#include <iostream>
using namespace std;

int main() {

int n;
cin >> n;

if(n % 4 == 0) {
cout << "Nema ostatok" << endl;
}
else if(n % 4 == 1) {
cout << "Ostatok 1" << endl;
}
else if(n % 4 == 2) {
cout << "Ostatok 2" << endl;
}
else {
cout << "Ostatok 3" << endl;
}

return 0;
}