using System;

using System.Collections.Generic;

using System.Linq;

using System.Text.RegularExpressions;

​

public class Program

{

    public static void Main()

    {

        string inp = "int a = 9 ;";

        Dictionary<string,string> dt = new Dictionary<string,string>()

        {{"int","DT"}};

        Dictionary<string,string> op = new Dictionary<string,string>()

        {{"=","equal"} , {"+=","increment"} , {"-=","decrement"}};

        int []syn = {0,0,0,0,0};

​

        string [] inparr  = inp.Split(' ');

        for(int i = 0; i<5; i++)

        {

            if(i == 0)

            {   string result = ""; 

                if(dt.TryGetValue(inparr[i],out result))

                {Console.WriteLine("< "+ result + " , " + inparr[i] + " >");}

                syn[i] = 1;

            }else if(i == 1)

            {

                Regex id = new Regex(@"^[0-9]");

                Regex id2 = new Regex(@"^_");

                if(id.IsMatch(inparr[i]))

                {

                    Console.WriteLine("Error");

                }else if(id2.IsMatch(inparr[i]))

                {

                    Console.WriteLine("Error 2");

                }else

                {

                    Console.WriteLine("< Identifier , " + inparr[i] + " >");

                }

                syn[i] = 1;

            }else if(i == 2)

            {

                string result = ""; 

                if(op.TryGetValue(inparr[i],out result))

                {Console.WriteLine("< "+ result + " , " + inparr[i] + " >");}

                syn[i] = 1;

            }else if(i == 3)

            {

                Regex num = new Regex(@"[0-9]");

                if(num.IsMatch(inparr[i]))

                {

                    if(inparr[i].Contains("."))

                    {

                        Console.WriteLine("< Value ,  float > ");

                    }else{

                        Console.WriteLine("< Value ,  integer > ");

                    }

                }

                else if(inparr[i].Contains("\""))

                {

                    Console.WriteLine("String");

                }

                syn[i] = 1;

​

            }else if(i == 4)

            {

                if(inparr[i] == ";")

                {

                    Console.WriteLine("< terminator , " + inparr[i] + " >");

                }

                syn[i] = 1; 

            }

        }

        for(int j = 0; j<5; j++)

        {

            if(syn[j] == 0)

            {

                Console.WriteLine(" not available");

            }

        }

    }

}