def get_lesser(num_a, num_b):
    """
    Return the lesser of int num_a and int num_b. If the lesser number is less than 0, return 0
    :param num_a: (int)
    :param num_b: (int)
    :return: Return the smaller of num_a or num_b.
    """

    return max(0, min(num_a, num_b))