#include <iostream>

using namespace std;

int main() {
    double p;
    while (true) {
        cin >> p;
        if(p == 0) {
            cout << "lol zero" << endl;
            p = 0; // fix
            continue;
        }

        if(p != 1337)
            cout << "fail :c" << endl;
        else
            break;
    }
}