using static System.Math;
using System;

public class Hello
{
    public static void Main()
    {
        var s = Console.ReadLine().Trim();
        var t = Console.ReadLine().Trim();
        var s2 = check6(s);
        var t2 = check6(t);
        var a = (int)Pow(s2, t2) % 6;
        Console.WriteLine("428571"[a]);
    }
    public static int check6(string s)
    {
        if (s.Length == 1) return int.Parse(s) % 6;
        var sum = 0L;
        var sL = s.Length;
        for (int i = 0; i < sL - 1; i++)
            sum += s[i] - '0';
        var b = s[sL - 1] - '0';
        for (int i = 0; i <= 9; i++)
            if (((sum + i) % 3 == 0) && i % 2 == 0 )
            {
                if (b - i < 0) return b - i + 6;
                else return (b - i) % 6;
            }
        return 0;
    }
}