public class gas
{
    public static void main(String[] args)
    {
	gasstation g1;
	g1 = new gasstation(1.79,1.99,1000,300);
        g1.sellregular(10);
        g1.sellsuper(12);
        g1.gouge(0.10);
        g1.sellregular(14);
	System.out.println("totalsales is " + g1.getsales());
    } // main
} // gas

class gasstation
{
    private double regprice, supprice;
    private double regsupply, supsupply;
    private double totalsales;

    // constructor
    public gasstation(double rp, double sp, double rs, double ss)
    {
	regprice = rp;  supprice = sp;
        regsupply = rs; supsupply = ss;
        totalsales = 0;
    }
  
    // accessor functions
    public double getregsupply() { return regsupply; }
    public double getsupsupply() { return supsupply; }

    public double getsales() 
     {
	 double answer;
         answer = totalsales * 100;
	 answer = ((int) (answer + 0.5))/100.0;
         return answer;
     }

    public void sellregular(double gallons)
    {
	if (regsupply >= gallons)
	    {
		regsupply -= gallons;
                // regsupply = regsupply - gallons;
		totalsales += regprice * gallons;
	    }
	else
	    {
		System.out.println("Sold out");
	    }
    }

    public void sellsuper(double x)
    {
	if (supsupply >= x)
	    {
		supsupply -= x;
		totalsales += supprice * x;
	    }
	else
	    {
		System.out.println("Sold out");
	    }
    }

    public void resupply(double r, double s)
    {
        regsupply += r;
	supsupply += s;
    }

    public void gouge(double percent) // e.g. 0.05 means 5%
    {
	regprice = regprice + (regprice * percent);
	supprice = supprice + (supprice * percent);
    }
} // end of class gasstation