#include <iostream>
#include <string>
#include <vector>
#include <boost/algorithm/string/classification.hpp>
#include <boost/algorithm/string/split.hpp>

using namespace std;
using namespace boost::algorithm;

int main(){
    string str;
    cin >> str;
    vector<string> v;
    split(v, str, boost::is_any_of(","));
    for(auto&& i : v){
        if(i != "AC"){
            cout << "Failed...\n";
            return 0;
        }
    }
    cout << "Done!\n";
}