2017年4月27日
cf-343D (深搜序+线段树)
摘要： 题目 链接 http://codeforces.com/contest/343/problem/D Description Mad scientist Mike has constructed a rooted tree, which consists of n vertices. Each ver 阅读全文
posted @ 2017-04-27 13:28 Jacky#50 阅读(101) 评论(0) 推荐(0) 编辑