2018年9月3日
[Usaco2005 Dec]Cleaning Shifts 清理牛棚
摘要： 题目描述 Farmer John's cows, pampered since birth, have reached new heights of fastidiousness. They now require their barn to be immaculate. Farmer John, 阅读全文
posted @ 2018-09-03 21:38 k-z-j 阅读(288) 评论(0) 推荐(2) 编辑