1 |
P1 - Cipher |
Codeforces |
Codeforces Round #110 (Div. 1) & Codeforces Round #110 (Div. 2) |

2 |
P2 - Sequence |
Codeforces |
Codeforces Beta Round #13 |

3 |
P3 - Super M |
Codeforces |
Codeforces Round #328 (Div. 2) |

4 |
P4 - Pig and Palindromes |
Codeforces |
Codeforces Round #316 (Div. 2) |

5 |
P5 - Ralph And His Magic Field |
Codeforces |
Codeforces Round #447 (Div. 2) |

6 |
P6 - Compatible Numbers |
Codeforces |
Codeforces Round #112 (Div. 2) |

7 |
P7 - Anton and School - 2 |
Codeforces |
Codeforces Round #404 (Div. 2) |