1 |
P1 - The Child and Zoo |
Codeforces |
Codeforces Round #250 (Div. 2) & Codeforces Round #250 (Div. 1) |

2 |
P2 - Design Tutorial: Inverse the Problem |
Codeforces |
Codeforces Round #270 |

3 |
P3 - Dungeons and Candies |
Codeforces |
Zepto Code Rush 2014 |

4 |
P4 - Hierarchy |
Codeforces |
Codeforces Beta Round #17 |

5 |
P5 - Learning Languages |
Codeforces |
Codeforces Round #170 (Div. 1) & Codeforces Round #170 (Div. 2) |

6 |
P6 - DZY Loves Chemistry |
Codeforces |
Codeforces Round #254 (Div. 2) |

7 |
P7 - Cthulhu |
Codeforces |
Codeforces Beta Round #80 (Div. 1 Only) & Codeforces Beta Round #80 (Div. 2 Only) |

8 |
P8 - Roads not only in Berland |
Codeforces |
Codeforces Beta Round #25 (Div. 2 Only) |

9 |
P9 - pSort |
Codeforces |
Codeforces Beta Round #28 (Codeforces format) |

10 |
P10 - 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) |