zhber
有好多做过的题没写下来,如果我还能记得就补吧
摘要: DescriptionYou are given a tree withNnodes. The tree’s nodes are numbered 1 throughNand its edges are numbered 1 throughN− 1. Each edge is associated ... 阅读全文
posted @ 2014-12-21 20:55 zhber 阅读(117) 评论(0) 推荐(0) 编辑