His explanations are great and just wanted to +1 on the idea of range trees. Adding a reference here to a very lightweight read on range trees: https://courses

His explanations are great and just wanted to +1 on the idea of range trees. Adding a reference here to a very lightweight read on range trees: https://courses.csail.mit.edu/6.851/spring10/scribe/lec03.pdf https://courses.csail.mit.edu/6.851/spring10/scribe/lec03.pd...