求一个大致思路

P2664 树上游戏

https://yfscfs.gitee.io/post/%E6%B4%9B%E8%B0%B7-p2664-%E6%A0%91%E4%B8%8A%E6%B8%B8%E6%88%8F-%E7%82%B9%E5%88%86%E6%B2%BB/
by 影法师 @ 2020-03-04 11:21:08


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