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anyway, similar cases should be handled in this way.

Posted by contest_clarificator at 2006-05-28 15:21:26 on Problem 2830
In Reply To:Re:yes Posted by:Iambitious at 2006-05-28 15:20:28 
> 题里不是说|ai| < 30
> 不会出现这种情况吧
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