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Re:寒，这组数据竟然没有 1 2 2 3 3 1 5 6 0 0，我过了的程序竟然判断is tree，寒In Reply To:Re:寒，这组数据竟然没有 1 2 2 3 3 1 5 6 0 0，我过了的程序竟然判断is tree，寒 Posted by:546711990 at 2009-07-14 18:04:12 > 晕，我的程序对这组数据判断为这是一棵树的，难道就是因为这个我WA了好几次？ 这个不是树 Followed by:
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