces.com/problemset/problem/114/B)|Codeforces|4|\n|<ul><li>- [ ] Done</li></ul>|93|[Martian Dollar](http://codeforces.com/problemset/problem/41/B)|Codeforces|4|\n|<ul><li>- [ ] Done</li></ul>|94|[Bargaining Table](http://codeforces.com/problemset/problem/22/B)|Codeforces|5|\n|<ul><li>- [ ] Done</li></ul>|95|[Sysadmin Bob](http://codeforces.com/problemset/problem/31/B)|Codeforces|4|\n|<ul><li>- [ ] Done</li></ul>|96|[Facetook Priority Wall](http://codeforces.com/problemset/problem/75/B)|Codeforces|4|\n|<ul><li>- [ ] Done</li></ul>|97|[Maximal Area Quadrilateral](http://codeforces.com/problemset/problem/340/B)|Codeforces|4|\n|<ul><li>- [ ] Done</li></ul>|98|[Traffic Lights](http://codeforces.com/problemset/problem/29/B)|Codeforces|4|\n|<ul><li>- [ ] Done</li></ul>|99|[Blog Photo](http://codeforces.com/problemset/problem/53/B)|Codeforces|5|\n|<ul><li>- [ ] Done</li></ul>|100|[Three matrices](http://codeforces.com/problemset/problem/393/B)|Codeforces|7|\n"
  },
  {
    "path": "ladders/06. Codeforces Div. 2, C/README.md",
    "content": "# Ladder Name: 6 - Codeforces Div. 2, C\n## Description\n List of random Codeforces problems, all of them are Div. 2 C problems. The problems are sorted, the most solved problem comes first. This is a good practice for whoever can solve almost all Div. 2 A and B problems, but might have some difficulties while solving the C problems.\n## Difficulty Level: 4\n\n| Checkbox | ID  | Problem Name | Online Judge | Difficulty |\n|---|:---:|:---:|---|---|\n|<ul><li>- [ ] Done</li></ul>|1|[Given Length and Sum of Digits...](http://codeforces.com/problemset/problem/489/C)|Codeforces|1|\n|<ul><li>- [ ] Done</li></ul>|2|[Number of Ways](http://codeforces.com/problemset/problem/466/C)|Codeforces|4|\n|<ul><li>- [ ] Done</li></ul>|3|[Team](http://codeforces.com/problemset/problem/401/C)|Codeforces|4|\n|<ul><li>- [ ] Done</li></ul>|4|[Exams](http://codeforces.com/problemset/problem/479/C)|Codeforces|4|\n|<ul><li>- [ ] Done</li></ul>|5|[Boredom](http://codeforces.com/problemset/problem/455/A)|Codeforces|4|\n|<ul><li>- [ ] Done</li></ul>|6|[Table Decorations](http://codeforces.com/problemset/problem/478/C)|Codeforces|4|\n|<ul><li>- [ ] Done</li></ul>|7|[Beautiful Sets of Points](http://codeforces.com/problemset/problem/268/C)|Codeforces|4|\n|<ul><li>- [ ] Done</li></ul>|8|[k-Tree](http://codeforces.com/problemset/problem/431/C)|Codeforces|4|\n|<ul><li>- [ ] Done</li></ul>|9|[Valera and Tubes ](http://codeforces.com/problemset/problem/441/C)|Codeforces|4|\n|<ul><li>- [ ] Done</li></ul>|10|[Palindrome Transformation](http://codeforces.com/problemset/problem/486/C)|Codeforces|4|\n|<ul><li>- [ ] Done</li></ul>|11|[Fixing Typos](http://codeforces.com/problemset/problem/363/C)|Codeforces|4|\n|<ul><li>- [ ] Done</li></ul>|12|[Hacking Cypher](http://codeforces.com/problemset/problem/490/C)|Codeforces|2|\n|<ul><li>- [ ] Done</li></ul>|13|[Gargari and Bishops](http://codeforces.com/problemset/problem/463/C)|Codeforces|5|\n|<ul><li>- [ ] Done</li></ul>|14|[Pocket Book](http://codeforces.com/problemset/problem/152/C)|Codeforces|4|\n|<ul><li>- [ ] Done</li></ul>|15|[Lucky Sum of Digits](http://codeforces.com/problemset/problem/109/A)|Codeforces|3|\n|<ul><li>- [ ] Done</li></ul>|16|[Arithmetic Progression](http://codeforces.com/problemset/problem/382/C)|Codeforces|4|\n|<ul><li>- [ ] Done</li></ul>|17|[Fox and Box Accumulation](http://codeforces.com/problemset/problem/388/A)|Codeforces|3|\n|<ul><li>- [ ] Done</li></ul>|18|[Hexadecimal's Numbers](http://codeforces.com/problemset/problem/9/C)|Codeforces|2|\n|<ul><li>- [ ] Done</li></ul>|19|[Xenia and Weights](http://codeforces.com/problemset/problem/339/C)|Codeforces|4|\n|<ul><li>- [ ] Done</li></ul>|20|[Bombs](http://codeforces.com/problemset/problem/350/C)|Codeforces|4|\n|<ul><li>- [ ] Done</li></ul>|21|[Pashmak and Buses](http://codeforces.com/problemset/problem/459/C)|Codeforces|5|\n|<ul><li>- [ ] Done</li></ul>|22|[Little Elephant and Problem](http://codeforces.com/problemset/problem/220/A)|Codeforces|4|\n|<ul><li>- [ ] Done</li></ul>|23|[Maze](http://codeforces.com/problemset/problem/377/A)|Codeforces|4|\n|<ul><li>- [ ] Done</li></ul>|24|[Ice Skating](http://codeforces.com/problemset/problem/217/A)|Codeforces|3|\n|<ul><li>- [ ] Done</li></ul>|25|[Hamburgers](http://codeforces.com/problemset/problem/371/C)|Codeforces|4|\n|<ul><li>- [ ] Done</li></ul>|26|[Bear and Prime Numbers](http://codeforces.com/problemset/problem/385/C)|Codeforces|5|\n|<ul><li>- [ ] Done</li></ul>|27|[History](http://codeforces.com/problemset/problem/137/C)|Codeforces|4|\n|<ul><li>- [ ] Done</li></ul>|28|[Checkposts](http://codeforces.com/problemset/problem/427/C)|Codeforces|4|\n|<ul><li>- [ ] Done</li></ul>|29|[Mashmokh and Numbers](http://codeforces.com/problemset/problem/414/A)|Codeforces|3|\n|<ul><li>- [ ] Done</li></ul>|30|[Ladder](http://codeforces.com/problemset/problem/279/C)|Codeforces|4|\n|<ul><li>- [ ] Done</li></ul>|31|[Escape from Stones](http://codeforces.com/problemset/problem/264/A)|Codeforces|3|\n|<ul><li>- [ ] Done</li></ul>|32|[Division into Teams](http://codeforces.com/problemset/problem/149/C)|Codeforces|4|\n|<ul><li>- [ ] Done</li></ul>|33|[Barcode](http://codeforces.com/problemset/problem/225/C)|Codeforces|4|\n|<ul><li>- [ ] Done</li></ul>|34|[Stripe](http://codeforces.com/problemset/problem/18/C)|Codeforces|3|\n|<ul><li>- [ ] Done</li></ul>|35|[Mafia](http://codeforces.com/problemset/problem/348/A)|Codeforces|4|\n|<ul><li>- [ ] Done</li></ul>|36|[Cows and Sequence](http://codeforces.com/problemset/problem/283/A)|Codeforces|4|\n|<ul><li>- [ ] Done</li></ul>|37|[To Add or Not to Add](http://codeforces.com/problemset/problem/231/C)|Codeforces|4|\n|<ul><li>- [ ] Done</li></ul>|38|[Xor-tree](http://codeforces.com/problemset/problem/429/A)|Codeforces|3|\n|<ul><li>- [ ] Done</li></ul>|39|[LCM Challenge](http://codeforces.com/problemset/problem/235/A)|Codeforces|4|\n|<ul><li>- [ ] Done</li></ul>|40|[Rational Resistance](http://codeforces.com/problemset/problem/343/A)|Codeforces|4|\n|<ul><li>- [ ] Done</li></ul>|41|[Points on Line](http://codeforces.com/problemset/problem/251/A)|Codeforces|3|\n|<ul><li>- [ ] Done</li></ul>|42|[No to Palindromes!](http://codeforces.com/problemset/problem/464/A)|Codeforces|4|\n|<ul><li>- [ ] Done</li></ul>|43|[Magic Formulas](http://codeforces.com/problemset/problem/424/C)|Codeforces|4|\n|<ul><li>- [ ] Done</li></ul>|44|[Beautiful Numbers](http://codeforces.com/problemset/problem/300/C)|Codeforces|4|\n|<ul><li>- [ ] Done</li></ul>|45|[Quiz](http://codeforces.com/problemset/problem/337/C)|Codeforces|4|\n|<ul><li>- [ ] Done</li></ul>|46|[Replacement](http://codeforces.com/problemset/problem/135/A)|Codeforces|3|\n|<ul><li>- [ ] Done</li></ul>|47|[Vasya and Robot](http://codeforces.com/problemset/problem/354/A)|Codeforces|4|\n|<ul><li>- [ ] Done</li></ul>|48|[Captain Marmot](http://codeforces.com/problemset/problem/474/C)|Codeforces|4|\n|<ul><li>- [ ] Done</li></ul>|49|[Win or Freeze](http://codeforces.com/problemset/problem/150/A)|Codeforces|4|\n|<ul><li>- [ ] Done</li></ul>|50|[Matrix](http://codeforces.com/problemset/problem/364/A)|Codeforces|4|\n|<ul><li>- [ ] Done</li></ul>|51|[Little Frog](http://codeforces.com/problemset/problem/53/C)|Codeforces|2|\n|<ul><li>- [ ] Done</li></ul>|52|[Lucky Sum](http://codeforces.com/problemset/problem/121/A)|Codeforces|3|\n|<ul><li>- [ ] Done</li></ul>|53|[Fight the Monster](http://codeforces.com/problemset/problem/487/A)|Codeforces|4|\n|<ul><li>- [ ] Done</li></ul>|54|[Triangle](http://codeforces.com/problemset/problem/407/A)|Codeforces|4|\n|<ul><li>- [ ] Done</li></ul>|55|[View Angle](http://codeforces.com/problemset/problem/257/C)|Codeforces|4|\n|<ul><li>- [ ] Done</li></ul>|56|[King's Path](http://codeforces.com/problemset/problem/242/C)|Codeforces|4|\n|<ul><li>- [ ] Done</li></ul>|57|[Round Table Knights](http://codeforces.com/problemset/problem/71/C)|Codeforces|4|\n|<ul><li>- [ ] Done</li></ul>|58|[Purification](http://codeforces.com/problemset/problem/329/A)|Codeforces|4|\n|<ul><li>- [ ] Done</li></ul>|59|[Maxim and Discounts](http://codeforces.com/problemset/problem/261/A)|Codeforces|3|\n|<ul><li>- [ ] Done</li></ul>|60|[The Closest Pair](http://codeforces.com/problemset/problem/311/A)|Codeforces|3|\n|<ul><li>- [ ] Done</li></ul>|61|[Divisible by Seven](http://codeforces.com/problemset/problem/375/A)|Codeforces|4|\n|<ul><li>- [ ] Done</li></ul>|62|[Hometask](http://codeforces.com/problemset/problem/154/A)|Codeforces|4|\n|<ul><li>- [ ] Done</li></ul>|63|[Little Elephant and Interval](http://codeforces.com/problemset/problem/204/A)|Codeforces|4|\n|<ul><li>- [ ] Done</li></ul>|64|[Dorm Water Supply](http://codeforces.com/problemset/problem/107/A)|Codeforces|3|\n|<ul><li>- [ ] Done</li></ul>|65|[Shaass and Lights](http://codeforces.com/problemset/problem/294/C)|Codeforces|5|\n|<ul><li>- [ ] Done</li></ul>|66|[Prime Number](http://codeforces.com/problemset/problem/359/C)|Codeforces|5|\n|<ul><li>- [ ] Done</li></ul>|67|[The Brand New Function](http://codeforces.com/problemset/problem/243/A)|Codeforces|4|\n|<ul><li>- [ ] Done</li></ul>|68|[About Bacteria](http://codeforces.com/problemset/problem/198/A)|Codeforces|4|\n|<ul><li>- [ ] Done</li></ul>|69|[Malek Dance Club](http://codeforces.com/problemset/problem/319/A)|Codeforces|4|\n|<ul><li>- [ ] Done</li></ul>|70|[Dima and Containers](http://codeforces.com/problemset/problem/358/C)|Codeforces|5|\n|<ul><li>- [ ] Done</li></ul>|71|[Trains](http://codeforces.com/problemset/problem/87/A)|Codeforces|4|\n|<ul><li>- [ ] Done</li></ul>|72|[Almost Arithmetical Progression](http://codeforces.com/problemset/problem/255/C)|Codeforces|4|\n|<ul><li>- [ ] Done</li></ul>|73|[Newspaper Headline](http://codeforces.com/problemset/problem/91/A)|Codeforces|4|\n|<ul><li>- [ ] Done</li></ul>|74|[Inna and Dima](http://codeforces.com/problemset/problem/374/C)|Codeforces|4|\n|<ul><li>- [ ] Done</li></ul>|75|[Hiring Staff](http://codeforces.com/problemset/problem/216/C)|Codeforces|5|\n|<ul><li>- [ ] Done</li></ul>|76|[STL](http://codeforces.com/problemset/problem/190/C)|Codeforces|4|\n|<ul><li>- [ ] Done</li></ul>|77|[Prime Permutation](http://codeforces.com/problemset/problem/123/A)|Codeforces|4|\n|<ul><li>- [ ] Done</li></ul>|78|[Four Segments](http://codeforces.com/problemset/problem/14/C)|Codeforces|5|\n|<ul><li>- [ ] Done</li></ul>|79|[Fire Again](http://codeforces.com/problemset/problem/35/C)|Codeforces|4|\n|<ul><li>- [ ] Done</li></ul>|80|[Below the Diagonal](http://codeforces.com/problemset/problem/266/C)|Codeforces|6|\n|<ul><li>- [ ] Done</li></ul>|81|[Mail Stamps](http://codeforces.com/problemset/problem/29/C)|Codeforces|4|\n|<ul><li>- [ ] Done</li></ul>|82|[Grammar Lessons](http://codeforces.com/problemset/problem/113/A)|Codeforces|4|\n|<ul><li>- [ ] Done</li></ul>|83|[Bracket Sequence](http://codeforces.com/problemset/problem/223/A)|Codeforces|4|\n|<ul><li>- [ ] Done</li></ul>|84|[Heroes](http://codeforces.com/problemset/problem/77/A)|Codeforces|4|\n|<ul><li>- [ ] Done</li></ul>|85|[Literature Lesson](http://codeforces.com/problemset/problem/138/A)|Codeforces|4|\n|<ul><li>- [ ] Done</li></ul>|86|[Reducing Fractions](http://codeforces.com/problemset/problem/222/C)|Codeforces|5|\n|<ul><li>- [ ] Done</li></ul>|87|[Game](http://codeforces.com/problemset/problem/213/A)|Codeforces|4|\n|<ul><li>- [ ] Done</li></ul>|88|[Cutting Figure](http://codeforces.com/problemset/problem/193/A)|Codeforces|4|\n|<ul><li>- [ ] Done</li></ul>|89|[Trees](http://codeforces.com/problemset/problem/58/C)|Codeforces|4|\n|<ul><li>- [ ] Done</li></ul>|90|[Hockey](http://codeforces.com/problemset/problem/95/A)|Codeforces|4|\n|<ul><li>- [ ] Done</li></ul>|91|[Schedule](http://codeforces.com/problemset/problem/31/C)|Codeforces|4|\n|<ul><li>- [ ] Done</li></ul>|92|[Rectangle Puzzle](http://codeforces.com/problemset/problem/280/A)|Codeforces|5|\n|<ul><li>- [ ] Done</li></ul>|93|[Disposition](http://codeforces.com/problemset/problem/49/C)|Codeforces|4|\n|<ul><li>- [ ] Done</li></ul>|94|[Flea](http://codeforces.com/problemset/problem/32/C)|Codeforces|4|\n|<ul><li>- [ ] Done</li></ul>|95|[Help Victoria the Wise](http://codeforces.com/problemset/problem/98/A)|Codeforces|4|\n|<ul><li>- [ ] Done</li></ul>|96|[Corporation Mail](http://codeforces.com/problemset/problem/56/C)|Codeforces|4|\n|<ul><li>- [ ] Done</li></ul>|97|[Optimal Sum](http://codeforces.com/problemset/problem/182/C)|Codeforces|5|\n|<ul><li>- [ ] Done</li></ul>|98|[On Number of Decompositions into Multipliers](http://codeforces.com/problemset/problem/396/A)|Codeforces|7|\n|<ul><li>- [ ] Done</li></ul>|99|[Blocked Points](http://codeforces.com/problemset/problem/392/A)|Codeforces|7|\n|<ul><li>- [ ] Done</li></ul>|100|[Crossword](http://codeforces.com/problemset/problem/47/C)|Codeforces|5|\n"
  },
  {
    "path": "ladders/07. Codeforces Div. 2, D/README.md",
    "content": "# Ladder Name: 7 - Codeforces Div. 2, D\n## Description\n List of random Codeforces problems, all of them are Div. 2 D problems. The problems are sorted, the most solved problem comes first. This is a good practice for whoever can solve almost all Div. 2 A, B and C problems, but might have some difficulties while solving the C problems.\n## Difficulty Level: 5\n\n| Checkbox | ID  | Problem Name | Online Judge | Difficulty |\n|---|:---:|:---:|---|---|\n|<ul><li>- [ ] Done</li></ul>|1|[Flowers](http://codeforces.com/problemset/problem/474/D)|Codeforces|1|\n|<ul><li>- [ ] Done</li></ul>|2|[Prizes, Prizes, more Prizes](http://codeforces.com/problemset/problem/208/D)|Codeforces|3|\n|<ul><li>- [ ] Done</li></ul>|3|[Xenia and Bit Operations](http://codeforces.com/problemset/problem/339/D)|Codeforces|4|\n|<ul><li>- [ ] Done</li></ul>|4|[Vasya and Chess](http://codeforces.com/problemset/problem/493/D)|Codeforces|4|\n|<ul><li>- [ ] Done</li></ul>|5|[Mashmokh and ACM](http://codeforces.com/problemset/problem/414/B)|Codeforces|3|\n|<ul><li>- [ ] Done</li></ul>|6|[Multiplication Table](http://codeforces.com/problemset/problem/448/D)|Codeforces|5|\n|<ul><li>- [ ] Done</li></ul>|7|[Unbearable Controversy of Being](http://codeforces.com/problemset/problem/489/D)|Codeforces|3|\n|<ul><li>- [ ] Done</li></ul>|8|[Caesar's Legions](http://codeforces.com/problemset/problem/118/D)|Codeforces|4|\n|<ul><li>- [ ] Done</li></ul>|9|[Colorful Graph](http://codeforces.com/problemset/problem/246/D)|Codeforces|4|\n|<ul><li>- [ ] Done</li></ul>|10|[Little Girl and Maximum XOR](http://codeforces.com/problemset/problem/276/D)|Codeforces|4|\n|<ul><li>- [ ] Done</li></ul>|11|[Common Divisors](http://codeforces.com/problemset/problem/182/D)|Codeforces|4|\n|<ul><li>- [ ] Done</li></ul>|12|[Magic Box](http://codeforces.com/problemset/problem/231/D)|Codeforces|4|\n|<ul><li>- [ ] Done</li></ul>|13|[Good Sequences](http://codeforces.com/problemset/problem/264/B)|Codeforces|4|\n|<ul><li>- [ ] Done</li></ul>|14|[Password](http://codeforces.com/problemset/problem/126/B)|Codeforces|4|\n|<ul><li>- [ ] Done</li></ul>|15|[Greg and Graph](http://codeforces.com/problemset/problem/295/B)|Codeforces|4|\n|<ul><li>- [ ] Done</li></ul>|16|[Working out](http://codeforces.com/problemset/problem/429/B)|Codeforces|4|\n|<ul><li>- [ ] Done</li></ul>|17|[Count Good Substrings](http://codeforces.com/problemset/problem/451/D)|Codeforces|5|\n|<ul><li>- [ ] Done</li></ul>|18|[Good Substrings](http://codeforces.com/problemset/problem/271/D)|Codeforces|5|\n|<ul><li>- [ ] Done</li></ul>|19|[Long Path](http://codeforces.com/problemset/problem/407/B)|Codeforces|4|\n|<ul><li>- [ ] Done</li></ul>|20|[Maximum Value](http://codeforces.com/problemset/problem/484/B)|Codeforces|5|\n|<ul><li>- [ ] Done</li></ul>|21|[Greenhouse Effect](http://codeforces.com/problemset/problem/269/B)|Codeforces|4|\n|<ul><li>- [ ] Done</li></ul>|22|[Red-Green Towers](http://codeforces.com/problemset/problem/478/D)|Codeforces|5|\n|<ul><li>- [ ] Done</li></ul>|23|[Maximum Submatrix 2](http://codeforces.com/problemset/problem/375/B)|Codeforces|4|\n|<ul><li>- [ ] Done</li></ul>|24|[Cow Program](http://codeforces.com/problemset/problem/283/B)|Codeforces|4|\n|<ul><li>- [ ] Done</li></ul>|25|[Biridian Forest](http://codeforces.com/problemset/problem/329/B)|Codeforces|4|\n|<ul><li>- [ ] Done</li></ul>|26|[Andrey and Problem](http://codeforces.com/problemset/problem/442/B)|Codeforces|4|\n|<ul><li>- [ ] Done</li></ul>|27|[DZY Loves Modification](http://codeforces.com/problemset/problem/446/B)|Codeforces|5|\n|<ul><li>- [ ] Done</li></ul>|28|[Zero Tree](http://codeforces.com/problemset/problem/274/B)|Codeforces|4|\n|<ul><li>- [ ] Done</li></ul>|29|[Prefixes and Suffixes](http://codeforces.com/problemset/problem/432/D)|Codeforces|5|\n|<ul><li>- [ ] Done</li></ul>|30|[Queue](http://codeforces.com/problemset/problem/91/B)|Codeforces|4|\n|<ul><li>- [ ] Done</li></ul>|31|[Chips](http://codeforces.com/problemset/problem/333/B)|Codeforces|4|\n|<ul><li>- [ ] Done</li></ul>|32|[Valid Sets](http://codeforces.com/problemset/problem/486/D)|Codeforces|5|\n|<ul><li>- [ ] Done</li></ul>|33|[Pair of Numbers](http://codeforces.com/problemset/problem/359/D)|Codeforces|5|\n|<ul><li>- [ ] Done</li></ul>|34|[Planets](http://codeforces.com/problemset/problem/229/B)|Codeforces|4|\n|<ul><li>- [ ] Done</li></ul>|35|[Queue](http://codeforces.com/problemset/problem/353/D)|Codeforces|5|\n|<ul><li>- [ ] Done</li></ul>|36|[Petya and Divisors](http://codeforces.com/problemset/problem/111/B)|Codeforces|4|\n|<ul><li>- [ ] Done</li></ul>|37|[Obsessive String](http://codeforces.com/problemset/problem/494/B)|Codeforces|5|\n|<ul><li>- [ ] Done</li></ul>|38|[Dima and Bacteria](http://codeforces.com/problemset/problem/400/D)|Codeforces|5|\n|<ul><li>- [ ] Done</li></ul>|39|[Psychos in a Line](http://codeforces.com/problemset/problem/319/B)|Codeforces|4|\n|<ul><li>- [ ] Done</li></ul>|40|[Ciel and Duel](http://codeforces.com/problemset/problem/321/B)|Codeforces|5|\n|<ul><li>- [ ] Done</li></ul>|41|[Falling Anvils](http://codeforces.com/problemset/problem/77/B)|Codeforces|4|\n|<ul><li>- [ ] Done</li></ul>|42|[Hit Ball](http://codeforces.com/problemset/problem/203/D)|Codeforces|4|\n|<ul><li>- [ ] Done</li></ul>|43|[Toy Sum](http://codeforces.com/problemset/problem/405/D)|Codeforces|4|\n|<ul><li>- [ ] Done</li></ul>|44|[Lucky Common Subsequence](http://codeforces.com/problemset/problem/346/B)|Codeforces|5|\n|<ul><li>- [ ] Done</li></ul>|45|[Two Paths](http://codeforces.com/problemset/problem/14/D)|Codeforces|5|\n|<ul><li>- [ ] Done</li></ul>|46|[Help General](http://codeforces.com/problemset/problem/142/B)|Codeforces|4|\n|<ul><li>- [ ] Done</li></ul>|47|[Dima and Two Sequences](http://codeforces.com/problemset/problem/272/D)|Codeforces|4|\n|<ul><li>- [ ] Done</li></ul>|48|[How many trees?](http://codeforces.com/problemset/problem/9/D)|Codeforces|5|\n|<ul><li>- [ ] Done</li></ul>|49|[Lucky Number 2](http://codeforces.com/problemset/problem/145/B)|Codeforces|5|\n|<ul><li>- [ ] Done</li></ul>|50|[Cinema](http://codeforces.com/problemset/problem/234/D)|Codeforces|6|\n|<ul><li>- [ ] Done</li></ul>|51|[Wizards and Huge Prize](http://codeforces.com/problemset/problem/167/B)|Codeforces|5|\n|<ul><li>- [ ] Done</li></ul>|52|[Apple Tree](http://codeforces.com/problemset/problem/348/B)|Codeforces|5|\n|<ul><li>- [ ] Done</li></ul>|53|[Yaroslav and Time](http://codeforces.com/problemset/problem/301/B)|Codeforces|5|\n|<ul><li>- [ ] Done</li></ul>|54|[Numbers](http://codeforces.com/problemset/problem/213/B)|Codeforces|5|\n|<ul><li>- [ ] Done</li></ul>|55|[Treasure Island](http://codeforces.com/problemset/problem/106/D)|Codeforces|4|\n|<ul><li>- [ ] Done</li></ul>|56|[Book of Evil](http://codeforces.com/problemset/problem/337/D)|Codeforces|5|\n|<ul><li>- [ ] Done</li></ul>|57|[Sereja and Periods](http://codeforces.com/problemset/problem/314/B)|Codeforces|5|\n|<ul><li>- [ ] Done</li></ul>|58|[Infinite Maze](http://codeforces.com/problemset/problem/196/B)|Codeforces|5|\n|<ul><li>- [ ] Done</li></ul>|59|[Playing with Permutations](http://codeforces.com/problemset/problem/251/B)|Codeforces|5|\n|<ul><li>- [ ] Done</li></ul>|60|[Doctor](http://codeforces.com/problemset/problem/83/B)|Codeforces|4|\n|<ul><li>- [ ] Done</li></ul>|61|[Animals](http://codeforces.com/problemset/problem/35/D)|Codeforces|4|\n|<ul><li>- [ ] Done</li></ul>|62|[Mushroom Scientists](http://codeforces.com/problemset/problem/185/B)|Codeforces|4|\n|<ul><li>- [ ] Done</li></ul>|63|[Tennis Game](http://codeforces.com/problemset/problem/496/D)|Codeforces|4|\n|<ul><li>- [ ] Done</li></ul>|64|[Buses](http://codeforces.com/problemset/problem/101/B)|Codeforces|4|\n|<ul><li>- [ ] Done</li></ul>|65|[String](http://codeforces.com/problemset/problem/128/B)|Codeforces|5|\n|<ul><li>- [ ] Done</li></ul>|66|[Shifting](http://codeforces.com/problemset/problem/286/B)|Codeforces|5|\n|<ul><li>- [ ] Done</li></ul>|67|[Boring Partition](http://codeforces.com/problemset/problem/238/B)|Codeforces|4|\n|<ul><li>- [ ] Done</li></ul>|68|[Analyzing Polyline](http://codeforces.com/problemset/problem/195/D)|Codeforces|5|\n|<ul><li>- [ ] Done</li></ul>|69|[Vasya and Types](http://codeforces.com/problemset/problem/87/B)|Codeforces|4|\n|<ul><li>- [ ] Done</li></ul>|70|[Lizards and Basements 2](http://codeforces.com/problemset/problem/6/D)|Codeforces|6|\n|<ul><li>- [ ] Done</li></ul>|71|[Constellation](http://codeforces.com/problemset/problem/32/D)|Codeforces|5|\n|<ul><li>- [ ] Done</li></ul>|72|[Pawn](http://codeforces.com/problemset/problem/41/D)|Codeforces|5|\n|<ul><li>- [ ] Done</li></ul>|73|[Journey](http://codeforces.com/problemset/problem/43/D)|Codeforces|5|\n|<ul><li>- [ ] Done</li></ul>|74|[Tanya and Password](http://codeforces.com/problemset/problem/508/D)|Codeforces|7|\n|<ul><li>- [ ] Done</li></ul>|75|[Demonstration](http://codeforces.com/problemset/problem/191/B)|Codeforces|4|\n|<ul><li>- [ ] Done</li></ul>|76|[Big Maximum Sum](http://codeforces.com/problemset/problem/75/D)|Codeforces|5|\n|<ul><li>- [ ] Done</li></ul>|77|[The Child and Zoo](http://codeforces.com/problemset/problem/437/D)|Codeforces|4|\n|<ul><li>- [ ] Done</li></ul>|78|[Mr. Bender and Square](http://codeforces.com/problemset/problem/255/D)|Codeforces|4|\n|<ul><li>- [ ] Done</li></ul>|79|[Special Grid](http://codeforces.com/problemset/problem/435/D)|Codeforces|5|\n|<ul><li>- [ ] Done</li></ul>|80|[Name That Tune](http://codeforces.com/problemset/problem/498/B)|Codeforces|6|\n|<ul><li>- [ ] Done</li></ul>|81|[Ring Road 2](http://codeforces.com/problemset/problem/27/D)|Codeforces|5|\n|<ul><li>- [ ] Done</li></ul>|82|[Russian Roulette](http://codeforces.com/problemset/problem/103/C)|Codeforces|5|\n|<ul><li>- [ ] Done</li></ul>|83|[Snake](http://codeforces.com/problemset/problem/225/D)|Codeforces|6|\n|<ul><li>- [ ] Done</li></ul>|84|[Upgrading Array](http://codeforces.com/problemset/problem/402/D)|Codeforces|5|\n|<ul><li>- [ ] Done</li></ul>|85|[Edges in MST](http://codeforces.com/problemset/problem/160/D)|Codeforces|6|\n|<ul><li>- [ ] Done</li></ul>|86|[Fools and Foolproof Roads](http://codeforces.com/problemset/problem/362/D)|Codeforces|6|\n|<ul><li>- [ ] Done</li></ul>|87|[End of Exams](http://codeforces.com/problemset/problem/93/B)|Codeforces|5|\n|<ul><li>- [ ] Done</li></ul>|88|[Restoring Numbers](http://codeforces.com/problemset/problem/509/D)|Codeforces|7|\n|<ul><li>- [ ] Done</li></ul>|89|[Cats Transport](http://codeforces.com/problemset/problem/311/B)|Codeforces|7|\n|<ul><li>- [ ] Done</li></ul>|90|[Broken Monitor](http://codeforces.com/problemset/problem/370/D)|Codeforces|5|\n|<ul><li>- [ ] Done</li></ul>|91|[The Minimum Number of Variables](http://codeforces.com/problemset/problem/279/D)|Codeforces|6|\n|<ul><li>- [ ] Done</li></ul>|92|[Volcanoes](http://codeforces.com/problemset/problem/383/B)|Codeforces|7|\n|<ul><li>- [ ] Done</li></ul>|93|[Widget Library](http://codeforces.com/problemset/problem/89/B)|Codeforces|5|\n|<ul><li>- [ ] Done</li></ul>|94|[Misha and Permutations Summation](http://codeforces.com/problemset/problem/501/D)|Codeforces|4|\n|<ul><li>- [ ] Done</li></ul>|95|[BerDonalds](http://codeforces.com/problemset/problem/266/D)|Codeforces|7|\n|<ul><li>- [ ] Done</li></ul>|96|[Tower of Hanoi](http://codeforces.com/problemset/problem/392/B)|Codeforces|8|\n|<ul><li>- [ ] Done</li></ul>|97|[Mr. Kitayuta's Technology](http://codeforces.com/problemset/problem/505/D)|Codeforces|5|\n|<ul><li>- [ ] Done</li></ul>|98|[Shoe Store](http://codeforces.com/problemset/problem/166/D)|Codeforces|7|\n|<ul><li>- [ ] Done</li></ul>|99|[Inna and Sweet Matrix](http://codeforces.com/problemset/problem/390/D)|Codeforces|8|\n|<ul><li>- [ ] Done</li></ul>|100|[Help King](http://codeforces.com/problemset/problem/98/B)|Codeforces|9|\n"
  },
  {
    "path": "ladders/08. Codeforces Div. 2, E/README.md",
    "content": "# Ladder Name: 8 - Codeforces Div. 2, E\n## Description\n List of random Codeforces problems, all of them are Div. 2 E problems. The problems are sorted, the most solved problem comes first. This is a good practice for whoever can solve almost all Div. 2 A, B, C and D problems, but might have some difficulties while solving the C problems.\n## Difficulty Level: 6\n\n| Checkbox | ID  | Problem Name | Online Judge | Difficulty |\n|---|:---:|:---:|---|---|\n|<ul><li>- [ ] Done</li></ul>|1|[Pashmak and Graph](http://codeforces.com/problemset/problem/459/E)|Codeforces|5|\n|<ul><li>- [ ] Done</li></ul>|2|[Civilization](http://codeforces.com/problemset/problem/455/C)|Codeforces|5|\n|<ul><li>- [ ] Done</li></ul>|3|[Sereja and Brackets](http://codeforces.com/problemset/problem/380/C)|Codeforces|5|\n|<ul><li>- [ ] Done</li></ul>|4|[Propagating tree](http://codeforces.com/problemset/problem/383/C)|Codeforces|5|\n|<ul><li>- [ ] Done</li></ul>|5|[XOR on Segment](http://codeforces.com/problemset/problem/242/E)|Codeforces|5|\n|<ul><li>- [ ] Done</li></ul>|6|[Yet Another Task with Queens](http://codeforces.com/problemset/problem/131/E)|Codeforces|6|\n|<ul><li>- [ ] Done</li></ul>|7|[Mashmokh and Reverse Operation](http://codeforces.com/problemset/problem/414/C)|Codeforces|5|\n|<ul><li>- [ ] Done</li></ul>|8|[Choosing Balls](http://codeforces.com/problemset/problem/264/C)|Codeforces|5|\n|<ul><li>- [ ] Done</li></ul>|9|[Subsegments](http://codeforces.com/problemset/problem/69/E)|Codeforces|4|\n|<ul><li>- [ ] Done</li></ul>|10|[Sausage Maximization](http://codeforces.com/problemset/problem/282/E)|Codeforces|5|\n|<ul><li>- [ ] Done</li></ul>|11|[Games with Rectangle](http://codeforces.com/problemset/problem/128/C)|Codeforces|5|\n|<ul><li>- [ ] Done</li></ul>|12|[Riding in a Lift](http://codeforces.com/problemset/problem/479/E)|Codeforces|5|\n|<ul><li>- [ ] Done</li></ul>|13|[Fools and Roads](http://codeforces.com/problemset/problem/191/C)|Codeforces|4|\n|<ul><li>- [ ] Done</li></ul>|14|[Enemy is weak](http://codeforces.com/problemset/problem/61/E)|Codeforces|5|\n|<ul><li>- [ ] Done</li></ul>|15|[Cipher](http://codeforces.com/problemset/problem/156/C)|Codeforces|5|\n|<ul><li>- [ ] Done</li></ul>|16|[Flawed Flow](http://codeforces.com/problemset/problem/269/C)|Codeforces|5|\n|<ul><li>- [ ] Done</li></ul>|17|[Greg and Friends](http://codeforces.com/problemset/problem/295/C)|Codeforces|5|\n|<ul><li>- [ ] Done</li></ul>|18|[Fish](http://codeforces.com/problemset/problem/16/E)|Codeforces|6|\n|<ul><li>- [ ] Done</li></ul>|19|[Main Sequence](http://codeforces.com/problemset/problem/286/C)|Codeforces|5|\n|<ul><li>- [ ] Done</li></ul>|20|[Jzzhu and Apples](http://codeforces.com/problemset/problem/449/C)|Codeforces|7|\n|<ul><li>- [ ] Done</li></ul>|21|[Arthur and Brackets](http://codeforces.com/problemset/problem/508/E)|Codeforces|6|\n|<ul><li>- [ ] Done</li></ul>|22|[Little Elephant and LCM](http://codeforces.com/problemset/problem/258/C)|Codeforces|5|\n|<ul><li>- [ ] Done</li></ul>|23|[Prefix Product Sequence](http://codeforces.com/problemset/problem/487/C)|Codeforces|6|\n|<ul><li>- [ ] Done</li></ul>|24|[Lucky Subsequence](http://codeforces.com/problemset/problem/145/C)|Codeforces|5|\n|<ul><li>- [ ] Done</li></ul>|25|[Interesting Game](http://codeforces.com/problemset/problem/87/C)|Codeforces|5|\n|<ul><li>- [ ] Done</li></ul>|26|[Zero-One](http://codeforces.com/problemset/problem/135/C)|Codeforces|4|\n|<ul><li>- [ ] Done</li></ul>|27|[Divisors](http://codeforces.com/problemset/problem/448/E)|Codeforces|6|\n|<ul><li>- [ ] Done</li></ul>|28|[Game on Tree](http://codeforces.com/problemset/problem/280/C)|Codeforces|6|\n|<ul><li>- [ ] Done</li></ul>|29|[Last Chance](http://codeforces.com/problemset/problem/137/E)|Codeforces|5|\n|<ul><li>- [ ] Done</li></ul>|30|[Build String](http://codeforces.com/problemset/problem/237/E)|Codeforces|5|\n|<ul><li>- [ ] Done</li></ul>|31|[Number Transformation II](http://codeforces.com/problemset/problem/346/C)|Codeforces|6|\n|<ul><li>- [ ] Done</li></ul>|32|[Double Profiles](http://codeforces.com/problemset/problem/154/C)|Codeforces|6|\n|<ul><li>- [ ] Done</li></ul>|33|[Number Transformation](http://codeforces.com/problemset/problem/251/C)|Codeforces|5|\n|<ul><li>- [ ] Done</li></ul>|34|[Prefix Product Sequence](http://codeforces.com/problemset/problem/488/E)|Codeforces|6|\n|<ul><li>- [ ] Done</li></ul>|35|[DZY Loves Fibonacci Numbers](http://codeforces.com/problemset/problem/446/C)|Codeforces|7|\n|<ul><li>- [ ] Done</li></ul>|36|[DZY Loves Colors](http://codeforces.com/problemset/problem/444/C)|Codeforces|6|\n|<ul><li>- [ ] Done</li></ul>|37|[Little Elephant and Shifts](http://codeforces.com/problemset/problem/220/C)|Codeforces|5|\n|<ul><li>- [ ] Done</li></ul>|38|[Inna and Binary Logic](http://codeforces.com/problemset/problem/400/E)|Codeforces|5|\n|<ul><li>- [ ] Done</li></ul>|39|[Martian Strings](http://codeforces.com/problemset/problem/149/E)|Codeforces|6|\n|<ul><li>- [ ] Done</li></ul>|40|[Devu and Birthday Celebration](http://codeforces.com/problemset/problem/439/E)|Codeforces|6|\n|<ul><li>- [ ] Done</li></ul>|41|[Iahub and Permutations](http://codeforces.com/problemset/problem/340/E)|Codeforces|5|\n|<ul><li>- [ ] Done</li></ul>|42|[Hiking](http://codeforces.com/problemset/problem/489/E)|Codeforces|7|\n|<ul><li>- [ ] Done</li></ul>|43|[Splitting the Uniqueness](http://codeforces.com/problemset/problem/297/C)|Codeforces|7|\n|<ul><li>- [ ] Done</li></ul>|44|[George and Cards](http://codeforces.com/problemset/problem/387/E)|Codeforces|6|\n|<ul><li>- [ ] Done</li></ul>|45|[Dima and Magic Guitar](http://codeforces.com/problemset/problem/366/E)|Codeforces|5|\n|<ul><li>- [ ] Done</li></ul>|46|[Ski Base](http://codeforces.com/problemset/problem/91/C)|Codeforces|5|\n|<ul><li>- [ ] Done</li></ul>|47|[Wrong Floyd](http://codeforces.com/problemset/problem/350/E)|Codeforces|5|\n|<ul><li>- [ ] Done</li></ul>|48|[Empire Strikes Back](http://codeforces.com/problemset/problem/300/E)|Codeforces|6|\n|<ul><li>- [ ] Done</li></ul>|49|[Mushroom Gnomes - 2](http://codeforces.com/problemset/problem/138/C)|Codeforces|5|\n|<ul><li>- [ ] Done</li></ul>|50|[Parking Lot](http://codeforces.com/problemset/problem/219/E)|Codeforces|6|\n|<ul><li>- [ ] Done</li></ul>|51|[Xenia and Tree](http://codeforces.com/problemset/problem/342/E)|Codeforces|7|\n|<ul><li>- [ ] Done</li></ul>|52|[Cactus](http://codeforces.com/problemset/problem/231/E)|Codeforces|6|\n|<ul><li>- [ ] Done</li></ul>|53|[Anniversary](http://codeforces.com/problemset/problem/226/C)|Codeforces|7|\n|<ul><li>- [ ] Done</li></ul>|54|[Hack it!](http://codeforces.com/problemset/problem/468/C)|Codeforces|7|\n|<ul><li>- [ ] Done</li></ul>|55|[Graph Reconstruction](http://codeforces.com/problemset/problem/329/C)|Codeforces|6|\n|<ul><li>- [ ] Done</li></ul>|56|[Help Caretaker](http://codeforces.com/problemset/problem/142/C)|Codeforces|6|\n|<ul><li>- [ ] Done</li></ul>|57|[Martian Luck](http://codeforces.com/problemset/problem/216/E)|Codeforces|5|\n|<ul><li>- [ ] Done</li></ul>|58|[Collisions](http://codeforces.com/problemset/problem/34/E)|Codeforces|6|\n|<ul><li>- [ ] Done</li></ul>|59|[Chip Play](http://codeforces.com/problemset/problem/89/C)|Codeforces|5|\n|<ul><li>- [ ] Done</li></ul>|60|[Beautiful Set](http://codeforces.com/problemset/problem/364/C)|Codeforces|6|\n|<ul><li>- [ ] Done</li></ul>|61|[Strictly Positive Matrix](http://codeforces.com/problemset/problem/402/E)|Codeforces|5|\n|<ul><li>- [ ] Done</li></ul>|62|[Square Tiling](http://codeforces.com/problemset/problem/432/E)|Codeforces|7|\n|<ul><li>- [ ] Done</li></ul>|63|[Game](http://codeforces.com/problemset/problem/277/C)|Codeforces|7|\n|<ul><li>- [ ] Done</li></ul>|64|[Dreamoon and Strings](http://codeforces.com/problemset/problem/476/E)|Codeforces|6|\n|<ul><li>- [ ] Done</li></ul>|65|[Counter Attack](http://codeforces.com/problemset/problem/190/E)|Codeforces|7|\n|<ul><li>- [ ] Done</li></ul>|66|[Three Horses](http://codeforces.com/problemset/problem/271/E)|Codeforces|6|\n|<ul><li>- [ ] Done</li></ul>|67|[Playing with String](http://codeforces.com/problemset/problem/305/E)|Codeforces|7|\n|<ul><li>- [ ] Done</li></ul>|68|[Colorado Potato Beetle](http://codeforces.com/problemset/problem/243/C)|Codeforces|6|\n|<ul><li>- [ ] Done</li></ul>|69|[Three Swaps](http://codeforces.com/problemset/problem/339/E)|Codeforces|9|\n|<ul><li>- [ ] Done</li></ul>|70|[Cyclical Quest](http://codeforces.com/problemset/problem/235/C)|Codeforces|8|\n|<ul><li>- [ ] Done</li></ul>|71|[Petya and Pipes](http://codeforces.com/problemset/problem/362/E)|Codeforces|7|\n|<ul><li>- [ ] Done</li></ul>|72|[Common ancestor](http://codeforces.com/problemset/problem/49/E)|Codeforces|7|\n|<ul><li>- [ ] Done</li></ul>|73|[Neatness](http://codeforces.com/problemset/problem/359/E)|Codeforces|8|\n|<ul><li>- [ ] Done</li></ul>|74|[Yaroslav and Algorithm](http://codeforces.com/problemset/problem/301/C)|Codeforces|7|\n|<ul><li>- [ ] Done</li></ul>|75|[Strange Sorting](http://codeforces.com/problemset/problem/484/C)|Codeforces|8|\n|<ul><li>- [ ] Done</li></ul>|76|[Helping People](http://codeforces.com/problemset/problem/494/C)|Codeforces|8|\n|<ul><li>- [ ] Done</li></ul>|77|[Dima and Kicks](http://codeforces.com/problemset/problem/358/E)|Codeforces|7|\n|<ul><li>- [ ] Done</li></ul>|78|[Hamming Distance](http://codeforces.com/problemset/problem/193/C)|Codeforces|6|\n|<ul><li>- [ ] Done</li></ul>|79|[Delivering Carcinogen](http://codeforces.com/problemset/problem/198/C)|Codeforces|6|\n|<ul><li>- [ ] Done</li></ul>|80|[Graph Cutting](http://codeforces.com/problemset/problem/405/E)|Codeforces|6|\n|<ul><li>- [ ] Done</li></ul>|81|[The Last Hole!](http://codeforces.com/problemset/problem/274/C)|Codeforces|8|\n|<ul><li>- [ ] Done</li></ul>|82|[Circling Round Treasures](http://codeforces.com/problemset/problem/375/C)|Codeforces|7|\n|<ul><li>- [ ] Done</li></ul>|83|[Lucky Tickets](http://codeforces.com/problemset/problem/333/C)|Codeforces|8|\n|<ul><li>- [ ] Done</li></ul>|84|[Help Greg the Dwarf](http://codeforces.com/problemset/problem/98/C)|Codeforces|7|\n|<ul><li>- [ ] Done</li></ul>|85|[Transportation](http://codeforces.com/problemset/problem/203/E)|Codeforces|6|\n|<ul><li>- [ ] Done</li></ul>|86|[Ship's Shortest Path](http://codeforces.com/problemset/problem/75/E)|Codeforces|7|\n|<ul><li>- [ ] Done</li></ul>|87|[Horse Races](http://codeforces.com/problemset/problem/95/D)|Codeforces|8|\n|<ul><li>- [ ] Done</li></ul>|88|[Roland and Rose](http://codeforces.com/problemset/problem/460/E)|Codeforces|8|\n|<ul><li>- [ ] Done</li></ul>|89|[Binary Key](http://codeforces.com/problemset/problem/332/E)|Codeforces|7|\n|<ul><li>- [ ] Done</li></ul>|90|[Yet Another Number Sequence](http://codeforces.com/problemset/problem/392/C)|Codeforces|9|\n|<ul><li>- [ ] Done</li></ul>|91|[Piglet's Birthday](http://codeforces.com/problemset/problem/248/E)|Codeforces|7|\n|<ul><li>- [ ] Done</li></ul>|92|[Inna and Large Sweet Matrix](http://codeforces.com/problemset/problem/390/E)|Codeforces|9|\n|<ul><li>- [ ] Done</li></ul>|93|[Two Circles](http://codeforces.com/problemset/problem/363/E)|Codeforces|9|\n|<ul><li>- [ ] Done</li></ul>|94|[Fox And Dinner](http://codeforces.com/problemset/problem/510/E)|Codeforces|6|\n|<ul><li>- [ ] Done</li></ul>|95|[Ksenia and Combinatorics](http://codeforces.com/problemset/problem/382/E)|Codeforces|8|\n|<ul><li>- [ ] Done</li></ul>|96|[Misha and Palindrome Degree](http://codeforces.com/problemset/problem/501/E)|Codeforces|7|\n|<ul><li>- [ ] Done</li></ul>|97|[Expression](http://codeforces.com/problemset/problem/58/E)|Codeforces|8|\n|<ul><li>- [ ] Done</li></ul>|98|[Lightbulb for Minister](http://codeforces.com/problemset/problem/394/E)|Codeforces|10|\n|<ul><li>- [ ] Done</li></ul>|99|[Clever Fat Rat](http://codeforces.com/problemset/problem/185/C)|Codeforces|10|\n|<ul><li>- [ ] Done</li></ul>|100|[MUH and Lots and Lots of Segments](http://codeforces.com/problemset/problem/471/E)|Codeforces|8|\n"
  },
  {
    "path": "ladders/09. Codeforces Div. 1, D/README.md",
    "content": "# Ladder Name: 9 - Codeforces Div. 1, D\n## Description\n List of random Codeforces problems, all of them are Div. 1 D problems. The problems are sorted, the most solved problem comes first. This is a good practice for whoever can solve almost all Div. 1 A, B and C problems, but might have some difficulties while solving the C problems.\n## Difficulty Level: 7\n\n| Checkbox | ID  | Problem Name | Online Judge | Difficulty |\n|---|:---:|:---:|---|---|\n|<ul><li>- [ ] Done</li></ul>|1|[Tricky Function](http://codeforces.com/problemset/problem/429/D)|Codeforces|6|\n|<ul><li>- [ ] Done</li></ul>|2|[Characteristics of Rectangles](http://codeforces.com/problemset/problem/333/D)|Codeforces|5|\n|<ul><li>- [ ] Done</li></ul>|3|[Antimatter](http://codeforces.com/problemset/problem/383/D)|Codeforces|6|\n|<ul><li>- [ ] Done</li></ul>|4|[The Child and Sequence](http://codeforces.com/problemset/problem/438/D)|Codeforces|6|\n|<ul><li>- [ ] Done</li></ul>|5|[Kindergarten](http://codeforces.com/problemset/problem/484/D)|Codeforces|7|\n|<ul><li>- [ ] Done</li></ul>|6|[Water Tree](http://codeforces.com/problemset/problem/343/D)|Codeforces|5|\n|<ul><li>- [ ] Done</li></ul>|7|[Towers](http://codeforces.com/problemset/problem/229/D)|Codeforces|5|\n|<ul><li>- [ ] Done</li></ul>|8|[Numbers](http://codeforces.com/problemset/problem/128/D)|Codeforces|5|\n|<ul><li>- [ ] Done</li></ul>|9|[Sereja and Squares](http://codeforces.com/problemset/problem/425/D)|Codeforces|6|\n|<ul><li>- [ ] Done</li></ul>|10|[Hill Climbing](http://codeforces.com/problemset/problem/406/D)|Codeforces|6|\n|<ul><li>- [ ] Done</li></ul>|11|[Yaroslav and Divisors](http://codeforces.com/problemset/problem/301/D)|Codeforces|6|\n|<ul><li>- [ ] Done</li></ul>|12|[Jzzhu and Numbers](http://codeforces.com/problemset/problem/449/D)|Codeforces|6|\n|<ul><li>- [ ] Done</li></ul>|13|[Game with Powers](http://codeforces.com/problemset/problem/317/D)|Codeforces|6|\n|<ul><li>- [ ] Done</li></ul>|14|[The table](http://codeforces.com/problemset/problem/226/D)|Codeforces|5|\n|<ul><li>- [ ] Done</li></ul>|15|[Time to Raid Cowavans](http://codeforces.com/problemset/problem/103/D)|Codeforces|5|\n|<ul><li>- [ ] Done</li></ul>|16|[Beautiful Pairs of Numbers](http://codeforces.com/problemset/problem/403/D)|Codeforces|6|\n|<ul><li>- [ ] Done</li></ul>|17|[Lovely Matrix](http://codeforces.com/problemset/problem/274/D)|Codeforces|6|\n|<ul><li>- [ ] Done</li></ul>|18|[Constants in the language of Shakespeare](http://codeforces.com/problemset/problem/132/D)|Codeforces|5|\n|<ul><li>- [ ] Done</li></ul>|19|[Polo the Penguin and Trees ](http://codeforces.com/problemset/problem/288/D)|Codeforces|8|\n|<ul><li>- [ ] Done</li></ul>|20|[Tree and Queries](http://codeforces.com/problemset/problem/375/D)|Codeforces|7|\n|<ul><li>- [ ] Done</li></ul>|21|[Traffic Jams in the Land](http://codeforces.com/problemset/problem/498/D)|Codeforces|6|\n|<ul><li>- [ ] Done</li></ul>|22|[Mashmokh and Water Tanks](http://codeforces.com/problemset/problem/414/D)|Codeforces|7|\n|<ul><li>- [ ] Done</li></ul>|23|[Iahub and Xors](http://codeforces.com/problemset/problem/341/D)|Codeforces|7|\n|<ul><li>- [ ] Done</li></ul>|24|[Fibonacci Sums](http://codeforces.com/problemset/problem/126/D)|Codeforces|6|\n|<ul><li>- [ ] Done</li></ul>|25|[Numbers](http://codeforces.com/problemset/problem/83/D)|Codeforces|7|\n|<ul><li>- [ ] Done</li></ul>|26|[Developing Game](http://codeforces.com/problemset/problem/377/D)|Codeforces|7|\n|<ul><li>- [ ] Done</li></ul>|27|[Little Elephant and Broken Sorting](http://codeforces.com/problemset/problem/258/D)|Codeforces|8|\n|<ul><li>- [ ] Done</li></ul>|28|[Clues](http://codeforces.com/problemset/problem/156/D)|Codeforces|7|\n|<ul><li>- [ ] Done</li></ul>|29|[Sereja and Sets](http://codeforces.com/problemset/problem/367/D)|Codeforces|7|\n|<ul><li>- [ ] Done</li></ul>|30|[Interval Cubing](http://codeforces.com/problemset/problem/311/D)|Codeforces|7|\n|<ul><li>- [ ] Done</li></ul>|31|[Cows and Cool Sequences](http://codeforces.com/problemset/problem/283/D)|Codeforces|7|\n|<ul><li>- [ ] Done</li></ul>|32|[Sereja and Straight Lines](http://codeforces.com/problemset/problem/314/D)|Codeforces|7|\n|<ul><li>- [ ] Done</li></ul>|33|[Beautiful Road](http://codeforces.com/problemset/problem/87/D)|Codeforces|6|\n|<ul><li>- [ ] Done</li></ul>|34|[Turtles](http://codeforces.com/problemset/problem/348/D)|Codeforces|7|\n|<ul><li>- [ ] Done</li></ul>|35|[Greg and Caves](http://codeforces.com/problemset/problem/295/D)|Codeforces|7|\n|<ul><li>- [ ] Done</li></ul>|36|[String](http://codeforces.com/problemset/problem/123/D)|Codeforces|7|\n|<ul><li>- [ ] Done</li></ul>|37|[Color the Carpet](http://codeforces.com/problemset/problem/297/D)|Codeforces|7|\n|<ul><li>- [ ] Done</li></ul>|38|[Adam and Tree](http://codeforces.com/problemset/problem/442/D)|Codeforces|7|\n|<ul><li>- [ ] Done</li></ul>|39|[Choosing Subtree is Fun](http://codeforces.com/problemset/problem/372/D)|Codeforces|8|\n|<ul><li>- [ ] Done</li></ul>|40|[Sereja and Cinema](http://codeforces.com/problemset/problem/380/D)|Codeforces|7|\n|<ul><li>- [ ] Done</li></ul>|41|[Petya and Coloring](http://codeforces.com/problemset/problem/111/D)|Codeforces|7|\n|<ul><li>- [ ] Done</li></ul>|42|[Stars](http://codeforces.com/problemset/problem/213/D)|Codeforces|6|\n|<ul><li>- [ ] Done</li></ul>|43|[Ghd](http://codeforces.com/problemset/problem/364/D)|Codeforces|9|\n|<ul><li>- [ ] Done</li></ul>|44|[Flatland Fencing](http://codeforces.com/problemset/problem/154/D)|Codeforces|7|\n|<ul><li>- [ ] Done</li></ul>|45|[Little Elephant and Retro Strings](http://codeforces.com/problemset/problem/204/D)|Codeforces|7|\n|<ul><li>- [ ] Done</li></ul>|46|[Castle](http://codeforces.com/problemset/problem/101/D)|Codeforces|6|\n|<ul><li>- [ ] Done</li></ul>|47|[Parcels](http://codeforces.com/problemset/problem/480/D)|Codeforces|8|\n|<ul><li>- [ ] Done</li></ul>|48|[Brand New Problem](http://codeforces.com/problemset/problem/201/D)|Codeforces|8|\n|<ul><li>- [ ] Done</li></ul>|49|[Largest Submatrix 3](http://codeforces.com/problemset/problem/407/D)|Codeforces|8|\n|<ul><li>- [ ] Done</li></ul>|50|[Maximum Waterfall](http://codeforces.com/problemset/problem/269/D)|Codeforces|7|\n|<ul><li>- [ ] Done</li></ul>|51|[Bags and Coins](http://codeforces.com/problemset/problem/356/D)|Codeforces|8|\n|<ul><li>- [ ] Done</li></ul>|52|[Flags](http://codeforces.com/problemset/problem/93/D)|Codeforces|7|\n|<ul><li>- [ ] Done</li></ul>|53|[Little Elephant and Triangle](http://codeforces.com/problemset/problem/220/D)|Codeforces|7|\n|<ul><li>- [ ] Done</li></ul>|54|[Domino Carpet](http://codeforces.com/problemset/problem/77/D)|Codeforces|6|\n|<ul><li>- [ ] Done</li></ul>|55|[GCD Table](http://codeforces.com/problemset/problem/338/D)|Codeforces|9|\n|<ul><li>- [ ] Done</li></ul>|56|[Museum](http://codeforces.com/problemset/problem/113/D)|Codeforces|9|\n|<ul><li>- [ ] Done</li></ul>|57|[Maxim and Increasing Subsequence](http://codeforces.com/problemset/problem/261/D)|Codeforces|8|\n|<ul><li>- [ ] Done</li></ul>|58|[Visit of the Great](http://codeforces.com/problemset/problem/185/D)|Codeforces|7|\n|<ul><li>- [ ] Done</li></ul>|59|[Tourists](http://codeforces.com/problemset/problem/286/D)|Codeforces|8|\n|<ul><li>- [ ] Done</li></ul>|60|[Robot Control](http://codeforces.com/problemset/problem/346/D)|Codeforces|7|\n|<ul><li>- [ ] Done</li></ul>|61|[Space mines](http://codeforces.com/problemset/problem/89/D)|Codeforces|7|\n|<ul><li>- [ ] Done</li></ul>|62|[World of Darkraft](http://codeforces.com/problemset/problem/138/D)|Codeforces|7|\n|<ul><li>- [ ] Done</li></ul>|63|[Dima and Figure](http://codeforces.com/problemset/problem/273/D)|Codeforces|7|\n|<ul><li>- [ ] Done</li></ul>|64|[Jeff and Removing Periods](http://codeforces.com/problemset/problem/351/D)|Codeforces|8|\n|<ul><li>- [ ] Done</li></ul>|65|[Colorful Stones](http://codeforces.com/problemset/problem/264/D)|Codeforces|7|\n|<ul><li>- [ ] Done</li></ul>|66|[The Next Good String](http://codeforces.com/problemset/problem/196/D)|Codeforces|8|\n|<ul><li>- [ ] Done</li></ul>|67|[Mission Impassable](http://codeforces.com/problemset/problem/150/D)|Codeforces|8|\n|<ul><li>- [ ] Done</li></ul>|68|[Conveyor Belts](http://codeforces.com/problemset/problem/487/D)|Codeforces|8|\n|<ul><li>- [ ] Done</li></ul>|69|[Have You Ever Heard About the Word?](http://codeforces.com/problemset/problem/319/D)|Codeforces|8|\n|<ul><li>- [ ] Done</li></ul>|70|[Birthday](http://codeforces.com/problemset/problem/494/D)|Codeforces|8|\n|<ul><li>- [ ] Done</li></ul>|71|[Horse Races](http://codeforces.com/problemset/problem/95/D)|Codeforces|8|\n|<ul><li>- [ ] Done</li></ul>|72|[Fence](http://codeforces.com/problemset/problem/232/D)|Codeforces|9|\n|<ul><li>- [ ] Done</li></ul>|73|[k-Maximum Subsequence Sum](http://codeforces.com/problemset/problem/280/D)|Codeforces|9|\n|<ul><li>- [ ] Done</li></ul>|74|[BRT Contract ](http://codeforces.com/problemset/problem/187/D)|Codeforces|8|\n|<ul><li>- [ ] Done</li></ul>|75|[Liars and Serge](http://codeforces.com/problemset/problem/256/D)|Codeforces|9|\n|<ul><li>- [ ] Done</li></ul>|76|[Levko and Sets](http://codeforces.com/problemset/problem/360/D)|Codeforces|8|\n|<ul><li>- [ ] Done</li></ul>|77|[Appleman and Complicated Task](http://codeforces.com/problemset/problem/461/D)|Codeforces|8|\n|<ul><li>- [ ] Done</li></ul>|78|[Donkey and Stars](http://codeforces.com/problemset/problem/249/D)|Codeforces|7|\n|<ul><li>- [ ] Done</li></ul>|79|[Ciel and Flipboard](http://codeforces.com/problemset/problem/321/D)|Codeforces|9|\n|<ul><li>- [ ] Done</li></ul>|80|[Unambiguous Arithmetic Expression](http://codeforces.com/problemset/problem/115/D)|Codeforces|8|\n|<ul><li>- [ ] Done</li></ul>|81|[Two Segments](http://codeforces.com/problemset/problem/193/D)|Codeforces|9|\n|<ul><li>- [ ] Done</li></ul>|82|[Rotatable Number](http://codeforces.com/problemset/problem/303/D)|Codeforces|8|\n|<ul><li>- [ ] Done</li></ul>|83|[Metro Scheme](http://codeforces.com/problemset/problem/191/D)|Codeforces|9|\n|<ul><li>- [ ] Done</li></ul>|84|[Help Monks](http://codeforces.com/problemset/problem/98/D)|Codeforces|7|\n|<ul><li>- [ ] Done</li></ul>|85|[Bitonix' Patrol](http://codeforces.com/problemset/problem/217/D)|Codeforces|8|\n|<ul><li>- [ ] Done</li></ul>|86|[Random Function and Tree](http://codeforces.com/problemset/problem/482/D)|Codeforces|8|\n|<ul><li>- [ ] Done</li></ul>|87|[Lucky Pair](http://codeforces.com/problemset/problem/145/D)|Codeforces|9|\n|<ul><li>- [ ] Done</li></ul>|88|[On Sum of Number of Inversions in Permutations](http://codeforces.com/problemset/problem/396/D)|Codeforces|9|\n|<ul><li>- [ ] Done</li></ul>|89|[Google Code Jam](http://codeforces.com/problemset/problem/277/D)|Codeforces|9|\n|<ul><li>- [ ] Done</li></ul>|90|[Misha and XOR](http://codeforces.com/problemset/problem/504/D)|Codeforces|8|\n|<ul><li>- [ ] Done</li></ul>|91|[Fox and Perfect Sets](http://codeforces.com/problemset/problem/388/D)|Codeforces|8|\n|<ul><li>- [ ] Done</li></ul>|92|[DZY Loves Games](http://codeforces.com/problemset/problem/446/D)|Codeforces|9|\n|<ul><li>- [ ] Done</li></ul>|93|[Nanami's Power Plant](http://codeforces.com/problemset/problem/434/D)|Codeforces|9|\n|<ul><li>- [ ] Done</li></ul>|94|[Fox And Travelling](http://codeforces.com/problemset/problem/512/D)|Codeforces|8|\n|<ul><li>- [ ] Done</li></ul>|95|[Graph Game](http://codeforces.com/problemset/problem/235/D)|Codeforces|8|\n|<ul><li>- [ ] Done</li></ul>|96|[Tape Programming](http://codeforces.com/problemset/problem/238/D)|Codeforces|9|\n|<ul><li>- [ ] Done</li></ul>|97|[Little Pony and Elements of Harmony](http://codeforces.com/problemset/problem/453/D)|Codeforces|9|\n|<ul><li>- [ ] Done</li></ul>|98|[Three Arrays](http://codeforces.com/problemset/problem/392/D)|Codeforces|10|\n|<ul><li>- [ ] Done</li></ul>|99|[Tree](http://codeforces.com/problemset/problem/468/D)|Codeforces|9|\n|<ul><li>- [ ] Done</li></ul>|100|[Cube Snake](http://codeforces.com/problemset/problem/198/D)|Codeforces|8|\n"
  },
  {
    "path": "ladders/10. Codeforces Div. 1, E/README.md",
    "content": "# Ladder Name: 10 - Codeforces Div. 1, E\n## Description\n List of random Codeforces problems, all of them are Div. 1 E problems. The problems are sorted, the most solved problem comes first. This is a good practice for whoever can solve almost all Div. 1 A, B, C and D problems, but might have some difficulties while solving the C problems.\n## Difficulty Level: 8\n\n| Checkbox | ID  | Problem Name | Online Judge | Difficulty |\n|---|:---:|:---:|---|---|\n|<ul><li>- [ ] Done</li></ul>|1|[Jeff and Permutation](http://codeforces.com/problemset/problem/351/E)|Codeforces|5|\n|<ul><li>- [ ] Done</li></ul>|2|[Lucky Number Representation](http://codeforces.com/problemset/problem/354/E)|Codeforces|5|\n|<ul><li>- [ ] Done</li></ul>|3|[Lucky Queries](http://codeforces.com/problemset/problem/145/E)|Codeforces|6|\n|<ul><li>- [ ] Done</li></ul>|4|[Little Elephant and Inversions](http://codeforces.com/problemset/problem/220/E)|Codeforces|7|\n|<ul><li>- [ ] Done</li></ul>|5|[Little Elephant and Tree](http://codeforces.com/problemset/problem/258/E)|Codeforces|7|\n|<ul><li>- [ ] Done</li></ul>|6|[Lucky Array](http://codeforces.com/problemset/problem/121/E)|Codeforces|7|\n|<ul><li>- [ ] Done</li></ul>|7|[Lucky Country](http://codeforces.com/problemset/problem/95/E)|Codeforces|7|\n|<ul><li>- [ ] Done</li></ul>|8|[Ciel and Gondolas](http://codeforces.com/problemset/problem/321/E)|Codeforces|8|\n|<ul><li>- [ ] Done</li></ul>|9|[Lucky Arrays](http://codeforces.com/problemset/problem/256/E)|Codeforces|7|\n|<ul><li>- [ ] Done</li></ul>|10|[Gifts](http://codeforces.com/problemset/problem/229/E)|Codeforces|9|\n|<ul><li>- [ ] Done</li></ul>|11|[Sign on Fence](http://codeforces.com/problemset/problem/484/E)|Codeforces|8|\n|<ul><li>- [ ] Done</li></ul>|12|[Gripping Story](http://codeforces.com/problemset/problem/198/E)|Codeforces|7|\n|<ul><li>- [ ] Done</li></ul>|13|[Opening Portals](http://codeforces.com/problemset/problem/196/E)|Codeforces|7|\n|<ul><li>- [ ] Done</li></ul>|14|[Optimize!](http://codeforces.com/problemset/problem/338/E)|Codeforces|8|\n|<ul><li>- [ ] Done</li></ul>|15|[Sereja and Sets](http://codeforces.com/problemset/problem/425/E)|Codeforces|7|\n|<ul><li>- [ ] Done</li></ul>|16|[Little Elephant and Strings](http://codeforces.com/problemset/problem/204/E)|Codeforces|9|\n|<ul><li>- [ ] Done</li></ul>|17|[Lostborn](http://codeforces.com/problemset/problem/93/E)|Codeforces|8|\n|<ul><li>- [ ] Done</li></ul>|18|[Bits of merry old England](http://codeforces.com/problemset/problem/132/E)|Codeforces|9|\n|<ul><li>- [ ] Done</li></ul>|19|[Igloo Skyscraper](http://codeforces.com/problemset/problem/91/E)|Codeforces|7|\n|<ul><li>- [ ] Done</li></ul>|20|[Vowels](http://codeforces.com/problemset/problem/383/E)|Codeforces|8|\n|<ul><li>- [ ] Done</li></ul>|21|[Cow Tennis Tournament](http://codeforces.com/problemset/problem/283/E)|Codeforces|9|\n|<ul><li>- [ ] Done</li></ul>|22|[Thoroughly Bureaucratic Organization](http://codeforces.com/problemset/problem/201/E)|Codeforces|7|\n|<ul><li>- [ ] Done</li></ul>|23|[Candies and Stones](http://codeforces.com/problemset/problem/101/E)|Codeforces|8|\n|<ul><li>- [ ] Done</li></ul>|24|[Sereja and Intervals](http://codeforces.com/problemset/problem/367/E)|Codeforces|8|\n|<ul><li>- [ ] Done</li></ul>|25|[Ladies' Shop](http://codeforces.com/problemset/problem/286/E)|Codeforces|9|\n|<ul><li>- [ ] Done</li></ul>|26|[Martian Food](http://codeforces.com/problemset/problem/77/E)|Codeforces|8|\n|<ul><li>- [ ] Done</li></ul>|27|[Buying Sets](http://codeforces.com/problemset/problem/103/E)|Codeforces|10|\n|<ul><li>- [ ] Done</li></ul>|28|[Wizards and Bets](http://codeforces.com/problemset/problem/167/E)|Codeforces|8|\n|<ul><li>- [ ] Done</li></ul>|29|[Maxim and Calculator](http://codeforces.com/problemset/problem/261/E)|Codeforces|9|\n|<ul><li>- [ ] Done</li></ul>|30|[Stairs and Lines](http://codeforces.com/problemset/problem/498/E)|Codeforces|8|\n|<ul><li>- [ ] Done</li></ul>|31|[Maze](http://codeforces.com/problemset/problem/123/E)|Codeforces|8|\n|<ul><li>- [ ] Done</li></ul>|32|[Alien DNA](http://codeforces.com/problemset/problem/217/E)|Codeforces|9|\n|<ul><li>- [ ] Done</li></ul>|33|[Number Challenge](http://codeforces.com/problemset/problem/235/E)|Codeforces|8|\n|<ul><li>- [ ] Done</li></ul>|34|[Fibonacci Number](http://codeforces.com/problemset/problem/193/E)|Codeforces|9|\n|<ul><li>- [ ] Done</li></ul>|35|[Noble Knight's Path](http://codeforces.com/problemset/problem/226/E)|Codeforces|10|\n|<ul><li>- [ ] Done</li></ul>|36|[Biologist](http://codeforces.com/problemset/problem/311/E)|Codeforces|8|\n|<ul><li>- [ ] Done</li></ul>|37|[Polo the Penguin and Lucky Numbers](http://codeforces.com/problemset/problem/288/E)|Codeforces|9|\n|<ul><li>- [ ] Done</li></ul>|38|[Dima and Game](http://codeforces.com/problemset/problem/273/E)|Codeforces|8|\n|<ul><li>- [ ] Done</li></ul>|39|[Candies Game](http://codeforces.com/problemset/problem/341/E)|Codeforces|9|\n|<ul><li>- [ ] Done</li></ul>|40|[Endless Matrix](http://codeforces.com/problemset/problem/249/E)|Codeforces|7|\n|<ul><li>- [ ] Done</li></ul>|41|[Freezing with Style](http://codeforces.com/problemset/problem/150/E)|Codeforces|10|\n|<ul><li>- [ ] Done</li></ul>|42|[Road Repairs](http://codeforces.com/problemset/problem/240/E)|Codeforces|9|\n|<ul><li>- [ ] Done</li></ul>|43|[Weak Subsequence](http://codeforces.com/problemset/problem/135/E)|Codeforces|9|\n|<ul><li>- [ ] Done</li></ul>|44|[Sereja and Squares](http://codeforces.com/problemset/problem/314/E)|Codeforces|9|\n|<ul><li>- [ ] Done</li></ul>|45|[Levko and Game](http://codeforces.com/problemset/problem/360/E)|Codeforces|9|\n|<ul><li>- [ ] Done</li></ul>|46|[Ping-Pong](http://codeforces.com/problemset/problem/319/E)|Codeforces|10|\n|<ul><li>- [ ] Done</li></ul>|47|[Function](http://codeforces.com/problemset/problem/455/E)|Codeforces|9|\n|<ul><li>- [ ] Done</li></ul>|48|[Quick Tortoise](http://codeforces.com/problemset/problem/232/E)|Codeforces|9|\n|<ul><li>- [ ] Done</li></ul>|49|[Pilgrims](http://codeforces.com/problemset/problem/348/E)|Codeforces|9|\n|<ul><li>- [ ] Done</li></ul>|50|[The Classic Problem](http://codeforces.com/problemset/problem/464/E)|Codeforces|9|\n|<ul><li>- [ ] Done</li></ul>|51|[Meeting Her](http://codeforces.com/problemset/problem/238/E)|Codeforces|9|\n|<ul><li>- [ ] Done</li></ul>|52|[Mystic Carvings](http://codeforces.com/problemset/problem/297/E)|Codeforces|9|\n|<ul><li>- [ ] Done</li></ul>|53|[Yaroslav and Arrangements](http://codeforces.com/problemset/problem/301/E)|Codeforces|9|\n|<ul><li>- [ ] Done</li></ul>|54|[Jzzhu and Squares](http://codeforces.com/problemset/problem/449/E)|Codeforces|9|\n|<ul><li>- [ ] Done</li></ul>|55|[Roadside Trees](http://codeforces.com/problemset/problem/264/E)|Codeforces|9|\n|<ul><li>- [ ] Done</li></ul>|56|[Appleman and a Game](http://codeforces.com/problemset/problem/461/E)|Codeforces|9|\n|<ul><li>- [ ] Done</li></ul>|57|[Parking Lot](http://codeforces.com/problemset/problem/480/E)|Codeforces|9|\n|<ul><li>- [ ] Done</li></ul>|58|[Cookie Clicker](http://codeforces.com/problemset/problem/377/E)|Codeforces|9|\n|<ul><li>- [ ] Done</li></ul>|59|[Doodle Jump](http://codeforces.com/problemset/problem/346/E)|Codeforces|10|\n|<ul><li>- [ ] Done</li></ul>|60|[Xenia and String Problem](http://codeforces.com/problemset/problem/356/E)|Codeforces|10|\n|<ul><li>- [ ] Done</li></ul>|61|[Mogohu-Rea Idol](http://codeforces.com/problemset/problem/87/E)|Codeforces|8|\n|<ul><li>- [ ] Done</li></ul>|62|[Random Ranking](http://codeforces.com/problemset/problem/303/E)|Codeforces|10|\n|<ul><li>- [ ] Done</li></ul>|63|[Empty Rectangles](http://codeforces.com/problemset/problem/364/E)|Codeforces|9|\n|<ul><li>- [ ] Done</li></ul>|64|[Mirror Room](http://codeforces.com/problemset/problem/274/E)|Codeforces|10|\n|<ul><li>- [ ] Done</li></ul>|65|[Little Pony and Lord Tirek](http://codeforces.com/problemset/problem/453/E)|Codeforces|9|\n|<ul><li>- [ ] Done</li></ul>|66|[k-d-sequence](http://codeforces.com/problemset/problem/407/E)|Codeforces|10|\n|<ul><li>- [ ] Done</li></ul>|67|[Drawing Circles is Fun](http://codeforces.com/problemset/problem/372/E)|Codeforces|9|\n|<ul><li>- [ ] Done</li></ul>|68|[Fox And Polygon](http://codeforces.com/problemset/problem/512/E)|Codeforces|8|\n|<ul><li>- [ ] Done</li></ul>|69|[Evil](http://codeforces.com/problemset/problem/329/E)|Codeforces|10|\n|<ul><li>- [ ] Done</li></ul>|70|[Darts](http://codeforces.com/problemset/problem/107/E)|Codeforces|9|\n|<ul><li>- [ ] Done</li></ul>|71|[Subsequences Return](http://codeforces.com/problemset/problem/497/E)|Codeforces|9|\n|<ul><li>- [ ] Done</li></ul>|72|[Red and Black Tree](http://codeforces.com/problemset/problem/375/E)|Codeforces|10|\n|<ul><li>- [ ] Done</li></ul>|73|[The Child and Binary Tree](http://codeforces.com/problemset/problem/438/E)|Codeforces|10|\n|<ul><li>- [ ] Done</li></ul>|74|[Sequence Transformation](http://codeforces.com/problemset/problem/280/E)|Codeforces|10|\n|<ul><li>- [ ] Done</li></ul>|75|[Gena and Second Distance](http://codeforces.com/problemset/problem/442/E)|Codeforces|9|\n|<ul><li>- [ ] Done</li></ul>|76|[Two Rooted Trees](http://codeforces.com/problemset/problem/403/E)|Codeforces|9|\n|<ul><li>- [ ] Done</li></ul>|77|[Matrix](http://codeforces.com/problemset/problem/243/E)|Codeforces|9|\n|<ul><li>- [ ] Done</li></ul>|78|[Planar Graph](http://codeforces.com/problemset/problem/223/E)|Codeforces|10|\n|<ul><li>- [ ] Done</li></ul>|79|[Misha and LCP on Tree](http://codeforces.com/problemset/problem/504/E)|Codeforces|9|\n|<ul><li>- [ ] Done</li></ul>|80|[Sleeping](http://codeforces.com/problemset/problem/113/E)|Codeforces|8|\n|<ul><li>- [ ] Done</li></ul>|81|[String Theory](http://codeforces.com/problemset/problem/269/E)|Codeforces|10|\n|<ul><li>- [ ] Done</li></ul>|82|[Martian Colony](http://codeforces.com/problemset/problem/154/E)|Codeforces|10|\n|<ul><li>- [ ] Done</li></ul>|83|[Birthday](http://codeforces.com/problemset/problem/128/E)|Codeforces|10|\n|<ul><li>- [ ] Done</li></ul>|84|[Sharti](http://codeforces.com/problemset/problem/494/E)|Codeforces|8|\n|<ul><li>- [ ] Done</li></ul>|85|[Tourists](http://codeforces.com/problemset/problem/487/E)|Codeforces|9|\n|<ul><li>- [ ] Done</li></ul>|86|[Furukawa Nagisa's Tree](http://codeforces.com/problemset/problem/434/E)|Codeforces|9|\n|<ul><li>- [ ] Done</li></ul>|87|[ELCA](http://codeforces.com/problemset/problem/482/E)|Codeforces|10|\n|<ul><li>- [ ] Done</li></ul>|88|[Lucky Interval](http://codeforces.com/problemset/problem/109/E)|Codeforces|10|\n|<ul><li>- [ ] Done</li></ul>|89|[On Iteration of One Well-Known Function](http://codeforces.com/problemset/problem/396/E)|Codeforces|10|\n|<ul><li>- [ ] Done</li></ul>|90|[Soap Time! - 2](http://codeforces.com/problemset/problem/185/E)|Codeforces|9|\n|<ul><li>- [ ] Done</li></ul>|91|[Mashmokh's Designed Problem](http://codeforces.com/problemset/problem/414/E)|Codeforces|10|\n|<ul><li>- [ ] Done</li></ul>|92|[Fox and Meteor Shower](http://codeforces.com/problemset/problem/388/E)|Codeforces|10|\n|<ul><li>- [ ] Done</li></ul>|93|[Heaven Tour](http://codeforces.com/problemset/problem/187/E)|Codeforces|9|\n|<ul><li>- [ ] Done</li></ul>|94|[Fire and Ice](http://codeforces.com/problemset/problem/89/E)|Codeforces|10|\n|<ul><li>- [ ] Done</li></ul>|95|[Pills](http://codeforces.com/problemset/problem/126/E)|Codeforces|10|\n|<ul><li>- [ ] Done</li></ul>|96|[Dreamoon and Notepad](http://codeforces.com/problemset/problem/477/E)|Codeforces|10|\n|<ul><li>- [ ] Done</li></ul>|97|[Sorting Permutations](http://codeforces.com/problemset/problem/398/E)|Codeforces|10|\n|<ul><li>- [ ] Done</li></ul>|98|[Help Greg the Dwarf 2](http://codeforces.com/problemset/problem/142/E)|Codeforces|10|\n|<ul><li>- [ ] Done</li></ul>|99|[Petya and Rectangle](http://codeforces.com/problemset/problem/111/E)|Codeforces|10|\n|<ul><li>- [ ] Done</li></ul>|100|[Permanent](http://codeforces.com/problemset/problem/468/E)|Codeforces|9|\n"
