DEBUGGG

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

namespace ConsoleApp7
{
    class Program
    {

        static void Main(string[] args)
        {

            List<int> nums = Console.ReadLine().Split(' ').Select(int.Parse).ToList();

            var sum = 0;
            int reverse = 0;
            for (int i = 0; i < nums.Count; i++)
            {
                reverse = 0;
                while (nums[i] > 0)
                {
                    int remove = nums[i] % 10; // 1 2 3 = 3  // 123%10 = 3
                    reverse = (reverse * 10) + remove; // reverse(0) = (0 * 10) + remove(3) = 3
                    nums[i] = nums[i] / 10; // 1 / 10 = 1
                    // 3 2 1

                }
                sum += reverse;
            }
            Console.WriteLine(sum);

        }
    }
}