2015年8月3日
【LCA】SPOJ QTREE2
摘要： You are given a tree (an undirected acyclic connected graph) withNnodes, and edges numbered 1, 2, 3...N-1. Each edge has an integer value assigned to ... 阅读全文
posted @ 2015-08-03 19:39 杨炫越 阅读(273) 评论(0) 推荐(0)