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请教大牛一下假设A跟B有罗曼史，那么B跟A肯定有罗曼史，所以我在构造二分图的时候，对于(A B)和(B A)这种我只构建一个，就是单向的，那么得出的结果应该是n-max_match,但wa了，请问是什么原因… Followed by: Post your reply here: |
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