好像忘贴网址了
[LOJ](https://loj.ac/s/1786391)
[luogu](https://www.luogu.com.cn/record/111685539)
by aru123 @ 2023-05-31 16:31:02
A了，读入的问题，还调了我2俩小时，服了
by aru123 @ 2023-05-31 18:27:18