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猜了个结论……

Posted by Sempr at 2008-06-30 08:24:25 on Problem 3604
In Reply To:这题有解题报告没 Posted by:zfy0701 at 2008-06-29 21:15:41
> 我是用分解质因子 + dfs的,很慢很慢
> 希望知道更好的做法

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