ALL OFFICIAL TASKS (21 SEP 2026)400
CHAPTER-GATED TASKS—
FURTHER STUDY TASKS—
IMPLEMENTED LOCALLY0 / 400
ACCEPTED ON CSES0 / 400
How to use: Finish chapter N; attempt that chapter’s newly unlocked tasks while continuing your reading. Keep earlier chapters open as your backlog. Tick Implemented when your own VS Code solution is saved and Accepted only after CSES accepts it. A chapter indicates necessary core theory, not that every contest insight is provided verbatim in the book. Anything depending on a clearly unintroduced algorithm is kept in Further study beyond CPH, not silently forced into a book chapter.
⏳ Matching task names to official CSES statement links…
Reading-order overview · 30 chapter rows · click a chapter to jump
| CPH checkpoint | New CSES tasks | Running total |
|---|
No problems match the current search and filters.
Coverage is frozen to the 400 tasks listed on the official CSES Problem Set on 21 September 2026. If CSES adds tasks, the roster must be updated. Links are resolved by matching all 400 titles against a public CSES title/ID index, then constructed as https://cses.fi/problemset/task/ID/; its completeness is checked on load. Your checkboxes are saved in this browser only (not synchronized with your CSES account). Link-index data source.