//

//     *

//    / \

//   +   2

//  / \

// 8   5

//

​

using System;

​

public class Node

{

    public Node Left;

    public Node Right;

    public string Value;

}

​

public class Program

{

    public static string WriteExpression(Node node)

    {

        // TODO: implement this method

        throw new NotImplementedException();

    }

​

    public static void Main()

    {

        var testData = new Node() 

        {

            Left = new Node()

            {

                Left = new Node()

                {

                    Value = "8"

                },

                Right = new Node()

                {

                    Value = "5"

                },

                Value = "+"

            },

            Right = new Node()

            {

                Value = "2"

            },

            Value = "*"

        };

        var result = WriteExpression(testData);

        var expected = "8+5*2";

        Console.WriteLine($"YOUR OUTPUT WAS ==> {result}");

        Console.WriteLine(result == expected ? "SUCCESS" : "FAILURE");

    }

}