#include <bits/stdc++.h>
using namespace std;

vector<int> ume[] = {
    {0},
    {1},
    {2,4,8,6},
    {3,9,7,1},
    {4,6},
    {5},
    {6},
    {7,9,3,1},
    {8,4,2,6},
    {9,1}
};

int mod(const string& s, int m){
    int res = 0;
    for(char c : s){
        res = res * 10 + (c - '0');
        res %= m;
    }
    return res;
}

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

    if(M == "0"){
        cout << 1 << endl;
    } else {
        int n = mod(N, 10);

        int sz = ume[n].size();
        int m = (mod(M, sz) - 1 + sz) % sz;

        cout << ume[n][m] << endl;
    }

    return 0;
}