<?php
$n = trim(fgets(STDIN));
$m = strlen($n);
$a = 0;
$b = 0;
for ($i = 0; $i < $m; $i++) {
     if ($n[$i] == 4) {
         $a++;
     }elseif ($n[$i] == 6) {
         $b++;
     }
}

if ($a > 0 && $b > 0) {
    echo "Beautiful";
}else {
    echo "...";
}
?>