Excellent Book on Advanced Data Structures and Algorithms
This book draft by a competitive programmer has an excellent overview of advanced algorithms and data structures. It's dense and packed with information and covers many tips and techniques not found in any other "standard" algorithms text.
If you're looking to learn Competitive Programming and solve some of the more advanced challenges, go through it:
Web Page: https://cses.fi/book.html
Book Link: https://cses.fi/book.pdf