好像前面那张少了条灰线
by Figo17 @ 2021-11-18 16:47:00
都可以感性理解,不过确实证明了更好
by Foreverxxx @ 2021-11-18 17:04:03
![](https://cdn.luogu.com.cn/upload/image_hosting/qb1mf34w.png)
by sunyuheng365 @ 2023-04-26 13:24:00
顶
by bloodstalk @ 2023-10-09 18:52:28
顶
by 谢睿迪666 @ 2023-11-17 08:13:32
@[sunyuheng365](/user/638609) 感谢!
by 谢睿迪666 @ 2023-11-17 08:14:10