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

vector<string> Split(string s, string t) {
  vector<string> v;
  int p = s.find(t);
  while (p != s.npos) {
    v.push_back(s.substr(0, p));
    s = s.substr(p + (int)t.size());
    p = s.find(t);
  }
  v.push_back(s);
  return v;
}

int main() {
  string s;
  cin >> s;

  vector<string> tmp = Split(s,",");
  bool ans = true;
  for (auto x : tmp) {
    if(x!="AC"){
      ans = false;
    }
  }

  if(ans){
    cout << "Done!" << endl;
  }
  else{
    cout << "Failed..." << endl;
  }

  ;
  return 0;
}