#include <bits/stdc++.h>
using namespace std;
int main() {
  long long n;
  cin >> n;
  if (n == 0)
    cout << 1;
  else {
    n %= 4;
    if (n == 0) n = 4;
    n = pow(8, n);
    cout << n % 10;
  }
}
