The video is not so much about the problem solving process so it's not good for hints. The visualizations alone makes the problem a lot easier off the bat. It'

The video is not so much about the problem solving process so it's not good for hints. The visualizations alone makes the problem a lot easier off the bat. It's mainly about showcasing a problem that is objectively hard (based on IMO competition results) then revealing the simple thought process that will lead you to an "obvious" answer in a few short minutes. The main point is that there are problems where once you know the "trick", you can't accurately judge how hard the problem is anymore. I think people would appreciate that point a lot more if they struggle with the problem for a bit first!