2017年12月1日
Query on a tree I
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 @ 2017-12-01 14:30 Tyw_ei 阅读(153) 评论(0) 推荐(0) 编辑