




"""simple docstring"""







def 						snake_case__       (					_lowerCamelCase				)			->str:






		"""simple docstring"""


		__lowercase				:		Union[str, Any]												=				""
		for ch in key:
				if ch == " " or ch not in key_no_dups and ch.isalpha():
						key_no_dups += ch
		return key_no_dups

def 						snake_case__       (					_lowerCamelCase				)			->dict[str, str]:






		"""simple docstring"""


		__lowercase				:		Optional[int]												=				[chr(i + 65				) for i in range(26				)]
		# Remove duplicate characters from key
		__lowercase				:		Any												=				remove_duplicates(key.upper()				)
		__lowercase				:		Any												=				len(_lowerCamelCase				)
		# First fill cipher with key characters
		__lowercase				:		str												=				{alphabet[i]: char for i, char in enumerate(_lowerCamelCase				)}
		# Then map remaining characters in alphabet to
		# the alphabet from the beginning
		for i in range(len(_lowerCamelCase				),  26				):
				__lowercase				:		Optional[int]												=				alphabet[i - offset]
				# Ensure we are not mapping letters to letters previously mapped
				while char in key:
						offset -= 1
						__lowercase				:		Optional[Any]												=				alphabet[i - offset]
				__lowercase				:		List[Any]												=				char
		return cipher_alphabet

def 						snake_case__       (					_lowerCamelCase,  _lowerCamelCase				)			->str:






		"""simple docstring"""


		return "".join(cipher_map.get(_lowerCamelCase,  _lowerCamelCase				) for ch in message.upper()				)

def 						snake_case__       (					_lowerCamelCase,  _lowerCamelCase				)			->str:






		"""simple docstring"""


		__lowercase				:		Optional[Any]												=				{v: k for k, v in cipher_map.items()}
		return "".join(rev_cipher_map.get(_lowerCamelCase,  _lowerCamelCase				) for ch in message.upper()				)

def 						snake_case__       (					)			->None:






		"""simple docstring"""


		__lowercase				:		List[str]												=				input("Enter message to encode or decode: "				).strip()
		__lowercase				:		Any												=				input("Enter keyword: "				).strip()
		__lowercase				:		Any												=				input("Encipher or decipher? E/D:"				).strip()[0].lower()
		try:
				__lowercase				:		Optional[int]												=				{"e": encipher, "d": decipher}[option]
		except KeyError:
				raise KeyError("invalid input option"				)
		__lowercase				:		str												=				create_cipher_map(_lowerCamelCase				)
		print(func(_lowerCamelCase,  _lowerCamelCase				)				)


if __name__ == "__main__":
						import doctest

						doctest.testmod()
						main()






"""simple docstring"""







def 						snake_case__       (					_lowerCamelCase				)			->list:






		"""simple docstring"""


		__lowercase				:		Optional[int]												=				[0] * len(_lowerCamelCase				)

		for i in range(1,  len(_lowerCamelCase				)				):
				# use last results for better performance - dynamic programming
				__lowercase				:		Optional[Any]												=				prefix_result[i - 1]
				while j > 0 and input_string[i] != input_string[j]:
						__lowercase				:		List[str]												=				prefix_result[j - 1]

				if input_string[i] == input_string[j]:
						j += 1
				__lowercase				:		Any												=				j

		return prefix_result

def 						snake_case__       (					_lowerCamelCase				)			->int:






		"""simple docstring"""


		return max(prefix_function(_lowerCamelCase				)				)


if __name__ == "__main__":
						import doctest

						doctest.testmod()
