#include <iostream>
using namespace std;

int main() {
    int n;
    cin >> n;
    int prv_slucaj = n;
    int vtor_slucaj = n + 1;
    int tret_slucaj = n + 2;
    int cetvrti_slucaj = n + 3;
    if(prv_slucaj % 4 == 0) {
        cout << 9 * 0 << endl;
    }
    else if(vtor_slucaj % 4 == 0) {
        cout << 9 * 1<< endl;
    }
    else if(tret_slucaj % 4 == 0) {
        cout << 9 * 2 << endl;
    }
    else {
        cout << 9 * 3 << endl;
    }
    return 0;
}