2018年8月24日
[HDU--2586] How far away ? 倍增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 @ 2018-08-24 16:28 Nlifea 阅读(107) 评论(0) 推荐(0) 编辑