



from math import ceil






def        A       (      _lowerCamelCase = 1_001						):





							'''simple docstring'''




							_lowerCAmelCase  :							Optional[Any]				     =					1

							for i in range(1       ,				int(ceil(n / 2.0						)						)						):
														_lowerCAmelCase  :							Dict				     =					2 * i + 1
														_lowerCAmelCase  :							Optional[int]				     =					2 * i
														_lowerCAmelCase  :							List[Any]				     =					total + 4 * odd**2 - 6 * even

							return total


if __name__ == "__main__":
	import sys

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





import string






def        A       (      _lowerCamelCase						):





							'''simple docstring'''




							for key in range(len(string.ascii_uppercase						)						):
														_lowerCAmelCase  :							str				     =					""
														for symbol in message:
																					if symbol in string.ascii_uppercase:
																												_lowerCAmelCase  :							List[str]				     =					string.ascii_uppercase.find(_lowerCamelCase						)
																												_lowerCAmelCase  :							Dict				     =					num - key
																												if num < 0:
																																			_lowerCAmelCase  :							Dict				     =					num + len(string.ascii_uppercase						)
																												_lowerCAmelCase  :							Optional[Any]				     =					translated + string.ascii_uppercase[num]
																					else:
																												_lowerCAmelCase  :							int				     =					translated + symbol
														print(F"Decryption using Key #{key}: {translated}"						)






def        A       (      ):





							'''simple docstring'''




							_lowerCAmelCase  :							Tuple				     =					input("Encrypted message: "						)
							_lowerCAmelCase  :							Dict				     =					message.upper()
							decrypt(_lowerCamelCase						)


if __name__ == "__main__":
						import doctest

						doctest.testmod()
						main()
