using System;

using System.Collections.Generic;

public class Program

{

    static string key = "dacdefgilmnvoprstuw";

    public static void Main()

    {   

        var hash = Hash("programmer");

        Console.WriteLine(hash);

        Console.WriteLine(UnHash(hash));

    }

    //This function will hash a string in numbers

    private static long Hash(string s)

    {

        long hash = 7;

        for(var i = 0; i < s.Length; i++)

        {

            hash = (hash * 23 + key.IndexOf(s[i]));

        }

        return hash;

    }

    //Question: Write an unhash function to get sthe string out of numbers  

    private static string UnHash(long n)

    {       

        var s = "";

        while(n > 7)

        {

            var i = n % 23;

            s = key[(int)i] + s;

            n = (n - i) / 23;           

        }       

        return s;

    }

}