import java.io.*;
import java.util.*;
import java.math.*;

class Main167 {
	
	public static void out (Object out) {
		System.out.println(out);
	}
	
	public static void main (String[] args) throws IOException {
		BufferedReader br = 
			new BufferedReader(new InputStreamReader(System.in));
		
		String s1 = br.readLine();
		String s2 = br.readLine();
		
		int n = s1.charAt(s1.length() - 1) - '0';
		int m = s2.length() >= 2 ? Integer.parseInt(s2.substring(s2.length() - 2 , s2.length())) : Integer.parseInt(s2);
		
		if (s2.equals("0")) {
			out(1);
		} else {
			m %= 4;
			if (m == 0) m = 4;
			out((int)Math.pow(n, m) % 10);
		}
	}
}