#include <bits/stdc++.h>
using namespace std;
using ll = long long;
const ll MOD = 1000000007;
using P = pair<int,int>;
#define rep(i, n) for(int i = 0; i < n; i++)
#define all(x) (x).begin(),(x).end()

int main(){
    string s;
    cin >> s;
    bool b1 = false, b2 = false;
    for(char c:s){
        if(c=='4') b1 = true;
        if(c=='6') b2 = true;
    }
    if(b1&&b2) cout << "Beautiful" << endl;
    else cout << "..." << endl;
    return 0;
}