摘要: 题目 链接:http://acm.hdu.edu.cn/showproblem.php?pid=6567 Problem Description Avin has two trees which are not connected. He asks you to add an edge betwee 阅读全文
posted @ 2021-05-21 17:35 _comet 阅读(58) 评论(0) 推荐(0) 编辑