  },
  {
    "path": "ladders/11. Codeforces Rating < 1300/README.md",
    "content": "# Ladder Name: 11 - Codeforces Rating < 1300\n## Description\n For beginners, unrated users or users with Codeforces Rating < 1300.\n## Difficulty Level: 2\n\n| Checkbox | ID  | Problem Name | Online Judge | Difficulty |\n|---|:---:|:---:|---|---|\n|<ul><li>- [ ] Done</li></ul>|1|[Young Physicist](http://codeforces.com/problemset/problem/69/A)|Codeforces|1|\n|<ul><li>- [ ] Done</li></ul>|2|[Beautiful Matrix](http://codeforces.com/problemset/problem/263/A)|Codeforces|1|\n|<ul><li>- [ ] Done</li></ul>|3|[Queue at the School](http://codeforces.com/problemset/problem/266/B)|Codeforces|1|\n|<ul><li>- [ ] Done</li></ul>|4|[Borze](http://codeforces.com/problemset/problem/32/B)|Codeforces|1|\n|<ul><li>- [ ] Done</li></ul>|5|[Beautiful Year](http://codeforces.com/problemset/problem/271/A)|Codeforces|1|\n|<ul><li>- [ ] Done</li></ul>|6|[Lights Out](http://codeforces.com/problemset/problem/275/A)|Codeforces|1|\n|<ul><li>- [ ] Done</li></ul>|7|[Word](http://codeforces.com/problemset/problem/59/A)|Codeforces|1|\n|<ul><li>- [ ] Done</li></ul>|8|[Word Capitalization](http://codeforces.com/problemset/problem/281/A)|Codeforces|1|\n|<ul><li>- [ ] Done</li></ul>|9|[Nearly Lucky Number](http://codeforces.com/problemset/problem/110/A)|Codeforces|1|\n|<ul><li>- [ ] Done</li></ul>|10|[Stones on the Table](http://codeforces.com/problemset/problem/266/A)|Codeforces|1|\n|<ul><li>- [ ] Done</li></ul>|11|[Panoramix's Prediction](http://codeforces.com/problemset/problem/80/A)|Codeforces|1|\n|<ul><li>- [ ] Done</li></ul>|12|[Ultra-Fast Mathematician](http://codeforces.com/problemset/problem/61/A)|Codeforces|1|\n|<ul><li>- [ ] Done</li></ul>|13|[Perfect Permutation](http://codeforces.com/problemset/problem/233/A)|Codeforces|1|\n|<ul><li>- [ ] Done</li></ul>|14|[Arrival of the General](http://codeforces.com/problemset/problem/144/A)|Codeforces|1|\n|<ul><li>- [ ] Done</li></ul>|15|[Drinks](http://codeforces.com/problemset/problem/200/B)|Codeforces|1|\n|<ul><li>- [ ] Done</li></ul>|16|[Insomnia cure](http://codeforces.com/problemset/problem/148/A)|Codeforces|1|\n|<ul><li>- [ ] Done</li></ul>|17|[Cupboards](http://codeforces.com/problemset/problem/248/A)|Codeforces|1|\n|<ul><li>- [ ] Done</li></ul>|18|[I_love_\\%username\\%](http://codeforces.com/problemset/problem/155/A)|Codeforces|1|\n|<ul><li>- [ ] Done</li></ul>|19|[Tram](http://codeforces.com/problemset/problem/116/A)|Codeforces|1|\n|<ul><li>- [ ] Done</li></ul>|20|[Helpful Maths](http://codeforces.com/problemset/problem/339/A)|Codeforces|1|\n|<ul><li>- [ ] Done</li></ul>|21|[Is your horseshoe on the other hoof?](http://codeforces.com/problemset/problem/228/A)|Codeforces|1|\n|<ul><li>- [ ] Done</li></ul>|22|[Way Too Long Words](http://codeforces.com/problemset/problem/71/A)|Codeforces|1|\n|<ul><li>- [ ] Done</li></ul>|23|[Boy or Girl](http://codeforces.com/problemset/problem/236/A)|Codeforces|1|\n|<ul><li>- [ ] Done</li></ul>|24|[Amusing Joke](http://codeforces.com/problemset/problem/141/A)|Codeforces|1|\n|<ul><li>- [ ] Done</li></ul>|25|[Soft Drinking](http://codeforces.com/problemset/problem/151/A)|Codeforces|1|\n|<ul><li>- [ ] Done</li></ul>|26|[HQ9+](http://codeforces.com/problemset/problem/133/A)|Codeforces|1|\n|<ul><li>- [ ] Done</li></ul>|27|[Petya and Strings](http://codeforces.com/problemset/problem/112/A)|Codeforces|1|\n|<ul><li>- [ ] Done</li></ul>|28|[Team](http://codeforces.com/problemset/problem/231/A)|Codeforces|1|\n|<ul><li>- [ ] Done</li></ul>|29|[Bit++](http://codeforces.com/problemset/problem/282/A)|Codeforces|1|\n|<ul><li>- [ ] Done</li></ul>|30|[Effective Approach](http://codeforces.com/problemset/problem/227/B)|Codeforces|2|\n|<ul><li>- [ ] Done</li></ul>|31|[Dima and Friends](http://codeforces.com/problemset/problem/272/A)|Codeforces|2|\n|<ul><li>- [ ] Done</li></ul>|32|[Jzzhu and Children](http://codeforces.com/problemset/problem/450/A)|Codeforces|2|\n|<ul><li>- [ ] Done</li></ul>|33|[Supercentral Point](http://codeforces.com/problemset/problem/165/A)|Codeforces|2|\n|<ul><li>- [ ] Done</li></ul>|34|[Petr and Book](http://codeforces.com/problemset/problem/139/A)|Codeforces|2|\n|<ul><li>- [ ] Done</li></ul>|35|[Parallelepiped](http://codeforces.com/problemset/problem/224/A)|Codeforces|2|\n|<ul><li>- [ ] Done</li></ul>|36|[Reconnaissance 2](http://codeforces.com/problemset/problem/34/A)|Codeforces|2|\n|<ul><li>- [ ] Done</li></ul>|37|[Even Odds](http://codeforces.com/problemset/problem/318/A)|Codeforces|2|\n|<ul><li>- [ ] Done</li></ul>|38|[Little Elephant and Rozdil](http://codeforces.com/problemset/problem/205/A)|Codeforces|2|\n|<ul><li>- [ ] Done</li></ul>|39|[Hexadecimal's theorem](http://codeforces.com/problemset/problem/199/A)|Codeforces|2|\n|<ul><li>- [ ] Done</li></ul>|40|[Jeff and Digits](http://codeforces.com/problemset/problem/352/A)|Codeforces|2|\n|<ul><li>- [ ] Done</li></ul>|41|[Xenia and Ringroad](http://codeforces.com/problemset/problem/339/B)|Codeforces|2|\n|<ul><li>- [ ] Done</li></ul>|42|[Magic Numbers](http://codeforces.com/problemset/problem/320/A)|Codeforces|2|\n|<ul><li>- [ ] Done</li></ul>|43|[Translation](http://codeforces.com/problemset/problem/41/A)|Codeforces|2|\n|<ul><li>- [ ] Done</li></ul>|44|[Football](http://codeforces.com/problemset/problem/43/A)|Codeforces|2|\n|<ul><li>- [ ] Done</li></ul>|45|[Bicycle Chain](http://codeforces.com/problemset/problem/215/A)|Codeforces|2|\n|<ul><li>- [ ] Done</li></ul>|46|[Sale](http://codeforces.com/problemset/problem/34/B)|Codeforces|2|\n|<ul><li>- [ ] Done</li></ul>|47|[System of Equations](http://codeforces.com/problemset/problem/214/A)|Codeforces|2|\n|<ul><li>- [ ] Done</li></ul>|48|[Business trip](http://codeforces.com/problemset/problem/149/A)|Codeforces|2|\n|<ul><li>- [ ] Done</li></ul>|49|[Dubstep](http://codeforces.com/problemset/problem/208/A)|Codeforces|2|\n|<ul><li>- [ ] Done</li></ul>|50|[k-String](http://codeforces.com/problemset/problem/219/A)|Codeforces|2|\n|<ul><li>- [ ] Done</li></ul>|51|[The number of positions](http://codeforces.com/problemset/problem/124/A)|Codeforces|2|\n|<ul><li>- [ ] Done</li></ul>|52|[Football](http://codeforces.com/problemset/problem/96/A)|Codeforces|2|\n|<ul><li>- [ ] Done</li></ul>|53|[String Task](http://codeforces.com/problemset/problem/118/A)|Codeforces|2|\n|<ul><li>- [ ] Done</li></ul>|54|[Little Elephant and Function](http://codeforces.com/problemset/problem/221/A)|Codeforces|2|\n|<ul><li>- [ ] Done</li></ul>|55|[Present from Lena](http://codeforces.com/problemset/problem/118/B)|Codeforces|2|\n|<ul><li>- [ ] Done</li></ul>|56|[Dragons](http://codeforces.com/problemset/problem/230/A)|Codeforces|2|\n|<ul><li>- [ ] Done</li></ul>|57|[Puzzles](http://codeforces.com/problemset/problem/337/A)|Codeforces|2|\n|<ul><li>- [ ] Done</li></ul>|58|[Chat room](http://codeforces.com/problemset/problem/58/A)|Codeforces|2|\n|<ul><li>- [ ] Done</li></ul>|59|[Airport](http://codeforces.com/problemset/problem/218/B)|Codeforces|2|\n|<ul><li>- [ ] Done</li></ul>|60|[DZY Loves Chessboard](http://codeforces.com/problemset/problem/445/A)|Codeforces|3|\n|<ul><li>- [ ] Done</li></ul>|61|[Pashmak and Flowers](http://codeforces.com/problemset/problem/459/B)|Codeforces|3|\n|<ul><li>- [ ] Done</li></ul>|62|[Jeff and Periods](http://codeforces.com/problemset/problem/352/B)|Codeforces|3|\n|<ul><li>- [ ] Done</li></ul>|63|[Little Girl and Game](http://codeforces.com/problemset/problem/276/B)|Codeforces|3|\n|<ul><li>- [ ] Done</li></ul>|64|[Sail](http://codeforces.com/problemset/problem/298/B)|Codeforces|3|\n|<ul><li>- [ ] Done</li></ul>|65|[Shower Line](http://codeforces.com/problemset/problem/431/B)|Codeforces|3|\n|<ul><li>- [ ] Done</li></ul>|66|[Shooshuns and Sequence ](http://codeforces.com/problemset/problem/222/A)|Codeforces|3|\n|<ul><li>- [ ] Done</li></ul>|67|[Xenia and Divisors](http://codeforces.com/problemset/problem/342/A)|Codeforces|3|\n|<ul><li>- [ ] Done</li></ul>|68|[Letter](http://codeforces.com/problemset/problem/43/B)|Codeforces|3|\n|<ul><li>- [ ] Done</li></ul>|69|[Kitahara Haruki's Gift](http://codeforces.com/problemset/problem/433/A)|Codeforces|3|\n|<ul><li>- [ ] Done</li></ul>|70|[Comparing Strings](http://codeforces.com/problemset/problem/186/A)|Codeforces|3|\n|<ul><li>- [ ] Done</li></ul>|71|[Hungry Sequence](http://codeforces.com/problemset/problem/327/B)|Codeforces|3|\n|<ul><li>- [ ] Done</li></ul>|72|[Big Segment](http://codeforces.com/problemset/problem/242/B)|Codeforces|3|\n|<ul><li>- [ ] Done</li></ul>|73|[Little Elephant and Bits](http://codeforces.com/problemset/problem/258/A)|Codeforces|3|\n|<ul><li>- [ ] Done</li></ul>|74|[Yaroslav and Permutations](http://codeforces.com/problemset/problem/296/A)|Codeforces|3|\n|<ul><li>- [ ] Done</li></ul>|75|[Fence](http://codeforces.com/problemset/problem/363/B)|Codeforces|3|\n|<ul><li>- [ ] Done</li></ul>|76|[TL](http://codeforces.com/problemset/problem/350/A)|Codeforces|3|\n|<ul><li>- [ ] Done</li></ul>|77|[Increase and Decrease](http://codeforces.com/problemset/problem/246/B)|Codeforces|3|\n|<ul><li>- [ ] Done</li></ul>|78|[Two Bags of Potatoes](http://codeforces.com/problemset/problem/239/A)|Codeforces|3|\n|<ul><li>- [ ] Done</li></ul>|79|[Unlucky Ticket](http://codeforces.com/problemset/problem/160/B)|Codeforces|3|\n|<ul><li>- [ ] Done</li></ul>|80|[Boys and Girls](http://codeforces.com/problemset/problem/253/A)|Codeforces|3|\n|<ul><li>- [ ] Done</li></ul>|81|[Easy Number Challenge](http://codeforces.com/problemset/problem/236/B)|Codeforces|3|\n|<ul><li>- [ ] Done</li></ul>|82|[Pythagorean Theorem II](http://codeforces.com/problemset/problem/304/A)|Codeforces|3|\n|<ul><li>- [ ] Done</li></ul>|83|[Cards with Numbers](http://codeforces.com/problemset/problem/254/A)|Codeforces|3|\n|<ul><li>- [ ] Done</li></ul>|84|[Domino](http://codeforces.com/problemset/problem/353/A)|Codeforces|3|\n|<ul><li>- [ ] Done</li></ul>|85|[Cinema Line](http://codeforces.com/problemset/problem/349/A)|Codeforces|3|\n|<ul><li>- [ ] Done</li></ul>|86|[Rank List](http://codeforces.com/problemset/problem/166/A)|Codeforces|3|\n|<ul><li>- [ ] Done</li></ul>|87|[Cut Ribbon](http://codeforces.com/problemset/problem/189/A)|Codeforces|3|\n|<ul><li>- [ ] Done</li></ul>|88|[IQ Test](http://codeforces.com/problemset/problem/287/A)|Codeforces|3|\n|<ul><li>- [ ] Done</li></ul>|89|[Building Permutation](http://codeforces.com/problemset/problem/285/C)|Codeforces|3|\n|<ul><li>- [ ] Done</li></ul>|90|[Kuriyama Mirai's Stones](http://codeforces.com/problemset/problem/433/B)|Codeforces|3|\n|<ul><li>- [ ] Done</li></ul>|91|[T-primes](http://codeforces.com/problemset/problem/230/B)|Codeforces|3|\n|<ul><li>- [ ] Done</li></ul>|92|[Sereja and Suffixes](http://codeforces.com/problemset/problem/368/B)|Codeforces|3|\n|<ul><li>- [ ] Done</li></ul>|93|[Flipping Game](http://codeforces.com/problemset/problem/327/A)|Codeforces|3|\n|<ul><li>- [ ] Done</li></ul>|94|[Free Cash](http://codeforces.com/problemset/problem/237/A)|Codeforces|3|\n|<ul><li>- [ ] Done</li></ul>|95|[Polo the Penguin and Matrix](http://codeforces.com/problemset/problem/289/B)|Codeforces|4|\n|<ul><li>- [ ] Done</li></ul>|96|[Jzzhu and Sequences](http://codeforces.com/problemset/problem/450/B)|Codeforces|4|\n|<ul><li>- [ ] Done</li></ul>|97|[Appleman and Card Game](http://codeforces.com/problemset/problem/462/B)|Codeforces|4|\n|<ul><li>- [ ] Done</li></ul>|98|[Sort the Array](http://codeforces.com/problemset/problem/451/B)|Codeforces|4|\n|<ul><li>- [ ] Done</li></ul>|99|[Sereja and Bottles](http://codeforces.com/problemset/problem/315/A)|Codeforces|4|\n|<ul><li>- [ ] Done</li></ul>|100|[Adding Digits](http://codeforces.com/problemset/problem/260/A)|Codeforces|4|\n"
  },
  {
    "path": "ladders/12. 1300 <= Codeforces Rating <= 1399/README.md",
    "content": "# Ladder Name: 12 - 1300 <= Codeforces Rating <= 1399\n## Description\n For users satisfying this condition\n## Difficulty Level: 3\n\n| Checkbox | ID  | Problem Name | Online Judge | Difficulty |\n|---|:---:|:---:|---|---|\n|<ul><li>- [ ] Done</li></ul>|1|[Arrival of the General](http://codeforces.com/problemset/problem/144/A)|Codeforces|1|\n|<ul><li>- [ ] Done</li></ul>|2|[Beautiful Matrix](http://codeforces.com/problemset/problem/263/A)|Codeforces|1|\n|<ul><li>- [ ] Done</li></ul>|3|[Ultra-Fast Mathematician](http://codeforces.com/problemset/problem/61/A)|Codeforces|1|\n|<ul><li>- [ ] Done</li></ul>|4|[Blackjack](http://codeforces.com/problemset/problem/104/A)|Codeforces|1|\n|<ul><li>- [ ] Done</li></ul>|5|[HQ9+](http://codeforces.com/problemset/problem/133/A)|Codeforces|1|\n|<ul><li>- [ ] Done</li></ul>|6|[I_love_\\%username\\%](http://codeforces.com/problemset/problem/155/A)|Codeforces|1|\n|<ul><li>- [ ] Done</li></ul>|7|[Petya and Strings](http://codeforces.com/problemset/problem/112/A)|Codeforces|1|\n|<ul><li>- [ ] Done</li></ul>|8|[Cookies](http://codeforces.com/problemset/problem/129/A)|Codeforces|1|\n|<ul><li>- [ ] Done</li></ul>|9|[Candy Bags](http://codeforces.com/problemset/problem/334/A)|Codeforces|1|\n|<ul><li>- [ ] Done</li></ul>|10|[Drinks](http://codeforces.com/problemset/problem/200/B)|Codeforces|1|\n|<ul><li>- [ ] Done</li></ul>|11|[Vasily the Bear and Triangle](http://codeforces.com/problemset/problem/336/A)|Codeforces|1|\n|<ul><li>- [ ] Done</li></ul>|12|[Lunch Rush](http://codeforces.com/problemset/problem/276/A)|Codeforces|1|\n|<ul><li>- [ ] Done</li></ul>|13|[Cakeminator](http://codeforces.com/problemset/problem/330/A)|Codeforces|1|\n|<ul><li>- [ ] Done</li></ul>|14|[Stones on the Table](http://codeforces.com/problemset/problem/266/A)|Codeforces|1|\n|<ul><li>- [ ] Done</li></ul>|15|[Bit++](http://codeforces.com/problemset/problem/282/A)|Codeforces|1|\n|<ul><li>- [ ] Done</li></ul>|16|[Levko and Table](http://codeforces.com/problemset/problem/361/A)|Codeforces|1|\n|<ul><li>- [ ] Done</li></ul>|17|[Young Physicist](http://codeforces.com/problemset/problem/69/A)|Codeforces|1|\n|<ul><li>- [ ] Done</li></ul>|18|[Chips](http://codeforces.com/problemset/problem/92/A)|Codeforces|1|\n|<ul><li>- [ ] Done</li></ul>|19|[Tram](http://codeforces.com/problemset/problem/116/A)|Codeforces|1|\n|<ul><li>- [ ] Done</li></ul>|20|[Queue at the School](http://codeforces.com/problemset/problem/266/B)|Codeforces|1|\n|<ul><li>- [ ] Done</li></ul>|21|[Way Too Long Words](http://codeforces.com/problemset/problem/71/A)|Codeforces|1|\n|<ul><li>- [ ] Done</li></ul>|22|[Present from Lena](http://codeforces.com/problemset/problem/118/B)|Codeforces|2|\n|<ul><li>- [ ] Done</li></ul>|23|[Jeff and Digits](http://codeforces.com/problemset/problem/352/A)|Codeforces|2|\n|<ul><li>- [ ] Done</li></ul>|24|[Slightly Decreasing Permutations](http://codeforces.com/problemset/problem/285/A)|Codeforces|2|\n|<ul><li>- [ ] Done</li></ul>|25|[Sale](http://codeforces.com/problemset/problem/34/B)|Codeforces|2|\n|<ul><li>- [ ] Done</li></ul>|26|[Fancy Fence](http://codeforces.com/problemset/problem/270/A)|Codeforces|2|\n|<ul><li>- [ ] Done</li></ul>|27|[Dragons](http://codeforces.com/problemset/problem/230/A)|Codeforces|2|\n|<ul><li>- [ ] Done</li></ul>|28|[The number of positions](http://codeforces.com/problemset/problem/124/A)|Codeforces|2|\n|<ul><li>- [ ] Done</li></ul>|29|[Translation](http://codeforces.com/problemset/problem/41/A)|Codeforces|2|\n|<ul><li>- [ ] Done</li></ul>|30|[Wizards and Demonstration](http://codeforces.com/problemset/problem/168/A)|Codeforces|2|\n|<ul><li>- [ ] Done</li></ul>|31|[Xenia and Ringroad](http://codeforces.com/problemset/problem/339/B)|Codeforces|2|\n|<ul><li>- [ ] Done</li></ul>|32|[Little Elephant and Rozdil](http://codeforces.com/problemset/problem/205/A)|Codeforces|2|\n|<ul><li>- [ ] Done</li></ul>|33|[Life Without Zeros](http://codeforces.com/problemset/problem/75/A)|Codeforces|2|\n|<ul><li>- [ ] Done</li></ul>|34|[Football](http://codeforces.com/problemset/problem/43/A)|Codeforces|2|\n|<ul><li>- [ ] Done</li></ul>|35|[Dubstep](http://codeforces.com/problemset/problem/208/A)|Codeforces|2|\n|<ul><li>- [ ] Done</li></ul>|36|[Magic Numbers](http://codeforces.com/problemset/problem/320/A)|Codeforces|2|\n|<ul><li>- [ ] Done</li></ul>|37|[String Task](http://codeforces.com/problemset/problem/118/A)|Codeforces|2|\n|<ul><li>- [ ] Done</li></ul>|38|[Lucky Division](http://codeforces.com/problemset/problem/122/A)|Codeforces|2|\n|<ul><li>- [ ] Done</li></ul>|39|[Array](http://codeforces.com/problemset/problem/300/A)|Codeforces|2|\n|<ul><li>- [ ] Done</li></ul>|40|[Sum of Digits](http://codeforces.com/problemset/problem/102/B)|Codeforces|2|\n|<ul><li>- [ ] Done</li></ul>|41|[k-String](http://codeforces.com/problemset/problem/219/A)|Codeforces|2|\n|<ul><li>- [ ] Done</li></ul>|42|[Puzzles](http://codeforces.com/problemset/problem/337/A)|Codeforces|2|\n|<ul><li>- [ ] Done</li></ul>|43|[Next Test](http://codeforces.com/problemset/problem/27/A)|Codeforces|3|\n|<ul><li>- [ ] Done</li></ul>|44|[Laptops](http://codeforces.com/problemset/problem/456/A)|Codeforces|3|\n|<ul><li>- [ ] Done</li></ul>|45|[Pashmak and Garden](http://codeforces.com/problemset/problem/459/A)|Codeforces|3|\n|<ul><li>- [ ] Done</li></ul>|46|[Lucky Sum](http://codeforces.com/problemset/problem/121/A)|Codeforces|3|\n|<ul><li>- [ ] Done</li></ul>|47|[Kuriyama Mirai's Stones](http://codeforces.com/problemset/problem/433/B)|Codeforces|3|\n|<ul><li>- [ ] Done</li></ul>|48|[Kitahara Haruki's Gift](http://codeforces.com/problemset/problem/433/A)|Codeforces|3|\n|<ul><li>- [ ] Done</li></ul>|49|[The Fibonacci Segment](http://codeforces.com/problemset/problem/365/B)|Codeforces|3|\n|<ul><li>- [ ] Done</li></ul>|50|[Difference Row](http://codeforces.com/problemset/problem/347/A)|Codeforces|3|\n|<ul><li>- [ ] Done</li></ul>|51|[Little Pigs and Wolves](http://codeforces.com/problemset/problem/116/B)|Codeforces|3|\n|<ul><li>- [ ] Done</li></ul>|52|[T-primes](http://codeforces.com/problemset/problem/230/B)|Codeforces|3|\n|<ul><li>- [ ] Done</li></ul>|53|[Xenia and Divisors](http://codeforces.com/problemset/problem/342/A)|Codeforces|3|\n|<ul><li>- [ ] Done</li></ul>|54|[Learning Languages](http://codeforces.com/problemset/problem/277/A)|Codeforces|3|\n|<ul><li>- [ ] Done</li></ul>|55|[The Child and Toy](http://codeforces.com/problemset/problem/437/C)|Codeforces|3|\n|<ul><li>- [ ] Done</li></ul>|56|[Sail](http://codeforces.com/problemset/problem/298/B)|Codeforces|3|\n|<ul><li>- [ ] Done</li></ul>|57|[Find Marble](http://codeforces.com/problemset/problem/285/B)|Codeforces|3|\n|<ul><li>- [ ] Done</li></ul>|58|[Free Cash](http://codeforces.com/problemset/problem/237/A)|Codeforces|3|\n|<ul><li>- [ ] Done</li></ul>|59|[Roma and Changing Signs](http://codeforces.com/problemset/problem/262/B)|Codeforces|3|\n|<ul><li>- [ ] Done</li></ul>|60|[Dreamoon and WiFi](http://codeforces.com/problemset/problem/476/B)|Codeforces|3|\n|<ul><li>- [ ] Done</li></ul>|61|[Dima and Staircase](http://codeforces.com/problemset/problem/272/C)|Codeforces|3|\n|<ul><li>- [ ] Done</li></ul>|62|[Comparing Strings](http://codeforces.com/problemset/problem/186/A)|Codeforces|3|\n|<ul><li>- [ ] Done</li></ul>|63|[Sereja and Array](http://codeforces.com/problemset/problem/315/B)|Codeforces|3|\n|<ul><li>- [ ] Done</li></ul>|64|[Sereja and Suffixes](http://codeforces.com/problemset/problem/368/B)|Codeforces|3|\n|<ul><li>- [ ] Done</li></ul>|65|[Pashmak and Flowers](http://codeforces.com/problemset/problem/459/B)|Codeforces|3|\n|<ul><li>- [ ] Done</li></ul>|66|[Simple Molecules](http://codeforces.com/problemset/problem/344/B)|Codeforces|3|\n|<ul><li>- [ ] Done</li></ul>|67|[DZY Loves Chessboard](http://codeforces.com/problemset/problem/445/A)|Codeforces|3|\n|<ul><li>- [ ] Done</li></ul>|68|[Fixed Points](http://codeforces.com/problemset/problem/347/B)|Codeforces|3|\n|<ul><li>- [ ] Done</li></ul>|69|[Hungry Sequence](http://codeforces.com/problemset/problem/327/B)|Codeforces|3|\n|<ul><li>- [ ] Done</li></ul>|70|[Building Permutation](http://codeforces.com/problemset/problem/285/C)|Codeforces|3|\n|<ul><li>- [ ] Done</li></ul>|71|[Road Construction](http://codeforces.com/problemset/problem/330/B)|Codeforces|3|\n|<ul><li>- [ ] Done</li></ul>|72|[Little Girl and Game](http://codeforces.com/problemset/problem/276/B)|Codeforces|3|\n|<ul><li>- [ ] Done</li></ul>|73|[Fence](http://codeforces.com/problemset/problem/363/B)|Codeforces|3|\n|<ul><li>- [ ] Done</li></ul>|74|[Flipping Game](http://codeforces.com/problemset/problem/327/A)|Codeforces|3|\n|<ul><li>- [ ] Done</li></ul>|75|[Cut Ribbon](http://codeforces.com/problemset/problem/189/A)|Codeforces|3|\n|<ul><li>- [ ] Done</li></ul>|76|[Ilya and Queries](http://codeforces.com/problemset/problem/313/B)|Codeforces|3|\n|<ul><li>- [ ] Done</li></ul>|77|[Little Dima and Equation](http://codeforces.com/problemset/problem/460/B)|Codeforces|4|\n|<ul><li>- [ ] Done</li></ul>|78|[George and Job](http://codeforces.com/problemset/problem/467/C)|Codeforces|4|\n|<ul><li>- [ ] Done</li></ul>|79|[Sereja and Bottles](http://codeforces.com/problemset/problem/315/A)|Codeforces|4|\n|<ul><li>- [ ] Done</li></ul>|80|[Routine Problem](http://codeforces.com/problemset/problem/337/B)|Codeforces|4|\n|<ul><li>- [ ] Done</li></ul>|81|[Hamburgers](http://codeforces.com/problemset/problem/371/C)|Codeforces|4|\n|<ul><li>- [ ] Done</li></ul>|82|[Jzzhu and Sequences](http://codeforces.com/problemset/problem/450/B)|Codeforces|4|\n|<ul><li>- [ ] Done</li></ul>|83|[Flag Day](http://codeforces.com/problemset/problem/357/B)|Codeforces|4|\n|<ul><li>- [ ] Done</li></ul>|84|[Valera and Fruits](http://codeforces.com/problemset/problem/441/B)|Codeforces|4|\n|<ul><li>- [ ] Done</li></ul>|85|[Fox Dividing Cheese](http://codeforces.com/problemset/problem/371/B)|Codeforces|4|\n|<ul><li>- [ ] Done</li></ul>|86|[Dima and Continuous Line](http://codeforces.com/problemset/problem/358/A)|Codeforces|4|\n|<ul><li>- [ ] Done</li></ul>|87|[Lucky Numbers (easy)](http://codeforces.com/problemset/problem/96/B)|Codeforces|4|\n|<ul><li>- [ ] Done</li></ul>|88|[Coach](http://codeforces.com/problemset/problem/300/B)|Codeforces|4|\n|<ul><li>- [ ] Done</li></ul>|89|[Ciel and Flowers](http://codeforces.com/problemset/problem/322/B)|Codeforces|4|\n|<ul><li>- [ ] Done</li></ul>|90|[k-Tree](http://codeforces.com/problemset/problem/431/C)|Codeforces|4|\n|<ul><li>- [ ] Done</li></ul>|91|[Maximum Absurdity](http://codeforces.com/problemset/problem/332/B)|Codeforces|4|\n|<ul><li>- [ ] Done</li></ul>|92|[Fixing Typos](http://codeforces.com/problemset/problem/363/C)|Codeforces|4|\n|<ul><li>- [ ] Done</li></ul>|93|[Exams](http://codeforces.com/problemset/problem/479/C)|Codeforces|4|\n|<ul><li>- [ ] Done</li></ul>|94|[Boredom](http://codeforces.com/problemset/problem/455/A)|Codeforces|4|\n|<ul><li>- [ ] Done</li></ul>|95|[Prime Matrix](http://codeforces.com/problemset/problem/271/B)|Codeforces|4|\n|<ul><li>- [ ] Done</li></ul>|96|[Books](http://codeforces.com/problemset/problem/279/B)|Codeforces|4|\n|<ul><li>- [ ] Done</li></ul>|97|[Little Girl and Maximum Sum](http://codeforces.com/problemset/problem/276/C)|Codeforces|4|\n|<ul><li>- [ ] Done</li></ul>|98|[Tetrahedron](http://codeforces.com/problemset/problem/166/E)|Codeforces|4|\n|<ul><li>- [ ] Done</li></ul>|99|[XOR and OR](http://codeforces.com/problemset/problem/282/C)|Codeforces|4|\n|<ul><li>- [ ] Done</li></ul>|100|[Painting Eggs](http://codeforces.com/problemset/problem/282/B)|Codeforces|4|\n"
  },
  {
    "path": "ladders/13. 1400 <= Codeforces Rating <= 1499/README.md",
    "content": "# Ladder Name: 13 - 1400 <= Codeforces Rating <= 1499\n## Description\n For users satisfying this condition\n## Difficulty Level: 3\n\n| Checkbox | ID  | Problem Name | Online Judge | Difficulty |\n|---|:---:|:---:|---|---|\n|<ul><li>- [ ] Done</li></ul>|1|[Choosing Teams](http://codeforces.com/problemset/problem/432/A)|Codeforces|1|\n|<ul><li>- [ ] Done</li></ul>|2|[Nearly Lucky Number](http://codeforces.com/problemset/problem/110/A)|Codeforces|1|\n|<ul><li>- [ ] Done</li></ul>|3|[Amusing Joke](http://codeforces.com/problemset/problem/141/A)|Codeforces|1|\n|<ul><li>- [ ] Done</li></ul>|4|[Drinks](http://codeforces.com/problemset/problem/200/B)|Codeforces|1|\n|<ul><li>- [ ] Done</li></ul>|5|[Way Too Long Words](http://codeforces.com/problemset/problem/71/A)|Codeforces|1|\n|<ul><li>- [ ] Done</li></ul>|6|[Presents](http://codeforces.com/problemset/problem/136/A)|Codeforces|1|\n|<ul><li>- [ ] Done</li></ul>|7|[Lunch Rush](http://codeforces.com/problemset/problem/276/A)|Codeforces|1|\n|<ul><li>- [ ] Done</li></ul>|8|[Soft Drinking](http://codeforces.com/problemset/problem/151/A)|Codeforces|1|\n|<ul><li>- [ ] Done</li></ul>|9|[Boy or Girl](http://codeforces.com/problemset/problem/236/A)|Codeforces|1|\n|<ul><li>- [ ] Done</li></ul>|10|[Dividing Orange](http://codeforces.com/problemset/problem/244/A)|Codeforces|1|\n|<ul><li>- [ ] Done</li></ul>|11|[Queue at the School](http://codeforces.com/problemset/problem/266/B)|Codeforces|1|\n|<ul><li>- [ ] Done</li></ul>|12|[HQ9+](http://codeforces.com/problemset/problem/133/A)|Codeforces|1|\n|<ul><li>- [ ] Done</li></ul>|13|[I_love_\\%username\\%](http://codeforces.com/problemset/problem/155/A)|Codeforces|1|\n|<ul><li>- [ ] Done</li></ul>|14|[Cakeminator](http://codeforces.com/problemset/problem/330/A)|Codeforces|1|\n|<ul><li>- [ ] Done</li></ul>|15|[Word](http://codeforces.com/problemset/problem/59/A)|Codeforces|1|\n|<ul><li>- [ ] Done</li></ul>|16|[Stones on the Table](http://codeforces.com/problemset/problem/266/A)|Codeforces|1|\n|<ul><li>- [ ] Done</li></ul>|17|[Beautiful Year](http://codeforces.com/problemset/problem/271/A)|Codeforces|1|\n|<ul><li>- [ ] Done</li></ul>|18|[Team](http://codeforces.com/problemset/problem/231/A)|Codeforces|1|\n|<ul><li>- [ ] Done</li></ul>|19|[Insomnia cure](http://codeforces.com/problemset/problem/148/A)|Codeforces|1|\n|<ul><li>- [ ] Done</li></ul>|20|[Vanya and Cards](http://codeforces.com/problemset/problem/401/A)|Codeforces|1|\n|<ul><li>- [ ] Done</li></ul>|21|[Tram](http://codeforces.com/problemset/problem/116/A)|Codeforces|1|\n|<ul><li>- [ ] Done</li></ul>|22|[Petya and Strings](http://codeforces.com/problemset/problem/112/A)|Codeforces|1|\n|<ul><li>- [ ] Done</li></ul>|23|[Array](http://codeforces.com/problemset/problem/300/A)|Codeforces|2|\n|<ul><li>- [ ] Done</li></ul>|24|[Little Elephant and Chess](http://codeforces.com/problemset/problem/259/A)|Codeforces|2|\n|<ul><li>- [ ] Done</li></ul>|25|[Dubstep](http://codeforces.com/problemset/problem/208/A)|Codeforces|2|\n|<ul><li>- [ ] Done</li></ul>|26|[Permutation](http://codeforces.com/problemset/problem/137/B)|Codeforces|2|\n|<ul><li>- [ ] Done</li></ul>|27|[Magic Numbers](http://codeforces.com/problemset/problem/320/A)|Codeforces|2|\n|<ul><li>- [ ] Done</li></ul>|28|[Heads or Tails](http://codeforces.com/problemset/problem/242/A)|Codeforces|2|\n|<ul><li>- [ ] Done</li></ul>|29|[Present from Lena](http://codeforces.com/problemset/problem/118/B)|Codeforces|2|\n|<ul><li>- [ ] Done</li></ul>|30|[Marks](http://codeforces.com/problemset/problem/152/A)|Codeforces|2|\n|<ul><li>- [ ] Done</li></ul>|31|[Xenia and Ringroad](http://codeforces.com/problemset/problem/339/B)|Codeforces|2|\n|<ul><li>- [ ] Done</li></ul>|32|[Lucky Division](http://codeforces.com/problemset/problem/122/A)|Codeforces|2|\n|<ul><li>- [ ] Done</li></ul>|33|[Twins](http://codeforces.com/problemset/problem/160/A)|Codeforces|2|\n|<ul><li>- [ ] Done</li></ul>|34|[Translation](http://codeforces.com/problemset/problem/41/A)|Codeforces|2|\n|<ul><li>- [ ] Done</li></ul>|35|[Chat room](http://codeforces.com/problemset/problem/58/A)|Codeforces|2|\n|<ul><li>- [ ] Done</li></ul>|36|[Football](http://codeforces.com/problemset/problem/96/A)|Codeforces|2|\n|<ul><li>- [ ] Done</li></ul>|37|[Ilya and Bank Account](http://codeforces.com/problemset/problem/313/A)|Codeforces|2|\n|<ul><li>- [ ] Done</li></ul>|38|[Parallelepiped](http://codeforces.com/problemset/problem/224/A)|Codeforces|2|\n|<ul><li>- [ ] Done</li></ul>|39|[String Task](http://codeforces.com/problemset/problem/118/A)|Codeforces|2|\n|<ul><li>- [ ] Done</li></ul>|40|[k-String](http://codeforces.com/problemset/problem/219/A)|Codeforces|2|\n|<ul><li>- [ ] Done</li></ul>|41|[Dragons](http://codeforces.com/problemset/problem/230/A)|Codeforces|2|\n|<ul><li>- [ ] Done</li></ul>|42|[Puzzles](http://codeforces.com/problemset/problem/337/A)|Codeforces|2|\n|<ul><li>- [ ] Done</li></ul>|43|[Playing Cubes](http://codeforces.com/problemset/problem/257/B)|Codeforces|3|\n|<ul><li>- [ ] Done</li></ul>|44|[Two Bags of Potatoes](http://codeforces.com/problemset/problem/239/A)|Codeforces|3|\n|<ul><li>- [ ] Done</li></ul>|45|[Big Segment](http://codeforces.com/problemset/problem/242/B)|Codeforces|3|\n|<ul><li>- [ ] Done</li></ul>|46|[Pashmak and Flowers](http://codeforces.com/problemset/problem/459/B)|Codeforces|3|\n|<ul><li>- [ ] Done</li></ul>|47|[Building Permutation](http://codeforces.com/problemset/problem/285/C)|Codeforces|3|\n|<ul><li>- [ ] Done</li></ul>|48|[Boys and Girls](http://codeforces.com/problemset/problem/253/A)|Codeforces|3|\n|<ul><li>- [ ] Done</li></ul>|49|[Cinema Line](http://codeforces.com/problemset/problem/349/A)|Codeforces|3|\n|<ul><li>- [ ] Done</li></ul>|50|[Rank List](http://codeforces.com/problemset/problem/166/A)|Codeforces|3|\n|<ul><li>- [ ] Done</li></ul>|51|[Points on Line](http://codeforces.com/problemset/problem/251/A)|Codeforces|3|\n|<ul><li>- [ ] Done</li></ul>|52|[Little Girl and Game](http://codeforces.com/problemset/problem/276/B)|Codeforces|3|\n|<ul><li>- [ ] Done</li></ul>|53|[Little Pony and Expected Maximum](http://codeforces.com/problemset/problem/453/A)|Codeforces|3|\n|<ul><li>- [ ] Done</li></ul>|54|[Cosmic Tables](http://codeforces.com/problemset/problem/222/B)|Codeforces|3|\n|<ul><li>- [ ] Done</li></ul>|55|[Lucky Sum of Digits](http://codeforces.com/problemset/problem/109/A)|Codeforces|3|\n|<ul><li>- [ ] Done</li></ul>|56|[Ice Skating](http://codeforces.com/problemset/problem/217/A)|Codeforces|3|\n|<ul><li>- [ ] Done</li></ul>|57|[Sereja and Suffixes](http://codeforces.com/problemset/problem/368/B)|Codeforces|3|\n|<ul><li>- [ ] Done</li></ul>|58|[Free Cash](http://codeforces.com/problemset/problem/237/A)|Codeforces|3|\n|<ul><li>- [ ] Done</li></ul>|59|[Mashmokh and ACM](http://codeforces.com/problemset/problem/414/B)|Codeforces|3|\n|<ul><li>- [ ] Done</li></ul>|60|[Domino](http://codeforces.com/problemset/problem/353/A)|Codeforces|3|\n|<ul><li>- [ ] Done</li></ul>|61|[Hungry Sequence](http://codeforces.com/problemset/problem/327/B)|Codeforces|3|\n|<ul><li>- [ ] Done</li></ul>|62|[Ilya and Queries](http://codeforces.com/problemset/problem/313/B)|Codeforces|3|\n|<ul><li>- [ ] Done</li></ul>|63|[Fence](http://codeforces.com/problemset/problem/363/B)|Codeforces|3|\n|<ul><li>- [ ] Done</li></ul>|64|[T-primes](http://codeforces.com/problemset/problem/230/B)|Codeforces|3|\n|<ul><li>- [ ] Done</li></ul>|65|[Flipping Game](http://codeforces.com/problemset/problem/327/A)|Codeforces|3|\n|<ul><li>- [ ] Done</li></ul>|66|[Cut Ribbon](http://codeforces.com/problemset/problem/189/A)|Codeforces|3|\n|<ul><li>- [ ] Done</li></ul>|67|[Counting Kangaroos is Fun](http://codeforces.com/problemset/problem/372/A)|Codeforces|4|\n|<ul><li>- [ ] Done</li></ul>|68|[Median](http://codeforces.com/problemset/problem/166/C)|Codeforces|4|\n|<ul><li>- [ ] Done</li></ul>|69|[Ciel and Flowers](http://codeforces.com/problemset/problem/322/B)|Codeforces|4|\n|<ul><li>- [ ] Done</li></ul>|70|[Vanya and Exams](http://codeforces.com/problemset/problem/492/C)|Codeforces|4|\n|<ul><li>- [ ] Done</li></ul>|71|[Fixing Typos](http://codeforces.com/problemset/problem/363/C)|Codeforces|4|\n|<ul><li>- [ ] Done</li></ul>|72|[LCM Challenge](http://codeforces.com/problemset/problem/235/A)|Codeforces|4|\n|<ul><li>- [ ] Done</li></ul>|73|[Caesar's Legions](http://codeforces.com/problemset/problem/118/D)|Codeforces|4|\n|<ul><li>- [ ] Done</li></ul>|74|[Xenia and Bit Operations](http://codeforces.com/problemset/problem/339/D)|Codeforces|4|\n|<ul><li>- [ ] Done</li></ul>|75|[Little Girl and Maximum Sum](http://codeforces.com/problemset/problem/276/C)|Codeforces|4|\n|<ul><li>- [ ] Done</li></ul>|76|[Palindrome Transformation](http://codeforces.com/problemset/problem/486/C)|Codeforces|4|\n|<ul><li>- [ ] Done</li></ul>|77|[Array](http://codeforces.com/problemset/problem/224/B)|Codeforces|4|\n|<ul><li>- [ ] Done</li></ul>|78|[Factory](http://codeforces.com/problemset/problem/485/A)|Codeforces|4|\n|<ul><li>- [ ] Done</li></ul>|79|[Ping-Pong (Easy Version)](http://codeforces.com/problemset/problem/320/B)|Codeforces|4|\n|<ul><li>- [ ] Done</li></ul>|80|[Routine Problem](http://codeforces.com/problemset/problem/337/B)|Codeforces|4|\n|<ul><li>- [ ] Done</li></ul>|81|[Tourist Problem](http://codeforces.com/problemset/problem/340/C)|Codeforces|4|\n|<ul><li>- [ ] Done</li></ul>|82|[Color Stripe](http://codeforces.com/problemset/problem/219/C)|Codeforces|4|\n|<ul><li>- [ ] Done</li></ul>|83|[Maze](http://codeforces.com/problemset/problem/377/A)|Codeforces|4|\n|<ul><li>- [ ] Done</li></ul>|84|[Valera and Tubes ](http://codeforces.com/problemset/problem/441/C)|Codeforces|4|\n|<ul><li>- [ ] Done</li></ul>|85|[Polo the Penguin and Matrix](http://codeforces.com/problemset/problem/289/B)|Codeforces|4|\n|<ul><li>- [ ] Done</li></ul>|86|[Boredom](http://codeforces.com/problemset/problem/455/A)|Codeforces|4|\n|<ul><li>- [ ] Done</li></ul>|87|[Funky Numbers](http://codeforces.com/problemset/problem/192/A)|Codeforces|4|\n|<ul><li>- [ ] Done</li></ul>|88|[George and Job](http://codeforces.com/problemset/problem/467/C)|Codeforces|4|\n|<ul><li>- [ ] Done</li></ul>|89|[Xenia and Weights](http://codeforces.com/problemset/problem/339/C)|Codeforces|4|\n|<ul><li>- [ ] Done</li></ul>|90|[Physics Practical](http://codeforces.com/problemset/problem/253/B)|Codeforces|4|\n|<ul><li>- [ ] Done</li></ul>|91|[Little Pony and Sort by Shift](http://codeforces.com/problemset/problem/454/B)|Codeforces|4|\n|<ul><li>- [ ] Done</li></ul>|92|[Bombs](http://codeforces.com/problemset/problem/350/C)|Codeforces|4|\n|<ul><li>- [ ] Done</li></ul>|93|[Number of Ways](http://codeforces.com/problemset/problem/466/C)|Codeforces|4|\n|<ul><li>- [ ] Done</li></ul>|94|[Team](http://codeforces.com/problemset/problem/401/C)|Codeforces|4|\n|<ul><li>- [ ] Done</li></ul>|95|[Another Problem on Strings](http://codeforces.com/problemset/problem/165/C)|Codeforces|4|\n|<ul><li>- [ ] Done</li></ul>|96|[Color the Fence](http://codeforces.com/problemset/problem/349/B)|Codeforces|4|\n|<ul><li>- [ ] Done</li></ul>|97|[Tetrahedron](http://codeforces.com/problemset/problem/166/E)|Codeforces|4|\n|<ul><li>- [ ] Done</li></ul>|98|[k-Tree](http://codeforces.com/problemset/problem/431/C)|Codeforces|4|\n|<ul><li>- [ ] Done</li></ul>|99|[Vasya and Basketball](http://codeforces.com/problemset/problem/493/C)|Codeforces|5|\n|<ul><li>- [ ] Done</li></ul>|100|[Gargari and Bishops](http://codeforces.com/problemset/problem/463/C)|Codeforces|5|\n"
  },
  {
    "path": "ladders/14. 1500 <= Codeforces Rating <= 1599/README.md",
    "content": "# Ladder Name: 14 - 1500 <= Codeforces Rating <= 1599\n## Description\n For users satisfying this condition\n## Difficulty Level: 3\n\n| Checkbox | ID  | Problem Name | Online Judge | Difficulty |\n|---|:---:|:---:|---|---|\n|<ul><li>- [ ] Done</li></ul>|1|[Presents](http://codeforces.com/problemset/problem/136/A)|Codeforces|1|\n|<ul><li>- [ ] Done</li></ul>|2|[Nearly Lucky Number](http://codeforces.com/problemset/problem/110/A)|Codeforces|1|\n|<ul><li>- [ ] Done</li></ul>|3|[Petya and Strings](http://codeforces.com/problemset/problem/112/A)|Codeforces|1|\n|<ul><li>- [ ] Done</li></ul>|4|[Tram](http://codeforces.com/problemset/problem/116/A)|Codeforces|1|\n|<ul><li>- [ ] Done</li></ul>|5|[Ultra-Fast Mathematician](http://codeforces.com/problemset/problem/61/A)|Codeforces|1|\n|<ul><li>- [ ] Done</li></ul>|6|[Amusing Joke](http://codeforces.com/problemset/problem/141/A)|Codeforces|1|\n|<ul><li>- [ ] Done</li></ul>|7|[Way Too Long Words](http://codeforces.com/problemset/problem/71/A)|Codeforces|1|\n|<ul><li>- [ ] Done</li></ul>|8|[Xenia and Ringroad](http://codeforces.com/problemset/problem/339/B)|Codeforces|2|\n|<ul><li>- [ ] Done</li></ul>|9|[Slightly Decreasing Permutations](http://codeforces.com/problemset/problem/285/A)|Codeforces|2|\n|<ul><li>- [ ] Done</li></ul>|10|[Football](http://codeforces.com/problemset/problem/96/A)|Codeforces|2|\n|<ul><li>- [ ] Done</li></ul>|11|[Caisa and Pylons](http://codeforces.com/problemset/problem/463/B)|Codeforces|2|\n|<ul><li>- [ ] Done</li></ul>|12|[Present from Lena](http://codeforces.com/problemset/problem/118/B)|Codeforces|2|\n|<ul><li>- [ ] Done</li></ul>|13|[k-String](http://codeforces.com/problemset/problem/219/A)|Codeforces|2|\n|<ul><li>- [ ] Done</li></ul>|14|[Fancy Fence](http://codeforces.com/problemset/problem/270/A)|Codeforces|2|\n|<ul><li>- [ ] Done</li></ul>|15|[Chat room](http://codeforces.com/problemset/problem/58/A)|Codeforces|2|\n|<ul><li>- [ ] Done</li></ul>|16|[Contest](http://codeforces.com/problemset/problem/501/A)|Codeforces|2|\n|<ul><li>- [ ] Done</li></ul>|17|[Twins](http://codeforces.com/problemset/problem/160/A)|Codeforces|2|\n|<ul><li>- [ ] Done</li></ul>|18|[Puzzles](http://codeforces.com/problemset/problem/337/A)|Codeforces|2|\n|<ul><li>- [ ] Done</li></ul>|19|[String Task](http://codeforces.com/problemset/problem/118/A)|Codeforces|2|\n|<ul><li>- [ ] Done</li></ul>|20|[Mashmokh and ACM](http://codeforces.com/problemset/problem/414/B)|Codeforces|3|\n|<ul><li>- [ ] Done</li></ul>|21|[The Child and Toy](http://codeforces.com/problemset/problem/437/C)|Codeforces|3|\n|<ul><li>- [ ] Done</li></ul>|22|[Fence](http://codeforces.com/problemset/problem/363/B)|Codeforces|3|\n|<ul><li>- [ ] Done</li></ul>|23|[T-primes](http://codeforces.com/problemset/problem/230/B)|Codeforces|3|\n|<ul><li>- [ ] Done</li></ul>|24|[Rank List](http://codeforces.com/problemset/problem/166/A)|Codeforces|3|\n|<ul><li>- [ ] Done</li></ul>|25|[Fox and Box Accumulation](http://codeforces.com/problemset/problem/388/A)|Codeforces|3|\n|<ul><li>- [ ] Done</li></ul>|26|[Cinema Line](http://codeforces.com/problemset/problem/349/A)|Codeforces|3|\n|<ul><li>- [ ] Done</li></ul>|27|[Escape from Stones](http://codeforces.com/problemset/problem/264/A)|Codeforces|3|\n|<ul><li>- [ ] Done</li></ul>|28|[Laptops](http://codeforces.com/problemset/problem/456/A)|Codeforces|3|\n|<ul><li>- [ ] Done</li></ul>|29|[Little Elephant and Bits](http://codeforces.com/problemset/problem/258/A)|Codeforces|3|\n|<ul><li>- [ ] Done</li></ul>|30|[Flipping Game](http://codeforces.com/problemset/problem/327/A)|Codeforces|3|\n|<ul><li>- [ ] Done</li></ul>|31|[Mashmokh and ACM](http://codeforces.com/problemset/problem/414/B)|Codeforces|3|\n|<ul><li>- [ ] Done</li></ul>|32|[Dima and Staircase](http://codeforces.com/problemset/problem/272/C)|Codeforces|3|\n|<ul><li>- [ ] Done</li></ul>|33|[Building Permutation](http://codeforces.com/problemset/problem/285/C)|Codeforces|3|\n|<ul><li>- [ ] Done</li></ul>|34|[Ilya and Queries](http://codeforces.com/problemset/problem/313/B)|Codeforces|3|\n|<ul><li>- [ ] Done</li></ul>|35|[Kuriyama Mirai's Stones](http://codeforces.com/problemset/problem/433/B)|Codeforces|3|\n|<ul><li>- [ ] Done</li></ul>|36|[Party](http://codeforces.com/problemset/problem/115/A)|Codeforces|3|\n|<ul><li>- [ ] Done</li></ul>|37|[Ice Skating](http://codeforces.com/problemset/problem/217/A)|Codeforces|3|\n|<ul><li>- [ ] Done</li></ul>|38|[Cut Ribbon](http://codeforces.com/problemset/problem/189/A)|Codeforces|3|\n|<ul><li>- [ ] Done</li></ul>|39|[Booking System](http://codeforces.com/problemset/problem/416/C)|Codeforces|4|\n|<ul><li>- [ ] Done</li></ul>|40|[Fox And Names](http://codeforces.com/problemset/problem/510/C)|Codeforces|4|\n|<ul><li>- [ ] Done</li></ul>|41|[Fox And Two Dots](http://codeforces.com/problemset/problem/510/B)|Codeforces|4|\n|<ul><li>- [ ] Done</li></ul>|42|[Pocket Book](http://codeforces.com/problemset/problem/152/C)|Codeforces|4|\n|<ul><li>- [ ] Done</li></ul>|43|[Array](http://codeforces.com/problemset/problem/224/B)|Codeforces|4|\n|<ul><li>- [ ] Done</li></ul>|44|[Ladder](http://codeforces.com/problemset/problem/279/C)|Codeforces|4|\n|<ul><li>- [ ] Done</li></ul>|45|[Divisibility by Eight](http://codeforces.com/problemset/problem/550/C)|Codeforces|4|\n|<ul><li>- [ ] Done</li></ul>|46|[Little Elephant and Problem](http://codeforces.com/problemset/problem/220/A)|Codeforces|4|\n|<ul><li>- [ ] Done</li></ul>|47|[Ciel and Flowers](http://codeforces.com/problemset/problem/322/B)|Codeforces|4|\n|<ul><li>- [ ] Done</li></ul>|48|[Convex Shape](http://codeforces.com/problemset/problem/275/B)|Codeforces|4|\n|<ul><li>- [ ] Done</li></ul>|49|[Maze](http://codeforces.com/problemset/problem/377/A)|Codeforces|4|\n|<ul><li>- [ ] Done</li></ul>|50|[View Angle](http://codeforces.com/problemset/problem/257/C)|Codeforces|4|\n|<ul><li>- [ ] Done</li></ul>|51|[Mr. Kitayuta, the Treasure Hunter](http://codeforces.com/problemset/problem/505/C)|Codeforces|4|\n|<ul><li>- [ ] Done</li></ul>|52|[Maximum Absurdity](http://codeforces.com/problemset/problem/332/B)|Codeforces|4|\n|<ul><li>- [ ] Done</li></ul>|53|[Color Stripe](http://codeforces.com/problemset/problem/219/C)|Codeforces|4|\n|<ul><li>- [ ] Done</li></ul>|54|[Checkposts](http://codeforces.com/problemset/problem/427/C)|Codeforces|4|\n|<ul><li>- [ ] Done</li></ul>|55|[Misha and Forest](http://codeforces.com/problemset/problem/501/C)|Codeforces|4|\n|<ul><li>- [ ] Done</li></ul>|56|[Kolya and Tandem Repeat](http://codeforces.com/problemset/problem/443/B)|Codeforces|4|\n|<ul><li>- [ ] Done</li></ul>|57|[Anya and Ghosts](http://codeforces.com/problemset/problem/508/C)|Codeforces|4|\n|<ul><li>- [ ] Done</li></ul>|58|[Removing Columns](http://codeforces.com/problemset/problem/496/C)|Codeforces|4|\n|<ul><li>- [ ] Done</li></ul>|59|[Beautiful Numbers](http://codeforces.com/problemset/problem/300/C)|Codeforces|4|\n|<ul><li>- [ ] Done</li></ul>|60|[Vasya and Chess](http://codeforces.com/problemset/problem/493/D)|Codeforces|4|\n|<ul><li>- [ ] Done</li></ul>|61|[Hamburgers](http://codeforces.com/problemset/problem/371/C)|Codeforces|4|\n|<ul><li>- [ ] Done</li></ul>|62|[Colorful Graph](http://codeforces.com/problemset/problem/246/D)|Codeforces|4|\n|<ul><li>- [ ] Done</li></ul>|63|[To Add or Not to Add](http://codeforces.com/problemset/problem/231/C)|Codeforces|4|\n|<ul><li>- [ ] Done</li></ul>|64|[Xenia and Bit Operations](http://codeforces.com/problemset/problem/339/D)|Codeforces|4|\n|<ul><li>- [ ] Done</li></ul>|65|[Little Girl and Maximum XOR](http://codeforces.com/problemset/problem/276/D)|Codeforces|4|\n|<ul><li>- [ ] Done</li></ul>|66|[Arithmetic Progression](http://codeforces.com/problemset/problem/382/C)|Codeforces|4|\n|<ul><li>- [ ] Done</li></ul>|67|[Friends and Presents](http://codeforces.com/problemset/problem/483/B)|Codeforces|4|\n|<ul><li>- [ ] Done</li></ul>|68|[Barcode](http://codeforces.com/problemset/problem/225/C)|Codeforces|4|\n|<ul><li>- [ ] Done</li></ul>|69|[Xenia and Weights](http://codeforces.com/problemset/problem/339/C)|Codeforces|4|\n|<ul><li>- [ ] Done</li></ul>|70|[Little Dima and Equation](http://codeforces.com/problemset/problem/460/B)|Codeforces|4|\n|<ul><li>- [ ] Done</li></ul>|71|[Long Jumps](http://codeforces.com/problemset/problem/479/D)|Codeforces|4|\n|<ul><li>- [ ] Done</li></ul>|72|[Tetrahedron](http://codeforces.com/problemset/problem/166/E)|Codeforces|4|\n|<ul><li>- [ ] Done</li></ul>|73|[Physics Practical](http://codeforces.com/problemset/problem/253/B)|Codeforces|4|\n|<ul><li>- [ ] Done</li></ul>|74|[Boredom](http://codeforces.com/problemset/problem/455/A)|Codeforces|4|\n|<ul><li>- [ ] Done</li></ul>|75|[Valera and Tubes ](http://codeforces.com/problemset/problem/441/C)|Codeforces|4|\n|<ul><li>- [ ] Done</li></ul>|76|[Valera and Elections](http://codeforces.com/problemset/problem/369/C)|Codeforces|4|\n|<ul><li>- [ ] Done</li></ul>|77|[Little Girl and Maximum Sum](http://codeforces.com/problemset/problem/276/C)|Codeforces|4|\n|<ul><li>- [ ] Done</li></ul>|78|[George and Job](http://codeforces.com/problemset/problem/467/C)|Codeforces|4|\n|<ul><li>- [ ] Done</li></ul>|79|[Table Decorations](http://codeforces.com/problemset/problem/478/C)|Codeforces|4|\n|<ul><li>- [ ] Done</li></ul>|80|[k-Tree](http://codeforces.com/problemset/problem/431/C)|Codeforces|4|\n|<ul><li>- [ ] Done</li></ul>|81|[Color the Fence](http://codeforces.com/problemset/problem/349/B)|Codeforces|4|\n|<ul><li>- [ ] Done</li></ul>|82|[Polo the Penguin and Matrix](http://codeforces.com/problemset/problem/289/B)|Codeforces|4|\n|<ul><li>- [ ] Done</li></ul>|83|[Another Problem on Strings](http://codeforces.com/problemset/problem/165/C)|Codeforces|4|\n|<ul><li>- [ ] Done</li></ul>|84|[Exams](http://codeforces.com/problemset/problem/479/C)|Codeforces|4|\n|<ul><li>- [ ] Done</li></ul>|85|[Caesar's Legions](http://codeforces.com/problemset/problem/118/D)|Codeforces|4|\n|<ul><li>- [ ] Done</li></ul>|86|[Beautiful Sets of Points](http://codeforces.com/problemset/problem/268/C)|Codeforces|4|\n|<ul><li>- [ ] Done</li></ul>|87|[Boredom](http://codeforces.com/problemset/problem/455/A)|Codeforces|4|\n|<ul><li>- [ ] Done</li></ul>|88|[Number of Ways](http://codeforces.com/problemset/problem/466/C)|Codeforces|4|\n|<ul><li>- [ ] Done</li></ul>|89|[A and B and Interesting Substrings](http://codeforces.com/problemset/problem/519/D)|Codeforces|5|\n|<ul><li>- [ ] Done</li></ul>|90|[Valid Sets](http://codeforces.com/problemset/problem/486/D)|Codeforces|5|\n|<ul><li>- [ ] Done</li></ul>|91|[Devu and Partitioning of the Array](http://codeforces.com/problemset/problem/439/C)|Codeforces|5|\n|<ul><li>- [ ] Done</li></ul>|92|[Good Substrings](http://codeforces.com/problemset/problem/271/D)|Codeforces|5|\n|<ul><li>- [ ] Done</li></ul>|93|[Wonder Room](http://codeforces.com/problemset/problem/466/B)|Codeforces|5|\n|<ul><li>- [ ] Done</li></ul>|94|[Present](http://codeforces.com/problemset/problem/460/C)|Codeforces|5|\n|<ul><li>- [ ] Done</li></ul>|95|[Painting Fence](http://codeforces.com/problemset/problem/448/C)|Codeforces|5|\n|<ul><li>- [ ] Done</li></ul>|96|[Vasya and Basketball](http://codeforces.com/problemset/problem/493/C)|Codeforces|5|\n|<ul><li>- [ ] Done</li></ul>|97|[Bear and Prime Numbers](http://codeforces.com/problemset/problem/385/C)|Codeforces|5|\n|<ul><li>- [ ] Done</li></ul>|98|[Restore Graph](http://codeforces.com/problemset/problem/404/C)|Codeforces|5|\n|<ul><li>- [ ] Done</li></ul>|99|[Gargari and Bishops](http://codeforces.com/problemset/problem/463/C)|Codeforces|5|\n|<ul><li>- [ ] Done</li></ul>|100|[Multiplication Table](http://codeforces.com/problemset/problem/448/D)|Codeforces|5|\n"
  },
  {
    "path": "ladders/15. 1600 <= Codeforces Rating <= 1699/README.md",
