#include <iostream>
#include <bits/stdc++.h>
using namespace std;

int main() {
    string s;
    cin>>s;
    int c=0,d=0;
    for(int i=0;i<s.length();i++){
        if(s[i]=='4')c+=1;
        if(s[i]=='6')d+=1;
    }
    if(c>=1 && d>=1) cout<<"Beautiful";
    else cout<<"....";
    
}