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

int main() {
  string s;
  cin >> s;
  for(int i = 0;i < s.size();i += 3){
    if(s[i] != 'A'){
      cout << "Failed..." << endl;
      return 0;
    }
  }
  cout << "Done!" << endl;
}