It has come to my attention that the tutorial on persistent segment trees here: https://usaco.guide/adv/persistent/#persistent-segment-tree
is pointing to an old link to my slides that got invalidated after a certain update to Google Drive. Here’s a new link to my slides:
I’ve been getting quite a few emails of people trying to access the slides through the old link, but I didn’t know where they were coming from. Hopefully you can replace the link fast so that they can access the slides properly now.