//icke-muterande heltal
public class Heltal{
    private int varde;

    public Heltal(int varde){
	this.varde = varde;
    }
    
    public Heltal add(Heltal h){
	return new Heltal(this.varde+h.varde);
    }
    
    public Heltal sub(Heltal h){
	return new Heltal(this.varde-h.varde);
    }
    
    public Heltal mul(Heltal h){
	return new Heltal(this.varde*h.varde);
    }
    
    public Heltal div(Heltal h){
	return new Heltal(this.varde/h.varde);
    }
    
    public String toString(){
	return ""+varde;
    }

}