






from __future__ import annotations

import sys
def       a__						(  A					):
   if n < 0:
      raise ValueError("""Negative arguments are not supported"""					)
   return _fib(A					)[0]
def       a__						(  A					):
   if n == 0:  # (F(0), F(1))
      return (0, 1)

   # F(2n) = F(n)[2F(n+1) − F(n)]
   # F(2n+1) = F(n+1)^2+F(n)^2
   lowercase__     ,					lowercase__						:	Union[str, Any]         = _fib(n // 2					)
   lowercase__						:	List[str]         = a * (b * 2 - a)
   lowercase__						:	int         = a * a + b * b
   return (d, c + d) if n % 2 else (c, d)


if __name__ == "__main__":
 a    =       int(sys.argv[1])
 print(F'fibonacci({n}) is {fibonacci(n)}')










import os
import sys
import time

from . import transposition_cipher as trans_cipher
def       a__						(  ):
   lowercase__						:	Union[str, Any]         = """Prehistoric Men.txt"""
   lowercase__						:	Optional[Any]         = """Output.txt"""
   lowercase__						:	List[str]         = int(input("""Enter key: """					)					)
   lowercase__						:	Tuple         = input("""Encrypt/Decrypt [e/d]: """					)

   if not os.path.exists(A					):
      print(F'''File {input_file} does not exist. Quitting...'''					)
      sys.exit()
   if os.path.exists(A					):
      print(F'''Overwrite {output_file}? [y/n]'''					)
      lowercase__						:	List[Any]         = input("""> """					)
      if not response.lower().startswith("""y"""					):
         sys.exit()

   lowercase__						:	str         = time.time()
   if mode.lower().startswith("""e"""					):
      with open(A					) as f:
         lowercase__						:	Optional[int]         = f.read()
      lowercase__						:	List[str]         = trans_cipher.encrypt_message(A		,				A					)
   elif mode.lower().startswith("""d"""					):
      with open(A					) as f:
         lowercase__						:	int         = f.read()
      lowercase__						:	int         = trans_cipher.decrypt_message(A		,				A					)

   with open(A		,				"""w"""					) as output_obj:
      output_obj.write(A					)

   lowercase__						:	Optional[Any]         = round(time.time() - start_time		,				2					)
   print(("""Done (""", total_time, """seconds )""")					)


if __name__ == "__main__":
 main()


