/**
 * TreeNode.
 */
class TreeNode {
    private int data;
    private TreeNode leftNode;
    private TreeNode rightNode;

    public TreeNode(int nodeData) {
        data = nodeData;
        leftNode = rightNode = null;
    }
}

/**
 * Tree (of TreeNodes).
 */
class Tree {
    TreeNode root;

    /**
     * Adds the specified value to the Tree. * @param value an int
     */
    public void add(int value) {
        TreeNode temp = new TreeNode(value);
        if (root == null)
            root = temp;
        else
            add(root, temp);

    }

    /*
     * Implement this helper method.
     *
     * @param currentNode
     *
     * @param newNode
     */
    private void add(TreeNode currentNode, TreeNode newNode) {

    }
}