dino @ 2023-10-27 12:52:54
建议去掉DP标签（见多倍经验P1114，CF873B）
顺便去掉CF873B的概率论
by dino @ 2023-10-27 12:53:57
@10circle
by 10circle @ 2023-10-27 13:04:15
已修改
by GoodLuckCat @ 2023-10-27 13:08:40
楼下！