class A {
    int x;
    A(int x) {this.x=x;}
}
 
class B extends A {
    B(int x) {super(x);}
}
	
public class inherit2 {
    public static void main(String[] args) {
	B b = new B(2);
	System.out.println(b.x);
    }
}

// output: 2