using System;

public class Program
{
    static void Main()
    {
        string n = Console.ReadLine();
        var table = new int[,]{{0,0,0,0},
        {1,1,1,1},
        {2,4,8,6},
        {3,9,7,1},
        {4,6,4,6},
        {5,5,5,5},
        {6,6,6,6},
        {7,9,3,1},
        {8,4,2,6},
        {9,1,9,1}};
        var last = int.Parse(""+n[n.Length-1]);
        string m = Console.ReadLine();
        if(m == "0"){
            Console.WriteLine(1);
            return;
        }
        var mm = int.Parse((m.Length < 2 || m[m.Length-2] == 0 ? "" : ""+m[m.Length-2]) + m[m.Length-1]);
        Console.WriteLine(table[last, (mm+3)%4]);
    }
}