1 |
P1 - Secrets |
Codeforces |
Codeforces Round #194 (Div. 1) & Codeforces Round #194 (Div. 2) |

2 |
P2 - Milking cows |
Codeforces |
Codeforces Round #225 (Div. 1) & Codeforces Round #225 (Div. 2) |

3 |
P3 - Primes on Interval |
Codeforces |
Codeforces Round #147 (Div. 2) |

4 |
P4 - Bombs |
Codeforces |
Codeforces Round #203 (Div. 2) |

5 |
P5 - Rational Resistance |
Codeforces |
Codeforces Round #200 (Div. 1) & Codeforces Round #200 (Div. 2) |

6 |
P6 - Appleman and Toastman |
Codeforces |
Codeforces Round #263 (Div. 1) & Codeforces Round #263 (Div. 2) |

7 |
P7 - Dima and Staircase |
Codeforces |
Codeforces Round #167 (Div. 2) & Codeforces Round #167 (Div. 1) |

8 |
P8 - k-Multiple Free Set |
Codeforces |
Codeforces Round #168 (Div. 1) & Codeforces Round #168 (Div. 2) |

9 |
P9 - Little Pony and Expected Maximum |
Codeforces |
Codeforces Round #259 (Div. 1) & Codeforces Round #259 (Div. 2) |

10 |
P10 - Boredom |
Codeforces |
Codeforces Round #260 (Div. 1) & Codeforces Round #260 (Div. 2) |

11 |
P11 - Wizards and Trolleybuses |
Codeforces |
Codeforces Round #114 (Div. 1) & Codeforces Round #114 (Div. 2) |

12 |
P12 - Anya and Smartphone |
Codeforces |
Codeforces Round #293 (Div. 2) |

13 |
P13 - Polycarpus' Dice |
Codeforces |
Codeforces Round #298 (Div. 2) |

14 |
P14 - LCM Challenge |
Codeforces |
Codeforces Round #146 (Div. 1) & Codeforces Round #146 (Div. 2) |

15 |
P15 - 24 Game |
Codeforces |
Codeforces Round #268 (Div. 1) & Codeforces Round #268 (Div. 2) |

16 |
P16 - Lucky Permutation |
Codeforces |
Codeforces Round #176 (Div. 1) & Codeforces Round #176 (Div. 2) |

17 |
P17 - Lorenzo Von Matterhorn |
Codeforces |
Codeforces Round #362 (Div. 1) & Codeforces Round #362 (Div. 2) |

18 |
P18 - Plus and Square Root |
Codeforces |
Codeforces Round #372 (Div. 1) & Codeforces Round #372 (Div. 2) |

19 |
P19 - Title |
Codeforces |
Codeforces Beta Round #55 (Div. 2) |

20 |
P20 - Anya and Ghosts |
Codeforces |
Codeforces Round #288 (Div. 2) |

21 |
P21 - Roads in Berland |
Codeforces |
Codeforces Beta Round #25 (Div. 2 Only) |

22 |
P22 - Permutations |
Codeforces |
Codeforces Round #119 (Div. 1) & Codeforces Round #119 (Div. 2) |

23 |
P23 - Cthulhu |
Codeforces |
Codeforces Beta Round #80 (Div. 1 Only) & Codeforces Beta Round #80 (Div. 2 Only) |

24 |
P24 - Maze |
Codeforces |
Codeforces Round #222 (Div. 1) & Codeforces Round #222 (Div. 2) |

25 |
P25 - Polycarp at the Radio |
Codeforces |
Codeforces Round #375 (Div. 2) |

26 |
P26 - Thor |
Codeforces |
Codeforces Round #366 (Div. 1) & Codeforces Round #366 (Div. 2) |

27 |
P27 - Hard problem |
Codeforces |
Codeforces Round #367 (Div. 2) |

28 |
P28 - Unusual Product |
Codeforces |
Codeforces Round #238 (Div. 2) & Codeforces Round #238 (Div. 1) |

29 |
P29 - Palindrome Transformation |
Codeforces |
Codeforces Round #277 (Div. 2) |

30 |
P30 - Chain Reaction |
Codeforces |
Codeforces Round #336 (Div. 1) & Codeforces Round #336 (Div. 2) |

31 |
P31 - Removing Columns |
Codeforces |
Codeforces Round #283 (Div. 2) & Codeforces Round #283 (Div. 1) |

32 |
P32 - Newspaper Headline |
Codeforces |
Codeforces Beta Round #75 (Div. 1 Only) & Codeforces Beta Round #75 (Div. 2 Only) |

33 |
P33 - Crazy Town |
Codeforces |
Codeforces Round #284 (Div. 1) & Codeforces Round #284 (Div. 2) |

34 |
P34 - Text Editor |
Codeforces |
Codeforces Round #154 (Div. 2) |

35 |
P35 - Alternative Thinking |
Codeforces |
Codeforces Round #334 (Div. 1) & Codeforces Round #334 (Div. 2) |

36 |
P36 - Tennis Championship |
Codeforces |
Codeforces Round #382 (Div. 2) & Codeforces Round #382 (Div. 1) |

37 |
P37 - Shifts |
Codeforces |
Codeforces Round #142 (Div. 1) & Codeforces Round #142 (Div. 2) |

38 |
P38 - Guess Your Way Out! |
Codeforces |
Codeforces Round #287 (Div. 2) |

39 |
P39 - Frames |
Codeforces |
Codeforces Beta Round #76 (Div. 1 Only) & Codeforces Beta Round #76 (Div. 2 Only) |

40 |
P40 - Alyona and the Tree |
Codeforces |
Codeforces Round #358 (Div. 2) |

41 |
P41 - Biathlon |
Codeforces |
Codeforces Beta Round #72 (Div. 2 Only) |

42 |
P42 - Marina and Vasya |
Codeforces |
Codeforces Round #324 (Div. 2) |

43 |
P43 - The Two Routes |
Codeforces |
Codeforces Round #333 (Div. 1) & Codeforces Round #333 (Div. 2) |

44 |
P44 - Divide by Three |
Codeforces |
Educational Codeforces Round 18 |