#include <bits/stdc++.h>
using namespace std;
using ll = long long;
using vll = vector<ll>;
using vvll = vector<vll>;
using vvvll = vector<vvll>;

using vb = vector<bool>;
using vvb = vector<vb>;
using vvvb = vector<vvb>;

#define all(A) A.begin(),A.end()
#define rep(i, n) for (ll i = 0; i < (ll) (n); i++)

vvll G;


int main() {
    bool F=false,S=false;
    ll N;
    cin>>N;
    while(N>0){
        if(N%10==4)F=1;
        if(N%10==6)S=1;
        N/=10;

    }
    cout<<(F&&S?"Beautiful":"...")<<endl;
}