WA了4个点??求解。

P2415 集合求和

s是啥
by MING2110300915 @ 2021-12-30 12:52:04


@[Arcturus1350](/user/57699) 没告诉你集合的个数。。。
by YuanHaoYu6315 @ 2023-08-23 13:50:20


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