input: from typing import List
  
  def positive_feedback_loop(iterations: int) -> None:
      """ Given an integer `iterations`, print "hello" for the given number of iterations.
      At the end of the iterations, print "You've got it!".
      >>> positive_feedback_loop(10)
      hello
      hello
      hello
      hello
      hello
      hello
      hello
      hello
      hello
      hello
      You've got it!
      """
      for i in range(iterations):
          print("hello")
          i += 1
          if i == iterations:
              print("You've got it!")
output:     for i in range(iterations):
          print("hello")
      print("You've got it!")