好！！AK大佬！！
by Erenmikasa @ 2022-10-31 18:56:18
@[Erenmikasa](/user/596899) ？？？
by Joestar @ 2022-10-31 18:57:21
洛谷的数据好像没有0。
by SilviaLss @ 2022-10-31 19:00:02
@[Silviasylvia](/user/121275) 有0
by 二叉苹果树 @ 2022-10-31 19:03:00
去小图灵看看吧
by Valhalla_Is_Calling @ 2022-10-31 19:13:41