随笔分类 -  LCA

HDU 2586——How far away ？
摘要：Description There are n houses in the village and some bidirectional roads connecting them. Every day peole always like to ask like this "How far is i 阅读全文
posted @ 2019-02-17 15:39 winter-bamboo 阅读(137) 评论(0) 推荐(0)