    "content": "# Ladder Name: 15 - 1600 <= Codeforces Rating <= 1699\n## Description\n For users satisfying this condition\n## Difficulty Level: 4\n\n| Checkbox | ID  | Problem Name | Online Judge | Difficulty |\n|---|:---:|:---:|---|---|\n|<ul><li>- [ ] Done</li></ul>|1|[Boy or Girl](http://codeforces.com/problemset/problem/236/A)|Codeforces|1|\n|<ul><li>- [ ] Done</li></ul>|2|[Beautiful Matrix](http://codeforces.com/problemset/problem/263/A)|Codeforces|1|\n|<ul><li>- [ ] Done</li></ul>|3|[Team](http://codeforces.com/problemset/problem/231/A)|Codeforces|1|\n|<ul><li>- [ ] Done</li></ul>|4|[Petya and Strings](http://codeforces.com/problemset/problem/112/A)|Codeforces|1|\n|<ul><li>- [ ] Done</li></ul>|5|[Magnets](http://codeforces.com/problemset/problem/344/A)|Codeforces|1|\n|<ul><li>- [ ] Done</li></ul>|6|[Young Physicist](http://codeforces.com/problemset/problem/69/A)|Codeforces|1|\n|<ul><li>- [ ] Done</li></ul>|7|[Word Capitalization](http://codeforces.com/problemset/problem/281/A)|Codeforces|1|\n|<ul><li>- [ ] Done</li></ul>|8|[Bit++](http://codeforces.com/problemset/problem/282/A)|Codeforces|1|\n|<ul><li>- [ ] Done</li></ul>|9|[Way Too Long Words](http://codeforces.com/problemset/problem/71/A)|Codeforces|1|\n|<ul><li>- [ ] Done</li></ul>|10|[Even Odds](http://codeforces.com/problemset/problem/318/A)|Codeforces|2|\n|<ul><li>- [ ] Done</li></ul>|11|[Dubstep](http://codeforces.com/problemset/problem/208/A)|Codeforces|2|\n|<ul><li>- [ ] Done</li></ul>|12|[Xenia and Ringroad](http://codeforces.com/problemset/problem/339/B)|Codeforces|2|\n|<ul><li>- [ ] Done</li></ul>|13|[Football](http://codeforces.com/problemset/problem/96/A)|Codeforces|2|\n|<ul><li>- [ ] Done</li></ul>|14|[System of Equations](http://codeforces.com/problemset/problem/214/A)|Codeforces|2|\n|<ul><li>- [ ] Done</li></ul>|15|[Lucky Division](http://codeforces.com/problemset/problem/122/A)|Codeforces|2|\n|<ul><li>- [ ] Done</li></ul>|16|[Dragons](http://codeforces.com/problemset/problem/230/A)|Codeforces|2|\n|<ul><li>- [ ] Done</li></ul>|17|[Puzzles](http://codeforces.com/problemset/problem/337/A)|Codeforces|2|\n|<ul><li>- [ ] Done</li></ul>|18|[Chat room](http://codeforces.com/problemset/problem/58/A)|Codeforces|2|\n|<ul><li>- [ ] Done</li></ul>|19|[Dreamoon and WiFi](http://codeforces.com/problemset/problem/476/B)|Codeforces|3|\n|<ul><li>- [ ] Done</li></ul>|20|[Ice Skating](http://codeforces.com/problemset/problem/217/A)|Codeforces|3|\n|<ul><li>- [ ] Done</li></ul>|21|[Learning Languages](http://codeforces.com/problemset/problem/277/A)|Codeforces|3|\n|<ul><li>- [ ] Done</li></ul>|22|[T-primes](http://codeforces.com/problemset/problem/230/B)|Codeforces|3|\n|<ul><li>- [ ] Done</li></ul>|23|[Fence](http://codeforces.com/problemset/problem/363/B)|Codeforces|3|\n|<ul><li>- [ ] Done</li></ul>|24|[Party](http://codeforces.com/problemset/problem/115/A)|Codeforces|3|\n|<ul><li>- [ ] Done</li></ul>|25|[Building Permutation](http://codeforces.com/problemset/problem/285/C)|Codeforces|3|\n|<ul><li>- [ ] Done</li></ul>|26|[Greg and Array](http://codeforces.com/problemset/problem/295/A)|Codeforces|3|\n|<ul><li>- [ ] Done</li></ul>|27|[Cut Ribbon](http://codeforces.com/problemset/problem/189/A)|Codeforces|3|\n|<ul><li>- [ ] Done</li></ul>|28|[Maximum Absurdity](http://codeforces.com/problemset/problem/332/B)|Codeforces|4|\n|<ul><li>- [ ] Done</li></ul>|29|[Vasya and Chess](http://codeforces.com/problemset/problem/493/D)|Codeforces|4|\n|<ul><li>- [ ] Done</li></ul>|30|[Bubble Sort Graph](http://codeforces.com/problemset/problem/340/D)|Codeforces|4|\n|<ul><li>- [ ] Done</li></ul>|31|[Modified GCD](http://codeforces.com/problemset/problem/75/C)|Codeforces|4|\n|<ul><li>- [ ] Done</li></ul>|32|[Palindrome Transformation](http://codeforces.com/problemset/problem/486/C)|Codeforces|4|\n|<ul><li>- [ ] Done</li></ul>|33|[Mafia](http://codeforces.com/problemset/problem/348/A)|Codeforces|4|\n|<ul><li>- [ ] Done</li></ul>|34|[To Add or Not to Add](http://codeforces.com/problemset/problem/231/C)|Codeforces|4|\n|<ul><li>- [ ] Done</li></ul>|35|[Almost Arithmetical Progression](http://codeforces.com/problemset/problem/255/C)|Codeforces|4|\n|<ul><li>- [ ] Done</li></ul>|36|[DZY Loves Sequences](http://codeforces.com/problemset/problem/446/A)|Codeforces|4|\n|<ul><li>- [ ] Done</li></ul>|37|[Ilya and Matrix](http://codeforces.com/problemset/problem/313/C)|Codeforces|4|\n|<ul><li>- [ ] Done</li></ul>|38|[Physics Practical](http://codeforces.com/problemset/problem/253/B)|Codeforces|4|\n|<ul><li>- [ ] Done</li></ul>|39|[Common Divisors](http://codeforces.com/problemset/problem/182/D)|Codeforces|4|\n|<ul><li>- [ ] Done</li></ul>|40|[Valera and Elections](http://codeforces.com/problemset/problem/369/C)|Codeforces|4|\n|<ul><li>- [ ] Done</li></ul>|41|[XOR and OR](http://codeforces.com/problemset/problem/282/C)|Codeforces|4|\n|<ul><li>- [ ] Done</li></ul>|42|[Color the Fence](http://codeforces.com/problemset/problem/349/B)|Codeforces|4|\n|<ul><li>- [ ] Done</li></ul>|43|[Colorful Graph](http://codeforces.com/problemset/problem/246/D)|Codeforces|4|\n|<ul><li>- [ ] Done</li></ul>|44|[Boredom](http://codeforces.com/problemset/problem/455/A)|Codeforces|4|\n|<ul><li>- [ ] Done</li></ul>|45|[Hometask](http://codeforces.com/problemset/problem/214/B)|Codeforces|4|\n|<ul><li>- [ ] Done</li></ul>|46|[k-Tree](http://codeforces.com/problemset/problem/431/C)|Codeforces|4|\n|<ul><li>- [ ] Done</li></ul>|47|[Bombs](http://codeforces.com/problemset/problem/350/C)|Codeforces|4|\n|<ul><li>- [ ] Done</li></ul>|48|[Beautiful Numbers](http://codeforces.com/problemset/problem/300/C)|Codeforces|4|\n|<ul><li>- [ ] Done</li></ul>|49|[Shaass and Bookshelf](http://codeforces.com/problemset/problem/294/B)|Codeforces|4|\n|<ul><li>- [ ] Done</li></ul>|50|[Password](http://codeforces.com/problemset/problem/126/B)|Codeforces|4|\n|<ul><li>- [ ] Done</li></ul>|51|[Fixing Typos](http://codeforces.com/problemset/problem/363/C)|Codeforces|4|\n|<ul><li>- [ ] Done</li></ul>|52|[Zero Tree](http://codeforces.com/problemset/problem/274/B)|Codeforces|4|\n|<ul><li>- [ ] Done</li></ul>|53|[Pipeline](http://codeforces.com/problemset/problem/287/B)|Codeforces|4|\n|<ul><li>- [ ] Done</li></ul>|54|[Greenhouse Effect](http://codeforces.com/problemset/problem/269/B)|Codeforces|4|\n|<ul><li>- [ ] Done</li></ul>|55|[Hamburgers](http://codeforces.com/problemset/problem/371/C)|Codeforces|4|\n|<ul><li>- [ ] Done</li></ul>|56|[Little Girl and Maximum XOR](http://codeforces.com/problemset/problem/276/D)|Codeforces|4|\n|<ul><li>- [ ] Done</li></ul>|57|[Dima and Hares](http://codeforces.com/problemset/problem/358/D)|Codeforces|4|\n|<ul><li>- [ ] Done</li></ul>|58|[Another Problem on Strings](http://codeforces.com/problemset/problem/165/C)|Codeforces|4|\n|<ul><li>- [ ] Done</li></ul>|59|[Cows and Sequence](http://codeforces.com/problemset/problem/283/A)|Codeforces|4|\n|<ul><li>- [ ] Done</li></ul>|60|[Little Girl and Maximum Sum](http://codeforces.com/problemset/problem/276/C)|Codeforces|4|\n|<ul><li>- [ ] Done</li></ul>|61|[Booking System](http://codeforces.com/problemset/problem/416/C)|Codeforces|4|\n|<ul><li>- [ ] Done</li></ul>|62|[Barcode](http://codeforces.com/problemset/problem/225/C)|Codeforces|4|\n|<ul><li>- [ ] Done</li></ul>|63|[Arithmetic Progression](http://codeforces.com/problemset/problem/382/C)|Codeforces|4|\n|<ul><li>- [ ] Done</li></ul>|64|[Ladder](http://codeforces.com/problemset/problem/279/C)|Codeforces|4|\n|<ul><li>- [ ] Done</li></ul>|65|[Caesar's Legions](http://codeforces.com/problemset/problem/118/D)|Codeforces|4|\n|<ul><li>- [ ] Done</li></ul>|66|[Xenia and Bit Operations](http://codeforces.com/problemset/problem/339/D)|Codeforces|4|\n|<ul><li>- [ ] Done</li></ul>|67|[Tetrahedron](http://codeforces.com/problemset/problem/166/E)|Codeforces|4|\n|<ul><li>- [ ] Done</li></ul>|68|[George and Job](http://codeforces.com/problemset/problem/467/C)|Codeforces|4|\n|<ul><li>- [ ] Done</li></ul>|69|[Good Sequences](http://codeforces.com/problemset/problem/264/B)|Codeforces|4|\n|<ul><li>- [ ] Done</li></ul>|70|[Xenia and Weights](http://codeforces.com/problemset/problem/339/C)|Codeforces|4|\n|<ul><li>- [ ] Done</li></ul>|71|[Greg and Graph](http://codeforces.com/problemset/problem/295/B)|Codeforces|4|\n|<ul><li>- [ ] Done</li></ul>|72|[Number of Ways](http://codeforces.com/problemset/problem/466/C)|Codeforces|4|\n|<ul><li>- [ ] Done</li></ul>|73|[Pair of Numbers](http://codeforces.com/problemset/problem/359/D)|Codeforces|5|\n|<ul><li>- [ ] Done</li></ul>|74|[Wonder Room](http://codeforces.com/problemset/problem/466/B)|Codeforces|5|\n|<ul><li>- [ ] Done</li></ul>|75|[Pashmak and Parmida's problem](http://codeforces.com/problemset/problem/459/D)|Codeforces|5|\n|<ul><li>- [ ] Done</li></ul>|76|[Ice Cave](http://codeforces.com/problemset/problem/540/C)|Codeforces|5|\n|<ul><li>- [ ] Done</li></ul>|77|[Devu and his Brother](http://codeforces.com/problemset/problem/439/D)|Codeforces|5|\n|<ul><li>- [ ] Done</li></ul>|78|[Dima and Bacteria](http://codeforces.com/problemset/problem/400/D)|Codeforces|5|\n|<ul><li>- [ ] Done</li></ul>|79|[Watto and Mechanism](http://codeforces.com/problemset/problem/514/C)|Codeforces|5|\n|<ul><li>- [ ] Done</li></ul>|80|[Restore Graph](http://codeforces.com/problemset/problem/404/C)|Codeforces|5|\n|<ul><li>- [ ] Done</li></ul>|81|[Riding in a Lift](http://codeforces.com/problemset/problem/479/E)|Codeforces|5|\n|<ul><li>- [ ] Done</li></ul>|82|[Count Good Substrings](http://codeforces.com/problemset/problem/451/D)|Codeforces|5|\n|<ul><li>- [ ] Done</li></ul>|83|[Roman and Numbers](http://codeforces.com/problemset/problem/401/D)|Codeforces|5|\n|<ul><li>- [ ] Done</li></ul>|84|[Choosing Capital for Treeland](http://codeforces.com/problemset/problem/219/D)|Codeforces|5|\n|<ul><li>- [ ] Done</li></ul>|85|[Devu and Partitioning of the Array](http://codeforces.com/problemset/problem/439/C)|Codeforces|5|\n|<ul><li>- [ ] Done</li></ul>|86|[Valid Sets](http://codeforces.com/problemset/problem/486/D)|Codeforces|5|\n|<ul><li>- [ ] Done</li></ul>|87|[MUH and Cube Walls](http://codeforces.com/problemset/problem/471/D)|Codeforces|5|\n|<ul><li>- [ ] Done</li></ul>|88|[Painting Fence](http://codeforces.com/problemset/problem/448/C)|Codeforces|5|\n|<ul><li>- [ ] Done</li></ul>|89|[XOR on Segment](http://codeforces.com/problemset/problem/242/E)|Codeforces|5|\n|<ul><li>- [ ] Done</li></ul>|90|[Vessels](http://codeforces.com/problemset/problem/371/D)|Codeforces|5|\n|<ul><li>- [ ] Done</li></ul>|91|[Bad Luck Island](http://codeforces.com/problemset/problem/540/D)|Codeforces|5|\n|<ul><li>- [ ] Done</li></ul>|92|[Multiplication Table](http://codeforces.com/problemset/problem/448/D)|Codeforces|5|\n|<ul><li>- [ ] Done</li></ul>|93|[Red-Green Towers](http://codeforces.com/problemset/problem/478/D)|Codeforces|5|\n|<ul><li>- [ ] Done</li></ul>|94|[Pashmak and Buses](http://codeforces.com/problemset/problem/459/C)|Codeforces|5|\n|<ul><li>- [ ] Done</li></ul>|95|[Bag of mice](http://codeforces.com/problemset/problem/148/D)|Codeforces|5|\n|<ul><li>- [ ] Done</li></ul>|96|[Gargari and Bishops](http://codeforces.com/problemset/problem/463/C)|Codeforces|5|\n|<ul><li>- [ ] Done</li></ul>|97|[Gargari and Permutations](http://codeforces.com/problemset/problem/463/D)|Codeforces|5|\n|<ul><li>- [ ] Done</li></ul>|98|[R2D2 and Droid Army](http://codeforces.com/problemset/problem/514/D)|Codeforces|5|\n|<ul><li>- [ ] Done</li></ul>|99|[Bear and Prime Numbers](http://codeforces.com/problemset/problem/385/C)|Codeforces|5|\n|<ul><li>- [ ] Done</li></ul>|100|[Good Substrings](http://codeforces.com/problemset/problem/271/D)|Codeforces|5|\n"
  },
  {
    "path": "ladders/16. 1700 <= Codeforces Rating <= 1799/README.md",
    "content": "# Ladder Name: 16 - 1700 <= Codeforces Rating <= 1799\n## Description\n For users satisfying this condition\n## Difficulty Level: 4\n\n| Checkbox | ID  | Problem Name | Online Judge | Difficulty |\n|---|:---:|:---:|---|---|\n|<ul><li>- [ ] Done</li></ul>|1|[Candy Bags](http://codeforces.com/problemset/problem/334/A)|Codeforces|1|\n|<ul><li>- [ ] Done</li></ul>|2|[Word](http://codeforces.com/problemset/problem/59/A)|Codeforces|1|\n|<ul><li>- [ ] Done</li></ul>|3|[Dreamoon and Stairs](http://codeforces.com/problemset/problem/476/A)|Codeforces|2|\n|<ul><li>- [ ] Done</li></ul>|4|[Cut Ribbon](http://codeforces.com/problemset/problem/189/A)|Codeforces|3|\n|<ul><li>- [ ] Done</li></ul>|5|[T-primes](http://codeforces.com/problemset/problem/230/B)|Codeforces|3|\n|<ul><li>- [ ] Done</li></ul>|6|[Ice Skating](http://codeforces.com/problemset/problem/217/A)|Codeforces|3|\n|<ul><li>- [ ] Done</li></ul>|7|[Little Elephant and Bits](http://codeforces.com/problemset/problem/258/A)|Codeforces|3|\n|<ul><li>- [ ] Done</li></ul>|8|[Dreamoon and WiFi](http://codeforces.com/problemset/problem/476/B)|Codeforces|3|\n|<ul><li>- [ ] Done</li></ul>|9|[Party](http://codeforces.com/problemset/problem/115/A)|Codeforces|3|\n|<ul><li>- [ ] Done</li></ul>|10|[Greg and Array](http://codeforces.com/problemset/problem/295/A)|Codeforces|3|\n|<ul><li>- [ ] Done</li></ul>|11|[Table Decorations](http://codeforces.com/problemset/problem/478/C)|Codeforces|4|\n|<ul><li>- [ ] Done</li></ul>|12|[Checkposts](http://codeforces.com/problemset/problem/427/C)|Codeforces|4|\n|<ul><li>- [ ] Done</li></ul>|13|[Valera and Elections](http://codeforces.com/problemset/problem/369/C)|Codeforces|4|\n|<ul><li>- [ ] Done</li></ul>|14|[Psychos in a Line](http://codeforces.com/problemset/problem/319/B)|Codeforces|4|\n|<ul><li>- [ ] Done</li></ul>|15|[Counting Rectangles is Fun](http://codeforces.com/problemset/problem/372/B)|Codeforces|4|\n|<ul><li>- [ ] Done</li></ul>|16|[Greg and Graph](http://codeforces.com/problemset/problem/295/B)|Codeforces|4|\n|<ul><li>- [ ] Done</li></ul>|17|[Little Girl and Maximum Sum](http://codeforces.com/problemset/problem/276/C)|Codeforces|4|\n|<ul><li>- [ ] Done</li></ul>|18|[Renting Bikes](http://codeforces.com/problemset/problem/363/D)|Codeforces|4|\n|<ul><li>- [ ] Done</li></ul>|19|[Treasure](http://codeforces.com/problemset/problem/494/A)|Codeforces|4|\n|<ul><li>- [ ] Done</li></ul>|20|[DZY Loves Sequences](http://codeforces.com/problemset/problem/446/A)|Codeforces|4|\n|<ul><li>- [ ] Done</li></ul>|21|[Color the Fence](http://codeforces.com/problemset/problem/349/B)|Codeforces|4|\n|<ul><li>- [ ] Done</li></ul>|22|[Colorful Graph](http://codeforces.com/problemset/problem/246/D)|Codeforces|4|\n|<ul><li>- [ ] Done</li></ul>|23|[Zero Tree](http://codeforces.com/problemset/problem/274/B)|Codeforces|4|\n|<ul><li>- [ ] Done</li></ul>|24|[King's Path](http://codeforces.com/problemset/problem/242/C)|Codeforces|4|\n|<ul><li>- [ ] Done</li></ul>|25|[Interesting Array](http://codeforces.com/problemset/problem/482/B)|Codeforces|4|\n|<ul><li>- [ ] Done</li></ul>|26|[Greenhouse Effect](http://codeforces.com/problemset/problem/269/B)|Codeforces|4|\n|<ul><li>- [ ] Done</li></ul>|27|[The Brand New Function](http://codeforces.com/problemset/problem/243/A)|Codeforces|4|\n|<ul><li>- [ ] Done</li></ul>|28|[Caesar's Legions](http://codeforces.com/problemset/problem/118/D)|Codeforces|4|\n|<ul><li>- [ ] Done</li></ul>|29|[Dima and Hares](http://codeforces.com/problemset/problem/358/D)|Codeforces|4|\n|<ul><li>- [ ] Done</li></ul>|30|[Almost Arithmetical Progression](http://codeforces.com/problemset/problem/255/C)|Codeforces|4|\n|<ul><li>- [ ] Done</li></ul>|31|[Hamburgers](http://codeforces.com/problemset/problem/371/C)|Codeforces|4|\n|<ul><li>- [ ] Done</li></ul>|32|[Petya and Divisors](http://codeforces.com/problemset/problem/111/B)|Codeforces|4|\n|<ul><li>- [ ] Done</li></ul>|33|[Matrix](http://codeforces.com/problemset/problem/364/A)|Codeforces|4|\n|<ul><li>- [ ] Done</li></ul>|34|[Xenia and Weights](http://codeforces.com/problemset/problem/339/C)|Codeforces|4|\n|<ul><li>- [ ] Done</li></ul>|35|[Barcode](http://codeforces.com/problemset/problem/225/C)|Codeforces|4|\n|<ul><li>- [ ] Done</li></ul>|36|[Color Stripe](http://codeforces.com/problemset/problem/219/C)|Codeforces|4|\n|<ul><li>- [ ] Done</li></ul>|37|[Xenia and Bit Operations](http://codeforces.com/problemset/problem/339/D)|Codeforces|4|\n|<ul><li>- [ ] Done</li></ul>|38|[Ciel and Robot](http://codeforces.com/problemset/problem/321/A)|Codeforces|4|\n|<ul><li>- [ ] Done</li></ul>|39|[Little Elephant and Interval](http://codeforces.com/problemset/problem/204/A)|Codeforces|4|\n|<ul><li>- [ ] Done</li></ul>|40|[Little Elephant and Cards](http://codeforces.com/problemset/problem/204/B)|Codeforces|4|\n|<ul><li>- [ ] Done</li></ul>|41|[Good Sequences](http://codeforces.com/problemset/problem/264/B)|Codeforces|4|\n|<ul><li>- [ ] Done</li></ul>|42|[k-Tree](http://codeforces.com/problemset/problem/431/C)|Codeforces|4|\n|<ul><li>- [ ] Done</li></ul>|43|[Mike and Feet](http://codeforces.com/problemset/problem/547/B)|Codeforces|4|\n|<ul><li>- [ ] Done</li></ul>|44|[Andrey and Problem](http://codeforces.com/problemset/problem/442/B)|Codeforces|4|\n|<ul><li>- [ ] Done</li></ul>|45|[Maximum Submatrix 2](http://codeforces.com/problemset/problem/375/B)|Codeforces|4|\n|<ul><li>- [ ] Done</li></ul>|46|[Password](http://codeforces.com/problemset/problem/126/B)|Codeforces|4|\n|<ul><li>- [ ] Done</li></ul>|47|[Good Substrings](http://codeforces.com/problemset/problem/271/D)|Codeforces|5|\n|<ul><li>- [ ] Done</li></ul>|48|[GukiZ hates Boxes](http://codeforces.com/problemset/problem/551/C)|Codeforces|5|\n|<ul><li>- [ ] Done</li></ul>|49|[Regular Bridge](http://codeforces.com/problemset/problem/550/D)|Codeforces|5|\n|<ul><li>- [ ] Done</li></ul>|50|[MUH and Cube Walls](http://codeforces.com/problemset/problem/471/D)|Codeforces|5|\n|<ul><li>- [ ] Done</li></ul>|51|[Little Pony and Harmony Chest](http://codeforces.com/problemset/problem/453/B)|Codeforces|5|\n|<ul><li>- [ ] Done</li></ul>|52|[Sereja and Brackets](http://codeforces.com/problemset/problem/380/C)|Codeforces|5|\n|<ul><li>- [ ] Done</li></ul>|53|[Obsessive String](http://codeforces.com/problemset/problem/494/B)|Codeforces|5|\n|<ul><li>- [ ] Done</li></ul>|54|[Gargari and Bishops](http://codeforces.com/problemset/problem/463/C)|Codeforces|5|\n|<ul><li>- [ ] Done</li></ul>|55|[Appleman and Tree](http://codeforces.com/problemset/problem/461/B)|Codeforces|5|\n|<ul><li>- [ ] Done</li></ul>|56|[Soldier and Number Game](http://codeforces.com/problemset/problem/546/D)|Codeforces|5|\n|<ul><li>- [ ] Done</li></ul>|57|[Lucky Tree](http://codeforces.com/problemset/problem/109/C)|Codeforces|5|\n|<ul><li>- [ ] Done</li></ul>|58|[Missile Silos](http://codeforces.com/problemset/problem/144/D)|Codeforces|5|\n|<ul><li>- [ ] Done</li></ul>|59|[Sereja and the Arrangement of Numbers](http://codeforces.com/problemset/problem/367/C)|Codeforces|5|\n|<ul><li>- [ ] Done</li></ul>|60|[Enemy is weak](http://codeforces.com/problemset/problem/61/E)|Codeforces|5|\n|<ul><li>- [ ] Done</li></ul>|61|[A and B and Interesting Substrings](http://codeforces.com/problemset/problem/519/D)|Codeforces|5|\n|<ul><li>- [ ] Done</li></ul>|62|[Equivalent Strings](http://codeforces.com/problemset/problem/559/B)|Codeforces|5|\n|<ul><li>- [ ] Done</li></ul>|63|[Book of Evil](http://codeforces.com/problemset/problem/337/D)|Codeforces|5|\n|<ul><li>- [ ] Done</li></ul>|64|[Dima and Bacteria](http://codeforces.com/problemset/problem/400/D)|Codeforces|5|\n|<ul><li>- [ ] Done</li></ul>|65|[Present](http://codeforces.com/problemset/problem/460/C)|Codeforces|5|\n|<ul><li>- [ ] Done</li></ul>|66|[Ciel the Commander](http://codeforces.com/problemset/problem/321/C)|Codeforces|5|\n|<ul><li>- [ ] Done</li></ul>|67|[Pashmak and Buses](http://codeforces.com/problemset/problem/459/C)|Codeforces|5|\n|<ul><li>- [ ] Done</li></ul>|68|[Pashmak and Parmida's problem](http://codeforces.com/problemset/problem/459/D)|Codeforces|5|\n|<ul><li>- [ ] Done</li></ul>|69|[Count Good Substrings](http://codeforces.com/problemset/problem/451/D)|Codeforces|5|\n|<ul><li>- [ ] Done</li></ul>|70|[Book of Evil](http://codeforces.com/problemset/problem/337/D)|Codeforces|5|\n|<ul><li>- [ ] Done</li></ul>|71|[Civilization](http://codeforces.com/problemset/problem/455/C)|Codeforces|5|\n|<ul><li>- [ ] Done</li></ul>|72|[Painting Fence](http://codeforces.com/problemset/problem/448/C)|Codeforces|5|\n|<ul><li>- [ ] Done</li></ul>|73|[A and B and Lecture Rooms](http://codeforces.com/problemset/problem/519/E)|Codeforces|5|\n|<ul><li>- [ ] Done</li></ul>|74|[Water Tree](http://codeforces.com/problemset/problem/343/D)|Codeforces|5|\n|<ul><li>- [ ] Done</li></ul>|75|[Choosing Balls](http://codeforces.com/problemset/problem/264/C)|Codeforces|5|\n|<ul><li>- [ ] Done</li></ul>|76|[Watto and Mechanism](http://codeforces.com/problemset/problem/514/C)|Codeforces|5|\n|<ul><li>- [ ] Done</li></ul>|77|[Multiplication Table](http://codeforces.com/problemset/problem/448/D)|Codeforces|5|\n|<ul><li>- [ ] Done</li></ul>|78|[Characteristics of Rectangles](http://codeforces.com/problemset/problem/333/D)|Codeforces|5|\n|<ul><li>- [ ] Done</li></ul>|79|[Lucky Common Subsequence](http://codeforces.com/problemset/problem/346/B)|Codeforces|5|\n|<ul><li>- [ ] Done</li></ul>|80|[Prefixes and Suffixes](http://codeforces.com/problemset/problem/432/D)|Codeforces|5|\n|<ul><li>- [ ] Done</li></ul>|81|[Sereja ans Anagrams](http://codeforces.com/problemset/problem/367/B)|Codeforces|5|\n|<ul><li>- [ ] Done</li></ul>|82|[XOR on Segment](http://codeforces.com/problemset/problem/242/E)|Codeforces|5|\n|<ul><li>- [ ] Done</li></ul>|83|[Porcelain](http://codeforces.com/problemset/problem/148/E)|Codeforces|5|\n|<ul><li>- [ ] Done</li></ul>|84|[Devu and his Brother](http://codeforces.com/problemset/problem/439/D)|Codeforces|5|\n|<ul><li>- [ ] Done</li></ul>|85|[Eternal Victory](http://codeforces.com/problemset/problem/61/D)|Codeforces|5|\n|<ul><li>- [ ] Done</li></ul>|86|[Red-Green Towers](http://codeforces.com/problemset/problem/478/D)|Codeforces|5|\n|<ul><li>- [ ] Done</li></ul>|87|[Choosing Capital for Treeland](http://codeforces.com/problemset/problem/219/D)|Codeforces|5|\n|<ul><li>- [ ] Done</li></ul>|88|[Roman and Numbers](http://codeforces.com/problemset/problem/401/D)|Codeforces|5|\n|<ul><li>- [ ] Done</li></ul>|89|[Vessels](http://codeforces.com/problemset/problem/371/D)|Codeforces|5|\n|<ul><li>- [ ] Done</li></ul>|90|[Propagating tree](http://codeforces.com/problemset/problem/383/C)|Codeforces|5|\n|<ul><li>- [ ] Done</li></ul>|91|[Bag of mice](http://codeforces.com/problemset/problem/148/D)|Codeforces|5|\n|<ul><li>- [ ] Done</li></ul>|92|[A Lot of Games](http://codeforces.com/problemset/problem/455/B)|Codeforces|5|\n|<ul><li>- [ ] Done</li></ul>|93|[Pair of Numbers](http://codeforces.com/problemset/problem/359/D)|Codeforces|5|\n|<ul><li>- [ ] Done</li></ul>|94|[Pashmak and Graph](http://codeforces.com/problemset/problem/459/E)|Codeforces|5|\n|<ul><li>- [ ] Done</li></ul>|95|[Petr#](http://codeforces.com/problemset/problem/113/B)|Codeforces|6|\n|<ul><li>- [ ] Done</li></ul>|96|[The Child and Sequence](http://codeforces.com/problemset/problem/438/D)|Codeforces|6|\n|<ul><li>- [ ] Done</li></ul>|97|[Vasya and Beautiful Arrays](http://codeforces.com/problemset/problem/354/C)|Codeforces|6|\n|<ul><li>- [ ] Done</li></ul>|98|[Little Girl and Problem on Trees](http://codeforces.com/problemset/problem/276/E)|Codeforces|6|\n|<ul><li>- [ ] Done</li></ul>|99|[Antimatter](http://codeforces.com/problemset/problem/383/D)|Codeforces|6|\n|<ul><li>- [ ] Done</li></ul>|100|[Tree Requests](http://codeforces.com/problemset/problem/570/D)|Codeforces|6|\n"
  },
  {
    "path": "ladders/17. 1800 <= Codeforces Rating <= 1899/README.md",
    "content": "# Ladder Name: 17 - 1800 <= Codeforces Rating <= 1899\n## Description\n For users satisfying this condition\n## Difficulty Level: 5\n\n| Checkbox | ID  | Problem Name | Online Judge | Difficulty |\n|---|:---:|:---:|---|---|\n|<ul><li>- [ ] Done</li></ul>|1|[Anton and Letters](http://codeforces.com/problemset/problem/443/A)|Codeforces|1|\n|<ul><li>- [ ] Done</li></ul>|2|[Way Too Long Words](http://codeforces.com/problemset/problem/71/A)|Codeforces|1|\n|<ul><li>- [ ] Done</li></ul>|3|[Young Physicist](http://codeforces.com/problemset/problem/69/A)|Codeforces|1|\n|<ul><li>- [ ] Done</li></ul>|4|[Coder](http://codeforces.com/problemset/problem/384/A)|Codeforces|1|\n|<ul><li>- [ ] Done</li></ul>|5|[Collecting Beats is Fun](http://codeforces.com/problemset/problem/373/A)|Codeforces|2|\n|<ul><li>- [ ] Done</li></ul>|6|[Fox and Cross](http://codeforces.com/problemset/problem/389/B)|Codeforces|3|\n|<ul><li>- [ ] Done</li></ul>|7|[Archer](http://codeforces.com/problemset/problem/312/B)|Codeforces|3|\n|<ul><li>- [ ] Done</li></ul>|8|[Sereja and Suffixes](http://codeforces.com/problemset/problem/368/B)|Codeforces|3|\n|<ul><li>- [ ] Done</li></ul>|9|[Ladder](http://codeforces.com/problemset/problem/279/C)|Codeforces|4|\n|<ul><li>- [ ] Done</li></ul>|10|[Color the Fence](http://codeforces.com/problemset/problem/349/B)|Codeforces|4|\n|<ul><li>- [ ] Done</li></ul>|11|[Vasya and Robot](http://codeforces.com/problemset/problem/354/A)|Codeforces|4|\n|<ul><li>- [ ] Done</li></ul>|12|[Fools and Roads](http://codeforces.com/problemset/problem/191/C)|Codeforces|4|\n|<ul><li>- [ ] Done</li></ul>|13|[Dima and Hares](http://codeforces.com/problemset/problem/358/D)|Codeforces|4|\n|<ul><li>- [ ] Done</li></ul>|14|[Xenia and Weights](http://codeforces.com/problemset/problem/339/C)|Codeforces|4|\n|<ul><li>- [ ] Done</li></ul>|15|[Inna and Dima](http://codeforces.com/problemset/problem/374/C)|Codeforces|4|\n|<ul><li>- [ ] Done</li></ul>|16|[Cows and Sequence](http://codeforces.com/problemset/problem/283/A)|Codeforces|4|\n|<ul><li>- [ ] Done</li></ul>|17|[Psychos in a Line](http://codeforces.com/problemset/problem/319/B)|Codeforces|4|\n|<ul><li>- [ ] Done</li></ul>|18|[Greg and Graph](http://codeforces.com/problemset/problem/295/B)|Codeforces|4|\n|<ul><li>- [ ] Done</li></ul>|19|[Number of Ways](http://codeforces.com/problemset/problem/466/C)|Codeforces|4|\n|<ul><li>- [ ] Done</li></ul>|20|[Working out](http://codeforces.com/problemset/problem/429/B)|Codeforces|4|\n|<ul><li>- [ ] Done</li></ul>|21|[Read Time](http://codeforces.com/problemset/problem/343/C)|Codeforces|4|\n|<ul><li>- [ ] Done</li></ul>|22|[Cow Program](http://codeforces.com/problemset/problem/283/B)|Codeforces|4|\n|<ul><li>- [ ] Done</li></ul>|23|[LCM Challenge](http://codeforces.com/problemset/problem/235/A)|Codeforces|4|\n|<ul><li>- [ ] Done</li></ul>|24|[Bubble Sort Graph](http://codeforces.com/problemset/problem/340/D)|Codeforces|4|\n|<ul><li>- [ ] Done</li></ul>|25|[Beautiful Numbers](http://codeforces.com/problemset/problem/300/C)|Codeforces|4|\n|<ul><li>- [ ] Done</li></ul>|26|[Counting Kangaroos is Fun](http://codeforces.com/problemset/problem/372/A)|Codeforces|4|\n|<ul><li>- [ ] Done</li></ul>|27|[Little Girl and Maximum Sum](http://codeforces.com/problemset/problem/276/C)|Codeforces|4|\n|<ul><li>- [ ] Done</li></ul>|28|[Little Girl and Maximum XOR](http://codeforces.com/problemset/problem/276/D)|Codeforces|4|\n|<ul><li>- [ ] Done</li></ul>|29|[No to Palindromes!](http://codeforces.com/problemset/problem/464/A)|Codeforces|4|\n|<ul><li>- [ ] Done</li></ul>|30|[George and Job](http://codeforces.com/problemset/problem/467/C)|Codeforces|4|\n|<ul><li>- [ ] Done</li></ul>|31|[Matrix](http://codeforces.com/problemset/problem/364/A)|Codeforces|4|\n|<ul><li>- [ ] Done</li></ul>|32|[Round Table Knights](http://codeforces.com/problemset/problem/71/C)|Codeforces|4|\n|<ul><li>- [ ] Done</li></ul>|33|[Caesar's Legions](http://codeforces.com/problemset/problem/118/D)|Codeforces|4|\n|<ul><li>- [ ] Done</li></ul>|34|[Zero Tree](http://codeforces.com/problemset/problem/274/B)|Codeforces|4|\n|<ul><li>- [ ] Done</li></ul>|35|[Maximum Submatrix 2](http://codeforces.com/problemset/problem/375/B)|Codeforces|4|\n|<ul><li>- [ ] Done</li></ul>|36|[Password](http://codeforces.com/problemset/problem/126/B)|Codeforces|4|\n|<ul><li>- [ ] Done</li></ul>|37|[Book of Evil](http://codeforces.com/problemset/problem/337/D)|Codeforces|5|\n|<ul><li>- [ ] Done</li></ul>|38|[Lucky Tree](http://codeforces.com/problemset/problem/109/C)|Codeforces|5|\n|<ul><li>- [ ] Done</li></ul>|39|[Jzzhu and Cities](http://codeforces.com/problemset/problem/449/B)|Codeforces|5|\n|<ul><li>- [ ] Done</li></ul>|40|[Ciel and Duel](http://codeforces.com/problemset/problem/321/B)|Codeforces|5|\n|<ul><li>- [ ] Done</li></ul>|41|[Array and Operations](http://codeforces.com/problemset/problem/498/C)|Codeforces|5|\n|<ul><li>- [ ] Done</li></ul>|42|[Increase Sequence](http://codeforces.com/problemset/problem/466/D)|Codeforces|5|\n|<ul><li>- [ ] Done</li></ul>|43|[Choosing Capital for Treeland](http://codeforces.com/problemset/problem/219/D)|Codeforces|5|\n|<ul><li>- [ ] Done</li></ul>|44|[Fox and Minimal path](http://codeforces.com/problemset/problem/388/B)|Codeforces|5|\n|<ul><li>- [ ] Done</li></ul>|45|[Kalila and Dimna in the Logging Industry](http://codeforces.com/problemset/problem/319/C)|Codeforces|5|\n|<ul><li>- [ ] Done</li></ul>|46|[Vessels](http://codeforces.com/problemset/problem/371/D)|Codeforces|5|\n|<ul><li>- [ ] Done</li></ul>|47|[Greg and Friends](http://codeforces.com/problemset/problem/295/C)|Codeforces|5|\n|<ul><li>- [ ] Done</li></ul>|48|[Sereja and the Arrangement of Numbers](http://codeforces.com/problemset/problem/367/C)|Codeforces|5|\n|<ul><li>- [ ] Done</li></ul>|49|[Super M](http://codeforces.com/problemset/problem/592/D)|Codeforces|5|\n|<ul><li>- [ ] Done</li></ul>|50|[Count Good Substrings](http://codeforces.com/problemset/problem/451/D)|Codeforces|5|\n|<ul><li>- [ ] Done</li></ul>|51|[Roman and Numbers](http://codeforces.com/problemset/problem/401/D)|Codeforces|5|\n|<ul><li>- [ ] Done</li></ul>|52|[Dima and Bacteria](http://codeforces.com/problemset/problem/400/D)|Codeforces|5|\n|<ul><li>- [ ] Done</li></ul>|53|[Civilization](http://codeforces.com/problemset/problem/455/C)|Codeforces|5|\n|<ul><li>- [ ] Done</li></ul>|54|[Enemy is weak](http://codeforces.com/problemset/problem/61/E)|Codeforces|5|\n|<ul><li>- [ ] Done</li></ul>|55|[Dima and Salad](http://codeforces.com/problemset/problem/366/C)|Codeforces|5|\n|<ul><li>- [ ] Done</li></ul>|56|[Little Elephant and Array](http://codeforces.com/problemset/problem/220/B)|Codeforces|5|\n|<ul><li>- [ ] Done</li></ul>|57|[Prime Number](http://codeforces.com/problemset/problem/359/C)|Codeforces|5|\n|<ul><li>- [ ] Done</li></ul>|58|[Prefixes and Suffixes](http://codeforces.com/problemset/problem/432/D)|Codeforces|5|\n|<ul><li>- [ ] Done</li></ul>|59|[A Lot of Games](http://codeforces.com/problemset/problem/455/B)|Codeforces|5|\n|<ul><li>- [ ] Done</li></ul>|60|[Ciel the Commander](http://codeforces.com/problemset/problem/321/C)|Codeforces|5|\n|<ul><li>- [ ] Done</li></ul>|61|[Painting Fence](http://codeforces.com/problemset/problem/448/C)|Codeforces|5|\n|<ul><li>- [ ] Done</li></ul>|62|[Breaking Good](http://codeforces.com/problemset/problem/507/E)|Codeforces|5|\n|<ul><li>- [ ] Done</li></ul>|63|[Eternal Victory](http://codeforces.com/problemset/problem/61/D)|Codeforces|5|\n|<ul><li>- [ ] Done</li></ul>|64|[XOR on Segment](http://codeforces.com/problemset/problem/242/E)|Codeforces|5|\n|<ul><li>- [ ] Done</li></ul>|65|[Sereja and Subsequences](http://codeforces.com/problemset/problem/314/C)|Codeforces|5|\n|<ul><li>- [ ] Done</li></ul>|66|[Levko and Array](http://codeforces.com/problemset/problem/360/B)|Codeforces|5|\n|<ul><li>- [ ] Done</li></ul>|67|[Gargari and Permutations](http://codeforces.com/problemset/problem/463/D)|Codeforces|5|\n|<ul><li>- [ ] Done</li></ul>|68|[Watching Fireworks is Fun](http://codeforces.com/problemset/problem/372/C)|Codeforces|5|\n|<ul><li>- [ ] Done</li></ul>|69|[Valid Sets](http://codeforces.com/problemset/problem/486/D)|Codeforces|5|\n|<ul><li>- [ ] Done</li></ul>|70|[Pashmak and Parmida's problem](http://codeforces.com/problemset/problem/459/D)|Codeforces|5|\n|<ul><li>- [ ] Done</li></ul>|71|[Maximum Value](http://codeforces.com/problemset/problem/484/B)|Codeforces|5|\n|<ul><li>- [ ] Done</li></ul>|72|[Pashmak and Graph](http://codeforces.com/problemset/problem/459/E)|Codeforces|5|\n|<ul><li>- [ ] Done</li></ul>|73|[Fox and Card Game](http://codeforces.com/problemset/problem/388/C)|Codeforces|5|\n|<ul><li>- [ ] Done</li></ul>|74|[Strip](http://codeforces.com/problemset/problem/487/B)|Codeforces|5|\n|<ul><li>- [ ] Done</li></ul>|75|[Propagating tree](http://codeforces.com/problemset/problem/383/C)|Codeforces|5|\n|<ul><li>- [ ] Done</li></ul>|76|[Sausage Maximization](http://codeforces.com/problemset/problem/282/E)|Codeforces|5|\n|<ul><li>- [ ] Done</li></ul>|77|[Sereja ans Anagrams](http://codeforces.com/problemset/problem/367/B)|Codeforces|5|\n|<ul><li>- [ ] Done</li></ul>|78|[Good Substrings](http://codeforces.com/problemset/problem/271/D)|Codeforces|5|\n|<ul><li>- [ ] Done</li></ul>|79|[Appleman and Tree](http://codeforces.com/problemset/problem/461/B)|Codeforces|5|\n|<ul><li>- [ ] Done</li></ul>|80|[MUH and Cube Walls](http://codeforces.com/problemset/problem/471/D)|Codeforces|5|\n|<ul><li>- [ ] Done</li></ul>|81|[Pair of Numbers](http://codeforces.com/problemset/problem/359/D)|Codeforces|5|\n|<ul><li>- [ ] Done</li></ul>|82|[Sereja and Brackets](http://codeforces.com/problemset/problem/380/C)|Codeforces|5|\n|<ul><li>- [ ] Done</li></ul>|83|[Water Tree](http://codeforces.com/problemset/problem/343/D)|Codeforces|5|\n|<ul><li>- [ ] Done</li></ul>|84|[Antimatter](http://codeforces.com/problemset/problem/383/D)|Codeforces|6|\n|<ul><li>- [ ] Done</li></ul>|85|[LIS of Sequence](http://codeforces.com/problemset/problem/486/E)|Codeforces|6|\n|<ul><li>- [ ] Done</li></ul>|86|[The Maths Lecture](http://codeforces.com/problemset/problem/507/D)|Codeforces|6|\n|<ul><li>- [ ] Done</li></ul>|87|[Number Transformation II](http://codeforces.com/problemset/problem/346/C)|Codeforces|6|\n|<ul><li>- [ ] Done</li></ul>|88|[Fools and Foolproof Roads](http://codeforces.com/problemset/problem/362/D)|Codeforces|6|\n|<ul><li>- [ ] Done</li></ul>|89|[Lucky Queries](http://codeforces.com/problemset/problem/145/E)|Codeforces|6|\n|<ul><li>- [ ] Done</li></ul>|90|[Caisa and Tree](http://codeforces.com/problemset/problem/463/E)|Codeforces|6|\n|<ul><li>- [ ] Done</li></ul>|91|[Valera and Fools](http://codeforces.com/problemset/problem/369/D)|Codeforces|6|\n|<ul><li>- [ ] Done</li></ul>|92|[Blood Cousins](http://codeforces.com/problemset/problem/208/E)|Codeforces|6|\n|<ul><li>- [ ] Done</li></ul>|93|[Information Graph](http://codeforces.com/problemset/problem/466/E)|Codeforces|6|\n|<ul><li>- [ ] Done</li></ul>|94|[Vasya and Beautiful Arrays](http://codeforces.com/problemset/problem/354/C)|Codeforces|6|\n|<ul><li>- [ ] Done</li></ul>|95|[Little Girl and Problem on Trees](http://codeforces.com/problemset/problem/276/E)|Codeforces|6|\n|<ul><li>- [ ] Done</li></ul>|96|[Valera and Queries](http://codeforces.com/problemset/problem/369/E)|Codeforces|6|\n|<ul><li>- [ ] Done</li></ul>|97|[Yaroslav and Divisors](http://codeforces.com/problemset/problem/301/D)|Codeforces|6|\n|<ul><li>- [ ] Done</li></ul>|98|[Shaass the Great](http://codeforces.com/problemset/problem/294/E)|Codeforces|7|\n|<ul><li>- [ ] Done</li></ul>|99|[Tree and Queries](http://codeforces.com/problemset/problem/375/D)|Codeforces|7|\n|<ul><li>- [ ] Done</li></ul>|100|[Xenia and Tree](http://codeforces.com/problemset/problem/342/E)|Codeforces|7|\n"
  },
  {
    "path": "ladders/18. 1900 <= Codeforces Rating <= 1999/README.md",
    "content": "# Ladder Name: 18 - 1900 <= Codeforces Rating <= 1999\n## Description\n For users satisfying this condition\n## Difficulty Level: 5\n\n| Checkbox | ID  | Problem Name | Online Judge | Difficulty |\n|---|:---:|:---:|---|---|\n|<ul><li>- [ ] Done</li></ul>|1|[Sereja and Dima](http://codeforces.com/problemset/problem/381/A)|Codeforces|1|\n|<ul><li>- [ ] Done</li></ul>|2|[Gravity Flip](http://codeforces.com/problemset/problem/405/A)|Codeforces|1|\n|<ul><li>- [ ] Done</li></ul>|3|[Little Pony and Crystal Mine](http://codeforces.com/problemset/problem/454/A)|Codeforces|1|\n|<ul><li>- [ ] Done</li></ul>|4|[Anton and Letters](http://codeforces.com/problemset/problem/443/A)|Codeforces|1|\n|<ul><li>- [ ] Done</li></ul>|5|[Fox And Snake](http://codeforces.com/problemset/problem/510/A)|Codeforces|1|\n|<ul><li>- [ ] Done</li></ul>|6|[inc ARG](http://codeforces.com/problemset/problem/465/A)|Codeforces|2|\n|<ul><li>- [ ] Done</li></ul>|7|[Caisa and Pylons](http://codeforces.com/problemset/problem/463/B)|Codeforces|2|\n|<ul><li>- [ ] Done</li></ul>|8|[Puzzles](http://codeforces.com/problemset/problem/337/A)|Codeforces|2|\n|<ul><li>- [ ] Done</li></ul>|9|[Chat room](http://codeforces.com/problemset/problem/58/A)|Codeforces|2|\n|<ul><li>- [ ] Done</li></ul>|10|[Vasya and Socks](http://codeforces.com/problemset/problem/460/A)|Codeforces|2|\n|<ul><li>- [ ] Done</li></ul>|11|[I Wanna Be the Guy](http://codeforces.com/problemset/problem/469/A)|Codeforces|2|\n|<ul><li>- [ ] Done</li></ul>|12|[Expression](http://codeforces.com/problemset/problem/479/A)|Codeforces|2|\n|<ul><li>- [ ] Done</li></ul>|13|[Counterexample ](http://codeforces.com/problemset/problem/483/A)|Codeforces|3|\n|<ul><li>- [ ] Done</li></ul>|14|[Flipping Game](http://codeforces.com/problemset/problem/327/A)|Codeforces|3|\n|<ul><li>- [ ] Done</li></ul>|15|[Pashmak and Garden](http://codeforces.com/problemset/problem/459/A)|Codeforces|3|\n|<ul><li>- [ ] Done</li></ul>|16|[Ilya and Queries](http://codeforces.com/problemset/problem/313/B)|Codeforces|3|\n|<ul><li>- [ ] Done</li></ul>|17|[Cheap Travel](http://codeforces.com/problemset/problem/466/A)|Codeforces|3|\n|<ul><li>- [ ] Done</li></ul>|18|[Little Pony and Expected Maximum](http://codeforces.com/problemset/problem/453/A)|Codeforces|3|\n|<ul><li>- [ ] Done</li></ul>|19|[Caisa and Sugar](http://codeforces.com/problemset/problem/463/A)|Codeforces|3|\n|<ul><li>- [ ] Done</li></ul>|20|[Cut Ribbon](http://codeforces.com/problemset/problem/189/A)|Codeforces|3|\n|<ul><li>- [ ] Done</li></ul>|21|[Writing Code](http://codeforces.com/problemset/problem/543/A)|Codeforces|4|\n|<ul><li>- [ ] Done</li></ul>|22|[Tennis Game](http://codeforces.com/problemset/problem/496/D)|Codeforces|4|\n|<ul><li>- [ ] Done</li></ul>|23|[Towers](http://codeforces.com/problemset/problem/479/B)|Codeforces|4|\n|<ul><li>- [ ] Done</li></ul>|24|[Ryouko's Memory Note](http://codeforces.com/problemset/problem/433/C)|Codeforces|4|\n|<ul><li>- [ ] Done</li></ul>|25|[Knight Tournament](http://codeforces.com/problemset/problem/356/A)|Codeforces|4|\n|<ul><li>- [ ] Done</li></ul>|26|[Andrey and Problem](http://codeforces.com/problemset/problem/442/B)|Codeforces|4|\n|<ul><li>- [ ] Done</li></ul>|27|[Password](http://codeforces.com/problemset/problem/126/B)|Codeforces|4|\n|<ul><li>- [ ] Done</li></ul>|28|[Interesting Array](http://codeforces.com/problemset/problem/482/B)|Codeforces|4|\n|<ul><li>- [ ] Done</li></ul>|29|[Fox And Two Dots](http://codeforces.com/problemset/problem/510/B)|Codeforces|4|\n|<ul><li>- [ ] Done</li></ul>|30|[Xenia and Bit Operations](http://codeforces.com/problemset/problem/339/D)|Codeforces|4|\n|<ul><li>- [ ] Done</li></ul>|31|[k-Tree](http://codeforces.com/problemset/problem/431/C)|Codeforces|4|\n|<ul><li>- [ ] Done</li></ul>|32|[Read Time](http://codeforces.com/problemset/problem/343/C)|Codeforces|4|\n|<ul><li>- [ ] Done</li></ul>|33|[Boredom](http://codeforces.com/problemset/problem/455/A)|Codeforces|4|\n|<ul><li>- [ ] Done</li></ul>|34|[Fools and Roads](http://codeforces.com/problemset/problem/191/C)|Codeforces|4|\n|<ul><li>- [ ] Done</li></ul>|35|[DZY Loves Sequences](http://codeforces.com/problemset/problem/446/A)|Codeforces|4|\n|<ul><li>- [ ] Done</li></ul>|36|[Breaking Good](http://codeforces.com/problemset/problem/507/E)|Codeforces|5|\n|<ul><li>- [ ] Done</li></ul>|37|[Red-Green Towers](http://codeforces.com/problemset/problem/478/D)|Codeforces|5|\n|<ul><li>- [ ] Done</li></ul>|38|[Pashmak and Buses](http://codeforces.com/problemset/problem/459/C)|Codeforces|5|\n|<ul><li>- [ ] Done</li></ul>|39|[Mashmokh and Reverse Operation](http://codeforces.com/problemset/problem/414/C)|Codeforces|5|\n|<ul><li>- [ ] Done</li></ul>|40|[Sereja and Table ](http://codeforces.com/problemset/problem/425/B)|Codeforces|5|\n|<ul><li>- [ ] Done</li></ul>|41|[R2D2 and Droid Army](http://codeforces.com/problemset/problem/514/D)|Codeforces|5|\n|<ul><li>- [ ] Done</li></ul>|42|[Strip](http://codeforces.com/problemset/problem/487/B)|Codeforces|5|\n|<ul><li>- [ ] Done</li></ul>|43|[Destroying Roads](http://codeforces.com/problemset/problem/543/B)|Codeforces|5|\n|<ul><li>- [ ] Done</li></ul>|44|[A and B and Lecture Rooms](http://codeforces.com/problemset/problem/519/E)|Codeforces|5|\n|<ul><li>- [ ] Done</li></ul>|45|[Obsessive String](http://codeforces.com/problemset/problem/494/B)|Codeforces|5|\n|<ul><li>- [ ] Done</li></ul>|46|[Restore Cube ](http://codeforces.com/problemset/problem/464/B)|Codeforces|5|\n|<ul><li>- [ ] Done</li></ul>|47|[Roman and Numbers](http://codeforces.com/problemset/problem/401/D)|Codeforces|5|\n|<ul><li>- [ ] Done</li></ul>|48|[Water Tree](http://codeforces.com/problemset/problem/343/D)|Codeforces|5|\n|<ul><li>- [ ] Done</li></ul>|49|[Towers](http://codeforces.com/problemset/problem/229/D)|Codeforces|5|\n|<ul><li>- [ ] Done</li></ul>|50|[Maximum Value](http://codeforces.com/problemset/problem/484/B)|Codeforces|5|\n|<ul><li>- [ ] Done</li></ul>|51|[Valera and Swaps](http://codeforces.com/problemset/problem/441/D)|Codeforces|5|\n|<ul><li>- [ ] Done</li></ul>|52|[Increase Sequence](http://codeforces.com/problemset/problem/466/D)|Codeforces|5|\n|<ul><li>- [ ] Done</li></ul>|53|[Wonder Room](http://codeforces.com/problemset/problem/466/B)|Codeforces|5|\n|<ul><li>- [ ] Done</li></ul>|54|[Devu and Partitioning of the Array](http://codeforces.com/problemset/problem/439/C)|Codeforces|5|\n|<ul><li>- [ ] Done</li></ul>|55|[Gerald and Giant Chess](http://codeforces.com/problemset/problem/559/C)|Codeforces|5|\n|<ul><li>- [ ] Done</li></ul>|56|[Watching Fireworks is Fun](http://codeforces.com/problemset/problem/372/C)|Codeforces|5|\n|<ul><li>- [ ] Done</li></ul>|57|[Jeff and Rounding](http://codeforces.com/problemset/problem/351/A)|Codeforces|5|\n|<ul><li>- [ ] Done</li></ul>|58|[Ciel the Commander](http://codeforces.com/problemset/problem/321/C)|Codeforces|5|\n|<ul><li>- [ ] Done</li></ul>|59|[Painting Fence](http://codeforces.com/problemset/problem/448/C)|Codeforces|5|\n|<ul><li>- [ ] Done</li></ul>|60|[Little Pony and Harmony Chest](http://codeforces.com/problemset/problem/453/B)|Codeforces|5|\n|<ul><li>- [ ] Done</li></ul>|61|[Case of Chocolate](http://codeforces.com/problemset/problem/555/C)|Codeforces|5|\n|<ul><li>- [ ] Done</li></ul>|62|[Lucky Common Subsequence](http://codeforces.com/problemset/problem/346/B)|Codeforces|5|\n|<ul><li>- [ ] Done</li></ul>|63|[Sereja and Brackets](http://codeforces.com/problemset/problem/380/C)|Codeforces|5|\n|<ul><li>- [ ] Done</li></ul>|64|[Kalila and Dimna in the Logging Industry](http://codeforces.com/problemset/problem/319/C)|Codeforces|5|\n|<ul><li>- [ ] Done</li></ul>|65|[String](http://codeforces.com/problemset/problem/128/B)|Codeforces|5|\n|<ul><li>- [ ] Done</li></ul>|66|[Civilization](http://codeforces.com/problemset/problem/455/C)|Codeforces|5|\n|<ul><li>- [ ] Done</li></ul>|67|[XOR on Segment](http://codeforces.com/problemset/problem/242/E)|Codeforces|5|\n|<ul><li>- [ ] Done</li></ul>|68|[Prefixes and Suffixes](http://codeforces.com/problemset/problem/432/D)|Codeforces|5|\n|<ul><li>- [ ] Done</li></ul>|69|[Appleman and Tree](http://codeforces.com/problemset/problem/461/B)|Codeforces|5|\n|<ul><li>- [ ] Done</li></ul>|70|[Enemy is weak](http://codeforces.com/problemset/problem/61/E)|Codeforces|5|\n|<ul><li>- [ ] Done</li></ul>|71|[Jzzhu and Cities](http://codeforces.com/problemset/problem/449/B)|Codeforces|5|\n|<ul><li>- [ ] Done</li></ul>|72|[Substitutes in Number](http://codeforces.com/problemset/problem/464/C)|Codeforces|5|\n|<ul><li>- [ ] Done</li></ul>|73|[Little Elephant and Array](http://codeforces.com/problemset/problem/220/B)|Codeforces|5|\n|<ul><li>- [ ] Done</li></ul>|74|[Pashmak and Graph](http://codeforces.com/problemset/problem/459/E)|Codeforces|5|\n|<ul><li>- [ ] Done</li></ul>|75|[Propagating tree](http://codeforces.com/problemset/problem/383/C)|Codeforces|5|\n|<ul><li>- [ ] Done</li></ul>|76|[Match & Catch](http://codeforces.com/problemset/problem/427/D)|Codeforces|6|\n|<ul><li>- [ ] Done</li></ul>|77|[A Simple Task](http://codeforces.com/problemset/problem/558/E)|Codeforces|6|\n|<ul><li>- [ ] Done</li></ul>|78|[Prefix Product Sequence](http://codeforces.com/problemset/problem/487/C)|Codeforces|6|\n|<ul><li>- [ ] Done</li></ul>|79|[Vasya and Beautiful Arrays](http://codeforces.com/problemset/problem/354/C)|Codeforces|6|\n|<ul><li>- [ ] Done</li></ul>|80|[Road Improvement](http://codeforces.com/problemset/problem/543/D)|Codeforces|6|\n|<ul><li>- [ ] Done</li></ul>|81|[Tree Requests](http://codeforces.com/problemset/problem/570/D)|Codeforces|6|\n|<ul><li>- [ ] Done</li></ul>|82|[Sereja and Squares](http://codeforces.com/problemset/problem/425/D)|Codeforces|6|\n|<ul><li>- [ ] Done</li></ul>|83|[LIS of Sequence](http://codeforces.com/problemset/problem/486/E)|Codeforces|6|\n|<ul><li>- [ ] Done</li></ul>|84|[Jzzhu and Numbers](http://codeforces.com/problemset/problem/449/D)|Codeforces|6|\n|<ul><li>- [ ] Done</li></ul>|85|[Captains Mode](http://codeforces.com/problemset/problem/377/C)|Codeforces|6|\n|<ul><li>- [ ] Done</li></ul>|86|[Mike and Foam](http://codeforces.com/problemset/problem/547/C)|Codeforces|6|\n|<ul><li>- [ ] Done</li></ul>|87|[Devu and Birthday Celebration](http://codeforces.com/problemset/problem/439/E)|Codeforces|6|\n|<ul><li>- [ ] Done</li></ul>|88|[Martian Strings](http://codeforces.com/problemset/problem/149/E)|Codeforces|6|\n|<ul><li>- [ ] Done</li></ul>|89|[Hill Climbing](http://codeforces.com/problemset/problem/406/D)|Codeforces|6|\n|<ul><li>- [ ] Done</li></ul>|90|[Antimatter](http://codeforces.com/problemset/problem/383/D)|Codeforces|6|\n|<ul><li>- [ ] Done</li></ul>|91|[Tricky Function](http://codeforces.com/problemset/problem/429/D)|Codeforces|6|\n|<ul><li>- [ ] Done</li></ul>|92|[The Child and Sequence](http://codeforces.com/problemset/problem/438/D)|Codeforces|6|\n|<ul><li>- [ ] Done</li></ul>|93|[Tanya and Password](http://codeforces.com/problemset/problem/508/D)|Codeforces|7|\n|<ul><li>- [ ] Done</li></ul>|94|[Fedor and Essay](http://codeforces.com/problemset/problem/467/D)|Codeforces|7|\n|<ul><li>- [ ] Done</li></ul>|95|[Xenia and Tree](http://codeforces.com/problemset/problem/342/E)|Codeforces|7|\n|<ul><li>- [ ] Done</li></ul>|96|[DZY Loves Fibonacci Numbers](http://codeforces.com/problemset/problem/446/C)|Codeforces|7|\n|<ul><li>- [ ] Done</li></ul>|97|[Ann and Half-Palindrome](http://codeforces.com/problemset/problem/557/E)|Codeforces|7|\n|<ul><li>- [ ] Done</li></ul>|98|[Kindergarten](http://codeforces.com/problemset/problem/484/D)|Codeforces|7|\n|<ul><li>- [ ] Done</li></ul>|99|[Tree and Queries](http://codeforces.com/problemset/problem/375/D)|Codeforces|7|\n|<ul><li>- [ ] Done</li></ul>|100|[Serega and Fun](http://codeforces.com/problemset/problem/455/D)|Codeforces|8|\n"
  },
  {
    "path": "ladders/19. 2000 <= Codeforces Rating <= 2099/README.md",
    "content": "# Ladder Name: 19 - 2000 <= Codeforces Rating <= 2099\n## Description\n For users satisfying this condition\n## Difficulty Level: 5\n\n| Checkbox | ID  | Problem Name | Online Judge | Difficulty |\n|---|:---:|:---:|---|---|\n|<ul><li>- [ ] Done</li></ul>|1|[Fox And Snake](http://codeforces.com/problemset/problem/510/A)|Codeforces|1|\n|<ul><li>- [ ] Done</li></ul>|2|[Pangram](http://codeforces.com/problemset/problem/520/A)|Codeforces|1|\n|<ul><li>- [ ] Done</li></ul>|3|[Vanya and Cubes](http://codeforces.com/problemset/problem/492/A)|Codeforces|1|\n|<ul><li>- [ ] Done</li></ul>|4|[Minimum Difficulty](http://codeforces.com/problemset/problem/496/A)|Codeforces|2|\n|<ul><li>- [ ] Done</li></ul>|5|[Dreamoon and WiFi](http://codeforces.com/problemset/problem/476/B)|Codeforces|3|\n|<ul><li>- [ ] Done</li></ul>|6|[Giga Tower](http://codeforces.com/problemset/problem/488/A)|Codeforces|3|\n|<ul><li>- [ ] Done</li></ul>|7|[Vanya and Lanterns](http://codeforces.com/problemset/problem/492/B)|Codeforces|3|\n|<ul><li>- [ ] Done</li></ul>|8|[Two Buttons](http://codeforces.com/problemset/problem/520/B)|Codeforces|4|\n|<ul><li>- [ ] Done</li></ul>|9|[Good Sequences](http://codeforces.com/problemset/problem/264/B)|Codeforces|4|\n|<ul><li>- [ ] Done</li></ul>|10|[Long Path](http://codeforces.com/problemset/problem/407/B)|Codeforces|4|\n|<ul><li>- [ ] Done</li></ul>|11|[Maximum Submatrix 2](http://codeforces.com/problemset/problem/375/B)|Codeforces|4|\n|<ul><li>- [ ] Done</li></ul>|12|[Glass Carving](http://codeforces.com/problemset/problem/527/C)|Codeforces|4|\n|<ul><li>- [ ] Done</li></ul>|13|[Factory](http://codeforces.com/problemset/problem/485/A)|Codeforces|4|\n|<ul><li>- [ ] Done</li></ul>|14|[Mr. Kitayuta, the Treasure Hunter](http://codeforces.com/problemset/problem/505/C)|Codeforces|4|\n|<ul><li>- [ ] Done</li></ul>|15|[Number of Ways](http://codeforces.com/problemset/problem/466/C)|Codeforces|4|\n|<ul><li>- [ ] Done</li></ul>|16|[Vanya and Exams](http://codeforces.com/problemset/problem/492/C)|Codeforces|4|\n|<ul><li>- [ ] Done</li></ul>|17|[Clique Problem](http://codeforces.com/problemset/problem/527/D)|Codeforces|4|\n|<ul><li>- [ ] Done</li></ul>|18|[Triangle](http://codeforces.com/problemset/problem/407/A)|Codeforces|4|\n|<ul><li>- [ ] Done</li></ul>|19|[DZY Loves Sequences](http://codeforces.com/problemset/problem/446/A)|Codeforces|4|\n|<ul><li>- [ ] Done</li></ul>|20|[Boredom](http://codeforces.com/problemset/problem/455/A)|Codeforces|4|\n|<ul><li>- [ ] Done</li></ul>|21|[Fox and Card Game](http://codeforces.com/problemset/problem/388/C)|Codeforces|5|\n|<ul><li>- [ ] Done</li></ul>|22|[Fox and Minimal path](http://codeforces.com/problemset/problem/388/B)|Codeforces|5|\n|<ul><li>- [ ] Done</li></ul>|23|[Drazil and Tiles](http://codeforces.com/problemset/problem/515/D)|Codeforces|5|\n|<ul><li>- [ ] Done</li></ul>|24|[Vanya and Field](http://codeforces.com/problemset/problem/492/E)|Codeforces|5|\n|<ul><li>- [ ] Done</li></ul>|25|[Watching Fireworks is Fun](http://codeforces.com/problemset/problem/372/C)|Codeforces|5|\n|<ul><li>- [ ] Done</li></ul>|26|[Sereja and Table ](http://codeforces.com/problemset/problem/425/B)|Codeforces|5|\n|<ul><li>- [ ] Done</li></ul>|27|[Ciel and Duel](http://codeforces.com/problemset/problem/321/B)|Codeforces|5|\n|<ul><li>- [ ] Done</li></ul>|28|[Three States](http://codeforces.com/problemset/problem/590/C)|Codeforces|5|\n|<ul><li>- [ ] Done</li></ul>|29|[Little Pony and Harmony Chest](http://codeforces.com/problemset/problem/453/B)|Codeforces|5|\n|<ul><li>- [ ] Done</li></ul>|30|[Increase Sequence](http://codeforces.com/problemset/problem/466/D)|Codeforces|5|\n|<ul><li>- [ ] Done</li></ul>|31|[Pashmak and Parmida's problem](http://codeforces.com/problemset/problem/459/D)|Codeforces|5|\n|<ul><li>- [ ] Done</li></ul>|32|[Levko and Array](http://codeforces.com/problemset/problem/360/B)|Codeforces|5|\n|<ul><li>- [ ] Done</li></ul>|33|[Vanya and Computer Game](http://codeforces.com/problemset/problem/492/D)|Codeforces|5|\n|<ul><li>- [ ] Done</li></ul>|34|[Appleman and a Sheet of Paper](http://codeforces.com/problemset/problem/461/C)|Codeforces|5|\n|<ul><li>- [ ] Done</li></ul>|35|[Jeff and Permutation](http://codeforces.com/problemset/problem/351/E)|Codeforces|5|\n|<ul><li>- [ ] Done</li></ul>|36|[Ciel the Commander](http://codeforces.com/problemset/problem/321/C)|Codeforces|5|\n|<ul><li>- [ ] Done</li></ul>|37|[Pair of Numbers](http://codeforces.com/problemset/problem/359/D)|Codeforces|5|\n|<ul><li>- [ ] Done</li></ul>|38|[Wonder Room](http://codeforces.com/problemset/problem/466/B)|Codeforces|5|\n|<ul><li>- [ ] Done</li></ul>|39|[Upgrading Array](http://codeforces.com/problemset/problem/402/D)|Codeforces|5|\n|<ul><li>- [ ] Done</li></ul>|40|[Pashmak and Graph](http://codeforces.com/problemset/problem/459/E)|Codeforces|5|\n|<ul><li>- [ ] Done</li></ul>|41|[DZY Loves Modification](http://codeforces.com/problemset/problem/446/B)|Codeforces|5|\n|<ul><li>- [ ] Done</li></ul>|42|[Water Tree](http://codeforces.com/problemset/problem/343/D)|Codeforces|5|\n|<ul><li>- [ ] Done</li></ul>|43|[Appleman and Tree](http://codeforces.com/problemset/problem/461/B)|Codeforces|5|\n|<ul><li>- [ ] Done</li></ul>|44|[Gerald and Giant Chess](http://codeforces.com/problemset/problem/559/C)|Codeforces|5|\n|<ul><li>- [ ] Done</li></ul>|45|[Array and Operations](http://codeforces.com/problemset/problem/498/C)|Codeforces|5|\n|<ul><li>- [ ] Done</li></ul>|46|[Restore Cube ](http://codeforces.com/problemset/problem/464/B)|Codeforces|5|\n|<ul><li>- [ ] Done</li></ul>|47|[Lucky Subsequence](http://codeforces.com/problemset/problem/145/C)|Codeforces|5|\n|<ul><li>- [ ] Done</li></ul>|48|[Little Elephant and Array](http://codeforces.com/problemset/problem/220/B)|Codeforces|5|\n|<ul><li>- [ ] Done</li></ul>|49|[Strip](http://codeforces.com/problemset/problem/487/B)|Codeforces|5|\n|<ul><li>- [ ] Done</li></ul>|50|[Sereja and Brackets](http://codeforces.com/problemset/problem/380/C)|Codeforces|5|\n|<ul><li>- [ ] Done</li></ul>|51|[Mashmokh and Reverse Operation](http://codeforces.com/problemset/problem/414/C)|Codeforces|5|\n|<ul><li>- [ ] Done</li></ul>|52|[Prefixes and Suffixes](http://codeforces.com/problemset/problem/432/D)|Codeforces|5|\n|<ul><li>- [ ] Done</li></ul>|53|[Propagating tree](http://codeforces.com/problemset/problem/383/C)|Codeforces|5|\n|<ul><li>- [ ] Done</li></ul>|54|[Two Sets](http://codeforces.com/problemset/problem/468/B)|Codeforces|5|\n|<ul><li>- [ ] Done</li></ul>|55|[Civilization](http://codeforces.com/problemset/problem/455/C)|Codeforces|5|\n|<ul><li>- [ ] Done</li></ul>|56|[Little Pony and Summer Sun Celebration](http://codeforces.com/problemset/problem/453/C)|Codeforces|5|\n|<ul><li>- [ ] Done</li></ul>|57|[Watto and Mechanism](http://codeforces.com/problemset/problem/514/C)|Codeforces|5|\n|<ul><li>- [ ] Done</li></ul>|58|[Substitutes in Number](http://codeforces.com/problemset/problem/464/C)|Codeforces|5|\n|<ul><li>- [ ] Done</li></ul>|59|[A Lot of Games](http://codeforces.com/problemset/problem/455/B)|Codeforces|5|\n|<ul><li>- [ ] Done</li></ul>|60|[Jzzhu and Cities](http://codeforces.com/problemset/problem/449/B)|Codeforces|5|\n|<ul><li>- [ ] Done</li></ul>|61|[Caisa and Tree](http://codeforces.com/problemset/problem/463/E)|Codeforces|6|\n|<ul><li>- [ ] Done</li></ul>|62|[Hill Climbing](http://codeforces.com/problemset/problem/406/D)|Codeforces|6|\n|<ul><li>- [ ] Done</li></ul>|63|[Mr. Kitayuta's Colorful Graph](http://codeforces.com/problemset/problem/506/D)|Codeforces|6|\n|<ul><li>- [ ] Done</li></ul>|64|[Double Profiles](http://codeforces.com/problemset/problem/154/C)|Codeforces|6|\n|<ul><li>- [ ] Done</li></ul>|65|[Number Transformation II](http://codeforces.com/problemset/problem/346/C)|Codeforces|6|\n|<ul><li>- [ ] Done</li></ul>|66|[Darth Vader and Tree](http://codeforces.com/problemset/problem/514/E)|Codeforces|6|\n|<ul><li>- [ ] Done</li></ul>|67|[Divisors](http://codeforces.com/problemset/problem/448/E)|Codeforces|6|\n|<ul><li>- [ ] Done</li></ul>|68|[Captains Mode](http://codeforces.com/problemset/problem/377/C)|Codeforces|6|\n|<ul><li>- [ ] Done</li></ul>|69|[Mike and Frog](http://codeforces.com/problemset/problem/547/A)|Codeforces|6|\n|<ul><li>- [ ] Done</li></ul>|70|[Sereja and Two Sequences](http://codeforces.com/problemset/problem/425/C)|Codeforces|6|\n|<ul><li>- [ ] Done</li></ul>|71|[A Simple Task](http://codeforces.com/problemset/problem/558/E)|Codeforces|6|\n|<ul><li>- [ ] Done</li></ul>|72|[Devu and Birthday Celebration](http://codeforces.com/problemset/problem/439/E)|Codeforces|6|\n|<ul><li>- [ ] Done</li></ul>|73|[Sereja and Squares](http://codeforces.com/problemset/problem/425/D)|Codeforces|6|\n|<ul><li>- [ ] Done</li></ul>|74|[Traffic Jams in the Land](http://codeforces.com/problemset/problem/498/D)|Codeforces|6|\n|<ul><li>- [ ] Done</li></ul>|75|[Match & Catch](http://codeforces.com/problemset/problem/427/D)|Codeforces|6|\n|<ul><li>- [ ] Done</li></ul>|76|[DZY Loves FFT](http://codeforces.com/problemset/problem/444/B)|Codeforces|6|\n|<ul><li>- [ ] Done</li></ul>|77|[The Child and Sequence](http://codeforces.com/problemset/problem/438/D)|Codeforces|6|\n|<ul><li>- [ ] Done</li></ul>|78|[Vasya and Beautiful Arrays](http://codeforces.com/problemset/problem/354/C)|Codeforces|6|\n|<ul><li>- [ ] Done</li></ul>|79|[Beautiful Pairs of Numbers](http://codeforces.com/problemset/problem/403/D)|Codeforces|6|\n|<ul><li>- [ ] Done</li></ul>|80|[Tricky Function](http://codeforces.com/problemset/problem/429/D)|Codeforces|6|\n|<ul><li>- [ ] Done</li></ul>|81|[Antimatter](http://codeforces.com/problemset/problem/383/D)|Codeforces|6|\n|<ul><li>- [ ] Done</li></ul>|82|[DZY Loves Colors](http://codeforces.com/problemset/problem/444/C)|Codeforces|6|\n|<ul><li>- [ ] Done</li></ul>|83|[Information Graph](http://codeforces.com/problemset/problem/466/E)|Codeforces|6|\n|<ul><li>- [ ] Done</li></ul>|84|[Jzzhu and Numbers](http://codeforces.com/problemset/problem/449/D)|Codeforces|6|\n|<ul><li>- [ ] Done</li></ul>|85|[Little Elephant and Inversions](http://codeforces.com/problemset/problem/220/E)|Codeforces|7|\n|<ul><li>- [ ] Done</li></ul>|86|[Subset Sums](http://codeforces.com/problemset/problem/348/C)|Codeforces|7|\n|<ul><li>- [ ] Done</li></ul>|87|[Arthur and Walls](http://codeforces.com/problemset/problem/525/D)|Codeforces|7|\n|<ul><li>- [ ] Done</li></ul>|88|[Mashmokh and Water Tanks](http://codeforces.com/problemset/problem/414/D)|Codeforces|7|\n|<ul><li>- [ ] Done</li></ul>|89|[Square Tiling](http://codeforces.com/problemset/problem/432/E)|Codeforces|7|\n|<ul><li>- [ ] Done</li></ul>|90|[Alex and Complicated Task](http://codeforces.com/problemset/problem/467/E)|Codeforces|7|\n|<ul><li>- [ ] Done</li></ul>|91|[Fedor and Essay](http://codeforces.com/problemset/problem/467/D)|Codeforces|7|\n|<ul><li>- [ ] Done</li></ul>|92|[Case of a Top Secret](http://codeforces.com/problemset/problem/555/D)|Codeforces|7|\n|<ul><li>- [ ] Done</li></ul>|93|[Xenia and Tree](http://codeforces.com/problemset/problem/342/E)|Codeforces|7|\n|<ul><li>- [ ] Done</li></ul>|94|[Kindergarten](http://codeforces.com/problemset/problem/484/D)|Codeforces|7|\n|<ul><li>- [ ] Done</li></ul>|95|[Artem and Array ](http://codeforces.com/problemset/problem/442/C)|Codeforces|7|\n|<ul><li>- [ ] Done</li></ul>|96|[Jzzhu and Apples](http://codeforces.com/problemset/problem/449/C)|Codeforces|7|\n|<ul><li>- [ ] Done</li></ul>|97|[DZY Loves Fibonacci Numbers](http://codeforces.com/problemset/problem/446/C)|Codeforces|7|\n|<ul><li>- [ ] Done</li></ul>|98|[Polo the Penguin and Trees ](http://codeforces.com/problemset/problem/288/D)|Codeforces|8|\n|<ul><li>- [ ] Done</li></ul>|99|[Sign on Fence](http://codeforces.com/problemset/problem/484/E)|Codeforces|8|\n|<ul><li>- [ ] Done</li></ul>|100|[Serega and Fun](http://codeforces.com/problemset/problem/455/D)|Codeforces|8|\n"
  },
  {
    "path": "ladders/20. 2100 <= Codeforces Rating <= 2199/README.md",
