using System;
using static System.Console;
using System.Linq;
using System.Collections.Generic;
using System.Globalization;
using System.Runtime.CompilerServices;
using System.Runtime.Intrinsics.X86;

class Program
{
    static int NN => int.Parse(ReadLine());
    static int[] NList => ReadLine().Split().Select(int.Parse).ToArray();
    static string[] SList(long n) => Enumerable.Repeat(0, (int)n).Select(_ => ReadLine()).ToArray();
    public static void Main()
    {
        Solve();
    }
    static void Solve()
    {
        var c = ReadLine().Split();
        WriteLine(Num(c[0]) + Num(c[1]));
    }
    static int Num(string s)
    {
        s = s.ToUpper();
        if (s == "A") return 10;
        else if (s == "-A") return -10;
        else return int.Parse(s);
    }
}