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Re:如果输入数据是空的,你应该输出Impossible

Posted by asuran at 2009-10-10 03:51:55 on Problem 2513
In Reply To:如果输入数据是空的,你应该输出Impossible Posted by:xfxyjwf at 2008-01-04 08:53:21
搞, 搞毛阿, WA了N次, 

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