import java.util.*;

public class Main {
	public static void main (String[] args)  {
		Scanner sc = new Scanner(System.in);
		char[] nArr = sc.next().toCharArray();
		int modN = nArr[nArr.length - 1] - '0';
		char[] mArr = sc.next().toCharArray();
		if (mArr.length == 0 && mArr[0] == '0') {
		    System.out.println(1);
		    return;
		}
		if (nArr.length == 0 && nArr[0] == '0') {
		    System.out.println(0);
		    return;
		}
		int modM = 0;
		for (char c : mArr) {
		    modM *= 10;
		    modM += c - '0';
		    modM %= 8;
		}
		modM %= 4;
		modM += 4;
		long ans = 1;
		for (int i = 1; i <= modM; i++) {
		    ans *= modN;
		}
		ans %= 10;
		System.out.println(ans);
	}
}