import java.io.BufferedReader;
import java.io.InputStreamReader;

public class Main {
	public static void main(String[] args) throws Exception {
		BufferedReader br = new BufferedReader(new InputStreamReader(System.in));
		String[] sa = br.readLine().split(",");
		br.close();

		for (int i = 0; i < sa.length; i++) {
			if (!sa[i].equals("AC")) {
				System.out.println("Failed...");
				return;
			}
		}
		System.out.println("Done!");
	}
}