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

namespace Messages
{
    class Program
    {
        static string[] numSystem = { "cad", "xoz", "nop", "cyk", "min", "mar", "kon", "iva", "ogi", "yan"};

        static void Main(string[] args)
        {
            string firstStr = Console.ReadLine();
            string op = Console.ReadLine();
            string secondStr = Console.ReadLine();

            int firstNum = Decrypt(firstStr);
            int secondNum = Decrypt(secondStr);

            int numResult = (op == "+" ? firstNum + secondNum : firstNum - secondNum);
            string result = Encrypt(numResult);

            Console.WriteLine(result);
        }

        private static string Encrypt(int num)
        {
            string result = "";
            int digit = 0;

            while (num > 0)
            {
                digit = num % 10;
                result = numSystem[digit] + result;
                num /= 10;
            }

            return result;
        }

        private static int Decrypt(string str)
        {
            int result = 0;
            string digit;
            for (int i = 0; i < str.Length; i+=3)
            {
                digit = str.Substring(i, 3);
                result = result * 10 + Array.IndexOf(numSystem, digit);
            }

            return result;
        }

    }
}