input: 
  def optimize_printing_list_elements(numbers: List[int]) -> None:
      """
      Optimize the given Python program to print each element of a list on a new line.
      >>> numbers = [1, 2, 3, 4, 5, 6]
      >>> optimize_printing_list_elements(numbers)
      1
      2
      3
      4
      5
      6
      """
      print(*numbers, sep='\n')
  
output:     for num in numbers:
          print(num)