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) |