1 |
P1 - Chtholly's request |
Codeforces |
Codeforces Round #449 (Div. 2) |

2 |
P2 - Yaroslav and Permutations |
Codeforces |
Codeforces Round #179 (Div. 2) |

3 |
P3 - Permutation Cycle |
Codeforces |
ICM Technex 2018 and Codeforces Round #463 (Div. 1 + Div. 2, combined) |

4 |
P4 - Bear and Different Names |
Codeforces |
VK Cup 2017 - Round 1 |

5 |
P5 - Position in Fraction |
Codeforces |
Codeforces Round #450 (Div. 2) |

6 |
P6 - Trip For Meal |
Codeforces |
Codeforces Round #441 (Div. 2, by Moscow Team Olympiad) |

7 |
P7 - Lorenzo Von Matterhorn |
Codeforces |
Codeforces Round #362 (Div. 1) & Codeforces Round #362 (Div. 2) |

8 |
P8 - Cover Points |
Codeforces |
Codeforces Round #511 (Div. 2) |

9 |
P9 - Nastya and an Array |
Codeforces |
Codeforces Round #489 (Div. 2) |

10 |
P10 - Queries about less or equal elements |
Codeforces |
Educational Codeforces Round 2 |

11 |
P11 - Pythagorean Triples |
Codeforces |
Codeforces Round #368 (Div. 2) |

12 |
P12 - Pineapple Incident |
Codeforces |
Codeforces Round #362 (Div. 2) |