public class Game{
  private static int pingpangpong = 0;
  private static int turnChanger = 1;
  public static int getTurn(){
    return pingpangpong;
  }

  public static void invTurn(){
    pingpangpong += turnChanger;
    turnChanger *= (pingpangpong == 2 || pingpangpong == 0 ? -1 : 1);
  }

  public static void main(String[] args){
    Worker ping, pang, pong;

    ping = new Worker(0, "PING\n");
    pang = new Worker(1, "PANG\n");
    pong = new Worker(2, "PONG\n");
  }
}