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这个我当时当然知道……只是最初的程序就是出不来……

Posted by frkstyc at 2007-09-09 06:15:29 on Problem 1898
In Reply To:abcdefghijiklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ 1234567890. Posted by:alpc117 at 2007-09-08 21:11:34 
> 这个H=6.00
> 总共64个字符
> 64*(-1/64*log(64))=6
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