D. Simple Subset 题目连接： http://www.codeforces.com/contest/665/problem/D Description A tuple of positive integer…

A. Ostap and Grasshopper 题面 On the way to Rio de Janeiro Ostap kills time playing with a grasshopper he took w…

C. Electric Charges 题目连接： http://www.codeforces.com/contest/623/problem/C Description Programmer Sasha is a st…

B. Kay and Snowflake 题目连接： http://www.codeforces.com/contest/685/problem/B Description After the piece of a de…

E. Robot Arm 题目连接： http://www.codeforces.com/contest/618/problem/E Description Roger is a robot. He has an arm…

B. Scrambled 题目连接： http://www.codeforces.com/contest/656/problem/B Description Btoh yuo adn yuor roomatme lhoa…

D. Rosetta Problem 题目连接： http://www.codeforces.com/contest/656/problem/D Description ++++++++[>+>++>+…

E. Intellectual Inquiry 题目连接： http://www.codeforces.com/contest/655/problem/E Description After getting kicked…

C. Spy Syndrome 2 题目连接： http://www.codeforces.com/contest/633/problem/C Description After observing the result…

D. Longest Subsequence 题目连接： http://www.codeforces.com/contest/632/problem/D Description You are given array a…

D. Lakes in Berland 题目连接： http://codeforces.com/contest/723/problem/D Description The map of Berland is a rect…

Problem C. Contest 题目连接： http://codeforces.com/gym/100714 Description The second round of the annual student c…