using System;
using System.Collections.Generic;
using System.Text;

namespace _2313_trees
{
    class TreeNode
    {
        public string data;
        public TreeNode left;
        public TreeNode right;

        public TreeNode()
        {
            data = "";
            left = null;
            right = null;
        }

        public TreeNode(string d)
        {
            data = d;
            left = null;
            right = null;
        }
    }
}