#include <iostream>
using namespace std;

int main(void){
    string n;
    cin >> n;
    bool isF = false, isS = false;
    for (int i = 0; i < (int)n.size(); i++) {
        if (n[i] == '4') isF = true;
        if (n[i] == '6') isS = true;
    }
    if (isF && isS) {
        cout << "Beautiful" << endl;
    }
    else cout << "..." << endl;
}