abstract class Form {
    protected String farge;
    
    public Form(String farge) {
        this.farge = farge;
    }

    public String hentFarge() {
        return farge;
    }
    
    public abstract double areal();

    @Override
    public  String toString() {
        return "Farge: " + farge;
    }
    @Override
    public boolean equals(Object other) {
        // return this.toString().equals(other.toString());
        if (other instanceof Form) {
            return areal() == ((Form) other).areal();
        }
        return false;
    }
}