public class CalculateBottle {
    static int money = 40;
    public static void main(String[] args) {
        CalculateBottle calculateBottle = new CalculateBottle();
         // 10/2: 10只拥有的金额, 2是指汽水两块钱一瓶  这里的金额可以动态改变
        int calculateBottle1 = calculateBottle.calculateBottle(10/2, 0, 0);
        System.out.println(calculateBottle1);
    }

    /**
     * 传入金额 计算可以换购的总汽水的数量
     * 一瓶汽水2元  3个瓶盖换一瓶汽水  2个瓶身换一瓶汽水
     * 问用40,60,80元分别最多可以换购多少汽水
     * @param total
     * @return
     */
    public int calculateBottle(int total,int cap,int bottle){
        int captotal = 0,bottletotal = 0;
        if(total==0&&cap<3&&bottle<2){
            return total;
        }
        if (cap>2){
          captotal=cap/3;
          cap = cap%3;
        }
        if (bottle>1){
            bottletotal=bottle/2;
            bottle =bottle%2;
        }
        return  total + calculateBottle(captotal + bottletotal, cap+total, bottle+total);
    }
}