input: from typing import List
  
  def positive_feedback_loop(iterations: int) -> List[str]:
      """
      Design a positive feedback loop for the given number of iterations and print a message when the loop completes.
      
      >>> positive_feedback_loop(10)
      ['hello', 'hello', 'hello', 'hello', 'hello', 'hello', 'hello', 'hello', 'hello', 'hello', 'You've got it!']
      """
output:     result = ["hello"] * iterations
      result.append("You've got it!")
      return result