    "content": "# Ladder Name: 20 - 2100 <= Codeforces Rating <= 2199\n## Description\n For users satisfying this condition\n## Difficulty Level: 5\n\n| Checkbox | ID  | Problem Name | Online Judge | Difficulty |\n|---|:---:|:---:|---|---|\n|<ul><li>- [ ] Done</li></ul>|1|[Anton and Letters](http://codeforces.com/problemset/problem/443/A)|Codeforces|1|\n|<ul><li>- [ ] Done</li></ul>|2|[Watching a movie](http://codeforces.com/problemset/problem/499/A)|Codeforces|2|\n|<ul><li>- [ ] Done</li></ul>|3|[Expression](http://codeforces.com/problemset/problem/479/A)|Codeforces|2|\n|<ul><li>- [ ] Done</li></ul>|4|[Caisa and Pylons](http://codeforces.com/problemset/problem/463/B)|Codeforces|2|\n|<ul><li>- [ ] Done</li></ul>|5|[Appleman and Easy Task](http://codeforces.com/problemset/problem/462/A)|Codeforces|2|\n|<ul><li>- [ ] Done</li></ul>|6|[DZY Loves Strings](http://codeforces.com/problemset/problem/447/B)|Codeforces|2|\n|<ul><li>- [ ] Done</li></ul>|7|[DZY Loves Hash](http://codeforces.com/problemset/problem/447/A)|Codeforces|2|\n|<ul><li>- [ ] Done</li></ul>|8|[inc ARG](http://codeforces.com/problemset/problem/465/A)|Codeforces|2|\n|<ul><li>- [ ] Done</li></ul>|9|[Inbox (100500)](http://codeforces.com/problemset/problem/465/B)|Codeforces|2|\n|<ul><li>- [ ] Done</li></ul>|10|[Mike and Fax](http://codeforces.com/problemset/problem/548/A)|Codeforces|3|\n|<ul><li>- [ ] Done</li></ul>|11|[Caisa and Sugar](http://codeforces.com/problemset/problem/463/A)|Codeforces|3|\n|<ul><li>- [ ] Done</li></ul>|12|[Laptops](http://codeforces.com/problemset/problem/456/A)|Codeforces|3|\n|<ul><li>- [ ] Done</li></ul>|13|[Set of Strings](http://codeforces.com/problemset/problem/544/A)|Codeforces|3|\n|<ul><li>- [ ] Done</li></ul>|14|[DZY Loves Chessboard](http://codeforces.com/problemset/problem/445/A)|Codeforces|3|\n|<ul><li>- [ ] Done</li></ul>|15|[Fedya and Maths](http://codeforces.com/problemset/problem/456/B)|Codeforces|3|\n|<ul><li>- [ ] Done</li></ul>|16|[Andrey and Problem](http://codeforces.com/problemset/problem/442/B)|Codeforces|4|\n|<ul><li>- [ ] Done</li></ul>|17|[Suffix Structures](http://codeforces.com/problemset/problem/448/B)|Codeforces|4|\n|<ul><li>- [ ] Done</li></ul>|18|[Towers](http://codeforces.com/problemset/problem/479/B)|Codeforces|4|\n|<ul><li>- [ ] Done</li></ul>|19|[Kyoya and Permutation](http://codeforces.com/problemset/problem/553/B)|Codeforces|4|\n|<ul><li>- [ ] Done</li></ul>|20|[Kolya and Tandem Repeat](http://codeforces.com/problemset/problem/443/B)|Codeforces|4|\n|<ul><li>- [ ] Done</li></ul>|21|[Sea and Islands](http://codeforces.com/problemset/problem/544/B)|Codeforces|4|\n|<ul><li>- [ ] Done</li></ul>|22|[Writing Code](http://codeforces.com/problemset/problem/543/A)|Codeforces|4|\n|<ul><li>- [ ] Done</li></ul>|23|[Interesting Array](http://codeforces.com/problemset/problem/482/B)|Codeforces|4|\n|<ul><li>- [ ] Done</li></ul>|24|[DZY Loves Sequences](http://codeforces.com/problemset/problem/446/A)|Codeforces|4|\n|<ul><li>- [ ] Done</li></ul>|25|[DZY Loves Physics](http://codeforces.com/problemset/problem/444/A)|Codeforces|4|\n|<ul><li>- [ ] Done</li></ul>|26|[Maximum Xor Secondary](http://codeforces.com/problemset/problem/280/B)|Codeforces|4|\n|<ul><li>- [ ] Done</li></ul>|27|[Two Sets](http://codeforces.com/problemset/problem/468/B)|Codeforces|5|\n|<ul><li>- [ ] Done</li></ul>|28|[Maximum Value](http://codeforces.com/problemset/problem/484/B)|Codeforces|5|\n|<ul><li>- [ ] Done</li></ul>|29|[Jeff and Permutation](http://codeforces.com/problemset/problem/351/E)|Codeforces|5|\n|<ul><li>- [ ] Done</li></ul>|30|[Case of Fugitive](http://codeforces.com/problemset/problem/555/B)|Codeforces|5|\n|<ul><li>- [ ] Done</li></ul>|31|[Main Sequence](http://codeforces.com/problemset/problem/286/C)|Codeforces|5|\n|<ul><li>- [ ] Done</li></ul>|32|[Gargari and Permutations](http://codeforces.com/problemset/problem/463/D)|Codeforces|5|\n|<ul><li>- [ ] Done</li></ul>|33|[Vanya and Scales](http://codeforces.com/problemset/problem/552/C)|Codeforces|5|\n|<ul><li>- [ ] Done</li></ul>|34|[Appleman and Tree](http://codeforces.com/problemset/problem/461/B)|Codeforces|5|\n|<ul><li>- [ ] Done</li></ul>|35|[Soldier and Number Game](http://codeforces.com/problemset/problem/546/D)|Codeforces|5|\n|<ul><li>- [ ] Done</li></ul>|36|[Propagating tree](http://codeforces.com/problemset/problem/383/C)|Codeforces|5|\n|<ul><li>- [ ] Done</li></ul>|37|[Array and Operations](http://codeforces.com/problemset/problem/498/C)|Codeforces|5|\n|<ul><li>- [ ] Done</li></ul>|38|[Restore Cube ](http://codeforces.com/problemset/problem/464/B)|Codeforces|5|\n|<ul><li>- [ ] Done</li></ul>|39|[Dima and Trap Graph](http://codeforces.com/problemset/problem/366/D)|Codeforces|5|\n|<ul><li>- [ ] Done</li></ul>|40|[Civilization](http://codeforces.com/problemset/problem/455/C)|Codeforces|5|\n|<ul><li>- [ ] Done</li></ul>|41|[Destroying Roads](http://codeforces.com/problemset/problem/543/B)|Codeforces|5|\n|<ul><li>- [ ] Done</li></ul>|42|[Painting Fence](http://codeforces.com/problemset/problem/448/C)|Codeforces|5|\n|<ul><li>- [ ] Done</li></ul>|43|[Little Pony and Summer Sun Celebration](http://codeforces.com/problemset/problem/453/C)|Codeforces|5|\n|<ul><li>- [ ] Done</li></ul>|44|[Shifting](http://codeforces.com/problemset/problem/286/B)|Codeforces|5|\n|<ul><li>- [ ] Done</li></ul>|45|[Gargari and Bishops](http://codeforces.com/problemset/problem/463/C)|Codeforces|5|\n|<ul><li>- [ ] Done</li></ul>|46|[Appleman and a Sheet of Paper](http://codeforces.com/problemset/problem/461/C)|Codeforces|5|\n|<ul><li>- [ ] Done</li></ul>|47|[Jzzhu and Chocolate](http://codeforces.com/problemset/problem/449/A)|Codeforces|5|\n|<ul><li>- [ ] Done</li></ul>|48|[Drazil and Tiles](http://codeforces.com/problemset/problem/515/D)|Codeforces|5|\n|<ul><li>- [ ] Done</li></ul>|49|[Kalila and Dimna in the Logging Industry](http://codeforces.com/problemset/problem/319/C)|Codeforces|5|\n|<ul><li>- [ ] Done</li></ul>|50|[Equivalent Strings](http://codeforces.com/problemset/problem/559/B)|Codeforces|5|\n|<ul><li>- [ ] Done</li></ul>|51|[Substitutes in Number](http://codeforces.com/problemset/problem/464/C)|Codeforces|5|\n|<ul><li>- [ ] Done</li></ul>|52|[Jzzhu and Cities](http://codeforces.com/problemset/problem/449/B)|Codeforces|5|\n|<ul><li>- [ ] Done</li></ul>|53|[Information Graph](http://codeforces.com/problemset/problem/466/E)|Codeforces|6|\n|<ul><li>- [ ] Done</li></ul>|54|[Mike and Foam](http://codeforces.com/problemset/problem/547/C)|Codeforces|6|\n|<ul><li>- [ ] Done</li></ul>|55|[Brackets in Implications](http://codeforces.com/problemset/problem/550/E)|Codeforces|6|\n|<ul><li>- [ ] Done</li></ul>|56|[Hill Climbing](http://codeforces.com/problemset/problem/406/D)|Codeforces|6|\n|<ul><li>- [ ] Done</li></ul>|57|[Divisors](http://codeforces.com/problemset/problem/448/E)|Codeforces|6|\n|<ul><li>- [ ] Done</li></ul>|58|[Tree Requests](http://codeforces.com/problemset/problem/570/D)|Codeforces|6|\n|<ul><li>- [ ] Done</li></ul>|59|[DZY Loves FFT](http://codeforces.com/problemset/problem/444/B)|Codeforces|6|\n|<ul><li>- [ ] Done</li></ul>|60|[Guess the Tree](http://codeforces.com/problemset/problem/429/C)|Codeforces|6|\n|<ul><li>- [ ] Done</li></ul>|61|[Caisa and Tree](http://codeforces.com/problemset/problem/463/E)|Codeforces|6|\n|<ul><li>- [ ] Done</li></ul>|62|[Darth Vader and Tree](http://codeforces.com/problemset/problem/514/E)|Codeforces|6|\n|<ul><li>- [ ] Done</li></ul>|63|[Prefix Product Sequence](http://codeforces.com/problemset/problem/487/C)|Codeforces|6|\n|<ul><li>- [ ] Done</li></ul>|64|[Traffic Jams in the Land](http://codeforces.com/problemset/problem/498/D)|Codeforces|6|\n|<ul><li>- [ ] Done</li></ul>|65|[Name That Tune](http://codeforces.com/problemset/problem/498/B)|Codeforces|6|\n|<ul><li>- [ ] Done</li></ul>|66|[Mr. Kitayuta's Colorful Graph](http://codeforces.com/problemset/problem/506/D)|Codeforces|6|\n|<ul><li>- [ ] Done</li></ul>|67|[Tricky Function](http://codeforces.com/problemset/problem/429/D)|Codeforces|6|\n|<ul><li>- [ ] Done</li></ul>|68|[Drazil and Park](http://codeforces.com/problemset/problem/515/E)|Codeforces|6|\n|<ul><li>- [ ] Done</li></ul>|69|[The Child and Sequence](http://codeforces.com/problemset/problem/438/D)|Codeforces|6|\n|<ul><li>- [ ] Done</li></ul>|70|[Road Improvement](http://codeforces.com/problemset/problem/543/D)|Codeforces|6|\n|<ul><li>- [ ] Done</li></ul>|71|[Dreamoon and Strings](http://codeforces.com/problemset/problem/476/E)|Codeforces|6|\n|<ul><li>- [ ] Done</li></ul>|72|[Fox And Dinner](http://codeforces.com/problemset/problem/510/E)|Codeforces|6|\n|<ul><li>- [ ] Done</li></ul>|73|[Jzzhu and Numbers](http://codeforces.com/problemset/problem/449/D)|Codeforces|6|\n|<ul><li>- [ ] Done</li></ul>|74|[Adam and Tree](http://codeforces.com/problemset/problem/442/D)|Codeforces|7|\n|<ul><li>- [ ] Done</li></ul>|75|[Remembering Strings](http://codeforces.com/problemset/problem/543/C)|Codeforces|7|\n|<ul><li>- [ ] Done</li></ul>|76|[Alex and Complicated Task](http://codeforces.com/problemset/problem/467/E)|Codeforces|7|\n|<ul><li>- [ ] Done</li></ul>|77|[Tree and Queries](http://codeforces.com/problemset/problem/375/D)|Codeforces|7|\n|<ul><li>- [ ] Done</li></ul>|78|[Tachibana Kanade's Tofu](http://codeforces.com/problemset/problem/433/E)|Codeforces|7|\n|<ul><li>- [ ] Done</li></ul>|79|[DZY Loves Strings](http://codeforces.com/problemset/problem/444/D)|Codeforces|7|\n|<ul><li>- [ ] Done</li></ul>|80|[Guess Your Way Out! II](http://codeforces.com/problemset/problem/558/D)|Codeforces|7|\n|<ul><li>- [ ] Done</li></ul>|81|[XOR and Favorite Number](http://codeforces.com/problemset/problem/617/E)|Codeforces|7|\n|<ul><li>- [ ] Done</li></ul>|82|[Volcanoes](http://codeforces.com/problemset/problem/383/B)|Codeforces|7|\n|<ul><li>- [ ] Done</li></ul>|83|[Artem and Array ](http://codeforces.com/problemset/problem/442/C)|Codeforces|7|\n|<ul><li>- [ ] Done</li></ul>|84|[Arthur and Walls](http://codeforces.com/problemset/problem/525/D)|Codeforces|7|\n|<ul><li>- [ ] Done</li></ul>|85|[Fedor and Essay](http://codeforces.com/problemset/problem/467/D)|Codeforces|7|\n|<ul><li>- [ ] Done</li></ul>|86|[Pig and Palindromes](http://codeforces.com/problemset/problem/570/E)|Codeforces|7|\n|<ul><li>- [ ] Done</li></ul>|87|[GukiZ and Binary Operations](http://codeforces.com/problemset/problem/551/D)|Codeforces|7|\n|<ul><li>- [ ] Done</li></ul>|88|[Hack it!](http://codeforces.com/problemset/problem/468/C)|Codeforces|7|\n|<ul><li>- [ ] Done</li></ul>|89|[Case of a Top Secret](http://codeforces.com/problemset/problem/555/D)|Codeforces|7|\n|<ul><li>- [ ] Done</li></ul>|90|[GukiZ and GukiZiana](http://codeforces.com/problemset/problem/551/E)|Codeforces|7|\n|<ul><li>- [ ] Done</li></ul>|91|[DZY Loves Fibonacci Numbers](http://codeforces.com/problemset/problem/446/C)|Codeforces|7|\n|<ul><li>- [ ] Done</li></ul>|92|[Jzzhu and Apples](http://codeforces.com/problemset/problem/449/C)|Codeforces|7|\n|<ul><li>- [ ] Done</li></ul>|93|[Vowels](http://codeforces.com/problemset/problem/383/E)|Codeforces|8|\n|<ul><li>- [ ] Done</li></ul>|94|[Ciel and Gondolas](http://codeforces.com/problemset/problem/321/E)|Codeforces|8|\n|<ul><li>- [ ] Done</li></ul>|95|[Game with Strings](http://codeforces.com/problemset/problem/482/C)|Codeforces|8|\n|<ul><li>- [ ] Done</li></ul>|96|[Helping People](http://codeforces.com/problemset/problem/494/C)|Codeforces|8|\n|<ul><li>- [ ] Done</li></ul>|97|[Mike and Fish](http://codeforces.com/problemset/problem/547/D)|Codeforces|8|\n|<ul><li>- [ ] Done</li></ul>|98|[Mike and Friends](http://codeforces.com/problemset/problem/547/E)|Codeforces|8|\n|<ul><li>- [ ] Done</li></ul>|99|[Serega and Fun](http://codeforces.com/problemset/problem/455/D)|Codeforces|8|\n|<ul><li>- [ ] Done</li></ul>|100|[Function](http://codeforces.com/problemset/problem/455/E)|Codeforces|9|\n"
  },
  {
    "path": "ladders/21. Codeforces Rating >= 2200/README.md",
    "content": "# Ladder Name: 21 - Codeforces Rating >= 2200\n## Description\n For experienced users or users with Codeforces Rating >= 2200.\n## Difficulty Level: 6\n\n| Checkbox | ID  | Problem Name | Online Judge | Difficulty |\n|---|:---:|:---:|---|---|\n|<ul><li>- [ ] Done</li></ul>|1|[Pangram](http://codeforces.com/problemset/problem/520/A)|Codeforces|1|\n|<ul><li>- [ ] Done</li></ul>|2|[Fox And Snake](http://codeforces.com/problemset/problem/510/A)|Codeforces|1|\n|<ul><li>- [ ] Done</li></ul>|3|[Insomnia cure](http://codeforces.com/problemset/problem/148/A)|Codeforces|1|\n|<ul><li>- [ ] Done</li></ul>|4|[Watching a movie](http://codeforces.com/problemset/problem/499/A)|Codeforces|2|\n|<ul><li>- [ ] Done</li></ul>|5|[Dreamoon and WiFi](http://codeforces.com/problemset/problem/476/B)|Codeforces|3|\n|<ul><li>- [ ] Done</li></ul>|6|[Playing with Paper](http://codeforces.com/problemset/problem/527/A)|Codeforces|3|\n|<ul><li>- [ ] Done</li></ul>|7|[Link/Cut Tree](http://codeforces.com/problemset/problem/614/A)|Codeforces|4|\n|<ul><li>- [ ] Done</li></ul>|8|[Crazy Town](http://codeforces.com/problemset/problem/498/A)|Codeforces|4|\n|<ul><li>- [ ] Done</li></ul>|9|[Mr. Kitayuta, the Treasure Hunter](http://codeforces.com/problemset/problem/505/C)|Codeforces|4|\n|<ul><li>- [ ] Done</li></ul>|10|[Tennis Game](http://codeforces.com/problemset/problem/496/D)|Codeforces|4|\n|<ul><li>- [ ] Done</li></ul>|11|[Number of Ways](http://codeforces.com/problemset/problem/466/C)|Codeforces|4|\n|<ul><li>- [ ] Done</li></ul>|12|[Error Correct System](http://codeforces.com/problemset/problem/527/B)|Codeforces|4|\n|<ul><li>- [ ] Done</li></ul>|13|[Fight the Monster](http://codeforces.com/problemset/problem/487/A)|Codeforces|4|\n|<ul><li>- [ ] Done</li></ul>|14|[Skills](http://codeforces.com/problemset/problem/613/B)|Codeforces|4|\n|<ul><li>- [ ] Done</li></ul>|15|[Clique Problem](http://codeforces.com/problemset/problem/527/D)|Codeforces|4|\n|<ul><li>- [ ] Done</li></ul>|16|[Glass Carving](http://codeforces.com/problemset/problem/527/C)|Codeforces|4|\n|<ul><li>- [ ] Done</li></ul>|17|[Edo and Magnets](http://codeforces.com/problemset/problem/594/C)|Codeforces|5|\n|<ul><li>- [ ] Done</li></ul>|18|[Appleman and a Sheet of Paper](http://codeforces.com/problemset/problem/461/C)|Codeforces|5|\n|<ul><li>- [ ] Done</li></ul>|19|[Numbers](http://codeforces.com/problemset/problem/128/D)|Codeforces|5|\n|<ul><li>- [ ] Done</li></ul>|20|[Greg and Friends](http://codeforces.com/problemset/problem/295/C)|Codeforces|5|\n|<ul><li>- [ ] Done</li></ul>|21|[Watto and Mechanism](http://codeforces.com/problemset/problem/514/C)|Codeforces|5|\n|<ul><li>- [ ] Done</li></ul>|22|[Jeff and Permutation](http://codeforces.com/problemset/problem/351/E)|Codeforces|5|\n|<ul><li>- [ ] Done</li></ul>|23|[Sereja and Brackets](http://codeforces.com/problemset/problem/380/C)|Codeforces|5|\n|<ul><li>- [ ] Done</li></ul>|24|[Freelancer's Dreams](http://codeforces.com/problemset/problem/605/C)|Codeforces|5|\n|<ul><li>- [ ] Done</li></ul>|25|[Hexagons](http://codeforces.com/problemset/problem/615/E)|Codeforces|5|\n|<ul><li>- [ ] Done</li></ul>|26|[Valid Sets](http://codeforces.com/problemset/problem/486/D)|Codeforces|5|\n|<ul><li>- [ ] Done</li></ul>|27|[Multipliers](http://codeforces.com/problemset/problem/615/D)|Codeforces|5|\n|<ul><li>- [ ] Done</li></ul>|28|[Top Secret Task](http://codeforces.com/problemset/problem/590/D)|Codeforces|5|\n|<ul><li>- [ ] Done</li></ul>|29|[Characteristics of Rectangles](http://codeforces.com/problemset/problem/333/D)|Codeforces|5|\n|<ul><li>- [ ] Done</li></ul>|30|[Tavas and Malekas](http://codeforces.com/problemset/problem/535/D)|Codeforces|5|\n|<ul><li>- [ ] Done</li></ul>|31|[Destroying Roads](http://codeforces.com/problemset/problem/543/B)|Codeforces|5|\n|<ul><li>- [ ] Done</li></ul>|32|[Mr. Kitayuta's Technology](http://codeforces.com/problemset/problem/505/D)|Codeforces|5|\n|<ul><li>- [ ] Done</li></ul>|33|[Maximum Value](http://codeforces.com/problemset/problem/484/B)|Codeforces|5|\n|<ul><li>- [ ] Done</li></ul>|34|[Three States](http://codeforces.com/problemset/problem/590/C)|Codeforces|5|\n|<ul><li>- [ ] Done</li></ul>|35|[Antimatter](http://codeforces.com/problemset/problem/383/D)|Codeforces|6|\n|<ul><li>- [ ] Done</li></ul>|36|[Dreamoon and Strings](http://codeforces.com/problemset/problem/476/E)|Codeforces|6|\n|<ul><li>- [ ] Done</li></ul>|37|[Necklace](http://codeforces.com/problemset/problem/613/C)|Codeforces|6|\n|<ul><li>- [ ] Done</li></ul>|38|[Number Transformation II](http://codeforces.com/problemset/problem/346/C)|Codeforces|6|\n|<ul><li>- [ ] Done</li></ul>|39|[Tricky Function](http://codeforces.com/problemset/problem/429/D)|Codeforces|6|\n|<ul><li>- [ ] Done</li></ul>|40|[REQ](http://codeforces.com/problemset/problem/594/D)|Codeforces|6|\n|<ul><li>- [ ] Done</li></ul>|41|[Soldier and Traveling](http://codeforces.com/problemset/problem/546/E)|Codeforces|6|\n|<ul><li>- [ ] Done</li></ul>|42|[Board Game](http://codeforces.com/problemset/problem/605/D)|Codeforces|6|\n|<ul><li>- [ ] Done</li></ul>|43|[Jzzhu and Numbers](http://codeforces.com/problemset/problem/449/D)|Codeforces|6|\n|<ul><li>- [ ] Done</li></ul>|44|[Name That Tune](http://codeforces.com/problemset/problem/498/B)|Codeforces|6|\n|<ul><li>- [ ] Done</li></ul>|45|[Zip-line](http://codeforces.com/problemset/problem/650/D)|Codeforces|6|\n|<ul><li>- [ ] Done</li></ul>|46|[Nudist Beach](http://codeforces.com/problemset/problem/553/D)|Codeforces|6|\n|<ul><li>- [ ] Done</li></ul>|47|[Mr. Kitayuta's Colorful Graph](http://codeforces.com/problemset/problem/506/D)|Codeforces|6|\n|<ul><li>- [ ] Done</li></ul>|48|[Fox And Dinner](http://codeforces.com/problemset/problem/510/E)|Codeforces|6|\n|<ul><li>- [ ] Done</li></ul>|49|[Traffic Jams in the Land](http://codeforces.com/problemset/problem/498/D)|Codeforces|6|\n|<ul><li>- [ ] Done</li></ul>|50|[Mike and Frog](http://codeforces.com/problemset/problem/547/A)|Codeforces|6|\n|<ul><li>- [ ] Done</li></ul>|51|[Prefix Product Sequence](http://codeforces.com/problemset/problem/487/C)|Codeforces|6|\n|<ul><li>- [ ] Done</li></ul>|52|[Road Improvement](http://codeforces.com/problemset/problem/543/D)|Codeforces|6|\n|<ul><li>- [ ] Done</li></ul>|53|[Ann and Half-Palindrome](http://codeforces.com/problemset/problem/557/E)|Codeforces|7|\n|<ul><li>- [ ] Done</li></ul>|54|[Tanya and Password](http://codeforces.com/problemset/problem/508/D)|Codeforces|7|\n|<ul><li>- [ ] Done</li></ul>|55|[Tree and Queries](http://codeforces.com/problemset/problem/375/D)|Codeforces|7|\n|<ul><li>- [ ] Done</li></ul>|56|[Cats Transport](http://codeforces.com/problemset/problem/311/B)|Codeforces|7|\n|<ul><li>- [ ] Done</li></ul>|57|[Greg and Caves](http://codeforces.com/problemset/problem/295/D)|Codeforces|7|\n|<ul><li>- [ ] Done</li></ul>|58|[Jzzhu and Apples](http://codeforces.com/problemset/problem/449/C)|Codeforces|7|\n|<ul><li>- [ ] Done</li></ul>|59|[Developing Game](http://codeforces.com/problemset/problem/377/D)|Codeforces|7|\n|<ul><li>- [ ] Done</li></ul>|60|[Fuzzy Search](http://codeforces.com/problemset/problem/528/D)|Codeforces|7|\n|<ul><li>- [ ] Done</li></ul>|61|[Case of a Top Secret](http://codeforces.com/problemset/problem/555/D)|Codeforces|7|\n|<ul><li>- [ ] Done</li></ul>|62|[CNF 2](http://codeforces.com/problemset/problem/571/C)|Codeforces|7|\n|<ul><li>- [ ] Done</li></ul>|63|[GukiZ and GukiZiana](http://codeforces.com/problemset/problem/551/E)|Codeforces|7|\n|<ul><li>- [ ] Done</li></ul>|64|[Arthur and Walls](http://codeforces.com/problemset/problem/525/D)|Codeforces|7|\n|<ul><li>- [ ] Done</li></ul>|65|[Kingdom and its Cities](http://codeforces.com/problemset/problem/613/D)|Codeforces|7|\n|<ul><li>- [ ] Done</li></ul>|66|[Tavas and Pashmaks](http://codeforces.com/problemset/problem/535/E)|Codeforces|7|\n|<ul><li>- [ ] Done</li></ul>|67|[Data Center Drama](http://codeforces.com/problemset/problem/527/E)|Codeforces|7|\n|<ul><li>- [ ] Done</li></ul>|68|[Hack it!](http://codeforces.com/problemset/problem/468/C)|Codeforces|7|\n|<ul><li>- [ ] Done</li></ul>|69|[Remembering Strings](http://codeforces.com/problemset/problem/543/C)|Codeforces|7|\n|<ul><li>- [ ] Done</li></ul>|70|[Kindergarten](http://codeforces.com/problemset/problem/484/D)|Codeforces|7|\n|<ul><li>- [ ] Done</li></ul>|71|[DZY Loves Planting](http://codeforces.com/problemset/problem/444/E)|Codeforces|8|\n|<ul><li>- [ ] Done</li></ul>|72|[Tavas in Kansas](http://codeforces.com/problemset/problem/536/D)|Codeforces|8|\n|<ul><li>- [ ] Done</li></ul>|73|[Intergalaxy Trips](http://codeforces.com/problemset/problem/605/E)|Codeforces|8|\n|<ul><li>- [ ] Done</li></ul>|74|[Largest Submatrix 3](http://codeforces.com/problemset/problem/407/D)|Codeforces|8|\n|<ul><li>- [ ] Done</li></ul>|75|[Serega and Fun](http://codeforces.com/problemset/problem/455/D)|Codeforces|8|\n|<ul><li>- [ ] Done</li></ul>|76|[Sign on Fence](http://codeforces.com/problemset/problem/484/E)|Codeforces|8|\n|<ul><li>- [ ] Done</li></ul>|77|[Ciel and Gondolas](http://codeforces.com/problemset/problem/321/E)|Codeforces|8|\n|<ul><li>- [ ] Done</li></ul>|78|[Sign Posts](http://codeforces.com/problemset/problem/568/D)|Codeforces|8|\n|<ul><li>- [ ] Done</li></ul>|79|[Positions in Permutations](http://codeforces.com/problemset/problem/285/E)|Codeforces|8|\n|<ul><li>- [ ] Done</li></ul>|80|[Mike and Friends](http://codeforces.com/problemset/problem/547/E)|Codeforces|8|\n|<ul><li>- [ ] Done</li></ul>|81|[Appleman and Complicated Task](http://codeforces.com/problemset/problem/461/D)|Codeforces|8|\n|<ul><li>- [ ] Done</li></ul>|82|[Stairs and Lines](http://codeforces.com/problemset/problem/498/E)|Codeforces|8|\n|<ul><li>- [ ] Done</li></ul>|83|[Helping People](http://codeforces.com/problemset/problem/494/C)|Codeforces|8|\n|<ul><li>- [ ] Done</li></ul>|84|[Birthday](http://codeforces.com/problemset/problem/494/D)|Codeforces|8|\n|<ul><li>- [ ] Done</li></ul>|85|[Dreamoon and Binary](http://codeforces.com/problemset/problem/477/D)|Codeforces|8|\n|<ul><li>- [ ] Done</li></ul>|86|[Conveyor Belts](http://codeforces.com/problemset/problem/487/D)|Codeforces|8|\n|<ul><li>- [ ] Done</li></ul>|87|[Mr. Kitayuta vs. Bamboos](http://codeforces.com/problemset/problem/505/E)|Codeforces|8|\n|<ul><li>- [ ] Done</li></ul>|88|[A Museum Robbery](http://codeforces.com/problemset/problem/601/E)|Codeforces|8|\n|<ul><li>- [ ] Done</li></ul>|89|[Fox And Travelling](http://codeforces.com/problemset/problem/512/D)|Codeforces|8|\n|<ul><li>- [ ] Done</li></ul>|90|[Little Elephant and Broken Sorting](http://codeforces.com/problemset/problem/258/D)|Codeforces|8|\n|<ul><li>- [ ] Done</li></ul>|91|[Mike and Fish](http://codeforces.com/problemset/problem/547/D)|Codeforces|8|\n|<ul><li>- [ ] Done</li></ul>|92|[Strange Sorting](http://codeforces.com/problemset/problem/484/C)|Codeforces|8|\n|<ul><li>- [ ] Done</li></ul>|93|[Case of Computer Network](http://codeforces.com/problemset/problem/555/E)|Codeforces|8|\n|<ul><li>- [ ] Done</li></ul>|94|[Shop](http://codeforces.com/problemset/problem/521/D)|Codeforces|8|\n|<ul><li>- [ ] Done</li></ul>|95|[Gerald and Path](http://codeforces.com/problemset/problem/559/E)|Codeforces|9|\n|<ul><li>- [ ] Done</li></ul>|96|[Tavas on the Path](http://codeforces.com/problemset/problem/536/E)|Codeforces|9|\n|<ul><li>- [ ] Done</li></ul>|97|[Polo the Penguin and Lucky Numbers](http://codeforces.com/problemset/problem/288/E)|Codeforces|9|\n|<ul><li>- [ ] Done</li></ul>|98|[Ghd](http://codeforces.com/problemset/problem/364/D)|Codeforces|9|\n|<ul><li>- [ ] Done</li></ul>|99|[Warrior and Archer](http://codeforces.com/problemset/problem/594/A)|Codeforces|9|\n|<ul><li>- [ ] Done</li></ul>|100|[Birthday](http://codeforces.com/problemset/problem/590/E)|Codeforces|10|\n"
  },
  {
    "path": "ladders/22. Codeforces Rating < 1300 (Extra)/README.md",
    "content": "# Ladder Name: 22 - Codeforces Rating < 1300 (Extra)\n## Description\n Extra problems for beginners, unrated users or users with Codeforces Rating < 1300 (Extra).\n## Difficulty Level: 3\n\n| Checkbox | ID  | Problem Name | Online Judge | Difficulty |\n|---|:---:|:---:|---|---|\n|<ul><li>- [ ] Done</li></ul>|1|[Crazy Computer](http://codeforces.com/problemset/problem/716/A)|Codeforces|1|\n|<ul><li>- [ ] Done</li></ul>|2|[Haiku](http://codeforces.com/problemset/problem/78/A)|Codeforces|1|\n|<ul><li>- [ ] Done</li></ul>|3|[LLPS](http://codeforces.com/problemset/problem/202/A)|Codeforces|1|\n|<ul><li>- [ ] Done</li></ul>|4|[Wizards' Duel](http://codeforces.com/problemset/problem/591/A)|Codeforces|1|\n|<ul><li>- [ ] Done</li></ul>|5|[George and Accommodation](http://codeforces.com/problemset/problem/467/A)|Codeforces|1|\n|<ul><li>- [ ] Done</li></ul>|6|[Soldier and Bananas](http://codeforces.com/problemset/problem/546/A)|Codeforces|1|\n|<ul><li>- [ ] Done</li></ul>|7|[GukiZ and Contest](http://codeforces.com/problemset/problem/551/A)|Codeforces|1|\n|<ul><li>- [ ] Done</li></ul>|8|[Wasted Time](http://codeforces.com/problemset/problem/127/A)|Codeforces|1|\n|<ul><li>- [ ] Done</li></ul>|9|[Combination Lock](http://codeforces.com/problemset/problem/540/A)|Codeforces|1|\n|<ul><li>- [ ] Done</li></ul>|10|[Vitaly and Night](http://codeforces.com/problemset/problem/595/A)|Codeforces|1|\n|<ul><li>- [ ] Done</li></ul>|11|[Shaass and Oskols](http://codeforces.com/problemset/problem/294/A)|Codeforces|1|\n|<ul><li>- [ ] Done</li></ul>|12|[Sereja and Mugs](http://codeforces.com/problemset/problem/426/A)|Codeforces|1|\n|<ul><li>- [ ] Done</li></ul>|13|[Line to Cashier](http://codeforces.com/problemset/problem/408/A)|Codeforces|1|\n|<ul><li>- [ ] Done</li></ul>|14|[Mashmokh and Lights](http://codeforces.com/problemset/problem/415/A)|Codeforces|1|\n|<ul><li>- [ ] Done</li></ul>|15|[Squats](http://codeforces.com/problemset/problem/424/A)|Codeforces|1|\n|<ul><li>- [ ] Done</li></ul>|16|[Toy Army](http://codeforces.com/problemset/problem/84/A)|Codeforces|1|\n|<ul><li>- [ ] Done</li></ul>|17|[Soroban](http://codeforces.com/problemset/problem/363/A)|Codeforces|1|\n|<ul><li>- [ ] Done</li></ul>|18|[Kyoya and Photobooks](http://codeforces.com/problemset/problem/554/A)|Codeforces|1|\n|<ul><li>- [ ] Done</li></ul>|19|[Rewards](http://codeforces.com/problemset/problem/448/A)|Codeforces|1|\n|<ul><li>- [ ] Done</li></ul>|20|[Colorful Stones (Simplified Edition)](http://codeforces.com/problemset/problem/265/A)|Codeforces|1|\n|<ul><li>- [ ] Done</li></ul>|21|[Buggy Sorting](http://codeforces.com/problemset/problem/246/A)|Codeforces|1|\n|<ul><li>- [ ] Done</li></ul>|22|[Greg's Workout](http://codeforces.com/problemset/problem/255/A)|Codeforces|1|\n|<ul><li>- [ ] Done</li></ul>|23|[Police Recruits](http://codeforces.com/problemset/problem/427/A)|Codeforces|1|\n|<ul><li>- [ ] Done</li></ul>|24|[Black Square](http://codeforces.com/problemset/problem/431/A)|Codeforces|1|\n|<ul><li>- [ ] Done</li></ul>|25|[Circle Line](http://codeforces.com/problemset/problem/278/A)|Codeforces|1|\n|<ul><li>- [ ] Done</li></ul>|26|[Playing with Dice](http://codeforces.com/problemset/problem/378/A)|Codeforces|1|\n|<ul><li>- [ ] Done</li></ul>|27|[Roma and Lucky Numbers](http://codeforces.com/problemset/problem/262/A)|Codeforces|1|\n|<ul><li>- [ ] Done</li></ul>|28|[Games](http://codeforces.com/problemset/problem/268/A)|Codeforces|1|\n|<ul><li>- [ ] Done</li></ul>|29|[Bear and Finding Criminals](http://codeforces.com/problemset/problem/680/B)|Codeforces|2|\n|<ul><li>- [ ] Done</li></ul>|30|[Nicholas and Permutation](http://codeforces.com/problemset/problem/676/A)|Codeforces|2|\n|<ul><li>- [ ] Done</li></ul>|31|[Uncowed Forces](http://codeforces.com/problemset/problem/604/A)|Codeforces|2|\n|<ul><li>- [ ] Done</li></ul>|32|[Choosing Laptop](http://codeforces.com/problemset/problem/106/B)|Codeforces|2|\n|<ul><li>- [ ] Done</li></ul>|33|[Ternary Logic](http://codeforces.com/problemset/problem/136/B)|Codeforces|2|\n|<ul><li>- [ ] Done</li></ul>|34|[Lever](http://codeforces.com/problemset/problem/376/A)|Codeforces|2|\n|<ul><li>- [ ] Done</li></ul>|35|[Wet Shark and Odd and Even](http://codeforces.com/problemset/problem/621/A)|Codeforces|2|\n|<ul><li>- [ ] Done</li></ul>|36|[A and B and Chess](http://codeforces.com/problemset/problem/519/A)|Codeforces|2|\n|<ul><li>- [ ] Done</li></ul>|37|[Arrays](http://codeforces.com/problemset/problem/572/A)|Codeforces|2|\n|<ul><li>- [ ] Done</li></ul>|38|[Saitama Destroys Hotel](http://codeforces.com/problemset/problem/608/A)|Codeforces|2|\n|<ul><li>- [ ] Done</li></ul>|39|[Shell Game](http://codeforces.com/problemset/problem/35/A)|Codeforces|2|\n|<ul><li>- [ ] Done</li></ul>|40|[George and Sleep](http://codeforces.com/problemset/problem/387/A)|Codeforces|2|\n|<ul><li>- [ ] Done</li></ul>|41|[Vanya and Table](http://codeforces.com/problemset/problem/552/A)|Codeforces|2|\n|<ul><li>- [ ] Done</li></ul>|42|[Drazil and Date](http://codeforces.com/problemset/problem/515/A)|Codeforces|2|\n|<ul><li>- [ ] Done</li></ul>|43|[Sinking Ship](http://codeforces.com/problemset/problem/63/A)|Codeforces|2|\n|<ul><li>- [ ] Done</li></ul>|44|[Initial Bet](http://codeforces.com/problemset/problem/478/A)|Codeforces|2|\n|<ul><li>- [ ] Done</li></ul>|45|[Tavas and Nafas](http://codeforces.com/problemset/problem/535/A)|Codeforces|2|\n|<ul><li>- [ ] Done</li></ul>|46|[Calculating Function](http://codeforces.com/problemset/problem/486/A)|Codeforces|2|\n|<ul><li>- [ ] Done</li></ul>|47|[Exams](http://codeforces.com/problemset/problem/194/A)|Codeforces|2|\n|<ul><li>- [ ] Done</li></ul>|48|[Postcards and photos](http://codeforces.com/problemset/problem/137/A)|Codeforces|2|\n|<ul><li>- [ ] Done</li></ul>|49|[Multiplication Table](http://codeforces.com/problemset/problem/577/A)|Codeforces|2|\n|<ul><li>- [ ] Done</li></ul>|50|[Palindromic Times](http://codeforces.com/problemset/problem/108/A)|Codeforces|2|\n|<ul><li>- [ ] Done</li></ul>|51|[Help Vasilisa the Wise 2](http://codeforces.com/problemset/problem/143/A)|Codeforces|2|\n|<ul><li>- [ ] Done</li></ul>|52|[Currency System in Geraldion](http://codeforces.com/problemset/problem/560/A)|Codeforces|2|\n|<ul><li>- [ ] Done</li></ul>|53|[Game Outcome](http://codeforces.com/problemset/problem/157/A)|Codeforces|2|\n|<ul><li>- [ ] Done</li></ul>|54|[Group of Students](http://codeforces.com/problemset/problem/357/A)|Codeforces|2|\n|<ul><li>- [ ] Done</li></ul>|55|[Interview](http://codeforces.com/problemset/problem/631/A)|Codeforces|2|\n|<ul><li>- [ ] Done</li></ul>|56|[Petya and Countryside](http://codeforces.com/problemset/problem/66/B)|Codeforces|2|\n|<ul><li>- [ ] Done</li></ul>|57|[Case of the Zeros and Ones](http://codeforces.com/problemset/problem/556/A)|Codeforces|2|\n|<ul><li>- [ ] Done</li></ul>|58|[Worms Evolution](http://codeforces.com/problemset/problem/31/A)|Codeforces|2|\n|<ul><li>- [ ] Done</li></ul>|59|[Ciel and Dancing](http://codeforces.com/problemset/problem/322/A)|Codeforces|2|\n|<ul><li>- [ ] Done</li></ul>|60|[Table](http://codeforces.com/problemset/problem/359/A)|Codeforces|2|\n|<ul><li>- [ ] Done</li></ul>|61|[Sereja and Coat Rack](http://codeforces.com/problemset/problem/368/A)|Codeforces|2|\n|<ul><li>- [ ] Done</li></ul>|62|[Toy Cars](http://codeforces.com/problemset/problem/545/A)|Codeforces|2|\n|<ul><li>- [ ] Done</li></ul>|63|[Joysticks](http://codeforces.com/problemset/problem/651/A)|Codeforces|2|\n|<ul><li>- [ ] Done</li></ul>|64|[Lucky Substring](http://codeforces.com/problemset/problem/122/B)|Codeforces|2|\n|<ul><li>- [ ] Done</li></ul>|65|[Lucky Ticket](http://codeforces.com/problemset/problem/146/A)|Codeforces|2|\n|<ul><li>- [ ] Done</li></ul>|66|[Kefa and First Steps](http://codeforces.com/problemset/problem/580/A)|Codeforces|2|\n|<ul><li>- [ ] Done</li></ul>|67|[Squares](http://codeforces.com/problemset/problem/263/B)|Codeforces|2|\n|<ul><li>- [ ] Done</li></ul>|68|[Valera and Plates](http://codeforces.com/problemset/problem/369/A)|Codeforces|2|\n|<ul><li>- [ ] Done</li></ul>|69|[Trace](http://codeforces.com/problemset/problem/157/B)|Codeforces|2|\n|<ul><li>- [ ] Done</li></ul>|70|[Pasha and Stick](http://codeforces.com/problemset/problem/610/A)|Codeforces|2|\n|<ul><li>- [ ] Done</li></ul>|71|[Queue on Bus Stop](http://codeforces.com/problemset/problem/435/A)|Codeforces|2|\n|<ul><li>- [ ] Done</li></ul>|72|[Lucky String](http://codeforces.com/problemset/problem/110/B)|Codeforces|2|\n|<ul><li>- [ ] Done</li></ul>|73|[Amr and Music](http://codeforces.com/problemset/problem/507/A)|Codeforces|2|\n|<ul><li>- [ ] Done</li></ul>|74|[Eugeny and Array](http://codeforces.com/problemset/problem/302/A)|Codeforces|2|\n|<ul><li>- [ ] Done</li></ul>|75|[Prison Transfer](http://codeforces.com/problemset/problem/427/B)|Codeforces|2|\n|<ul><li>- [ ] Done</li></ul>|76|[Bear and Raspberry](http://codeforces.com/problemset/problem/385/A)|Codeforces|2|\n|<ul><li>- [ ] Done</li></ul>|77|[Buttons](http://codeforces.com/problemset/problem/268/B)|Codeforces|2|\n|<ul><li>- [ ] Done</li></ul>|78|[Vasya and Digital Root](http://codeforces.com/problemset/problem/355/A)|Codeforces|2|\n|<ul><li>- [ ] Done</li></ul>|79|[Little Elephant and Magic Square](http://codeforces.com/problemset/problem/259/B)|Codeforces|2|\n|<ul><li>- [ ] Done</li></ul>|80|[Valera and X](http://codeforces.com/problemset/problem/404/A)|Codeforces|2|\n|<ul><li>- [ ] Done</li></ul>|81|[Game With Sticks](http://codeforces.com/problemset/problem/451/A)|Codeforces|2|\n|<ul><li>- [ ] Done</li></ul>|82|[Devu, the Singer and Churu, the Joker](http://codeforces.com/problemset/problem/439/A)|Codeforces|2|\n|<ul><li>- [ ] Done</li></ul>|83|[Roadside Trees (Simplified Edition)](http://codeforces.com/problemset/problem/265/B)|Codeforces|2|\n|<ul><li>- [ ] Done</li></ul>|84|[Valera and Antique Items](http://codeforces.com/problemset/problem/441/A)|Codeforces|2|\n|<ul><li>- [ ] Done</li></ul>|85|[Lecture](http://codeforces.com/problemset/problem/499/B)|Codeforces|2|\n|<ul><li>- [ ] Done</li></ul>|86|[Domino Effect](http://codeforces.com/problemset/problem/405/B)|Codeforces|3|\n|<ul><li>- [ ] Done</li></ul>|87|[Sereja and Stairs](http://codeforces.com/problemset/problem/381/B)|Codeforces|3|\n|<ul><li>- [ ] Done</li></ul>|88|[Eugeny and Play List](http://codeforces.com/problemset/problem/302/B)|Codeforces|3|\n|<ul><li>- [ ] Done</li></ul>|89|[K-special Tables](http://codeforces.com/problemset/problem/625/C)|Codeforces|3|\n|<ul><li>- [ ] Done</li></ul>|90|[Filya and Homework](http://codeforces.com/problemset/problem/714/B)|Codeforces|3|\n|<ul><li>- [ ] Done</li></ul>|91|[Walking in the Rain](http://codeforces.com/problemset/problem/192/B)|Codeforces|3|\n|<ul><li>- [ ] Done</li></ul>|92|[Rebranding](http://codeforces.com/problemset/problem/591/B)|Codeforces|3|\n|<ul><li>- [ ] Done</li></ul>|93|[Polo the Penguin and Strings](http://codeforces.com/problemset/problem/288/A)|Codeforces|3|\n|<ul><li>- [ ] Done</li></ul>|94|[Bear and Elections](http://codeforces.com/problemset/problem/574/A)|Codeforces|3|\n|<ul><li>- [ ] Done</li></ul>|95|[Ohana Cleans Up](http://codeforces.com/problemset/problem/554/B)|Codeforces|3|\n|<ul><li>- [ ] Done</li></ul>|96|[Little Elephant and Numbers](http://codeforces.com/problemset/problem/221/B)|Codeforces|3|\n|<ul><li>- [ ] Done</li></ul>|97|[Tiling with Hexagons](http://codeforces.com/problemset/problem/216/A)|Codeforces|3|\n|<ul><li>- [ ] Done</li></ul>|98|[Rook, Bishop and King](http://codeforces.com/problemset/problem/370/A)|Codeforces|3|\n|<ul><li>- [ ] Done</li></ul>|99|[Snow Footprints](http://codeforces.com/problemset/problem/298/A)|Codeforces|3|\n|<ul><li>- [ ] Done</li></ul>|100|[Alyona and Mex](http://codeforces.com/problemset/problem/682/B)|Codeforces|3|\n|<ul><li>- [ ] Done</li></ul>|101|[After Training](http://codeforces.com/problemset/problem/195/B)|Codeforces|3|\n|<ul><li>- [ ] Done</li></ul>|102|[Robot's Task](http://codeforces.com/problemset/problem/583/B)|Codeforces|3|\n|<ul><li>- [ ] Done</li></ul>|103|[Wilbur and Swimming Pool](http://codeforces.com/problemset/problem/596/A)|Codeforces|3|\n|<ul><li>- [ ] Done</li></ul>|104|[Permutation](http://codeforces.com/problemset/problem/359/B)|Codeforces|3|\n|<ul><li>- [ ] Done</li></ul>|105|[War of the Corporations](http://codeforces.com/problemset/problem/625/B)|Codeforces|3|\n|<ul><li>- [ ] Done</li></ul>|106|[Canvas Frames](http://codeforces.com/problemset/problem/127/B)|Codeforces|3|\n|<ul><li>- [ ] Done</li></ul>|107|[Alyona and Numbers](http://codeforces.com/problemset/problem/682/A)|Codeforces|3|\n|<ul><li>- [ ] Done</li></ul>|108|[Vika and Squares](http://codeforces.com/problemset/problem/610/B)|Codeforces|3|\n|<ul><li>- [ ] Done</li></ul>|109|[Vasya and Football](http://codeforces.com/problemset/problem/493/A)|Codeforces|3|\n|<ul><li>- [ ] Done</li></ul>|110|[Whose sentence is it?](http://codeforces.com/problemset/problem/312/A)|Codeforces|3|\n|<ul><li>- [ ] Done</li></ul>|111|[Vanya and Books](http://codeforces.com/problemset/problem/552/B)|Codeforces|3|\n|<ul><li>- [ ] Done</li></ul>|112|[Sockets](http://codeforces.com/problemset/problem/257/A)|Codeforces|3|\n|<ul><li>- [ ] Done</li></ul>|113|[The Wall](http://codeforces.com/problemset/problem/340/A)|Codeforces|3|\n|<ul><li>- [ ] Done</li></ul>|114|[Digital Counter](http://codeforces.com/problemset/problem/495/A)|Codeforces|3|\n|<ul><li>- [ ] Done</li></ul>|115|[Bear and Strings](http://codeforces.com/problemset/problem/385/B)|Codeforces|3|\n|<ul><li>- [ ] Done</li></ul>|116|[Bear and Poker](http://codeforces.com/problemset/problem/573/A)|Codeforces|3|\n|<ul><li>- [ ] Done</li></ul>|117|[Ksenia and Pan Scales](http://codeforces.com/problemset/problem/382/A)|Codeforces|3|\n|<ul><li>- [ ] Done</li></ul>|118|[Phone Numbers](http://codeforces.com/problemset/problem/151/B)|Codeforces|3|\n|<ul><li>- [ ] Done</li></ul>|119|[Inventory](http://codeforces.com/problemset/problem/569/B)|Codeforces|3|\n|<ul><li>- [ ] Done</li></ul>|120|[Vitaliy and Pie](http://codeforces.com/problemset/problem/525/A)|Codeforces|3|\n|<ul><li>- [ ] Done</li></ul>|121|[Students and Shoelaces](http://codeforces.com/problemset/problem/129/B)|Codeforces|3|\n|<ul><li>- [ ] Done</li></ul>|122|[Wilbur and Array](http://codeforces.com/problemset/problem/596/B)|Codeforces|3|\n|<ul><li>- [ ] Done</li></ul>|123|[Strings of Power](http://codeforces.com/problemset/problem/318/B)|Codeforces|3|\n|<ul><li>- [ ] Done</li></ul>|124|[Misha and Changing Handles](http://codeforces.com/problemset/problem/501/B)|Codeforces|3|\n|<ul><li>- [ ] Done</li></ul>|125|[Levko and Permutation](http://codeforces.com/problemset/problem/361/B)|Codeforces|3|\n|<ul><li>- [ ] Done</li></ul>|126|[Bar](http://codeforces.com/problemset/problem/56/A)|Codeforces|3|\n|<ul><li>- [ ] Done</li></ul>|127|[Beautiful Paintings](http://codeforces.com/problemset/problem/651/B)|Codeforces|3|\n|<ul><li>- [ ] Done</li></ul>|128|[Combination](http://codeforces.com/problemset/problem/155/B)|Codeforces|3|\n|<ul><li>- [ ] Done</li></ul>|129|[MUH and Sticks](http://codeforces.com/problemset/problem/471/A)|Codeforces|3|\n|<ul><li>- [ ] Done</li></ul>|130|[Print Check](http://codeforces.com/problemset/problem/631/B)|Codeforces|3|\n|<ul><li>- [ ] Done</li></ul>|131|[Art Union](http://codeforces.com/problemset/problem/416/B)|Codeforces|3|\n|<ul><li>- [ ] Done</li></ul>|132|[Lala Land and Apple Trees](http://codeforces.com/problemset/problem/558/A)|Codeforces|3|\n|<ul><li>- [ ] Done</li></ul>|133|[Lucky Conversion](http://codeforces.com/problemset/problem/145/A)|Codeforces|3|\n|<ul><li>- [ ] Done</li></ul>|134|[Two Bases](http://codeforces.com/problemset/problem/602/A)|Codeforces|3|\n|<ul><li>- [ ] Done</li></ul>|135|[The Monster and the Squirrel](http://codeforces.com/problemset/problem/592/B)|Codeforces|3|\n|<ul><li>- [ ] Done</li></ul>|136|[The Child and Homework](http://codeforces.com/problemset/problem/437/A)|Codeforces|3|\n|<ul><li>- [ ] Done</li></ul>|137|[Tavas and SaDDas](http://codeforces.com/problemset/problem/535/B)|Codeforces|3|\n|<ul><li>- [ ] Done</li></ul>|138|[Dima and To-do List](http://codeforces.com/problemset/problem/366/B)|Codeforces|3|\n|<ul><li>- [ ] Done</li></ul>|139|[Valuable Resources](http://codeforces.com/problemset/problem/485/B)|Codeforces|3|\n|<ul><li>- [ ] Done</li></ul>|140|[Fox and Number Game](http://codeforces.com/problemset/problem/389/A)|Codeforces|3|\n|<ul><li>- [ ] Done</li></ul>|141|[Unary](http://codeforces.com/problemset/problem/133/B)|Codeforces|3|\n|<ul><li>- [ ] Done</li></ul>|142|[Equidistant String](http://codeforces.com/problemset/problem/545/B)|Codeforces|3|\n|<ul><li>- [ ] Done</li></ul>|143|[Garland](http://codeforces.com/problemset/problem/408/B)|Codeforces|3|\n|<ul><li>- [ ] Done</li></ul>|144|[Coins](http://codeforces.com/problemset/problem/58/B)|Codeforces|3|\n|<ul><li>- [ ] Done</li></ul>|145|[Chewba?ca and Number](http://codeforces.com/problemset/problem/514/A)|Codeforces|3|\n|<ul><li>- [ ] Done</li></ul>|146|[Chat Online](http://codeforces.com/problemset/problem/469/B)|Codeforces|3|\n|<ul><li>- [ ] Done</li></ul>|147|[Elections](http://codeforces.com/problemset/problem/570/A)|Codeforces|3|\n|<ul><li>- [ ] Done</li></ul>|148|[George and Round](http://codeforces.com/problemset/problem/387/B)|Codeforces|3|\n|<ul><li>- [ ] Done</li></ul>|149|[Appleman and Toastman](http://codeforces.com/problemset/problem/461/A)|Codeforces|3|\n|<ul><li>- [ ] Done</li></ul>|150|[Petya and Staircases](http://codeforces.com/problemset/problem/362/B)|Codeforces|3|\n|<ul><li>- [ ] Done</li></ul>|151|[Good Number](http://codeforces.com/problemset/problem/365/A)|Codeforces|3|\n|<ul><li>- [ ] Done</li></ul>|152|[A and B and Compilation Errors](http://codeforces.com/problemset/problem/519/B)|Codeforces|3|\n|<ul><li>- [ ] Done</li></ul>|153|[Simple Game](http://codeforces.com/problemset/problem/570/B)|Codeforces|3|\n|<ul><li>- [ ] Done</li></ul>|154|[Fedor and New Game](http://codeforces.com/problemset/problem/467/B)|Codeforces|3|\n|<ul><li>- [ ] Done</li></ul>|155|[Drazil and Factorial](http://codeforces.com/problemset/problem/515/C)|Codeforces|3|\n|<ul><li>- [ ] Done</li></ul>|156|[Cifera](http://codeforces.com/problemset/problem/114/A)|Codeforces|3|\n|<ul><li>- [ ] Done</li></ul>|157|[A and B and Team Training](http://codeforces.com/problemset/problem/519/C)|Codeforces|3|\n|<ul><li>- [ ] Done</li></ul>|158|[Football Kit](http://codeforces.com/problemset/problem/432/B)|Codeforces|3|\n|<ul><li>- [ ] Done</li></ul>|159|[Devu, the Dumb Guy](http://codeforces.com/problemset/problem/439/B)|Codeforces|3|\n|<ul><li>- [ ] Done</li></ul>|160|[Anton and currency you all know](http://codeforces.com/problemset/problem/508/B)|Codeforces|3|\n|<ul><li>- [ ] Done</li></ul>|161|[Random Teams](http://codeforces.com/problemset/problem/478/B)|Codeforces|3|\n|<ul><li>- [ ] Done</li></ul>|162|[Bear and Three Musketeers](http://codeforces.com/problemset/problem/574/B)|Codeforces|4|\n|<ul><li>- [ ] Done</li></ul>|163|[Chris and Magic Square](http://codeforces.com/problemset/problem/711/B)|Codeforces|4|\n|<ul><li>- [ ] Done</li></ul>|164|[Restoring Painting](http://codeforces.com/problemset/problem/675/B)|Codeforces|4|\n|<ul><li>- [ ] Done</li></ul>|165|[Point on Spiral](http://codeforces.com/problemset/problem/279/A)|Codeforces|4|\n|<ul><li>- [ ] Done</li></ul>|166|[Vasya and the Bus](http://codeforces.com/problemset/problem/190/A)|Codeforces|4|\n|<ul><li>- [ ] Done</li></ul>|167|[Guest From the Past](http://codeforces.com/problemset/problem/625/A)|Codeforces|4|\n|<ul><li>- [ ] Done</li></ul>|168|[Photographer](http://codeforces.com/problemset/problem/203/C)|Codeforces|4|\n|<ul><li>- [ ] Done</li></ul>|169|[Taxes](http://codeforces.com/problemset/problem/735/D)|Codeforces|4|\n|<ul><li>- [ ] Done</li></ul>|170|[Dima and Lisa](http://codeforces.com/problemset/problem/584/D)|Codeforces|4|\n|<ul><li>- [ ] Done</li></ul>|171|[Cows and Primitive Roots](http://codeforces.com/problemset/problem/284/A)|Codeforces|4|\n|<ul><li>- [ ] Done</li></ul>|172|[MUH and Important Things](http://codeforces.com/problemset/problem/471/B)|Codeforces|4|\n|<ul><li>- [ ] Done</li></ul>|173|[Pyramid of Glasses](http://codeforces.com/problemset/problem/676/B)|Codeforces|4|\n|<ul><li>- [ ] Done</li></ul>|174|[Approximating a Constant Range](http://codeforces.com/problemset/problem/602/B)|Codeforces|4|\n|<ul><li>- [ ] Done</li></ul>|175|[PawnChess](http://codeforces.com/problemset/problem/592/A)|Codeforces|4|\n|<ul><li>- [ ] Done</li></ul>|176|[Non-square Equation](http://codeforces.com/problemset/problem/233/B)|Codeforces|4|\n|<ul><li>- [ ] Done</li></ul>|177|[Vasya and String](http://codeforces.com/problemset/problem/676/C)|Codeforces|4|\n|<ul><li>- [ ] Done</li></ul>|178|[DZY Loves Chemistry](http://codeforces.com/problemset/problem/445/B)|Codeforces|4|\n|<ul><li>- [ ] Done</li></ul>|179|[Valera and Contest](http://codeforces.com/problemset/problem/369/B)|Codeforces|4|\n|<ul><li>- [ ] Done</li></ul>|180|[Guess a number!](http://codeforces.com/problemset/problem/416/A)|Codeforces|4|\n|<ul><li>- [ ] Done</li></ul>|181|[Burning Midnight Oil](http://codeforces.com/problemset/problem/165/B)|Codeforces|4|\n|<ul><li>- [ ] Done</li></ul>|182|[Pythagorean Triples](http://codeforces.com/problemset/problem/707/C)|Codeforces|4|\n|<ul><li>- [ ] Done</li></ul>|183|[Replacement](http://codeforces.com/problemset/problem/570/C)|Codeforces|4|\n|<ul><li>- [ ] Done</li></ul>|184|[Woodcutters](http://codeforces.com/problemset/problem/545/C)|Codeforces|4|\n|<ul><li>- [ ] Done</li></ul>|185|[Amr and The Large Array](http://codeforces.com/problemset/problem/558/B)|Codeforces|4|\n|<ul><li>- [ ] Done</li></ul>|186|[The Child and Set](http://codeforces.com/problemset/problem/437/B)|Codeforces|4|\n|<ul><li>- [ ] Done</li></ul>|187|[More Cowbell](http://codeforces.com/problemset/problem/604/B)|Codeforces|4|\n|<ul><li>- [ ] Done</li></ul>|188|[Economy Game](http://codeforces.com/problemset/problem/681/B)|Codeforces|4|\n|<ul><li>- [ ] Done</li></ul>|189|[Soldier and Cards](http://codeforces.com/problemset/problem/546/C)|Codeforces|4|\n|<ul><li>- [ ] Done</li></ul>|190|[Pasha Maximizes](http://codeforces.com/problemset/problem/435/B)|Codeforces|4|\n|<ul><li>- [ ] Done</li></ul>|191|[Vasya and Wrestling](http://codeforces.com/problemset/problem/493/B)|Codeforces|4|\n|<ul><li>- [ ] Done</li></ul>|192|[OR in Matrix](http://codeforces.com/problemset/problem/486/B)|Codeforces|4|\n|<ul><li>- [ ] Done</li></ul>|193|[Kefa and Company](http://codeforces.com/problemset/problem/580/B)|Codeforces|4|\n|<ul><li>- [ ] Done</li></ul>|194|[Soldier and Badges](http://codeforces.com/problemset/problem/546/B)|Codeforces|4|\n|<ul><li>- [ ] Done</li></ul>|195|[Han Solo and Lazer Gun](http://codeforces.com/problemset/problem/514/B)|Codeforces|4|\n|<ul><li>- [ ] Done</li></ul>|196|[Kefa and Park](http://codeforces.com/problemset/problem/580/C)|Codeforces|4|\n|<ul><li>- [ ] Done</li></ul>|197|[Amr and Pins](http://codeforces.com/problemset/problem/507/B)|Codeforces|4|\n|<ul><li>- [ ] Done</li></ul>|198|[Two Substrings](http://codeforces.com/problemset/problem/550/A)|Codeforces|4|\n|<ul><li>- [ ] Done</li></ul>|199|[Queue](http://codeforces.com/problemset/problem/545/D)|Codeforces|4|\n|<ul><li>- [ ] Done</li></ul>|200|[Modulo Sum](http://codeforces.com/problemset/problem/577/B)|Codeforces|5|\n"
  },
  {
    "path": "ladders/23. 1300 <= Codeforces Rating <= 1399 (Extra)/README.md",
    "content": "# Ladder Name: 23 - 1300 <= Codeforces Rating <= 1399 (Extra)\n## Description\n Extra problems for users satisfying this condition\n## Difficulty Level: 3\n\n| Checkbox | ID  | Problem Name | Online Judge | Difficulty |\n|---|:---:|:---:|---|---|\n|<ul><li>- [ ] Done</li></ul>|1|[Bulbs](http://codeforces.com/problemset/problem/615/A)|Codeforces|1|\n|<ul><li>- [ ] Done</li></ul>|2|[Wasted Time](http://codeforces.com/problemset/problem/127/A)|Codeforces|1|\n|<ul><li>- [ ] Done</li></ul>|3|[Line to Cashier](http://codeforces.com/problemset/problem/408/A)|Codeforces|1|\n|<ul><li>- [ ] Done</li></ul>|4|[Shaass and Oskols](http://codeforces.com/problemset/problem/294/A)|Codeforces|1|\n|<ul><li>- [ ] Done</li></ul>|5|[Soroban](http://codeforces.com/problemset/problem/363/A)|Codeforces|1|\n|<ul><li>- [ ] Done</li></ul>|6|[Soldier and Bananas](http://codeforces.com/problemset/problem/546/A)|Codeforces|1|\n|<ul><li>- [ ] Done</li></ul>|7|[Mashmokh and Lights](http://codeforces.com/problemset/problem/415/A)|Codeforces|1|\n|<ul><li>- [ ] Done</li></ul>|8|[Police Recruits](http://codeforces.com/problemset/problem/427/A)|Codeforces|1|\n|<ul><li>- [ ] Done</li></ul>|9|[Playing with Dice](http://codeforces.com/problemset/problem/378/A)|Codeforces|1|\n|<ul><li>- [ ] Done</li></ul>|10|[George and Accommodation](http://codeforces.com/problemset/problem/467/A)|Codeforces|1|\n|<ul><li>- [ ] Done</li></ul>|11|[Rewards](http://codeforces.com/problemset/problem/448/A)|Codeforces|1|\n|<ul><li>- [ ] Done</li></ul>|12|[Toy Army](http://codeforces.com/problemset/problem/84/A)|Codeforces|1|\n|<ul><li>- [ ] Done</li></ul>|13|[Buggy Sorting](http://codeforces.com/problemset/problem/246/A)|Codeforces|1|\n|<ul><li>- [ ] Done</li></ul>|14|[Combination Lock](http://codeforces.com/problemset/problem/540/A)|Codeforces|1|\n|<ul><li>- [ ] Done</li></ul>|15|[Circle Line](http://codeforces.com/problemset/problem/278/A)|Codeforces|1|\n|<ul><li>- [ ] Done</li></ul>|16|[Squats](http://codeforces.com/problemset/problem/424/A)|Codeforces|1|\n|<ul><li>- [ ] Done</li></ul>|17|[Roma and Lucky Numbers](http://codeforces.com/problemset/problem/262/A)|Codeforces|1|\n|<ul><li>- [ ] Done</li></ul>|18|[LLPS](http://codeforces.com/problemset/problem/202/A)|Codeforces|1|\n|<ul><li>- [ ] Done</li></ul>|19|[Black Square](http://codeforces.com/problemset/problem/431/A)|Codeforces|1|\n|<ul><li>- [ ] Done</li></ul>|20|[GukiZ and Contest](http://codeforces.com/problemset/problem/551/A)|Codeforces|1|\n|<ul><li>- [ ] Done</li></ul>|21|[Games](http://codeforces.com/problemset/problem/268/A)|Codeforces|1|\n|<ul><li>- [ ] Done</li></ul>|22|[Greg's Workout](http://codeforces.com/problemset/problem/255/A)|Codeforces|1|\n|<ul><li>- [ ] Done</li></ul>|23|[Colorful Stones (Simplified Edition)](http://codeforces.com/problemset/problem/265/A)|Codeforces|1|\n|<ul><li>- [ ] Done</li></ul>|24|[Ilya and Diplomas](http://codeforces.com/problemset/problem/557/A)|Codeforces|2|\n|<ul><li>- [ ] Done</li></ul>|25|[Tavas and Nafas](http://codeforces.com/problemset/problem/535/A)|Codeforces|2|\n|<ul><li>- [ ] Done</li></ul>|26|[Exams](http://codeforces.com/problemset/problem/194/A)|Codeforces|2|\n|<ul><li>- [ ] Done</li></ul>|27|[Lucky String](http://codeforces.com/problemset/problem/110/B)|Codeforces|2|\n|<ul><li>- [ ] Done</li></ul>|28|[Vasya and Public Transport](http://codeforces.com/problemset/problem/355/B)|Codeforces|2|\n|<ul><li>- [ ] Done</li></ul>|29|[Queue on Bus Stop](http://codeforces.com/problemset/problem/435/A)|Codeforces|2|\n|<ul><li>- [ ] Done</li></ul>|30|[Kefa and First Steps](http://codeforces.com/problemset/problem/580/A)|Codeforces|2|\n|<ul><li>- [ ] Done</li></ul>|31|[Wet Shark and Odd and Even](http://codeforces.com/problemset/problem/621/A)|Codeforces|2|\n|<ul><li>- [ ] Done</li></ul>|32|[Saitama Destroys Hotel](http://codeforces.com/problemset/problem/608/A)|Codeforces|2|\n|<ul><li>- [ ] Done</li></ul>|33|[Game Outcome](http://codeforces.com/problemset/problem/157/A)|Codeforces|2|\n|<ul><li>- [ ] Done</li></ul>|34|[Polo the Penguin and Segments ](http://codeforces.com/problemset/problem/289/A)|Codeforces|2|\n|<ul><li>- [ ] Done</li></ul>|35|[Valera and X](http://codeforces.com/problemset/problem/404/A)|Codeforces|2|\n|<ul><li>- [ ] Done</li></ul>|36|[Multiplication Table](http://codeforces.com/problemset/problem/577/A)|Codeforces|2|\n|<ul><li>- [ ] Done</li></ul>|37|[Sinking Ship](http://codeforces.com/problemset/problem/63/A)|Codeforces|2|\n|<ul><li>- [ ] Done</li></ul>|38|[Eugeny and Array](http://codeforces.com/problemset/problem/302/A)|Codeforces|2|\n|<ul><li>- [ ] Done</li></ul>|39|[Little Frog](http://codeforces.com/problemset/problem/53/C)|Codeforces|2|\n|<ul><li>- [ ] Done</li></ul>|40|[Olesya and Rodion](http://codeforces.com/problemset/problem/584/A)|Codeforces|2|\n|<ul><li>- [ ] Done</li></ul>|41|[Cows and Poker Game](http://codeforces.com/problemset/problem/284/B)|Codeforces|2|\n|<ul><li>- [ ] Done</li></ul>|42|[George and Sleep](http://codeforces.com/problemset/problem/387/A)|Codeforces|2|\n|<ul><li>- [ ] Done</li></ul>|43|[Case of the Zeros and Ones](http://codeforces.com/problemset/problem/556/A)|Codeforces|2|\n|<ul><li>- [ ] Done</li></ul>|44|[Vanya and Table](http://codeforces.com/problemset/problem/552/A)|Codeforces|2|\n|<ul><li>- [ ] Done</li></ul>|45|[Lucky Ticket](http://codeforces.com/problemset/problem/146/A)|Codeforces|2|\n|<ul><li>- [ ] Done</li></ul>|46|[Sereja and Coat Rack](http://codeforces.com/problemset/problem/368/A)|Codeforces|2|\n|<ul><li>- [ ] Done</li></ul>|47|[Lucky Substring](http://codeforces.com/problemset/problem/122/B)|Codeforces|2|\n|<ul><li>- [ ] Done</li></ul>|48|[Group of Students](http://codeforces.com/problemset/problem/357/A)|Codeforces|2|\n|<ul><li>- [ ] Done</li></ul>|49|[Ciel and Dancing](http://codeforces.com/problemset/problem/322/A)|Codeforces|2|\n|<ul><li>- [ ] Done</li></ul>|50|[Vasya and Digital Root](http://codeforces.com/problemset/problem/355/A)|Codeforces|2|\n|<ul><li>- [ ] Done</li></ul>|51|[Inna and Choose Options](http://codeforces.com/problemset/problem/400/A)|Codeforces|2|\n|<ul><li>- [ ] Done</li></ul>|52|[Lever](http://codeforces.com/problemset/problem/376/A)|Codeforces|2|\n|<ul><li>- [ ] Done</li></ul>|53|[Calculating Function](http://codeforces.com/problemset/problem/486/A)|Codeforces|2|\n|<ul><li>- [ ] Done</li></ul>|54|[Bear and Raspberry](http://codeforces.com/problemset/problem/385/A)|Codeforces|2|\n|<ul><li>- [ ] Done</li></ul>|55|[Amr and Music](http://codeforces.com/problemset/problem/507/A)|Codeforces|2|\n|<ul><li>- [ ] Done</li></ul>|56|[Currency System in Geraldion](http://codeforces.com/problemset/problem/560/A)|Codeforces|2|\n|<ul><li>- [ ] Done</li></ul>|57|[Toy Cars](http://codeforces.com/problemset/problem/545/A)|Codeforces|2|\n|<ul><li>- [ ] Done</li></ul>|58|[Lecture](http://codeforces.com/problemset/problem/499/B)|Codeforces|2|\n|<ul><li>- [ ] Done</li></ul>|59|[Little Elephant and Magic Square](http://codeforces.com/problemset/problem/259/B)|Codeforces|2|\n|<ul><li>- [ ] Done</li></ul>|60|[Arrays](http://codeforces.com/problemset/problem/572/A)|Codeforces|2|\n|<ul><li>- [ ] Done</li></ul>|61|[Initial Bet](http://codeforces.com/problemset/problem/478/A)|Codeforces|2|\n|<ul><li>- [ ] Done</li></ul>|62|[Trace](http://codeforces.com/problemset/problem/157/B)|Codeforces|2|\n|<ul><li>- [ ] Done</li></ul>|63|[Valera and Antique Items](http://codeforces.com/problemset/problem/441/A)|Codeforces|2|\n|<ul><li>- [ ] Done</li></ul>|64|[Buttons](http://codeforces.com/problemset/problem/268/B)|Codeforces|2|\n|<ul><li>- [ ] Done</li></ul>|65|[Game With Sticks](http://codeforces.com/problemset/problem/451/A)|Codeforces|2|\n|<ul><li>- [ ] Done</li></ul>|66|[Devu, the Singer and Churu, the Joker](http://codeforces.com/problemset/problem/439/A)|Codeforces|2|\n|<ul><li>- [ ] Done</li></ul>|67|[A and B and Chess](http://codeforces.com/problemset/problem/519/A)|Codeforces|2|\n|<ul><li>- [ ] Done</li></ul>|68|[Squares](http://codeforces.com/problemset/problem/263/B)|Codeforces|2|\n|<ul><li>- [ ] Done</li></ul>|69|[Prison Transfer](http://codeforces.com/problemset/problem/427/B)|Codeforces|2|\n|<ul><li>- [ ] Done</li></ul>|70|[Valera and Plates](http://codeforces.com/problemset/problem/369/A)|Codeforces|2|\n|<ul><li>- [ ] Done</li></ul>|71|[Roadside Trees (Simplified Edition)](http://codeforces.com/problemset/problem/265/B)|Codeforces|2|\n|<ul><li>- [ ] Done</li></ul>|72|[Simple Game](http://codeforces.com/problemset/problem/570/B)|Codeforces|3|\n|<ul><li>- [ ] Done</li></ul>|73|[Elections](http://codeforces.com/problemset/problem/570/A)|Codeforces|3|\n|<ul><li>- [ ] Done</li></ul>|74|[Magical Array](http://codeforces.com/problemset/problem/83/A)|Codeforces|3|\n|<ul><li>- [ ] Done</li></ul>|75|[Combination](http://codeforces.com/problemset/problem/155/B)|Codeforces|3|\n|<ul><li>- [ ] Done</li></ul>|76|[Magic Spheres](http://codeforces.com/problemset/problem/606/A)|Codeforces|3|\n|<ul><li>- [ ] Done</li></ul>|77|[Whose sentence is it?](http://codeforces.com/problemset/problem/312/A)|Codeforces|3|\n|<ul><li>- [ ] Done</li></ul>|78|[Devu, the Dumb Guy](http://codeforces.com/problemset/problem/439/B)|Codeforces|3|\n|<ul><li>- [ ] Done</li></ul>|79|[Sockets](http://codeforces.com/problemset/problem/257/A)|Codeforces|3|\n|<ul><li>- [ ] Done</li></ul>|80|[Vasya and Petya's Game](http://codeforces.com/problemset/problem/576/A)|Codeforces|3|\n|<ul><li>- [ ] Done</li></ul>|81|[Art Union](http://codeforces.com/problemset/problem/416/B)|Codeforces|3|\n|<ul><li>- [ ] Done</li></ul>|82|[Coins](http://codeforces.com/problemset/problem/58/B)|Codeforces|3|\n|<ul><li>- [ ] Done</li></ul>|83|[K-special Tables](http://codeforces.com/problemset/problem/625/C)|Codeforces|3|\n|<ul><li>- [ ] Done</li></ul>|84|[Wet Shark and Bishops](http://codeforces.com/problemset/problem/621/B)|Codeforces|3|\n|<ul><li>- [ ] Done</li></ul>|85|[Chewba?ca and Number](http://codeforces.com/problemset/problem/514/A)|Codeforces|3|\n|<ul><li>- [ ] Done</li></ul>|86|[Binary Number](http://codeforces.com/problemset/problem/92/B)|Codeforces|3|\n|<ul><li>- [ ] Done</li></ul>|87|[Snow Footprints](http://codeforces.com/problemset/problem/298/A)|Codeforces|3|\n|<ul><li>- [ ] Done</li></ul>|88|[Levko and Permutation](http://codeforces.com/problemset/problem/361/B)|Codeforces|3|\n|<ul><li>- [ ] Done</li></ul>|89|[Watchmen](http://codeforces.com/problemset/problem/650/A)|Codeforces|3|\n|<ul><li>- [ ] Done</li></ul>|90|[Vitaliy and Pie](http://codeforces.com/problemset/problem/525/A)|Codeforces|3|\n|<ul><li>- [ ] Done</li></ul>|91|[Prizes, Prizes, more Prizes](http://codeforces.com/problemset/problem/208/D)|Codeforces|3|\n|<ul><li>- [ ] Done</li></ul>|92|[Email address](http://codeforces.com/problemset/problem/41/C)|Codeforces|3|\n|<ul><li>- [ ] Done</li></ul>|93|[Permutation](http://codeforces.com/problemset/problem/359/B)|Codeforces|3|\n|<ul><li>- [ ] Done</li></ul>|94|[Petya and Java](http://codeforces.com/problemset/problem/66/A)|Codeforces|3|\n|<ul><li>- [ ] Done</li></ul>|95|[Far Relative’s Problem](http://codeforces.com/problemset/problem/629/B)|Codeforces|3|\n|<ul><li>- [ ] Done</li></ul>|96|[Polo the Penguin and Strings](http://codeforces.com/problemset/problem/288/A)|Codeforces|3|\n|<ul><li>- [ ] Done</li></ul>|97|[Sorting Railway Cars](http://codeforces.com/problemset/problem/605/A)|Codeforces|3|\n|<ul><li>- [ ] Done</li></ul>|98|[Wilbur and Array](http://codeforces.com/problemset/problem/596/B)|Codeforces|3|\n|<ul><li>- [ ] Done</li></ul>|99|[Little Xor](http://codeforces.com/problemset/problem/252/A)|Codeforces|3|\n|<ul><li>- [ ] Done</li></ul>|100|[Appleman and Toastman](http://codeforces.com/problemset/problem/461/A)|Codeforces|3|\n|<ul><li>- [ ] Done</li></ul>|101|[Lala Land and Apple Trees](http://codeforces.com/problemset/problem/558/A)|Codeforces|3|\n|<ul><li>- [ ] Done</li></ul>|102|[Cifera](http://codeforces.com/problemset/problem/114/A)|Codeforces|3|\n|<ul><li>- [ ] Done</li></ul>|103|[Fox and Number Game](http://codeforces.com/problemset/problem/389/A)|Codeforces|3|\n|<ul><li>- [ ] Done</li></ul>|104|[The Monster and the Squirrel](http://codeforces.com/problemset/problem/592/B)|Codeforces|3|\n|<ul><li>- [ ] Done</li></ul>|105|[The Child and Homework](http://codeforces.com/problemset/problem/437/A)|Codeforces|3|\n|<ul><li>- [ ] Done</li></ul>|106|[Replacement](http://codeforces.com/problemset/problem/135/A)|Codeforces|3|\n|<ul><li>- [ ] Done</li></ul>|107|[Mashmokh and Numbers](http://codeforces.com/problemset/problem/414/A)|Codeforces|3|\n|<ul><li>- [ ] Done</li></ul>|108|[Unary](http://codeforces.com/problemset/problem/133/B)|Codeforces|3|\n|<ul><li>- [ ] Done</li></ul>|109|[Good Number](http://codeforces.com/problemset/problem/365/A)|Codeforces|3|\n|<ul><li>- [ ] Done</li></ul>|110|[George and Round](http://codeforces.com/problemset/problem/387/B)|Codeforces|3|\n|<ul><li>- [ ] Done</li></ul>|111|[Students and Shoelaces](http://codeforces.com/problemset/problem/129/B)|Codeforces|3|\n|<ul><li>- [ ] Done</li></ul>|112|[Print Check](http://codeforces.com/problemset/problem/631/B)|Codeforces|3|\n|<ul><li>- [ ] Done</li></ul>|113|[War of the Corporations](http://codeforces.com/problemset/problem/625/B)|Codeforces|3|\n|<ul><li>- [ ] Done</li></ul>|114|[Digital Counter](http://codeforces.com/problemset/problem/495/A)|Codeforces|3|\n|<ul><li>- [ ] Done</li></ul>|115|[K-Periodic Array](http://codeforces.com/problemset/problem/371/A)|Codeforces|3|\n|<ul><li>- [ ] Done</li></ul>|116|[Tavas and SaDDas](http://codeforces.com/problemset/problem/535/B)|Codeforces|3|\n|<ul><li>- [ ] Done</li></ul>|117|[Alyona and Numbers](http://codeforces.com/problemset/problem/682/A)|Codeforces|3|\n|<ul><li>- [ ] Done</li></ul>|118|[Case of Fake Numbers](http://codeforces.com/problemset/problem/556/B)|Codeforces|3|\n|<ul><li>- [ ] Done</li></ul>|119|[Football Kit](http://codeforces.com/problemset/problem/432/B)|Codeforces|3|\n|<ul><li>- [ ] Done</li></ul>|120|[Vanya and Books](http://codeforces.com/problemset/problem/552/B)|Codeforces|3|\n|<ul><li>- [ ] Done</li></ul>|121|[Equidistant String](http://codeforces.com/problemset/problem/545/B)|Codeforces|3|\n|<ul><li>- [ ] Done</li></ul>|122|[Lucky Conversion](http://codeforces.com/problemset/problem/145/A)|Codeforces|3|\n|<ul><li>- [ ] Done</li></ul>|123|[Rebranding](http://codeforces.com/problemset/problem/591/B)|Codeforces|3|\n|<ul><li>- [ ] Done</li></ul>|124|[The Wall](http://codeforces.com/problemset/problem/340/A)|Codeforces|3|\n|<ul><li>- [ ] Done</li></ul>|125|[Diverse Permutation](http://codeforces.com/problemset/problem/482/A)|Codeforces|3|\n|<ul><li>- [ ] Done</li></ul>|126|[A and B and Team Training](http://codeforces.com/problemset/problem/519/C)|Codeforces|3|\n|<ul><li>- [ ] Done</li></ul>|127|[Anton and currency you all know](http://codeforces.com/problemset/problem/508/B)|Codeforces|3|\n|<ul><li>- [ ] Done</li></ul>|128|[Bear and Elections](http://codeforces.com/problemset/problem/574/A)|Codeforces|3|\n|<ul><li>- [ ] Done</li></ul>|129|[Chat Online](http://codeforces.com/problemset/problem/469/B)|Codeforces|3|\n|<ul><li>- [ ] Done</li></ul>|130|[Ksenia and Pan Scales](http://codeforces.com/problemset/problem/382/A)|Codeforces|3|\n|<ul><li>- [ ] Done</li></ul>|131|[Valuable Resources](http://codeforces.com/problemset/problem/485/B)|Codeforces|3|\n|<ul><li>- [ ] Done</li></ul>|132|[Strings of Power](http://codeforces.com/problemset/problem/318/B)|Codeforces|3|\n|<ul><li>- [ ] Done</li></ul>|133|[Petya and Staircases](http://codeforces.com/problemset/problem/362/B)|Codeforces|3|\n|<ul><li>- [ ] Done</li></ul>|134|[Ohana Cleans Up](http://codeforces.com/problemset/problem/554/B)|Codeforces|3|\n|<ul><li>- [ ] Done</li></ul>|135|[Beautiful Paintings](http://codeforces.com/problemset/problem/651/B)|Codeforces|3|\n|<ul><li>- [ ] Done</li></ul>|136|[Vasya and Football](http://codeforces.com/problemset/problem/493/A)|Codeforces|3|\n|<ul><li>- [ ] Done</li></ul>|137|[Random Teams](http://codeforces.com/problemset/problem/478/B)|Codeforces|3|\n|<ul><li>- [ ] Done</li></ul>|138|[Sereja and Stairs](http://codeforces.com/problemset/problem/381/B)|Codeforces|3|\n|<ul><li>- [ ] Done</li></ul>|139|[Bear and Strings](http://codeforces.com/problemset/problem/385/B)|Codeforces|3|\n|<ul><li>- [ ] Done</li></ul>|140|[A and B and Compilation Errors](http://codeforces.com/problemset/problem/519/B)|Codeforces|3|\n|<ul><li>- [ ] Done</li></ul>|141|[Drazil and Factorial](http://codeforces.com/problemset/problem/515/C)|Codeforces|3|\n|<ul><li>- [ ] Done</li></ul>|142|[Misha and Changing Handles](http://codeforces.com/problemset/problem/501/B)|Codeforces|3|\n|<ul><li>- [ ] Done</li></ul>|143|[Fedor and New Game](http://codeforces.com/problemset/problem/467/B)|Codeforces|3|\n|<ul><li>- [ ] Done</li></ul>|144|[Alyona and the Tree](http://codeforces.com/problemset/problem/682/C)|Codeforces|4|\n|<ul><li>- [ ] Done</li></ul>|145|[Gena's Code](http://codeforces.com/problemset/problem/614/B)|Codeforces|4|\n|<ul><li>- [ ] Done</li></ul>|146|[Mike and Chocolate Thieves](http://codeforces.com/problemset/problem/689/C)|Codeforces|4|\n|<ul><li>- [ ] Done</li></ul>|147|[Unusual Product](http://codeforces.com/problemset/problem/405/C)|Codeforces|4|\n|<ul><li>- [ ] Done</li></ul>|148|[Economy Game](http://codeforces.com/problemset/problem/681/B)|Codeforces|4|\n|<ul><li>- [ ] Done</li></ul>|149|[Arpa’s obvious problem and Mehrdad’s terrible solution](http://codeforces.com/problemset/problem/742/B)|Codeforces|4|\n|<ul><li>- [ ] Done</li></ul>|150|[Unsorting Array](http://codeforces.com/problemset/problem/252/B)|Codeforces|4|\n|<ul><li>- [ ] Done</li></ul>|151|[Guess a number!](http://codeforces.com/problemset/problem/416/A)|Codeforces|4|\n|<ul><li>- [ ] Done</li></ul>|152|[Plate Game](http://codeforces.com/problemset/problem/197/A)|Codeforces|4|\n|<ul><li>- [ ] Done</li></ul>|153|[Preparing Olympiad](http://codeforces.com/problemset/problem/550/B)|Codeforces|4|\n|<ul><li>- [ ] Done</li></ul>|154|[Mike and Cellphone](http://codeforces.com/problemset/problem/689/A)|Codeforces|4|\n|<ul><li>- [ ] Done</li></ul>|155|[Pasha Maximizes](http://codeforces.com/problemset/problem/435/B)|Codeforces|4|\n|<ul><li>- [ ] Done</li></ul>|156|[Guest From the Past](http://codeforces.com/problemset/problem/625/A)|Codeforces|4|\n|<ul><li>- [ ] Done</li></ul>|157|[Limit](http://codeforces.com/problemset/problem/197/B)|Codeforces|4|\n|<ul><li>- [ ] Done</li></ul>|158|[Order Book](http://codeforces.com/problemset/problem/572/B)|Codeforces|4|\n|<ul><li>- [ ] Done</li></ul>|159|[Watering Flowers](http://codeforces.com/problemset/problem/617/C)|Codeforces|4|\n|<ul><li>- [ ] Done</li></ul>|160|[Dima and Text Messages](http://codeforces.com/problemset/problem/358/B)|Codeforces|4|\n|<ul><li>- [ ] Done</li></ul>|161|[Taxes](http://codeforces.com/problemset/problem/735/D)|Codeforces|4|\n|<ul><li>- [ ] Done</li></ul>|162|[Replacement](http://codeforces.com/problemset/problem/570/C)|Codeforces|4|\n|<ul><li>- [ ] Done</li></ul>|163|[MUH and Important Things](http://codeforces.com/problemset/problem/471/B)|Codeforces|4|\n|<ul><li>- [ ] Done</li></ul>|164|[Ilya and Sticks](http://codeforces.com/problemset/problem/525/C)|Codeforces|4|\n|<ul><li>- [ ] Done</li></ul>|165|[Cthulhu](http://codeforces.com/problemset/problem/103/B)|Codeforces|4|\n|<ul><li>- [ ] Done</li></ul>|166|[Bakery](http://codeforces.com/problemset/problem/707/B)|Codeforces|4|\n|<ul><li>- [ ] Done</li></ul>|167|[New Problem](http://codeforces.com/problemset/problem/278/B)|Codeforces|4|\n|<ul><li>- [ ] Done</li></ul>|168|[Hamming Distance Sum](http://codeforces.com/problemset/problem/608/B)|Codeforces|4|\n|<ul><li>- [ ] Done</li></ul>|169|[Dima and Sequence](http://codeforces.com/problemset/problem/272/B)|Codeforces|4|\n|<ul><li>- [ ] Done</li></ul>|170|[Dima and Lisa](http://codeforces.com/problemset/problem/584/D)|Codeforces|4|\n|<ul><li>- [ ] Done</li></ul>|171|[Soldier and Badges](http://codeforces.com/problemset/problem/546/B)|Codeforces|4|\n|<ul><li>- [ ] Done</li></ul>|172|[Hard problem](http://codeforces.com/problemset/problem/706/C)|Codeforces|4|\n|<ul><li>- [ ] Done</li></ul>|173|[PawnChess](http://codeforces.com/problemset/problem/592/A)|Codeforces|4|\n|<ul><li>- [ ] Done</li></ul>|174|[Pasha and Tea](http://codeforces.com/problemset/problem/557/B)|Codeforces|4|\n|<ul><li>- [ ] Done</li></ul>|175|[Mike and Fun](http://codeforces.com/problemset/problem/548/B)|Codeforces|4|\n|<ul><li>- [ ] Done</li></ul>|176|[Kolya and Tanya ](http://codeforces.com/problemset/problem/584/B)|Codeforces|4|\n|<ul><li>- [ ] Done</li></ul>|177|[Pasha and String](http://codeforces.com/problemset/problem/525/B)|Codeforces|4|\n|<ul><li>- [ ] Done</li></ul>|178|[Vasya and String](http://codeforces.com/problemset/problem/676/C)|Codeforces|4|\n|<ul><li>- [ ] Done</li></ul>|179|[Bits](http://codeforces.com/problemset/problem/484/A)|Codeforces|4|\n|<ul><li>- [ ] Done</li></ul>|180|[DZY Loves Chemistry](http://codeforces.com/problemset/problem/445/B)|Codeforces|4|\n|<ul><li>- [ ] Done</li></ul>|181|[Bear and Three Musketeers](http://codeforces.com/problemset/problem/574/B)|Codeforces|4|\n|<ul><li>- [ ] Done</li></ul>|182|[More Cowbell](http://codeforces.com/problemset/problem/604/B)|Codeforces|4|\n|<ul><li>- [ ] Done</li></ul>|183|[Secret Combination](http://codeforces.com/problemset/problem/496/B)|Codeforces|4|\n|<ul><li>- [ ] Done</li></ul>|184|[Burning Midnight Oil](http://codeforces.com/problemset/problem/165/B)|Codeforces|4|\n|<ul><li>- [ ] Done</li></ul>|185|[Heap Operations](http://codeforces.com/problemset/problem/681/C)|Codeforces|4|\n|<ul><li>- [ ] Done</li></ul>|186|[k-Multiple Free Set](http://codeforces.com/problemset/problem/274/A)|Codeforces|4|\n|<ul><li>- [ ] Done</li></ul>|187|[Kefa and Company](http://codeforces.com/problemset/problem/580/B)|Codeforces|4|\n|<ul><li>- [ ] Done</li></ul>|188|[Queue](http://codeforces.com/problemset/problem/545/D)|Codeforces|4|\n|<ul><li>- [ ] Done</li></ul>|189|[Amr and The Large Array](http://codeforces.com/problemset/problem/558/B)|Codeforces|4|\n|<ul><li>- [ ] Done</li></ul>|190|[Gerald is into Art](http://codeforces.com/problemset/problem/560/B)|Codeforces|4|\n|<ul><li>- [ ] Done</li></ul>|191|[Modular Equations](http://codeforces.com/problemset/problem/495/B)|Codeforces|4|\n|<ul><li>- [ ] Done</li></ul>|192|[Han Solo and Lazer Gun](http://codeforces.com/problemset/problem/514/B)|Codeforces|4|\n|<ul><li>- [ ] Done</li></ul>|193|[Approximating a Constant Range](http://codeforces.com/problemset/problem/602/B)|Codeforces|4|\n|<ul><li>- [ ] Done</li></ul>|194|[OR in Matrix](http://codeforces.com/problemset/problem/486/B)|Codeforces|4|\n|<ul><li>- [ ] Done</li></ul>|195|[Amr and Pins](http://codeforces.com/problemset/problem/507/B)|Codeforces|4|\n|<ul><li>- [ ] Done</li></ul>|196|[Two Substrings](http://codeforces.com/problemset/problem/550/A)|Codeforces|4|\n|<ul><li>- [ ] Done</li></ul>|197|[Soldier and Cards](http://codeforces.com/problemset/problem/546/C)|Codeforces|4|\n|<ul><li>- [ ] Done</li></ul>|198|[Vasya and Wrestling](http://codeforces.com/problemset/problem/493/B)|Codeforces|4|\n|<ul><li>- [ ] Done</li></ul>|199|[Kefa and Park](http://codeforces.com/problemset/problem/580/C)|Codeforces|4|\n|<ul><li>- [ ] Done</li></ul>|200|[Woodcutters](http://codeforces.com/problemset/problem/545/C)|Codeforces|4|\n"
  },
  {
    "path": "ladders/24. 1400 <= Codeforces Rating <= 1499 (Extra)/README.md",
    "content": "# Ladder Name: 24 - 1400 <= Codeforces Rating <= 1499 (Extra)\n## Description\n Extra problems for users satisfying this condition\n## Difficulty Level: 3\n\n| Checkbox | ID  | Problem Name | Online Judge | Difficulty |\n|---|:---:|:---:|---|---|\n|<ul><li>- [ ] Done</li></ul>|1|[Police Recruits](http://codeforces.com/problemset/problem/427/A)|Codeforces|1|\n|<ul><li>- [ ] Done</li></ul>|2|[Spit Problem](http://codeforces.com/problemset/problem/29/A)|Codeforces|1|\n|<ul><li>- [ ] Done</li></ul>|3|[Reconnaissance](http://codeforces.com/problemset/problem/32/A)|Codeforces|1|\n|<ul><li>- [ ] Done</li></ul>|4|[Playing with Dice](http://codeforces.com/problemset/problem/378/A)|Codeforces|1|\n|<ul><li>- [ ] Done</li></ul>|5|[Line to Cashier](http://codeforces.com/problemset/problem/408/A)|Codeforces|1|\n|<ul><li>- [ ] Done</li></ul>|6|[GukiZ and Contest](http://codeforces.com/problemset/problem/551/A)|Codeforces|1|\n|<ul><li>- [ ] Done</li></ul>|7|[Soldier and Bananas](http://codeforces.com/problemset/problem/546/A)|Codeforces|1|\n|<ul><li>- [ ] Done</li></ul>|8|[Games](http://codeforces.com/problemset/problem/268/A)|Codeforces|1|\n|<ul><li>- [ ] Done</li></ul>|9|[Restoring Password](http://codeforces.com/problemset/problem/94/A)|Codeforces|1|\n|<ul><li>- [ ] Done</li></ul>|10|[Soroban](http://codeforces.com/problemset/problem/363/A)|Codeforces|1|\n|<ul><li>- [ ] Done</li></ul>|11|[Greg's Workout](http://codeforces.com/problemset/problem/255/A)|Codeforces|1|\n|<ul><li>- [ ] Done</li></ul>|12|[LLPS](http://codeforces.com/problemset/problem/202/A)|Codeforces|1|\n|<ul><li>- [ ] Done</li></ul>|13|[Colorful Stones (Simplified Edition)](http://codeforces.com/problemset/problem/265/A)|Codeforces|1|\n|<ul><li>- [ ] Done</li></ul>|14|[Roma and Lucky Numbers](http://codeforces.com/problemset/problem/262/A)|Codeforces|1|\n|<ul><li>- [ ] Done</li></ul>|15|[Toy Army](http://codeforces.com/problemset/problem/84/A)|Codeforces|1|\n|<ul><li>- [ ] Done</li></ul>|16|[Buggy Sorting](http://codeforces.com/problemset/problem/246/A)|Codeforces|1|\n|<ul><li>- [ ] Done</li></ul>|17|[Queue on Bus Stop](http://codeforces.com/problemset/problem/435/A)|Codeforces|2|\n|<ul><li>- [ ] Done</li></ul>|18|[Amr and Music](http://codeforces.com/problemset/problem/507/A)|Codeforces|2|\n|<ul><li>- [ ] Done</li></ul>|19|[Table](http://codeforces.com/problemset/problem/359/A)|Codeforces|2|\n|<ul><li>- [ ] Done</li></ul>|20|[A and B and Chess](http://codeforces.com/problemset/problem/519/A)|Codeforces|2|\n|<ul><li>- [ ] Done</li></ul>|21|[Valera and Plates](http://codeforces.com/problemset/problem/369/A)|Codeforces|2|\n|<ul><li>- [ ] Done</li></ul>|22|[Exams](http://codeforces.com/problemset/problem/194/A)|Codeforces|2|\n|<ul><li>- [ ] Done</li></ul>|23|[Ilya and Diplomas](http://codeforces.com/problemset/problem/557/A)|Codeforces|2|\n|<ul><li>- [ ] Done</li></ul>|24|[Help Vasilisa the Wise 2](http://codeforces.com/problemset/problem/143/A)|Codeforces|2|\n|<ul><li>- [ ] Done</li></ul>|25|[George and Sleep](http://codeforces.com/problemset/problem/387/A)|Codeforces|2|\n|<ul><li>- [ ] Done</li></ul>|26|[Sereja and Coat Rack](http://codeforces.com/problemset/problem/368/A)|Codeforces|2|\n|<ul><li>- [ ] Done</li></ul>|27|[Squares](http://codeforces.com/problemset/problem/263/B)|Codeforces|2|\n|<ul><li>- [ ] Done</li></ul>|28|[Lecture](http://codeforces.com/problemset/problem/499/B)|Codeforces|2|\n|<ul><li>- [ ] Done</li></ul>|29|[Valera and Antique Items](http://codeforces.com/problemset/problem/441/A)|Codeforces|2|\n|<ul><li>- [ ] Done</li></ul>|30|[Card Game](http://codeforces.com/problemset/problem/106/A)|Codeforces|2|\n|<ul><li>- [ ] Done</li></ul>|31|[Arrays](http://codeforces.com/problemset/problem/572/A)|Codeforces|2|\n|<ul><li>- [ ] Done</li></ul>|32|[Buttons](http://codeforces.com/problemset/problem/268/B)|Codeforces|2|\n|<ul><li>- [ ] Done</li></ul>|33|[Sinking Ship](http://codeforces.com/problemset/problem/63/A)|Codeforces|2|\n|<ul><li>- [ ] Done</li></ul>|34|[Lucky Ticket](http://codeforces.com/problemset/problem/146/A)|Codeforces|2|\n|<ul><li>- [ ] Done</li></ul>|35|[Kefa and First Steps](http://codeforces.com/problemset/problem/580/A)|Codeforces|2|\n|<ul><li>- [ ] Done</li></ul>|36|[Lucky String](http://codeforces.com/problemset/problem/110/B)|Codeforces|2|\n|<ul><li>- [ ] Done</li></ul>|37|[Vasya and Digital Root](http://codeforces.com/problemset/problem/355/A)|Codeforces|2|\n|<ul><li>- [ ] Done</li></ul>|38|[Joysticks](http://codeforces.com/problemset/problem/651/A)|Codeforces|2|\n|<ul><li>- [ ] Done</li></ul>|39|[Case of the Zeros and Ones](http://codeforces.com/problemset/problem/556/A)|Codeforces|2|\n|<ul><li>- [ ] Done</li></ul>|40|[Little Frog](http://codeforces.com/problemset/problem/53/C)|Codeforces|2|\n|<ul><li>- [ ] Done</li></ul>|41|[Prison Transfer](http://codeforces.com/problemset/problem/427/B)|Codeforces|2|\n|<ul><li>- [ ] Done</li></ul>|42|[Bear and Raspberry](http://codeforces.com/problemset/problem/385/A)|Codeforces|2|\n|<ul><li>- [ ] Done</li></ul>|43|[Palindromic Times](http://codeforces.com/problemset/problem/108/A)|Codeforces|2|\n|<ul><li>- [ ] Done</li></ul>|44|[Calculating Function](http://codeforces.com/problemset/problem/486/A)|Codeforces|2|\n|<ul><li>- [ ] Done</li></ul>|45|[Currency System in Geraldion](http://codeforces.com/problemset/problem/560/A)|Codeforces|2|\n|<ul><li>- [ ] Done</li></ul>|46|[Game With Sticks](http://codeforces.com/problemset/problem/451/A)|Codeforces|2|\n|<ul><li>- [ ] Done</li></ul>|47|[Roadside Trees (Simplified Edition)](http://codeforces.com/problemset/problem/265/B)|Codeforces|2|\n|<ul><li>- [ ] Done</li></ul>|48|[Game Outcome](http://codeforces.com/problemset/problem/157/A)|Codeforces|2|\n|<ul><li>- [ ] Done</li></ul>|49|[Ciel and Dancing](http://codeforces.com/problemset/problem/322/A)|Codeforces|2|\n|<ul><li>- [ ] Done</li></ul>|50|[Lucky Substring](http://codeforces.com/problemset/problem/122/B)|Codeforces|2|\n|<ul><li>- [ ] Done</li></ul>|51|[Group of Students](http://codeforces.com/problemset/problem/357/A)|Codeforces|2|\n|<ul><li>- [ ] Done</li></ul>|52|[Drazil and Date](http://codeforces.com/problemset/problem/515/A)|Codeforces|2|\n|<ul><li>- [ ] Done</li></ul>|53|[Valera and X](http://codeforces.com/problemset/problem/404/A)|Codeforces|2|\n|<ul><li>- [ ] Done</li></ul>|54|[Petya and Countryside](http://codeforces.com/problemset/problem/66/B)|Codeforces|2|\n|<ul><li>- [ ] Done</li></ul>|55|[Inna and Choose Options](http://codeforces.com/problemset/problem/400/A)|Codeforces|2|\n|<ul><li>- [ ] Done</li></ul>|56|[Trace](http://codeforces.com/problemset/problem/157/B)|Codeforces|2|\n|<ul><li>- [ ] Done</li></ul>|57|[Little Elephant and Magic Square](http://codeforces.com/problemset/problem/259/B)|Codeforces|2|\n|<ul><li>- [ ] Done</li></ul>|58|[Pasha and Pixels](http://codeforces.com/problemset/problem/508/A)|Codeforces|3|\n|<ul><li>- [ ] Done</li></ul>|59|[Eugeny and Play List](http://codeforces.com/problemset/problem/302/B)|Codeforces|3|\n|<ul><li>- [ ] Done</li></ul>|60|[Simple Game](http://codeforces.com/problemset/problem/570/B)|Codeforces|3|\n|<ul><li>- [ ] Done</li></ul>|61|[Vanya and Books](http://codeforces.com/problemset/problem/552/B)|Codeforces|3|\n|<ul><li>- [ ] Done</li></ul>|62|[Appleman and Toastman](http://codeforces.com/problemset/problem/461/A)|Codeforces|3|\n|<ul><li>- [ ] Done</li></ul>|63|[Bear and Strings](http://codeforces.com/problemset/problem/385/B)|Codeforces|3|\n|<ul><li>- [ ] Done</li></ul>|64|[Misha and Changing Handles](http://codeforces.com/problemset/problem/501/B)|Codeforces|3|\n|<ul><li>- [ ] Done</li></ul>|65|[Tiling with Hexagons](http://codeforces.com/problemset/problem/216/A)|Codeforces|3|\n|<ul><li>- [ ] Done</li></ul>|66|[Dima and To-do List](http://codeforces.com/problemset/problem/366/B)|Codeforces|3|\n|<ul><li>- [ ] Done</li></ul>|67|[Vitaliy and Pie](http://codeforces.com/problemset/problem/525/A)|Codeforces|3|\n|<ul><li>- [ ] Done</li></ul>|68|[Xor-tree](http://codeforces.com/problemset/problem/429/A)|Codeforces|3|\n|<ul><li>- [ ] Done</li></ul>|69|[Snow Footprints](http://codeforces.com/problemset/problem/298/A)|Codeforces|3|\n|<ul><li>- [ ] Done</li></ul>|70|[Vasya and Football](http://codeforces.com/problemset/problem/493/A)|Codeforces|3|\n|<ul><li>- [ ] Done</li></ul>|71|[Tournament](http://codeforces.com/problemset/problem/27/B)|Codeforces|3|\n|<ul><li>- [ ] Done</li></ul>|72|[Lala Land and Apple Trees](http://codeforces.com/problemset/problem/558/A)|Codeforces|3|\n|<ul><li>- [ ] Done</li></ul>|73|[Chocolate](http://codeforces.com/problemset/problem/617/B)|Codeforces|3|\n|<ul><li>- [ ] Done</li></ul>|74|[Rook, Bishop and King](http://codeforces.com/problemset/problem/370/A)|Codeforces|3|\n|<ul><li>- [ ] Done</li></ul>|75|[Lucky Tickets](http://codeforces.com/problemset/problem/43/C)|Codeforces|3|\n|<ul><li>- [ ] Done</li></ul>|76|[Bar](http://codeforces.com/problemset/problem/56/A)|Codeforces|3|\n|<ul><li>- [ ] Done</li></ul>|77|[Case of Fake Numbers](http://codeforces.com/problemset/problem/556/B)|Codeforces|3|\n|<ul><li>- [ ] Done</li></ul>|78|[Sockets](http://codeforces.com/problemset/problem/257/A)|Codeforces|3|\n|<ul><li>- [ ] Done</li></ul>|79|[War of the Corporations](http://codeforces.com/problemset/problem/625/B)|Codeforces|3|\n|<ul><li>- [ ] Done</li></ul>|80|[Diverse Permutation](http://codeforces.com/problemset/problem/482/A)|Codeforces|3|\n|<ul><li>- [ ] Done</li></ul>|81|[Garland](http://codeforces.com/problemset/problem/408/B)|Codeforces|3|\n|<ul><li>- [ ] Done</li></ul>|82|[Binary Number](http://codeforces.com/problemset/problem/92/B)|Codeforces|3|\n|<ul><li>- [ ] Done</li></ul>|83|[Walking in the Rain](http://codeforces.com/problemset/problem/192/B)|Codeforces|3|\n|<ul><li>- [ ] Done</li></ul>|84|[Good Number](http://codeforces.com/problemset/problem/365/A)|Codeforces|3|\n|<ul><li>- [ ] Done</li></ul>|85|[Replacement](http://codeforces.com/problemset/problem/135/A)|Codeforces|3|\n|<ul><li>- [ ] Done</li></ul>|86|[Little Xor](http://codeforces.com/problemset/problem/252/A)|Codeforces|3|\n|<ul><li>- [ ] Done</li></ul>|87|[Strings of Power](http://codeforces.com/problemset/problem/318/B)|Codeforces|3|\n|<ul><li>- [ ] Done</li></ul>|88|[Chewba?ca and Number](http://codeforces.com/problemset/problem/514/A)|Codeforces|3|\n|<ul><li>- [ ] Done</li></ul>|89|[Little Elephant and Numbers](http://codeforces.com/problemset/problem/221/B)|Codeforces|3|\n|<ul><li>- [ ] Done</li></ul>|90|[Lucky Conversion](http://codeforces.com/problemset/problem/145/A)|Codeforces|3|\n|<ul><li>- [ ] Done</li></ul>|91|[Chat Online](http://codeforces.com/problemset/problem/469/B)|Codeforces|3|\n|<ul><li>- [ ] Done</li></ul>|92|[Combination](http://codeforces.com/problemset/problem/155/B)|Codeforces|3|\n|<ul><li>- [ ] Done</li></ul>|93|[Levko and Permutation](http://codeforces.com/problemset/problem/361/B)|Codeforces|3|\n|<ul><li>- [ ] Done</li></ul>|94|[Sorting Railway Cars](http://codeforces.com/problemset/problem/605/A)|Codeforces|3|\n|<ul><li>- [ ] Done</li></ul>|95|[Vasya and Petya's Game](http://codeforces.com/problemset/problem/576/A)|Codeforces|3|\n|<ul><li>- [ ] Done</li></ul>|96|[Coins](http://codeforces.com/problemset/problem/58/B)|Codeforces|3|\n|<ul><li>- [ ] Done</li></ul>|97|[Bear and Elections](http://codeforces.com/problemset/problem/574/A)|Codeforces|3|\n|<ul><li>- [ ] Done</li></ul>|98|[A and B and Compilation Errors](http://codeforces.com/problemset/problem/519/B)|Codeforces|3|\n|<ul><li>- [ ] Done</li></ul>|99|[Mashmokh and Numbers](http://codeforces.com/problemset/problem/414/A)|Codeforces|3|\n|<ul><li>- [ ] Done</li></ul>|100|[Unary](http://codeforces.com/problemset/problem/133/B)|Codeforces|3|\n|<ul><li>- [ ] Done</li></ul>|101|[Football Kit](http://codeforces.com/problemset/problem/432/B)|Codeforces|3|\n|<ul><li>- [ ] Done</li></ul>|102|[Devu, the Dumb Guy](http://codeforces.com/problemset/problem/439/B)|Codeforces|3|\n|<ul><li>- [ ] Done</li></ul>|103|[The Wall](http://codeforces.com/problemset/problem/340/A)|Codeforces|3|\n|<ul><li>- [ ] Done</li></ul>|104|[Watchmen](http://codeforces.com/problemset/problem/650/A)|Codeforces|3|\n|<ul><li>- [ ] Done</li></ul>|105|[Petya and Staircases](http://codeforces.com/problemset/problem/362/B)|Codeforces|3|\n|<ul><li>- [ ] Done</li></ul>|106|[Students and Shoelaces](http://codeforces.com/problemset/problem/129/B)|Codeforces|3|\n|<ul><li>- [ ] Done</li></ul>|107|[Bear and Poker](http://codeforces.com/problemset/problem/573/A)|Codeforces|3|\n|<ul><li>- [ ] Done</li></ul>|108|[Permutation](http://codeforces.com/problemset/problem/359/B)|Codeforces|3|\n|<ul><li>- [ ] Done</li></ul>|109|[Cifera](http://codeforces.com/problemset/problem/114/A)|Codeforces|3|\n|<ul><li>- [ ] Done</li></ul>|110|[The Child and Homework](http://codeforces.com/problemset/problem/437/A)|Codeforces|3|\n|<ul><li>- [ ] Done</li></ul>|111|[Fedor and New Game](http://codeforces.com/problemset/problem/467/B)|Codeforces|3|\n|<ul><li>- [ ] Done</li></ul>|112|[Prizes, Prizes, more Prizes](http://codeforces.com/problemset/problem/208/D)|Codeforces|3|\n|<ul><li>- [ ] Done</li></ul>|113|[Valuable Resources](http://codeforces.com/problemset/problem/485/B)|Codeforces|3|\n|<ul><li>- [ ] Done</li></ul>|114|[Anton and currency you all know](http://codeforces.com/problemset/problem/508/B)|Codeforces|3|\n|<ul><li>- [ ] Done</li></ul>|115|[Fox and Number Game](http://codeforces.com/problemset/problem/389/A)|Codeforces|3|\n|<ul><li>- [ ] Done</li></ul>|116|[Art Union](http://codeforces.com/problemset/problem/416/B)|Codeforces|3|\n|<ul><li>- [ ] Done</li></ul>|117|[A and B and Team Training](http://codeforces.com/problemset/problem/519/C)|Codeforces|3|\n|<ul><li>- [ ] Done</li></ul>|118|[Drazil and Factorial](http://codeforces.com/problemset/problem/515/C)|Codeforces|3|\n|<ul><li>- [ ] Done</li></ul>|119|[Random Teams](http://codeforces.com/problemset/problem/478/B)|Codeforces|3|\n|<ul><li>- [ ] Done</li></ul>|120|[Secret Combination](http://codeforces.com/problemset/problem/496/B)|Codeforces|4|\n|<ul><li>- [ ] Done</li></ul>|121|[Tree Construction](http://codeforces.com/problemset/problem/675/D)|Codeforces|4|\n|<ul><li>- [ ] Done</li></ul>|122|[Report](http://codeforces.com/problemset/problem/631/C)|Codeforces|4|\n|<ul><li>- [ ] Done</li></ul>|123|[Cardiogram](http://codeforces.com/problemset/problem/435/C)|Codeforces|4|\n|<ul><li>- [ ] Done</li></ul>|124|[Order Book](http://codeforces.com/problemset/problem/572/B)|Codeforces|4|\n|<ul><li>- [ ] Done</li></ul>|125|[Dima and Text Messages](http://codeforces.com/problemset/problem/358/B)|Codeforces|4|\n|<ul><li>- [ ] Done</li></ul>|126|[Division into Teams](http://codeforces.com/problemset/problem/149/C)|Codeforces|4|\n|<ul><li>- [ ] Done</li></ul>|127|[Predict Outcome of the Game](http://codeforces.com/problemset/problem/451/C)|Codeforces|4|\n|<ul><li>- [ ] Done</li></ul>|128|[School Marks](http://codeforces.com/problemset/problem/540/B)|Codeforces|4|\n|<ul><li>- [ ] Done</li></ul>|129|[Biridian Forest](http://codeforces.com/problemset/problem/329/B)|Codeforces|4|\n|<ul><li>- [ ] Done</li></ul>|130|[Chris and Magic Square](http://codeforces.com/problemset/problem/711/B)|Codeforces|4|\n|<ul><li>- [ ] Done</li></ul>|131|[Xenia and Spies](http://codeforces.com/problemset/problem/342/B)|Codeforces|4|\n|<ul><li>- [ ] Done</li></ul>|132|[ZgukistringZ](http://codeforces.com/problemset/problem/551/B)|Codeforces|4|\n|<ul><li>- [ ] Done</li></ul>|133|[Unusual Product](http://codeforces.com/problemset/problem/405/C)|Codeforces|4|\n|<ul><li>- [ ] Done</li></ul>|134|[Pyramid of Glasses](http://codeforces.com/problemset/problem/676/B)|Codeforces|4|\n|<ul><li>- [ ] Done</li></ul>|135|[Mashmokh and Tokens](http://codeforces.com/problemset/problem/415/B)|Codeforces|4|\n|<ul><li>- [ ] Done</li></ul>|136|[Alternating Current](http://codeforces.com/problemset/problem/343/B)|Codeforces|4|\n|<ul><li>- [ ] Done</li></ul>|137|[Primes on Interval](http://codeforces.com/problemset/problem/237/C)|Codeforces|4|\n|<ul><li>- [ ] Done</li></ul>|138|[Memory and De-Evolution](http://codeforces.com/problemset/problem/712/C)|Codeforces|4|\n|<ul><li>- [ ] Done</li></ul>|139|[Vasya and Wrestling](http://codeforces.com/problemset/problem/493/B)|Codeforces|4|\n|<ul><li>- [ ] Done</li></ul>|140|[GCD Table](http://codeforces.com/problemset/problem/582/A)|Codeforces|4|\n|<ul><li>- [ ] Done</li></ul>|141|[Valera and Contest](http://codeforces.com/problemset/problem/369/B)|Codeforces|4|\n|<ul><li>- [ ] Done</li></ul>|142|[Approximating a Constant Range](http://codeforces.com/problemset/problem/602/B)|Codeforces|4|\n|<ul><li>- [ ] Done</li></ul>|143|[Heap Operations](http://codeforces.com/problemset/problem/681/C)|Codeforces|4|\n|<ul><li>- [ ] Done</li></ul>|144|[Alice and Bob](http://codeforces.com/problemset/problem/346/A)|Codeforces|4|\n|<ul><li>- [ ] Done</li></ul>|145|[Undoubtedly Lucky Numbers](http://codeforces.com/problemset/problem/244/B)|Codeforces|4|\n|<ul><li>- [ ] Done</li></ul>|146|[Gerald's Hexagon](http://codeforces.com/problemset/problem/559/A)|Codeforces|4|\n|<ul><li>- [ ] Done</li></ul>|147|[Vasya and the Bus](http://codeforces.com/problemset/problem/190/A)|Codeforces|4|\n|<ul><li>- [ ] Done</li></ul>|148|[Modular Equations](http://codeforces.com/problemset/problem/495/B)|Codeforces|4|\n|<ul><li>- [ ] Done</li></ul>|149|[Dima and Sequence](http://codeforces.com/problemset/problem/272/B)|Codeforces|4|\n|<ul><li>- [ ] Done</li></ul>|150|[Kolya and Tanya ](http://codeforces.com/problemset/problem/584/B)|Codeforces|4|\n|<ul><li>- [ ] Done</li></ul>|151|[Marina and Vasya](http://codeforces.com/problemset/problem/584/C)|Codeforces|4|\n|<ul><li>- [ ] Done</li></ul>|152|[More Cowbell](http://codeforces.com/problemset/problem/604/B)|Codeforces|4|\n|<ul><li>- [ ] Done</li></ul>|153|[Quiz](http://codeforces.com/problemset/problem/337/C)|Codeforces|4|\n|<ul><li>- [ ] Done</li></ul>|154|[Hard problem](http://codeforces.com/problemset/problem/706/C)|Codeforces|4|\n|<ul><li>- [ ] Done</li></ul>|155|[Bits](http://codeforces.com/problemset/problem/484/A)|Codeforces|4|\n|<ul><li>- [ ] Done</li></ul>|156|[Dima and Lisa](http://codeforces.com/problemset/problem/584/D)|Codeforces|4|\n|<ul><li>- [ ] Done</li></ul>|157|[Little Elephant and Sorting](http://codeforces.com/problemset/problem/205/B)|Codeforces|4|\n|<ul><li>- [ ] Done</li></ul>|158|[Alyona and the Tree](http://codeforces.com/problemset/problem/682/C)|Codeforces|4|\n|<ul><li>- [ ] Done</li></ul>|159|[Guess Your Way Out!](http://codeforces.com/problemset/problem/507/C)|Codeforces|4|\n|<ul><li>- [ ] Done</li></ul>|160|[Parity Game](http://codeforces.com/problemset/problem/297/A)|Codeforces|4|\n|<ul><li>- [ ] Done</li></ul>|161|[Robbers' watch](http://codeforces.com/problemset/problem/685/A)|Codeforces|4|\n|<ul><li>- [ ] Done</li></ul>|162|[DZY Loves Chemistry](http://codeforces.com/problemset/problem/445/B)|Codeforces|4|\n|<ul><li>- [ ] Done</li></ul>|163|[Chilly Willy](http://codeforces.com/problemset/problem/248/B)|Codeforces|4|\n|<ul><li>- [ ] Done</li></ul>|164|[Photographer](http://codeforces.com/problemset/problem/203/C)|Codeforces|4|\n|<ul><li>- [ ] Done</li></ul>|165|[The Child and Set](http://codeforces.com/problemset/problem/437/B)|Codeforces|4|\n|<ul><li>- [ ] Done</li></ul>|166|[Find Maximum](http://codeforces.com/problemset/problem/353/C)|Codeforces|4|\n|<ul><li>- [ ] Done</li></ul>|167|[Trees in a Row](http://codeforces.com/problemset/problem/402/B)|Codeforces|4|\n|<ul><li>- [ ] Done</li></ul>|168|[Cows and Primitive Roots](http://codeforces.com/problemset/problem/284/A)|Codeforces|4|\n|<ul><li>- [ ] Done</li></ul>|169|[Mike and Shortcuts](http://codeforces.com/problemset/problem/689/B)|Codeforces|4|\n|<ul><li>- [ ] Done</li></ul>|170|[Pasha and String](http://codeforces.com/problemset/problem/525/B)|Codeforces|4|\n|<ul><li>- [ ] Done</li></ul>|171|[Soldier and Cards](http://codeforces.com/problemset/problem/546/C)|Codeforces|4|\n|<ul><li>- [ ] Done</li></ul>|172|[Pasha and Tea](http://codeforces.com/problemset/problem/557/B)|Codeforces|4|\n|<ul><li>- [ ] Done</li></ul>|173|[Vasya and String](http://codeforces.com/problemset/problem/676/C)|Codeforces|4|\n|<ul><li>- [ ] Done</li></ul>|174|[Mike and Fun](http://codeforces.com/problemset/problem/548/B)|Codeforces|4|\n|<ul><li>- [ ] Done</li></ul>|175|[Non-square Equation](http://codeforces.com/problemset/problem/233/B)|Codeforces|4|\n|<ul><li>- [ ] Done</li></ul>|176|[Ilya and Sticks](http://codeforces.com/problemset/problem/525/C)|Codeforces|4|\n|<ul><li>- [ ] Done</li></ul>|177|[Gerald is into Art](http://codeforces.com/problemset/problem/560/B)|Codeforces|4|\n|<ul><li>- [ ] Done</li></ul>|178|[Guess a number!](http://codeforces.com/problemset/problem/416/A)|Codeforces|4|\n|<ul><li>- [ ] Done</li></ul>|179|[Queue](http://codeforces.com/problemset/problem/545/D)|Codeforces|4|\n|<ul><li>- [ ] Done</li></ul>|180|[Han Solo and Lazer Gun](http://codeforces.com/problemset/problem/514/B)|Codeforces|4|\n|<ul><li>- [ ] Done</li></ul>|181|[Bear and Three Musketeers](http://codeforces.com/problemset/problem/574/B)|Codeforces|4|\n|<ul><li>- [ ] Done</li></ul>|182|[History](http://codeforces.com/problemset/problem/137/C)|Codeforces|4|\n|<ul><li>- [ ] Done</li></ul>|183|[Amr and Pins](http://codeforces.com/problemset/problem/507/B)|Codeforces|4|\n|<ul><li>- [ ] Done</li></ul>|184|[Burning Midnight Oil](http://codeforces.com/problemset/problem/165/B)|Codeforces|4|\n|<ul><li>- [ ] Done</li></ul>|185|[Dreamoon and Sums](http://codeforces.com/problemset/problem/476/C)|Codeforces|4|\n|<ul><li>- [ ] Done</li></ul>|186|[Replacement](http://codeforces.com/problemset/problem/570/C)|Codeforces|4|\n|<ul><li>- [ ] Done</li></ul>|187|[Preparing Olympiad](http://codeforces.com/problemset/problem/550/B)|Codeforces|4|\n|<ul><li>- [ ] Done</li></ul>|188|[OR in Matrix](http://codeforces.com/problemset/problem/486/B)|Codeforces|4|\n|<ul><li>- [ ] Done</li></ul>|189|[Amr and The Large Array](http://codeforces.com/problemset/problem/558/B)|Codeforces|4|\n|<ul><li>- [ ] Done</li></ul>|190|[Soldier and Badges](http://codeforces.com/problemset/problem/546/B)|Codeforces|4|\n|<ul><li>- [ ] Done</li></ul>|191|[Two Substrings](http://codeforces.com/problemset/problem/550/A)|Codeforces|4|\n|<ul><li>- [ ] Done</li></ul>|192|[k-Multiple Free Set](http://codeforces.com/problemset/problem/274/A)|Codeforces|4|\n|<ul><li>- [ ] Done</li></ul>|193|[Kefa and Company](http://codeforces.com/problemset/problem/580/B)|Codeforces|4|\n|<ul><li>- [ ] Done</li></ul>|194|[Woodcutters](http://codeforces.com/problemset/problem/545/C)|Codeforces|4|\n|<ul><li>- [ ] Done</li></ul>|195|[Kefa and Park](http://codeforces.com/problemset/problem/580/C)|Codeforces|4|\n|<ul><li>- [ ] Done</li></ul>|196|[Money Transfers](http://codeforces.com/problemset/problem/675/C)|Codeforces|5|\n|<ul><li>- [ ] Done</li></ul>|197|[Surrounded](http://codeforces.com/problemset/problem/190/B)|Codeforces|5|\n|<ul><li>- [ ] Done</li></ul>|198|[Amr and Chemistry](http://codeforces.com/problemset/problem/558/C)|Codeforces|5|\n|<ul><li>- [ ] Done</li></ul>|199|[Modulo Sum](http://codeforces.com/problemset/problem/577/B)|Codeforces|5|\n|<ul><li>- [ ] Done</li></ul>|200|[Kefa and Dishes](http://codeforces.com/problemset/problem/580/D)|Codeforces|5|\n"
  },
  {
    "path": "ladders/25. 1500 <= Codeforces Rating <= 1599 (Extra)/README.md",
    "content": "# Ladder Name: 25 - 1500 <= Codeforces Rating <= 1599 (Extra)\n## Description\n Extra problems for users satisfying this condition\n## Difficulty Level: 3\n\n| Checkbox | ID  | Problem Name | Online Judge | Difficulty |\n|---|:---:|:---:|---|---|\n|<ul><li>- [ ] Done</li></ul>|1|[Rewards](http://codeforces.com/problemset/problem/448/A)|Codeforces|1|\n|<ul><li>- [ ] Done</li></ul>|2|[Games](http://codeforces.com/problemset/problem/268/A)|Codeforces|1|\n|<ul><li>- [ ] Done</li></ul>|3|[Police Recruits](http://codeforces.com/problemset/problem/427/A)|Codeforces|1|\n|<ul><li>- [ ] Done</li></ul>|4|[Squats](http://codeforces.com/problemset/problem/424/A)|Codeforces|1|\n|<ul><li>- [ ] Done</li></ul>|5|[Soroban](http://codeforces.com/problemset/problem/363/A)|Codeforces|1|\n|<ul><li>- [ ] Done</li></ul>|6|[Buggy Sorting](http://codeforces.com/problemset/problem/246/A)|Codeforces|1|\n|<ul><li>- [ ] Done</li></ul>|7|[Mashmokh and Lights](http://codeforces.com/problemset/problem/415/A)|Codeforces|1|\n|<ul><li>- [ ] Done</li></ul>|8|[Colorful Stones (Simplified Edition)](http://codeforces.com/problemset/problem/265/A)|Codeforces|1|\n|<ul><li>- [ ] Done</li></ul>|9|[Kyoya and Photobooks](http://codeforces.com/problemset/problem/554/A)|Codeforces|1|\n|<ul><li>- [ ] Done</li></ul>|10|[Greg's Workout](http://codeforces.com/problemset/problem/255/A)|Codeforces|1|\n|<ul><li>- [ ] Done</li></ul>|11|[Roma and Lucky Numbers](http://codeforces.com/problemset/problem/262/A)|Codeforces|1|\n|<ul><li>- [ ] Done</li></ul>|12|[Shaass and Oskols](http://codeforces.com/problemset/problem/294/A)|Codeforces|1|\n|<ul><li>- [ ] Done</li></ul>|13|[Circle Line](http://codeforces.com/problemset/problem/278/A)|Codeforces|1|\n|<ul><li>- [ ] Done</li></ul>|14|[Wasted Time](http://codeforces.com/problemset/problem/127/A)|Codeforces|1|\n|<ul><li>- [ ] Done</li></ul>|15|[LLPS](http://codeforces.com/problemset/problem/202/A)|Codeforces|1|\n|<ul><li>- [ ] Done</li></ul>|16|[Game Outcome](http://codeforces.com/problemset/problem/157/A)|Codeforces|2|\n|<ul><li>- [ ] Done</li></ul>|17|[Devu, the Singer and Churu, the Joker](http://codeforces.com/problemset/problem/439/A)|Codeforces|2|\n|<ul><li>- [ ] Done</li></ul>|18|[Drazil and Date](http://codeforces.com/problemset/problem/515/A)|Codeforces|2|\n|<ul><li>- [ ] Done</li></ul>|19|[Palindromic Times](http://codeforces.com/problemset/problem/108/A)|Codeforces|2|\n|<ul><li>- [ ] Done</li></ul>|20|[Dima and Guards](http://codeforces.com/problemset/problem/366/A)|Codeforces|2|\n|<ul><li>- [ ] Done</li></ul>|21|[Calculating Function](http://codeforces.com/problemset/problem/486/A)|Codeforces|2|\n|<ul><li>- [ ] Done</li></ul>|22|[Polo the Penguin and Segments ](http://codeforces.com/problemset/problem/289/A)|Codeforces|2|\n|<ul><li>- [ ] Done</li></ul>|23|[Case of the Zeros and Ones](http://codeforces.com/problemset/problem/556/A)|Codeforces|2|\n|<ul><li>- [ ] Done</li></ul>|24|[A and B and Chess](http://codeforces.com/problemset/problem/519/A)|Codeforces|2|\n|<ul><li>- [ ] Done</li></ul>|25|[Buttons](http://codeforces.com/problemset/problem/268/B)|Codeforces|2|\n|<ul><li>- [ ] Done</li></ul>|26|[Lucky Substring](http://codeforces.com/problemset/problem/122/B)|Codeforces|2|\n|<ul><li>- [ ] Done</li></ul>|27|[Vasya and Digital Root](http://codeforces.com/problemset/problem/355/A)|Codeforces|2|\n|<ul><li>- [ ] Done</li></ul>|28|[Sinking Ship](http://codeforces.com/problemset/problem/63/A)|Codeforces|2|\n|<ul><li>- [ ] Done</li></ul>|29|[Valera and Antique Items](http://codeforces.com/problemset/problem/441/A)|Codeforces|2|\n|<ul><li>- [ ] Done</li></ul>|30|[Cows and Poker Game](http://codeforces.com/problemset/problem/284/B)|Codeforces|2|\n|<ul><li>- [ ] Done</li></ul>|31|[Valera and Plates](http://codeforces.com/problemset/problem/369/A)|Codeforces|2|\n|<ul><li>- [ ] Done</li></ul>|32|[Little Frog](http://codeforces.com/problemset/problem/53/C)|Codeforces|2|\n|<ul><li>- [ ] Done</li></ul>|33|[Lever](http://codeforces.com/problemset/problem/376/A)|Codeforces|2|\n|<ul><li>- [ ] Done</li></ul>|34|[Roadside Trees (Simplified Edition)](http://codeforces.com/problemset/problem/265/B)|Codeforces|2|\n|<ul><li>- [ ] Done</li></ul>|35|[Table](http://codeforces.com/problemset/problem/359/A)|Codeforces|2|\n|<ul><li>- [ ] Done</li></ul>|36|[Ciel and Dancing](http://codeforces.com/problemset/problem/322/A)|Codeforces|2|\n|<ul><li>- [ ] Done</li></ul>|37|[Valera and X](http://codeforces.com/problemset/problem/404/A)|Codeforces|2|\n|<ul><li>- [ ] Done</li></ul>|38|[Game With Sticks](http://codeforces.com/problemset/problem/451/A)|Codeforces|2|\n|<ul><li>- [ ] Done</li></ul>|39|[Prison Transfer](http://codeforces.com/problemset/problem/427/B)|Codeforces|2|\n|<ul><li>- [ ] Done</li></ul>|40|[Inna and Choose Options](http://codeforces.com/problemset/problem/400/A)|Codeforces|2|\n|<ul><li>- [ ] Done</li></ul>|41|[Squares](http://codeforces.com/problemset/problem/263/B)|Codeforces|2|\n|<ul><li>- [ ] Done</li></ul>|42|[Postcards and photos](http://codeforces.com/problemset/problem/137/A)|Codeforces|2|\n|<ul><li>- [ ] Done</li></ul>|43|[Little Elephant and Magic Square](http://codeforces.com/problemset/problem/259/B)|Codeforces|2|\n|<ul><li>- [ ] Done</li></ul>|44|[Lucky Ticket](http://codeforces.com/problemset/problem/146/A)|Codeforces|2|\n|<ul><li>- [ ] Done</li></ul>|45|[Trace](http://codeforces.com/problemset/problem/157/B)|Codeforces|2|\n|<ul><li>- [ ] Done</li></ul>|46|[Sereja and Algorithm ](http://codeforces.com/problemset/problem/367/A)|Codeforces|3|\n|<ul><li>- [ ] Done</li></ul>|47|[Tiling with Hexagons](http://codeforces.com/problemset/problem/216/A)|Codeforces|3|\n|<ul><li>- [ ] Done</li></ul>|48|[Rook, Bishop and King](http://codeforces.com/problemset/problem/370/A)|Codeforces|3|\n|<ul><li>- [ ] Done</li></ul>|49|[Megacity](http://codeforces.com/problemset/problem/424/B)|Codeforces|3|\n|<ul><li>- [ ] Done</li></ul>|50|[Watchmen](http://codeforces.com/problemset/problem/650/A)|Codeforces|3|\n|<ul><li>- [ ] Done</li></ul>|51|[Dorm Water Supply](http://codeforces.com/problemset/problem/107/A)|Codeforces|3|\n|<ul><li>- [ ] Done</li></ul>|52|[MUH and Sticks](http://codeforces.com/problemset/problem/471/A)|Codeforces|3|\n|<ul><li>- [ ] Done</li></ul>|53|[Vitaliy and Pie](http://codeforces.com/problemset/problem/525/A)|Codeforces|3|\n|<ul><li>- [ ] Done</li></ul>|54|[Maxim and Discounts](http://codeforces.com/problemset/problem/261/A)|Codeforces|3|\n|<ul><li>- [ ] Done</li></ul>|55|[Eugeny and Play List](http://codeforces.com/problemset/problem/302/B)|Codeforces|3|\n|<ul><li>- [ ] Done</li></ul>|56|[Code Parsing](http://codeforces.com/problemset/problem/255/B)|Codeforces|3|\n|<ul><li>- [ ] Done</li></ul>|57|[Unary](http://codeforces.com/problemset/problem/133/B)|Codeforces|3|\n|<ul><li>- [ ] Done</li></ul>|58|[Alternative Thinking](http://codeforces.com/problemset/problem/603/A)|Codeforces|3|\n|<ul><li>- [ ] Done</li></ul>|59|[Milking cows](http://codeforces.com/problemset/problem/383/A)|Codeforces|3|\n|<ul><li>- [ ] Done</li></ul>|60|[Little Elephant and Numbers](http://codeforces.com/problemset/problem/221/B)|Codeforces|3|\n|<ul><li>- [ ] Done</li></ul>|61|[Canvas Frames](http://codeforces.com/problemset/problem/127/B)|Codeforces|3|\n|<ul><li>- [ ] Done</li></ul>|62|[Binary Number](http://codeforces.com/problemset/problem/92/B)|Codeforces|3|\n|<ul><li>- [ ] Done</li></ul>|63|[Domino Effect](http://codeforces.com/problemset/problem/405/B)|Codeforces|3|\n|<ul><li>- [ ] Done</li></ul>|64|[Valuable Resources](http://codeforces.com/problemset/problem/485/B)|Codeforces|3|\n|<ul><li>- [ ] Done</li></ul>|65|[Bear and Elections](http://codeforces.com/problemset/problem/574/A)|Codeforces|3|\n|<ul><li>- [ ] Done</li></ul>|66|[Art Union](http://codeforces.com/problemset/problem/416/B)|Codeforces|3|\n|<ul><li>- [ ] Done</li></ul>|67|[Digital Counter](http://codeforces.com/problemset/problem/495/A)|Codeforces|3|\n|<ul><li>- [ ] Done</li></ul>|68|[Ohana Cleans Up](http://codeforces.com/problemset/problem/554/B)|Codeforces|3|\n|<ul><li>- [ ] Done</li></ul>|69|[Vasya and Football](http://codeforces.com/problemset/problem/493/A)|Codeforces|3|\n|<ul><li>- [ ] Done</li></ul>|70|[Chat Online](http://codeforces.com/problemset/problem/469/B)|Codeforces|3|\n|<ul><li>- [ ] Done</li></ul>|71|[Ksenia and Pan Scales](http://codeforces.com/problemset/problem/382/A)|Codeforces|3|\n|<ul><li>- [ ] Done</li></ul>|72|[Bear and Poker](http://codeforces.com/problemset/problem/573/A)|Codeforces|3|\n|<ul><li>- [ ] Done</li></ul>|73|[Whose sentence is it?](http://codeforces.com/problemset/problem/312/A)|Codeforces|3|\n|<ul><li>- [ ] Done</li></ul>|74|[Vasya and Petya's Game](http://codeforces.com/problemset/problem/576/A)|Codeforces|3|\n|<ul><li>- [ ] Done</li></ul>|75|[Good Number](http://codeforces.com/problemset/problem/365/A)|Codeforces|3|\n|<ul><li>- [ ] Done</li></ul>|76|[Permutation](http://codeforces.com/problemset/problem/359/B)|Codeforces|3|\n|<ul><li>- [ ] Done</li></ul>|77|[Replacement](http://codeforces.com/problemset/problem/135/A)|Codeforces|3|\n|<ul><li>- [ ] Done</li></ul>|78|[Mashmokh and Numbers](http://codeforces.com/problemset/problem/414/A)|Codeforces|3|\n|<ul><li>- [ ] Done</li></ul>|79|[Football Kit](http://codeforces.com/problemset/problem/432/B)|Codeforces|3|\n|<ul><li>- [ ] Done</li></ul>|80|[The Wall](http://codeforces.com/problemset/problem/340/A)|Codeforces|3|\n|<ul><li>- [ ] Done</li></ul>|81|[Cifera](http://codeforces.com/problemset/problem/114/A)|Codeforces|3|\n|<ul><li>- [ ] Done</li></ul>|82|[Polo the Penguin and Strings](http://codeforces.com/problemset/problem/288/A)|Codeforces|3|\n|<ul><li>- [ ] Done</li></ul>|83|[Fox and Number Game](http://codeforces.com/problemset/problem/389/A)|Codeforces|3|\n|<ul><li>- [ ] Done</li></ul>|84|[A and B and Team Training](http://codeforces.com/problemset/problem/519/C)|Codeforces|3|\n|<ul><li>- [ ] Done</li></ul>|85|[Drazil and Factorial](http://codeforces.com/problemset/problem/515/C)|Codeforces|3|\n|<ul><li>- [ ] Done</li></ul>|86|[Sereja and Stairs](http://codeforces.com/problemset/problem/381/B)|Codeforces|3|\n|<ul><li>- [ ] Done</li></ul>|87|[Plant](http://codeforces.com/problemset/problem/185/A)|Codeforces|3|\n|<ul><li>- [ ] Done</li></ul>|88|[A and B and Compilation Errors](http://codeforces.com/problemset/problem/519/B)|Codeforces|3|\n|<ul><li>- [ ] Done</li></ul>|89|[Students and Shoelaces](http://codeforces.com/problemset/problem/129/B)|Codeforces|3|\n|<ul><li>- [ ] Done</li></ul>|90|[The Child and Homework](http://codeforces.com/problemset/problem/437/A)|Codeforces|3|\n|<ul><li>- [ ] Done</li></ul>|91|[Petya and Staircases](http://codeforces.com/problemset/problem/362/B)|Codeforces|3|\n|<ul><li>- [ ] Done</li></ul>|92|[Random Teams](http://codeforces.com/problemset/problem/478/B)|Codeforces|3|\n|<ul><li>- [ ] Done</li></ul>|93|[Devu, the Dumb Guy](http://codeforces.com/problemset/problem/439/B)|Codeforces|3|\n|<ul><li>- [ ] Done</li></ul>|94|[Lucky Conversion](http://codeforces.com/problemset/problem/145/A)|Codeforces|3|\n|<ul><li>- [ ] Done</li></ul>|95|[Misha and Changing Handles](http://codeforces.com/problemset/problem/501/B)|Codeforces|3|\n|<ul><li>- [ ] Done</li></ul>|96|[Bear and Strings](http://codeforces.com/problemset/problem/385/B)|Codeforces|3|\n|<ul><li>- [ ] Done</li></ul>|97|[Anton and currency you all know](http://codeforces.com/problemset/problem/508/B)|Codeforces|3|\n|<ul><li>- [ ] Done</li></ul>|98|[Strings of Power](http://codeforces.com/problemset/problem/318/B)|Codeforces|3|\n|<ul><li>- [ ] Done</li></ul>|99|[Fedor and New Game](http://codeforces.com/problemset/problem/467/B)|Codeforces|3|\n|<ul><li>- [ ] Done</li></ul>|100|[Xor-tree](http://codeforces.com/problemset/problem/429/A)|Codeforces|3|\n|<ul><li>- [ ] Done</li></ul>|101|[Prizes, Prizes, more Prizes](http://codeforces.com/problemset/problem/208/D)|Codeforces|3|\n|<ul><li>- [ ] Done</li></ul>|102|[Points and Segments (easy)](http://codeforces.com/problemset/problem/430/A)|Codeforces|4|\n|<ul><li>- [ ] Done</li></ul>|103|[24 Game](http://codeforces.com/problemset/problem/468/A)|Codeforces|4|\n|<ul><li>- [ ] Done</li></ul>|104|[Eight Point Sets](http://codeforces.com/problemset/problem/334/B)|Codeforces|4|\n|<ul><li>- [ ] Done</li></ul>|105|[Secret Combination](http://codeforces.com/problemset/problem/496/B)|Codeforces|4|\n|<ul><li>- [ ] Done</li></ul>|106|[Tavas and Karafs](http://codeforces.com/problemset/problem/535/C)|Codeforces|4|\n|<ul><li>- [ ] Done</li></ul>|107|[Burning Midnight Oil](http://codeforces.com/problemset/problem/165/B)|Codeforces|4|\n|<ul><li>- [ ] Done</li></ul>|108|[GCD Table](http://codeforces.com/problemset/problem/582/A)|Codeforces|4|\n|<ul><li>- [ ] Done</li></ul>|109|[Recycling Bottles](http://codeforces.com/problemset/problem/671/A)|Codeforces|4|\n|<ul><li>- [ ] Done</li></ul>|110|[Prime Swaps](http://codeforces.com/problemset/problem/432/C)|Codeforces|4|\n|<ul><li>- [ ] Done</li></ul>|111|[Win or Freeze](http://codeforces.com/problemset/problem/150/A)|Codeforces|4|\n|<ul><li>- [ ] Done</li></ul>|112|[Pythagorean Triples](http://codeforces.com/problemset/problem/707/C)|Codeforces|4|\n|<ul><li>- [ ] Done</li></ul>|113|[Inna and Huge Candy Matrix](http://codeforces.com/problemset/problem/400/C)|Codeforces|4|\n|<ul><li>- [ ] Done</li></ul>|114|[ZgukistringZ](http://codeforces.com/problemset/problem/551/B)|Codeforces|4|\n|<ul><li>- [ ] Done</li></ul>|115|[Vasily the Bear and Sequence](http://codeforces.com/problemset/problem/336/C)|Codeforces|4|\n|<ul><li>- [ ] Done</li></ul>|116|[Preparing Olympiad](http://codeforces.com/problemset/problem/550/B)|Codeforces|4|\n|<ul><li>- [ ] Done</li></ul>|117|[The Two Routes](http://codeforces.com/problemset/problem/601/A)|Codeforces|4|\n|<ul><li>- [ ] Done</li></ul>|118|[Queue](http://codeforces.com/problemset/problem/91/B)|Codeforces|4|\n|<ul><li>- [ ] Done</li></ul>|119|[Tree Construction](http://codeforces.com/problemset/problem/675/D)|Codeforces|4|\n|<ul><li>- [ ] Done</li></ul>|120|[Cardiogram](http://codeforces.com/problemset/problem/435/C)|Codeforces|4|\n|<ul><li>- [ ] Done</li></ul>|121|[Buns](http://codeforces.com/problemset/problem/106/C)|Codeforces|4|\n|<ul><li>- [ ] Done</li></ul>|122|[Guest From the Past](http://codeforces.com/problemset/problem/625/A)|Codeforces|4|\n|<ul><li>- [ ] Done</li></ul>|123|[Page Numbers](http://codeforces.com/problemset/problem/34/C)|Codeforces|4|\n|<ul><li>- [ ] Done</li></ul>|124|[Road Map](http://codeforces.com/problemset/problem/34/D)|Codeforces|4|\n|<ul><li>- [ ] Done</li></ul>|125|[Memory and De-Evolution](http://codeforces.com/problemset/problem/712/C)|Codeforces|4|\n|<ul><li>- [ ] Done</li></ul>|126|[Valera and Contest](http://codeforces.com/problemset/problem/369/B)|Codeforces|4|\n|<ul><li>- [ ] Done</li></ul>|127|[Chilly Willy](http://codeforces.com/problemset/problem/248/B)|Codeforces|4|\n|<ul><li>- [ ] Done</li></ul>|128|[Watering Flowers](http://codeforces.com/problemset/problem/617/C)|Codeforces|4|\n|<ul><li>- [ ] Done</li></ul>|129|[Hard problem](http://codeforces.com/problemset/problem/706/C)|Codeforces|4|\n|<ul><li>- [ ] Done</li></ul>|130|[Perfect Pair](http://codeforces.com/problemset/problem/317/A)|Codeforces|4|\n|<ul><li>- [ ] Done</li></ul>|131|[The Big Race](http://codeforces.com/problemset/problem/592/C)|Codeforces|4|\n|<ul><li>- [ ] Done</li></ul>|132|[Nearest Fraction](http://codeforces.com/problemset/problem/281/B)|Codeforces|4|\n|<ul><li>- [ ] Done</li></ul>|133|[MUH and Important Things](http://codeforces.com/problemset/problem/471/B)|Codeforces|4|\n|<ul><li>- [ ] Done</li></ul>|134|[Heap Operations](http://codeforces.com/problemset/problem/681/C)|Codeforces|4|\n|<ul><li>- [ ] Done</li></ul>|135|[Gerald's Hexagon](http://codeforces.com/problemset/problem/559/A)|Codeforces|4|\n|<ul><li>- [ ] Done</li></ul>|136|[Guess a number!](http://codeforces.com/problemset/problem/416/A)|Codeforces|4|\n|<ul><li>- [ ] Done</li></ul>|137|[Coloring Trees](http://codeforces.com/problemset/problem/711/C)|Codeforces|4|\n|<ul><li>- [ ] Done</li></ul>|138|[More Cowbell](http://codeforces.com/problemset/problem/604/B)|Codeforces|4|\n|<ul><li>- [ ] Done</li></ul>|139|[Vasiliy's Multiset](http://codeforces.com/problemset/problem/706/D)|Codeforces|4|\n|<ul><li>- [ ] Done</li></ul>|140|[The Child and Set](http://codeforces.com/problemset/problem/437/B)|Codeforces|4|\n|<ul><li>- [ ] Done</li></ul>|141|[OR in Matrix](http://codeforces.com/problemset/problem/486/B)|Codeforces|4|\n|<ul><li>- [ ] Done</li></ul>|142|[Two Heaps](http://codeforces.com/problemset/problem/353/B)|Codeforces|4|\n|<ul><li>- [ ] Done</li></ul>|143|[Pasha Maximizes](http://codeforces.com/problemset/problem/435/B)|Codeforces|4|\n|<ul><li>- [ ] Done</li></ul>|144|[Balls and Boxes](http://codeforces.com/problemset/problem/260/C)|Codeforces|4|\n|<ul><li>- [ ] Done</li></ul>|145|[Dima and Text Messages](http://codeforces.com/problemset/problem/358/B)|Codeforces|4|\n|<ul><li>- [ ] Done</li></ul>|146|[Terse princess](http://codeforces.com/problemset/problem/148/C)|Codeforces|4|\n|<ul><li>- [ ] Done</li></ul>|147|[Primes on Interval](http://codeforces.com/problemset/problem/237/C)|Codeforces|4|\n|<ul><li>- [ ] Done</li></ul>|148|[Cows and Primitive Roots](http://codeforces.com/problemset/problem/284/A)|Codeforces|4|\n|<ul><li>- [ ] Done</li></ul>|149|[Anagram Search](http://codeforces.com/problemset/problem/144/C)|Codeforces|4|\n|<ul><li>- [ ] Done</li></ul>|150|[Photographer](http://codeforces.com/problemset/problem/203/C)|Codeforces|4|\n|<ul><li>- [ ] Done</li></ul>|151|[Magic Box](http://codeforces.com/problemset/problem/231/D)|Codeforces|4|\n|<ul><li>- [ ] Done</li></ul>|152|[Bear and Three Musketeers](http://codeforces.com/problemset/problem/574/B)|Codeforces|4|\n|<ul><li>- [ ] Done</li></ul>|153|[Gerald is into Art](http://codeforces.com/problemset/problem/560/B)|Codeforces|4|\n|<ul><li>- [ ] Done</li></ul>|154|[Alice and Bob](http://codeforces.com/problemset/problem/346/A)|Codeforces|4|\n|<ul><li>- [ ] Done</li></ul>|155|[Kefa and Company](http://codeforces.com/problemset/problem/580/B)|Codeforces|4|\n|<ul><li>- [ ] Done</li></ul>|156|[Queue](http://codeforces.com/problemset/problem/545/D)|Codeforces|4|\n|<ul><li>- [ ] Done</li></ul>|157|[Magic Formulas](http://codeforces.com/problemset/problem/424/C)|Codeforces|4|\n|<ul><li>- [ ] Done</li></ul>|158|[Beauty Pageant](http://codeforces.com/problemset/problem/246/C)|Codeforces|4|\n|<ul><li>- [ ] Done</li></ul>|159|[Non-square Equation](http://codeforces.com/problemset/problem/233/B)|Codeforces|4|\n|<ul><li>- [ ] Done</li></ul>|160|[Undoubtedly Lucky Numbers](http://codeforces.com/problemset/problem/244/B)|Codeforces|4|\n|<ul><li>- [ ] Done</li></ul>|161|[Cthulhu](http://codeforces.com/problemset/problem/103/B)|Codeforces|4|\n|<ul><li>- [ ] Done</li></ul>|162|[Woodcutters](http://codeforces.com/problemset/problem/545/C)|Codeforces|4|\n|<ul><li>- [ ] Done</li></ul>|163|[Han Solo and Lazer Gun](http://codeforces.com/problemset/problem/514/B)|Codeforces|4|\n|<ul><li>- [ ] Done</li></ul>|164|[Approximating a Constant Range](http://codeforces.com/problemset/problem/602/B)|Codeforces|4|\n|<ul><li>- [ ] Done</li></ul>|165|[MUH and House of Cards](http://codeforces.com/problemset/problem/471/C)|Codeforces|4|\n|<ul><li>- [ ] Done</li></ul>|166|[Pasha and String](http://codeforces.com/problemset/problem/525/B)|Codeforces|4|\n|<ul><li>- [ ] Done</li></ul>|167|[Kefa and Park](http://codeforces.com/problemset/problem/580/C)|Codeforces|4|\n|<ul><li>- [ ] Done</li></ul>|168|[Find Pair](http://codeforces.com/problemset/problem/160/C)|Codeforces|4|\n|<ul><li>- [ ] Done</li></ul>|169|[Vasya and Wrestling](http://codeforces.com/problemset/problem/493/B)|Codeforces|4|\n|<ul><li>- [ ] Done</li></ul>|170|[k-Multiple Free Set](http://codeforces.com/problemset/problem/274/A)|Codeforces|4|\n|<ul><li>- [ ] Done</li></ul>|171|[Dima and Sequence](http://codeforces.com/problemset/problem/272/B)|Codeforces|4|\n|<ul><li>- [ ] Done</li></ul>|172|[Dreamoon and Sets](http://codeforces.com/problemset/problem/476/D)|Codeforces|4|\n|<ul><li>- [ ] Done</li></ul>|173|[Pasha and Tea](http://codeforces.com/problemset/problem/557/B)|Codeforces|4|\n|<ul><li>- [ ] Done</li></ul>|174|[Soldier and Badges](http://codeforces.com/problemset/problem/546/B)|Codeforces|4|\n|<ul><li>- [ ] Done</li></ul>|175|[Ilya and Sticks](http://codeforces.com/problemset/problem/525/C)|Codeforces|4|\n|<ul><li>- [ ] Done</li></ul>|176|[Bits](http://codeforces.com/problemset/problem/484/A)|Codeforces|4|\n|<ul><li>- [ ] Done</li></ul>|177|[History](http://codeforces.com/problemset/problem/137/C)|Codeforces|4|\n|<ul><li>- [ ] Done</li></ul>|178|[Division into Teams](http://codeforces.com/problemset/problem/149/C)|Codeforces|4|\n|<ul><li>- [ ] Done</li></ul>|179|[Rational Resistance](http://codeforces.com/problemset/problem/343/A)|Codeforces|4|\n|<ul><li>- [ ] Done</li></ul>|180|[Quiz](http://codeforces.com/problemset/problem/337/C)|Codeforces|4|\n|<ul><li>- [ ] Done</li></ul>|181|[Guess Your Way Out!](http://codeforces.com/problemset/problem/507/C)|Codeforces|4|\n|<ul><li>- [ ] Done</li></ul>|182|[Amr and Pins](http://codeforces.com/problemset/problem/507/B)|Codeforces|4|\n|<ul><li>- [ ] Done</li></ul>|183|[Dreamoon and Sums](http://codeforces.com/problemset/problem/476/C)|Codeforces|4|\n|<ul><li>- [ ] Done</li></ul>|184|[DZY Loves Chemistry](http://codeforces.com/problemset/problem/445/B)|Codeforces|4|\n|<ul><li>- [ ] Done</li></ul>|185|[Two Substrings](http://codeforces.com/problemset/problem/550/A)|Codeforces|4|\n|<ul><li>- [ ] Done</li></ul>|186|[Dima and Lisa](http://codeforces.com/problemset/problem/584/D)|Codeforces|4|\n|<ul><li>- [ ] Done</li></ul>|187|[Soldier and Cards](http://codeforces.com/problemset/problem/546/C)|Codeforces|4|\n|<ul><li>- [ ] Done</li></ul>|188|[Replacement](http://codeforces.com/problemset/problem/570/C)|Codeforces|4|\n|<ul><li>- [ ] Done</li></ul>|189|[Alyona and Strings](http://codeforces.com/problemset/problem/682/D)|Codeforces|5|\n|<ul><li>- [ ] Done</li></ul>|190|[Journey](http://codeforces.com/problemset/problem/721/C)|Codeforces|5|\n|<ul><li>- [ ] Done</li></ul>|191|[Money Transfers](http://codeforces.com/problemset/problem/675/C)|Codeforces|5|\n|<ul><li>- [ ] Done</li></ul>|192|[Babaei and Birthday Cake](http://codeforces.com/problemset/problem/629/D)|Codeforces|5|\n|<ul><li>- [ ] Done</li></ul>|193|[Paths and Trees](http://codeforces.com/problemset/problem/545/E)|Codeforces|5|\n|<ul><li>- [ ] Done</li></ul>|194|[Vanya and Triangles](http://codeforces.com/problemset/problem/552/D)|Codeforces|5|\n|<ul><li>- [ ] Done</li></ul>|195|[Candy Boxes](http://codeforces.com/problemset/problem/488/B)|Codeforces|5|\n|<ul><li>- [ ] Done</li></ul>|196|[Cycle in Graph](http://codeforces.com/problemset/problem/263/D)|Codeforces|5|\n|<ul><li>- [ ] Done</li></ul>|197|[Amr and Chemistry](http://codeforces.com/problemset/problem/558/C)|Codeforces|5|\n|<ul><li>- [ ] Done</li></ul>|198|[Arthur and Table](http://codeforces.com/problemset/problem/557/C)|Codeforces|5|\n|<ul><li>- [ ] Done</li></ul>|199|[Kefa and Dishes](http://codeforces.com/problemset/problem/580/D)|Codeforces|5|\n|<ul><li>- [ ] Done</li></ul>|200|[Modulo Sum](http://codeforces.com/problemset/problem/577/B)|Codeforces|5|\n"
