Hint: 本题单适合用于自虐和消磨时间。 CF-Gym101620E https://codeforces.com/gym/101620 ARC109F https://atcoder.jp/contests/arc109/tasks/arc109_f CF1456D https://codeforces.com/contest/1456/problem/D 相关文章: 2022-12-23 2021-11-12 2021-05-01 2021-06-15 2022-02-27 2021-09-22 2021-07-18 2021-12-05