public class Shape  {	
	protected int width;
	protected int height;
	
	public Shape(int width, int height){
		this.width = width; 
		this.height = height;
	}

	public String toString(){ 
		return "Shape, width: " + width + 
		       ", height: " + height ;}

	public double area() {
		System.out.println ("Area not implemented for this shape");
		return -1.0;
	}
}