#include <bits/stdc++.h>
using namespace std;
typedef long long ll;
// Welcome to my source code!

int main() {
    char c[3];
    bool flag = true;
    while (cin >> c[0] >> c[1]) {
        if (c[0] != 'A') {
            flag = false;
            break;
        }
        cin >> c[2];
    }
    if (flag) cout << "Done!" << endl;
    else cout << "Failed..." << endl;
}