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