#include<iostream>
#include<vector>
#include<algorithm>
#include<cctype>
#include<utility>
#include<string>
#include<cstring>
#include<cmath>
#include<numeric>
#include<queue>
#include<climits>
#include<cstdio>


#define REP(i, n) for(int i = 0;i < n;i++)
#define REPR(i, n) for(int i = n;i >= 0;i--)
#define FOR(i, m, n) for(int i = m;i < n;i++)
#define FORR(i, m, n) for(int i = m;i >= n;i--)
#define SORT(v, n) sort(v, v+n);
#define VSORT(v) sort(v.begin(), v.end());
#define llong long long
#define pb(a) push_back(a)
//#define INF ((LLONG_MAX) / (2))
using namespace std;
typedef pair<int, int> P;
typedef pair<llong, llong> LP;
typedef pair<int, P> PP;
typedef pair<llong, LP> LPP;
typedef long long int ll;
typedef pair<ll,int> LL_IP;
typedef pair<ll,ll> LL_LLP;
#define INF 1e9+7


int main(){

    string n,m;
    cin >> n >> m;
    int ans = 1;
    int a = (n[n.length()-1] -'0');
    int b = 0;
    if(m.length() == 1){
        b = (m[m.length()-1] - '0'); 
    }else{
        b = (m[m.length()-2]-'0')*10 + (m[m.length()-1] - '0'); 
    }

    //cout << a << " " << b << endl;
    int tmp = b % 4;
    if(tmp == 0){
        if(m != "0"){
            tmp = 4;
        }
    }
    ans = (int)pow(a,tmp)%10;
   
    cout << ans << endl;

    return 0;
}