摘要: Travel The country frog lives in has nn towns which are conveniently numbered by 1,2,…,n. Among n(n−1) / 2 pairs of towns, m of them are connected by 阅读全文
posted @ 2016-08-19 10:41 苍鼠 阅读(264) 评论(0) 推荐(0) 编辑