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double 有效位好象是15,16吧,如果大了,肯定就有误差了的.

Posted by nwpu_ghost at 2007-07-10 18:23:27 on Problem 3252
In Reply To:竟然有误差~~ Posted by:sparkling at 2007-07-10 17:44:03 
建议做一下PKU上求组合数的题目
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