public class Ratio {

    protected int numerator; 
    protected int denominator; 

    public Ratio(int top, int bottom) {
        numerator = top;
        denominator = bottom;
        reduce();
    }

    public int getNumerator() {
        return numerator;
    }

    public int getDenominator() {
        return denominator;
    }

    public double getValue() {
        return (double)numerator/(double)denominator;
    }

    public Ratio add(Ratio other) {
        return new Ratio(this.numerator*other.denominator+
                         this.denominator*other.numerator,
                         this.denominator*other.denominator);
    }

   
    protected void reduce() {
        int divisor = gcd(numerator,denominator);
        numerator /= divisor;
        denominator /= divisor;
    }

    protected static int gcd(int a, int b) {
        if (a == 0) {
            if (b == 0) return 1;
            else return b;
        }
        if (b < a) return gcd(b,a);
        return gcd(b%a,a);
    }

    public String toString() {
        return getNumerator()+"/"+getDenominator();
    }

    public static void main(String[] args){
        Ratio r = new Ratio(1,1);
	r = new Ratio (1,2);
        r.add(new Ratio(1,3));
	r = r.add(new Ratio(2,8));
	System.out.println(r.getValue());
	System.out.println(r.toString());
	System.out.println(r);
    }
}