摘要: 【题目链接】:http://acm.hdu.edu.cn/showproblem.php?pid=6867 【题目】: Problem Description You are given a tree consisting of n vertices numbered 1 to n rooted a 阅读全文
posted @ 2020-08-18 19:25 conver^_^ 阅读(262) 评论(0) 推荐(0) 编辑