1 |
P1 - Vanya and Triangles |
Codeforces |
Codeforces Round #308 (Div. 2) |

2 |
P2 - Multipliers |
Codeforces |
Codeforces Round #338 (Div. 2) |

3 |
P3 - Trees in a Row |
Codeforces |
Codeforces Round #236 (Div. 2) |

4 |
P4 - Help Farmer |
Codeforces |
Codeforces Round #102 (Div. 1) & Codeforces Round #102 (Div. 2) |

5 |
P5 - Orchestra |
Codeforces |
8VC Venture Cup 2016 - Final Round (Div. 2 Edition) & 8VC Venture Cup 2016 - Final Round (Div. 1 Edition) |

6 |
P6 - Wilbur and Points |
Codeforces |
Codeforces Round #331 (Div. 2) |

7 |
P7 - Subtractions |
Codeforces |
Codeforces Testing Round #5 |

8 |
P8 - Poster |
Codeforces |
Coder-Strike 2014 - Round 1 |

9 |
P9 - Dense Subsequence |
Codeforces |
Intel Code Challenge Final Round (Div. 1 + Div. 2, Combined) |

10 |
P10 - Robot Rapping Results Report |
Codeforces |
CROC 2016 - Elimination Round |

11 |
P11 - Iahub and Permutations |
Codeforces |
Codeforces Round #198 (Div. 2) & Codeforces Round #198 (Div. 1) |

12 |
P12 - Tablecity |
Codeforces |
Bubble Cup 8 - Finals [Online Mirror] |

13 |
P13 - Problem About Equation |
Codeforces |
VK Cup 2012 Round 3 (Unofficial Div. 2 Edition) |

14 |
P14 - Bear and Tower of Cubes |
Codeforces |
Codeforces Round #356 (Div. 1) & Codeforces Round #356 (Div. 2) |

15 |
P15 - Embassy Queue |
Codeforces |
Yandex.Algorithm 2011 Round 1 |

16 |
P16 - Let's Play Osu! |
Codeforces |
Codeforces Round #146 (Div. 1) & Codeforces Round #146 (Div. 2) |

17 |
P17 - DNA Evolution |
Codeforces |
Codeforces Round #423 (Div. 1, rated, based on VK Cup Finals) & Codeforces Round #423 (Div. 2, rated, based on VK Cup Finals) |

18 |
P18 - Naughty Stone Piles |
Codeforces |
Codeforces Round #140 (Div. 1) & Codeforces Round #140 (Div. 2) |

19 |
P19 - Mittens |
Codeforces |
Codeforces Round #217 (Div. 2) |

20 |
P20 - GukiZ and Binary Operations |
Codeforces |
Codeforces Round #307 (Div. 2) |

21 |
P21 - Table |
Codeforces |
Codeforces Round #144 (Div. 1) & Codeforces Round #144 (Div. 2) |

22 |
P22 - Harry Potter and the History of Magic |
Codeforces |
Codeforces Beta Round #60 |

23 |
P23 - Lieges of Legendre |
Codeforces |
Codeforces Round #334 (Div. 1) & Codeforces Round #334 (Div. 2) |

24 |
P24 - Two Strings |
Codeforces |
Codeforces Round #138 (Div. 1) & Codeforces Round #138 (Div. 2) |

25 |
P25 - Send the Fool Further! (easy) |
Codeforces |
Helvetic Coding Contest 2017 online mirror (teams allowed, unrated) |

26 |
P26 - Match & Catch |
Codeforces |
Codeforces Round #244 (Div. 2) |