


from __future__ import annotations



class 				A       :
					'''simple docstring'''






					def __init__(self       :		Union[str, Any] ,   _UpperCAmelCase       :		int = 0						)		->  List[Any]:




							"""simple docstring"""


							lowercase__	     =						key

					def     lowerCamelCase__	(self       :		str ,   _UpperCAmelCase       :		str ,   _UpperCAmelCase       :		int						)		->  list[str]:




							"""simple docstring"""


							assert isinstance(_UpperCAmelCase ,   _UpperCAmelCase						) and isinstance(_UpperCAmelCase ,   _UpperCAmelCase						)

							lowercase__	     =						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     lowerCamelCase__	(self       :		List[Any] ,   _UpperCAmelCase       :		str ,   _UpperCAmelCase       :		int						)		->  list[str]:




							"""simple docstring"""


							assert isinstance(_UpperCAmelCase ,   _UpperCAmelCase						) and isinstance(_UpperCAmelCase ,   _UpperCAmelCase						)

							lowercase__	     =						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     lowerCamelCase__	(self       :		Optional[int] ,   _UpperCAmelCase       :		str ,   _UpperCAmelCase       :		int = 0						)		->  str:




							"""simple docstring"""


							assert isinstance(_UpperCAmelCase ,   _UpperCAmelCase						) and isinstance(_UpperCAmelCase ,   _UpperCAmelCase						)

							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(_UpperCAmelCase						) ^ key						)

							return ans

					def     lowerCamelCase__	(self       :		Optional[int] ,   _UpperCAmelCase       :		str ,   _UpperCAmelCase       :		int = 0						)		->  str:




							"""simple docstring"""


							assert isinstance(_UpperCAmelCase ,   _UpperCAmelCase						) and isinstance(_UpperCAmelCase ,   _UpperCAmelCase						)

							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(_UpperCAmelCase						) ^ key						)

							return ans

					def     lowerCamelCase__	(self       :		List[str] ,   _UpperCAmelCase       :		str ,   _UpperCAmelCase       :		int = 0						)		->  bool:




							"""simple docstring"""


							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     lowerCamelCase__	(self       :		Dict ,   _UpperCAmelCase       :		str ,   _UpperCAmelCase       :		int						)		->  bool:




							"""simple docstring"""


							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")


"""simple docstring"""



import math
from collections.abc import Iterator
from itertools import takewhile

def  _A(		lowerCAmelCase							):

							if 1 < number < 4:
														# 2 and 3 are primes
														return True
							elif number < 2 or number % 2 == 0 or number % 3 == 0:
														# Negatives, 0, 1, all even numbers, all multiples of 3 are not primes
														return False

							# All primes number are in format of 6k +/- 1
							for i in range(5			,  int(math.sqrt(lowerCAmelCase							) + 1							)			,  6							):
														if number % i == 0 or number % (i + 2) == 0:
																					return False
							return True

def  _A(		):
							A__       :     List[str]								=			2
							while True:
														if is_prime(lowerCAmelCase							):
																					yield num
														num += 1

def  _A(		lowerCAmelCase = 200_0000							):
							return sum(takewhile(lambda lowerCAmelCase							: x < n			,  prime_generator()							)							)


if __name__ == "__main__":
				print(F'{solution() = }')





