def double_input(val):
    """
    Doubles the input and returns
    :param val: (num) value to be doubled
    :return: (num) doubled value
    """
    val = 2 * val
    return val


def triple_input(val):
    """
    Triples the input and returns
    :param val: (num) value to be tripled
    :return: (num) tripled value
    """
    return val * 3


val = 10
print(double_input(val))
print(triple_input(val))