2020年4月7日
P2882 Face The Right Way G 题解
摘要： 题目 Farmer John has arranged his N $(1 ≤ N ≤ 5,000)$ cows in a row and many of them are facing forward, like good cows. Some of them are facing backwar 阅读全文
posted @ 2020-04-07 12:48 YouXam 阅读(171) 评论(0) 推荐(0) 编辑