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

namespace Program
{
    class Program
    {
        static void Main(string[] args)
        {
            var inputs = Console.ReadLine().Split(' ').Select(i => int.Parse(i));

            Console.WriteLine(inputs.ElementAt(0) - (-1 * inputs.ElementAt(1)));
        }
    }
}