随笔分类 -  点分治

Codeforces 161D Distance in Tree(树的点分治)
摘要：A tree is a connected graph that doesn't contain any cycles.The distance between two vertices of a tree is the length (in edges) of the shortest path 阅读全文
posted @ 2019-09-25 19:36 Ellery_lrh 阅读(247) 评论(0) 推荐(0)