摘要: 一、题目 Description Farmer John went to cut some wood and left N (2 ≤ N ≤ 100,000) cows eating the grass, as usual. When he returned, he found to his hor 阅读全文
posted @ 2017-08-10 20:31 天涯惟笑 阅读(361) 评论(0) 推荐(0)