#include <bits/stdc++.h>
using namespace std;
typedef int64_t ll;


void solve() {
  cin.tie(nullptr);
  ios::sync_with_stdio(false);
  string s;
  cin>>s;
  stringstream ss(s);
  string token;
  vector<string> ans;
  while(getline(ss, token, ',')) {
    ans.push_back(token);
  }
  for(ll i=0;i<ans.size();i++){
    if(ans.at(i)!="AC"){
      cout<<"Failed..."<<endl;
      return;
    }
  }
  cout<<"Done!"<<endl;
} 

int main() { solve();system("pause"); }