#include<stdio.h>
int main()
{
	int n;
	scanf("%d", &n);
	int cnt[10];
	int i;
	for (i = 0; i < 10; i++)
		cnt[i] = 0;
	for (; n > 0; n /= 10)
		cnt[n % 10]++;
	if (cnt[4] > 0 && cnt[6] > 0)
		printf("Beautiful\n");
	else
		printf("...\n");
	return 0;
}