java
public class A{
    private int x=0;
    public A(){ this(x); x++; System.out.print(x);}
    public A(int x){ this.x+=x;}
    public A(int x,int y){ this.x+=y+x;}
}
public class B extends A{
    private int x=17;
    public B(){ this(2,2); 
        System.out.print(x); }
    public B(int x,int y){ super(x,y); }
}
public class programs5{
    public static void main(){
        A obj=new B();
    }
}