摘要：
题目链接：http://codeforces.com/contest/381/problem/E E. Sereja and Brackets time limit per test 1 second memory limit per test 256 megabytes input standar 阅读全文
摘要：
题目链接：http://codeforces.com/contest/598/problem/E E. Chocolate Bar time limit per test 2 seconds memory limit per test 256 megabytes input standard inp 阅读全文