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HASH本题用hash查找的东西就是点 通过两个点计算出正方形位置对应的其余两个点， 查找其余两个点是否也存在。 可以用set过，险过3485MS 如果WA了，多数是计算其余两个点的时候写错了 Followed by: Post your reply here: |
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