#include <iostream>	//cin, cout
#include <vector>	//vector
#include <algorithm> //sort,min,max
#include <string>	//string

using namespace std;

int main() {

	string S;
	cin >> S;

	if (S.find("W") == string::npos) {
		if (S.find("L") == string::npos) {
			cout << "Done!" << endl;
			return 0;
		}
	}

	cout << "Failed..." << endl;

	return 0;

}