using System;

using System.Collections.Generic;

using System.Linq;

public class Program

{

    public static void Main()

    {

​

        Console.WriteLine(Program.generic(33));

    }

    public static string generic (int n) { 

​

        string str = "dummytextttt"; 

        Dictionary<char, int> dic =

        new Dictionary<char, int>();

        for (int i = 0; i < str.Length; i++) {             

            try

            {

                dic.Add(str[i], 1); 

            }

            catch (ArgumentException)

            {

                dic.Add(str[i], dic[str[i]] + 1); 

            }

        } 

        return "";

    }

​

}