class Energidrikk extends Vare implements Pant{
  private final int PANT;
  Energidrikk(int p, String n, int pant) {
    super(p, n);
    PANT = pant;
  }

  @Override
  public int kjop() {
    return prisMedPant();
  }

  @Override
  public String toString() {
    return "Varen " + navn + " koster " + (pris+PANT);
  }

  @Override
  public int pantIPanteMaskin() {
    return PANT;
  }

  @Override
  public int prisMedPant() {
    return super.kjop() + PANT;
  }
}