摘要: QTREE - Query on a tree #tree #tree You are given a tree (an acyclic undirected connected graph) with N nodes, and edges numbered 1, 2, 3...N-1. We wi 阅读全文
posted @ 2017-10-18 21:26 luckilzy 阅读(428) 评论(0) 推荐(0) 编辑