#define _GLIBCXX_DEBUG
#include <bits/stdc++.h>
#include <atcoder/dsu>
#include <atcoder/segtree>
using namespace atcoder;
using namespace std;
typedef long long ll;
#define rep(i,a,b) for(int i=a;i<b;i++)
using vi = vector<int>; 
using vvi = vector<vi>; 
using li =vector<ll>;
using lli=vector<li>;
using si =vector<char>;
using ssi =vector<si>;
const long long INF = 1e18;
const long long MOD=1e9+7;
//for (auto [key, val] : mp)
int main() { string n;
cin>>n;
int N=n.size();int ch=0,ans=0;
rep(i,0,N){
	if(n[i]=='4')ch++;
	else if(n[i]=='6')ans++;
}
if(ch>0&&ans>0)cout<<"Beautiful";
else cout<<"...";
}