/* -*- coding: utf-8 -*-
 *
 * 1721.cc:  No.1721 [Cherry 3rd Tune N] 麗しきNumber - yukicoder
 */

#include<cstdio>
#include<algorithm>
 
using namespace std;

/* constant */

/* typedef */

/* global variables */

/* subroutines */

/* main */

int main() {
  int n;
  scanf("%d", &n);

  bool f4 = false, f6 = false;
  while (n > 0) {
    int d = n % 10;
    if (d == 4) f4 = true;
    else if (d == 6) f6 = true;
    n /= 10;
  }

  if (f4 && f6) puts("Beautiful");
  else puts("...");
  return 0;
}