input: from typing import List
  
  def optimize_print_lines(numbers: List[int]) -> str:
      """ Optimize the given program to print each number on a new line.
      The optimized program should use a single print statement with the * operator.
      >>> optimize_print_lines([1, 2, 3, 4, 5, 6])
      'numbers = [1, 2, 3, 4, 5, 6]\n\nprint(*numbers, sep=\\'\\\\n\\')'
      """
output:     numbers_str = ', '.join(map(str, numbers))
      return f'numbers = [{numbers_str}]\n\nprint(*numbers, sep=\'\\n\')'