cd

class A{
    private int x,y;
	A(int x,int y){
		this.x=x;
		this.y=y;
	}
	public int getX(){
		return x;
	}
	public int getY(){
		return y;
	}
}
class B extends A{
	private int z;
	B(int x,int y,int z){
		super(x,y);
		this.z=z;
	}
	public int getZ(){
		return z;
	}
}
class sample<T>{
	private T[] values;
	public sample(T[] values){
		this.values=values;
	}
	public static <T> void show(sample<? extends A> other){
		for(int i=0;i<other.values.length;i++){
			
			System.out.println(other.values[i].getX()+" "+other.values[i].getY()+" ");
		}
	}
	public static <T> void show2(sample<? extends B> other){
		for(int i=0;i<other.values.length;i++){
			
			System.out.println(other.values[i].getX()+" "+other.values[i].getY()+" "+other.values[i].getZ());
}
	}
}
public class wildcard{
	public static void main(String [] args){
		A[] ar={new A(1,2),new A(2,3),new A(3,4)};
		sample<A> a1=new sample<A>(ar);
a1.show(a1);
       B[] br={new B(1,2,5),new B(2,3,7),new B(3,4,8)};
		sample<B> b1=new sample<B>(br);
b1.show(b1);
	}
}