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请教一下此题改算法的正确性。枚举poly1 中的边 i，和poly2中的边 j，使得i和j重合，调整一个poly中的点的坐标， 然后对两个poly的顶点求凸包，再求凸包的面积，如果面积和原来两个poly的面积相同的话 就说明可以。枚举完所有的边都没找到则认为答案是0. Followed by:
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