#include <bits/stdc++.h>
using namespace std;
#ifdef LOCAL
  #include "settings/debug.cpp"
#else
  #define Debug(...) void(0)
#endif
#define rep(i, n) for (int i = 0; i < (n); ++i)
using ll = long long;
using ull = unsigned long long;

int main() {
  string n, m;
  cin >> n >> m;
  if (m == "0") {
    cout << 1 << endl;
    return 0;
  }
  int mm = 0;
  for (char c : m) {
    mm = (mm * 10 + c - '0') % 4;
  }
  vector<int> v;
  switch (n.back()) {
    case '1':
      cout << 1 << endl;
      break;
    case '2':
      v = { 6, 2, 4, 8 };
      cout << v[mm] << endl;
      break;
    case '3':
      v = { 1, 3, 9, 7 };
      cout << v[mm] << endl;
      break;
    case '4':
      v = { 6, 4, 6, 4 };
      cout << v[mm] << endl;
      break;
    case '5':
      cout << 5 << endl;
      break;
    case '6':
      cout << 6 << endl;
      break;
    case '7':
      v = { 1, 7, 9, 3 };
      cout << v[mm] << endl;
      break;
    case '8':
      v = { 6, 8, 4, 2 };
      cout << v[mm] << endl;
      break;
    case '9':
      v = { 1, 9, 1, 9 };
      cout << v[mm] << endl;
      break;
    case '0':
      cout << 0 << endl;
      break;
  }
  return 0;
}