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Solve the following problem using Python, implementing the functions described below, one line at a time
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Description:
 def squared_distance(v1, v2):
 """ Squared distance between two vectors. a and b can be of type SparseVector, DenseVector, np.ndarray or array.array. 51.0 """

        v1, v2 = _convert_to_vector(v1), _convert_to_vector(v2)
        return v1.squared_distance(v2)