blog

elsewhere

Zhihu Algorithm Study Notes: Wavelet Matrix for Range K-th Smallest Queries (Chinese) Zhihu Building a Competitive Programming Library from Scratch: Implementing a ZKW Segment Tree (Point Updates) (Chinese) Zhihu C++20 Features You Might Use in Competitive Programming (Chinese) AcWing Basic Mo's Algorithm Template + Three Practice Problems (Chinese) AcWing Sqrt Decomposition Template: Implementation Ideas + Example Applications (Chinese)