2019年3月3日
Query on a tree V（SPOJ - QTREE5）
摘要： 题目描述： You are given a tree (an acyclic undirected connected graph) with N nodes. The tree nodes are numbered from 1 to N. We define dist(a, b) as the 阅读全文
posted @ 2019-03-03 10:30 Hëinz 阅读(352) 评论(0) 推荐(0)