为啥开O2全MLE，关O2AC？

P1196 [NOI2002] 银河英雄传说

@[XiaoYiii](/user/1025891) Make_set 没返回值。
by xiaoshumiao @ 2024-02-01 20:54:12

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@[xiaoshumiao](/user/1008513) (⊙o⊙) 此贴结
by XiaoYiii @ 2024-02-01 21:03:34

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