#include "bits/stdc++.h"

#define REP(i, n) for(decltype(n) i = 0; i < (n); i++)
#define REP2(i, x, n) for(decltype(x) i = (x); i < (n); i++)
#define RREP(i, n) for (decltype(n) i = (n) - 1;i >= 0; i--)

#define ALL(a) (a).begin(),(a).end()
#define SORT(c) sort((c).begin(),(c).end())
#define DESCSORT(c) sort(c.begin(), c.end(), greater<int>())

#define LL long long int
#define LD long double

#define PI 3.14159265358979

#define _CRT_SECURE_NO_WARNINGS

using namespace std;

//================================================
int main() {
	ios::sync_with_stdio(false);
	cin.tie(0);

	string N, M;
	cin >> N >> M;
	
	if (M == "0") { cout << "1" << "\n"; return 0; }

	int n = N[N.size() - 1] - '0';
	M = "0" + M;

	int m = 10 * (M[M.size() - 2] - '0') + (M[M.size() - 1] - '0');
	cout << (int)pow(n, (m + 3) % 4 + 1) % 10 << "\n";
	return 0;
}