public static boolean road(BinNode<Integer> b)
    {
        boolean left = false, right = false;

        if (b.getLeft() == null && b.getRight() == null)
            return true;

        if (b.getLeft() != null)
            if ((b.getValue() < b.getLeft().getValue()))
                left = road(b.getLeft());

        if (b.getRight() != null)
            if (b.getValue() < b.getRight().getValue())
                right = road(b.getRight());

        return (left || right);
    }