





def        SCREAMING_SNAKE_CASE      (       _UpperCAmelCase						,	_UpperCAmelCase						,	_UpperCAmelCase=False )			->     Union[str, Any]:

    if isinstance(_UpperCAmelCase						,	_UpperCAmelCase ) and isinstance(_UpperCAmelCase						,	_UpperCAmelCase ):
        lowerCamelCase__    :      Tuple					 =		len(set_a.intersection(_UpperCAmelCase ) )

        if alternative_union:
            lowerCamelCase__    :      Union[str, Any]					 =		len(_UpperCAmelCase ) + len(_UpperCAmelCase )
        else:
            lowerCamelCase__    :      Any					 =		len(set_a.union(_UpperCAmelCase ) )

        return intersection / union

    if isinstance(_UpperCAmelCase						,	(list, tuple) ) and isinstance(_UpperCAmelCase						,	(list, tuple) ):
        lowerCamelCase__    :      int					 =		[element for element in set_a if element in set_b]

        if alternative_union:
            lowerCamelCase__    :      int					 =		len(_UpperCAmelCase ) + len(_UpperCAmelCase )
            return len(_UpperCAmelCase ) / union
        else:
            lowerCamelCase__    :      Dict					 =		set_a + [element for element in set_b if element not in set_a]
            return len(_UpperCAmelCase ) / len(_UpperCAmelCase )

        return len(_UpperCAmelCase ) / len(_UpperCAmelCase )
    return None


if __name__ == "__main__":
    _UpperCAmelCase				:       Optional[Any]	   =				{"""a""", """b""", """c""", """d""", """e"""}
    _UpperCAmelCase				:       Tuple	   =				{"""c""", """d""", """e""", """f""", """h""", """i"""}
    print(jaccard_similarity(set_a, set_b))








from math import factorial

def 						UpperCamelCase					(lowercase_: int = 20					)     ->      int:
	A__							:    Union[str, Any]        =		2 * n  # middle entry of odd rows starting at row 3 is the solution for n = 1,
	# 2, 3,...
	A__							:    Tuple        =		n // 2

	return int(factorial(lowercase_					) / (factorial(lowercase_					) * factorial(n - k					))					)


if __name__ == "__main__":
	import sys

	if len(sys.argv) == 1:
		print(solution(20))
	else:
		try:
			A_       : List[str]         =			int(sys.argv[1])
			print(solution(n))
		except ValueError:
			print('Invalid entry - please enter a number.')



