A. Short Program link http://codeforces.com/contest/878/problem/A describe Petya learned a new programming lan…

Problem I. Interest Targeting 题目连接： http://codeforces.com/gym/100714 Description A unique display advertisemen…

Codeforces Round #271 (Div. 2) A – Keyboard 题意 给你一个字符串，问你这个字符串在键盘的位置往左边挪一位，或者往右边挪一位字符，这个字符串是什么样子 题解 模拟一下…

A. Triangle 题目连接： http://codeforces.com/contest/6/problem/A Description Johnny has a younger sister Anne, who …

A. The New Year: Meeting Friends 题目连接： http://codeforces.com/contest/723/problem/A Description There are three…

Problem E: Su-Su-Sudoku/center> 题目连接： http://codeforces.com/gym/100646/attachments Description By now, ever…

A. A Good Contest 题目连接： http://www.codeforces.com/contest/681/problem/A Description Codeforces user’ han…

You’ll be Working on the Railroad 题目连接： http://codeforces.com/gym/100646/attachments Description Congratulatio…

A. Kalevitch and Chess 题目连接： http://www.codeforces.com/contest/7/problem/A Description A famous Berland’…

E. Product Sum 题目连接： http://www.codeforces.com/contest/631/problem/E Description Blake is the boss of Kris, ho…

Codeforces Beta Round #83 (Div. 1 Only) A. Dorm Water Supply 题意 给你一个n点m边的图，保证每个点的入度和出度最多为1 如果这个点入度为0，那么这个点就是水龙…

B. Before an Exam 题目连接： http://www.codeforces.com/contest/4/problem/B Description Tomorrow Peter has a Biology…