#include<bits/stdc++.h>
using namespace std;
typedef long long ll;
typedef pair<int,int> P;
const int INF=100000000;
#define rep(i,n) for(int i=0;i<(n);++i)
#define YESNO(flag) if(flag){cout<<"YES"<<endl;}else{cout<<"NO"<<endl;}
#define yesno(flag) if(flag){cout<<"yes"<<endl;}else{cout<<"no"<<endl;}
#define YesNo(flag) if(flag){cout<<"Yes"<<endl;}else{cout<<"No"<<endl;}

int main(){
 string n; cin>>n;
 int j=n.size();
 
 bool flag4=false;
 bool flag6=false;
 for(int i=0;i<j;++i){
     
     if(n[i]=='4'){
         flag4=true;
     }else if(n[i]=='6'){
         flag6=true;
     }
 }

 
 if(flag4&&flag6){
     cout<<"Beautiful";
 }else{
     cout<<"...";
 }

}