


def    _UpperCAmelCase	(   __lowerCamelCase       )		->int:


 '''simple docstring'''
 if not isinstance(__lowerCamelCase ,     __lowerCamelCase       ):
  raise ValueError('''double_factorial() only accepts integral values'''       )
 if n < 0:
  raise ValueError('''double_factorial() not defined for negative values'''       )
 return 1 if n <= 1 else n * double_factorial(n - 2       )


if __name__ == "__main__":
  import doctest

  doctest.testmod()





from itertools import permutations






def    _UpperCAmelCase	(   )		->str:


 '''simple docstring'''
 snake_case   : Any	  =      list(map(''''''.join ,     permutations('''0123456789'''       )       )       )
 return result[999999]


if __name__ == "__main__":
  print(solution())






