What rating is Expert on Codeforces?
1600–1899 is Expert (blue). The 1600 CP-31 sheet is the first of the three Expert-band sheets.
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Priyansh Agarwal
1600 Rated: CP-31 Sheet
Curated by Priyansh Agarwal, ICPC World Finalist and AIR 1 in Google Kick Start, this sheet features all essential 1600-rated Codeforces questions. With a Master (India Rank 34) on Codeforces and 4000+ students taught, Priyansh’s expertise ensures that this sheet will help you sharpen your competitive programming skills and make steady progress
31 problemscompetitive
Who the 1600 rated sheet is for
1600 on Codeforces is Expert level. Strong Specialists pushing for Expert, who solve Div. 2 C fast and D occasionally.
What these problems lean on: DP on arrays and subsequences, Trees, Combinatorics, Binary search + greedy, Data structures (sets, heaps).
The usual wall at 1600: Problems combine two ideas — binary search plus a greedy check, or DP plus a data structure — and spotting either half alone is not enough.
How to practise it: After each problem, write down the two ideas it combined. Seeing that list grow is how you start recognising the pairing in a contest.
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Overall progress
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Medium
| Status | Problem | Solve | Practice | Revision | Level | |
|---|---|---|---|---|---|---|
| 1. | Partitioning the Array |  | Medium | |||
| 2. | Good Triples | | Medium | |||
| 3. | Decreasing String | | Medium | |||
| 4. | To Become Max | | Medium | |||
| 5. | Tracking Segments | | Medium | |||
| 6. | Round Dance | | Medium | |||
| 7. | Hits Different | | Medium | |||
| 8. | Shocking Arrangement | | Medium | |||
| 9. | Triangle Coloring | | Medium | |||
| 10. | Equal Frequencies | | Medium | |||
| 11. | Flexible String | | Medium | |||
| 12. | Interesting Sequence | | Medium | |||
| 13. | Sending a Sequence Over the Network | | Medium | |||
| 14. | Meeting on the Line | | Medium | |||
| 15. | Split Into Two Sets | | Medium | |||
| 16. | Fixed Point Guessing | | Medium | |||
| 17. | Maximum Product Strikes Back | | Medium | |||
| 18. | Make Them Equal | | Medium | |||
| 19. | Keshi Is Throwing a Party | | Medium | |||
| 20. | Say No to Palindromes | | Medium | |||
| 21. | Erase and Extend (Easy Version) | | Medium | |||
| 22. | Parsa's Humongous Tree | | Medium | |||
| 23. | Planar Reflections | | Medium | |||
| 24. | Advertising Agency | | Medium | |||
| 25. | Row GCD | | Medium | |||
| 26. | Chocolate Bunny | | Medium | |||
| 27. | Good Subarrays | | Medium | |||
| 28. | Array Walk | | Medium | |||
| 29. | Orac and LCM | | Medium | |||
| 30. | Linova and Kingdom | | Medium | |||
| 31. | Kuroni and Impossible Calculation | | Medium |
Frequently asked
How long does the 1600 CP-31 sheet take?
Most people need 45–90 minutes per problem at this level, so budget 30–45 hours for all 31, with editorial reading.
Is there a PDF of 1600 Rated: CP-31 Sheet to download?
There is no PDF here, and you do not need one. All 31 problems are listed in full on this page, free and without an account — and unlike a PDF the list remembers what you have ticked off, so you are not re-reading a static file to work out where you stopped. Use your browser's print view if you want it on paper.
How do I track my progress on 1600 Rated: CP-31 Sheet?
Tick a problem on this page and it stays ticked. Progress saves in your browser straight away with no account, and the counts update per section so you can see which parts of 1600 Rated: CP-31 Sheet you have actually covered. Signing in with Google syncs it across devices.
How many problems are in 1600 Rated: CP-31 Sheet?
- Every one is listed on this page and tickable as you solve it.
How long does 1600 Rated: CP-31 Sheet take to complete?
At roughly 25 minutes a problem — reading it, solving it and writing the approach down — 31 problems is about 13 hours, or 1 weeks at ten hours a week. Treat that as a planning figure rather than a promise; the first pass through an unfamiliar topic is always slower.
Is the 1600 Rated: CP-31 Sheet tracker free?
Yes, completely, and no account is needed. There is no paid tier and nothing is held back — the sheet itself is by Priyansh Agarwal, and this is a free tracker for it.
Should I finish 1600 Rated: CP-31 Sheet or switch between sheets?
Finish one. Sheets overlap heavily, so working several in parallel mostly means re-solving the same problems while never completing a full topic sweep. If you are not sure this is the right one for the time you have, the sheet comparison page puts the options side by side with hour estimates.