cf存题

https://codeforces.ml/contest/1738/problem/B

https://codeforces.ml/contest/1735/problem/C

https://www.luogu.com.cn/problem/CF2A

posted @ 2022-10-07 20:23  江上舟摇  阅读(5)  评论(0)  编辑  收藏  举报