#include <stdio.h>
#include <string.h>

int main(void)
{
	char s[400000];
	int judge = 0;
	int i;

	scanf("%s", s);

	for (i = 0; i < strlen(s) - 1; i += 3) {
		if (s[i] != 'A') {
			judge++;
			break;
		}
	}

	printf("%s\n", judge ? "Failed..." : "Done!");

	return 0;
}