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这个题,我当时想也没想就搞了一个二分图匹配.

Posted by xfxyjwf at 2005-07-28 14:17:21 on Problem 2495
In Reply To:糊里糊涂的就过了，谁能帮忙解释一下啊．．． Posted by:zdker at 2005-07-28 14:09:10 
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先填充这个奇*偶的矩形,
剩下的就容易了.
画这样一个图,不知道你能不能明白.
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