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{
            if(m.length()==1){
                mm[0] = 0;
                mm[1] = 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);
                int mnum = Integer.parseInt(mmm);
                int nnum = Character.getNumericValue(nn);
                if(nnum<2||nnum==5||nnum==6){
                    System.out.println(nnum);
                }else if(nnum==2){
                    System.out.println((6*(Math.pow(2,mnum%4)))%10);
                }else if(nnum==3){
                    System.out.println((Math.pow(3,mnum%4))%10);
                }else if(nnum==4){
                    System.out.println((6*(Math.pow(4,mnum%2)))%10);
                }else if(nnum==7){
                    System.out.println((Math.pow(7,mnum%4))%10);
                }else if(nnum==8){
                    System.out.println(6*(Math.pow(8,mnum%4))%10);
                }else{
                    System.out.println((Math.pow(9,mnum%2))%10);
                }
            }
        }
    }
}