#include<bits/stdc++.h>
using namespace std;
#define rep(i,n) for(int i=0;i<n;i++)
#define ll long long int


int main(){
 string S;
 cin >> S;
 bool a=0,b=0;
 rep(i,S.size()){
   if(S[i]=='4')a=1;
   if(S[i]=='6')b=1;
 }
 if(a==1&&b==1){
   cout<<"Beautiful"<<endl;
 }
 else{
   cout<<"..."<<endl;
 }
  

}