


def   lowerCamelCase(      a__ = 1000):
				return sum(i for i in range(__UpperCamelCase) if i % 3 == 0 or i % 5 == 0)


if __name__ == "__main__":
							print(f"""{solution() = }""")





def 	UpperCAmelCase_    (	__UpperCamelCase	):
    if not isinstance(__UpperCamelCase,				__UpperCamelCase	):
        raise ValueError("""double_factorial() only accepts integral values"""	)
    if n < 0:
        raise ValueError("""double_factorial() not defined for negative values"""	)
    return 1 if n <= 1 else n * double_factorial(n - 2	)


if __name__ == "__main__":
    import doctest

    doctest.testmod()






