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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 on Problem 2502
In Reply To:我的意思不是说 有(-1,-1) 这个点 而是其他负坐标点 Posted by:zzningxp at 2005-08-23 16:45:44


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