Maciej Sikora enhanced the cpinitiative/usaco-guide repository by refining the documentation for advanced mathematical content, specifically clarifying expressions related to multiplicative functions. He focused on improving the accuracy and readability of the guide’s Advanced section, using Markdown and MDX to update the relevant documentation files. His technical writing and mathematics skills ensured that the revised content was both precise and accessible, which helped streamline onboarding for new users and reduced the likelihood of support queries. Although no bugs were fixed during this period, Maciej’s work contributed to the long-term maintainability and reliability of the project’s mathematical documentation.