2017年5月25日
[spoj 375]QTREE - Query on a tree[树链剖分]
摘要： You are given a tree (an acyclic undirected connected graph) with N nodes, and edges numbered 1, 2, 3...N-1. We will ask you to perfrom some instructi 阅读全文
posted @ 2017-05-25 23:24 ZYBGMZL 阅读(164) 评论(0) 推荐(0)