提交记录在[这里](https://www.luogu.com.cn/record/116245112)
by whssy @ 2023-07-18 17:57:39
已A
谢谢那些主动点进来的人
end
by whssy @ 2023-07-18 18:09:10
42行取max
by whssy @ 2023-07-18 18:10:03