锰锌刚学树剖114514ms，0pts求调

P3833 [SHOI2012] 魔法树

@[ikun_zhs](/user/739250) 你是萌新，那我是啥？ 
by OldDriverTree @ 2023-02-20 19:04:30

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@[guoxiangyu66](/user/681036) ？
by SmileMask @ 2023-02-20 19:05:23

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@[ikun_zhs](/user/739250) 你 query 没 pushdown（）
by OldDriverTree @ 2023-02-23 21:37:33

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@[guoxiangyu66](/user/681036) thx
by SmileMask @ 2023-02-23 21:43:17

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