from abc import ABC, abstractmethod
from argparse import ArgumentParser

class 				a  (	UpperCAmelCase				):


						@staticmethod
						@abstractmethod
						def        _UpperCAmelCase				(       A_	):







										'''simple docstring'''


										raise NotImplementedError()





						@abstractmethod
						def        _UpperCAmelCase				(       self	):







										'''simple docstring'''


										raise NotImplementedError()





def 							__SCREAMING_SNAKE_CASE							(				lowerCAmelCase:  str  ,      lowerCAmelCase:  str )   ->       int:
				if len(lowerCAmelCase ) != len(lowerCAmelCase ):
								raise ValueError("String lengths must match!" )

				_UpperCAmelCase       :		List[Any] 		=    0

				for chara, chara in zip(lowerCAmelCase  ,      lowerCAmelCase ):
								if chara != chara:
												count += 1

				return count


if __name__ == "__main__":
					import doctest

					doctest.testmod()


