text: import random
  import string
  
  def genString():
      return "".join(random.choice(string.ascii_uppercase) for _ in range(3))
  
  def main():
      test = genString()
      for _ in range(100000000):
          test += " " + genString()
      print(test.count("IPN"))
  
  if __name__ == "__main__":
      main()