import java.util.*;

public class Main {
    public static void main(String[] args) throws Exception {
        Scanner koko = new Scanner(System.in);
        String n = koko.next();
        String m = koko.next();
        char nn = n.charAt(n.length()-1);
        char[] mm = new char[2];
        if(m.length()==1&&m.charAt(m.length()-1)=='0'){
            System.out.println(1);
        }else{
            int mnum=0;
            int ans;
            if(m.length()==1){
                mnum = m.charAt(m.length()-1);
            }else{
                mm[0] = m.charAt(m.length()-2);
                mm[1] = m.charAt(m.length()-1);
                String mmm = String.valueOf(mm);
                mnum = Integer.parseInt(mmm);
            }
            int nnum = Character.getNumericValue(nn);
            if(nnum<2||nnum==5||nnum==6){
                ans = nnum;
            }else if(nnum==2){
               ans = (int)(6*(Math.pow(2,mnum%4)))%10;
            }else if(nnum==3){
                ans = (int)(Math.pow(3,mnum%4))%10;
            }else if(nnum==4){
                ans= (int)(6*(Math.pow(4,mnum%2)))%10;
            }else if(nnum==7){
                ans = (int)(Math.pow(7,mnum%4))%10;
            }else if(nnum==8){
                ans = (int)(6*(Math.pow(8,mnum%4))%10);
            }else{
                ans = (int)(Math.pow(9,mnum%2))%10;
            }
            System.out.println(ans);
        }
    }
}