using System;
using static System.Console;
using System.Linq;
using System.Collections.Generic;

class Program
{
    static int NN => int.Parse(ReadLine());
    static int[] NList => ReadLine().Split().Select(int.Parse).ToArray();
    static int[] LList(int n) => Enumerable.Repeat(0, n).Select(_ => int.Parse(ReadLine())).ToArray();
    static void Main()
    {
        Solve();
    }
    static void Solve()
    {
        var a = ReadLine().ToList();
        var b = ReadLine().ToList();
        if (a.Count > b.Count) b = Enumerable.Repeat('0', a.Count - b.Count).Concat(b).ToList();
        if (a.Count < b.Count) a = Enumerable.Repeat('0', b.Count - a.Count).Concat(a).ToList();
        var res = new List<char>();
        var up = 0;
        for (var i = a.Count - 1; i >= 0; --i)
        {
            var sum = (a[i] - '0') + (b[i] - '0') + up;
            if (sum >= 10)
            {
                sum -=10;
                up = 1;
            }
            else up = 0;
            res.Add((char)(sum + '0'));
        }
        if (up > 0) res.Add((char)(up + '0'));
        res.Reverse();
        WriteLine(string.Concat(res));
    }
}