abstract class Shape {
    private double x, y; // position
    
    public double getX() {
        return x;
    }
    public double getY() {
        return y;
    }
    public void move(double x, double y) {
        this.x = x;
        this.y = y;    
    }
    public void translate(double dx, double dy) {
        this.x += dx;
        this.y += dy;
    }
    public String toString() {
        return String.format("(%g, %g)", getX(), getY());
    }
}