class PaperCupK extends CupK {
    static final int volume = 150;
    int times;
    PaperCupK(/*PaperCupK this*/) {
        this('!');
    }
    PaperCupK(/*PaperCupK this*/ char c) {
        super(c);
        /*this.*/fill();
    }
    void fill(/*PaperCupK this*/) {
        /*this.*/amount = (int)(ratio * volume);
        /*this.*/times++;
    }
    String status() {
        return "amount=" + amount +
               (drinker=='\0' ? "" : " drinker="+drinker) +
               " times=" + times;
    }
}