Gosho tarikatski

using System;
using System.Linq;

namespace _01._Gosho_tarikatski
{
    class Program
    {
        static void Main(string[] args)
        {
            int code = 0;
            int[] numbers = Console.ReadLine()
                .Split()
                .Select(n => int.Parse(n))
                .ToArray();


            int place = 1;
            for (int i = 1, j = 3; i <= 3; i++, j--)
            {
                int currentDigit = GetDigit(numbers[0], i) + GetDigit(numbers[1], j);
                if (currentDigit > 9)
                {
                    code += (currentDigit % 10 + currentDigit / 10) * place;
                }
                else
                {
                    code += currentDigit * place;
                }
                place *= 10;
            }

            Console.WriteLine(code);
        }

        public static int GetDigit(int number, int digitPlace)
        {

            switch (digitPlace)
            {
                case 1:
                    return number % 10;
                case 2:
                    return number / 10 % 10;
                case 3:
                    return number / 100;
                default:
                    return -1;
            }

        }
    }

}