1 |
P1 - Vanya and Fence |
Codeforces |
Codeforces Round #355 (Div. 2) |

2 |
P2 - Anton and Danik |
Codeforces |
Codeforces Round #379 (Div. 2) |

3 |
P3 - Bear and Big Brother |
Codeforces |
Codeforces Round #405 (rated, Div. 2, based on VK Cup 2017 Round 1) |

4 |
P4 - Beautiful Matrix |
Codeforces |
Codeforces Round #161 (Div. 2) |

5 |
P5 - Gravity Flip |
Codeforces |
Codeforces Round #238 (Div. 2) |

6 |
P6 - Petya and Strings |
Codeforces |
Codeforces Beta Round #85 (Div. 2 Only) |

7 |
P7 - Boy or Girl |
Codeforces |
Codeforces Round #146 (Div. 2) |

8 |
P8 - Word Capitalization |
Codeforces |
Codeforces Round #172 (Div. 2) |

9 |
P9 - Magnets |
Codeforces |
Codeforces Round #200 (Div. 2) |

10 |
P10 - Sereja and Dima |
Codeforces |
Codeforces Round #223 (Div. 2) |

11 |
P11 - Stones on the Table |
Codeforces |
Codeforces Round #163 (Div. 2) |

12 |
P12 - Stones on the Table |
Codeforces |
Codeforces Round #163 (Div. 2) |

13 |
P13 - Police Recruits |
Codeforces |
Codeforces Round #244 (Div. 2) |

14 |
P14 - Black Square |
Codeforces |
Codeforces Round #247 (Div. 2) |

15 |
P15 - Night at the Museum |
Codeforces |
Codeforces Round #376 (Div. 2) |

16 |
P16 - Games |
Codeforces |
Codeforces Round #164 (Div. 2) |

17 |
P17 - Buy a Shovel |
Codeforces |
Codeforces Round #377 (Div. 2) |

18 |
P18 - Is your horseshoe on the other hoof? |
Codeforces |
Codeforces Round #141 (Div. 2) |

19 |
P19 - Colorful Stones (Simplified Edition) |
Codeforces |
Codeforces Round #162 (Div. 2) |

20 |
P20 - Die Roll |
Codeforces |
Codeforces Beta Round #9 (Div. 2 Only) |