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可是我把 x+y>0 改成 x!=-1 && y!=-1 就过了

Posted by zzningxp at 2005-08-23 18:53:06 on Problem 2502
In Reply To:Each subway line consists of the non-negative integer x,y coordinates of each stop on the line, in order Posted by:Ikki at 2005-08-23 18:14:20


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