


def 						lowercase_(    SCREAMING_SNAKE_CASE_      ):


  '''simple docstring'''

  lowerCamelCase					:   Tuple       =							[int(_UpperCamelCase      ) for i in ip_va_address.split("."      ) if i.isdigit()]
  return len(_UpperCamelCase      ) == 4 and all(0 <= int(_UpperCamelCase      ) <= 254 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.''')









'''simple docstring'''





from math import ceil





def       __a      (  _UpperCamelCase:       int = 1_001       )		->					int:

     """simple docstring"""




     _snake_case				= 1

     for i in range(1   ,		int(ceil(n / 2.0       )       )       ):
          _snake_case				= 2 * i + 1
          _snake_case				= 2 * i
          _snake_case				= total + 4 * odd**2 - 6 * even

     return total


if __name__ == "__main__":
   import sys

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


