





from math import loga


def 					A__	(       SCREAMING_SNAKE_CASE_		)   ->     int:
		if a < 0:
				raise ValueError('''Input value must be a positive integer'''		)
		elif isinstance(SCREAMING_SNAKE_CASE_							,       SCREAMING_SNAKE_CASE_		):
				raise TypeError('''Input value must be a \'int\' type'''		)
		return 0 if (a == 0) else int(loga(a & -a		)		)


if __name__ == "__main__":
				import doctest

				doctest.testmod()








def 					A__	(       SCREAMING_SNAKE_CASE_		)   ->     bool:
		lowerCamelCase   : Optional[Any]								=[int(SCREAMING_SNAKE_CASE_		) for i in ip_va_address.split('''.'''		) if i.isdigit()]
		return len(SCREAMING_SNAKE_CASE_		) == 4 and all(0 <= int(SCREAMING_SNAKE_CASE_		) <= 2_5_4 for octet in octets		)


if __name__ == "__main__":
				snake_case_							=			input().strip()
				snake_case_							=			'''valid''' if is_ip_va_address_valid(ip) else '''invalid'''
				print(F"""{ip} is a {valid_or_invalid} IP v4 address.""")

