随笔分类 -  图论_最近公共祖先(LCA)

hdu 2586 How far away ？（LCA）
摘要：Problem Description There are n houses in the village and some bidirectional roads connecting them. Every day peole always like to ask like this "How 阅读全文
posted @ 2018-11-30 22:58 霜雪千年 阅读(405) 评论(0) 推荐(0)