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

//No.353 ヘイトプラス
class Program
{
    static string InputPattern = "InputX";

    static List<string> GetInputList()
    {
        var WillReturn = new List<string>();

        if (InputPattern == "Input1") {
            WillReturn.Add("1 2");
            //3
        }
        else if (InputPattern == "Input2") {
            WillReturn.Add("765 346");
            //1111
        }
        else {
            string wkStr;
            while ((wkStr = Console.ReadLine()) != null) WillReturn.Add(wkStr);
        }
        return WillReturn;
    }

    static void Main()
    {
        List<string> InputList = GetInputList();

        int[] wkArr = InputList[0].Split(' ').Select(X => int.Parse(X)).ToArray();
        int A = wkArr[0];
        int B = wkArr[1];
        Console.WriteLine(A - (-B));
    }
}