The algorithm is fixed.
<br>
<br>
<iframe width="560" height="315" src="https://www.youtube.com/embed/5czkBR_Yq2Y?si=oY5iYKCbJBpZnIlF" title="YouTube video player" frameborder="0" allow="accelerometer; autoplay; clipboard-write; encrypted-media; gyroscope; picture-in-picture; web-share" referrerpolicy="strict-origin-when-cross-origin" allowfullscreen></iframe>