C. String Reconstruction 题目连接： http://codeforces.com/contest/828/problem/C Description Ivan had string s consi…

A. Dasha and Stairs 题目连接： http://codeforces.com/contest/761/problem/A Description On her way to programming sc…

B. Bear and Friendship Condition 题目连接： http://codeforces.com/contest/791/problem/B Description Bear Limak exam…

Codeforces Round #383 (Div. 2) A. Arpa’s hard exam and Mehrdad’s naive cheat 题意 求1378^n mod 10 题解 直接快速幂 代码 #in…

C. Cinema 题目连接： http://www.codeforces.com/contest/670/problem/C Description Moscow is hosting a major internat…

F. Double Knapsack 题目连接： http://www.codeforces.com/contest/618/problem/F Description You are given two multise…

C. Joty and Chocolate 题目连接： http://www.codeforces.com/contest/678/problem/C Description Little Joty has got a …

A. Berzerk 题目连接： http://codeforces.com/contest/786/problem/A Description Rick and Morty are playing their own …

D. Image Preview 题目连接： http://www.codeforces.com/contest/651/problem/D Description Vasya’s telephone con…

A. Bus to Udayland 题目连接： http://www.codeforces.com/contest/711/problem/A Description ZS the Coder and Chris th…

D. Friends and Subsequences 题目连接： http://www.codeforces.com/contest/689/problem/D Description Mike and !Mike a…

A. Robbers’ watch 题目连接： http://www.codeforces.com/contest/685/problem/A Description Robbers, who attacke…