using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;

namespace ConsoleApplication1
{
    class Program
    {
        static void Main(string[] args)
        {
            string secretword = Console.ReadLine();
            string message = Console.ReadLine();

            int sum = 0;
            int r;
            foreach( char c in secretword)
            {
                sum += (int)c;
            }
            int mask = 0;
            while (sum != 0)
            {
                r = sum % 10;
                sum = sum / 10;
                mask = mask + r;
            }
            //char[] newArr = message.ToCharArray();
            string encryption = string.Empty;
            for(int i=0;i<message.Length;i++)
            {
                char currChar = message[i];
               if(currChar%mask==0)
                {
                    currChar +=(char)(mask);
                }
               else
               {
                   currChar -= (char)(mask);
               }
               encryption += currChar;
            }
            char[] eArray = encryption.ToCharArray();
            Array.Reverse(eArray);
            Console.WriteLine(eArray);
        }
    }
}