#define _USE_MATH_DEFINES
#include <algorithm>
#include <cstdio>
#include <functional>
#include <iostream>
#include <cfloat>
#include <climits>
#include <cstring>
#include <cmath>
#include <map>
#include <queue>
#include <set>
#include <sstream>
#include <stack>
#include <string>
#include <time.h>
#include <vector>
using namespace std;

typedef long long ll;
typedef unsigned long long ull;
typedef pair<int, int> i_i;
typedef pair<ll, int> ll_i;
typedef pair<double, int> d_i;
typedef pair<ll, ll> ll_ll;
typedef pair<double, double> d_d;
struct edge { int u, v; ll w; };

ll MOD = 1000000007;
ll _MOD = 1000000009;
double EPS = 1e-10;

int pow_mod(ll x, ll n, int m) {
	ll res = 1;
	for (; n > 0; n >>= 1) {
		if (n & 1) res = (res * x) % m;
		x = (x * x) % m;
	}
	return res;
}

int main() {
	string N, M; cin >> N >> M;
	int x = N.back() - '0';
	if (M == "0") {
		cout << 1 << endl;
		return 0;
	}
	if (x == 0 || x == 5) {
		cout << x << endl;
		return 0;
	}
	if (M.length() >= 5) {
		if (x == 1 || x == 3 || x == 9) {
			cout << 1 << endl;
			return 0;
		}
		else {
			cout << 6 << endl;
			return 0;
		}
	}
	stringstream ss(M);
	int y; ss >> y;
	cout << (x, y, 10) << endl;
}