2020年8月23日
[USACO17JAN]Subsequence Reversal
摘要： 题目：Subsequence Reversal 网址：https://www.luogu.com.cn/problem/P3607 题目描述 Farmer John is arranging his \(N\) cows in a line to take a photo ($1 \leq N \l 阅读全文
posted @ 2020-08-23 11:38 大秦帝国 阅读(190) 评论(0) 推荐(0)