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


class Program
{
    static void Main(string[] args)
    {
        int[] input = Console.ReadLine().Split().Select(int.Parse).ToArray();
        int sum = 0;
        for (int i = 0; i < input.Length; i++)
        {
            int rev = 0;
            while (input[i] > 0)
            {

                int r = input[i] % 10;
                rev = rev * 10 + r;
                input[i] = input[i] / 10;
            }
            sum += rev;
        }
        Console.WriteLine(sum);
    }
}