



def       UpperCAmelCase__	(							__snake_case = 100							)				->	int:
  _A          =      [[0 for _ in range(__snake_case							)] for _ in range(m + 1							)]
  for i in range(m + 1							):
    _A          =      1

  for n in range(m + 1							):
    for k in range(1  ,			__snake_case							):
      memo[n][k] += memo[n][k - 1]
      if n > k:
        memo[n][k] += memo[n - k - 1][k]

  return memo[m][m - 1] - 1


if __name__ == "__main__":
    print(solution(int(input("""Enter a number: """).strip())))




import importlib.metadata
import subprocess
import sys




def       UpperCAmelCase__	(							__snake_case = False							)				->	List[Any]:
  _A          =      False
  if "IPython" in sys.modules:
    _A          =      '''google.colab''' in str(sys.modules['''IPython'''].get_ipython()							)

  if in_colab:
    if upgrade:
      _A          =      ['''pip''', '''install''', '''-U''', '''torch''']
      subprocess.run(__snake_case  ,			check=__snake_case							)
    # get the current version of torch
    _A          =      importlib.metadata.version('''torch'''							)
    _A          =      torch_version[: torch_version.rindex('''.'''							)]
    _A          =      F'''https://storage.googleapis.com/tpu-pytorch/wheels/colab/torch_xla-{torch_version_trunc}-cp37-cp37m-linux_x86_64.whl'''
    _A          =      ['''pip''', '''install''', xla_wheel]
    subprocess.run(__snake_case  ,			check=__snake_case							)
  else:
    raise RuntimeError('''`install_xla` utility works only on google colab.'''							)