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谢谢了 多亏了你的数据

Posted by iYao at 2010-08-17 14:41:08 on Problem 1690
In Reply To:提供几组测试数据 Posted by:yc0576 at 2010-02-25 19:38:04 
> ((H)-((H)+(H)))
> (((H)-(H-H))+((H)+(H)))
> ((H)+(H)+(H))
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