





def 	a_    (							_lowercase = 1000       ):
						return sum(2 * a * ((a - 1) // 2) for a in range(3	,						n + 1       )       )


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










"""simple docstring"""




import warnings

from diffusers import StableDiffusionInpaintPipeline as StableDiffusionInpaintPipeline  # noqa F401


warnings.warn(
    """The `inpainting.py` script is outdated. Please use directly `from diffusers import"""
    """ StableDiffusionInpaintPipeline` instead."""
)



