#include <iostream>
#include <cstring>
#include <string>

using namespace std;

int main()
{
	string N, M;
	cin >> N >> M;
	string g = N.substr(N.length() - 1, 1);
	int p = atoi(g.c_str());
	int l = p;
	if (M == "0") {
		cout << 1;
		return 0;
	}
	int k = p;
	int i = 0;
	do {
		k = (k * p) % 10;
		i++;
	} while (!(k == p));
	int t = 0;
	int n = M.length();
	for (int j = 0; j < n; j++) {
		string pp = M.substr(j, 1);
		int r = atoi(pp.c_str());
		t = (r + (t * 10)) % i;
	}
	t = t - 1 + i;

	for (int i = 0; i < t; i++) {
		int x = l;
		p *= x;
		p = p % 10;
	}
	cout << p;



	getchar();
	getchar();
	return 0;
}