
'''simple docstring'''





def 	snake_case_							(				_a  :				int = 4_000_000      ):

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


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






"""simple docstring"""







def 	lowerCAmelCase__      (  lowerCamelCase__      )			->				List[str]:
							A    =       [701, 301, 132, 57, 23, 10, 4, 1]
							for gap in gaps:
														for i in range(lowerCamelCase__					,   len(lowerCamelCase__      )      ):
																					A    =       collection[i]
																					A    =       i
																					while j >= gap and collection[j - gap] > insert_value:
																												A    =       collection[j - gap]
																												j -= gap
																					if j != i:
																												A    =       insert_value
							return collection


if __name__ == "__main__":
							from doctest import testmod

							testmod()
							A     =      input('Enter numbers separated by a comma:\n').strip()
							A     =      [int(item) for item in user_input.split(',')]
							print(shell_sort(unsorted))



