#include <bits/stdc++.h>

using namespace std;

int main(){
    bool flag=true;
    while(flag){
        string s;
        cin >>s;
        if(s!="AC"){
            flag = false;
            break;
        }
    }
    if(flag){
        cout << "Done!" << endl;
    }
    else{
        cout << "Failed..." << endl;
    }
}