using System;
using System.Collections.Generic;
using System.Linq;

namespace SumReversedNumbers
{
    class Program
    {
        static void Main(string[] args)
        {
            List<int> seq = Console.ReadLine().Split(' ').Select(int.Parse).ToList();
            long sum = 0;

            for (int i = 0; i < seq.Count; i++)
            {
                int num = seq[i];
                string reversed = "";

                while(num > 0)
                {
                    int lastDigit = num % 10;
                    reversed += lastDigit;
                    num /= 10;
                }

                sum += int.Parse(reversed);
            }

            Console.WriteLine(sum);
        }
    }
}