#include <bits/stdc++.h>
using namespace std;
typedef long long int ll;
typedef pair<ll,ll> P;
typedef vector<ll> VI;
typedef vector<VI> VVI;
#define REP(i,n) for(ll i=0;i<(n);i++)
#define ALL(v) v.begin(),v.end()
template<typename T> bool chmax(T &x, const T &y) {return (x<y)?(x=y,true):false;};
template<typename T> bool chmin(T &x, const T &y) {return (x>y)?(x=y,true):false;};
constexpr ll MOD=998244353;
constexpr ll INF=2e18;

int main(){
    string s; cin >> s;
    bool x=0, y=0;
    for(auto c:s){
        if(c=='4')
            x=1;
        else if(c=='6')
            y=1;
    }
    if(x&&y)
        cout << "Beautiful" << endl;
    else
        cout << "..." << endl;
}