
from __future__ import annotations





class 			_lowerCAmelCase      :




				def __init__(      self       ,       _UpperCamelCase = 0  )       ->   Dict:
							lowerCAmelCase_      			=			key




				def   __a		(      self       ,       _UpperCamelCase       ,       _UpperCamelCase  )       ->   list[str]:
							assert isinstance(_UpperCamelCase       ,       _UpperCamelCase  ) and isinstance(_UpperCamelCase       ,       _UpperCamelCase  )

							lowerCAmelCase_      			=			key or self.__key or 1

							# make sure key is an appropriate size
							key %= 255

							return [chr(ord(_UpperCamelCase  ) ^ key  ) for ch in content]




				def   __a		(      self       ,       _UpperCamelCase       ,       _UpperCamelCase  )       ->   list[str]:
							assert isinstance(_UpperCamelCase       ,       _UpperCamelCase  ) and isinstance(_UpperCamelCase       ,       _UpperCamelCase  )

							lowerCAmelCase_      			=			key or self.__key or 1

							# make sure key is an appropriate size
							key %= 255

							return [chr(ord(_UpperCamelCase  ) ^ key  ) for ch in content]




				def   __a		(      self       ,       _UpperCamelCase       ,       _UpperCamelCase = 0  )       ->   str:
							assert isinstance(_UpperCamelCase       ,       _UpperCamelCase  ) and isinstance(_UpperCamelCase       ,       _UpperCamelCase  )

							lowerCAmelCase_      			=			key or self.__key or 1

							# make sure key can be any size
							while key > 255:
										key -= 255

							# This will be returned
							lowerCAmelCase_      			=			""

							for ch in content:
										ans += chr(ord(_UpperCamelCase  ) ^ key  )

							return ans




				def   __a		(      self       ,       _UpperCamelCase       ,       _UpperCamelCase = 0  )       ->   str:
							assert isinstance(_UpperCamelCase       ,       _UpperCamelCase  ) and isinstance(_UpperCamelCase       ,       _UpperCamelCase  )

							lowerCAmelCase_      			=			key or self.__key or 1

							# make sure key can be any size
							while key > 255:
										key -= 255

							# This will be returned
							lowerCAmelCase_      			=			""

							for ch in content:
										ans += chr(ord(_UpperCamelCase  ) ^ key  )

							return ans




				def   __a		(      self       ,       _UpperCamelCase       ,       _UpperCamelCase = 0  )       ->   bool:
							assert isinstance(_UpperCamelCase       ,       _UpperCamelCase  ) and isinstance(_UpperCamelCase       ,       _UpperCamelCase  )

							try:
										with open(_UpperCamelCase  ) as fin, open("encrypt.out"       ,       "w+"  ) as fout:
													# actual encrypt-process
													for line in fin:
																fout.write(self.encrypt_string(_UpperCamelCase       ,       _UpperCamelCase  )  )

							except OSError:
										return False

							return True




				def   __a		(      self       ,       _UpperCamelCase       ,       _UpperCamelCase  )       ->   bool:
							assert isinstance(_UpperCamelCase       ,       _UpperCamelCase  ) and isinstance(_UpperCamelCase       ,       _UpperCamelCase  )

							try:
										with open(_UpperCamelCase  ) as fin, open("decrypt.out"       ,       "w+"  ) as fout:
													# actual encrypt-process
													for line in fin:
																fout.write(self.decrypt_string(_UpperCamelCase       ,       _UpperCamelCase  )  )

							except OSError:
										return False

							return True


# Tests
# crypt = XORCipher()
# key = 67

# # test encrypt
# print(crypt.encrypt("hallo welt",key))
# # test decrypt
# print(crypt.decrypt(crypt.encrypt("hallo welt",key), key))

# # test encrypt_string
# print(crypt.encrypt_string("hallo welt",key))

# # test decrypt_string
# print(crypt.decrypt_string(crypt.encrypt_string("hallo welt",key),key))

# if (crypt.encrypt_file("test.txt",key)):
#       print("encrypt successful")
# else:
#       print("encrypt unsuccessful")

# if (crypt.decrypt_file("encrypt.out",key)):
#       print("decrypt successful")
# else:
#       print("decrypt unsuccessful")





import functools






def      lowerCamelCase__       (       __lowerCAmelCase						:						str					,							__lowerCAmelCase						:						str       ):




			"""simple docstring"""


			lowerCAmelCase_      			=			len(__lowerCAmelCase       )
			lowerCAmelCase_      			=			len(__lowerCAmelCase       )

			@functools.cache
			def min_distance(__lowerCAmelCase						:						int					,							__lowerCAmelCase						:						int       ) -> int:
						# if first word index is overflow - delete all from the second word
						if indexa >= len_worda:
									return len_worda - indexa
						# if second word index is overflow - delete all from the first word
						if indexa >= len_worda:
									return len_worda - indexa
						lowerCAmelCase_      			=			int(worda[indexa] != worda[indexa]       )  # current letters not identical
						return min(
						    1 + min_distance(indexa + 1					,							__lowerCAmelCase       )					,							1 + min_distance(__lowerCAmelCase					,							indexa + 1       )					,							diff + min_distance(indexa + 1					,							indexa + 1       )					,							)

			return min_distance(0					,							0       )


if __name__ == "__main__":
			import doctest

			doctest.testmod()



