






def 					UpperCamelCase		( _A				):






						"""simple docstring"""







						__magic_name__    :     List[Any]     		=      9

						while num > 0:
												if num % 10 != digit:
																		return False
												num //= 100
												digit -= 1

						return True

def 					UpperCamelCase		( ):






						"""simple docstring"""







						__magic_name__    :     Optional[Any]     		=      138902663

						while not is_square_form(num * num				):
												if num % 10 == 3:
																		num -= 6  # (3 - 6) % 10 = 7
												else:
																		num -= 4  # (7 - 4) % 10 = 3

						return num * 10


if __name__ == "__main__":
		print(F"""{solution() = }""")








from typing import Literal

__magic_name__:  List[Any]  	=			"ABCDEFGHIJKLMNOPQRSTUVWXYZ"

def 					UpperCamelCase		( _A,					_A,					_A				):






						"""simple docstring"""







						__magic_name__    :     int     		=      LETTERS if mode == """decrypt""" else key
						__magic_name__    :     Optional[Any]     		=      key if mode == """decrypt""" else LETTERS
						__magic_name__    :     Optional[Any]     		=      """"""
						# loop through each symbol in the message
						for symbol in message:
												if symbol.upper() in chars_a:
																		# encrypt/decrypt the symbol
																		__magic_name__    :     Optional[Any]     		=      chars_a.find(symbol.upper()				)
																		if symbol.isupper():
																								translated += chars_b[sym_index].upper()
																		else:
																								translated += chars_b[sym_index].lower()
												else:
																		# symbol is not in LETTERS, just add it
																		translated += symbol
						return translated

def 					UpperCamelCase		( _A,					_A				):






						"""simple docstring"""







						return translate_message(_A,					_A,					"""encrypt"""				)

def 					UpperCamelCase		( _A,					_A				):






						"""simple docstring"""







						return translate_message(_A,					_A,					"""decrypt"""				)

def 					UpperCamelCase		( ):






						"""simple docstring"""







						__magic_name__    :     Optional[Any]     		=      """Hello World"""
						__magic_name__    :     str     		=      """QWERTYUIOPASDFGHJKLZXCVBNM"""
						__magic_name__    :     List[str]     		=      """decrypt"""  # set to 'encrypt' or 'decrypt'

						if mode == "encrypt":
												__magic_name__    :     Dict     		=      encrypt_message(_A,					_A				)
						elif mode == "decrypt":
												__magic_name__    :     Any     		=      decrypt_message(_A,					_A				)
						print(f'Using the key {key}, the {mode}ed message is: {translated}'				)


if __name__ == "__main__":
		import doctest

		doctest.testmod()
		main()
