A. Infinite Sequence 题目连接： http://www.codeforces.com/contest/675/problem/A Description Vasya likes everything …

D. Anton and Chess 题目连接： http://codeforces.com/contest/734/problem/D Description Anton likes to play chess. Al…

A. Summer Camp 题目连接： http://www.codeforces.com/contest/672/problem/A Description Every year, hundreds of peopl…

E. Thief in a Shop 题目连接： http://www.codeforces.com/contest/632/problem/E Description A thief made his way to a…

B. Text Document Analysis 题目连接： http://codeforces.com/contest/723/problem/B Description Modern text editors us…

Problem F. Judging Time Prediction 题目连接： http://www.codeforces.com/gym/100253 Description It is not easy to pr…

D. Tree Construction 题目连接： http://www.codeforces.com/contest/675/problem/D Description During the programming …

A. Replacement 题目连接： http://codeforces.com/contest/135/problem/A Description Little Petya very much likes arra…

D. Persistent Bookcase 题目连接： http://www.codeforces.com/contest/707/problem/D Description Recently in school Al…

C. Pythagorean Triples 题目连接： http://www.codeforces.com/contest/707/problem/C Description Katya studies in a fi…

B. Passwords 题目连接： http://codeforces.com/contest/721/problem/B Description Vanya is managed to enter his favou…

E. Alyona and Triangles 题目连接： http://codeforces.com/contest/682/problem/E Description You are given n points w…