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直接用【凸包】+O(n^2)的枚举距离就可以过了WA一直，没想明白why。看了一遍代码木有发现，来看讨论版，有位前人写的几条注意事项，最后一条说检查下cmp。我晕~~ a.y<b.y写成b.x<b.y，囧囧囧囧囧 Followed by: Post your reply here: |
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