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二部图匹配问题，自己要写的代码就几行

Posted by mathzqy at 2004-08-03 22:53:43 on Problem 1716
In Reply To:谁能讲讲这题怎么贪心吗? 只会用差分约束 (类似1201) Posted by:atlas_of_rruucc at 2004-08-03 00:19:31 
> 是不是两次对要求"至少为1"的问题进行贪心?
> 用贪心过了的高手能讲讲吗? 先谢过了
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