#define _USE_MATH_DEFINES
#include  <cmath>
#include <cstdio>
#include <vector>
#include <iostream>
#include <algorithm>
#include <string>
#include<math.h>
#include<iomanip>
#include<stdio.h>
#include <stdlib.h>
#include<stdio.h>
#include <queue>
#include<map>
#include <sstream>
#include<set>
#include<stack>
#include<time.h>
#include <sys/types.h>
#include <tuple>


typedef long long int ll;
//#include<bits/stdc++.h>


using namespace std;



int main()
{

    int Q;
    Q = 1;
    //cin >> Q;
   
    while (Q--) {
        
        string p;
        cin >> p;
        int t = 0;
        int r = 0;
        while ( t>=0) {
            t = p.find_first_of(',');
            string a = p.substr(r, t - r );
            //cout << a << " ";
            if (a != "AC") {
                cout << "Failed...";
                return 0;
            }
            
            r = t+1 ;
            p = p.substr(r);
            t = p.find_first_of(',');
            r = 0;
            
            //cout << p << endl;
        }
        cout << "Done!";
    }

    return 0;
}