这里是[AC记录](https://www.luogu.com.cn/record/67617103)
by 王99998 @ 2022-01-23 12:32:21
数据的确水了
by OldVagrant @ 2022-01-23 12:34:49
我 $n^3$ 都[过了](https://www.luogu.com.cn/record/101095555)[捂脸]
by like_rain @ 2023-02-01 20:53:40
$n^2$过百万啊，找了半天dp做法（悲）
by Sesen @ 2023-03-08 09:06:31