public class Tocka3D extends Tocka2D{
	protected double z;
	
	public Tocka3D(double x, double y, double z){
		super(x,y);
		this.z = z;
	}
	
	public double vrniMin() {
		return Math.min(super.vrniMin(), z);
	}
	
	public static void main(String []args) {
		Tocka2D t1 = new Tocka2D(-3.4, 2.5);
		Tocka2D t2 = new Tocka3D (2.1, 1.3, -2);
		System.out.println(t1.vrniMin());
		System.out.println(t2.vrniMin());
	}
}