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

using ll=long long;
ll mod=1000000007;
ll INF=1LL<<60;

int main() {
	string N,M;
	cin >> N >> M;
	if(M=="0"){
	    cout << 1 << endl;
	    return 0;
	}
	vector<vector<int>> A={{0,0,0,0},{1,1,1,1},{6,2,4,8},{1,3,9,7},{6,4,6,4},{5,5,5,5},{6,6,6,6},{1,7,9,3},{6,8,4,2},{1,9,1,9}};
	int B=N.back()-'0',C;
	if(M.size()>=2)C=stoi(M.substr(M.size()-2,2))%4;
	else C=(M[0]-'0')%4;
	cout << A[B][C] << endl;
}