#include <iostream>
using namespace std;
string solve(long long n){
    bool f = false,s = false;
    while(n){
        if(f && s)return "Beautiful";
        if(n%10==4)f = true;
        if(n%10==6)s = true;
        n/=10;
    }
    if(f && s)return "Beautiful";
    else
    return "...";
}
int main() {
	// your code goes here
	long long n;
	cin>>n;
	cout<<solve(n)<<endl;
	return 0;
}