摘要：
题目链接：http://codeforces.com/problemset/problem/631/C C. Report time limit per test: 2 seconds memory limit per test: 256 megabytes Each month Blake get 阅读全文
摘要：
题目链接：http://codeforces.com/problemset/problem/631/D D. Messenger time limit per test: 2 seconds memory limit per test: 512 megabytes Each employee of 阅读全文