


from math import factorial

def 						_UpperCAmelCase    (      SCREAMING_SNAKE_CASE__      : int = 20    ):
     __UpperCamelCase   							=2 * n  # middle entry of odd rows starting at row 3 is the solution for n = 1,
     # 2, 3,...
     __UpperCamelCase   							=n // 2

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


if __name__ == "__main__":
   import sys

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









from ....utils import logging


_A			=						logging.get_logger(__name__)






class    UpperCAmelCase__	( A_		):



    """simple docstring"""






    def __init__(      self ,       A_ ,       A_=None ,       A_=2048   )  ->	Any:
         __UpperCamelCase   							=config.__dict__
         __UpperCamelCase   							=modal_hidden_size
         if num_labels:
              __UpperCamelCase   							=num_labels





