





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







def    A				(							UpperCAmelCase  ,  UpperCAmelCase				):
					return "".join(cipher_map.get(UpperCAmelCase  ,  UpperCAmelCase				) for ch in message.upper()				)







def    A				(							UpperCAmelCase  ,  UpperCAmelCase				):
					_snake_case       :					str				       =   {v: k for k, v in cipher_map.items()}
					return "".join(rev_cipher_map.get(UpperCAmelCase  ,  UpperCAmelCase				) for ch in message.upper()				)







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


if __name__ == "__main__":
							import doctest

							doctest.testmod()
							main()






def    A				(							UpperCAmelCase				):
					return str(UpperCAmelCase				) == str(UpperCAmelCase				)[::-1]







def    A				(							UpperCAmelCase				):
					return int(UpperCAmelCase				) + int(str(UpperCAmelCase				)[::-1]				)







def    A				(							UpperCAmelCase = 10_000				):
					_snake_case       :					Optional[int]				       =   []
					for num in range(1  ,  UpperCAmelCase				):
										_snake_case       :					Optional[Any]				       =   0
										_snake_case       :					Optional[int]				       =   num
										while iterations < 50:
															_snake_case       :					Optional[Any]				       =   sum_reverse(UpperCAmelCase				)
															iterations += 1
															if is_palindrome(UpperCAmelCase				):
																				break
										else:
															lychrel_nums.append(UpperCAmelCase				)
					return len(UpperCAmelCase				)


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