#include <iostream>
#include <vector>
#include <string>
#include <cstring>
#include <math.h>
#include <cmath>
#include <limits.h>
#include <map>
#include <set>
#include <queue>
#include <algorithm>
#include <functional>
#include <stdio.h>
using namespace std;

long long MOD = 1000000007;

int main() {
    
    string N,M;
    cin >> N >> M;

    if ( M == "0" ) { cout << 1 << endl; return 0; }

    int a = N[N.length()-1] - '0';
    int b[4];
    
    int n = a;
    for ( int i = 0; i < 4; i++ ) {
        b[i] = n;
        n *= a;
        n %= 10;
    }

    cout << b[stoi(M.substr(M.length()-2,2))%4 - 1] << endl;

    return 0;
}