class Wektor3D{
    public int x0;
    public int y0;
    public int z0;

    public int x1;
    public int y1;
    public int z1;

    Wektor3D(){
        this.x0 = 0;
        this.y0 = 0;
        this.z0 = 0;

        this.x1 = 1;
        this.y1 = 1;
        this.z1 = 1;
    }


    public void dodaj(int x0, int y0, int z0, int x1, int y1, int z1){
        this.x0 = x0;
        this.y0 = y0;
        this.z0 = z0;

        this.x0 = x1;
        this.y0 = y1;
        this.z0 = z1;
    }

    public void dodaj(){
        this.x0 = 1;
        this.y0 = 2;
        this.z0 = 3;

        this.x0 = 4;
        this.y0 = 5;
        this.z0 = 6;
    }
}

class Wektor2D extends Wektor3D{
    public void dodaj(int x0, int y0, int x1, int y1){
        super.x0 = x0;
        super.y0 = y0;

        super.x0 = x1;
        super.y0 = y1;
    }
}

class Fasada{

}

public class Main {
    public static void main(String[] args) {
       Fasada fasada = new Fasada();

    }
}