using System;
using System.Collections;
using System.Collections.Generic;
using System.Collections.Specialized;
using System.Text;
using System.Text.RegularExpressions;
using System.Linq;
using System.IO;
using System.Diagnostics;

class Scanner
{
    private readonly char Separator = ' ';
    private int Index = 0;
    private string[] Line = new string[0];
    public string Next()
    {
        if (Index >= Line.Length)
        {
            Line = Console.ReadLine().Split(Separator);
            Index = 0;
        }
        var ret = Line[Index];
        Index++;
        return ret;
    }

    public int NextInt()
    {
        return int.Parse(Next());
    }

    public long NextLong()
    {
        return long.Parse(Next());
    }
}

class Program
{

    public void Solve()
    {
        var a = Console.ReadLine().Split(' ');
        string ans;
        switch(a[1])
        {
            case "?":
                ans = "14";
                break;
            case "3":
                ans = "1";
                break;
            case "2":
                ans = "4";
                break;
            default:
                throw new Exception();
        }
        Console.WriteLine(ans);
    }

    private bool TwoPow(long n)
    {
        return (n & (n - 1)) == 0;
    }

    static public void Main()
    {
        new Program().Solve();
    }
}