#include <bits/stdc++.h>
using namespace std;

int main(){
    string str, separator(",");
    bool flag = true;
    cin >> str;
    string tstr = str + separator;
    long l = tstr.length(), sl = separator.length();
    string::size_type pos = 0, prev = 0;
    for (;pos < l && (pos = tstr.find(separator, pos)) != string::npos; prev = (pos += sl)) {
        string item = tstr.substr(prev, pos - prev);
        if(!item.compare("AC\n")){
            flag = false;
        }
    }
    if(flag){
        cout << "Done!";
    } else {
        cout << "Failed...";
    }
    
}