input: 
  def optimize_print_list(numbers: list) -> str:
      """ Optimizes the printing of elements in a list by using a single print statement 
      with the asterisk operator and sep parameter. 
      >>> optimize_print_list([1, 2, 3, 4, 5, 6])
      '1\\n2\\n3\\n4\\n5\\n6\\n'
      >>> optimize_print_list([10, 20, 30])
      '10\\n20\\n30\\n'
      """
  
output:     return '\n'.join(map(str, numbers)) + '\n'