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2017年8月24日
SPOJ QTREE - Query on a tree
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 @ 2017-08-24 20:26 小草的大树梦 阅读(209) 评论(0) 推荐(0)