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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 bezout(a, b):
 """Bezout coefficients for a and b :param a,b: non-negative integers :complexity: O(log a + log b) """

    if b == 0:
        return (1, 0)
    else:
        u, v = bezout(b, a % b)
        return (v, u - (a // b) * v)