2018年9月5日
Split The Tree（dfs序+树状数组）
摘要： Split The Tree 题目描述 You are given a tree with n vertices, numbered from 1 to n. ith vertex has a value wiWe define the weight of a tree as the number 阅读全文
posted @ 2018-09-05 19:04 Acerkoo 阅读(708) 评论(1) 推荐(1) 编辑