#include <bits/stdc++.h>
using namespace std;
int main(){
  string N;
  cin >> N;
  N = '0' + N;
  string S = N.substr(N.size() - 2);
  int d = stoi(S);
  if (d % 2 == 1 || d % 4 == 0){
    cout << 1 << endl;
  } else {
    cout << -1 << endl;
  }
}