




'''simple docstring'''
def  lowerCamelCase(       SCREAMING_SNAKE_CASE_ = 400_0000    )		->		int:
   A_       		=   1
   A_       		=   2
   A_       		=   0
   while j <= n:
      if j % 2 == 0:
         total += j
      A_		,   A_       		=   j, i + j

   return total


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










'''simple docstring'''
def  lowerCamelCase(       SCREAMING_SNAKE_CASE_    )		->		int:

			if not isinstance(SCREAMING_SNAKE_CASE_					,SCREAMING_SNAKE_CASE_    ) or number < 0:
						raise ValueError('Input must be a non-negative integer'    )

			A_       		=   number & ~(number - 1)
			A_       		=   0
			while intermediate:
						intermediate >>= 1
						index += 1
			return index - 1


if __name__ == "__main__":
							import doctest

							doctest.testmod(verbose=True)




