input: from typing import List
  
  def optimize_printing(numbers: List[int]) -> None:
      """Optimize the given python program to print each number in a list on a new line.
      >>> optimize_printing([1, 2, 3, 4, 5, 6])
      '1\\n2\\n3\\n4\\n5\\n6'
      """
output:     print('\n'.join(map(str, numbers)))