1 |
P1 - Flying Saucer Segments |
Codeforces |
Codeforces Round #140 (Div. 1) & Codeforces Round #140 (Div. 2) |

2 |
P2 - Dorm Water Supply |
Codeforces |
Codeforces Beta Round #83 (Div. 1 Only) & Codeforces Beta Round #83 (Div. 2 Only) |

3 |
P3 - Solution for Cube |
Codeforces |
Codeforces Round #444 (Div. 2) |

4 |
P4 - Phone Numbers |
Codeforces |
Codeforces Round #466 (Div. 2) |

5 |
P5 - Ping-Pong (Easy Version) |
Codeforces |
Codeforces Round #189 (Div. 2) |

6 |
P6 - Cave Painting |
Codeforces |
Codeforces Round #461 (Div. 2) |

7 |
P7 - Party Lemonade |
Codeforces |
Hello 2018 |

8 |
P8 - From Y to Y |
Codeforces |
Codeforces Round #431 (Div. 1) & Codeforces Round #431 (Div. 2) |

9 |
P9 - Polycarp at the Radio |
Codeforces |
Codeforces Round #375 (Div. 2) |

10 |
P10 - Anton and Lines |
Codeforces |
Codeforces Round #329 (Div. 2) |

11 |
P11 - Exams |
Codeforces |
Codeforces Round #377 (Div. 2) |

12 |
P12 - Substring |
Codeforces |
Codeforces Round #460 (Div. 2) |

13 |
P13 - Triangle |
Codeforces |
Codeforces Round #239 (Div. 1) & Codeforces Round #239 (Div. 2) |

14 |
P14 - George and Number |
Codeforces |
Codeforces Round #227 (Div. 2) |

15 |
P15 - Help Farmer |
Codeforces |
Codeforces Round #102 (Div. 1) & Codeforces Round #102 (Div. 2) |

16 |
P16 - Dima and Two Sequences |
Codeforces |
Codeforces Round #167 (Div. 2) & Codeforces Round #167 (Div. 1) |

17 |
P17 - The Wall (medium) |
Codeforces |
Helvetic Coding Contest 2016 online mirror (teams, unrated) |