1 |
P1 - Blood Cousins |
Codeforces |
Codeforces Round #130 (Div. 2) |

2 |
P2 - Fools and Roads |
Codeforces |
Codeforces Round #121 (Div. 1) & Codeforces Round #121 (Div. 2) |

3 |
P3 - Minimum spanning tree for each edge |
Codeforces |
Educational Codeforces Round 3 |

4 |
P4 - Company |
Codeforces |
Codeforces Round #520 (Div. 2) |

5 |
P5 - A and B and Lecture Rooms |
Codeforces |
Codeforces Round #294 (Div. 2) |

6 |
P6 - Xenia and Bit Operations |
Codeforces |
Codeforces Round #197 (Div. 2) |

7 |
P7 - Knight Tournament |
Codeforces |
Codeforces Round #207 (Div. 1) & Codeforces Round #207 (Div. 2) |

8 |
P8 - Pashmak and Parmida's problem |
Codeforces |
Codeforces Round #261 (Div. 2) |

9 |
P9 - Learning Languages |
Codeforces |
Codeforces Round #170 (Div. 1) & Codeforces Round #170 (Div. 2) |

10 |
P10 - Ice Skating |
Codeforces |
Codeforces Round #134 (Div. 1) & Codeforces Round #134 (Div. 2) |

11 |
P11 - Misha and Changing Handles |
Codeforces |
Codeforces Round #285 (Div. 2) |

12 |
P12 - Cut Ribbon |
Codeforces |
Codeforces Round #119 (Div. 2) |

13 |
P13 - Boredom |
Codeforces |
Codeforces Round #260 (Div. 1) & Codeforces Round #260 (Div. 2) |