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可能没有说清楚,补充下.

Posted by zhaokkk27 at 2007-09-15 15:04:36 on Problem 1077
In Reply To:应该用什么HASH函数判重. Posted by:zhaokkk27 at 2007-09-14 19:13:56 
Ai=数字为i的数字的后面有几个比它小的(空格为数字9). (1<=i<=9)
Hash=sum(Ai*(i-1)!) (1<=i<=9)
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