打错了，是52分qwq
by Withers @ 2022-08-31 16:55:42
$p$ 不用判 $op\ge 3$ 吧
by Galex @ 2022-08-31 17:24:58
无论如何都要 $\oplus \ lst$
by Galex @ 2022-08-31 17:26:17
@[Withers](/user/481851)
by Galex @ 2022-08-31 17:26:28
@[Galex](/user/483037) 啊，过了，我智障了 
by Withers @ 2022-08-31 17:28:46