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

int main(){
	cin.tie(0),ios::sync_with_stdio(false);
	string s; cin>>s;
	for(int i=0;i<s.size();++i){
		if(s.at(i)=='A'||s.at(i)=='C'||s.at(i)==',')continue;
		cout<<"Failed...\n"s;
		return 0;
	}
	cout<<"Done!\n"s;
}