
def   lowerCamelCase__							(					a		,		a      )      ->   bool:
   return numa ^ numa < 0


if __name__ == "__main__":
   import doctest

   doctest.testmod()





def   lowerCamelCase__							(					a      )      ->   bool:
   _A:  Dict					=       [int(a      ) for i in ip_va_address.split('''.'''      ) if i.isdigit()]
   return len(a      ) == 4 and all(0 <= int(a      ) <= 2_54 for octet in octets      )


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



