摘要: 传送门:http://codeforces.com/problemset/problem/543/B B. Destroying Roads time limit per test:2 seconds memory limit per test:256 megabytes B. Destroying 阅读全文
posted @ 2017-10-30 22:01 D_O_Time 阅读(208) 评论(0) 推荐(0) 编辑