1 |
P1 - Fox Dividing Cheese |
Codeforces |
Codeforces Round #218 (Div. 2) |

2 |
P2 - Canvas Frames |
Codeforces |
Codeforces Beta Round #93 (Div. 2 Only) |

3 |
P3 - Exams |
Codeforces |
Codeforces Round #122 (Div. 2) |

4 |
P4 - Little Pony and Crystal Mine |
Codeforces |
Codeforces Round #259 (Div. 2) |

5 |
P5 - Painting Eggs |
Codeforces |
Codeforces Round #173 (Div. 2) |

6 |
P6 - Lucky Division |
Codeforces |
Codeforces Beta Round #91 (Div. 2 Only) |

7 |
P7 - Transformation: from A to B |
Codeforces |
Technocup 2017 - Elimination Round 1 (Unofficially Open for Everyone, Rated for Div. 2) |

8 |
P8 - Stones on the Table |
Codeforces |
Codeforces Round #163 (Div. 2) |

9 |
P9 - Burglar and Matches |
Codeforces |
Codeforces Beta Round #16 (Div. 2 Only) |

10 |
P10 - The Best Gift |
Codeforces |
Educational Codeforces Round 3 |

11 |
P11 - Fake NP |
Codeforces |
Codeforces Round #411 (Div. 2) |

12 |
P12 - Good Sequences |
Codeforces |
Codeforces Round #162 (Div. 1) & Codeforces Round #162 (Div. 2) |

13 |
P13 - Little Elephant and Chess |
Codeforces |
Codeforces Round #157 (Div. 2) |

14 |
P14 - Xenia and Divisors |
Codeforces |
Codeforces Round #199 (Div. 2) |

15 |
P15 - Strongly Connected City |
Codeforces |
Bayan 2015 Contest Warm Up |

16 |
P16 - Permutation Cycle |
Codeforces |
ICM Technex 2018 and Codeforces Round #463 (Div. 1 + Div. 2, combined) |

17 |
P17 - Theatre Square |
Codeforces |
Codeforces Beta Round #1 |

18 |
P18 - Minimum number of steps |
Codeforces |
Codeforces Round #411 (Div. 1) & Codeforces Round #411 (Div. 2) |

19 |
P19 - GCD Table |
Codeforces |
Codeforces Round #323 (Div. 1) & Codeforces Round #323 (Div. 2) |

20 |
P20 - Minesweeper |
Codeforces |
Codeforces Round #483 (Div. 2) [Thanks, Botan Investments and Victor Shaburov!] |

21 |
P21 - Lucky String |
Codeforces |
Codeforces Beta Round #84 (Div. 2 Only) |

22 |
P22 - Search for Pretty Integers |
Codeforces |
Technocup 2018 - Elimination Round 2 |

23 |
P23 - An abandoned sentiment from past |
Codeforces |
Codeforces Round #418 (Div. 2) |

24 |
P24 - Berland Fair |
Codeforces |
Educational Codeforces Round 53 (Rated for Div. 2) |

25 |
P25 - Fair |
Codeforces |
Codeforces Round #485 (Div. 1) & Codeforces Round #485 (Div. 2) |

26 |
P26 - Again Twenty Five! |
Codeforces |
Experimental Educational Round: VolBIT Formulas Blitz |

27 |
P27 - New Password |
Codeforces |
VK Cup 2017 - Qualification 2 |

28 |
P28 - Divisibility by Eight |
Codeforces |
Codeforces Round #306 (Div. 2) |

29 |
P29 - Intercepted Message |
Codeforces |
Codeforces Round #469 (Div. 2) |

30 |
P30 - Bear and Three Musketeers |
Codeforces |
Codeforces Round #318 [RussianCodeCup Thanks-Round] (Div. 2) |

31 |
P31 - The number of positions |
Codeforces |
Codeforces Beta Round #92 (Div. 2 Only) |

32 |
P32 - Ilya and Escalator |
Codeforces |
Codeforces Round #293 (Div. 2) |

33 |
P33 - Minimum number of steps |
Codeforces |
Codeforces Round #411 (Div. 1) & Codeforces Round #411 (Div. 2) |

34 |
P34 - Gravity Flip |
Codeforces |
Codeforces Round #238 (Div. 2) |

35 |
P35 - System of Equations |
Codeforces |
Codeforces Round #131 (Div. 2) |

36 |
P36 - k-Factorization |
Codeforces |
Educational Codeforces Round 19 |

37 |
P37 - Glass Carving |
Codeforces |
Codeforces Round #296 (Div. 2) & Codeforces Round #296 (Div. 1) |

38 |
P38 - New Year Permutation |
Codeforces |
Good Bye 2014 |

39 |
P39 - Xenia and Ringroad |
Codeforces |
Codeforces Round #197 (Div. 2) |

40 |
P40 - Caisa and Sugar |
Codeforces |
Codeforces Round #264 (Div. 2) |

41 |
P41 - Reconnaissance 2 |
Codeforces |
Codeforces Beta Round #34 (Div. 2) |

42 |
P42 - The number on the board |
Codeforces |
Codeforces Round #427 (Div. 2) |

43 |
P43 - Pineapple Incident |
Codeforces |
Codeforces Round #362 (Div. 2) |

44 |
P44 - Keyboard Layouts |
Codeforces |
Codeforces Round #424 (Div. 2, rated, based on VK Cup Finals) |

45 |
P45 - Karen and Game |
Codeforces |
Codeforces Round #419 (Div. 1) & Codeforces Round #419 (Div. 2) |

46 |
P46 - Increase and Decrease |
Codeforces |
Codeforces Round #151 (Div. 2) |

47 |
P47 - T-shirt buying |
Codeforces |
Playrix Codescapes Cup (Codeforces Round #413, rated, Div. 1 + Div. 2) |

48 |
P48 - Perfect Pair |
Codeforces |
Codeforces Round #188 (Div. 1) & Codeforces Round #188 (Div. 2) |

49 |
P49 - Amusing Joke |
Codeforces |
Codeforces Round #101 (Div. 2) |

50 |
P50 - SwapSort |
Codeforces |
Codeforces Round #277.5 (Div. 2) |

51 |
P51 - Opposites Attract |
Codeforces |
Codeforces Beta Round #95 (Div. 2) |

52 |
P52 - Magic Numbers |
Codeforces |
Codeforces Round #189 (Div. 2) |

53 |
P53 - Minimum Value Rectangle |
Codeforces |
Educational Codeforces Round 49 (Rated for Div. 2) |

54 |
P54 - Wet Shark and Bishops |
Codeforces |
Codeforces Round #341 (Div. 2) |

55 |
P55 - Code For 1 |
Codeforces |
Divide by Zero 2017 and Codeforces Round #399 (Div. 1 + Div. 2, combined) |

56 |
P56 - Vanya and Food Processor |
Codeforces |
Codeforces Round #355 (Div. 2) |

57 |
P57 - Mike and Fun |
Codeforces |
Codeforces Round #305 (Div. 2) |

58 |
P58 - Super Agent |
Codeforces |
Codeforces Beta Round #12 (Div 2 Only) |

59 |
P59 - Pizza, Pizza, Pizza!!! |
Codeforces |
Codeforces Round #482 (Div. 2) |

60 |
P60 - Little Girl and Maximum Sum |
Codeforces |
Codeforces Round #169 (Div. 2) |