  },
  {
    "path": "ladders/26. 1600 <= Codeforces Rating <= 1699 (Extra)/README.md",
    "content": "# Ladder Name: 26 - 1600 <= Codeforces Rating <= 1699 (Extra)\n## Description\n Extra problems for users satisfying this condition\n## Difficulty Level: 4\n\n| Checkbox | ID  | Problem Name | Online Judge | Difficulty |\n|---|:---:|:---:|---|---|\n|<ul><li>- [ ] Done</li></ul>|1|[Colorful Stones (Simplified Edition)](http://codeforces.com/problemset/problem/265/A)|Codeforces|1|\n|<ul><li>- [ ] Done</li></ul>|2|[Rewards](http://codeforces.com/problemset/problem/448/A)|Codeforces|1|\n|<ul><li>- [ ] Done</li></ul>|3|[Roma and Lucky Numbers](http://codeforces.com/problemset/problem/262/A)|Codeforces|1|\n|<ul><li>- [ ] Done</li></ul>|4|[Soroban](http://codeforces.com/problemset/problem/363/A)|Codeforces|1|\n|<ul><li>- [ ] Done</li></ul>|5|[Toy Army](http://codeforces.com/problemset/problem/84/A)|Codeforces|1|\n|<ul><li>- [ ] Done</li></ul>|6|[Greg's Workout](http://codeforces.com/problemset/problem/255/A)|Codeforces|1|\n|<ul><li>- [ ] Done</li></ul>|7|[George and Accommodation](http://codeforces.com/problemset/problem/467/A)|Codeforces|1|\n|<ul><li>- [ ] Done</li></ul>|8|[Case of the Zeros and Ones](http://codeforces.com/problemset/problem/556/A)|Codeforces|2|\n|<ul><li>- [ ] Done</li></ul>|9|[Table](http://codeforces.com/problemset/problem/359/A)|Codeforces|2|\n|<ul><li>- [ ] Done</li></ul>|10|[Cows and Poker Game](http://codeforces.com/problemset/problem/284/B)|Codeforces|2|\n|<ul><li>- [ ] Done</li></ul>|11|[Drazil and Date](http://codeforces.com/problemset/problem/515/A)|Codeforces|2|\n|<ul><li>- [ ] Done</li></ul>|12|[Exams](http://codeforces.com/problemset/problem/194/A)|Codeforces|2|\n|<ul><li>- [ ] Done</li></ul>|13|[Sinking Ship](http://codeforces.com/problemset/problem/63/A)|Codeforces|2|\n|<ul><li>- [ ] Done</li></ul>|14|[Sereja and Coat Rack](http://codeforces.com/problemset/problem/368/A)|Codeforces|2|\n|<ul><li>- [ ] Done</li></ul>|15|[Worms Evolution](http://codeforces.com/problemset/problem/31/A)|Codeforces|2|\n|<ul><li>- [ ] Done</li></ul>|16|[Lecture](http://codeforces.com/problemset/problem/499/B)|Codeforces|2|\n|<ul><li>- [ ] Done</li></ul>|17|[Valera and Antique Items](http://codeforces.com/problemset/problem/441/A)|Codeforces|2|\n|<ul><li>- [ ] Done</li></ul>|18|[Game With Sticks](http://codeforces.com/problemset/problem/451/A)|Codeforces|2|\n|<ul><li>- [ ] Done</li></ul>|19|[Squares](http://codeforces.com/problemset/problem/263/B)|Codeforces|2|\n|<ul><li>- [ ] Done</li></ul>|20|[Trace](http://codeforces.com/problemset/problem/157/B)|Codeforces|2|\n|<ul><li>- [ ] Done</li></ul>|21|[Little Frog](http://codeforces.com/problemset/problem/53/C)|Codeforces|2|\n|<ul><li>- [ ] Done</li></ul>|22|[Valera and Plates](http://codeforces.com/problemset/problem/369/A)|Codeforces|2|\n|<ul><li>- [ ] Done</li></ul>|23|[Calculating Function](http://codeforces.com/problemset/problem/486/A)|Codeforces|2|\n|<ul><li>- [ ] Done</li></ul>|24|[Sereja and Algorithm ](http://codeforces.com/problemset/problem/367/A)|Codeforces|3|\n|<ul><li>- [ ] Done</li></ul>|25|[Chat Online](http://codeforces.com/problemset/problem/469/B)|Codeforces|3|\n|<ul><li>- [ ] Done</li></ul>|26|[Domino Effect](http://codeforces.com/problemset/problem/405/B)|Codeforces|3|\n|<ul><li>- [ ] Done</li></ul>|27|[Good Number](http://codeforces.com/problemset/problem/365/A)|Codeforces|3|\n|<ul><li>- [ ] Done</li></ul>|28|[Lucky Permutation](http://codeforces.com/problemset/problem/286/A)|Codeforces|3|\n|<ul><li>- [ ] Done</li></ul>|29|[Fox and Number Game](http://codeforces.com/problemset/problem/389/A)|Codeforces|3|\n|<ul><li>- [ ] Done</li></ul>|30|[Magical Array](http://codeforces.com/problemset/problem/83/A)|Codeforces|3|\n|<ul><li>- [ ] Done</li></ul>|31|[Replacement](http://codeforces.com/problemset/problem/135/A)|Codeforces|3|\n|<ul><li>- [ ] Done</li></ul>|32|[Drazil and Factorial](http://codeforces.com/problemset/problem/515/C)|Codeforces|3|\n|<ul><li>- [ ] Done</li></ul>|33|[Bear and Strings](http://codeforces.com/problemset/problem/385/B)|Codeforces|3|\n|<ul><li>- [ ] Done</li></ul>|34|[The Child and Homework](http://codeforces.com/problemset/problem/437/A)|Codeforces|3|\n|<ul><li>- [ ] Done</li></ul>|35|[Dorm Water Supply](http://codeforces.com/problemset/problem/107/A)|Codeforces|3|\n|<ul><li>- [ ] Done</li></ul>|36|[Misha and Changing Handles](http://codeforces.com/problemset/problem/501/B)|Codeforces|3|\n|<ul><li>- [ ] Done</li></ul>|37|[Maxim and Discounts](http://codeforces.com/problemset/problem/261/A)|Codeforces|3|\n|<ul><li>- [ ] Done</li></ul>|38|[Permutation](http://codeforces.com/problemset/problem/359/B)|Codeforces|3|\n|<ul><li>- [ ] Done</li></ul>|39|[Tavas and SaDDas](http://codeforces.com/problemset/problem/535/B)|Codeforces|3|\n|<ul><li>- [ ] Done</li></ul>|40|[Levko and Permutation](http://codeforces.com/problemset/problem/361/B)|Codeforces|3|\n|<ul><li>- [ ] Done</li></ul>|41|[Testing Pants for Sadness](http://codeforces.com/problemset/problem/103/A)|Codeforces|3|\n|<ul><li>- [ ] Done</li></ul>|42|[Multithreading](http://codeforces.com/problemset/problem/270/B)|Codeforces|3|\n|<ul><li>- [ ] Done</li></ul>|43|[The Wall](http://codeforces.com/problemset/problem/340/A)|Codeforces|3|\n|<ul><li>- [ ] Done</li></ul>|44|[Milking cows](http://codeforces.com/problemset/problem/383/A)|Codeforces|3|\n|<ul><li>- [ ] Done</li></ul>|45|[MUH and Sticks](http://codeforces.com/problemset/problem/471/A)|Codeforces|3|\n|<ul><li>- [ ] Done</li></ul>|46|[Anton and currency you all know](http://codeforces.com/problemset/problem/508/B)|Codeforces|3|\n|<ul><li>- [ ] Done</li></ul>|47|[Email address](http://codeforces.com/problemset/problem/41/C)|Codeforces|3|\n|<ul><li>- [ ] Done</li></ul>|48|[Little Xor](http://codeforces.com/problemset/problem/252/A)|Codeforces|3|\n|<ul><li>- [ ] Done</li></ul>|49|[Strings of Power](http://codeforces.com/problemset/problem/318/B)|Codeforces|3|\n|<ul><li>- [ ] Done</li></ul>|50|[Rook, Bishop and King](http://codeforces.com/problemset/problem/370/A)|Codeforces|3|\n|<ul><li>- [ ] Done</li></ul>|51|[Valuable Resources](http://codeforces.com/problemset/problem/485/B)|Codeforces|3|\n|<ul><li>- [ ] Done</li></ul>|52|[Art Union](http://codeforces.com/problemset/problem/416/B)|Codeforces|3|\n|<ul><li>- [ ] Done</li></ul>|53|[Ohana Cleans Up](http://codeforces.com/problemset/problem/554/B)|Codeforces|3|\n|<ul><li>- [ ] Done</li></ul>|54|[A and B and Compilation Errors](http://codeforces.com/problemset/problem/519/B)|Codeforces|3|\n|<ul><li>- [ ] Done</li></ul>|55|[Plant](http://codeforces.com/problemset/problem/185/A)|Codeforces|3|\n|<ul><li>- [ ] Done</li></ul>|56|[A and B and Team Training](http://codeforces.com/problemset/problem/519/C)|Codeforces|3|\n|<ul><li>- [ ] Done</li></ul>|57|[Fedor and New Game](http://codeforces.com/problemset/problem/467/B)|Codeforces|3|\n|<ul><li>- [ ] Done</li></ul>|58|[Xor-tree](http://codeforces.com/problemset/problem/429/A)|Codeforces|3|\n|<ul><li>- [ ] Done</li></ul>|59|[Prizes, Prizes, more Prizes](http://codeforces.com/problemset/problem/208/D)|Codeforces|3|\n|<ul><li>- [ ] Done</li></ul>|60|[Forming Teams](http://codeforces.com/problemset/problem/216/B)|Codeforces|4|\n|<ul><li>- [ ] Done</li></ul>|61|[Sysadmin Bob](http://codeforces.com/problemset/problem/31/B)|Codeforces|4|\n|<ul><li>- [ ] Done</li></ul>|62|[Perfect Pair](http://codeforces.com/problemset/problem/317/A)|Codeforces|4|\n|<ul><li>- [ ] Done</li></ul>|63|[The Two Routes](http://codeforces.com/problemset/problem/601/A)|Codeforces|4|\n|<ul><li>- [ ] Done</li></ul>|64|[Eight Point Sets](http://codeforces.com/problemset/problem/334/B)|Codeforces|4|\n|<ul><li>- [ ] Done</li></ul>|65|[Cloud of Hashtags](http://codeforces.com/problemset/problem/777/D)|Codeforces|4|\n|<ul><li>- [ ] Done</li></ul>|66|[Martian Dollar](http://codeforces.com/problemset/problem/41/B)|Codeforces|4|\n|<ul><li>- [ ] Done</li></ul>|67|[Guess Your Way Out!](http://codeforces.com/problemset/problem/507/C)|Codeforces|4|\n|<ul><li>- [ ] Done</li></ul>|68|[Alice and Bob](http://codeforces.com/problemset/problem/346/A)|Codeforces|4|\n|<ul><li>- [ ] Done</li></ul>|69|[STL](http://codeforces.com/problemset/problem/190/C)|Codeforces|4|\n|<ul><li>- [ ] Done</li></ul>|70|[Magical Boxes](http://codeforces.com/problemset/problem/269/A)|Codeforces|4|\n|<ul><li>- [ ] Done</li></ul>|71|[Replacement](http://codeforces.com/problemset/problem/570/C)|Codeforces|4|\n|<ul><li>- [ ] Done</li></ul>|72|[Tavas and Karafs](http://codeforces.com/problemset/problem/535/C)|Codeforces|4|\n|<ul><li>- [ ] Done</li></ul>|73|[Mike and Fun](http://codeforces.com/problemset/problem/548/B)|Codeforces|4|\n|<ul><li>- [ ] Done</li></ul>|74|[Marina and Vasya](http://codeforces.com/problemset/problem/584/C)|Codeforces|4|\n|<ul><li>- [ ] Done</li></ul>|75|[Fish Weight](http://codeforces.com/problemset/problem/297/B)|Codeforces|4|\n|<ul><li>- [ ] Done</li></ul>|76|[Dreamoon and Sets](http://codeforces.com/problemset/problem/476/D)|Codeforces|4|\n|<ul><li>- [ ] Done</li></ul>|77|[Alternating Current](http://codeforces.com/problemset/problem/343/B)|Codeforces|4|\n|<ul><li>- [ ] Done</li></ul>|78|[Olympiad](http://codeforces.com/problemset/problem/222/D)|Codeforces|4|\n|<ul><li>- [ ] Done</li></ul>|79|[Xenia and Spies](http://codeforces.com/problemset/problem/342/B)|Codeforces|4|\n|<ul><li>- [ ] Done</li></ul>|80|[Chilly Willy](http://codeforces.com/problemset/problem/248/B)|Codeforces|4|\n|<ul><li>- [ ] Done</li></ul>|81|[Planets](http://codeforces.com/problemset/problem/229/B)|Codeforces|4|\n|<ul><li>- [ ] Done</li></ul>|82|[Queue](http://codeforces.com/problemset/problem/545/D)|Codeforces|4|\n|<ul><li>- [ ] Done</li></ul>|83|[Longtail Hedgehog](http://codeforces.com/problemset/problem/615/B)|Codeforces|4|\n|<ul><li>- [ ] Done</li></ul>|84|[Message](http://codeforces.com/problemset/problem/156/A)|Codeforces|4|\n|<ul><li>- [ ] Done</li></ul>|85|[Voting](http://codeforces.com/problemset/problem/749/C)|Codeforces|4|\n|<ul><li>- [ ] Done</li></ul>|86|[Polo the Penguin and Houses ](http://codeforces.com/problemset/problem/288/B)|Codeforces|4|\n|<ul><li>- [ ] Done</li></ul>|87|[Pasha and String](http://codeforces.com/problemset/problem/525/B)|Codeforces|4|\n|<ul><li>- [ ] Done</li></ul>|88|[Toy Sum](http://codeforces.com/problemset/problem/405/D)|Codeforces|4|\n|<ul><li>- [ ] Done</li></ul>|89|[Tree Construction](http://codeforces.com/problemset/problem/675/D)|Codeforces|4|\n|<ul><li>- [ ] Done</li></ul>|90|[Report](http://codeforces.com/problemset/problem/631/C)|Codeforces|4|\n|<ul><li>- [ ] Done</li></ul>|91|[Bear and Blocks](http://codeforces.com/problemset/problem/573/B)|Codeforces|4|\n|<ul><li>- [ ] Done</li></ul>|92|[Dima and Two Sequences](http://codeforces.com/problemset/problem/272/D)|Codeforces|4|\n|<ul><li>- [ ] Done</li></ul>|93|[Trees in a Row](http://codeforces.com/problemset/problem/402/B)|Codeforces|4|\n|<ul><li>- [ ] Done</li></ul>|94|[Terse princess](http://codeforces.com/problemset/problem/148/C)|Codeforces|4|\n|<ul><li>- [ ] Done</li></ul>|95|[Chloe and pleasant prizes](http://codeforces.com/problemset/problem/743/D)|Codeforces|4|\n|<ul><li>- [ ] Done</li></ul>|96|[GCD Table](http://codeforces.com/problemset/problem/582/A)|Codeforces|4|\n|<ul><li>- [ ] Done</li></ul>|97|[Prime Swaps](http://codeforces.com/problemset/problem/432/C)|Codeforces|4|\n|<ul><li>- [ ] Done</li></ul>|98|[Soldier and Cards](http://codeforces.com/problemset/problem/546/C)|Codeforces|4|\n|<ul><li>- [ ] Done</li></ul>|99|[DNA Alignment](http://codeforces.com/problemset/problem/520/C)|Codeforces|4|\n|<ul><li>- [ ] Done</li></ul>|100|[Sereja and Swaps](http://codeforces.com/problemset/problem/425/A)|Codeforces|4|\n|<ul><li>- [ ] Done</li></ul>|101|[The Big Race](http://codeforces.com/problemset/problem/592/C)|Codeforces|4|\n|<ul><li>- [ ] Done</li></ul>|102|[Image Preview](http://codeforces.com/problemset/problem/650/B)|Codeforces|4|\n|<ul><li>- [ ] Done</li></ul>|103|[Find Pair](http://codeforces.com/problemset/problem/160/C)|Codeforces|4|\n|<ul><li>- [ ] Done</li></ul>|104|[Mike and Chocolate Thieves](http://codeforces.com/problemset/problem/689/C)|Codeforces|4|\n|<ul><li>- [ ] Done</li></ul>|105|[Petya and Inequiations](http://codeforces.com/problemset/problem/111/A)|Codeforces|4|\n|<ul><li>- [ ] Done</li></ul>|106|[Non-Secret Cypher](http://codeforces.com/problemset/problem/190/D)|Codeforces|4|\n|<ul><li>- [ ] Done</li></ul>|107|[Division into Teams](http://codeforces.com/problemset/problem/149/C)|Codeforces|4|\n|<ul><li>- [ ] Done</li></ul>|108|[Predict Outcome of the Game](http://codeforces.com/problemset/problem/451/C)|Codeforces|4|\n|<ul><li>- [ ] Done</li></ul>|109|[The Child and Zoo](http://codeforces.com/problemset/problem/437/D)|Codeforces|4|\n|<ul><li>- [ ] Done</li></ul>|110|[Nearest Fraction](http://codeforces.com/problemset/problem/281/B)|Codeforces|4|\n|<ul><li>- [ ] Done</li></ul>|111|[Purification](http://codeforces.com/problemset/problem/329/A)|Codeforces|4|\n|<ul><li>- [ ] Done</li></ul>|112|[Dynasty Puzzles](http://codeforces.com/problemset/problem/191/A)|Codeforces|4|\n|<ul><li>- [ ] Done</li></ul>|113|[Secret Combination](http://codeforces.com/problemset/problem/496/B)|Codeforces|4|\n|<ul><li>- [ ] Done</li></ul>|114|[Divisible by Seven](http://codeforces.com/problemset/problem/375/A)|Codeforces|4|\n|<ul><li>- [ ] Done</li></ul>|115|[Burning Midnight Oil](http://codeforces.com/problemset/problem/165/B)|Codeforces|4|\n|<ul><li>- [ ] Done</li></ul>|116|[School Marks](http://codeforces.com/problemset/problem/540/B)|Codeforces|4|\n|<ul><li>- [ ] Done</li></ul>|117|[Road Map](http://codeforces.com/problemset/problem/34/D)|Codeforces|4|\n|<ul><li>- [ ] Done</li></ul>|118|[Harmony Analysis](http://codeforces.com/problemset/problem/610/C)|Codeforces|4|\n|<ul><li>- [ ] Done</li></ul>|119|[Magic Formulas](http://codeforces.com/problemset/problem/424/C)|Codeforces|4|\n|<ul><li>- [ ] Done</li></ul>|120|[Pasha and Tea](http://codeforces.com/problemset/problem/557/B)|Codeforces|4|\n|<ul><li>- [ ] Done</li></ul>|121|[24 Game](http://codeforces.com/problemset/problem/468/A)|Codeforces|4|\n|<ul><li>- [ ] Done</li></ul>|122|[Basketball Team](http://codeforces.com/problemset/problem/107/B)|Codeforces|4|\n|<ul><li>- [ ] Done</li></ul>|123|[Heap Operations](http://codeforces.com/problemset/problem/681/C)|Codeforces|4|\n|<ul><li>- [ ] Done</li></ul>|124|[Rational Resistance](http://codeforces.com/problemset/problem/343/A)|Codeforces|4|\n|<ul><li>- [ ] Done</li></ul>|125|[Strange Addition](http://codeforces.com/problemset/problem/305/A)|Codeforces|4|\n|<ul><li>- [ ] Done</li></ul>|126|[Ivan and Powers of Two](http://codeforces.com/problemset/problem/305/C)|Codeforces|4|\n|<ul><li>- [ ] Done</li></ul>|127|[Beauty Pageant](http://codeforces.com/problemset/problem/246/C)|Codeforces|4|\n|<ul><li>- [ ] Done</li></ul>|128|[Modular Equations](http://codeforces.com/problemset/problem/495/B)|Codeforces|4|\n|<ul><li>- [ ] Done</li></ul>|129|[Quantity of Strings](http://codeforces.com/problemset/problem/150/B)|Codeforces|4|\n|<ul><li>- [ ] Done</li></ul>|130|[Gerald's Hexagon](http://codeforces.com/problemset/problem/559/A)|Codeforces|4|\n|<ul><li>- [ ] Done</li></ul>|131|[ZgukistringZ](http://codeforces.com/problemset/problem/551/B)|Codeforces|4|\n|<ul><li>- [ ] Done</li></ul>|132|[Non-square Equation](http://codeforces.com/problemset/problem/233/B)|Codeforces|4|\n|<ul><li>- [ ] Done</li></ul>|133|[Find Maximum](http://codeforces.com/problemset/problem/353/C)|Codeforces|4|\n|<ul><li>- [ ] Done</li></ul>|134|[Alyona and the Tree](http://codeforces.com/problemset/problem/682/C)|Codeforces|4|\n|<ul><li>- [ ] Done</li></ul>|135|[Newspaper Headline](http://codeforces.com/problemset/problem/91/A)|Codeforces|4|\n|<ul><li>- [ ] Done</li></ul>|136|[MUH and House of Cards](http://codeforces.com/problemset/problem/471/C)|Codeforces|4|\n|<ul><li>- [ ] Done</li></ul>|137|[Vasya and String](http://codeforces.com/problemset/problem/676/C)|Codeforces|4|\n|<ul><li>- [ ] Done</li></ul>|138|[Amr and Pins](http://codeforces.com/problemset/problem/507/B)|Codeforces|4|\n|<ul><li>- [ ] Done</li></ul>|139|[Buns](http://codeforces.com/problemset/problem/106/C)|Codeforces|4|\n|<ul><li>- [ ] Done</li></ul>|140|[Magic Five](http://codeforces.com/problemset/problem/327/C)|Codeforces|4|\n|<ul><li>- [ ] Done</li></ul>|141|[Cows and Primitive Roots](http://codeforces.com/problemset/problem/284/A)|Codeforces|4|\n|<ul><li>- [ ] Done</li></ul>|142|[Vasily the Bear and Sequence](http://codeforces.com/problemset/problem/336/C)|Codeforces|4|\n|<ul><li>- [ ] Done</li></ul>|143|[Preparing Olympiad](http://codeforces.com/problemset/problem/550/B)|Codeforces|4|\n|<ul><li>- [ ] Done</li></ul>|144|[Bear and Three Musketeers](http://codeforces.com/problemset/problem/574/B)|Codeforces|4|\n|<ul><li>- [ ] Done</li></ul>|145|[Undoubtedly Lucky Numbers](http://codeforces.com/problemset/problem/244/B)|Codeforces|4|\n|<ul><li>- [ ] Done</li></ul>|146|[Dreamoon and Sums](http://codeforces.com/problemset/problem/476/C)|Codeforces|4|\n|<ul><li>- [ ] Done</li></ul>|147|[Cthulhu](http://codeforces.com/problemset/problem/103/B)|Codeforces|4|\n|<ul><li>- [ ] Done</li></ul>|148|[Win or Freeze](http://codeforces.com/problemset/problem/150/A)|Codeforces|4|\n|<ul><li>- [ ] Done</li></ul>|149|[Quiz](http://codeforces.com/problemset/problem/337/C)|Codeforces|4|\n|<ul><li>- [ ] Done</li></ul>|150|[Anagram Search](http://codeforces.com/problemset/problem/144/C)|Codeforces|4|\n|<ul><li>- [ ] Done</li></ul>|151|[Two Substrings](http://codeforces.com/problemset/problem/550/A)|Codeforces|4|\n|<ul><li>- [ ] Done</li></ul>|152|[Subsegments](http://codeforces.com/problemset/problem/69/E)|Codeforces|4|\n|<ul><li>- [ ] Done</li></ul>|153|[History](http://codeforces.com/problemset/problem/137/C)|Codeforces|4|\n|<ul><li>- [ ] Done</li></ul>|154|[Primes on Interval](http://codeforces.com/problemset/problem/237/C)|Codeforces|4|\n|<ul><li>- [ ] Done</li></ul>|155|[The Child and Set](http://codeforces.com/problemset/problem/437/B)|Codeforces|4|\n|<ul><li>- [ ] Done</li></ul>|156|[OR in Matrix](http://codeforces.com/problemset/problem/486/B)|Codeforces|4|\n|<ul><li>- [ ] Done</li></ul>|157|[DZY Loves Chemistry](http://codeforces.com/problemset/problem/445/B)|Codeforces|4|\n|<ul><li>- [ ] Done</li></ul>|158|[Vasiliy's Multiset](http://codeforces.com/problemset/problem/706/D)|Codeforces|4|\n|<ul><li>- [ ] Done</li></ul>|159|[Bits](http://codeforces.com/problemset/problem/484/A)|Codeforces|4|\n|<ul><li>- [ ] Done</li></ul>|160|[Ilya and Sticks](http://codeforces.com/problemset/problem/525/C)|Codeforces|4|\n|<ul><li>- [ ] Done</li></ul>|161|[Dima and Lisa](http://codeforces.com/problemset/problem/584/D)|Codeforces|4|\n|<ul><li>- [ ] Done</li></ul>|162|[Kefa and Park](http://codeforces.com/problemset/problem/580/C)|Codeforces|4|\n|<ul><li>- [ ] Done</li></ul>|163|[Queue](http://codeforces.com/problemset/problem/91/B)|Codeforces|4|\n|<ul><li>- [ ] Done</li></ul>|164|[Woodcutters](http://codeforces.com/problemset/problem/545/C)|Codeforces|4|\n|<ul><li>- [ ] Done</li></ul>|165|[Biridian Forest](http://codeforces.com/problemset/problem/329/B)|Codeforces|4|\n|<ul><li>- [ ] Done</li></ul>|166|[k-Multiple Free Set](http://codeforces.com/problemset/problem/274/A)|Codeforces|4|\n|<ul><li>- [ ] Done</li></ul>|167|[Magic Box](http://codeforces.com/problemset/problem/231/D)|Codeforces|4|\n|<ul><li>- [ ] Done</li></ul>|168|[Alyona and Strings](http://codeforces.com/problemset/problem/682/D)|Codeforces|5|\n|<ul><li>- [ ] Done</li></ul>|169|[Dispute](http://codeforces.com/problemset/problem/242/D)|Codeforces|5|\n|<ul><li>- [ ] Done</li></ul>|170|[Volleyball](http://codeforces.com/problemset/problem/95/C)|Codeforces|5|\n|<ul><li>- [ ] Done</li></ul>|171|[Decoding Genome](http://codeforces.com/problemset/problem/222/E)|Codeforces|5|\n|<ul><li>- [ ] Done</li></ul>|172|[Running Track](http://codeforces.com/problemset/problem/615/C)|Codeforces|5|\n|<ul><li>- [ ] Done</li></ul>|173|[Police Station](http://codeforces.com/problemset/problem/208/C)|Codeforces|5|\n|<ul><li>- [ ] Done</li></ul>|174|[Money Transfers](http://codeforces.com/problemset/problem/675/C)|Codeforces|5|\n|<ul><li>- [ ] Done</li></ul>|175|[Mishka and Interesting sum](http://codeforces.com/problemset/problem/703/D)|Codeforces|5|\n|<ul><li>- [ ] Done</li></ul>|176|[Queue](http://codeforces.com/problemset/problem/353/D)|Codeforces|5|\n|<ul><li>- [ ] Done</li></ul>|177|[Directed Roads](http://codeforces.com/problemset/problem/711/D)|Codeforces|5|\n|<ul><li>- [ ] Done</li></ul>|178|[Spongebob and Squares](http://codeforces.com/problemset/problem/599/D)|Codeforces|5|\n|<ul><li>- [ ] Done</li></ul>|179|[Black and White Tree](http://codeforces.com/problemset/problem/260/D)|Codeforces|5|\n|<ul><li>- [ ] Done</li></ul>|180|[Ilya and Roads](http://codeforces.com/problemset/problem/313/D)|Codeforces|5|\n|<ul><li>- [ ] Done</li></ul>|181|[Babaei and Birthday Cake](http://codeforces.com/problemset/problem/629/D)|Codeforces|5|\n|<ul><li>- [ ] Done</li></ul>|182|[Block Tower](http://codeforces.com/problemset/problem/327/D)|Codeforces|5|\n|<ul><li>- [ ] Done</li></ul>|183|[Police Patrol](http://codeforces.com/problemset/problem/427/E)|Codeforces|5|\n|<ul><li>- [ ] Done</li></ul>|184|[Persistent Bookcase ](http://codeforces.com/problemset/problem/707/D)|Codeforces|5|\n|<ul><li>- [ ] Done</li></ul>|185|[Random Task](http://codeforces.com/problemset/problem/431/D)|Codeforces|5|\n|<ul><li>- [ ] Done</li></ul>|186|[Number With The Given Amount Of Divisors](http://codeforces.com/problemset/problem/27/E)|Codeforces|5|\n|<ul><li>- [ ] Done</li></ul>|187|[Cycle in Graph](http://codeforces.com/problemset/problem/263/D)|Codeforces|5|\n|<ul><li>- [ ] Done</li></ul>|188|[Circle of Numbers](http://codeforces.com/problemset/problem/263/C)|Codeforces|5|\n|<ul><li>- [ ] Done</li></ul>|189|[Fox And Jumping](http://codeforces.com/problemset/problem/510/D)|Codeforces|5|\n|<ul><li>- [ ] Done</li></ul>|190|[Vanya and Triangles](http://codeforces.com/problemset/problem/552/D)|Codeforces|5|\n|<ul><li>- [ ] Done</li></ul>|191|[Shaass and Lights](http://codeforces.com/problemset/problem/294/C)|Codeforces|5|\n|<ul><li>- [ ] Done</li></ul>|192|[Vitaly and Cycle](http://codeforces.com/problemset/problem/557/D)|Codeforces|5|\n|<ul><li>- [ ] Done</li></ul>|193|[Minesweeper 1D](http://codeforces.com/problemset/problem/404/D)|Codeforces|5|\n|<ul><li>- [ ] Done</li></ul>|194|[Modulo Sum](http://codeforces.com/problemset/problem/577/B)|Codeforces|5|\n|<ul><li>- [ ] Done</li></ul>|195|[Amr and Chemistry](http://codeforces.com/problemset/problem/558/C)|Codeforces|5|\n|<ul><li>- [ ] Done</li></ul>|196|[Arthur and Table](http://codeforces.com/problemset/problem/557/C)|Codeforces|5|\n|<ul><li>- [ ] Done</li></ul>|197|[Paths and Trees](http://codeforces.com/problemset/problem/545/E)|Codeforces|5|\n|<ul><li>- [ ] Done</li></ul>|198|[Kefa and Dishes](http://codeforces.com/problemset/problem/580/D)|Codeforces|5|\n|<ul><li>- [ ] Done</li></ul>|199|[Anya and Cubes](http://codeforces.com/problemset/problem/525/E)|Codeforces|6|\n|<ul><li>- [ ] Done</li></ul>|200|[Yet Another Number Game](http://codeforces.com/problemset/problem/282/D)|Codeforces|6|\n"
  },
  {
    "path": "ladders/27. 1700 <= Codeforces Rating <= 1799 (Extra)/README.md",
    "content": "# Ladder Name: 27 - 1700 <= Codeforces Rating <= 1799 (Extra)\n## Description\n Extra problems for users satisfying this condition\n## Difficulty Level: 4\n\n| Checkbox | ID  | Problem Name | Online Judge | Difficulty |\n|---|:---:|:---:|---|---|\n|<ul><li>- [ ] Done</li></ul>|1|[Circle Line](http://codeforces.com/problemset/problem/278/A)|Codeforces|1|\n|<ul><li>- [ ] Done</li></ul>|2|[Restoring Password](http://codeforces.com/problemset/problem/94/A)|Codeforces|1|\n|<ul><li>- [ ] Done</li></ul>|3|[Playing with Dice](http://codeforces.com/problemset/problem/378/A)|Codeforces|1|\n|<ul><li>- [ ] Done</li></ul>|4|[Colorful Stones (Simplified Edition)](http://codeforces.com/problemset/problem/265/A)|Codeforces|1|\n|<ul><li>- [ ] Done</li></ul>|5|[Roma and Lucky Numbers](http://codeforces.com/problemset/problem/262/A)|Codeforces|1|\n|<ul><li>- [ ] Done</li></ul>|6|[Kyoya and Photobooks](http://codeforces.com/problemset/problem/554/A)|Codeforces|1|\n|<ul><li>- [ ] Done</li></ul>|7|[Valera and X](http://codeforces.com/problemset/problem/404/A)|Codeforces|2|\n|<ul><li>- [ ] Done</li></ul>|8|[Game With Sticks](http://codeforces.com/problemset/problem/451/A)|Codeforces|2|\n|<ul><li>- [ ] Done</li></ul>|9|[Vasya and Digital Root](http://codeforces.com/problemset/problem/355/A)|Codeforces|2|\n|<ul><li>- [ ] Done</li></ul>|10|[Multiplication Table](http://codeforces.com/problemset/problem/577/A)|Codeforces|2|\n|<ul><li>- [ ] Done</li></ul>|11|[Calculating Function](http://codeforces.com/problemset/problem/486/A)|Codeforces|2|\n|<ul><li>- [ ] Done</li></ul>|12|[Valera and Antique Items](http://codeforces.com/problemset/problem/441/A)|Codeforces|2|\n|<ul><li>- [ ] Done</li></ul>|13|[Kefa and First Steps](http://codeforces.com/problemset/problem/580/A)|Codeforces|2|\n|<ul><li>- [ ] Done</li></ul>|14|[Toy Cars](http://codeforces.com/problemset/problem/545/A)|Codeforces|2|\n|<ul><li>- [ ] Done</li></ul>|15|[Joysticks](http://codeforces.com/problemset/problem/651/A)|Codeforces|2|\n|<ul><li>- [ ] Done</li></ul>|16|[Little Frog](http://codeforces.com/problemset/problem/53/C)|Codeforces|2|\n|<ul><li>- [ ] Done</li></ul>|17|[Sinking Ship](http://codeforces.com/problemset/problem/63/A)|Codeforces|2|\n|<ul><li>- [ ] Done</li></ul>|18|[Case of the Zeros and Ones](http://codeforces.com/problemset/problem/556/A)|Codeforces|2|\n|<ul><li>- [ ] Done</li></ul>|19|[Roadside Trees (Simplified Edition)](http://codeforces.com/problemset/problem/265/B)|Codeforces|2|\n|<ul><li>- [ ] Done</li></ul>|20|[Ciel and Dancing](http://codeforces.com/problemset/problem/322/A)|Codeforces|2|\n|<ul><li>- [ ] Done</li></ul>|21|[Currency System in Geraldion](http://codeforces.com/problemset/problem/560/A)|Codeforces|2|\n|<ul><li>- [ ] Done</li></ul>|22|[Prizes, Prizes, more Prizes](http://codeforces.com/problemset/problem/208/D)|Codeforces|3|\n|<ul><li>- [ ] Done</li></ul>|23|[Bear and Poker](http://codeforces.com/problemset/problem/573/A)|Codeforces|3|\n|<ul><li>- [ ] Done</li></ul>|24|[Fox and Number Game](http://codeforces.com/problemset/problem/389/A)|Codeforces|3|\n|<ul><li>- [ ] Done</li></ul>|25|[A and B and Team Training](http://codeforces.com/problemset/problem/519/C)|Codeforces|3|\n|<ul><li>- [ ] Done</li></ul>|26|[Misha and Changing Handles](http://codeforces.com/problemset/problem/501/B)|Codeforces|3|\n|<ul><li>- [ ] Done</li></ul>|27|[Cifera](http://codeforces.com/problemset/problem/114/A)|Codeforces|3|\n|<ul><li>- [ ] Done</li></ul>|28|[Lucky Tickets](http://codeforces.com/problemset/problem/43/C)|Codeforces|3|\n|<ul><li>- [ ] Done</li></ul>|29|[Bar](http://codeforces.com/problemset/problem/56/A)|Codeforces|3|\n|<ul><li>- [ ] Done</li></ul>|30|[Bear and Elections](http://codeforces.com/problemset/problem/574/A)|Codeforces|3|\n|<ul><li>- [ ] Done</li></ul>|31|[Lexicographically Maximum Subsequence](http://codeforces.com/problemset/problem/196/A)|Codeforces|3|\n|<ul><li>- [ ] Done</li></ul>|32|[Strings of Power](http://codeforces.com/problemset/problem/318/B)|Codeforces|3|\n|<ul><li>- [ ] Done</li></ul>|33|[Lucky Permutation Triple](http://codeforces.com/problemset/problem/303/A)|Codeforces|3|\n|<ul><li>- [ ] Done</li></ul>|34|[Good Number](http://codeforces.com/problemset/problem/365/A)|Codeforces|3|\n|<ul><li>- [ ] Done</li></ul>|35|[Case of Fake Numbers](http://codeforces.com/problemset/problem/556/B)|Codeforces|3|\n|<ul><li>- [ ] Done</li></ul>|36|[Art Union](http://codeforces.com/problemset/problem/416/B)|Codeforces|3|\n|<ul><li>- [ ] Done</li></ul>|37|[War of the Corporations](http://codeforces.com/problemset/problem/625/B)|Codeforces|3|\n|<ul><li>- [ ] Done</li></ul>|38|[Fortune Telling](http://codeforces.com/problemset/problem/59/B)|Codeforces|3|\n|<ul><li>- [ ] Done</li></ul>|39|[Sereja and Algorithm ](http://codeforces.com/problemset/problem/367/A)|Codeforces|3|\n|<ul><li>- [ ] Done</li></ul>|40|[Fedor and New Game](http://codeforces.com/problemset/problem/467/B)|Codeforces|3|\n|<ul><li>- [ ] Done</li></ul>|41|[Ohana Cleans Up](http://codeforces.com/problemset/problem/554/B)|Codeforces|3|\n|<ul><li>- [ ] Done</li></ul>|42|[Students and Shoelaces](http://codeforces.com/problemset/problem/129/B)|Codeforces|3|\n|<ul><li>- [ ] Done</li></ul>|43|[Xor-tree](http://codeforces.com/problemset/problem/429/A)|Codeforces|3|\n|<ul><li>- [ ] Done</li></ul>|44|[Maxim and Discounts](http://codeforces.com/problemset/problem/261/A)|Codeforces|3|\n|<ul><li>- [ ] Done</li></ul>|45|[Kyoya and Colored Balls](http://codeforces.com/problemset/problem/553/A)|Codeforces|3|\n|<ul><li>- [ ] Done</li></ul>|46|[Heap Operations](http://codeforces.com/problemset/problem/681/C)|Codeforces|4|\n|<ul><li>- [ ] Done</li></ul>|47|[Colliders](http://codeforces.com/problemset/problem/154/B)|Codeforces|4|\n|<ul><li>- [ ] Done</li></ul>|48|[Day at the Beach](http://codeforces.com/problemset/problem/599/C)|Codeforces|4|\n|<ul><li>- [ ] Done</li></ul>|49|[History](http://codeforces.com/problemset/problem/137/C)|Codeforces|4|\n|<ul><li>- [ ] Done</li></ul>|50|[Buns](http://codeforces.com/problemset/problem/106/C)|Codeforces|4|\n|<ul><li>- [ ] Done</li></ul>|51|[Sereja and Contest](http://codeforces.com/problemset/problem/314/A)|Codeforces|4|\n|<ul><li>- [ ] Done</li></ul>|52|[Division into Teams](http://codeforces.com/problemset/problem/149/C)|Codeforces|4|\n|<ul><li>- [ ] Done</li></ul>|53|[Dima and Two Sequences](http://codeforces.com/problemset/problem/272/D)|Codeforces|4|\n|<ul><li>- [ ] Done</li></ul>|54|[Marina and Vasya](http://codeforces.com/problemset/problem/584/C)|Codeforces|4|\n|<ul><li>- [ ] Done</li></ul>|55|[George and Number](http://codeforces.com/problemset/problem/387/C)|Codeforces|4|\n|<ul><li>- [ ] Done</li></ul>|56|[More Cowbell](http://codeforces.com/problemset/problem/604/B)|Codeforces|4|\n|<ul><li>- [ ] Done</li></ul>|57|[Approximating a Constant Range](http://codeforces.com/problemset/problem/602/B)|Codeforces|4|\n|<ul><li>- [ ] Done</li></ul>|58|[The Big Race](http://codeforces.com/problemset/problem/592/C)|Codeforces|4|\n|<ul><li>- [ ] Done</li></ul>|59|[Magic Formulas](http://codeforces.com/problemset/problem/424/C)|Codeforces|4|\n|<ul><li>- [ ] Done</li></ul>|60|[Polo the Penguin and XOR operation](http://codeforces.com/problemset/problem/288/C)|Codeforces|4|\n|<ul><li>- [ ] Done</li></ul>|61|[Gerald is into Art](http://codeforces.com/problemset/problem/560/B)|Codeforces|4|\n|<ul><li>- [ ] Done</li></ul>|62|[Alice and Bob](http://codeforces.com/problemset/problem/346/A)|Codeforces|4|\n|<ul><li>- [ ] Done</li></ul>|63|[Plate Game](http://codeforces.com/problemset/problem/197/A)|Codeforces|4|\n|<ul><li>- [ ] Done</li></ul>|64|[Tavas and Karafs](http://codeforces.com/problemset/problem/535/C)|Codeforces|4|\n|<ul><li>- [ ] Done</li></ul>|65|[Dima and Lisa](http://codeforces.com/problemset/problem/584/D)|Codeforces|4|\n|<ul><li>- [ ] Done</li></ul>|66|[Cows and Primitive Roots](http://codeforces.com/problemset/problem/284/A)|Codeforces|4|\n|<ul><li>- [ ] Done</li></ul>|67|[Secret](http://codeforces.com/problemset/problem/271/C)|Codeforces|4|\n|<ul><li>- [ ] Done</li></ul>|68|[Fish Weight](http://codeforces.com/problemset/problem/297/B)|Codeforces|4|\n|<ul><li>- [ ] Done</li></ul>|69|[GCD Table](http://codeforces.com/problemset/problem/582/A)|Codeforces|4|\n|<ul><li>- [ ] Done</li></ul>|70|[DZY Loves Chemistry](http://codeforces.com/problemset/problem/445/B)|Codeforces|4|\n|<ul><li>- [ ] Done</li></ul>|71|[Olympiad](http://codeforces.com/problemset/problem/222/D)|Codeforces|4|\n|<ul><li>- [ ] Done</li></ul>|72|[Preparing Olympiad](http://codeforces.com/problemset/problem/550/B)|Codeforces|4|\n|<ul><li>- [ ] Done</li></ul>|73|[Image Preview](http://codeforces.com/problemset/problem/650/B)|Codeforces|4|\n|<ul><li>- [ ] Done</li></ul>|74|[Alyona and the Tree](http://codeforces.com/problemset/problem/682/C)|Codeforces|4|\n|<ul><li>- [ ] Done</li></ul>|75|[Biridian Forest](http://codeforces.com/problemset/problem/329/B)|Codeforces|4|\n|<ul><li>- [ ] Done</li></ul>|76|[Gena's Code](http://codeforces.com/problemset/problem/614/B)|Codeforces|4|\n|<ul><li>- [ ] Done</li></ul>|77|[Dynasty Puzzles](http://codeforces.com/problemset/problem/191/A)|Codeforces|4|\n|<ul><li>- [ ] Done</li></ul>|78|[Eight Point Sets](http://codeforces.com/problemset/problem/334/B)|Codeforces|4|\n|<ul><li>- [ ] Done</li></ul>|79|[Secret Combination](http://codeforces.com/problemset/problem/496/B)|Codeforces|4|\n|<ul><li>- [ ] Done</li></ul>|80|[Fire Again](http://codeforces.com/problemset/problem/35/C)|Codeforces|4|\n|<ul><li>- [ ] Done</li></ul>|81|[Replacement](http://codeforces.com/problemset/problem/570/C)|Codeforces|4|\n|<ul><li>- [ ] Done</li></ul>|82|[Lazy Student](http://codeforces.com/problemset/problem/605/B)|Codeforces|4|\n|<ul><li>- [ ] Done</li></ul>|83|[Quiz](http://codeforces.com/problemset/problem/337/C)|Codeforces|4|\n|<ul><li>- [ ] Done</li></ul>|84|[Queue](http://codeforces.com/problemset/problem/545/D)|Codeforces|4|\n|<ul><li>- [ ] Done</li></ul>|85|[Wet Shark and Flowers](http://codeforces.com/problemset/problem/621/C)|Codeforces|4|\n|<ul><li>- [ ] Done</li></ul>|86|[Han Solo and Lazer Gun](http://codeforces.com/problemset/problem/514/B)|Codeforces|4|\n|<ul><li>- [ ] Done</li></ul>|87|[Two Heaps](http://codeforces.com/problemset/problem/353/B)|Codeforces|4|\n|<ul><li>- [ ] Done</li></ul>|88|[Vasya and String](http://codeforces.com/problemset/problem/676/C)|Codeforces|4|\n|<ul><li>- [ ] Done</li></ul>|89|[Clear Symmetry](http://codeforces.com/problemset/problem/201/A)|Codeforces|4|\n|<ul><li>- [ ] Done</li></ul>|90|[Hometask](http://codeforces.com/problemset/problem/154/A)|Codeforces|4|\n|<ul><li>- [ ] Done</li></ul>|91|[Case of Matryoshkas](http://codeforces.com/problemset/problem/555/A)|Codeforces|4|\n|<ul><li>- [ ] Done</li></ul>|92|[Report](http://codeforces.com/problemset/problem/631/C)|Codeforces|4|\n|<ul><li>- [ ] Done</li></ul>|93|[Amr and Pins](http://codeforces.com/problemset/problem/507/B)|Codeforces|4|\n|<ul><li>- [ ] Done</li></ul>|94|[Bracket Sequence](http://codeforces.com/problemset/problem/223/A)|Codeforces|4|\n|<ul><li>- [ ] Done</li></ul>|95|[Alternating Current](http://codeforces.com/problemset/problem/343/B)|Codeforces|4|\n|<ul><li>- [ ] Done</li></ul>|96|[Win or Freeze](http://codeforces.com/problemset/problem/150/A)|Codeforces|4|\n|<ul><li>- [ ] Done</li></ul>|97|[Soldier and Badges](http://codeforces.com/problemset/problem/546/B)|Codeforces|4|\n|<ul><li>- [ ] Done</li></ul>|98|[Unordered Subsequence](http://codeforces.com/problemset/problem/27/C)|Codeforces|4|\n|<ul><li>- [ ] Done</li></ul>|99|[Woodcutters](http://codeforces.com/problemset/problem/545/C)|Codeforces|4|\n|<ul><li>- [ ] Done</li></ul>|100|[Perfect Pair](http://codeforces.com/problemset/problem/317/A)|Codeforces|4|\n|<ul><li>- [ ] Done</li></ul>|101|[Tree Construction](http://codeforces.com/problemset/problem/675/D)|Codeforces|4|\n|<ul><li>- [ ] Done</li></ul>|102|[The Values You Can Make](http://codeforces.com/problemset/problem/687/C)|Codeforces|4|\n|<ul><li>- [ ] Done</li></ul>|103|[Magic Five](http://codeforces.com/problemset/problem/327/C)|Codeforces|4|\n|<ul><li>- [ ] Done</li></ul>|104|[Falling Anvils](http://codeforces.com/problemset/problem/77/B)|Codeforces|4|\n|<ul><li>- [ ] Done</li></ul>|105|[Vasily the Bear and Sequence](http://codeforces.com/problemset/problem/336/C)|Codeforces|4|\n|<ul><li>- [ ] Done</li></ul>|106|[Vasiliy's Multiset](http://codeforces.com/problemset/problem/706/D)|Codeforces|4|\n|<ul><li>- [ ] Done</li></ul>|107|[Bits](http://codeforces.com/problemset/problem/484/A)|Codeforces|4|\n|<ul><li>- [ ] Done</li></ul>|108|[Divisible by Seven](http://codeforces.com/problemset/problem/375/A)|Codeforces|4|\n|<ul><li>- [ ] Done</li></ul>|109|[Zuma](http://codeforces.com/problemset/problem/607/B)|Codeforces|4|\n|<ul><li>- [ ] Done</li></ul>|110|[Primes on Interval](http://codeforces.com/problemset/problem/237/C)|Codeforces|4|\n|<ul><li>- [ ] Done</li></ul>|111|[Road Map](http://codeforces.com/problemset/problem/34/D)|Codeforces|4|\n|<ul><li>- [ ] Done</li></ul>|112|[Harmony Analysis](http://codeforces.com/problemset/problem/610/C)|Codeforces|4|\n|<ul><li>- [ ] Done</li></ul>|113|[Rational Resistance](http://codeforces.com/problemset/problem/343/A)|Codeforces|4|\n|<ul><li>- [ ] Done</li></ul>|114|[Prime Swaps](http://codeforces.com/problemset/problem/432/C)|Codeforces|4|\n|<ul><li>- [ ] Done</li></ul>|115|[Cthulhu](http://codeforces.com/problemset/problem/103/B)|Codeforces|4|\n|<ul><li>- [ ] Done</li></ul>|116|[Pasha and Tea](http://codeforces.com/problemset/problem/557/B)|Codeforces|4|\n|<ul><li>- [ ] Done</li></ul>|117|[Find Maximum](http://codeforces.com/problemset/problem/353/C)|Codeforces|4|\n|<ul><li>- [ ] Done</li></ul>|118|[k-Multiple Free Set](http://codeforces.com/problemset/problem/274/A)|Codeforces|4|\n|<ul><li>- [ ] Done</li></ul>|119|[Recycling Bottles](http://codeforces.com/problemset/problem/671/A)|Codeforces|4|\n|<ul><li>- [ ] Done</li></ul>|120|[Bear and Three Musketeers](http://codeforces.com/problemset/problem/574/B)|Codeforces|4|\n|<ul><li>- [ ] Done</li></ul>|121|[Beauty Pageant](http://codeforces.com/problemset/problem/246/C)|Codeforces|4|\n|<ul><li>- [ ] Done</li></ul>|122|[About Bacteria](http://codeforces.com/problemset/problem/198/A)|Codeforces|4|\n|<ul><li>- [ ] Done</li></ul>|123|[Spongebob and Joke](http://codeforces.com/problemset/problem/599/B)|Codeforces|4|\n|<ul><li>- [ ] Done</li></ul>|124|[Bear and Blocks](http://codeforces.com/problemset/problem/573/B)|Codeforces|4|\n|<ul><li>- [ ] Done</li></ul>|125|[Two Substrings](http://codeforces.com/problemset/problem/550/A)|Codeforces|4|\n|<ul><li>- [ ] Done</li></ul>|126|[Chips](http://codeforces.com/problemset/problem/333/B)|Codeforces|4|\n|<ul><li>- [ ] Done</li></ul>|127|[Guest From the Past](http://codeforces.com/problemset/problem/625/A)|Codeforces|4|\n|<ul><li>- [ ] Done</li></ul>|128|[Subsegments](http://codeforces.com/problemset/problem/69/E)|Codeforces|4|\n|<ul><li>- [ ] Done</li></ul>|129|[Magic Box](http://codeforces.com/problemset/problem/231/D)|Codeforces|4|\n|<ul><li>- [ ] Done</li></ul>|130|[Planets](http://codeforces.com/problemset/problem/229/B)|Codeforces|4|\n|<ul><li>- [ ] Done</li></ul>|131|[Longtail Hedgehog](http://codeforces.com/problemset/problem/615/B)|Codeforces|4|\n|<ul><li>- [ ] Done</li></ul>|132|[Queue](http://codeforces.com/problemset/problem/91/B)|Codeforces|4|\n|<ul><li>- [ ] Done</li></ul>|133|[The Child and Zoo](http://codeforces.com/problemset/problem/437/D)|Codeforces|4|\n|<ul><li>- [ ] Done</li></ul>|134|[Watering Flowers](http://codeforces.com/problemset/problem/617/C)|Codeforces|4|\n|<ul><li>- [ ] Done</li></ul>|135|[Polyline](http://codeforces.com/problemset/problem/617/D)|Codeforces|4|\n|<ul><li>- [ ] Done</li></ul>|136|[Money Transfers](http://codeforces.com/problemset/problem/675/C)|Codeforces|5|\n|<ul><li>- [ ] Done</li></ul>|137|[3-cycles](http://codeforces.com/problemset/problem/41/E)|Codeforces|5|\n|<ul><li>- [ ] Done</li></ul>|138|[Numbers](http://codeforces.com/problemset/problem/213/B)|Codeforces|5|\n|<ul><li>- [ ] Done</li></ul>|139|[Persistent Bookcase ](http://codeforces.com/problemset/problem/707/D)|Codeforces|5|\n|<ul><li>- [ ] Done</li></ul>|140|[Number With The Given Amount Of Divisors](http://codeforces.com/problemset/problem/27/E)|Codeforces|5|\n|<ul><li>- [ ] Done</li></ul>|141|[Cipher](http://codeforces.com/problemset/problem/156/C)|Codeforces|5|\n|<ul><li>- [ ] Done</li></ul>|142|[Friends and Subsequences](http://codeforces.com/problemset/problem/689/D)|Codeforces|5|\n|<ul><li>- [ ] Done</li></ul>|143|[Last Chance](http://codeforces.com/problemset/problem/137/E)|Codeforces|5|\n|<ul><li>- [ ] Done</li></ul>|144|[Messenger](http://codeforces.com/problemset/problem/631/D)|Codeforces|5|\n|<ul><li>- [ ] Done</li></ul>|145|[Mishka and Interesting sum](http://codeforces.com/problemset/problem/703/D)|Codeforces|5|\n|<ul><li>- [ ] Done</li></ul>|146|[Relay Race](http://codeforces.com/problemset/problem/213/C)|Codeforces|5|\n|<ul><li>- [ ] Done</li></ul>|147|[Black and White Tree](http://codeforces.com/problemset/problem/260/D)|Codeforces|5|\n|<ul><li>- [ ] Done</li></ul>|148|[Sereja and Periods](http://codeforces.com/problemset/problem/314/B)|Codeforces|5|\n|<ul><li>- [ ] Done</li></ul>|149|[Dima and Containers](http://codeforces.com/problemset/problem/358/C)|Codeforces|5|\n|<ul><li>- [ ] Done</li></ul>|150|[Reducing Fractions](http://codeforces.com/problemset/problem/222/C)|Codeforces|5|\n|<ul><li>- [ ] Done</li></ul>|151|[Alyona and Strings](http://codeforces.com/problemset/problem/682/D)|Codeforces|5|\n|<ul><li>- [ ] Done</li></ul>|152|[Police Station](http://codeforces.com/problemset/problem/208/C)|Codeforces|5|\n|<ul><li>- [ ] Done</li></ul>|153|[Pawn](http://codeforces.com/problemset/problem/41/D)|Codeforces|5|\n|<ul><li>- [ ] Done</li></ul>|154|[Permutation Sum](http://codeforces.com/problemset/problem/285/D)|Codeforces|5|\n|<ul><li>- [ ] Done</li></ul>|155|[Ilya and Roads](http://codeforces.com/problemset/problem/313/D)|Codeforces|5|\n|<ul><li>- [ ] Done</li></ul>|156|[Triangles](http://codeforces.com/problemset/problem/229/C)|Codeforces|5|\n|<ul><li>- [ ] Done</li></ul>|157|[Gifts by the List](http://codeforces.com/problemset/problem/681/D)|Codeforces|5|\n|<ul><li>- [ ] Done</li></ul>|158|[Spongebob and Squares](http://codeforces.com/problemset/problem/599/D)|Codeforces|5|\n|<ul><li>- [ ] Done</li></ul>|159|[Flawed Flow](http://codeforces.com/problemset/problem/269/C)|Codeforces|5|\n|<ul><li>- [ ] Done</li></ul>|160|[Hydra](http://codeforces.com/problemset/problem/243/B)|Codeforces|5|\n|<ul><li>- [ ] Done</li></ul>|161|[Police Patrol](http://codeforces.com/problemset/problem/427/E)|Codeforces|5|\n|<ul><li>- [ ] Done</li></ul>|162|[Decoding Genome](http://codeforces.com/problemset/problem/222/E)|Codeforces|5|\n|<ul><li>- [ ] Done</li></ul>|163|[Points on Plane](http://codeforces.com/problemset/problem/576/C)|Codeforces|5|\n|<ul><li>- [ ] Done</li></ul>|164|[Apple Tree](http://codeforces.com/problemset/problem/348/B)|Codeforces|5|\n|<ul><li>- [ ] Done</li></ul>|165|[Domino Principle](http://codeforces.com/problemset/problem/56/E)|Codeforces|5|\n|<ul><li>- [ ] Done</li></ul>|166|[Little Elephant and LCM](http://codeforces.com/problemset/problem/258/C)|Codeforces|5|\n|<ul><li>- [ ] Done</li></ul>|167|[Minesweeper 1D](http://codeforces.com/problemset/problem/404/D)|Codeforces|5|\n|<ul><li>- [ ] Done</li></ul>|168|[Two Strings](http://codeforces.com/problemset/problem/223/B)|Codeforces|5|\n|<ul><li>- [ ] Done</li></ul>|169|[Vanya and Triangles](http://codeforces.com/problemset/problem/552/D)|Codeforces|5|\n|<ul><li>- [ ] Done</li></ul>|170|[Shaass and Lights](http://codeforces.com/problemset/problem/294/C)|Codeforces|5|\n|<ul><li>- [ ] Done</li></ul>|171|[Cycle in Graph](http://codeforces.com/problemset/problem/263/D)|Codeforces|5|\n|<ul><li>- [ ] Done</li></ul>|172|[Compatible Numbers](http://codeforces.com/problemset/problem/165/E)|Codeforces|5|\n|<ul><li>- [ ] Done</li></ul>|173|[Ring Road 2](http://codeforces.com/problemset/problem/27/D)|Codeforces|5|\n|<ul><li>- [ ] Done</li></ul>|174|[Running Track](http://codeforces.com/problemset/problem/615/C)|Codeforces|5|\n|<ul><li>- [ ] Done</li></ul>|175|[Famil Door and Brackets](http://codeforces.com/problemset/problem/629/C)|Codeforces|5|\n|<ul><li>- [ ] Done</li></ul>|176|[Sum](http://codeforces.com/problemset/problem/257/D)|Codeforces|5|\n|<ul><li>- [ ] Done</li></ul>|177|[Fox And Jumping](http://codeforces.com/problemset/problem/510/D)|Codeforces|5|\n|<ul><li>- [ ] Done</li></ul>|178|[Journey](http://codeforces.com/problemset/problem/721/C)|Codeforces|5|\n|<ul><li>- [ ] Done</li></ul>|179|[Paths and Trees](http://codeforces.com/problemset/problem/545/E)|Codeforces|5|\n|<ul><li>- [ ] Done</li></ul>|180|[Vitaly and Cycle](http://codeforces.com/problemset/problem/557/D)|Codeforces|5|\n|<ul><li>- [ ] Done</li></ul>|181|[Block Tower](http://codeforces.com/problemset/problem/327/D)|Codeforces|5|\n|<ul><li>- [ ] Done</li></ul>|182|[Dispute](http://codeforces.com/problemset/problem/242/D)|Codeforces|5|\n|<ul><li>- [ ] Done</li></ul>|183|[Random Task](http://codeforces.com/problemset/problem/431/D)|Codeforces|5|\n|<ul><li>- [ ] Done</li></ul>|184|[Arthur and Table](http://codeforces.com/problemset/problem/557/C)|Codeforces|5|\n|<ul><li>- [ ] Done</li></ul>|185|[Queue](http://codeforces.com/problemset/problem/353/D)|Codeforces|5|\n|<ul><li>- [ ] Done</li></ul>|186|[Amr and Chemistry](http://codeforces.com/problemset/problem/558/C)|Codeforces|5|\n|<ul><li>- [ ] Done</li></ul>|187|[The Road to Berland is Paved With Good Intentions](http://codeforces.com/problemset/problem/228/E)|Codeforces|5|\n|<ul><li>- [ ] Done</li></ul>|188|[Babaei and Birthday Cake](http://codeforces.com/problemset/problem/629/D)|Codeforces|5|\n|<ul><li>- [ ] Done</li></ul>|189|[Kefa and Dishes](http://codeforces.com/problemset/problem/580/D)|Codeforces|5|\n|<ul><li>- [ ] Done</li></ul>|190|[Modulo Sum](http://codeforces.com/problemset/problem/577/B)|Codeforces|5|\n|<ul><li>- [ ] Done</li></ul>|191|[Yet Another Number Game](http://codeforces.com/problemset/problem/282/D)|Codeforces|6|\n|<ul><li>- [ ] Done</li></ul>|192|[Edges in MST](http://codeforces.com/problemset/problem/160/D)|Codeforces|6|\n|<ul><li>- [ ] Done</li></ul>|193|[Arthur and Brackets](http://codeforces.com/problemset/problem/508/E)|Codeforces|6|\n|<ul><li>- [ ] Done</li></ul>|194|[Vanya and Brackets](http://codeforces.com/problemset/problem/552/E)|Codeforces|6|\n|<ul><li>- [ ] Done</li></ul>|195|[Devu and Flowers](http://codeforces.com/problemset/problem/451/E)|Codeforces|6|\n|<ul><li>- [ ] Done</li></ul>|196|[Anya and Cubes](http://codeforces.com/problemset/problem/525/E)|Codeforces|6|\n|<ul><li>- [ ] Done</li></ul>|197|[Vasily the Bear and Beautiful Strings](http://codeforces.com/problemset/problem/336/D)|Codeforces|6|\n|<ul><li>- [ ] Done</li></ul>|198|[Little Victor and Set](http://codeforces.com/problemset/problem/460/D)|Codeforces|7|\n|<ul><li>- [ ] Done</li></ul>|199|[Axis Walking](http://codeforces.com/problemset/problem/327/E)|Codeforces|7|\n|<ul><li>- [ ] Done</li></ul>|200|[Kefa and Watch](http://codeforces.com/problemset/problem/580/E)|Codeforces|7|\n"
  },
  {
    "path": "ladders/28. 1800 <= Codeforces Rating <= 1899 (Extra)/README.md",
    "content": "# Ladder Name: 28 - 1800 <= Codeforces Rating <= 1899 (Extra)\n## Description\n Extra problems for users satisfying this condition\n## Difficulty Level: 4\n\n| Checkbox | ID  | Problem Name | Online Judge | Difficulty |\n|---|:---:|:---:|---|---|\n|<ul><li>- [ ] Done</li></ul>|1|[George and Accommodation](http://codeforces.com/problemset/problem/467/A)|Codeforces|1|\n|<ul><li>- [ ] Done</li></ul>|2|[Spit Problem](http://codeforces.com/problemset/problem/29/A)|Codeforces|1|\n|<ul><li>- [ ] Done</li></ul>|3|[Sereja and Mugs](http://codeforces.com/problemset/problem/426/A)|Codeforces|1|\n|<ul><li>- [ ] Done</li></ul>|4|[Playing with Dice](http://codeforces.com/problemset/problem/378/A)|Codeforces|1|\n|<ul><li>- [ ] Done</li></ul>|5|[Kyoya and Photobooks](http://codeforces.com/problemset/problem/554/A)|Codeforces|1|\n|<ul><li>- [ ] Done</li></ul>|6|[Haiku](http://codeforces.com/problemset/problem/78/A)|Codeforces|1|\n|<ul><li>- [ ] Done</li></ul>|7|[Soroban](http://codeforces.com/problemset/problem/363/A)|Codeforces|1|\n|<ul><li>- [ ] Done</li></ul>|8|[Table](http://codeforces.com/problemset/problem/359/A)|Codeforces|2|\n|<ul><li>- [ ] Done</li></ul>|9|[Valera and Plates](http://codeforces.com/problemset/problem/369/A)|Codeforces|2|\n|<ul><li>- [ ] Done</li></ul>|10|[Sinking Ship](http://codeforces.com/problemset/problem/63/A)|Codeforces|2|\n|<ul><li>- [ ] Done</li></ul>|11|[Case of the Zeros and Ones](http://codeforces.com/problemset/problem/556/A)|Codeforces|2|\n|<ul><li>- [ ] Done</li></ul>|12|[Drazil and Date](http://codeforces.com/problemset/problem/515/A)|Codeforces|2|\n|<ul><li>- [ ] Done</li></ul>|13|[Bear and Raspberry](http://codeforces.com/problemset/problem/385/A)|Codeforces|2|\n|<ul><li>- [ ] Done</li></ul>|14|[Worms Evolution](http://codeforces.com/problemset/problem/31/A)|Codeforces|2|\n|<ul><li>- [ ] Done</li></ul>|15|[Group of Students](http://codeforces.com/problemset/problem/357/A)|Codeforces|2|\n|<ul><li>- [ ] Done</li></ul>|16|[Lever](http://codeforces.com/problemset/problem/376/A)|Codeforces|2|\n|<ul><li>- [ ] Done</li></ul>|17|[Lucky Ticket](http://codeforces.com/problemset/problem/146/A)|Codeforces|2|\n|<ul><li>- [ ] Done</li></ul>|18|[Game With Sticks](http://codeforces.com/problemset/problem/451/A)|Codeforces|2|\n|<ul><li>- [ ] Done</li></ul>|19|[Depression](http://codeforces.com/problemset/problem/80/B)|Codeforces|2|\n|<ul><li>- [ ] Done</li></ul>|20|[Easter Eggs](http://codeforces.com/problemset/problem/78/B)|Codeforces|2|\n|<ul><li>- [ ] Done</li></ul>|21|[Vasya and Digital Root](http://codeforces.com/problemset/problem/355/A)|Codeforces|2|\n|<ul><li>- [ ] Done</li></ul>|22|[Sereja and Coat Rack](http://codeforces.com/problemset/problem/368/A)|Codeforces|2|\n|<ul><li>- [ ] Done</li></ul>|23|[Multiplication Table](http://codeforces.com/problemset/problem/577/A)|Codeforces|2|\n|<ul><li>- [ ] Done</li></ul>|24|[Canvas Frames](http://codeforces.com/problemset/problem/127/B)|Codeforces|3|\n|<ul><li>- [ ] Done</li></ul>|25|[Petya and Staircases](http://codeforces.com/problemset/problem/362/B)|Codeforces|3|\n|<ul><li>- [ ] Done</li></ul>|26|[Progress Bar](http://codeforces.com/problemset/problem/71/B)|Codeforces|3|\n|<ul><li>- [ ] Done</li></ul>|27|[A and B and Compilation Errors](http://codeforces.com/problemset/problem/519/B)|Codeforces|3|\n|<ul><li>- [ ] Done</li></ul>|28|[Bear and Strings](http://codeforces.com/problemset/problem/385/B)|Codeforces|3|\n|<ul><li>- [ ] Done</li></ul>|29|[Dorm Water Supply](http://codeforces.com/problemset/problem/107/A)|Codeforces|3|\n|<ul><li>- [ ] Done</li></ul>|30|[Permutation](http://codeforces.com/problemset/problem/359/B)|Codeforces|3|\n|<ul><li>- [ ] Done</li></ul>|31|[Appleman and Toastman](http://codeforces.com/problemset/problem/461/A)|Codeforces|3|\n|<ul><li>- [ ] Done</li></ul>|32|[Strings of Power](http://codeforces.com/problemset/problem/318/B)|Codeforces|3|\n|<ul><li>- [ ] Done</li></ul>|33|[Lexicographically Maximum Subsequence](http://codeforces.com/problemset/problem/196/A)|Codeforces|3|\n|<ul><li>- [ ] Done</li></ul>|34|[Whose sentence is it?](http://codeforces.com/problemset/problem/312/A)|Codeforces|3|\n|<ul><li>- [ ] Done</li></ul>|35|[Milking cows](http://codeforces.com/problemset/problem/383/A)|Codeforces|3|\n|<ul><li>- [ ] Done</li></ul>|36|[Sereja and Stairs](http://codeforces.com/problemset/problem/381/B)|Codeforces|3|\n|<ul><li>- [ ] Done</li></ul>|37|[Good Number](http://codeforces.com/problemset/problem/365/A)|Codeforces|3|\n|<ul><li>- [ ] Done</li></ul>|38|[Mashmokh and Numbers](http://codeforces.com/problemset/problem/414/A)|Codeforces|3|\n|<ul><li>- [ ] Done</li></ul>|39|[Fox and Number Game](http://codeforces.com/problemset/problem/389/A)|Codeforces|3|\n|<ul><li>- [ ] Done</li></ul>|40|[Levko and Permutation](http://codeforces.com/problemset/problem/361/B)|Codeforces|3|\n|<ul><li>- [ ] Done</li></ul>|41|[Xor-tree](http://codeforces.com/problemset/problem/429/A)|Codeforces|3|\n|<ul><li>- [ ] Done</li></ul>|42|[Prizes, Prizes, more Prizes](http://codeforces.com/problemset/problem/208/D)|Codeforces|3|\n|<ul><li>- [ ] Done</li></ul>|43|[Find Pair](http://codeforces.com/problemset/problem/160/C)|Codeforces|4|\n|<ul><li>- [ ] Done</li></ul>|44|[Magic Box](http://codeforces.com/problemset/problem/231/D)|Codeforces|4|\n|<ul><li>- [ ] Done</li></ul>|45|[Bits](http://codeforces.com/problemset/problem/484/A)|Codeforces|4|\n|<ul><li>- [ ] Done</li></ul>|46|[History](http://codeforces.com/problemset/problem/137/C)|Codeforces|4|\n|<ul><li>- [ ] Done</li></ul>|47|[Remainders Game](http://codeforces.com/problemset/problem/687/B)|Codeforces|4|\n|<ul><li>- [ ] Done</li></ul>|48|[Guess Your Way Out!](http://codeforces.com/problemset/problem/507/C)|Codeforces|4|\n|<ul><li>- [ ] Done</li></ul>|49|[Guest From the Past](http://codeforces.com/problemset/problem/625/A)|Codeforces|4|\n|<ul><li>- [ ] Done</li></ul>|50|[Magical Boxes](http://codeforces.com/problemset/problem/269/A)|Codeforces|4|\n|<ul><li>- [ ] Done</li></ul>|51|[Prime Permutation](http://codeforces.com/problemset/problem/123/A)|Codeforces|4|\n|<ul><li>- [ ] Done</li></ul>|52|[Yaroslav and Sequence](http://codeforces.com/problemset/problem/301/A)|Codeforces|4|\n|<ul><li>- [ ] Done</li></ul>|53|[Division into Teams](http://codeforces.com/problemset/problem/149/C)|Codeforces|4|\n|<ul><li>- [ ] Done</li></ul>|54|[School Marks](http://codeforces.com/problemset/problem/540/B)|Codeforces|4|\n|<ul><li>- [ ] Done</li></ul>|55|[Prime Swaps](http://codeforces.com/problemset/problem/432/C)|Codeforces|4|\n|<ul><li>- [ ] Done</li></ul>|56|[Cutting Figure](http://codeforces.com/problemset/problem/193/A)|Codeforces|4|\n|<ul><li>- [ ] Done</li></ul>|57|[Vasily the Bear and Sequence](http://codeforces.com/problemset/problem/336/C)|Codeforces|4|\n|<ul><li>- [ ] Done</li></ul>|58|[Alyona and a tree](http://codeforces.com/problemset/problem/739/B)|Codeforces|4|\n|<ul><li>- [ ] Done</li></ul>|59|[Ilya and Sticks](http://codeforces.com/problemset/problem/525/C)|Codeforces|4|\n|<ul><li>- [ ] Done</li></ul>|60|[Heap Operations](http://codeforces.com/problemset/problem/681/C)|Codeforces|4|\n|<ul><li>- [ ] Done</li></ul>|61|[Report](http://codeforces.com/problemset/problem/631/C)|Codeforces|4|\n|<ul><li>- [ ] Done</li></ul>|62|[Bear and Blocks](http://codeforces.com/problemset/problem/573/B)|Codeforces|4|\n|<ul><li>- [ ] Done</li></ul>|63|[Kolya and Tanya ](http://codeforces.com/problemset/problem/584/B)|Codeforces|4|\n|<ul><li>- [ ] Done</li></ul>|64|[Bracket Sequence](http://codeforces.com/problemset/problem/223/A)|Codeforces|4|\n|<ul><li>- [ ] Done</li></ul>|65|[Dreamoon and Sets](http://codeforces.com/problemset/problem/476/D)|Codeforces|4|\n|<ul><li>- [ ] Done</li></ul>|66|[Lazy Student](http://codeforces.com/problemset/problem/605/B)|Codeforces|4|\n|<ul><li>- [ ] Done</li></ul>|67|[Olympiad](http://codeforces.com/problemset/problem/222/D)|Codeforces|4|\n|<ul><li>- [ ] Done</li></ul>|68|[The Child and Zoo](http://codeforces.com/problemset/problem/437/D)|Codeforces|4|\n|<ul><li>- [ ] Done</li></ul>|69|[Queue](http://codeforces.com/problemset/problem/545/D)|Codeforces|4|\n|<ul><li>- [ ] Done</li></ul>|70|[Approximating a Constant Range](http://codeforces.com/problemset/problem/602/B)|Codeforces|4|\n|<ul><li>- [ ] Done</li></ul>|71|[Biridian Forest](http://codeforces.com/problemset/problem/329/B)|Codeforces|4|\n|<ul><li>- [ ] Done</li></ul>|72|[Amr and Pins](http://codeforces.com/problemset/problem/507/B)|Codeforces|4|\n|<ul><li>- [ ] Done</li></ul>|73|[Levko and Array Recovery](http://codeforces.com/problemset/problem/360/A)|Codeforces|4|\n|<ul><li>- [ ] Done</li></ul>|74|[Robin