import java.util.*;

public class Exercise104{
  public static void main (String[] args){

    Scanner sc = new Scanner(System.in);

    String str = sc.next();
    int n = Character.getNumericValue(str.charAt(str.length() - 1));
    str = sc.next();
    if(str.equals("0")){
      System.out.println(1);
      return;
    }
    String x = "";
    if(str.length() > 1){
      x += String.valueOf(str.charAt(str.length() - 2));
    }
    x += String.valueOf(str.charAt(str.length() - 1));
    int m = Integer.parseInt(x);

    int[] choises = new int[4];
    for(int i = 1; i <= 4; i++){
      choises[i % 4] = (int)Math.pow(n, i) % 10;
    }
    System.out.println(choises[m % 4]);
  }
}