// Parabola
class ParabolaFigure extends Figure {
    public boolean contains(int loc_x, int loc_y) {
	int dx = loc_x - x;
	int dy = loc_y - y;
	return dx * dx <= a * dy;
    }
    public void read(chapman.io.StdIn in) {
	super.read(in);
	System.out.print("  width? ");
	a = in.readInt();
    }
    private int a;
}