






'''simple docstring'''





from __future__ import annotations

import re
def   lowerCamelCase      (		a_			)			->    Union[str, Any]:

							def alphanum_key(a_			):
														return [int(a_			) if s.isdigit() else s.lower() for s in re.split('([0-9]+)'				,		a_			)]

							return sorted(a_				,		key=a_			)


if __name__ == "__main__":
		import doctest

		doctest.testmod()











def   lowerCamelCase      (		a_ = 4_000_000			)			->    int:

							if n <= 1:
														return 0
							lowerCAmelCase_       		=  0
							lowerCAmelCase_       		=  2
							lowerCAmelCase_       		=  0
							while 4 * b + a <= n:
														lowerCAmelCase_		,     lowerCAmelCase_       		=  b, 4 * b + a
														count += a
							return count + b


if __name__ == "__main__":
		print(f'''{solution() = }''')



