






from __future__ import annotations
class       _UpperCAmelCase					:

				"""simple docstring"""




				def __init__(     self						:    Union[str, Any],  lowerCamelCase						:    int = 0  ):

								'''simple docstring'''
								lowercase__    =			key




				def 				lowercase__   (     self						:    int,  lowerCamelCase						:    str,  lowerCamelCase						:    int  ):

								'''simple docstring'''
								assert isinstance(lowerCamelCase,  lowerCamelCase  ) and isinstance(lowerCamelCase,  lowerCamelCase  )

								lowercase__    =			key or self.__key or 1

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

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




				def 				lowercase__   (     self						:    List[str],  lowerCamelCase						:    str,  lowerCamelCase						:    int  ):

								'''simple docstring'''
								assert isinstance(lowerCamelCase,  lowerCamelCase  ) and isinstance(lowerCamelCase,  lowerCamelCase  )

								lowercase__    =			key or self.__key or 1

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

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




				def 				lowercase__   (     self						:    Tuple,  lowerCamelCase						:    str,  lowerCamelCase						:    int = 0  ):

								'''simple docstring'''
								assert isinstance(lowerCamelCase,  lowerCamelCase  ) and isinstance(lowerCamelCase,  lowerCamelCase  )

								lowercase__    =			key or self.__key or 1

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

								# This will be returned
								lowercase__    =			""

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

								return ans




				def 				lowercase__   (     self						:    Optional[int],  lowerCamelCase						:    str,  lowerCamelCase						:    int = 0  ):

								'''simple docstring'''
								assert isinstance(lowerCamelCase,  lowerCamelCase  ) and isinstance(lowerCamelCase,  lowerCamelCase  )

								lowercase__    =			key or self.__key or 1

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

								# This will be returned
								lowercase__    =			""

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

								return ans




				def 				lowercase__   (     self						:    List[str],  lowerCamelCase						:    str,  lowerCamelCase						:    int = 0  ):

								'''simple docstring'''
								assert isinstance(lowerCamelCase,  lowerCamelCase  ) and isinstance(lowerCamelCase,  lowerCamelCase  )

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

								except OSError:
												return False

								return True




				def 				lowercase__   (     self						:    List[str],  lowerCamelCase						:    str,  lowerCamelCase						:    int  ):

								'''simple docstring'''
								assert isinstance(lowerCamelCase,  lowerCamelCase  ) and isinstance(lowerCamelCase,  lowerCamelCase  )

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

								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")












from __future__ import annotations

import sys
from collections import deque
from typing import Generic, TypeVar

lowerCamelCase	:							int				=TypeVar('''T''')





class 			__a  (    Generic[T]       ):
 _lowerCAmelCase       :       deque[T]  # Cache store of keys
 _lowerCAmelCase       :       set[T]  # References of the keys in cache
 _lowerCAmelCase       :       int        = 1_0  # Maximum capacity of cache







 def __init__(		self					:   List[str]							,   SCREAMING_SNAKE_CASE					:   int						):


      '''simple docstring'''






      UpperCamelCase__			:   Tuple       				=  deque()
      UpperCamelCase__			:   Optional[int]       				=  set()
      if not n:
           UpperCamelCase__			:   Tuple       				=  sys.maxsize
      elif n < 0:
           raise ValueError("n should be an integer greater than 0."						)
      else:
           UpperCamelCase__			:   Dict       				=  n







 def 					__lowercase					(		self					:   List[Any]							,   SCREAMING_SNAKE_CASE					:   T						):


      '''simple docstring'''






      if x not in self.key_reference:
           if len(self.dq_store						) == LRUCache._MAX_CAPACITY:
                UpperCamelCase__			:   int       				=  self.dq_store.pop()
                self.key_reference.remove(SCREAMING_SNAKE_CASE						)
      else:
           self.dq_store.remove(SCREAMING_SNAKE_CASE						)

      self.dq_store.appendleft(SCREAMING_SNAKE_CASE						)
      self.key_reference.add(SCREAMING_SNAKE_CASE						)







 def 					__lowercase					(		self					:   Dict						):


      '''simple docstring'''






      for k in self.dq_store:
           print(SCREAMING_SNAKE_CASE						)







 def __repr__(		self					:   Union[str, Any]						):


      '''simple docstring'''






      return F'LRUCache({self._MAX_CAPACITY}) => {list(self.dq_store						)}'


if __name__ == "__main__":
 import doctest

 doctest.testmod()

 lowerCamelCase	:							LRUCache[str | int]				=LRUCache(4)
 lru_cache.refer('''A''')
 lru_cache.refer(2)
 lru_cache.refer(3)
 lru_cache.refer('''A''')
 lru_cache.refer(4)
 lru_cache.refer(5)
 lru_cache.display()

 print(lru_cache)
 assert str(lru_cache) == "LRUCache(4) => [5, 4, 'A', 3]"