#include <iostream>
#include <string>
#include <queue>
#include <stack>
#include <algorithm>
#include <list>
#include <vector>
#include <complex>
#include <utility>
#include <cstdio>
#include <cstdlib>
#include <cstring>
#include <cmath>
#include <climits>
#include <bitset>
#include <ctime>
#include <map>
#include <unordered_map>
#include <set>
#include <unordered_set>
#include <cassert>
#include <cstddef>
#include <iomanip>
#include <numeric>
#include <tuple>
#include <sstream>
#include <fstream>

#define REP(i,n) for(long (i)=0;(i)<(n);(i)++)
#define FOR(i,a,b) for(long (i)=(a);(i)<(b);(i)++)
#define RREP(i,a) for(long (i)=(a)-1;(i)>=0;(i)--)
#define FORR(i,a,b) for(long (i)=(a)-1;(i)>=(b);(i)--)
#define MOD 1000000007
#define PI acos(-1.0)
#define DEBUG(C) cout<<C<<endl;
#define VI vector<int>
#define VL vector<long>
#define VD vector<double>
#define PII pair<int,int>
#define PDD pair<double,double>
#define PLL pair<long,long>
#define ALL(a) (a).begin(),(a).end()
#define SORT(a) sort((a).begin(),(a).end())
#define RSORT(a) sort((a).begin(),(a).end(),greater<int>())
#define MP(a,b) make_pair(a,b)
#define FORE(a,b) for(auto &&a:b)

typedef long long LL;
typedef unsigned long long ULL;

using namespace std;

int main(void){
    string n,m; cin>>n>>m;
    VI v;
    int num=n.back()-'0';
    while(v.size()<4){
        v.push_back(num%10);
        //DEBUG(v.back())
        num*=(n.back()-'0');
    }
    int ans;
    if(m.size()>1) ans=(m[m.size()-2]-'0')*10+(m.back()-'0');
    else if(m=="0"){
        cout<<1<<endl; return 0;
    }else ans=(m.back()-'0');
    ans=(ans+3)%4; cout<<v[ans]<<endl;
}