!747

m {
  static volatile long beatCount;
  static volatile int delay = 1000;
  static long booted;
  static volatile boolean loud;
  
  p {
    booted = now();
    readLocally("beatCount");
    makeAndroid3("Heart.");
    print("Beating at 1/" + delay + " ms...");
    
    while (true) {
      if (loud)
        print("beep!");
      ++beatCount;
      saveLocally("beatCount");
      sleep(delay);
    }
  }
  
  static synchronized S answer(S s, L<S> history) {
    if (match3("get beat count", s))
      return "" + beatCount;
    if (match3("get delay", s))
      return "" + delay;
    if (match3("booted when", s))
      return "" + booted;
      
    return null;
  }
}