using System;
using System.Linq;

namespace Yukicoder
{
    class Program
    {
        static void Main(string[] args)
        {
            var line = Console.ReadLine().Select(
                (x, index) => (int)x + ((index + 1) * -1));

            var str = line.Select(x => x < 65 ? (char)(90 - Math.Abs(64 - x) % 26) : (char)x);
            foreach (var s in str)
            {
                Console.Write(s);
            }
        }
    }
}