#include<stdio.h>
#include<string.h>
int main()
{
	char s[400005];
	scanf("%s", s);
	int i, n = strlen(s);
	for (i = 0; i < n; i += 3)
	{
		if (s[i] != 'A')
		{
			printf("Failed...\n");
			return 0;
		}
	}
	printf("Done!\n");
	return 0;
}