#include <iostream>
#include <sstream>
#include <vector>
using namespace std;

int main() {
    string s;
    getline(cin, s);
    istringstream iss(s);
    vector<string> vc;
    string ss;
    while (getline(iss, ss, ',')) {
        vc.push_back(ss);
    }
    for (int i = 0; i < vc.size(); i++) {
        if (vc.at(i) != "AC") {
            cout << "Failed..." << endl;
            return 0;
        }
    }
    cout << "Done!" << endl;
    return 0;
}