B. Verse Pattern 题目连接： http://codeforces.com/contest/722/problem/B Description You are given a text consisting…

B. Lovely Palindromes 题目连接： http://www.codeforces.com/contest/688/problem/B Description Pari has a friend who …

B. Economy Game 题目连接： http://www.codeforces.com/contest/681/problem/B Description Kolya is developing an econo…

A. Opponents 题目连接： http://www.codeforces.com/contest/688/problem/A Description Arya has n opponents in the sch…

A. Help Farmer 题目连接： http://www.codeforces.com/contest/142/problem/A Description Once upon a time in the Kingd…

A. Holidays 题目连接： http://www.codeforces.com/contest/670/problem/A Description On the planet Mars a year lasts …

A. Far Relative’s Birthday Cake 题目连接： http://www.codeforces.com/contest/629/problem/A Description Door’s…

B. Code obfuscation 题目连接： http://codeforces.com/contest/765/problem/B Description Kostya likes Codeforces cont…

D. Fibonacci-ish 题目连接： http://www.codeforces.com/contest/633/problem/D Description Yash has recently learnt ab…

D. Number of Parallelograms 题目连接： http://www.codeforces.com/contest/660/problem/D Description You are given n …

G. Yash And Trees 题目连接： http://www.codeforces.com/contest/633/problem/G Description Yash loves playing with tr…

A. Anton and Danik 题目连接： http://codeforces.com/contest/734/problem/A Description Anton likes to play chess, an…