"""simple docstring"""







def 						_lowercase				(  _SCREAMING_SNAKE_CASE				:				Union[str, Any]  ,       _SCREAMING_SNAKE_CASE				:				Dict						)    ->     str:







     '''simple docstring'''


     if not isinstance(_lowercase  ,       _lowercase						):
          raise TypeError('plaintext must be a string'						)
     if not isinstance(_lowercase  ,       _lowercase						):
          raise TypeError('key must be a string'						)

     if not plaintext:
          raise ValueError('plaintext is empty'						)
     if not key:
          raise ValueError('key is empty'						)

     key += plaintext
     __A					:					int								=		plaintext.lower()
     __A					:					Tuple								=		key.lower()
     __A					:					int								=		0
     __A					:					Any								=		0
     __A					:					List[str]								=		''''''
     while plaintext_iterator < len(_lowercase						):
          if (
              ord(plaintext[plaintext_iterator]						) < 97
              or ord(plaintext[plaintext_iterator]						) > 122
          ):
               ciphertext += plaintext[plaintext_iterator]
               plaintext_iterator += 1
          elif ord(key[key_iterator]						) < 97 or ord(key[key_iterator]						) > 122:
               key_iterator += 1
          else:
               ciphertext += chr(
                   (
                       (ord(plaintext[plaintext_iterator]						) - 97 + ord(key[key_iterator]						))
                       - 97
                   )
                   % 26
                   + 97						)
               key_iterator += 1
               plaintext_iterator += 1
     return ciphertext




def 						_lowercase				(  _SCREAMING_SNAKE_CASE				:				Any  ,       _SCREAMING_SNAKE_CASE				:				Any						)    ->     List[Any]:







     '''simple docstring'''


     if not isinstance(_lowercase  ,       _lowercase						):
          raise TypeError('ciphertext must be a string'						)
     if not isinstance(_lowercase  ,       _lowercase						):
          raise TypeError('key must be a string'						)

     if not ciphertext:
          raise ValueError('ciphertext is empty'						)
     if not key:
          raise ValueError('key is empty'						)

     __A					:					List[Any]								=		key.lower()
     __A					:					Tuple								=		0
     __A					:					str								=		0
     __A					:					Tuple								=		''''''
     while ciphertext_iterator < len(_lowercase						):
          if (
              ord(ciphertext[ciphertext_iterator]						) < 97
              or ord(ciphertext[ciphertext_iterator]						) > 122
          ):
               plaintext += ciphertext[ciphertext_iterator]
          else:
               plaintext += chr(
                   (ord(ciphertext[ciphertext_iterator]						) - ord(key[key_iterator]						)) % 26
                   + 97						)
               key += chr(
                   (ord(ciphertext[ciphertext_iterator]						) - ord(key[key_iterator]						)) % 26
                   + 97						)
               key_iterator += 1
          ciphertext_iterator += 1
     return plaintext


if __name__ == "__main__":
       import doctest

       doctest.testmod()
       lowerCamelCase      : str       =int(input('''Type 1 to encrypt or 2 to decrypt:'''))
       if operation == 1:
              lowerCamelCase      : Any       =input('''Typeplaintext to be encrypted:\n''')
              lowerCamelCase      : List[str]       =input('''Type the key:\n''')
              print(encrypt(plaintext, key))
       elif operation == 2:
              lowerCamelCase      : Optional[int]       =input('''Type the ciphertext to be decrypted:\n''')
              lowerCamelCase      : List[Any]       =input('''Type the key:\n''')
              print(decrypt(ciphertext, key))
       decrypt('''jsqqs avvwo''', '''coffee''')










"""simple docstring"""




def 			a_							(				_lowercase  ):
						_UpperCamelCase     :   List[str]      =       []
						_UpperCamelCase     :   Union[str, Any]      =       1

						for i in range(len(_lowercase  )  ):
												if i + 1 < len(_lowercase  ) and text[i] == text[i + 1]:
																		count += 1
												else:
																		encoded.append((text[i], count)  )
																		_UpperCamelCase     :   int      =       1

						return encoded





def 			a_							(				_lowercase  ):
						return "".join(char * length for char, length in encoded  )


if __name__ == "__main__":
						from doctest import testmod

						testmod(name="""run_length_encode""", verbose=True)
						testmod(name="""run_length_decode""", verbose=True)



