1 |
P1 - Multi-judge Solving |
Codeforces |
Educational Codeforces Round 25 |

2 |
P2 - Rumor |
Codeforces |
Educational Codeforces Round 33 (Rated for Div. 2) |

3 |
P3 - Pizza Separation |
Codeforces |
Codeforces Round #448 (Div. 2) |

4 |
P4 - Alyona and the Tree |
Codeforces |
Codeforces Round #358 (Div. 2) |

5 |
P5 - Ice Cave |
Codeforces |
Codeforces Round #301 (Div. 2) |

6 |
P6 - News About Credit |
Codeforces |
VK Cup 2017 - Qualification 1 |

7 |
P7 - Robbers' watch |
Codeforces |
Codeforces Round #359 (Div. 1) & Codeforces Round #359 (Div. 2) |

8 |
P8 - Dasha and Password |
Codeforces |
Codeforces Round #394 (Div. 2) |

9 |
P9 - Petya and Catacombs |
Codeforces |
?????????? 2018 - ?????????? ????? 3 |

10 |
P10 - Voltage Keepsake |
Codeforces |
VK Cup 2017 - Round 2 |

11 |
P11 - Modulo Sum |
Codeforces |
Codeforces Round #319 (Div. 2) |

12 |
P12 - Hongcow Solves A Puzzle |
Codeforces |
Codeforces Round #385 (Div. 2) |

13 |
P13 - Tea Party |
Codeforces |
Educational Codeforces Round 21 |

14 |
P14 - Two TVs |
Codeforces |
Educational Codeforces Round 27 |

15 |
P15 - Luba And The Ticket |
Codeforces |
Educational Codeforces Round 27 |

16 |
P16 - T-Shirt Hunt |
Codeforces |
Codeforces Round #412 (rated, Div. 2, base on VK Cup 2017 Round 3) |

17 |
P17 - Cleaner Robot |
Codeforces |
2015-2016 ACM-ICPC, NEERC, Southern Subregional Contest (Online Mirror, ACM-ICPC Rules, Teams Preferred) |

18 |
P18 - Home Numbers |
Codeforces |
VK Cup 2016 - Qualification Round 2 |

19 |
P19 - From Y to Y |
Codeforces |
Codeforces Round #431 (Div. 1) & Codeforces Round #431 (Div. 2) |

20 |
P20 - Cellular Network |
Codeforces |
Educational Codeforces Round 15 |

21 |
P21 - Okabe and Boxes |
Codeforces |
Codeforces Round #420 (Div. 2) |

22 |
P22 - Constellation |
Codeforces |
Wunder Fund Round 2016 (Div. 1 + Div. 2 combined) |

23 |
P23 - Seating On Bus |
Codeforces |
Educational Codeforces Round 11 |

24 |
P24 - Tram |
Codeforces |
Codeforces Round #386 (Div. 2) |

25 |
P25 - Problems for Round |
Codeforces |
Codeforces Round #351 (VK Cup 2016 Round 3, Div. 2 Edition) |

26 |
P26 - Journey |
Codeforces |
Codeforces Round #374 (Div. 2) |

27 |
P27 - Slava and tanks |
Codeforces |
Codeforces Round #442 (Div. 2) |

28 |
P28 - Year of University Entrance |
Codeforces |
VK Cup 2017 - Qualification 1 |

29 |
P29 - Cutting Carrot |
Codeforces |
Tinkoff Challenge - Final Round (Codeforces Round #414, rated, Div. 1 + Div. 2) |

30 |
P30 - k-Factorization |
Codeforces |
Educational Codeforces Round 19 |