

"""simple docstring"""




from math import factorial
def   lowerCAmelCase						(					__UpperCamelCase = 20      ):
 '''simple docstring'''





 UpperCAmelCase__					:  int					   =					2 * n  # middle entry of odd rows starting at row 3 is the solution for n = 1,
 # 2, 3,...
 UpperCAmelCase__					:  Dict					   =					n // 2

 return int(factorial(__lowerCAmelCase      ) / (factorial(__lowerCAmelCase      ) * factorial(n - k      ))      )


if __name__ == "__main__":
  import sys

  if len(sys.argv) == 1:
    print(solution(20))
  else:
    try:
      __UpperCAmelCase =				int(sys.argv[1])
      print(solution(n))
    except ValueError:
      print('Invalid entry - please enter a number.')








"""simple docstring"""




__UpperCAmelCase =				'Tobias Carryer'

from time import time







class      __lowercase			:

  def __init__(  self		:			Union[str, Any]					,A		:			Dict					,A		:			Optional[int]					,A		:			Union[str, Any]					,A		:			int=int(time()    )    ):  # noqa: B008






   '''simple docstring'''
   UpperCAmelCase__					:  int					   =					multiplier
   UpperCAmelCase__					:  Union[str, Any]					   =					increment
   UpperCAmelCase__					:  Dict					   =					modulo
   UpperCAmelCase__					:  Tuple					   =					seed




  def    __lowercase       (  self		:			Dict    ):






   '''simple docstring'''
   UpperCAmelCase__					:  Any					   =					(self.multiplier * self.seed + self.increment) % self.modulo
   return self.seed


if __name__ == "__main__":
      # Show the LCG in action.
      __UpperCAmelCase =				LinearCongruentialGenerator(166_4525, 10_1390_4223, 2 << 31)
      while True:
            print(lcg.next_number())