Hood](http://codeforces.com/problemset/problem/671/B)|Codeforces|4|\n|<ul><li>- [ ] Done</li></ul>|75|[Quiz](http://codeforces.com/problemset/problem/337/C)|Codeforces|4|\n|<ul><li>- [ ] Done</li></ul>|76|[Polo the Penguin and XOR operation](http://codeforces.com/problemset/problem/288/C)|Codeforces|4|\n|<ul><li>- [ ] Done</li></ul>|77|[Dynasty Puzzles](http://codeforces.com/problemset/problem/191/A)|Codeforces|4|\n|<ul><li>- [ ] Done</li></ul>|78|[k-Multiple Free Set](http://codeforces.com/problemset/problem/274/A)|Codeforces|4|\n|<ul><li>- [ ] Done</li></ul>|79|[Tree Construction](http://codeforces.com/problemset/problem/675/D)|Codeforces|4|\n|<ul><li>- [ ] Done</li></ul>|80|[Misha and Permutations Summation](http://codeforces.com/problemset/problem/501/D)|Codeforces|4|\n|<ul><li>- [ ] Done</li></ul>|81|[Inna and Nine](http://codeforces.com/problemset/problem/374/B)|Codeforces|4|\n|<ul><li>- [ ] Done</li></ul>|82|[Two Substrings](http://codeforces.com/problemset/problem/550/A)|Codeforces|4|\n|<ul><li>- [ ] Done</li></ul>|83|[Alyona and the Tree](http://codeforces.com/problemset/problem/682/C)|Codeforces|4|\n|<ul><li>- [ ] Done</li></ul>|84|[Subsegments](http://codeforces.com/problemset/problem/69/E)|Codeforces|4|\n|<ul><li>- [ ] Done</li></ul>|85|[Toy Sum](http://codeforces.com/problemset/problem/405/D)|Codeforces|4|\n|<ul><li>- [ ] Done</li></ul>|86|[Alice and Bob](http://codeforces.com/problemset/problem/346/A)|Codeforces|4|\n|<ul><li>- [ ] Done</li></ul>|87|[Non-Secret Cypher](http://codeforces.com/problemset/problem/190/D)|Codeforces|4|\n|<ul><li>- [ ] Done</li></ul>|88|[Petya and His Friends](http://codeforces.com/problemset/problem/66/D)|Codeforces|4|\n|<ul><li>- [ ] Done</li></ul>|89|[Alternating Current](http://codeforces.com/problemset/problem/343/B)|Codeforces|4|\n|<ul><li>- [ ] Done</li></ul>|90|[The Big Race](http://codeforces.com/problemset/problem/592/C)|Codeforces|4|\n|<ul><li>- [ ] Done</li></ul>|91|[Cycles](http://codeforces.com/problemset/problem/232/A)|Codeforces|4|\n|<ul><li>- [ ] Done</li></ul>|92|[The Values You Can Make](http://codeforces.com/problemset/problem/687/C)|Codeforces|4|\n|<ul><li>- [ ] Done</li></ul>|93|[Road Map](http://codeforces.com/problemset/problem/34/D)|Codeforces|4|\n|<ul><li>- [ ] Done</li></ul>|94|[Newspaper Headline](http://codeforces.com/problemset/problem/91/A)|Codeforces|4|\n|<ul><li>- [ ] Done</li></ul>|95|[Valera and Contest](http://codeforces.com/problemset/problem/369/B)|Codeforces|4|\n|<ul><li>- [ ] Done</li></ul>|96|[Ivan and Powers of Two](http://codeforces.com/problemset/problem/305/C)|Codeforces|4|\n|<ul><li>- [ ] Done</li></ul>|97|[Polyline](http://codeforces.com/problemset/problem/617/D)|Codeforces|4|\n|<ul><li>- [ ] Done</li></ul>|98|[Inna and Sequence ](http://codeforces.com/problemset/problem/374/D)|Codeforces|4|\n|<ul><li>- [ ] Done</li></ul>|99|[Anagram Search](http://codeforces.com/problemset/problem/144/C)|Codeforces|4|\n|<ul><li>- [ ] Done</li></ul>|100|[Chips](http://codeforces.com/problemset/problem/333/B)|Codeforces|4|\n|<ul><li>- [ ] Done</li></ul>|101|[Fish Weight](http://codeforces.com/problemset/problem/297/B)|Codeforces|4|\n|<ul><li>- [ ] Done</li></ul>|102|[Rational Resistance](http://codeforces.com/problemset/problem/343/A)|Codeforces|4|\n|<ul><li>- [ ] Done</li></ul>|103|[Falling Anvils](http://codeforces.com/problemset/problem/77/B)|Codeforces|4|\n|<ul><li>- [ ] Done</li></ul>|104|[Maximal Area Quadrilateral](http://codeforces.com/problemset/problem/340/B)|Codeforces|4|\n|<ul><li>- [ ] Done</li></ul>|105|[Find Maximum](http://codeforces.com/problemset/problem/353/C)|Codeforces|4|\n|<ul><li>- [ ] Done</li></ul>|106|[Jeff and Furik](http://codeforces.com/problemset/problem/351/B)|Codeforces|4|\n|<ul><li>- [ ] Done</li></ul>|107|[Making Sequences is Fun](http://codeforces.com/problemset/problem/373/B)|Codeforces|4|\n|<ul><li>- [ ] Done</li></ul>|108|[Multitasking](http://codeforces.com/problemset/problem/384/B)|Codeforces|4|\n|<ul><li>- [ ] Done</li></ul>|109|[Vasiliy's Multiset](http://codeforces.com/problemset/problem/706/D)|Codeforces|4|\n|<ul><li>- [ ] Done</li></ul>|110|[Woodcutters](http://codeforces.com/problemset/problem/545/C)|Codeforces|4|\n|<ul><li>- [ ] Done</li></ul>|111|[More Cowbell](http://codeforces.com/problemset/problem/604/B)|Codeforces|4|\n|<ul><li>- [ ] Done</li></ul>|112|[Watering Flowers](http://codeforces.com/problemset/problem/617/C)|Codeforces|4|\n|<ul><li>- [ ] Done</li></ul>|113|[Planets](http://codeforces.com/problemset/problem/229/B)|Codeforces|4|\n|<ul><li>- [ ] Done</li></ul>|114|[Zuma](http://codeforces.com/problemset/problem/607/B)|Codeforces|4|\n|<ul><li>- [ ] Done</li></ul>|115|[OR in Matrix](http://codeforces.com/problemset/problem/486/B)|Codeforces|4|\n|<ul><li>- [ ] Done</li></ul>|116|[Divisible by Seven](http://codeforces.com/problemset/problem/375/A)|Codeforces|4|\n|<ul><li>- [ ] Done</li></ul>|117|[Dima and Two Sequences](http://codeforces.com/problemset/problem/272/D)|Codeforces|4|\n|<ul><li>- [ ] Done</li></ul>|118|[Queue](http://codeforces.com/problemset/problem/91/B)|Codeforces|4|\n|<ul><li>- [ ] Done</li></ul>|119|[Dima and Lisa](http://codeforces.com/problemset/problem/584/D)|Codeforces|4|\n|<ul><li>- [ ] Done</li></ul>|120|[Running Track](http://codeforces.com/problemset/problem/615/C)|Codeforces|5|\n|<ul><li>- [ ] Done</li></ul>|121|[Mike and Geometry Problem](http://codeforces.com/problemset/problem/689/E)|Codeforces|5|\n|<ul><li>- [ ] Done</li></ul>|122|[Flawed Flow](http://codeforces.com/problemset/problem/269/C)|Codeforces|5|\n|<ul><li>- [ ] Done</li></ul>|123|[Love Triangles](http://codeforces.com/problemset/problem/553/C)|Codeforces|5|\n|<ul><li>- [ ] Done</li></ul>|124|[Subway Innovation](http://codeforces.com/problemset/problem/371/E)|Codeforces|5|\n|<ul><li>- [ ] Done</li></ul>|125|[Gifts by the List](http://codeforces.com/problemset/problem/681/D)|Codeforces|5|\n|<ul><li>- [ ] Done</li></ul>|126|[Black and White Tree](http://codeforces.com/problemset/problem/260/D)|Codeforces|5|\n|<ul><li>- [ ] Done</li></ul>|127|[Anton and Ira](http://codeforces.com/problemset/problem/584/E)|Codeforces|5|\n|<ul><li>- [ ] Done</li></ul>|128|[Beavermuncher-0xFF](http://codeforces.com/problemset/problem/77/C)|Codeforces|5|\n|<ul><li>- [ ] Done</li></ul>|129|[Last Chance](http://codeforces.com/problemset/problem/137/E)|Codeforces|5|\n|<ul><li>- [ ] Done</li></ul>|130|[Palindromes](http://codeforces.com/problemset/problem/137/D)|Codeforces|5|\n|<ul><li>- [ ] Done</li></ul>|131|[Preparing for the Contest](http://codeforces.com/problemset/problem/377/B)|Codeforces|5|\n|<ul><li>- [ ] Done</li></ul>|132|[Block Tower](http://codeforces.com/problemset/problem/327/D)|Codeforces|5|\n|<ul><li>- [ ] Done</li></ul>|133|[Vladik and cards](http://codeforces.com/problemset/problem/743/E)|Codeforces|5|\n|<ul><li>- [ ] Done</li></ul>|134|[Beautiful Decomposition](http://codeforces.com/problemset/problem/279/E)|Codeforces|5|\n|<ul><li>- [ ] Done</li></ul>|135|[Points on Plane](http://codeforces.com/problemset/problem/576/C)|Codeforces|5|\n|<ul><li>- [ ] Done</li></ul>|136|[Broken Monitor](http://codeforces.com/problemset/problem/370/D)|Codeforces|5|\n|<ul><li>- [ ] Done</li></ul>|137|[Memory and Scores](http://codeforces.com/problemset/problem/712/D)|Codeforces|5|\n|<ul><li>- [ ] Done</li></ul>|138|[Cubes](http://codeforces.com/problemset/problem/520/D)|Codeforces|5|\n|<ul><li>- [ ] Done</li></ul>|139|[Games with Rectangle](http://codeforces.com/problemset/problem/128/C)|Codeforces|5|\n|<ul><li>- [ ] Done</li></ul>|140|[Iahub and Permutations](http://codeforces.com/problemset/problem/340/E)|Codeforces|5|\n|<ul><li>- [ ] Done</li></ul>|141|[Friends and Subsequences](http://codeforces.com/problemset/problem/689/D)|Codeforces|5|\n|<ul><li>- [ ] Done</li></ul>|142|[Insertion Sort](http://codeforces.com/problemset/problem/362/C)|Codeforces|5|\n|<ul><li>- [ ] Done</li></ul>|143|[Vika and Segments](http://codeforces.com/problemset/problem/610/D)|Codeforces|5|\n|<ul><li>- [ ] Done</li></ul>|144|[Persistent Bookcase ](http://codeforces.com/problemset/problem/707/D)|Codeforces|5|\n|<ul><li>- [ ] Done</li></ul>|145|[Cycle in Graph](http://codeforces.com/problemset/problem/263/D)|Codeforces|5|\n|<ul><li>- [ ] Done</li></ul>|146|[Apple Tree](http://codeforces.com/problemset/problem/348/B)|Codeforces|5|\n|<ul><li>- [ ] Done</li></ul>|147|[Wizards and Huge Prize](http://codeforces.com/problemset/problem/167/B)|Codeforces|5|\n|<ul><li>- [ ] Done</li></ul>|148|[3-cycles](http://codeforces.com/problemset/problem/41/E)|Codeforces|5|\n|<ul><li>- [ ] Done</li></ul>|149|[Dima and Containers](http://codeforces.com/problemset/problem/358/C)|Codeforces|5|\n|<ul><li>- [ ] Done</li></ul>|150|[Directed Roads](http://codeforces.com/problemset/problem/711/D)|Codeforces|5|\n|<ul><li>- [ ] Done</li></ul>|151|[Dima and Magic Guitar](http://codeforces.com/problemset/problem/366/E)|Codeforces|5|\n|<ul><li>- [ ] Done</li></ul>|152|[Free Market](http://codeforces.com/problemset/problem/364/B)|Codeforces|5|\n|<ul><li>- [ ] Done</li></ul>|153|[Infinite Maze](http://codeforces.com/problemset/problem/196/B)|Codeforces|5|\n|<ul><li>- [ ] Done</li></ul>|154|[Ilya and Roads](http://codeforces.com/problemset/problem/313/D)|Codeforces|5|\n|<ul><li>- [ ] Done</li></ul>|155|[The Road to Berland is Paved With Good Intentions](http://codeforces.com/problemset/problem/228/E)|Codeforces|5|\n|<ul><li>- [ ] Done</li></ul>|156|[Alyona and Strings](http://codeforces.com/problemset/problem/682/D)|Codeforces|5|\n|<ul><li>- [ ] Done</li></ul>|157|[Messenger](http://codeforces.com/problemset/problem/631/D)|Codeforces|5|\n|<ul><li>- [ ] Done</li></ul>|158|[Police Patrol](http://codeforces.com/problemset/problem/427/E)|Codeforces|5|\n|<ul><li>- [ ] Done</li></ul>|159|[Xenia and Hamming](http://codeforces.com/problemset/problem/356/B)|Codeforces|5|\n|<ul><li>- [ ] Done</li></ul>|160|[Let's Play Osu!](http://codeforces.com/problemset/problem/235/B)|Codeforces|5|\n|<ul><li>- [ ] Done</li></ul>|161|[Happy Tree Party](http://codeforces.com/problemset/problem/593/D)|Codeforces|5|\n|<ul><li>- [ ] Done</li></ul>|162|[Number With The Given Amount Of Divisors](http://codeforces.com/problemset/problem/27/E)|Codeforces|5|\n|<ul><li>- [ ] Done</li></ul>|163|[Shaass and Lights](http://codeforces.com/problemset/problem/294/C)|Codeforces|5|\n|<ul><li>- [ ] Done</li></ul>|164|[Little Elephant and Elections](http://codeforces.com/problemset/problem/258/B)|Codeforces|5|\n|<ul><li>- [ ] Done</li></ul>|165|[Theseus and labyrinth](http://codeforces.com/problemset/problem/676/D)|Codeforces|5|\n|<ul><li>- [ ] Done</li></ul>|166|[Yaroslav and Time](http://codeforces.com/problemset/problem/301/B)|Codeforces|5|\n|<ul><li>- [ ] Done</li></ul>|167|[Rat Kwesh and Cheese](http://codeforces.com/problemset/problem/621/D)|Codeforces|5|\n|<ul><li>- [ ] Done</li></ul>|168|[Minesweeper 1D](http://codeforces.com/problemset/problem/404/D)|Codeforces|5|\n|<ul><li>- [ ] Done</li></ul>|169|[Beard Graph](http://codeforces.com/problemset/problem/165/D)|Codeforces|5|\n|<ul><li>- [ ] Done</li></ul>|170|[Compatible Numbers](http://codeforces.com/problemset/problem/165/E)|Codeforces|5|\n|<ul><li>- [ ] Done</li></ul>|171|[Mishka and Interesting sum](http://codeforces.com/problemset/problem/703/D)|Codeforces|5|\n|<ul><li>- [ ] Done</li></ul>|172|[Vanya and Triangles](http://codeforces.com/problemset/problem/552/D)|Codeforces|5|\n|<ul><li>- [ ] Done</li></ul>|173|[Money Transfers](http://codeforces.com/problemset/problem/675/C)|Codeforces|5|\n|<ul><li>- [ ] Done</li></ul>|174|[Queue](http://codeforces.com/problemset/problem/353/D)|Codeforces|5|\n|<ul><li>- [ ] Done</li></ul>|175|[Inna and Pink Pony](http://codeforces.com/problemset/problem/374/A)|Codeforces|5|\n|<ul><li>- [ ] Done</li></ul>|176|[Fox And Jumping](http://codeforces.com/problemset/problem/510/D)|Codeforces|5|\n|<ul><li>- [ ] Done</li></ul>|177|[Random Task](http://codeforces.com/problemset/problem/431/D)|Codeforces|5|\n|<ul><li>- [ ] Done</li></ul>|178|[Minimization](http://codeforces.com/problemset/problem/571/B)|Codeforces|5|\n|<ul><li>- [ ] Done</li></ul>|179|[Modulo Sum](http://codeforces.com/problemset/problem/577/B)|Codeforces|5|\n|<ul><li>- [ ] Done</li></ul>|180|[Paths and Trees](http://codeforces.com/problemset/problem/545/E)|Codeforces|5|\n|<ul><li>- [ ] Done</li></ul>|181|[Famil Door and Brackets](http://codeforces.com/problemset/problem/629/C)|Codeforces|5|\n|<ul><li>- [ ] Done</li></ul>|182|[Babaei and Birthday Cake](http://codeforces.com/problemset/problem/629/D)|Codeforces|5|\n|<ul><li>- [ ] Done</li></ul>|183|[Wet Shark and Blocks](http://codeforces.com/problemset/problem/621/E)|Codeforces|5|\n|<ul><li>- [ ] Done</li></ul>|184|[Empire Strikes Back](http://codeforces.com/problemset/problem/300/E)|Codeforces|6|\n|<ul><li>- [ ] Done</li></ul>|185|[Vanya and Brackets](http://codeforces.com/problemset/problem/552/E)|Codeforces|6|\n|<ul><li>- [ ] Done</li></ul>|186|[Game with Powers](http://codeforces.com/problemset/problem/317/D)|Codeforces|6|\n|<ul><li>- [ ] Done</li></ul>|187|[Arthur and Brackets](http://codeforces.com/problemset/problem/508/E)|Codeforces|6|\n|<ul><li>- [ ] Done</li></ul>|188|[Anya and Cubes](http://codeforces.com/problemset/problem/525/E)|Codeforces|6|\n|<ul><li>- [ ] Done</li></ul>|189|[Devu and Flowers](http://codeforces.com/problemset/problem/451/E)|Codeforces|6|\n|<ul><li>- [ ] Done</li></ul>|190|[Coin Troubles](http://codeforces.com/problemset/problem/283/C)|Codeforces|6|\n|<ul><li>- [ ] Done</li></ul>|191|[Thwarting Demonstrations](http://codeforces.com/problemset/problem/191/E)|Codeforces|6|\n|<ul><li>- [ ] Done</li></ul>|192|[Yet Another Number Game](http://codeforces.com/problemset/problem/282/D)|Codeforces|6|\n|<ul><li>- [ ] Done</li></ul>|193|[Game on Tree](http://codeforces.com/problemset/problem/280/C)|Codeforces|6|\n|<ul><li>- [ ] Done</li></ul>|194|[Edges in MST](http://codeforces.com/problemset/problem/160/D)|Codeforces|6|\n|<ul><li>- [ ] Done</li></ul>|195|[Trains and Statistic](http://codeforces.com/problemset/problem/675/E)|Codeforces|6|\n|<ul><li>- [ ] Done</li></ul>|196|[Infinite Inversions](http://codeforces.com/problemset/problem/540/E)|Codeforces|6|\n|<ul><li>- [ ] Done</li></ul>|197|[Product Sum](http://codeforces.com/problemset/problem/631/E)|Codeforces|7|\n|<ul><li>- [ ] Done</li></ul>|198|[Axis Walking](http://codeforces.com/problemset/problem/327/E)|Codeforces|7|\n|<ul><li>- [ ] Done</li></ul>|199|[Kefa and Watch](http://codeforces.com/problemset/problem/580/E)|Codeforces|7|\n|<ul><li>- [ ] Done</li></ul>|200|[Optimize!](http://codeforces.com/problemset/problem/338/E)|Codeforces|8|\n"
  },
  {
    "path": "ladders/29. 1900 <= Codeforces Rating <= 1999 (Extra)/README.md",
    "content": "# Ladder Name: 29 - 1900 <= Codeforces Rating <= 1999 (Extra)\n## Description\n Extra problems for users satisfying this condition\n## Difficulty Level: 5\n\n| Checkbox | ID  | Problem Name | Online Judge | Difficulty |\n|---|:---:|:---:|---|---|\n|<ul><li>- [ ] Done</li></ul>|1|[Rewards](http://codeforces.com/problemset/problem/448/A)|Codeforces|1|\n|<ul><li>- [ ] Done</li></ul>|2|[Kyoya and Photobooks](http://codeforces.com/problemset/problem/554/A)|Codeforces|1|\n|<ul><li>- [ ] Done</li></ul>|3|[Playing with Dice](http://codeforces.com/problemset/problem/378/A)|Codeforces|1|\n|<ul><li>- [ ] Done</li></ul>|4|[George and Accommodation](http://codeforces.com/problemset/problem/467/A)|Codeforces|1|\n|<ul><li>- [ ] Done</li></ul>|5|[Bear and Finding Criminals](http://codeforces.com/problemset/problem/680/B)|Codeforces|2|\n|<ul><li>- [ ] Done</li></ul>|6|[Table](http://codeforces.com/problemset/problem/359/A)|Codeforces|2|\n|<ul><li>- [ ] Done</li></ul>|7|[Lever](http://codeforces.com/problemset/problem/376/A)|Codeforces|2|\n|<ul><li>- [ ] Done</li></ul>|8|[Drazil and Date](http://codeforces.com/problemset/problem/515/A)|Codeforces|2|\n|<ul><li>- [ ] Done</li></ul>|9|[Exams](http://codeforces.com/problemset/problem/194/A)|Codeforces|2|\n|<ul><li>- [ ] Done</li></ul>|10|[Bear and Five Cards](http://codeforces.com/problemset/problem/680/A)|Codeforces|2|\n|<ul><li>- [ ] Done</li></ul>|11|[Amr and Music](http://codeforces.com/problemset/problem/507/A)|Codeforces|2|\n|<ul><li>- [ ] Done</li></ul>|12|[Initial Bet](http://codeforces.com/problemset/problem/478/A)|Codeforces|2|\n|<ul><li>- [ ] Done</li></ul>|13|[Game With Sticks](http://codeforces.com/problemset/problem/451/A)|Codeforces|2|\n|<ul><li>- [ ] Done</li></ul>|14|[Devu, the Singer and Churu, the Joker](http://codeforces.com/problemset/problem/439/A)|Codeforces|2|\n|<ul><li>- [ ] Done</li></ul>|15|[Joysticks](http://codeforces.com/problemset/problem/651/A)|Codeforces|2|\n|<ul><li>- [ ] Done</li></ul>|16|[Arrays](http://codeforces.com/problemset/problem/572/A)|Codeforces|2|\n|<ul><li>- [ ] Done</li></ul>|17|[Case of the Zeros and Ones](http://codeforces.com/problemset/problem/556/A)|Codeforces|2|\n|<ul><li>- [ ] Done</li></ul>|18|[Multiplication Table](http://codeforces.com/problemset/problem/577/A)|Codeforces|2|\n|<ul><li>- [ ] Done</li></ul>|19|[Currency System in Geraldion](http://codeforces.com/problemset/problem/560/A)|Codeforces|2|\n|<ul><li>- [ ] Done</li></ul>|20|[Domino Effect](http://codeforces.com/problemset/problem/405/B)|Codeforces|3|\n|<ul><li>- [ ] Done</li></ul>|21|[Case of Fake Numbers](http://codeforces.com/problemset/problem/556/B)|Codeforces|3|\n|<ul><li>- [ ] Done</li></ul>|22|[Sereja and Stairs](http://codeforces.com/problemset/problem/381/B)|Codeforces|3|\n|<ul><li>- [ ] Done</li></ul>|23|[Bear and Poker](http://codeforces.com/problemset/problem/573/A)|Codeforces|3|\n|<ul><li>- [ ] Done</li></ul>|24|[I.O.U.](http://codeforces.com/problemset/problem/376/B)|Codeforces|3|\n|<ul><li>- [ ] Done</li></ul>|25|[Nuts](http://codeforces.com/problemset/problem/402/A)|Codeforces|3|\n|<ul><li>- [ ] Done</li></ul>|26|[The Wall](http://codeforces.com/problemset/problem/340/A)|Codeforces|3|\n|<ul><li>- [ ] Done</li></ul>|27|[Semifinals](http://codeforces.com/problemset/problem/378/B)|Codeforces|3|\n|<ul><li>- [ ] Done</li></ul>|28|[Valuable Resources](http://codeforces.com/problemset/problem/485/B)|Codeforces|3|\n|<ul><li>- [ ] Done</li></ul>|29|[Prizes, Prizes, more Prizes](http://codeforces.com/problemset/problem/208/D)|Codeforces|3|\n|<ul><li>- [ ] Done</li></ul>|30|[Fox and Number Game](http://codeforces.com/problemset/problem/389/A)|Codeforces|3|\n|<ul><li>- [ ] Done</li></ul>|31|[Simple Game](http://codeforces.com/problemset/problem/570/B)|Codeforces|3|\n|<ul><li>- [ ] Done</li></ul>|32|[Elections](http://codeforces.com/problemset/problem/570/A)|Codeforces|3|\n|<ul><li>- [ ] Done</li></ul>|33|[Strings of Power](http://codeforces.com/problemset/problem/318/B)|Codeforces|3|\n|<ul><li>- [ ] Done</li></ul>|34|[Permutation](http://codeforces.com/problemset/problem/359/B)|Codeforces|3|\n|<ul><li>- [ ] Done</li></ul>|35|[Art Union](http://codeforces.com/problemset/problem/416/B)|Codeforces|3|\n|<ul><li>- [ ] Done</li></ul>|36|[Diverse Permutation](http://codeforces.com/problemset/problem/482/A)|Codeforces|3|\n|<ul><li>- [ ] Done</li></ul>|37|[MUH and Sticks](http://codeforces.com/problemset/problem/471/A)|Codeforces|3|\n|<ul><li>- [ ] Done</li></ul>|38|[Kyoya and Colored Balls](http://codeforces.com/problemset/problem/553/A)|Codeforces|3|\n|<ul><li>- [ ] Done</li></ul>|39|[Mashmokh and Numbers](http://codeforces.com/problemset/problem/414/A)|Codeforces|3|\n|<ul><li>- [ ] Done</li></ul>|40|[Devu, the Dumb Guy](http://codeforces.com/problemset/problem/439/B)|Codeforces|3|\n|<ul><li>- [ ] Done</li></ul>|41|[Random Teams](http://codeforces.com/problemset/problem/478/B)|Codeforces|3|\n|<ul><li>- [ ] Done</li></ul>|42|[Chat Online](http://codeforces.com/problemset/problem/469/B)|Codeforces|3|\n|<ul><li>- [ ] Done</li></ul>|43|[Milking cows](http://codeforces.com/problemset/problem/383/A)|Codeforces|3|\n|<ul><li>- [ ] Done</li></ul>|44|[Basketball Team](http://codeforces.com/problemset/problem/107/B)|Codeforces|4|\n|<ul><li>- [ ] Done</li></ul>|45|[Dynasty Puzzles](http://codeforces.com/problemset/problem/191/A)|Codeforces|4|\n|<ul><li>- [ ] Done</li></ul>|46|[Case of Matryoshkas](http://codeforces.com/problemset/problem/555/A)|Codeforces|4|\n|<ul><li>- [ ] Done</li></ul>|47|[Report](http://codeforces.com/problemset/problem/631/C)|Codeforces|4|\n|<ul><li>- [ ] Done</li></ul>|48|[Petya and Inequiations](http://codeforces.com/problemset/problem/111/A)|Codeforces|4|\n|<ul><li>- [ ] Done</li></ul>|49|[Guess Your Way Out!](http://codeforces.com/problemset/problem/507/C)|Codeforces|4|\n|<ul><li>- [ ] Done</li></ul>|50|[Naughty Stone Piles](http://codeforces.com/problemset/problem/226/B)|Codeforces|4|\n|<ul><li>- [ ] Done</li></ul>|51|[Guest From the Past](http://codeforces.com/problemset/problem/625/A)|Codeforces|4|\n|<ul><li>- [ ] Done</li></ul>|52|[Animals](http://codeforces.com/problemset/problem/35/D)|Codeforces|4|\n|<ul><li>- [ ] Done</li></ul>|53|[Replacement](http://codeforces.com/problemset/problem/570/C)|Codeforces|4|\n|<ul><li>- [ ] Done</li></ul>|54|[Inna and Sequence ](http://codeforces.com/problemset/problem/374/D)|Codeforces|4|\n|<ul><li>- [ ] Done</li></ul>|55|[Inna and Nine](http://codeforces.com/problemset/problem/374/B)|Codeforces|4|\n|<ul><li>- [ ] Done</li></ul>|56|[Zuma](http://codeforces.com/problemset/problem/607/B)|Codeforces|4|\n|<ul><li>- [ ] Done</li></ul>|57|[Rational Resistance](http://codeforces.com/problemset/problem/343/A)|Codeforces|4|\n|<ul><li>- [ ] Done</li></ul>|58|[Wilbur and Points](http://codeforces.com/problemset/problem/596/C)|Codeforces|4|\n|<ul><li>- [ ] Done</li></ul>|59|[Pythagorean Triples](http://codeforces.com/problemset/problem/707/C)|Codeforces|4|\n|<ul><li>- [ ] Done</li></ul>|60|[Ivan and Powers of Two](http://codeforces.com/problemset/problem/305/C)|Codeforces|4|\n|<ul><li>- [ ] Done</li></ul>|61|[Sereja and Swaps](http://codeforces.com/problemset/problem/425/A)|Codeforces|4|\n|<ul><li>- [ ] Done</li></ul>|62|[Magic Formulas](http://codeforces.com/problemset/problem/424/C)|Codeforces|4|\n|<ul><li>- [ ] Done</li></ul>|63|[Two Heaps](http://codeforces.com/problemset/problem/353/B)|Codeforces|4|\n|<ul><li>- [ ] Done</li></ul>|64|[Toy Sum](http://codeforces.com/problemset/problem/405/D)|Codeforces|4|\n|<ul><li>- [ ] Done</li></ul>|65|[Vasya and String](http://codeforces.com/problemset/problem/676/C)|Codeforces|4|\n|<ul><li>- [ ] Done</li></ul>|66|[Bear and Three Musketeers](http://codeforces.com/problemset/problem/574/B)|Codeforces|4|\n|<ul><li>- [ ] Done</li></ul>|67|[Jumping on Walls](http://codeforces.com/problemset/problem/198/B)|Codeforces|4|\n|<ul><li>- [ ] Done</li></ul>|68|[Guess a number!](http://codeforces.com/problemset/problem/416/A)|Codeforces|4|\n|<ul><li>- [ ] Done</li></ul>|69|[Divisible by Seven](http://codeforces.com/problemset/problem/375/A)|Codeforces|4|\n|<ul><li>- [ ] Done</li></ul>|70|[Planets](http://codeforces.com/problemset/problem/229/B)|Codeforces|4|\n|<ul><li>- [ ] Done</li></ul>|71|[Secret Combination](http://codeforces.com/problemset/problem/496/B)|Codeforces|4|\n|<ul><li>- [ ] Done</li></ul>|72|[Tree Construction](http://codeforces.com/problemset/problem/675/D)|Codeforces|4|\n|<ul><li>- [ ] Done</li></ul>|73|[Remainders Game](http://codeforces.com/problemset/problem/687/B)|Codeforces|4|\n|<ul><li>- [ ] Done</li></ul>|74|[Amr and Pins](http://codeforces.com/problemset/problem/507/B)|Codeforces|4|\n|<ul><li>- [ ] Done</li></ul>|75|[Gerald is into Art](http://codeforces.com/problemset/problem/560/B)|Codeforces|4|\n|<ul><li>- [ ] Done</li></ul>|76|[Kay and Snowflake](http://codeforces.com/problemset/problem/685/B)|Codeforces|4|\n|<ul><li>- [ ] Done</li></ul>|77|[DZY Loves Chemistry](http://codeforces.com/problemset/problem/445/B)|Codeforces|4|\n|<ul><li>- [ ] Done</li></ul>|78|[The Child and Zoo](http://codeforces.com/problemset/problem/437/D)|Codeforces|4|\n|<ul><li>- [ ] Done</li></ul>|79|[Vasiliy's Multiset](http://codeforces.com/problemset/problem/706/D)|Codeforces|4|\n|<ul><li>- [ ] Done</li></ul>|80|[Alyona and the Tree](http://codeforces.com/problemset/problem/682/C)|Codeforces|4|\n|<ul><li>- [ ] Done</li></ul>|81|[Polo the Penguin and XOR operation](http://codeforces.com/problemset/problem/288/C)|Codeforces|4|\n|<ul><li>- [ ] Done</li></ul>|82|[Unusual Product](http://codeforces.com/problemset/problem/405/C)|Codeforces|4|\n|<ul><li>- [ ] Done</li></ul>|83|[Chips](http://codeforces.com/problemset/problem/333/B)|Codeforces|4|\n|<ul><li>- [ ] Done</li></ul>|84|[Two Substrings](http://codeforces.com/problemset/problem/550/A)|Codeforces|4|\n|<ul><li>- [ ] Done</li></ul>|85|[The Big Race](http://codeforces.com/problemset/problem/592/C)|Codeforces|4|\n|<ul><li>- [ ] Done</li></ul>|86|[Borya and Hanabi](http://codeforces.com/problemset/problem/442/A)|Codeforces|4|\n|<ul><li>- [ ] Done</li></ul>|87|[Alice and Bob](http://codeforces.com/problemset/problem/346/A)|Codeforces|4|\n|<ul><li>- [ ] Done</li></ul>|88|[Bits](http://codeforces.com/problemset/problem/484/A)|Codeforces|4|\n|<ul><li>- [ ] Done</li></ul>|89|[The Values You Can Make](http://codeforces.com/problemset/problem/687/C)|Codeforces|4|\n|<ul><li>- [ ] Done</li></ul>|90|[Subsegments](http://codeforces.com/problemset/problem/69/E)|Codeforces|4|\n|<ul><li>- [ ] Done</li></ul>|91|[Alternating Current](http://codeforces.com/problemset/problem/343/B)|Codeforces|4|\n|<ul><li>- [ ] Done</li></ul>|92|[Ski Base](http://codeforces.com/problemset/problem/91/C)|Codeforces|5|\n|<ul><li>- [ ] Done</li></ul>|93|[Mike and Geometry Problem](http://codeforces.com/problemset/problem/689/E)|Codeforces|5|\n|<ul><li>- [ ] Done</li></ul>|94|[Police Station](http://codeforces.com/problemset/problem/208/C)|Codeforces|5|\n|<ul><li>- [ ] Done</li></ul>|95|[Maxim and Restaurant](http://codeforces.com/problemset/problem/261/B)|Codeforces|5|\n|<ul><li>- [ ] Done</li></ul>|96|[Xenia and Hamming](http://codeforces.com/problemset/problem/356/B)|Codeforces|5|\n|<ul><li>- [ ] Done</li></ul>|97|[The Road to Berland is Paved With Good Intentions](http://codeforces.com/problemset/problem/228/E)|Codeforces|5|\n|<ul><li>- [ ] Done</li></ul>|98|[Arthur and Table](http://codeforces.com/problemset/problem/557/C)|Codeforces|5|\n|<ul><li>- [ ] Done</li></ul>|99|[Queue](http://codeforces.com/problemset/problem/353/D)|Codeforces|5|\n|<ul><li>- [ ] Done</li></ul>|100|[Domino Principle](http://codeforces.com/problemset/problem/56/E)|Codeforces|5|\n|<ul><li>- [ ] Done</li></ul>|101|[Kleofáš and the n-thlon](http://codeforces.com/problemset/problem/601/C)|Codeforces|5|\n|<ul><li>- [ ] Done</li></ul>|102|[Little Elephant and Elections](http://codeforces.com/problemset/problem/258/B)|Codeforces|5|\n|<ul><li>- [ ] Done</li></ul>|103|[Wrong Floyd](http://codeforces.com/problemset/problem/350/E)|Codeforces|5|\n|<ul><li>- [ ] Done</li></ul>|104|[Free Market](http://codeforces.com/problemset/problem/364/B)|Codeforces|5|\n|<ul><li>- [ ] Done</li></ul>|105|[Strictly Positive Matrix](http://codeforces.com/problemset/problem/402/E)|Codeforces|5|\n|<ul><li>- [ ] Done</li></ul>|106|[Hydra](http://codeforces.com/problemset/problem/243/B)|Codeforces|5|\n|<ul><li>- [ ] Done</li></ul>|107|[Fox And Jumping](http://codeforces.com/problemset/problem/510/D)|Codeforces|5|\n|<ul><li>- [ ] Done</li></ul>|108|[Building Forest](http://codeforces.com/problemset/problem/195/E)|Codeforces|5|\n|<ul><li>- [ ] Done</li></ul>|109|[Vika and Segments](http://codeforces.com/problemset/problem/610/D)|Codeforces|5|\n|<ul><li>- [ ] Done</li></ul>|110|[Cipher](http://codeforces.com/problemset/problem/156/C)|Codeforces|5|\n|<ul><li>- [ ] Done</li></ul>|111|[Famil Door and Brackets](http://codeforces.com/problemset/problem/629/C)|Codeforces|5|\n|<ul><li>- [ ] Done</li></ul>|112|[Theseus and labyrinth](http://codeforces.com/problemset/problem/676/D)|Codeforces|5|\n|<ul><li>- [ ] Done</li></ul>|113|[3-cycles](http://codeforces.com/problemset/problem/41/E)|Codeforces|5|\n|<ul><li>- [ ] Done</li></ul>|114|[The table](http://codeforces.com/problemset/problem/226/D)|Codeforces|5|\n|<ul><li>- [ ] Done</li></ul>|115|[Relay Race](http://codeforces.com/problemset/problem/213/C)|Codeforces|5|\n|<ul><li>- [ ] Done</li></ul>|116|[Sereja and Periods](http://codeforces.com/problemset/problem/314/B)|Codeforces|5|\n|<ul><li>- [ ] Done</li></ul>|117|[Lucky Permutation](http://codeforces.com/problemset/problem/121/C)|Codeforces|5|\n|<ul><li>- [ ] Done</li></ul>|118|[Ilya and Roads](http://codeforces.com/problemset/problem/313/D)|Codeforces|5|\n|<ul><li>- [ ] Done</li></ul>|119|[Little Elephant and Furik and Rubik](http://codeforces.com/problemset/problem/204/C)|Codeforces|5|\n|<ul><li>- [ ] Done</li></ul>|120|[Running Track](http://codeforces.com/problemset/problem/615/C)|Codeforces|5|\n|<ul><li>- [ ] Done</li></ul>|121|[Minesweeper 1D](http://codeforces.com/problemset/problem/404/D)|Codeforces|5|\n|<ul><li>- [ ] Done</li></ul>|122|[Wizards and Huge Prize](http://codeforces.com/problemset/problem/167/B)|Codeforces|5|\n|<ul><li>- [ ] Done</li></ul>|123|[Spongebob and Squares](http://codeforces.com/problemset/problem/599/D)|Codeforces|5|\n|<ul><li>- [ ] Done</li></ul>|124|[Numbers](http://codeforces.com/problemset/problem/213/B)|Codeforces|5|\n|<ul><li>- [ ] Done</li></ul>|125|[Shortest Path](http://codeforces.com/problemset/problem/59/E)|Codeforces|5|\n|<ul><li>- [ ] Done</li></ul>|126|[Let's Play Osu!](http://codeforces.com/problemset/problem/235/B)|Codeforces|5|\n|<ul><li>- [ ] Done</li></ul>|127|[Triangles](http://codeforces.com/problemset/problem/229/C)|Codeforces|5|\n|<ul><li>- [ ] Done</li></ul>|128|[Lieges of Legendre](http://codeforces.com/problemset/problem/603/C)|Codeforces|5|\n|<ul><li>- [ ] Done</li></ul>|129|[Number With The Given Amount Of Divisors](http://codeforces.com/problemset/problem/27/E)|Codeforces|5|\n|<ul><li>- [ ] Done</li></ul>|130|[Iahub and Permutations](http://codeforces.com/problemset/problem/340/E)|Codeforces|5|\n|<ul><li>- [ ] Done</li></ul>|131|[Wet Shark and Blocks](http://codeforces.com/problemset/problem/621/E)|Codeforces|5|\n|<ul><li>- [ ] Done</li></ul>|132|[Number Transformation](http://codeforces.com/problemset/problem/251/C)|Codeforces|5|\n|<ul><li>- [ ] Done</li></ul>|133|[Invariance of Tree](http://codeforces.com/problemset/problem/576/B)|Codeforces|5|\n|<ul><li>- [ ] Done</li></ul>|134|[Alyona and Strings](http://codeforces.com/problemset/problem/682/D)|Codeforces|5|\n|<ul><li>- [ ] Done</li></ul>|135|[Gifts by the List](http://codeforces.com/problemset/problem/681/D)|Codeforces|5|\n|<ul><li>- [ ] Done</li></ul>|136|[Mushroom Gnomes - 2](http://codeforces.com/problemset/problem/138/C)|Codeforces|5|\n|<ul><li>- [ ] Done</li></ul>|137|[Messenger](http://codeforces.com/problemset/problem/631/D)|Codeforces|5|\n|<ul><li>- [ ] Done</li></ul>|138|[Lengthening Sticks](http://codeforces.com/problemset/problem/571/A)|Codeforces|5|\n|<ul><li>- [ ] Done</li></ul>|139|[Flawed Flow](http://codeforces.com/problemset/problem/269/C)|Codeforces|5|\n|<ul><li>- [ ] Done</li></ul>|140|[Love Triangles](http://codeforces.com/problemset/problem/553/C)|Codeforces|5|\n|<ul><li>- [ ] Done</li></ul>|141|[Random Task](http://codeforces.com/problemset/problem/431/D)|Codeforces|5|\n|<ul><li>- [ ] Done</li></ul>|142|[Modulo Sum](http://codeforces.com/problemset/problem/577/B)|Codeforces|5|\n|<ul><li>- [ ] Done</li></ul>|143|[Inna and Binary Logic](http://codeforces.com/problemset/problem/400/E)|Codeforces|5|\n|<ul><li>- [ ] Done</li></ul>|144|[Little Elephant and LCM](http://codeforces.com/problemset/problem/258/C)|Codeforces|5|\n|<ul><li>- [ ] Done</li></ul>|145|[Preparing for the Contest](http://codeforces.com/problemset/problem/377/B)|Codeforces|5|\n|<ul><li>- [ ] Done</li></ul>|146|[Minimization](http://codeforces.com/problemset/problem/571/B)|Codeforces|5|\n|<ul><li>- [ ] Done</li></ul>|147|[Two Strings](http://codeforces.com/problemset/problem/223/B)|Codeforces|5|\n|<ul><li>- [ ] Done</li></ul>|148|[Games with Rectangle](http://codeforces.com/problemset/problem/128/C)|Codeforces|5|\n|<ul><li>- [ ] Done</li></ul>|149|[Interesting Game](http://codeforces.com/problemset/problem/87/C)|Codeforces|5|\n|<ul><li>- [ ] Done</li></ul>|150|[Persistent Bookcase ](http://codeforces.com/problemset/problem/707/D)|Codeforces|5|\n|<ul><li>- [ ] Done</li></ul>|151|[Amr and Chemistry](http://codeforces.com/problemset/problem/558/C)|Codeforces|5|\n|<ul><li>- [ ] Done</li></ul>|152|[Apple Tree](http://codeforces.com/problemset/problem/348/B)|Codeforces|5|\n|<ul><li>- [ ] Done</li></ul>|153|[Friends and Subsequences](http://codeforces.com/problemset/problem/689/D)|Codeforces|5|\n|<ul><li>- [ ] Done</li></ul>|154|[Mishka and Interesting sum](http://codeforces.com/problemset/problem/703/D)|Codeforces|5|\n|<ul><li>- [ ] Done</li></ul>|155|[Time to Raid Cowavans](http://codeforces.com/problemset/problem/103/D)|Codeforces|5|\n|<ul><li>- [ ] Done</li></ul>|156|[Decoding Genome](http://codeforces.com/problemset/problem/222/E)|Codeforces|5|\n|<ul><li>- [ ] Done</li></ul>|157|[Points on Plane](http://codeforces.com/problemset/problem/576/C)|Codeforces|5|\n|<ul><li>- [ ] Done</li></ul>|158|[Vitaly and Cycle](http://codeforces.com/problemset/problem/557/D)|Codeforces|5|\n|<ul><li>- [ ] Done</li></ul>|159|[Babaei and Birthday Cake](http://codeforces.com/problemset/problem/629/D)|Codeforces|5|\n|<ul><li>- [ ] Done</li></ul>|160|[Money Transfers](http://codeforces.com/problemset/problem/675/C)|Codeforces|5|\n|<ul><li>- [ ] Done</li></ul>|161|[Compatible Numbers](http://codeforces.com/problemset/problem/165/E)|Codeforces|5|\n|<ul><li>- [ ] Done</li></ul>|162|[Infinite Inversions](http://codeforces.com/problemset/problem/540/E)|Codeforces|6|\n|<ul><li>- [ ] Done</li></ul>|163|[Cactus](http://codeforces.com/problemset/problem/231/E)|Codeforces|6|\n|<ul><li>- [ ] Done</li></ul>|164|[Yet Another Number Game](http://codeforces.com/problemset/problem/282/D)|Codeforces|6|\n|<ul><li>- [ ] Done</li></ul>|165|[Vasily the Bear and Beautiful Strings](http://codeforces.com/problemset/problem/336/D)|Codeforces|6|\n|<ul><li>- [ ] Done</li></ul>|166|[Empire Strikes Back](http://codeforces.com/problemset/problem/300/E)|Codeforces|6|\n|<ul><li>- [ ] Done</li></ul>|167|[George and Cards](http://codeforces.com/problemset/problem/387/E)|Codeforces|6|\n|<ul><li>- [ ] Done</li></ul>|168|[Game on Tree](http://codeforces.com/problemset/problem/280/C)|Codeforces|6|\n|<ul><li>- [ ] Done</li></ul>|169|[Graph Cutting](http://codeforces.com/problemset/problem/405/E)|Codeforces|6|\n|<ul><li>- [ ] Done</li></ul>|170|[Lovely Matrix](http://codeforces.com/problemset/problem/274/D)|Codeforces|6|\n|<ul><li>- [ ] Done</li></ul>|171|[Beautiful Road](http://codeforces.com/problemset/problem/87/D)|Codeforces|6|\n|<ul><li>- [ ] Done</li></ul>|172|[Vanya and Treasure](http://codeforces.com/problemset/problem/677/D)|Codeforces|6|\n|<ul><li>- [ ] Done</li></ul>|173|[Famil Door and Roads](http://codeforces.com/problemset/problem/629/E)|Codeforces|6|\n|<ul><li>- [ ] Done</li></ul>|174|[Acyclic Organic Compounds](http://codeforces.com/problemset/problem/601/D)|Codeforces|6|\n|<ul><li>- [ ] Done</li></ul>|175|[Thwarting Demonstrations](http://codeforces.com/problemset/problem/191/E)|Codeforces|6|\n|<ul><li>- [ ] Done</li></ul>|176|[Vanya and Brackets](http://codeforces.com/problemset/problem/552/E)|Codeforces|6|\n|<ul><li>- [ ] Done</li></ul>|177|[Game with Powers](http://codeforces.com/problemset/problem/317/D)|Codeforces|6|\n|<ul><li>- [ ] Done</li></ul>|178|[Edges in MST](http://codeforces.com/problemset/problem/160/D)|Codeforces|6|\n|<ul><li>- [ ] Done</li></ul>|179|[Anya and Cubes](http://codeforces.com/problemset/problem/525/E)|Codeforces|6|\n|<ul><li>- [ ] Done</li></ul>|180|[The Last Fight Between Human and AI](http://codeforces.com/problemset/problem/676/E)|Codeforces|6|\n|<ul><li>- [ ] Done</li></ul>|181|[Arthur and Brackets](http://codeforces.com/problemset/problem/508/E)|Codeforces|6|\n|<ul><li>- [ ] Done</li></ul>|182|[Trains and Statistic](http://codeforces.com/problemset/problem/675/E)|Codeforces|6|\n|<ul><li>- [ ] Done</li></ul>|183|[Devu and Flowers](http://codeforces.com/problemset/problem/451/E)|Codeforces|6|\n|<ul><li>- [ ] Done</li></ul>|184|[Minimum Modular](http://codeforces.com/problemset/problem/303/C)|Codeforces|7|\n|<ul><li>- [ ] Done</li></ul>|185|[Anniversary](http://codeforces.com/problemset/problem/226/C)|Codeforces|7|\n|<ul><li>- [ ] Done</li></ul>|186|[Axis Walking](http://codeforces.com/problemset/problem/327/E)|Codeforces|7|\n|<ul><li>- [ ] Done</li></ul>|187|[Lucky Arrays](http://codeforces.com/problemset/problem/256/E)|Codeforces|7|\n|<ul><li>- [ ] Done</li></ul>|188|[Working routine](http://codeforces.com/problemset/problem/706/E)|Codeforces|7|\n|<ul><li>- [ ] Done</li></ul>|189|[Linear Kingdom Races](http://codeforces.com/problemset/problem/115/E)|Codeforces|7|\n|<ul><li>- [ ] Done</li></ul>|190|[Little Elephant and Tree](http://codeforces.com/problemset/problem/258/E)|Codeforces|7|\n|<ul><li>- [ ] Done</li></ul>|191|[Lucky Array](http://codeforces.com/problemset/problem/121/E)|Codeforces|7|\n|<ul><li>- [ ] Done</li></ul>|192|[Alphabet Permutations](http://codeforces.com/problemset/problem/610/E)|Codeforces|7|\n|<ul><li>- [ ] Done</li></ul>|193|[Sereja and Sets](http://codeforces.com/problemset/problem/367/D)|Codeforces|7|\n|<ul><li>- [ ] Done</li></ul>|194|[President's Path](http://codeforces.com/problemset/problem/416/E)|Codeforces|7|\n|<ul><li>- [ ] Done</li></ul>|195|[Counter Attack](http://codeforces.com/problemset/problem/190/E)|Codeforces|7|\n|<ul><li>- [ ] Done</li></ul>|196|[Kefa and Watch](http://codeforces.com/problemset/problem/580/E)|Codeforces|7|\n|<ul><li>- [ ] Done</li></ul>|197|[Optimize!](http://codeforces.com/problemset/problem/338/E)|Codeforces|8|\n|<ul><li>- [ ] Done</li></ul>|198|[Choosing Subtree is Fun](http://codeforces.com/problemset/problem/372/D)|Codeforces|8|\n|<ul><li>- [ ] Done</li></ul>|199|[Blood Cousins Return](http://codeforces.com/problemset/problem/246/E)|Codeforces|8|\n|<ul><li>- [ ] Done</li></ul>|200|[Little Elephant and Strings](http://codeforces.com/problemset/problem/204/E)|Codeforces|9|\n"
  },
  {
    "path": "ladders/30. 2000 <= Codeforces Rating <= 2099 (Extra)/README.md",
    "content": "# Ladder Name: 30 - 2000 <= Codeforces Rating <= 2099 (Extra)\n## Description\n Extra problems for users satisfying this condition\n## Difficulty Level: 5\n\n| Checkbox | ID  | Problem Name | Online Judge | Difficulty |\n|---|:---:|:---:|---|---|\n|<ul><li>- [ ] Done</li></ul>|1|[George and Accommodation](http://codeforces.com/problemset/problem/467/A)|Codeforces|1|\n|<ul><li>- [ ] Done</li></ul>|2|[Opponents](http://codeforces.com/problemset/problem/688/A)|Codeforces|1|\n|<ul><li>- [ ] Done</li></ul>|3|[Patrick and Shopping](http://codeforces.com/problemset/problem/599/A)|Codeforces|1|\n|<ul><li>- [ ] Done</li></ul>|4|[Mashmokh and Lights](http://codeforces.com/problemset/problem/415/A)|Codeforces|1|\n|<ul><li>- [ ] Done</li></ul>|5|[Squats](http://codeforces.com/problemset/problem/424/A)|Codeforces|1|\n|<ul><li>- [ ] Done</li></ul>|6|[Sereja and Mugs](http://codeforces.com/problemset/problem/426/A)|Codeforces|1|\n|<ul><li>- [ ] Done</li></ul>|7|[Summer Camp](http://codeforces.com/problemset/problem/672/A)|Codeforces|1|\n|<ul><li>- [ ] Done</li></ul>|8|[Case of the Zeros and Ones](http://codeforces.com/problemset/problem/556/A)|Codeforces|2|\n|<ul><li>- [ ] Done</li></ul>|9|[Lucky String](http://codeforces.com/problemset/problem/110/B)|Codeforces|2|\n|<ul><li>- [ ] Done</li></ul>|10|[Queue on Bus Stop](http://codeforces.com/problemset/problem/435/A)|Codeforces|2|\n|<ul><li>- [ ] Done</li></ul>|11|[Currency System in Geraldion](http://codeforces.com/problemset/problem/560/A)|Codeforces|2|\n|<ul><li>- [ ] Done</li></ul>|12|[Saitama Destroys Hotel](http://codeforces.com/problemset/problem/608/A)|Codeforces|2|\n|<ul><li>- [ ] Done</li></ul>|13|[Lecture](http://codeforces.com/problemset/problem/499/B)|Codeforces|2|\n|<ul><li>- [ ] Done</li></ul>|14|[Uncowed Forces](http://codeforces.com/problemset/problem/604/A)|Codeforces|2|\n|<ul><li>- [ ] Done</li></ul>|15|[Drazil and Date](http://codeforces.com/problemset/problem/515/A)|Codeforces|2|\n|<ul><li>- [ ] Done</li></ul>|16|[Different is Good](http://codeforces.com/problemset/problem/672/B)|Codeforces|2|\n|<ul><li>- [ ] Done</li></ul>|17|[Case of Fake Numbers](http://codeforces.com/problemset/problem/556/B)|Codeforces|3|\n|<ul><li>- [ ] Done</li></ul>|18|[Plant](http://codeforces.com/problemset/problem/185/A)|Codeforces|3|\n|<ul><li>- [ ] Done</li></ul>|19|[Infinite Sequence](http://codeforces.com/problemset/problem/675/A)|Codeforces|3|\n|<ul><li>- [ ] Done</li></ul>|20|[K-special Tables](http://codeforces.com/problemset/problem/625/C)|Codeforces|3|\n|<ul><li>- [ ] Done</li></ul>|21|[Digital Counter](http://codeforces.com/problemset/problem/495/A)|Codeforces|3|\n|<ul><li>- [ ] Done</li></ul>|22|[Xor-tree](http://codeforces.com/problemset/problem/429/A)|Codeforces|3|\n|<ul><li>- [ ] Done</li></ul>|23|[Memory and Trident](http://codeforces.com/problemset/problem/712/B)|Codeforces|3|\n|<ul><li>- [ ] Done</li></ul>|24|[Vasya and Football](http://codeforces.com/problemset/problem/493/A)|Codeforces|3|\n|<ul><li>- [ ] Done</li></ul>|25|[Lucky Mask](http://codeforces.com/problemset/problem/146/B)|Codeforces|3|\n|<ul><li>- [ ] Done</li></ul>|26|[Alternative Thinking](http://codeforces.com/problemset/problem/603/A)|Codeforces|3|\n|<ul><li>- [ ] Done</li></ul>|27|[Tournament](http://codeforces.com/problemset/problem/27/B)|Codeforces|3|\n|<ul><li>- [ ] Done</li></ul>|28|[Sereja and Algorithm ](http://codeforces.com/problemset/problem/367/A)|Codeforces|3|\n|<ul><li>- [ ] Done</li></ul>|29|[Megacity](http://codeforces.com/problemset/problem/424/B)|Codeforces|3|\n|<ul><li>- [ ] Done</li></ul>|30|[Beautiful Paintings](http://codeforces.com/problemset/problem/651/B)|Codeforces|3|\n|<ul><li>- [ ] Done</li></ul>|31|[Petya and Square](http://codeforces.com/problemset/problem/112/B)|Codeforces|3|\n|<ul><li>- [ ] Done</li></ul>|32|[Valuable Resources](http://codeforces.com/problemset/problem/485/B)|Codeforces|3|\n|<ul><li>- [ ] Done</li></ul>|33|[Progress Bar](http://codeforces.com/problemset/problem/71/B)|Codeforces|3|\n|<ul><li>- [ ] Done</li></ul>|34|[Garland](http://codeforces.com/problemset/problem/408/B)|Codeforces|3|\n|<ul><li>- [ ] Done</li></ul>|35|[War of the Corporations](http://codeforces.com/problemset/problem/625/B)|Codeforces|3|\n|<ul><li>- [ ] Done</li></ul>|36|[Misha and Changing Handles](http://codeforces.com/problemset/problem/501/B)|Codeforces|3|\n|<ul><li>- [ ] Done</li></ul>|37|[Milking cows](http://codeforces.com/problemset/problem/383/A)|Codeforces|3|\n|<ul><li>- [ ] Done</li></ul>|38|[Sereja and Mirroring](http://codeforces.com/problemset/problem/426/B)|Codeforces|3|\n|<ul><li>- [ ] Done</li></ul>|39|[The Child and Homework](http://codeforces.com/problemset/problem/437/A)|Codeforces|3|\n|<ul><li>- [ ] Done</li></ul>|40|[Vasya and String](http://codeforces.com/problemset/problem/676/C)|Codeforces|4|\n|<ul><li>- [ ] Done</li></ul>|41|[Pyramid of Glasses](http://codeforces.com/problemset/problem/676/B)|Codeforces|4|\n|<ul><li>- [ ] Done</li></ul>|42|[Restoring Painting](http://codeforces.com/problemset/problem/675/B)|Codeforces|4|\n|<ul><li>- [ ] Done</li></ul>|43|[Petya and Inequiations](http://codeforces.com/problemset/problem/111/A)|Codeforces|4|\n|<ul><li>- [ ] Done</li></ul>|44|[Buns](http://codeforces.com/problemset/problem/106/C)|Codeforces|4|\n|<ul><li>- [ ] Done</li></ul>|45|[Sereja and Prefixes](http://codeforces.com/problemset/problem/380/A)|Codeforces|4|\n|<ul><li>- [ ] Done</li></ul>|46|[Cthulhu](http://codeforces.com/problemset/problem/103/B)|Codeforces|4|\n|<ul><li>- [ ] Done</li></ul>|47|[Chris and Magic Square](http://codeforces.com/problemset/problem/711/B)|Codeforces|4|\n|<ul><li>- [ ] Done</li></ul>|48|[Logo Turtle](http://codeforces.com/problemset/problem/132/C)|Codeforces|4|\n|<ul><li>- [ ] Done</li></ul>|49|[Moodular Arithmetic](http://codeforces.com/problemset/problem/603/B)|Codeforces|4|\n|<ul><li>- [ ] Done</li></ul>|50|[Vasiliy's Multiset](http://codeforces.com/problemset/problem/706/D)|Codeforces|4|\n|<ul><li>- [ ] Done</li></ul>|51|[Message](http://codeforces.com/problemset/problem/156/A)|Codeforces|4|\n|<ul><li>- [ ] Done</li></ul>|52|[24 Game](http://codeforces.com/problemset/problem/468/A)|Codeforces|4|\n|<ul><li>- [ ] Done</li></ul>|53|[Mike and Chocolate Thieves](http://codeforces.com/problemset/problem/689/C)|Codeforces|4|\n|<ul><li>- [ ] Done</li></ul>|54|[Peter and Snow Blower](http://codeforces.com/problemset/problem/613/A)|Codeforces|4|\n|<ul><li>- [ ] Done</li></ul>|55|[Secret Combination](http://codeforces.com/problemset/problem/496/B)|Codeforces|4|\n|<ul><li>- [ ] Done</li></ul>|56|[Hometask](http://codeforces.com/problemset/problem/154/A)|Codeforces|4|\n|<ul><li>- [ ] Done</li></ul>|57|[Alice and Bob](http://codeforces.com/problemset/problem/346/A)|Codeforces|4|\n|<ul><li>- [ ] Done</li></ul>|58|[Memory and De-Evolution](http://codeforces.com/problemset/problem/712/C)|Codeforces|4|\n|<ul><li>- [ ] Done</li></ul>|59|[Levko and Array Recovery](http://codeforces.com/problemset/problem/360/A)|Codeforces|4|\n|<ul><li>- [ ] Done</li></ul>|60|[Vasya and Wrestling](http://codeforces.com/problemset/problem/493/B)|Codeforces|4|\n|<ul><li>- [ ] Done</li></ul>|61|[Kay and Snowflake](http://codeforces.com/problemset/problem/685/B)|Codeforces|4|\n|<ul><li>- [ ] Done</li></ul>|62|[Alternating Current](http://codeforces.com/problemset/problem/343/B)|Codeforces|4|\n|<ul><li>- [ ] Done</li></ul>|63|[Coloring Trees](http://codeforces.com/problemset/problem/711/C)|Codeforces|4|\n|<ul><li>- [ ] Done</li></ul>|64|[Multitasking](http://codeforces.com/problemset/problem/384/B)|Codeforces|4|\n|<ul><li>- [ ] Done</li></ul>|65|[History](http://codeforces.com/problemset/problem/137/C)|Codeforces|4|\n|<ul><li>- [ ] Done</li></ul>|66|[Zuma](http://codeforces.com/problemset/problem/607/B)|Codeforces|4|\n|<ul><li>- [ ] Done</li></ul>|67|[Fish Weight](http://codeforces.com/problemset/problem/297/B)|Codeforces|4|\n|<ul><li>- [ ] Done</li></ul>|68|[Sereja and Swaps](http://codeforces.com/problemset/problem/425/A)|Codeforces|4|\n|<ul><li>- [ ] Done</li></ul>|69|[The Child and Set](http://codeforces.com/problemset/problem/437/B)|Codeforces|4|\n|<ul><li>- [ ] Done</li></ul>|70|[Tavas and Karafs](http://codeforces.com/problemset/problem/535/C)|Codeforces|4|\n|<ul><li>- [ ] Done</li></ul>|71|[Once Again...](http://codeforces.com/problemset/problem/582/B)|Codeforces|4|\n|<ul><li>- [ ] Done</li></ul>|72|[Win or Freeze](http://codeforces.com/problemset/problem/150/A)|Codeforces|4|\n|<ul><li>- [ ] Done</li></ul>|73|[More Cowbell](http://codeforces.com/problemset/problem/604/B)|Codeforces|4|\n|<ul><li>- [ ] Done</li></ul>|74|[World Tour](http://codeforces.com/problemset/problem/666/B)|Codeforces|4|\n|<ul><li>- [ ] Done</li></ul>|75|[Chip 'n Dale Rescue Rangers](http://codeforces.com/problemset/problem/590/B)|Codeforces|4|\n|<ul><li>- [ ] Done</li></ul>|76|[Pythagorean Triples](http://codeforces.com/problemset/problem/707/C)|Codeforces|4|\n|<ul><li>- [ ] Done</li></ul>|77|[Subsegments](http://codeforces.com/problemset/problem/69/E)|Codeforces|4|\n|<ul><li>- [ ] Done</li></ul>|78|[Divisible by Seven](http://codeforces.com/problemset/problem/375/A)|Codeforces|4|\n|<ul><li>- [ ] Done</li></ul>|79|[The Two Routes](http://codeforces.com/problemset/problem/601/A)|Codeforces|4|\n|<ul><li>- [ ] Done</li></ul>|80|[Lipshitz Sequence](http://codeforces.com/problemset/problem/601/B)|Codeforces|4|\n|<ul><li>- [ ] Done</li></ul>|81|[Inna and Sequence ](http://codeforces.com/problemset/problem/374/D)|Codeforces|4|\n|<ul><li>- [ ] Done</li></ul>|82|[Theseus and labyrinth](http://codeforces.com/problemset/problem/676/D)|Codeforces|5|\n|<ul><li>- [ ] Done</li></ul>|83|[Table](http://codeforces.com/problemset/problem/232/B)|Codeforces|5|\n|<ul><li>- [ ] Done</li></ul>|84|[Gifts by the List](http://codeforces.com/problemset/problem/681/D)|Codeforces|5|\n|<ul><li>- [ ] Done</li></ul>|85|[Fragile Bridges](http://codeforces.com/problemset/problem/201/C)|Codeforces|5|\n|<ul><li>- [ ] Done</li></ul>|86|[Minimization](http://codeforces.com/problemset/problem/571/B)|Codeforces|5|\n|<ul><li>- [ ] Done</li></ul>|87|[Lengthening Sticks](http://codeforces.com/problemset/problem/571/A)|Codeforces|5|\n|<ul><li>- [ ] Done</li></ul>|88|[Sereja and Periods](http://codeforces.com/problemset/problem/314/B)|Codeforces|5|\n|<ul><li>- [ ] Done</li></ul>|89|[Anton and Ira](http://codeforces.com/problemset/problem/584/E)|Codeforces|5|\n|<ul><li>- [ ] Done</li></ul>|90|[Vika and Segments](http://codeforces.com/problemset/problem/610/D)|Codeforces|5|\n|<ul><li>- [ ] Done</li></ul>|91|[Karen and Supermarket](http://codeforces.com/problemset/problem/815/C)|Codeforces|5|\n|<ul><li>- [ ] Done</li></ul>|92|[Happy Tree Party](http://codeforces.com/problemset/problem/593/D)|Codeforces|5|\n|<ul><li>- [ ] Done</li></ul>|93|[Number Transformation](http://codeforces.com/problemset/problem/251/C)|Codeforces|5|\n|<ul><li>- [ ] Done</li></ul>|94|[Invariance of Tree](http://codeforces.com/problemset/problem/576/B)|Codeforces|5|\n|<ul><li>- [ ] Done</li></ul>|95|[Little Elephant and Shifts](http://codeforces.com/problemset/problem/220/C)|Codeforces|5|\n|<ul><li>- [ ] Done</li></ul>|96|[Queue](http://codeforces.com/problemset/problem/353/D)|Codeforces|5|\n|<ul><li>- [ ] Done</li></ul>|97|[Ksenia and Pawns](http://codeforces.com/problemset/problem/382/D)|Codeforces|5|\n|<ul><li>- [ ] Done</li></ul>|98|[Table Compression](http://codeforces.com/problemset/problem/650/C)|Codeforces|5|\n|<ul><li>- [ ] Done</li></ul>|99|[Petya and Spiders](http://codeforces.com/problemset/problem/111/C)|Codeforces|5|\n|<ul><li>- [ ] Done</li></ul>|100|[Free Market](http://codeforces.com/problemset/problem/364/B)|Codeforces|5|\n|<ul><li>- [ ] Done</li></ul>|101|[Relay Race](http://codeforces.com/problemset/problem/213/C)|Codeforces|5|\n|<ul><li>- [ ] Done</li></ul>|102|[Flawed Flow](http://codeforces.com/problemset/problem/269/C)|Codeforces|5|\n|<ul><li>- [ ] Done</li></ul>|103|[Complete The Graph](http://codeforces.com/problemset/problem/715/B)|Codeforces|5|\n|<ul><li>- [ ] Done</li></ul>|104|[Coloring Brackets](http://codeforces.com/problemset/problem/149/D)|Codeforces|5|\n|<ul><li>- [ ] Done</li></ul>|105|[Ilya and Roads](http://codeforces.com/problemset/problem/313/D)|Codeforces|5|\n|<ul><li>- [ ] Done</li></ul>|106|[Lucky Numbers](http://codeforces.com/problemset/problem/95/B)|Codeforces|5|\n|<ul><li>- [ ] Done</li></ul>|107|[Compartments](http://codeforces.com/problemset/problem/356/C)|Codeforces|5|\n|<ul><li>- [ ] Done</li></ul>|108|[Xenia and Hamming](http://codeforces.com/problemset/problem/356/B)|Codeforces|5|\n|<ul><li>- [ ] Done</li></ul>|109|[Little Elephant and Furik and Rubik](http://codeforces.com/problemset/problem/204/C)|Codeforces|5|\n|<ul><li>- [ ] Done</li></ul>|110|[Inna and Binary Logic](http://codeforces.com/problemset/problem/400/E)|Codeforces|5|\n|<ul><li>- [ ] Done</li></ul>|111|[The Road to Berland is Paved With Good Intentions](http://codeforces.com/problemset/problem/228/E)|Codeforces|5|\n|<ul><li>- [ ] Done</li></ul>|112|[Maxim and Restaurant](http://codeforces.com/problemset/problem/261/B)|Codeforces|5|\n|<ul><li>- [ ] Done</li></ul>|113|[Spongebob and Squares](http://codeforces.com/problemset/problem/599/D)|Codeforces|5|\n|<ul><li>- [ ] Done</li></ul>|114|[The table](http://codeforces.com/problemset/problem/226/D)|Codeforces|5|\n|<ul><li>- [ ] Done</li></ul>|115|[Numbers](http://codeforces.com/problemset/problem/213/B)|Codeforces|5|\n|<ul><li>- [ ] Done</li></ul>|116|[Vladik and cards](http://codeforces.com/problemset/problem/743/E)|Codeforces|5|\n|<ul><li>- [ ] Done</li></ul>|117|[Partial Sums](http://codeforces.com/problemset/problem/223/C)|Codeforces|5|\n|<ul><li>- [ ] Done</li></ul>|118|[Points on Plane](http://codeforces.com/problemset/problem/576/C)|Codeforces|5|\n|<ul><li>- [ ] Done</li></ul>|119|[Running Track](http://codeforces.com/problemset/problem/615/C)|Codeforces|5|\n|<ul><li>- [ ] Done</li></ul>|120|[Alyona and Strings](http://codeforces.com/problemset/problem/682/D)|Codeforces|5|\n|<ul><li>- [ ] Done</li></ul>|121|[Famil Door and Brackets](http://codeforces.com/problemset/problem/629/C)|Codeforces|5|\n|<ul><li>- [ ] Done</li></ul>|122|[Preparing for the Contest](http://codeforces.com/problemset/problem/377/B)|Codeforces|5|\n|<ul><li>- [ ] Done</li></ul>|123|[Strictly Positive Matrix](http://codeforces.com/problemset/problem/402/E)|Codeforces|5|\n|<ul><li>- [ ] Done</li></ul>|124|[Compatible Numbers](http://codeforces.com/problemset/problem/165/E)|Codeforces|5|\n|<ul><li>- [ ] Done</li></ul>|125|[Love Triangles](http://codeforces.com/problemset/problem/553/C)|Codeforces|5|\n|<ul><li>- [ ] Done</li></ul>|126|[Police Patrol](http://codeforces.com/problemset/problem/427/E)|Codeforces|5|\n|<ul><li>- [ ] Done</li></ul>|127|[Time to Raid Cowavans](http://codeforces.com/problemset/problem/103/D)|Codeforces|5|\n|<ul><li>- [ ] Done</li></ul>|128|[Directed Roads](http://codeforces.com/problemset/problem/711/D)|Codeforces|5|\n|<ul><li>- [ ] Done</li></ul>|129|[Money Transfers](http://codeforces.com/problemset/problem/675/C)|Codeforces|5|\n|<ul><li>- [ ] Done</li></ul>|130|[Messenger](http://codeforces.com/problemset/problem/631/D)|Codeforces|5|\n|<ul><li>- [ ] Done</li></ul>|131|[Mishka and Interesting sum](http://codeforces.com/problemset/problem/703/D)|Codeforces|5|\n|<ul><li>- [ ] Done</li></ul>|132|[Two Strings](http://codeforces.com/problemset/problem/223/B)|Codeforces|5|\n|<ul><li>- [ ] Done</li></ul>|133|[Persistent Bookcase ](http://codeforces.com/problemset/problem/707/D)|Codeforces|5|\n|<ul><li>- [ ] Done</li></ul>|134|[Ring Road 2](http://codeforces.com/problemset/problem/27/D)|Codeforces|5|\n|<ul><li>- [ ] Done</li></ul>|135|[Lucky Number Representation](http://codeforces.com/problemset/problem/354/E)|Codeforces|5|\n|<ul><li>- [ ] Done</li></ul>|136|[Little Elephant and LCM](http://codeforces.com/problemset/problem/258/C)|Codeforces|5|\n|<ul><li>- [ ] Done</li></ul>|137|[Superior Periodic Subarrays](http://codeforces.com/problemset/problem/582/C)|Codeforces|5|\n|<ul><li>- [ ] Done</li></ul>|138|[Pluses everywhere](http://codeforces.com/problemset/problem/520/E)|Codeforces|5|\n|<ul><li>- [ ] Done</li></ul>|139|[Cubes](http://codeforces.com/problemset/problem/520/D)|Codeforces|5|\n|<ul><li>- [ ] Done</li></ul>|140|[Friends and Subsequences](http://codeforces.com/problemset/problem/689/D)|Codeforces|5|\n|<ul><li>- [ ] Done</li></ul>|141|[Kleofáš and the n-thlon](http://codeforces.com/problemset/problem/601/C)|Codeforces|5|\n|<ul><li>- [ ] Done</li></ul>|142|[Mike and Geometry Problem](http://codeforces.com/problemset/problem/689/E)|Codeforces|5|\n|<ul><li>- [ ] Done</li></ul>|143|[Lieges of Legendre](http://codeforces.com/problemset/problem/603/C)|Codeforces|5|\n|<ul><li>- [ ] Done</li></ul>|144|[Apple Tree](http://codeforces.com/problemset/problem/348/B)|Codeforces|5|\n|<ul><li>- [ ] Done</li></ul>|145|[Sonya and Problem Wihtout a Legend](http://codeforces.com/problemset/problem/713/C)|Codeforces|5|\n|<ul><li>- [ ] Done</li></ul>|146|[Ant Man](http://codeforces.com/problemset/problem/704/B)|Codeforces|6|\n|<ul><li>- [ ] Done</li></ul>|147|[Alyona and towers](http://codeforces.com/problemset/problem/739/C)|Codeforces|6|\n|<ul><li>- [ ] Done</li></ul>|148|[Double Happiness](http://codeforces.com/problemset/problem/113/C)|Codeforces|6|\n|<ul><li>- [ ] Done</li></ul>|149|[Lovely Matrix](http://codeforces.com/problemset/problem/274/D)|Codeforces|6|\n|<ul><li>- [ ] Done</li></ul>|150|[Devu and Flowers](http://codeforces.com/problemset/problem/451/E)|Codeforces|6|\n|<ul><li>- [ ] Done</li></ul>|151|[George and Cards](http://codeforces.com/problemset/problem/387/E)|Codeforces|6|\n|<ul><li>- [ ] Done</li></ul>|152|[Anya and Cubes](http://codeforces.com/problemset/problem/525/E)|Codeforces|6|\n|<ul><li>- [ ] Done</li></ul>|153|[Game on Tree](http://codeforces.com/problemset/problem/280/C)|Codeforces|6|\n|<ul><li>- [ ] Done</li></ul>|154|[Garlands](http://codeforces.com/problemset/problem/707/E)|Codeforces|6|\n|<ul><li>- [ ] Done</li></ul>|155|[Codeword](http://codeforces.com/problemset/problem/666/C)|Codeforces|6|\n|<ul><li>- [ ] Done</li></ul>|156|[Game with Powers](http://codeforces.com/problemset/problem/317/D)|Codeforces|6|\n|<ul><li>- [ ] Done</li></ul>|157|[Graph Cutting](http://codeforces.com/problemset/problem/405/E)|Codeforces|6|\n|<ul><li>- [ ] Done</li></ul>|158|[Wilbur and Trees](http://codeforces.com/problemset/problem/596/D)|Codeforces|6|\n|<ul><li>- [ ] Done</li></ul>|159|[Thwarting Demonstrations](http://codeforces.com/problemset/problem/191/E)|Codeforces|6|\n|<ul><li>- [ ] Done</li></ul>|160|[Trains and Statistic](http://codeforces.com/problemset/problem/675/E)|Codeforces|6|\n|<ul><li>- [ ] Done</li></ul>|161|[ZS and The Birthday Paradox](http://codeforces.com/problemset/problem/711/E)|Codeforces|6|\n|<ul><li>- [ ] Done</li></ul>|162|[Arthur and Brackets](http://codeforces.com/problemset/problem/508/E)|Codeforces|6|\n|<ul><li>- [ ] Done</li></ul>|163|[Acyclic Organic Compounds](http://codeforces.com/problemset/problem/601/D)|Codeforces|6|\n|<ul><li>- [ ] Done</li></ul>|164|[Dividing Kingdom II](http://codeforces.com/problemset/problem/687/D)|Codeforces|7|\n|<ul><li>- [ ] Done</li></ul>|165|[Animals and Puzzle](http://codeforces.com/problemset/problem/713/D)|Codeforces|7|\n|<ul><li>- [ ] Done</li></ul>|166|[Splitting the Uniqueness](http://codeforces.com/problemset/problem/297/C)|Codeforces|7|\n|<ul><li>- [ ] Done</li></ul>|167|[Curious Array](http://codeforces.com/problemset/problem/407/C)|Codeforces|7|\n|<ul><li>- [ ] Done</li></ul>|168|[Igloo Skyscraper](http://codeforces.com/problemset/problem/91/E)|Codeforces|7|\n|<ul><li>- [ ] Done</li></ul>|169|[Clearing Up](http://codeforces.com/problemset/problem/141/E)|Codeforces|7|\n|<ul><li>- [ ] Done</li></ul>|170|[President's Path](http://codeforces.com/problemset/problem/416/E)|Codeforces|7|\n|<ul><li>- [ ] Done</li></ul>|171|[String](http://codeforces.com/problemset/problem/123/D)|Codeforces|7|\n|<ul><li>- [ ] Done</li></ul>|172|[Painting Square](http://codeforces.com/problemset/problem/300/D)|Codeforces|7|\n|<ul><li>- [ ] Done</li></ul>|173|[Alphabet Permutations](http://codeforces.com/problemset/problem/610/E)|Codeforces|7|\n|<ul><li>- [ ] Done</li></ul>|174|[Kefa and Watch](http://codeforces.com/problemset/problem/580/E)|Codeforces|7|\n|<ul><li>- [ ] Done</li></ul>|175|[Sereja and Sets](http://codeforces.com/problemset/problem/425/E)|Codeforces|7|\n|<ul><li>- [ ] Done</li></ul>|176|[Game with Strings](http://codeforces.com/problemset/problem/354/B)|Codeforces|7|\n|<ul><li>- [ ] Done</li></ul>|177|[Clues](http://codeforces.com/problemset/problem/156/D)|Codeforces|7|\n|<ul><li>- [ ] Done</li></ul>|178|[Counter Attack](http://codeforces.com/problemset/problem/190/E)|Codeforces|7|\n|<ul><li>- [ ] Done</li></ul>|179|[Ilya and Two Numbers](http://codeforces.com/problemset/problem/313/E)|Codeforces|7|\n|<ul><li>- [ ] Done</li></ul>|180|[Lucky Country](http://codeforces.com/problemset/problem/95/E)|Codeforces|7|\n|<ul><li>- [ ] Done</li></ul>|181|[Interval Cubing](http://codeforces.com/problemset/problem/311/D)|Codeforces|7|\n|<ul><li>- [ ] Done</li></ul>|182|[Little Victor and Set](http://codeforces.com/problemset/problem/460/D)|Codeforces|7|\n|<ul><li>- [ ] Done</li></ul>|183|[Minimum Modular](http://codeforces.com/problemset/problem/303/C)|Codeforces|7|\n|<ul><li>- [ ] Done</li></ul>|184|[Sandy and Nuts](http://codeforces.com/problemset/problem/599/E)|Codeforces|7|\n|<ul><li>- [ ] Done</li></ul>|185|[Sereja and Straight Lines](http://codeforces.com/problemset/problem/314/D)|Codeforces|7|\n|<ul><li>- [ ] Done</li></ul>|186|[Linear Kingdom Races](http://codeforces.com/problemset/problem/115/E)|Codeforces|7|\n|<ul><li>- [ ] Done</li></ul>|187|[Yaroslav and Points](http://codeforces.com/problemset/problem/295/E)|Codeforces|7|\n|<ul><li>- [ ] Done</li></ul>|188|[Arpa’s overnight party and Mehrdad’s silent entering](http://codeforces.com/problemset/problem/741/C)|Codeforces|7|\n|<ul><li>- [ ] Done</li></ul>|189|[Iahub and Xors](http://codeforces.com/problemset/problem/341/D)|Codeforces|7|\n|<ul><li>- [ ] Done</li></ul>|190|[Working routine](http://codeforces.com/problemset/problem/706/E)|Codeforces|7|\n|<ul><li>- [ ] Done</li></ul>|191|[Sereja and Sets](http://codeforces.com/problemset/problem/367/D)|Codeforces|7|\n|<ul><li>- [ ] Done</li></ul>|192|[Levko and Strings](http://codeforces.com/problemset/problem/360/C)|Codeforces|7|\n|<ul><li>- [ ] Done</li></ul>|193|[Product Sum](http://codeforces.com/problemset/problem/631/E)|Codeforces|7|\n|<ul><li>- [ ] Done</li></ul>|194|[Little Elephant and Tree](http://codeforces.com/problemset/problem/258/E)|Codeforces|7|\n|<ul><li>- [ ] Done</li></ul>|195|[Maze](http://codeforces.com/problemset/problem/123/E)|Codeforces|8|\n|<ul><li>- [ ] Done</li></ul>|196|[Blood Cousins Return](http://codeforces.com/problemset/problem/246/E)|Codeforces|8|\n|<ul><li>- [ ] Done</li></ul>|197|[Drazil and Morning Exercise](http://codeforces.com/problemset/problem/516/D)|Codeforces|8|\n|<ul><li>- [ ] Done</li></ul>|198|[Jeff and Removing Periods](http://codeforces.com/problemset/problem/351/D)|Codeforces|8|\n|<ul><li>- [ ] Done</li></ul>|199|[Bags and Coins](http://codeforces.com/problemset/problem/356/D)|Codeforces|8|\n|<ul><li>- [ ] Done</li></ul>|200|[Choosing Subtree is Fun](http://codeforces.com/problemset/problem/372/D)|Codeforces|8|\n"
