input: from typing import List
  
  def positive_feedback_loop(n: int) -> None:
      """Design a positive feedback loop for the given number of iterations.
      For each iteration, print "hello". At the final iteration, print "You've got it!"
      
      >>> positive_feedback_loop(10)
      hello
      hello
      hello
      hello
      hello
      hello
      hello
      hello
      hello
      hello
      You've got it!
      """
output:     for i in range(n):
          print("hello")
      print("You've got it!")