#include <bits/stdc++.h>
using namespace std::literals::string_literals;
using i64 = std::int_fast64_t;
using std::cout;
using std::cerr;
using std::endl;
using std::cin;

template<typename T>
std::vector<T> make_v(size_t a){return std::vector<T>(a);}

template<typename T,typename... Ts>
auto make_v(size_t a,Ts... ts){
  return std::vector<decltype(make_v<T>(ts...))>(a,make_v<T>(ts...));
}

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

	std::vector<std::string> vec(1, "");
	for(auto c: s) {
		if(c == ',') vec.push_back("");
		else vec.back() += c;
	}

	if(all_of(begin(vec), end(vec), [](auto x) { return x == "AC"; })) printf("Done!\n");
	else printf("Failed...\n");
	return 0;
}