  },
  {
    "path": "ladders/31. 2100 <= Codeforces Rating <= 2199 (Extra)/README.md",
    "content": "# Ladder Name: 31 - 2100 <= Codeforces Rating <= 2199 (Extra)\n## Description\n Extra problems for users satisfying this condition\n## Difficulty Level: 5\n\n| Checkbox | ID  | Problem Name | Online Judge | Difficulty |\n|---|:---:|:---:|---|---|\n|<ul><li>- [ ] Done</li></ul>|1|[Toy Army](http://codeforces.com/problemset/problem/84/A)|Codeforces|1|\n|<ul><li>- [ ] Done</li></ul>|2|[Spit Problem](http://codeforces.com/problemset/problem/29/A)|Codeforces|1|\n|<ul><li>- [ ] Done</li></ul>|3|[Reconnaissance](http://codeforces.com/problemset/problem/32/A)|Codeforces|1|\n|<ul><li>- [ ] Done</li></ul>|4|[Circle Line](http://codeforces.com/problemset/problem/278/A)|Codeforces|1|\n|<ul><li>- [ ] Done</li></ul>|5|[George and Accommodation](http://codeforces.com/problemset/problem/467/A)|Codeforces|1|\n|<ul><li>- [ ] Done</li></ul>|6|[Memory and Crow](http://codeforces.com/problemset/problem/712/A)|Codeforces|1|\n|<ul><li>- [ ] Done</li></ul>|7|[Wizards' Duel](http://codeforces.com/problemset/problem/591/A)|Codeforces|1|\n|<ul><li>- [ ] Done</li></ul>|8|[Rewards](http://codeforces.com/problemset/problem/448/A)|Codeforces|1|\n|<ul><li>- [ ] Done</li></ul>|9|[Crazy Computer](http://codeforces.com/problemset/problem/716/A)|Codeforces|1|\n|<ul><li>- [ ] Done</li></ul>|10|[Multiplication Table](http://codeforces.com/problemset/problem/577/A)|Codeforces|2|\n|<ul><li>- [ ] Done</li></ul>|11|[Beru-taxi](http://codeforces.com/problemset/problem/706/A)|Codeforces|2|\n|<ul><li>- [ ] Done</li></ul>|12|[Joysticks](http://codeforces.com/problemset/problem/651/A)|Codeforces|2|\n|<ul><li>- [ ] Done</li></ul>|13|[Case of the Zeros and Ones](http://codeforces.com/problemset/problem/556/A)|Codeforces|2|\n|<ul><li>- [ ] Done</li></ul>|14|[Lovely Palindromes](http://codeforces.com/problemset/problem/688/B)|Codeforces|2|\n|<ul><li>- [ ] Done</li></ul>|15|[A and B and Chess](http://codeforces.com/problemset/problem/519/A)|Codeforces|2|\n|<ul><li>- [ ] Done</li></ul>|16|[Tavas and Nafas](http://codeforces.com/problemset/problem/535/A)|Codeforces|2|\n|<ul><li>- [ ] Done</li></ul>|17|[Drazil and Date](http://codeforces.com/problemset/problem/515/A)|Codeforces|2|\n|<ul><li>- [ ] Done</li></ul>|18|[Lecture](http://codeforces.com/problemset/problem/499/B)|Codeforces|2|\n|<ul><li>- [ ] Done</li></ul>|19|[Digital Counter](http://codeforces.com/problemset/problem/495/A)|Codeforces|3|\n|<ul><li>- [ ] Done</li></ul>|20|[Random Teams](http://codeforces.com/problemset/problem/478/B)|Codeforces|3|\n|<ul><li>- [ ] Done</li></ul>|21|[Memory and Trident](http://codeforces.com/problemset/problem/712/B)|Codeforces|3|\n|<ul><li>- [ ] Done</li></ul>|22|[Magic Spheres](http://codeforces.com/problemset/problem/606/A)|Codeforces|3|\n|<ul><li>- [ ] Done</li></ul>|23|[Case of Fake Numbers](http://codeforces.com/problemset/problem/556/B)|Codeforces|3|\n|<ul><li>- [ ] Done</li></ul>|24|[Fedor and New Game](http://codeforces.com/problemset/problem/467/B)|Codeforces|3|\n|<ul><li>- [ ] Done</li></ul>|25|[Filya and Homework](http://codeforces.com/problemset/problem/714/B)|Codeforces|3|\n|<ul><li>- [ ] Done</li></ul>|26|[Xor-tree](http://codeforces.com/problemset/problem/429/A)|Codeforces|3|\n|<ul><li>- [ ] Done</li></ul>|27|[NP-Hard Problem](http://codeforces.com/problemset/problem/687/A)|Codeforces|3|\n|<ul><li>- [ ] Done</li></ul>|28|[A and B and Compilation Errors](http://codeforces.com/problemset/problem/519/B)|Codeforces|3|\n|<ul><li>- [ ] Done</li></ul>|29|[Tavas and SaDDas](http://codeforces.com/problemset/problem/535/B)|Codeforces|3|\n|<ul><li>- [ ] Done</li></ul>|30|[Two Bases](http://codeforces.com/problemset/problem/602/A)|Codeforces|3|\n|<ul><li>- [ ] Done</li></ul>|31|[Rebranding](http://codeforces.com/problemset/problem/591/B)|Codeforces|3|\n|<ul><li>- [ ] Done</li></ul>|32|[Lucky Permutation Triple](http://codeforces.com/problemset/problem/303/A)|Codeforces|3|\n|<ul><li>- [ ] Done</li></ul>|33|[Meeting of Old Friends](http://codeforces.com/problemset/problem/714/A)|Codeforces|3|\n|<ul><li>- [ ] Done</li></ul>|34|[A and B and Team Training](http://codeforces.com/problemset/problem/519/C)|Codeforces|3|\n|<ul><li>- [ ] Done</li></ul>|35|[Square](http://codeforces.com/problemset/problem/194/B)|Codeforces|3|\n|<ul><li>- [ ] Done</li></ul>|36|[Sorting Railway Cars](http://codeforces.com/problemset/problem/605/A)|Codeforces|3|\n|<ul><li>- [ ] Done</li></ul>|37|[Chat Online](http://codeforces.com/problemset/problem/469/B)|Codeforces|3|\n|<ul><li>- [ ] Done</li></ul>|38|[Diverse Permutation](http://codeforces.com/problemset/problem/482/A)|Codeforces|3|\n|<ul><li>- [ ] Done</li></ul>|39|[Alice and Bob](http://codeforces.com/problemset/problem/346/A)|Codeforces|4|\n|<ul><li>- [ ] Done</li></ul>|40|[Vasya and the Bus](http://codeforces.com/problemset/problem/190/A)|Codeforces|4|\n|<ul><li>- [ ] Done</li></ul>|41|[Sereja and Prefixes](http://codeforces.com/problemset/problem/380/A)|Codeforces|4|\n|<ul><li>- [ ] Done</li></ul>|42|[Divisible by Seven](http://codeforces.com/problemset/problem/375/A)|Codeforces|4|\n|<ul><li>- [ ] Done</li></ul>|43|[Connecting Universities](http://codeforces.com/problemset/problem/700/B)|Codeforces|4|\n|<ul><li>- [ ] Done</li></ul>|44|[Zero-One](http://codeforces.com/problemset/problem/135/C)|Codeforces|4|\n|<ul><li>- [ ] Done</li></ul>|45|[Ant on the Tree](http://codeforces.com/problemset/problem/29/D)|Codeforces|4|\n|<ul><li>- [ ] Done</li></ul>|46|[Kay and Snowflake](http://codeforces.com/problemset/problem/685/B)|Codeforces|4|\n|<ul><li>- [ ] Done</li></ul>|47|[DNA Alignment](http://codeforces.com/problemset/problem/520/C)|Codeforces|4|\n|<ul><li>- [ ] Done</li></ul>|48|[Coloring Trees](http://codeforces.com/problemset/problem/711/C)|Codeforces|4|\n|<ul><li>- [ ] Done</li></ul>|49|[More Cowbell](http://codeforces.com/problemset/problem/604/B)|Codeforces|4|\n|<ul><li>- [ ] Done</li></ul>|50|[Malek Dance Club](http://codeforces.com/problemset/problem/319/A)|Codeforces|4|\n|<ul><li>- [ ] Done</li></ul>|51|[Berzerk](http://codeforces.com/problemset/problem/786/A)|Codeforces|4|\n|<ul><li>- [ ] Done</li></ul>|52|[Recycling Bottles](http://codeforces.com/problemset/problem/671/A)|Codeforces|4|\n|<ul><li>- [ ] Done</li></ul>|53|[Moodular Arithmetic](http://codeforces.com/problemset/problem/603/B)|Codeforces|4|\n|<ul><li>- [ ] Done</li></ul>|54|[Keyboard](http://codeforces.com/problemset/problem/88/B)|Codeforces|4|\n|<ul><li>- [ ] Done</li></ul>|55|[Sysadmin Bob](http://codeforces.com/problemset/problem/31/B)|Codeforces|4|\n|<ul><li>- [ ] Done</li></ul>|56|[The Child and Set](http://codeforces.com/problemset/problem/437/B)|Codeforces|4|\n|<ul><li>- [ ] Done</li></ul>|57|[Borya and Hanabi](http://codeforces.com/problemset/problem/442/A)|Codeforces|4|\n|<ul><li>- [ ] Done</li></ul>|58|[Ilya and Sticks](http://codeforces.com/problemset/problem/525/C)|Codeforces|4|\n|<ul><li>- [ ] Done</li></ul>|59|[Peter and Snow Blower](http://codeforces.com/problemset/problem/613/A)|Codeforces|4|\n|<ul><li>- [ ] Done</li></ul>|60|[Amr and Pins](http://codeforces.com/problemset/problem/507/B)|Codeforces|4|\n|<ul><li>- [ ] Done</li></ul>|61|[Modular Equations](http://codeforces.com/problemset/problem/495/B)|Codeforces|4|\n|<ul><li>- [ ] Done</li></ul>|62|[Timofey and rectangles](http://codeforces.com/problemset/problem/763/B)|Codeforces|4|\n|<ul><li>- [ ] Done</li></ul>|63|[Replacement](http://codeforces.com/problemset/problem/570/C)|Codeforces|4|\n|<ul><li>- [ ] Done</li></ul>|64|[Dreamoon and Sets](http://codeforces.com/problemset/problem/476/D)|Codeforces|4|\n|<ul><li>- [ ] Done</li></ul>|65|[Polyline](http://codeforces.com/problemset/problem/617/D)|Codeforces|4|\n|<ul><li>- [ ] Done</li></ul>|66|[Music](http://codeforces.com/problemset/problem/569/A)|Codeforces|4|\n|<ul><li>- [ ] Done</li></ul>|67|[Chips](http://codeforces.com/problemset/problem/333/B)|Codeforces|4|\n|<ul><li>- [ ] Done</li></ul>|68|[The Values You Can Make](http://codeforces.com/problemset/problem/687/C)|Codeforces|4|\n|<ul><li>- [ ] Done</li></ul>|69|[Inna and Sequence ](http://codeforces.com/problemset/problem/374/D)|Codeforces|4|\n|<ul><li>- [ ] Done</li></ul>|70|[School Marks](http://codeforces.com/problemset/problem/540/B)|Codeforces|4|\n|<ul><li>- [ ] Done</li></ul>|71|[Alternating Current](http://codeforces.com/problemset/problem/343/B)|Codeforces|4|\n|<ul><li>- [ ] Done</li></ul>|72|[Unordered Subsequence](http://codeforces.com/problemset/problem/27/C)|Codeforces|4|\n|<ul><li>- [ ] Done</li></ul>|73|[Hard problem](http://codeforces.com/problemset/problem/706/C)|Codeforces|4|\n|<ul><li>- [ ] Done</li></ul>|74|[Subsegments](http://codeforces.com/problemset/problem/69/E)|Codeforces|4|\n|<ul><li>- [ ] Done</li></ul>|75|[Mike and Fun](http://codeforces.com/problemset/problem/548/B)|Codeforces|4|\n|<ul><li>- [ ] Done</li></ul>|76|[DZY Loves Chemistry](http://codeforces.com/problemset/problem/445/B)|Codeforces|4|\n|<ul><li>- [ ] Done</li></ul>|77|[Lazy Student](http://codeforces.com/problemset/problem/605/B)|Codeforces|4|\n|<ul><li>- [ ] Done</li></ul>|78|[Approximating a Constant Range](http://codeforces.com/problemset/problem/602/B)|Codeforces|4|\n|<ul><li>- [ ] Done</li></ul>|79|[24 Game](http://codeforces.com/problemset/problem/468/A)|Codeforces|4|\n|<ul><li>- [ ] Done</li></ul>|80|[Gena's Code](http://codeforces.com/problemset/problem/614/B)|Codeforces|4|\n|<ul><li>- [ ] Done</li></ul>|81|[Complete the Word](http://codeforces.com/problemset/problem/716/B)|Codeforces|4|\n|<ul><li>- [ ] Done</li></ul>|82|[Memory and De-Evolution](http://codeforces.com/problemset/problem/712/C)|Codeforces|4|\n|<ul><li>- [ ] Done</li></ul>|83|[Sereja and Swaps](http://codeforces.com/problemset/problem/425/A)|Codeforces|4|\n|<ul><li>- [ ] Done</li></ul>|84|[Remainders Game](http://codeforces.com/problemset/problem/687/B)|Codeforces|4|\n|<ul><li>- [ ] Done</li></ul>|85|[The table](http://codeforces.com/problemset/problem/226/D)|Codeforces|5|\n|<ul><li>- [ ] Done</li></ul>|86|[Let's Play Osu!](http://codeforces.com/problemset/problem/235/B)|Codeforces|5|\n|<ul><li>- [ ] Done</li></ul>|87|[Legacy](http://codeforces.com/problemset/problem/786/B)|Codeforces|5|\n|<ul><li>- [ ] Done</li></ul>|88|[Games with Rectangle](http://codeforces.com/problemset/problem/128/C)|Codeforces|5|\n|<ul><li>- [ ] Done</li></ul>|89|[Lieges of Legendre](http://codeforces.com/problemset/problem/603/C)|Codeforces|5|\n|<ul><li>- [ ] Done</li></ul>|90|[Ring Road 2](http://codeforces.com/problemset/problem/27/D)|Codeforces|5|\n|<ul><li>- [ ] Done</li></ul>|91|[Number With The Given Amount Of Divisors](http://codeforces.com/problemset/problem/27/E)|Codeforces|5|\n|<ul><li>- [ ] Done</li></ul>|92|[Anton and Permutation](http://codeforces.com/problemset/problem/785/E)|Codeforces|5|\n|<ul><li>- [ ] Done</li></ul>|93|[Anton and School - 2](http://codeforces.com/problemset/problem/785/D)|Codeforces|5|\n|<ul><li>- [ ] Done</li></ul>|94|[Ants](http://codeforces.com/problemset/problem/317/B)|Codeforces|5|\n|<ul><li>- [ ] Done</li></ul>|95|[Maxim and Restaurant](http://codeforces.com/problemset/problem/261/B)|Codeforces|5|\n|<ul><li>- [ ] Done</li></ul>|96|[3-cycles](http://codeforces.com/problemset/problem/41/E)|Codeforces|5|\n|<ul><li>- [ ] Done</li></ul>|97|[Surrounded](http://codeforces.com/problemset/problem/190/B)|Codeforces|5|\n|<ul><li>- [ ] Done</li></ul>|98|[Dispute](http://codeforces.com/problemset/problem/242/D)|Codeforces|5|\n|<ul><li>- [ ] Done</li></ul>|99|[Nanami's Digital Board](http://codeforces.com/problemset/problem/433/D)|Codeforces|5|\n|<ul><li>- [ ] Done</li></ul>|100|[Searching Rectangles](http://codeforces.com/problemset/problem/713/B)|Codeforces|5|\n|<ul><li>- [ ] Done</li></ul>|101|[Compatible Numbers](http://codeforces.com/problemset/problem/165/E)|Codeforces|5|\n|<ul><li>- [ ] Done</li></ul>|102|[Anton and Ira](http://codeforces.com/problemset/problem/584/E)|Codeforces|5|\n|<ul><li>- [ ] Done</li></ul>|103|[Pluses everywhere](http://codeforces.com/problemset/problem/520/E)|Codeforces|5|\n|<ul><li>- [ ] Done</li></ul>|104|[Directed Roads](http://codeforces.com/problemset/problem/711/D)|Codeforces|5|\n|<ul><li>- [ ] Done</li></ul>|105|[Random Task](http://codeforces.com/problemset/problem/431/D)|Codeforces|5|\n|<ul><li>- [ ] Done</li></ul>|106|[Interesting Game](http://codeforces.com/problemset/problem/87/C)|Codeforces|5|\n|<ul><li>- [ ] Done</li></ul>|107|[Apple Tree](http://codeforces.com/problemset/problem/348/B)|Codeforces|5|\n|<ul><li>- [ ] Done</li></ul>|108|[Mike and Geometry Problem](http://codeforces.com/problemset/problem/689/E)|Codeforces|5|\n|<ul><li>- [ ] Done</li></ul>|109|[Maxim and Array](http://codeforces.com/problemset/problem/721/D)|Codeforces|5|\n|<ul><li>- [ ] Done</li></ul>|110|[Minimization](http://codeforces.com/problemset/problem/571/B)|Codeforces|5|\n|<ul><li>- [ ] Done</li></ul>|111|[World Eater Brothers](http://codeforces.com/problemset/problem/238/C)|Codeforces|5|\n|<ul><li>- [ ] Done</li></ul>|112|[Memory and Scores](http://codeforces.com/problemset/problem/712/D)|Codeforces|5|\n|<ul><li>- [ ] Done</li></ul>|113|[Vanya and Triangles](http://codeforces.com/problemset/problem/552/D)|Codeforces|5|\n|<ul><li>- [ ] Done</li></ul>|114|[Persistent Bookcase ](http://codeforces.com/problemset/problem/707/D)|Codeforces|5|\n|<ul><li>- [ ] Done</li></ul>|115|[Bamboo Partition](http://codeforces.com/problemset/problem/830/C)|Codeforces|5|\n|<ul><li>- [ ] Done</li></ul>|116|[Lucky Number Representation](http://codeforces.com/problemset/problem/354/E)|Codeforces|5|\n|<ul><li>- [ ] Done</li></ul>|117|[Dima and Magic Guitar](http://codeforces.com/problemset/problem/366/E)|Codeforces|5|\n|<ul><li>- [ ] Done</li></ul>|118|[Friends and Subsequences](http://codeforces.com/problemset/problem/689/D)|Codeforces|5|\n|<ul><li>- [ ] Done</li></ul>|119|[Journey](http://codeforces.com/problemset/problem/721/C)|Codeforces|5|\n|<ul><li>- [ ] Done</li></ul>|120|[Messenger](http://codeforces.com/problemset/problem/631/D)|Codeforces|5|\n|<ul><li>- [ ] Done</li></ul>|121|[Build String](http://codeforces.com/problemset/problem/237/E)|Codeforces|5|\n|<ul><li>- [ ] Done</li></ul>|122|[Complete The Graph](http://codeforces.com/problemset/problem/715/B)|Codeforces|5|\n|<ul><li>- [ ] Done</li></ul>|123|[Bear and Square Grid](http://codeforces.com/problemset/problem/679/C)|Codeforces|5|\n|<ul><li>- [ ] Done</li></ul>|124|[Weak Memory](http://codeforces.com/problemset/problem/187/C)|Codeforces|5|\n|<ul><li>- [ ] Done</li></ul>|125|[Sonya and Problem Wihtout a Legend](http://codeforces.com/problemset/problem/713/C)|Codeforces|5|\n|<ul><li>- [ ] Done</li></ul>|126|[Bear and Tower of Cubes](http://codeforces.com/problemset/problem/679/B)|Codeforces|5|\n|<ul><li>- [ ] Done</li></ul>|127|[Table Compression](http://codeforces.com/problemset/problem/650/C)|Codeforces|5|\n|<ul><li>- [ ] Done</li></ul>|128|[Mishka and Interesting sum](http://codeforces.com/problemset/problem/703/D)|Codeforces|5|\n|<ul><li>- [ ] Done</li></ul>|129|[Marbles](http://codeforces.com/problemset/problem/607/C)|Codeforces|6|\n|<ul><li>- [ ] Done</li></ul>|130|[Divisor Tree](http://codeforces.com/problemset/problem/337/E)|Codeforces|6|\n|<ul><li>- [ ] Done</li></ul>|131|[Quarrel](http://codeforces.com/problemset/problem/29/E)|Codeforces|6|\n|<ul><li>- [ ] Done</li></ul>|132|[Bear in the Field](http://codeforces.com/problemset/problem/385/E)|Codeforces|6|\n|<ul><li>- [ ] Done</li></ul>|133|[Edges in MST](http://codeforces.com/problemset/problem/160/D)|Codeforces|6|\n|<ul><li>- [ ] Done</li></ul>|134|[Anya and Cubes](http://codeforces.com/problemset/problem/525/E)|Codeforces|6|\n|<ul><li>- [ ] Done</li></ul>|135|[Trains and Statistic](http://codeforces.com/problemset/problem/675/E)|Codeforces|6|\n|<ul><li>- [ ] Done</li></ul>|136|[Bear and Drawing](http://codeforces.com/problemset/problem/573/C)|Codeforces|6|\n|<ul><li>- [ ] Done</li></ul>|137|[Binary Tree on Plane](http://codeforces.com/problemset/problem/277/E)|Codeforces|6|\n|<ul><li>- [ ] Done</li></ul>|138|[Change-free](http://codeforces.com/problemset/problem/767/E)|Codeforces|6|\n|<ul><li>- [ ] Done</li></ul>|139|[Game with Powers](http://codeforces.com/problemset/problem/317/D)|Codeforces|6|\n|<ul><li>- [ ] Done</li></ul>|140|[Sereja and Tree](http://codeforces.com/problemset/problem/380/B)|Codeforces|6|\n|<ul><li>- [ ] Done</li></ul>|141|[Break Up](http://codeforces.com/problemset/problem/700/C)|Codeforces|6|\n|<ul><li>- [ ] Done</li></ul>|142|[George and Cards](http://codeforces.com/problemset/problem/387/E)|Codeforces|6|\n|<ul><li>- [ ] Done</li></ul>|143|[Codeword](http://codeforces.com/problemset/problem/666/C)|Codeforces|6|\n|<ul><li>- [ ] Done</li></ul>|144|[Bear and Floodlight](http://codeforces.com/problemset/problem/385/D)|Codeforces|6|\n|<ul><li>- [ ] Done</li></ul>|145|[The Last Fight Between Human and AI](http://codeforces.com/problemset/problem/676/E)|Codeforces|6|\n|<ul><li>- [ ] Done</li></ul>|146|[Lovely Matrix](http://codeforces.com/problemset/problem/274/D)|Codeforces|6|\n|<ul><li>- [ ] Done</li></ul>|147|[Infinite Inversions](http://codeforces.com/problemset/problem/540/E)|Codeforces|6|\n|<ul><li>- [ ] Done</li></ul>|148|[Beautiful Road](http://codeforces.com/problemset/problem/87/D)|Codeforces|6|\n|<ul><li>- [ ] Done</li></ul>|149|[Acyclic Organic Compounds](http://codeforces.com/problemset/problem/601/D)|Codeforces|6|\n|<ul><li>- [ ] Done</li></ul>|150|[Thwarting Demonstrations](http://codeforces.com/problemset/problem/191/E)|Codeforces|6|\n|<ul><li>- [ ] Done</li></ul>|151|[Arthur and Brackets](http://codeforces.com/problemset/problem/508/E)|Codeforces|6|\n|<ul><li>- [ ] Done</li></ul>|152|[Coin Troubles](http://codeforces.com/problemset/problem/283/C)|Codeforces|6|\n|<ul><li>- [ ] Done</li></ul>|153|[Garlands](http://codeforces.com/problemset/problem/707/E)|Codeforces|6|\n|<ul><li>- [ ] Done</li></ul>|154|[Ant Man](http://codeforces.com/problemset/problem/704/B)|Codeforces|6|\n|<ul><li>- [ ] Done</li></ul>|155|[ZS and The Birthday Paradox](http://codeforces.com/problemset/problem/711/E)|Codeforces|6|\n|<ul><li>- [ ] Done</li></ul>|156|[Game on Tree](http://codeforces.com/problemset/problem/280/C)|Codeforces|6|\n|<ul><li>- [ ] Done</li></ul>|157|[Axis Walking](http://codeforces.com/problemset/problem/327/E)|Codeforces|7|\n|<ul><li>- [ ] Done</li></ul>|158|[Sereja and Cinema](http://codeforces.com/problemset/problem/380/D)|Codeforces|7|\n|<ul><li>- [ ] Done</li></ul>|159|[Numbers](http://codeforces.com/problemset/problem/83/D)|Codeforces|7|\n|<ul><li>- [ ] Done</li></ul>|160|[Memory and Casinos](http://codeforces.com/problemset/problem/712/E)|Codeforces|7|\n|<ul><li>- [ ] Done</li></ul>|161|[Color the Carpet](http://codeforces.com/problemset/problem/297/D)|Codeforces|7|\n|<ul><li>- [ ] Done</li></ul>|162|[Travelling Through the Snow Queen's Kingdom](http://codeforces.com/problemset/problem/685/E)|Codeforces|7|\n|<ul><li>- [ ] Done</li></ul>|163|[Ultimate Weirdness of an Array](http://codeforces.com/problemset/problem/671/C)|Codeforces|7|\n|<ul><li>- [ ] Done</li></ul>|164|[The Child and Polygon](http://codeforces.com/problemset/problem/437/E)|Codeforces|7|\n|<ul><li>- [ ] Done</li></ul>|165|[Iahub and Xors](http://codeforces.com/problemset/problem/341/D)|Codeforces|7|\n|<ul><li>- [ ] Done</li></ul>|166|[Petya and Pipes](http://codeforces.com/problemset/problem/362/E)|Codeforces|7|\n|<ul><li>- [ ] Done</li></ul>|167|[Dividing Kingdom II](http://codeforces.com/problemset/problem/687/D)|Codeforces|7|\n|<ul><li>- [ ] Done</li></ul>|168|[Animals and Puzzle](http://codeforces.com/problemset/problem/713/D)|Codeforces|7|\n|<ul><li>- [ ] Done</li></ul>|169|[Alphabet Permutations](http://codeforces.com/problemset/problem/610/E)|Codeforces|7|\n|<ul><li>- [ ] Done</li></ul>|170|[Levko and Strings](http://codeforces.com/problemset/problem/360/C)|Codeforces|7|\n|<ul><li>- [ ] Done</li></ul>|171|[Linear Kingdom Races](http://codeforces.com/problemset/problem/115/E)|Codeforces|7|\n|<ul><li>- [ ] Done</li></ul>|172|[Little Victor and Set](http://codeforces.com/problemset/problem/460/D)|Codeforces|7|\n|<ul><li>- [ ] Done</li></ul>|173|[Minimum Modular](http://codeforces.com/problemset/problem/303/C)|Codeforces|7|\n|<ul><li>- [ ] Done</li></ul>|174|[Summer Earnings](http://codeforces.com/problemset/problem/333/E)|Codeforces|7|\n|<ul><li>- [ ] Done</li></ul>|175|[Counter Attack](http://codeforces.com/problemset/problem/190/E)|Codeforces|7|\n|<ul><li>- [ ] Done</li></ul>|176|[Digit Tree](http://codeforces.com/problemset/problem/715/C)|Codeforces|7|\n|<ul><li>- [ ] Done</li></ul>|177|[Kay and Eternity](http://codeforces.com/problemset/problem/685/D)|Codeforces|7|\n|<ul><li>- [ ] Done</li></ul>|178|[President's Path](http://codeforces.com/problemset/problem/416/E)|Codeforces|7|\n|<ul><li>- [ ] Done</li></ul>|179|[String](http://codeforces.com/problemset/problem/123/D)|Codeforces|7|\n|<ul><li>- [ ] Done</li></ul>|180|[Arpa’s overnight party and Mehrdad’s silent entering](http://codeforces.com/problemset/problem/741/C)|Codeforces|7|\n|<ul><li>- [ ] Done</li></ul>|181|[Sereja and Sets](http://codeforces.com/problemset/problem/367/D)|Codeforces|7|\n|<ul><li>- [ ] Done</li></ul>|182|[Working routine](http://codeforces.com/problemset/problem/706/E)|Codeforces|7|\n|<ul><li>- [ ] Done</li></ul>|183|[Opening Portals](http://codeforces.com/problemset/problem/196/E)|Codeforces|7|\n|<ul><li>- [ ] Done</li></ul>|184|[Lucky Array](http://codeforces.com/problemset/problem/121/E)|Codeforces|7|\n|<ul><li>- [ ] Done</li></ul>|185|[Sereja and Sets](http://codeforces.com/problemset/problem/425/E)|Codeforces|7|\n|<ul><li>- [ ] Done</li></ul>|186|[Drazil and Morning Exercise](http://codeforces.com/problemset/problem/516/D)|Codeforces|8|\n|<ul><li>- [ ] Done</li></ul>|187|[Optimal Point](http://codeforces.com/problemset/problem/685/C)|Codeforces|8|\n|<ul><li>- [ ] Done</li></ul>|188|[Roads in Yusland](http://codeforces.com/problemset/problem/671/D)|Codeforces|8|\n|<ul><li>- [ ] Done</li></ul>|189|[Jeff and Removing Periods](http://codeforces.com/problemset/problem/351/D)|Codeforces|8|\n|<ul><li>- [ ] Done</li></ul>|190|[Parcels](http://codeforces.com/problemset/problem/480/D)|Codeforces|8|\n|<ul><li>- [ ] Done</li></ul>|191|[Mission Impassable](http://codeforces.com/problemset/problem/150/D)|Codeforces|8|\n|<ul><li>- [ ] Done</li></ul>|192|[Mishka and Divisors](http://codeforces.com/problemset/problem/703/E)|Codeforces|8|\n|<ul><li>- [ ] Done</li></ul>|193|[Random Function and Tree](http://codeforces.com/problemset/problem/482/D)|Codeforces|8|\n|<ul><li>- [ ] Done</li></ul>|194|[Choosing Subtree is Fun](http://codeforces.com/problemset/problem/372/D)|Codeforces|8|\n|<ul><li>- [ ] Done</li></ul>|195|[World of Darkraft - 2](http://codeforces.com/problemset/problem/464/D)|Codeforces|8|\n|<ul><li>- [ ] Done</li></ul>|196|[DZY Loves Games](http://codeforces.com/problemset/problem/446/D)|Codeforces|9|\n|<ul><li>- [ ] Done</li></ul>|197|[GCD Table](http://codeforces.com/problemset/problem/338/D)|Codeforces|9|\n|<ul><li>- [ ] Done</li></ul>|198|[Parking Lot](http://codeforces.com/problemset/problem/480/E)|Codeforces|9|\n|<ul><li>- [ ] Done</li></ul>|199|[Cookie Clicker](http://codeforces.com/problemset/problem/377/E)|Codeforces|9|\n|<ul><li>- [ ] Done</li></ul>|200|[Ladies' Shop](http://codeforces.com/problemset/problem/286/E)|Codeforces|9|\n"
  },
  {
    "path": "ladders/32. Codeforces Rating >= 2200 (Extra)/README.md",
    "content": "# Ladder Name: 32 - Codeforces Rating >= 2200 (Extra)\n## Description\n Extra problems for experienced users or users with Codeforces Rating >= 2200 (Extra).\n## Difficulty Level: 5\n\n| Checkbox | ID  | Problem Name | Online Judge | Difficulty |\n|---|:---:|:---:|---|---|\n|<ul><li>- [ ] Done</li></ul>|1|[Bus to Udayland](http://codeforces.com/problemset/problem/711/A)|Codeforces|1|\n|<ul><li>- [ ] Done</li></ul>|2|[LLPS](http://codeforces.com/problemset/problem/202/A)|Codeforces|1|\n|<ul><li>- [ ] Done</li></ul>|3|[Playing with Dice](http://codeforces.com/problemset/problem/378/A)|Codeforces|1|\n|<ul><li>- [ ] Done</li></ul>|4|[Taymyr is calling you](http://codeforces.com/problemset/problem/764/A)|Codeforces|1|\n|<ul><li>- [ ] Done</li></ul>|5|[Summer Camp](http://codeforces.com/problemset/problem/672/A)|Codeforces|1|\n|<ul><li>- [ ] Done</li></ul>|6|[Soldier and Bananas](http://codeforces.com/problemset/problem/546/A)|Codeforces|1|\n|<ul><li>- [ ] Done</li></ul>|7|[Wizards' Duel](http://codeforces.com/problemset/problem/591/A)|Codeforces|1|\n|<ul><li>- [ ] Done</li></ul>|8|[Opponents](http://codeforces.com/problemset/problem/688/A)|Codeforces|1|\n|<ul><li>- [ ] Done</li></ul>|9|[Free Ice Cream](http://codeforces.com/problemset/problem/686/A)|Codeforces|1|\n|<ul><li>- [ ] Done</li></ul>|10|[Drazil and Date](http://codeforces.com/problemset/problem/515/A)|Codeforces|2|\n|<ul><li>- [ ] Done</li></ul>|11|[Arpa’s hard exam and Mehrdad’s naive cheat](http://codeforces.com/problemset/problem/742/A)|Codeforces|2|\n|<ul><li>- [ ] Done</li></ul>|12|[Multiplication Table](http://codeforces.com/problemset/problem/577/A)|Codeforces|2|\n|<ul><li>- [ ] Done</li></ul>|13|[Kefa and First Steps](http://codeforces.com/problemset/problem/580/A)|Codeforces|2|\n|<ul><li>- [ ] Done</li></ul>|14|[Lecture](http://codeforces.com/problemset/problem/499/B)|Codeforces|2|\n|<ul><li>- [ ] Done</li></ul>|15|[Nicholas and Permutation](http://codeforces.com/problemset/problem/676/A)|Codeforces|2|\n|<ul><li>- [ ] Done</li></ul>|16|[Pasha and Stick](http://codeforces.com/problemset/problem/610/A)|Codeforces|2|\n|<ul><li>- [ ] Done</li></ul>|17|[Different is Good](http://codeforces.com/problemset/problem/672/B)|Codeforces|2|\n|<ul><li>- [ ] Done</li></ul>|18|[Uncowed Forces](http://codeforces.com/problemset/problem/604/A)|Codeforces|2|\n|<ul><li>- [ ] Done</li></ul>|19|[Case of the Zeros and Ones](http://codeforces.com/problemset/problem/556/A)|Codeforces|2|\n|<ul><li>- [ ] Done</li></ul>|20|[Saitama Destroys Hotel](http://codeforces.com/problemset/problem/608/A)|Codeforces|2|\n|<ul><li>- [ ] Done</li></ul>|21|[Tavas and Nafas](http://codeforces.com/problemset/problem/535/A)|Codeforces|2|\n|<ul><li>- [ ] Done</li></ul>|22|[Bear and Five Cards](http://codeforces.com/problemset/problem/680/A)|Codeforces|2|\n|<ul><li>- [ ] Done</li></ul>|23|[Bear and Finding Criminals](http://codeforces.com/problemset/problem/680/B)|Codeforces|2|\n|<ul><li>- [ ] Done</li></ul>|24|[Calculating Function](http://codeforces.com/problemset/problem/486/A)|Codeforces|2|\n|<ul><li>- [ ] Done</li></ul>|25|[Lovely Palindromes](http://codeforces.com/problemset/problem/688/B)|Codeforces|2|\n|<ul><li>- [ ] Done</li></ul>|26|[Joysticks](http://codeforces.com/problemset/problem/651/A)|Codeforces|2|\n|<ul><li>- [ ] Done</li></ul>|27|[Timofey and cubes](http://codeforces.com/problemset/problem/764/B)|Codeforces|2|\n|<ul><li>- [ ] Done</li></ul>|28|[Complicated GCD](http://codeforces.com/problemset/problem/664/A)|Codeforces|2|\n|<ul><li>- [ ] Done</li></ul>|29|[Two Bases](http://codeforces.com/problemset/problem/602/A)|Codeforces|3|\n|<ul><li>- [ ] Done</li></ul>|30|[Rebranding](http://codeforces.com/problemset/problem/591/B)|Codeforces|3|\n|<ul><li>- [ ] Done</li></ul>|31|[Semifinals](http://codeforces.com/problemset/problem/378/B)|Codeforces|3|\n|<ul><li>- [ ] Done</li></ul>|32|[Median Smoothing](http://codeforces.com/problemset/problem/590/A)|Codeforces|3|\n|<ul><li>- [ ] Done</li></ul>|33|[Digital Counter](http://codeforces.com/problemset/problem/495/A)|Codeforces|3|\n|<ul><li>- [ ] Done</li></ul>|34|[Tavas and SaDDas](http://codeforces.com/problemset/problem/535/B)|Codeforces|3|\n|<ul><li>- [ ] Done</li></ul>|35|[Little Robber Girl's Zoo](http://codeforces.com/problemset/problem/686/B)|Codeforces|3|\n|<ul><li>- [ ] Done</li></ul>|36|[Alternative Thinking](http://codeforces.com/problemset/problem/603/A)|Codeforces|3|\n|<ul><li>- [ ] Done</li></ul>|37|[Misha and Changing Handles](http://codeforces.com/problemset/problem/501/B)|Codeforces|3|\n|<ul><li>- [ ] Done</li></ul>|38|[Valuable Resources](http://codeforces.com/problemset/problem/485/B)|Codeforces|3|\n|<ul><li>- [ ] Done</li></ul>|39|[Beautiful Paintings](http://codeforces.com/problemset/problem/651/B)|Codeforces|3|\n|<ul><li>- [ ] Done</li></ul>|40|[World Tour](http://codeforces.com/problemset/problem/666/B)|Codeforces|4|\n|<ul><li>- [ ] Done</li></ul>|41|[Arpa’s obvious problem and Mehrdad’s terrible solution](http://codeforces.com/problemset/problem/742/B)|Codeforces|4|\n|<ul><li>- [ ] Done</li></ul>|42|[Berzerk](http://codeforces.com/problemset/problem/786/A)|Codeforces|4|\n|<ul><li>- [ ] Done</li></ul>|43|[Tennis Championship](http://codeforces.com/problemset/problem/735/C)|Codeforces|4|\n|<ul><li>- [ ] Done</li></ul>|44|[Watering Flowers](http://codeforces.com/problemset/problem/617/C)|Codeforces|4|\n|<ul><li>- [ ] Done</li></ul>|45|[Approximating a Constant Range](http://codeforces.com/problemset/problem/602/B)|Codeforces|4|\n|<ul><li>- [ ] Done</li></ul>|46|[OR in Matrix](http://codeforces.com/problemset/problem/486/B)|Codeforces|4|\n|<ul><li>- [ ] Done</li></ul>|47|[Game of Credit Cards](http://codeforces.com/problemset/problem/777/B)|Codeforces|4|\n|<ul><li>- [ ] Done</li></ul>|48|[Day at the Beach](http://codeforces.com/problemset/problem/599/C)|Codeforces|4|\n|<ul><li>- [ ] Done</li></ul>|49|[Report](http://codeforces.com/problemset/problem/631/C)|Codeforces|4|\n|<ul><li>- [ ] Done</li></ul>|50|[Guest From the Past](http://codeforces.com/problemset/problem/625/A)|Codeforces|4|\n|<ul><li>- [ ] Done</li></ul>|51|[Modular Equations](http://codeforces.com/problemset/problem/495/B)|Codeforces|4|\n|<ul><li>- [ ] Done</li></ul>|52|[Tavas and Karafs](http://codeforces.com/problemset/problem/535/C)|Codeforces|4|\n|<ul><li>- [ ] Done</li></ul>|53|[Hamming Distance Sum](http://codeforces.com/problemset/problem/608/B)|Codeforces|4|\n|<ul><li>- [ ] Done</li></ul>|54|[Misha and Permutations Summation](http://codeforces.com/problemset/problem/501/D)|Codeforces|4|\n|<ul><li>- [ ] Done</li></ul>|55|[Mike and Fun](http://codeforces.com/problemset/problem/548/B)|Codeforces|4|\n|<ul><li>- [ ] Done</li></ul>|56|[Harmony Analysis](http://codeforces.com/problemset/problem/610/C)|Codeforces|4|\n|<ul><li>- [ ] Done</li></ul>|57|[Vasya and Wrestling](http://codeforces.com/problemset/problem/493/B)|Codeforces|4|\n|<ul><li>- [ ] Done</li></ul>|58|[Alyona and a tree](http://codeforces.com/problemset/problem/739/B)|Codeforces|4|\n|<ul><li>- [ ] Done</li></ul>|59|[More Cowbell](http://codeforces.com/problemset/problem/604/B)|Codeforces|4|\n|<ul><li>- [ ] Done</li></ul>|60|[Logo Turtle](http://codeforces.com/problemset/problem/132/C)|Codeforces|4|\n|<ul><li>- [ ] Done</li></ul>|61|[Moodular Arithmetic](http://codeforces.com/problemset/problem/603/B)|Codeforces|4|\n|<ul><li>- [ ] Done</li></ul>|62|[Taxes](http://codeforces.com/problemset/problem/735/D)|Codeforces|4|\n|<ul><li>- [ ] Done</li></ul>|63|[Recycling Bottles](http://codeforces.com/problemset/problem/671/A)|Codeforces|4|\n|<ul><li>- [ ] Done</li></ul>|64|[Gena's Code](http://codeforces.com/problemset/problem/614/B)|Codeforces|4|\n|<ul><li>- [ ] Done</li></ul>|65|[Image Preview](http://codeforces.com/problemset/problem/650/B)|Codeforces|4|\n|<ul><li>- [ ] Done</li></ul>|66|[Symmetric and Transitive](http://codeforces.com/problemset/problem/568/B)|Codeforces|4|\n|<ul><li>- [ ] Done</li></ul>|67|[Lipshitz Sequence](http://codeforces.com/problemset/problem/601/B)|Codeforces|4|\n|<ul><li>- [ ] Done</li></ul>|68|[Chip 'n Dale Rescue Rangers](http://codeforces.com/problemset/problem/590/B)|Codeforces|4|\n|<ul><li>- [ ] Done</li></ul>|69|[Candy Boxes](http://codeforces.com/problemset/problem/488/B)|Codeforces|5|\n|<ul><li>- [ ] Done</li></ul>|70|[Legacy](http://codeforces.com/problemset/problem/786/B)|Codeforces|5|\n|<ul><li>- [ ] Done</li></ul>|71|[Bamboo Partition](http://codeforces.com/problemset/problem/830/C)|Codeforces|5|\n|<ul><li>- [ ] Done</li></ul>|72|[Running Track](http://codeforces.com/problemset/problem/615/C)|Codeforces|5|\n|<ul><li>- [ ] Done</li></ul>|73|[Kleofáš and the n-thlon](http://codeforces.com/problemset/problem/601/C)|Codeforces|5|\n|<ul><li>- [ ] Done</li></ul>|74|[Mushroom Gnomes - 2](http://codeforces.com/problemset/problem/138/C)|Codeforces|5|\n|<ul><li>- [ ] Done</li></ul>|75|[Hanoi Factory](http://codeforces.com/problemset/problem/777/E)|Codeforces|5|\n|<ul><li>- [ ] Done</li></ul>|76|[Last Chance](http://codeforces.com/problemset/problem/137/E)|Codeforces|5|\n|<ul><li>- [ ] Done</li></ul>|77|[Anton and Ira](http://codeforces.com/problemset/problem/584/E)|Codeforces|5|\n|<ul><li>- [ ] Done</li></ul>|78|[Build String](http://codeforces.com/problemset/problem/237/E)|Codeforces|5|\n|<ul><li>- [ ] Done</li></ul>|79|[Vladik and cards](http://codeforces.com/problemset/problem/743/E)|Codeforces|5|\n|<ul><li>- [ ] Done</li></ul>|80|[Decoding Genome](http://codeforces.com/problemset/problem/222/E)|Codeforces|5|\n|<ul><li>- [ ] Done</li></ul>|81|[Inna and Binary Logic](http://codeforces.com/problemset/problem/400/E)|Codeforces|5|\n|<ul><li>- [ ] Done</li></ul>|82|[Happy Tree Party](http://codeforces.com/problemset/problem/593/D)|Codeforces|5|\n|<ul><li>- [ ] Done</li></ul>|83|[Anton and Permutation](http://codeforces.com/problemset/problem/785/E)|Codeforces|5|\n|<ul><li>- [ ] Done</li></ul>|84|[Little Elephant and LCM](http://codeforces.com/problemset/problem/258/C)|Codeforces|5|\n|<ul><li>- [ ] Done</li></ul>|85|[Spongebob and Squares](http://codeforces.com/problemset/problem/599/D)|Codeforces|5|\n|<ul><li>- [ ] Done</li></ul>|86|[Money Transfers](http://codeforces.com/problemset/problem/675/C)|Codeforces|5|\n|<ul><li>- [ ] Done</li></ul>|87|[Strictly Positive Matrix](http://codeforces.com/problemset/problem/402/E)|Codeforces|5|\n|<ul><li>- [ ] Done</li></ul>|88|[Minimization](http://codeforces.com/problemset/problem/571/B)|Codeforces|5|\n|<ul><li>- [ ] Done</li></ul>|89|[Random Task](http://codeforces.com/problemset/problem/431/D)|Codeforces|5|\n|<ul><li>- [ ] Done</li></ul>|90|[Let's Play Osu!](http://codeforces.com/problemset/problem/235/B)|Codeforces|5|\n|<ul><li>- [ ] Done</li></ul>|91|[Palindromes](http://codeforces.com/problemset/problem/137/D)|Codeforces|5|\n|<ul><li>- [ ] Done</li></ul>|92|[Messenger](http://codeforces.com/problemset/problem/631/D)|Codeforces|5|\n|<ul><li>- [ ] Done</li></ul>|93|[Hongcow Buys a Deck of Cards](http://codeforces.com/problemset/problem/744/C)|Codeforces|5|\n|<ul><li>- [ ] Done</li></ul>|94|[Love Triangles](http://codeforces.com/problemset/problem/553/C)|Codeforces|5|\n|<ul><li>- [ ] Done</li></ul>|95|[Pluses everywhere](http://codeforces.com/problemset/problem/520/E)|Codeforces|5|\n|<ul><li>- [ ] Done</li></ul>|96|[Paths and Trees](http://codeforces.com/problemset/problem/545/E)|Codeforces|5|\n|<ul><li>- [ ] Done</li></ul>|97|[Lengthening Sticks](http://codeforces.com/problemset/problem/571/A)|Codeforces|5|\n|<ul><li>- [ ] Done</li></ul>|98|[Sonya and Problem Wihtout a Legend](http://codeforces.com/problemset/problem/713/C)|Codeforces|5|\n|<ul><li>- [ ] Done</li></ul>|99|[Till I Collapse](http://codeforces.com/problemset/problem/786/C)|Codeforces|5|\n|<ul><li>- [ ] Done</li></ul>|100|[Cipher](http://codeforces.com/problemset/problem/156/C)|Codeforces|5|\n|<ul><li>- [ ] Done</li></ul>|101|[Apple Tree](http://codeforces.com/problemset/problem/348/B)|Codeforces|5|\n|<ul><li>- [ ] Done</li></ul>|102|[Flawed Flow](http://codeforces.com/problemset/problem/269/C)|Codeforces|5|\n|<ul><li>- [ ] Done</li></ul>|103|[Complete The Graph](http://codeforces.com/problemset/problem/715/B)|Codeforces|5|\n|<ul><li>- [ ] Done</li></ul>|104|[Superior Periodic Subarrays](http://codeforces.com/problemset/problem/582/C)|Codeforces|5|\n|<ul><li>- [ ] Done</li></ul>|105|[Lieges of Legendre](http://codeforces.com/problemset/problem/603/C)|Codeforces|5|\n|<ul><li>- [ ] Done</li></ul>|106|[Bear and Square Grid](http://codeforces.com/problemset/problem/679/C)|Codeforces|5|\n|<ul><li>- [ ] Done</li></ul>|107|[Bear and Tower of Cubes](http://codeforces.com/problemset/problem/679/B)|Codeforces|5|\n|<ul><li>- [ ] Done</li></ul>|108|[Invariance of Tree](http://codeforces.com/problemset/problem/576/B)|Codeforces|5|\n|<ul><li>- [ ] Done</li></ul>|109|[Points on Plane](http://codeforces.com/problemset/problem/576/C)|Codeforces|5|\n|<ul><li>- [ ] Done</li></ul>|110|[ZS and The Birthday Paradox](http://codeforces.com/problemset/problem/711/E)|Codeforces|6|\n|<ul><li>- [ ] Done</li></ul>|111|[Bear in the Field](http://codeforces.com/problemset/problem/385/E)|Codeforces|6|\n|<ul><li>- [ ] Done</li></ul>|112|[Famil Door and Roads](http://codeforces.com/problemset/problem/629/E)|Codeforces|6|\n|<ul><li>- [ ] Done</li></ul>|113|[Break Up](http://codeforces.com/problemset/problem/700/C)|Codeforces|6|\n|<ul><li>- [ ] Done</li></ul>|114|[Devu and Flowers](http://codeforces.com/problemset/problem/451/E)|Codeforces|6|\n|<ul><li>- [ ] Done</li></ul>|115|[Alyona and towers](http://codeforces.com/problemset/problem/739/C)|Codeforces|6|\n|<ul><li>- [ ] Done</li></ul>|116|[Find a car](http://codeforces.com/problemset/problem/809/C)|Codeforces|6|\n|<ul><li>- [ ] Done</li></ul>|117|[Bear and Floodlight](http://codeforces.com/problemset/problem/385/D)|Codeforces|6|\n|<ul><li>- [ ] Done</li></ul>|118|[Ostap and Tree](http://codeforces.com/problemset/problem/735/E)|Codeforces|6|\n|<ul><li>- [ ] Done</li></ul>|119|[Strange Calculation and Cats](http://codeforces.com/problemset/problem/593/E)|Codeforces|6|\n|<ul><li>- [ ] Done</li></ul>|120|[Change-free](http://codeforces.com/problemset/problem/767/E)|Codeforces|6|\n|<ul><li>- [ ] Done</li></ul>|121|[Graph Cutting](http://codeforces.com/problemset/problem/405/E)|Codeforces|6|\n|<ul><li>- [ ] Done</li></ul>|122|[Vanya and Balloons](http://codeforces.com/problemset/problem/677/E)|Codeforces|6|\n|<ul><li>- [ ] Done</li></ul>|123|[Anya and Cubes](http://codeforces.com/problemset/problem/525/E)|Codeforces|6|\n|<ul><li>- [ ] Done</li></ul>|124|[Game on Tree](http://codeforces.com/problemset/problem/280/C)|Codeforces|6|\n|<ul><li>- [ ] Done</li></ul>|125|[Bear and Drawing](http://codeforces.com/problemset/problem/573/C)|Codeforces|6|\n|<ul><li>- [ ] Done</li></ul>|126|[The Last Fight Between Human and AI](http://codeforces.com/problemset/problem/676/E)|Codeforces|6|\n|<ul><li>- [ ] Done</li></ul>|127|[Trains and Statistic](http://codeforces.com/problemset/problem/675/E)|Codeforces|6|\n|<ul><li>- [ ] Done</li></ul>|128|[Inversions After Shuffle](http://codeforces.com/problemset/problem/749/E)|Codeforces|6|\n|<ul><li>- [ ] Done</li></ul>|129|[Marbles](http://codeforces.com/problemset/problem/607/C)|Codeforces|6|\n|<ul><li>- [ ] Done</li></ul>|130|[Acyclic Organic Compounds](http://codeforces.com/problemset/problem/601/D)|Codeforces|6|\n|<ul><li>- [ ] Done</li></ul>|131|[Peterson Polyglot](http://codeforces.com/problemset/problem/778/C)|Codeforces|6|\n|<ul><li>- [ ] Done</li></ul>|132|[Power Tree](http://codeforces.com/problemset/problem/607/D)|Codeforces|6|\n|<ul><li>- [ ] Done</li></ul>|133|[Codeword](http://codeforces.com/problemset/problem/666/C)|Codeforces|6|\n|<ul><li>- [ ] Done</li></ul>|134|[Wilbur and Strings](http://codeforces.com/problemset/problem/596/E)|Codeforces|7|\n|<ul><li>- [ ] Done</li></ul>|135|[Iahub and Xors](http://codeforces.com/problemset/problem/341/D)|Codeforces|7|\n|<ul><li>- [ ] Done</li></ul>|136|[Sandy and Nuts](http://codeforces.com/problemset/problem/599/E)|Codeforces|7|\n|<ul><li>- [ ] Done</li></ul>|137|[Dima and Figure](http://codeforces.com/problemset/problem/273/D)|Codeforces|7|\n|<ul><li>- [ ] Done</li></ul>|138|[Maximum Waterfall](http://codeforces.com/problemset/problem/269/D)|Codeforces|7|\n|<ul><li>- [ ] Done</li></ul>|139|[String](http://codeforces.com/problemset/problem/123/D)|Codeforces|7|\n|<ul><li>- [ ] Done</li></ul>|140|[Animals and Puzzle](http://codeforces.com/problemset/problem/713/D)|Codeforces|7|\n|<ul><li>- [ ] Done</li></ul>|141|[Splitting the Uniqueness](http://codeforces.com/problemset/problem/297/C)|Codeforces|7|\n|<ul><li>- [ ] Done</li></ul>|142|[Levko and Strings](http://codeforces.com/problemset/problem/360/C)|Codeforces|7|\n|<ul><li>- [ ] Done</li></ul>|143|[Max and Bike](http://codeforces.com/problemset/problem/594/B)|Codeforces|7|\n|<ul><li>- [ ] Done</li></ul>|144|[Yaroslav and Points](http://codeforces.com/problemset/problem/295/E)|Codeforces|7|\n|<ul><li>- [ ] Done</li></ul>|145|[Anniversary](http://codeforces.com/problemset/problem/226/C)|Codeforces|7|\n|<ul><li>- [ ] Done</li></ul>|146|[Ultimate Weirdness of an Array](http://codeforces.com/problemset/problem/671/C)|Codeforces|7|\n|<ul><li>- [ ] Done</li></ul>|147|[Sereja and Sets](http://codeforces.com/problemset/problem/425/E)|Codeforces|7|\n|<ul><li>- [ ] Done</li></ul>|148|[Permutations](http://codeforces.com/problemset/problem/736/D)|Codeforces|7|\n|<ul><li>- [ ] Done</li></ul>|149|[Curious Array](http://codeforces.com/problemset/problem/407/C)|Codeforces|7|\n|<ul><li>- [ ] Done</li></ul>|150|[Little Elephant and Tree](http://codeforces.com/problemset/problem/258/E)|Codeforces|7|\n|<ul><li>- [ ] Done</li></ul>|151|[Parquet Re-laying](http://codeforces.com/problemset/problem/778/D)|Codeforces|7|\n|<ul><li>- [ ] Done</li></ul>|152|[Timofey and remoduling](http://codeforces.com/problemset/problem/763/C)|Codeforces|7|\n|<ul><li>- [ ] Done</li></ul>|153|[Misha and Palindrome Degree](http://codeforces.com/problemset/problem/501/E)|Codeforces|7|\n|<ul><li>- [ ] Done</li></ul>|154|[Kefa and Watch](http://codeforces.com/problemset/problem/580/E)|Codeforces|7|\n|<ul><li>- [ ] Done</li></ul>|155|[Arpa’s overnight party and Mehrdad’s silent entering](http://codeforces.com/problemset/problem/741/C)|Codeforces|7|\n|<ul><li>- [ ] Done</li></ul>|156|[Timofey and our friends animals](http://codeforces.com/problemset/problem/763/E)|Codeforces|7|\n|<ul><li>- [ ] Done</li></ul>|157|[Digit Tree](http://codeforces.com/problemset/problem/715/C)|Codeforces|7|\n|<ul><li>- [ ] Done</li></ul>|158|[Product Sum](http://codeforces.com/problemset/problem/631/E)|Codeforces|7|\n|<ul><li>- [ ] Done</li></ul>|159|[Choosing Subtree is Fun](http://codeforces.com/problemset/problem/372/D)|Codeforces|8|\n|<ul><li>- [ ] Done</li></ul>|160|[Cyclical Quest](http://codeforces.com/problemset/problem/235/C)|Codeforces|8|\n|<ul><li>- [ ] Done</li></ul>|161|[Sereja and Intervals](http://codeforces.com/problemset/problem/367/E)|Codeforces|8|\n|<ul><li>- [ ] Done</li></ul>|162|[Hamming Triples](http://codeforces.com/problemset/problem/406/E)|Codeforces|8|\n|<ul><li>- [ ] Done</li></ul>|163|[Fox And Polygon](http://codeforces.com/problemset/problem/512/E)|Codeforces|8|\n|<ul><li>- [ ] Done</li></ul>|164|[Black Widow](http://codeforces.com/problemset/problem/704/C)|Codeforces|8|\n|<ul><li>- [ ] Done</li></ul>|165|[Maxim and Increasing Subsequence](http://codeforces.com/problemset/problem/261/D)|Codeforces|8|\n|<ul><li>- [ ] Done</li></ul>|166|[Vasya and Polynomial](http://codeforces.com/problemset/problem/493/E)|Codeforces|8|\n|<ul><li>- [ ] Done</li></ul>|167|[Gosha is hunting](http://codeforces.com/problemset/problem/739/E)|Codeforces|8|\n|<ul><li>- [ ] Done</li></ul>|168|[Bear and Chase](http://codeforces.com/problemset/problem/679/D)|Codeforces|8|\n|<ul><li>- [ ] Done</li></ul>|169|[Fetch the Treasure](http://codeforces.com/problemset/problem/311/C)|Codeforces|8|\n|<ul><li>- [ ] Done</li></ul>|170|[Jeff and Removing Periods](http://codeforces.com/problemset/problem/351/D)|Codeforces|8|\n|<ul><li>- [ ] Done</li></ul>|171|[Random Function and Tree](http://codeforces.com/problemset/problem/482/D)|Codeforces|8|\n|<ul><li>- [ ] Done</li></ul>|172|[Timofey and a flat tree](http://codeforces.com/problemset/problem/763/D)|Codeforces|8|\n|<ul><li>- [ ] Done</li></ul>|173|[World of Darkraft - 2](http://codeforces.com/problemset/problem/464/D)|Codeforces|8|\n|<ul><li>- [ ] Done</li></ul>|174|[Drazil and Morning Exercise](http://codeforces.com/problemset/problem/516/D)|Codeforces|8|\n|<ul><li>- [ ] Done</li></ul>|175|[Boolean Function](http://codeforces.com/problemset/problem/582/E)|Codeforces|8|\n|<ul><li>- [ ] Done</li></ul>|176|[Misha and XOR](http://codeforces.com/problemset/problem/504/D)|Codeforces|8|\n|<ul><li>- [ ] Done</li></ul>|177|[Randomizer](http://codeforces.com/problemset/problem/559/D)|Codeforces|8|\n|<ul><li>- [ ] Done</li></ul>|178|[Roads in Yusland](http://codeforces.com/problemset/problem/671/D)|Codeforces|8|\n|<ul><li>- [ ] Done</li></ul>|179|[Arpa’s letter-marked tree and Mehrdad’s Dokhtar-kosh paths](http://codeforces.com/problemset/problem/741/D)|Codeforces|8|\n|<ul><li>- [ ] Done</li></ul>|180|[New Language](http://codeforces.com/problemset/problem/568/C)|Codeforces|8|\n|<ul><li>- [ ] Done</li></ul>|181|[Flights for Regular Customers](http://codeforces.com/problemset/problem/576/D)|Codeforces|8|\n|<ul><li>- [ ] Done</li></ul>|182|[Cow Tennis Tournament](http://codeforces.com/problemset/problem/283/E)|Codeforces|9|\n|<ul><li>- [ ] Done</li></ul>|183|[Fence](http://codeforces.com/problemset/problem/232/D)|Codeforces|9|\n|<ul><li>- [ ] Done</li></ul>|184|[Maxim and Calculator](http://codeforces.com/problemset/problem/261/E)|Codeforces|9|\n|<ul><li>- [ ] Done</li></ul>|185|[Bear and Bowling](http://codeforces.com/problemset/problem/573/E)|Codeforces|9|\n|<ul><li>- [ ] Done</li></ul>|186|[Bear and Cavalry](http://codeforces.com/problemset/problem/573/D)|Codeforces|9|\n|<ul><li>- [ ] Done</li></ul>|187|[Pastoral Oddities](http://codeforces.com/problemset/problem/603/E)|Codeforces|9|\n|<ul><li>- [ ] Done</li></ul>|188|[k-Maximum Subsequence Sum](http://codeforces.com/problemset/problem/280/D)|Codeforces|9|\n|<ul><li>- [ ] Done</li></ul>|189|[Little Pony and Elements of Harmony](http://codeforces.com/problemset/problem/453/D)|Codeforces|9|\n|<ul><li>- [ ] Done</li></ul>|190|[Parking Lot](http://codeforces.com/problemset/problem/480/E)|Codeforces|9|\n|<ul><li>- [ ] Done</li></ul>|191|[Quick Tortoise](http://codeforces.com/problemset/problem/232/E)|Codeforces|9|\n|<ul><li>- [ ] Done</li></ul>|192|[Little Pony and Lord Tirek](http://codeforces.com/problemset/problem/453/E)|Codeforces|9|\n|<ul><li>- [ ] Done</li></ul>|193|[Ladies' Shop](http://codeforces.com/problemset/problem/286/E)|Codeforces|9|\n|<ul><li>- [ ] Done</li></ul>|194|[Clockwork Bomb](http://codeforces.com/problemset/problem/650/E)|Codeforces|9|\n|<ul><li>- [ ] Done</li></ul>|195|[Campus](http://codeforces.com/problemset/problem/571/D)|Codeforces|9|\n|<ul><li>- [ ] Done</li></ul>|196|[Points and Segments](http://codeforces.com/problemset/problem/429/E)|Codeforces|9|\n|<ul><li>- [ ] Done</li></ul>|197|[Mirror Room](http://codeforces.com/problemset/problem/274/E)|Codeforces|10|\n|<ul><li>- [ ] Done</li></ul>|198|[Listening to Music](http://codeforces.com/problemset/problem/543/E)|Codeforces|10|\n|<ul><li>- [ ] Done</li></ul>|199|[Pumping Stations](http://codeforces.com/problemset/problem/343/E)|Codeforces|10|\n|<ul><li>- [ ] Done</li></ul>|200|[k-d-sequence](http://codeforces.com/problemset/problem/407/E)|Codeforces|10|\n"
  },
  {
    "path": "ladders.py",
    "content": "from bs4 import BeautifulSoup\nimport requests\nimport urllib\nimport os\nimport re\n\nwrite_to_file = False\n\n\ndef get_ladder(dir_name, url):\n    url = \"https://www.a2oj.com/{}\".format(url)\n\n    data = requests.get(url).text\n    soup = BeautifulSoup(data, features=\"lxml\")\n    tables = soup.findAll(\"table\")\n\n    header = tables[0].find_all(\"tr\")\n    ladder_name = header[0].find_all(\"td\")[0].get_text().rstrip()\n    description = header[1].find_all(\"td\")[0].get_text().rstrip().split(\":\")[1]\n    difficulty = header[2].find_all(\"td\")[0].get_text().rstrip()\n    final_data = \"\"\n\n    final_data += \"# {}\".format(ladder_name)\n    final_data += \"\\n\"\n    final_data += \"## {}\\n\".format(\"Description\")\n    final_data += description\n    final_data += \"\\n\"\n    final_data += \"## {}\".format(difficulty)\n    final_data += \"\\n\"\n    final_data += \"\\n\"\n\n    problems = tables[1]\n    prob_headings = [th.get_text()\n                     for th in problems.find(\"tr\").find_all(\"th\")]\n    heading_text = \"| Checkbox | ID  | Problem Name | Online Judge | Difficulty |\\n\"\n\n    final_data += heading_text\n    final_data += \"|---|:---:|:---:|---|---|\\n\"\n\n    datasets = []\n    for row in problems.find_all(\"tr\")[1:]:\n        tds = row.find_all(\"td\")\n        # print(tds)\n        id = tds[0].get_text()\n        name = tds[1].get_text()\n        link = tds[1].find(\"a\").get('href')\n        platform = tds[2].get_text()\n        difficulty = tds[3].get_text()\n        dataset = [id, name, link, platform, difficulty]\n        final_data += \"|<ul><li>- [ ] Done</li></ul>|{}|[{}]({})|{}|{}|\\n\".format(id,\n                                                                                  name, link, platform, difficulty)\n        datasets.append(dataset)\n\n    # print(datasets)\n    # print(final_data)\n    os.makedirs(\"ladders/\" + dir_name)\n    file = open(os.path.join(\"ladders\", dir_name, \"README.md\"), 'w')\n    file.write(final_data)\n    file.close()\n\n\nurl = \"https://www.a2oj.com/Ladders.html\"\n\ndata = requests.get(url).text\nsoup = BeautifulSoup(data, features=\"lxml\")\ntables = soup.findAll(\"table\")\n\nheadings = [th.get_text() for th in tables[0].find(\"tr\").find_all(\"th\")]\n# print(headings)\n\nfinal_data = \"# A2OJ-Ladder\\n\\n\"\n# print(header)\nheading_text = \"| Checkbox | ID  | Name | Problems Count |\\n\"\n\nfinal_data += heading_text\nfinal_data += \"|---|:---:|:---:|---|\\n\"\n\nfor table_no in range(2):\n    for row in tables[table_no].find_all(\"tr\")[1:]:\n        tds = row.find_all(\"td\")\n        # print(tds)\n        id = tds[0].get_text()\n        name = tds[1].get_text()\n        link = tds[1].find('a').get('href')\n        problems_count = tds[2].get_text()\n        dir_name = re.sub('[\\,\\\\\\/\\&\\?\\(\\)]', ' ', name).rstrip()\n        dir_name = \"{}. {}\".format(id.zfill(2), name)\n        final_data += \"|<ul><li>- [ ] Done</li></ul>|{}|[{}]({}/README.md)|{}|\\n\".format(\n            id, name, \"ladders/\" + urllib.parse.quote(dir_name), problems_count)\n        print(dir_name, link)\n        # get_ladder(dir_name, link)\n# print(datasets)\n# print(final_data)\n\nif write_to_file:\n    file = open('README.md', 'w')\n    file.write(final_data)\n    file.close()\n"
  },
  {
    "path": "main.py",
    "content": "from bs4 import BeautifulSoup\nimport requests\n\nurl = \"https://www.a2oj.com/Ladder11.html\"\n\ndata = requests.get(url).text\nsoup = BeautifulSoup(data, features=\"lxml\")\n\ntables = soup.findAll(\"table\")\n\nheader = tables[0]\n\nfor data in header.find_all(\"tr\"):\n    print(data.find_all(\"td\")[0].get_text())\n\nproblems = tables[1]\nheadings = [th.get_text() for th in problems.find(\"tr\").find_all(\"th\")]\nprint(headings)\n\ndatasets = []\nfor row in problems.find_all(\"tr\")[1:]:\n    tds = row.find_all(\"td\")\n    # print(tds)\n    id = tds[0].get_text()\n    prob = tds[1].find(\"a\").get('href')\n    platform = tds[2].get_text()\n    difficulty = tds[3].get_text()\n    dataset = [id, prob, platform, difficulty]\n    print(dataset)\n    datasets.append(dataset)\n\n# print(datasets)\n"
  }
]