public class Piste {
    public double x;
    public double y;

    /**
     * Returns a hash code value for the object.
     * @return  a hash code value for this object.
     */
    public int hashCode() {
        // TODO
        return 0;
    }

    public boolean equals(Piste p) {
        if (p == null)
            return false;
        return (this.x == p.x) && (this.y == p.y);
    }
}