#include <bits/stdc++.h>

#define REP(i, x, n) for(int i = x; i < (int)(n); i++)
#define rep(i, n) REP(i, 0, n)
#define all(x) (x).begin(), (x).end()
#define rall(x) (x).rbegin(), (x).rend()
#define F first
#define S second
#define mp make_pair

using namespace std;

typedef long long ll;
typedef unsigned long long ull;
typedef pair<int, int> P;

int main() {
  // ios_base::sync_with_stdio(false);
  string N, M;
  cin >> N >> M;

  int n = N.back() - '0';
  M = "0" + M;
  int sz = M.size();
  int m = 10 * (M[sz - 2] - '0') + (M[sz - 1] - '0');

  if(m == 0) cout << "1" << endl;
  else cout << (int)pow(n, (m + 3) % 4 + 1) % 10 << endl;
  
  return 0;
}