#include <bits/stdc++.h>

using namespace std;

int s[] = {2, 8, 5, 7, 1, 4};
int main() {
  string a, b;
  cin >> a >> b;
  int x = 0;
  for ( char c:a ) {
    x = (x * 10 + (c - '0')) % 6;
  }
  if ( (b.back() - '0')%2==0 ) x = x * x % 6;
  cout << s[(x + 5) % 6] << '\n';
  return 0;
}