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虽然用板子一遍AC了，但有个地方建图还是有点迷？？把0点作为超级原点，m+h+1作为汇点，m和h之间应该建容量为1，费用为这两个点的距离大小。但为什么原点到m之间和h到汇点之间的边的容量应该为1，为n为什么就不行？ Followed by:
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