def  __lowerCamelCase						(		lowerCAmelCase__      ,    lowerCAmelCase__ = 1_3      ):
       lowerCAmelCase__	      =   """"""
       for c in s:
              if "A" <= c <= "Z":
                     out += chr(ord('A'      ) + (ord(_lowercase      ) - ord('A'      ) + n) % 2_6      )
              elif "a" <= c <= "z":
                     out += chr(ord('a'      ) + (ord(_lowercase      ) - ord('a'      ) + n) % 2_6      )
              else:
                     out += c
       return out






def  __lowerCamelCase						(		):
       lowerCAmelCase__	      =   input('Enter message: '      )

       lowerCAmelCase__	      =   dencrypt(_lowercase      ,    1_3      )
       print('Encryption:'      ,    _lowercase      )

       lowerCAmelCase__	      =   dencrypt(_lowercase      ,    1_3      )
       print('Decryption: '      ,    _lowercase      )


if __name__ == "__main__":
    import doctest

    doctest.testmod()
    main()





"""simple docstring"""
def   A_    (     _lowercase,   _lowercase,   _lowercase,   _lowercase      ):







						'''simple docstring'''


						snake_case_					:Dict		=     int((lower_bound + upper_bound) // 2      )
						if array[r] == value:
												return r
						if lower_bound >= upper_bound:
												return -1
						if array[r] < value:
												return binary_search(_lowercase,   r + 1,   _lowercase,   _lowercase      )
						else:
												return binary_search(_lowercase,   _lowercase,   r - 1,   _lowercase      )
def   A_    (     _lowercase,   _lowercase      ):







						'''simple docstring'''


						snake_case_					:Any		=     0
						if matrix[index][0] == value:
												return [index, 0]
						while index < len(_lowercase      ) and matrix[index][0] < value:
												snake_case_					:List[str]		=     binary_search(matrix[index],   0,   len(matrix[index]      ) - 1,   _lowercase      )
												if r != -1:
																		return [index, r]
												index += 1
						return [-1, -1]


if __name__ == "__main__":
						import doctest

						doctest.testmod()
