Codeforces Round #629 (Div. 3) E. Tree Queries（lca题）
摘要：
https://codeforces.com/contest/1328/problem/E E. Tree Queries You are given a rooted tree consisting of nn vertices numbered from 11 to nn. The root o 阅读全文
posted @ 2020-03-28 21:28 Aminers 阅读(227) 评论(0) 推荐(0) 编辑
