import java.util.Scanner;

public class Main {
	public static void main(String[] args) {
		Scanner sc = new Scanner(System.in);
		char[] N = sc.next().toCharArray();
		String mString = sc.next();
		sc.close();
		int a = Character.getNumericValue(N[N.length - 1]);
		int b = 0;
		if (mString.length() > 2) {
			b = Integer.parseInt(mString.substring(mString.length() - 2, mString.length()));
			b %= 4;
			b += 4;
		} else {
			b = Integer.parseInt(mString);
			if (b != 0) {
				b %= 4;
				b += 4;
			}
		}

		System.out.println((int) (Math.pow(a, b) % 10));

	}
}