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