1 |
P1 - Maze |
Codeforces |
Codeforces Round #222 (Div. 1) & Codeforces Round #222 (Div. 2) |

2 |
P2 - DZY Loves Chessboard |
Codeforces |
Codeforces Round #254 (Div. 2) |

3 |
P3 - Bear and Elections |
Codeforces |
Codeforces Round #318 [RussianCodeCup Thanks-Round] (Div. 2) |

4 |
P4 - Ice Cave |
Codeforces |
Codeforces Round #301 (Div. 2) |

5 |
P5 - Hongcow Builds A Nation |
Codeforces |
Codeforces Round #385 (Div. 1) & Codeforces Round #385 (Div. 2) |

6 |
P6 - New Year Transportation |
Codeforces |
Good Bye 2014 |

7 |
P7 - Ice Skating |
Codeforces |
Codeforces Round #134 (Div. 1) & Codeforces Round #134 (Div. 2) |

8 |
P8 - Mr. Kitayuta's Colorful Graph |
Codeforces |
Codeforces Round #286 (Div. 1) & Codeforces Round #286 (Div. 2) & Codeforces Round #286 (Div. 1) & Codeforces Round #286 (Div. 2) |

9 |
P9 - Checkposts |
Codeforces |
Codeforces Round #244 (Div. 2) |

10 |
P10 - Almost Acyclic Graph |
Codeforces |
Educational Codeforces Round 36 (Rated for Div. 2) |