text: # std
  from threading import Thread
  
  
  class CounterThread(Thread):
  
      COUNTER = 0
  
      def run(self):
          for idx in range(10000):
              CounterThread.COUNTER += 1
              CounterThread.COUNTER -= 1
  
          CounterThread.COUNTER += 1
  
  
  if __name__ == '__main__':
  
      for i in range(10000):
          CounterThread().start()
  
      print(CounterThread.COUNTER)
  