#include <iostream>
#include <vector>
#include <string>
#include <algorithm>
#include <cmath>

#define rep(i,n) for(i=0; i<n; ++i)
#define in(a) cin >> a
#define out(a,b) cout << a << b
using namespace std;
using lint = long long;

int main(void){
    lint i, j;
    lint n, m;
    in(n);
    int r=10;
    bool f_4=false, f_6=false;
    while(n){
        int pop = n%r;
        if(pop==4)  f_4=true;
        else if(pop==6) f_6=true;
        if(f_4&&f_6)    break;
        n/=r;
    }
    f_4&&f_6 ? out("Beautiful",endl) : out("...",endl);

    return 0;
}