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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 _u_distance_correlation_sqr_naive(x, y, exponent=1):
 """Bias-corrected distance correlation estimator between two matrices."""

    return _distance_sqr_stats_naive_generic(
        x, y,
        matrix_centered=_u_distance_matrix,
        product=u_product,
        exponent=exponent).correlation_xy