Kattis problem package format specification
active 2023-08-15 → 2026-05-20 (UTC)
Activity over time
Daily event counts in the loaded window
Line chart, 1010 days from 2023-08-15 to 2026-05-20. Pushes: 400 total, peak 55 in a day. Pull requests: 466 total, peak 54 in a day. Issues: 335 total, peak 20 in a day. Comments: 1,946 total, peak 105 in a day. Stars: 8 total, peak 1 in a day.
- Pushes
- Pull requests
- Issues
- Comments
- Stars
Stars, PRs, issues and forks are under-captured in the later part of this window. GH Archive progressively stopped capturing non-push events during 2026 — −95% or worse by the end of the window. Every series here except Pushes fades for that reason, so a decline above reflects the archive, not this repository. Pushes stay reliable throughout, so read them, and the contributor counts derived from them, as the real signal. Data health has the measurements.
Top contributors
Pushes, PRs, issues, reviews and comments — stars and forks excluded, so this is contribution rather than popularity
| Contributor | Contributions | Pushes | PRs | Comments |
|---|---|---|---|---|
| niemela | 1.8K | 285 | 277 | 745 |
| RagnarGrootKoerkamp | 301 | 17 | 10 | 210 |
| Tagl | 297 | 2 | 18 | 188 |
| evouga | 259 | 36 | 31 | 145 |
| Matistjati | 184 | 0 | 19 | 94 |
| eldering | 182 | 19 | 22 | 94 |
| thorehusfeldt | 164 | 1 | 3 | 142 |
| mzuenni | 136 | 0 | 12 | 97 |
| JoelNiemela | 118 | 30 | 32 | 28 |
| mpsijm | 76 | 0 | 6 | 58 |
| pehrsoderman | 67 | 9 | 15 | 15 |
| hairez | 64 | 0 | 4 | 32 |
| simonlindholm | 34 | 0 | 0 | 26 |
| Zazmuz | 30 | 0 | 3 | 17 |
| gkreitz | 26 | 0 | 3 | 20 |
| jsannemo | 20 | 0 | 0 | 20 |
| sjoqvist | 16 | 0 | 7 | 5 |
| ghamerly | 9 | 1 | 1 | 4 |
| meisterT | 6 | 0 | 2 | 4 |
| jeremykvlim | 2 | 0 | 0 | 1 |
Recent activity
Latest issues, pull requests and releases
- Issue#579Matistjati2026-05-20 00:19Consider adding tikz support
- Issue comment#575RagnarGrootKoerkamp2026-03-01 14:09Do not assume determinism
- Issue comment#575niemela2026-02-27 18:27Do not assume determinism
- Issue comment#575mzuenni2026-01-30 17:08Do not assume determinism
- Issue comment#575mzuenni2026-01-30 12:19Do not assume determinism
- Issue comment#575jsannemo2026-01-30 03:20Do not assume determinism
- Issue comment#575mzuenni2026-01-29 21:29Do not assume determinism
- Issue comment#575jsannemo2026-01-29 20:58Do not assume determinism
- Issue comment#575jsannemo2026-01-29 18:47Do not assume determinism
- Issue comment#575mzuenni2026-01-29 16:31Do not assume determinism
- Issue comment#575jsannemo2026-01-29 16:31Do not assume determinism
- Issue comment#575jsannemo2026-01-29 16:30Do not assume determinism
- Issue comment#575jsannemo2026-01-29 16:28Do not assume determinism
- Issue#546RagnarGrootKoerkamp2026-01-09 15:38`time_limit` should be consistent with `time_resolution`
- Issue comment#574niemela2026-01-03 19:16Make `problem.yaml` available to generators, validators, and various statements
- Issue comment#573niemela2026-01-03 18:45Constants: clarify type
- Issue comment#573RagnarGrootKoerkamp2026-01-03 14:34Constants: clarify type
- Issue comment#574thorehusfeldt2026-01-02 07:56Make `problem.yaml` available to generators, validators, and various statements
- Issue comment#574RagnarGrootKoerkamp2026-01-01 21:10Make `problem.yaml` available to generators, validators, and various statements
- Issue#530niemela2025-12-31 11:58Let's add some DO:s and DON'T:s for output visualizers
- Issue comment#574niemela2025-12-31 11:58Make `problem.yaml` available to generetors, validators, and various statements
- Issue comment#574thorehusfeldt2025-12-31 07:55Make `problem.yaml` available to generetors, validators, and various statements
- Issue comment#572niemela2025-12-30 22:13Consider renaming test case configuration file suffix
- Issue#549niemela2025-12-30 21:18Add support for contest or system specific notes
- Issue comment#549niemela2025-12-30 21:18Add support for contest or system specific notes
Totals cover only the window loaded into ClickHouse and count events, not GitHub's lifetime totals — 8 stars here means stars gained during the window, not the repo's star count.