MornStar @ 2025-11-10 17:30:21
直到 NOIP 才知道自己计数多 fw，蓝到黑均可，希望有一些经典的 trick，或者比较启发性的题。
by Phobia @ 2025-11-10 17:34:41
https://www.luogu.com.cn/problem/AT_agc017_f
by headless_piston @ 2025-11-10 17:41:02
https://www.luogu.com.cn/problem/P5664
by Reply_ @ 2025-11-10 18:12:27
https://www.luogu.com.cn/problem/CF995F
by _Communist @ 2025-11-10 18:26:42
https://qoj.ac/problem/7766
by wjyppm1403 @ 2025-11-10 18:32:26
https://www.luogu.com.cn/problem/CF1608F