1 |
P1 - Oath of the Night's Watch |
Codeforces |
Divide by Zero 2017 and Codeforces Round #399 (Div. 1 + Div. 2, combined) |

2 |
P2 - Laptops |
Codeforces |
Codeforces Round #260 (Div. 2) |

3 |
P3 - Snacktower |
Codeforces |
Codeforces Round #398 (Div. 2) |

4 |
P4 - Burglar and Matches |
Codeforces |
Codeforces Beta Round #16 (Div. 2 Only) |

5 |
P5 - Valera and Contest |
Codeforces |
Codeforces Round #216 (Div. 2) |

6 |
P6 - Dreamoon and Sums |
Codeforces |
Codeforces Round #272 (Div. 2) & Codeforces Round #272 (Div. 1) |