摘要：在cxy大佬的扶持下，对原来的博客经行了大改造 搬到原来的网站去了 "传送门" 阅读全文

摘要：Query on a tree III You are given a node labeled rooted tree with n nodes. Define the query (x, k): Find the node whose label is k th largest in the s 阅读全文

摘要：Query on a tree II You are given a tree (an undirected acyclic connected graph) with N nodes, and edges numbered 1, 2, 3...N 1. Each edge has an integ 阅读全文

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