#include <bits/stdc++.h>
using namespace std;
#include <atcoder/all>
using namespace atcoder;
using ll=long long;
using Graph=vector<vector<int>>;
#define INF 1000000000
#define MOD 998244353
#define MAX 200000

int main(){
  string S;
  cin>>S;
  if(S.find("4")!=string::npos&&S.find("6")!=string::npos){
    cout<<"Beautiful"<<'\n';
  }else{
    cout<<"..."<<'\n';
  }
}