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Re:http://acm.pku.edu.cn/JudgeOnline/showmessage?message_id=89830

Posted by scaneeling at 2008-08-04 19:53:45 on Problem 3604
In Reply To:http://acm.pku.edu.cn/JudgeOnline/showmessage?message_id=89830 Posted by:huangkun at 2008-07-17 12:24:39 
> C^m___n=\frac{n!}{m!(n-m)!}
  用这个求什么？
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