import java.util.Scanner;

public class Main {
	public static void main(String[] args) {
		Scanner scan = new Scanner(System.in);
		int N = scan.nextInt();
		int M = scan.nextInt();
		scan.close();
		int r = N % 10;
		int ans = 0;
		int k;
		switch(r) {
			case 1:
				ans = 1;
				break;
			case 2:
				k = M % 4;
				if(k == 1) {
					ans = 2;
				}else if(k == 2) {
					ans = 4;
				}else if(k == 3) {
					ans = 8;
				}else {
					ans = 6;
				}
				break;
			case 3:
				k = M % 4;
				if(k == 1) {
					ans = 3;
				}else if(k == 2) {
					ans = 9;
				}else if(k == 3){
					ans = 7;
				}else {
					ans = 1;
				}
				break;
			case 4:
				k = M % 2;
				if(k == 1) {
					ans = 4;
				}else {
					ans = 6;
				}
				break;
			case 5:
				ans = 5;
				break;
			case 6:
				ans = 6;
				break;
			case 7:
				k = M % 4;
				if(k == 1) {
					ans = 7;
				}else if(k == 2) {
					ans = 9;
				}else if(k == 3){
					ans = 3;
				}else {
					ans = 1;
				}
				break;
			case 8:
				k = M % 4;
				if(k == 1) {
					ans = 8;
				}else if(k == 2) {
					ans = 4;
				}else if(k == 3){
					ans = 2;
				}else {
					ans = 6;
				}
				break;
			case 9:
				k = M % 2;
				if(k == 1) {
					ans = 9;
				}else {
					ans = 1;
				}
				break;
		}
		System.out.println(ans);
	}
}