import java.io.*;
import java.util.*;
import java.util.stream.*;

public class Main {
    public static void main(String[] args) throws Exception {
        Scanner sc = new Scanner();
        char[] string = "285714".toCharArray();
        int n = 0;
        for (char c : sc.next().toCharArray()) {
            n *= 10;
            n %= 6;
            n += c - '0';
            n %= 6;
        }
        int idx = 1;
        char[] inputs = sc.next().toCharArray();
        for (int i = inputs.length - 1; i >= 0; i--) {
            idx *= pow(n, inputs[i] - '0');
            idx %= 6;
            n = pow(n, 10);
        }
        idx += 5;
        idx %= 6;
        System.out.println(string[idx]);
    }
    
    static int pow(int x, int p) {
        if (p == 0) {
            return 1;
        } else {
            return pow(x, p - 1) * x % 6;
        }
    }
}
class Utilities {
    static String arrayToLineString(Object[] arr) {
        return Arrays.stream(arr).map(x -> x.toString()).collect(Collectors.joining("\n"));
    }
    
    static String arrayToLineString(int[] arr) {
        return String.join("\n", Arrays.stream(arr).mapToObj(String::valueOf).toArray(String[]::new));
    }
}
class Scanner {
    BufferedReader br = new BufferedReader(new InputStreamReader(System.in));
    StringTokenizer st = new StringTokenizer("");
    StringBuilder sb = new StringBuilder();
    
    public Scanner() throws Exception {
        
    }
    
    public int nextInt() throws Exception {
        return Integer.parseInt(next());
    }
    
    public long nextLong() throws Exception {
        return Long.parseLong(next());
    }
    
    public double nextDouble() throws Exception {
        return Double.parseDouble(next());
    }
    
    public int[] nextIntArray() throws Exception {
        return Stream.of(br.readLine().split(" ")).mapToInt(Integer::parseInt).toArray();
    }
    
    public String next() throws Exception {
        while (!st.hasMoreTokens()) {
            st = new StringTokenizer(br.readLine());
        }
        return st.nextToken();
    }
    
}