摘要: 题目链接:http://codeforces.com/problemset/problem/1187/E E. Tree Painting You are given a tree (an undirected connected acyclic graph) consisting of n<!-- 阅读全文
posted @ 2019-07-09 10:36 cglong 阅读(367) 评论(0) 推荐(0) 编辑