# kth-competitive-programming/kactl

> KACTL is KTH's ICPC team reference document: 25 pages of copy-pasteable C++ algorithms and data structures for programming contests, built from LaTeX sources in the repo.

- Magnitude: 1.4 out of 10 — Steady
- Stars: 3,547 total · +2 stars today, ≈ 4 by evening
- Star trust: star growth looks organic
- Category: Learning & lists · Language: C++ · Created: 2017-05-28 · Last push: 2026-10-03
- GitHub: https://github.com/kth-competitive-programming/kactl · Page: https://gitnova.dev/en/r/kth-competitive-programming/kactl

## Useful for

- Assemble a personal team notebook by editing chapter.tex and running make kactl
- Look up a tested implementation of a specific algorithm during a contest
- Run stress tests to verify an algorithm's correctness before adding it

## Why it’s here

- 2 stars so far today, about 4 expected by the end of the day.
- GitHub Trending C++ today: #6, +10 stars.

## Star trust

Star growth looks organic.

Star-trust labels are heuristics based on the repository’s behavior, not a check of every stargazer.

## Numbers

- Forks: 1,004
- Issues and pull requests: 323
- Watchers: 49
- Average over the last week: 5 per day
- Usual pace: 2 per day
- Stars in the last hour (measured): 0

## Stars per day, last 30 days (oldest → newest, today is partial)

2026-09-04 … 2026-10-03: 3, 1, 2, 2, 3, 0, 0, 2, 1, 1, 3, 0, 0, 2, 2, 1, 1, 0, 3, 1, 2, 3, 5, 4, 6, 4, 1, 3, 10, 2

## Spotted in now

- GitHub Trending C++ today: #6, +10 stars

## More in this category

1. **NuvexNetwork/nuvex-docs** — 5.7 · Early signal · Learning & lists · MDX · +36 stars today, ≈ 62 by evening
   The Nuvex documentation site built with MDX, including architecture decision records (ADRs). The protocol, website, and off-chain services live in separate repositories.
   Full card: https://gitnova.dev/en/r/NuvexNetwork/nuvex-docs.md
2. **LAMDA-NeSy/Research-Starter-Kit** — 4.0 · Breakout · Learning & lists · +235 stars today, ≈ 358 by evening
   A guide to the basics of doing research and writing papers for students new to a research group: how to find and read papers, come up with ideas, present, and prepare publications.
   Full card: https://gitnova.dev/en/r/LAMDA-NeSy/Research-Starter-Kit.md
3. **public-apis/public-apis** — 3.9 · Steady · Learning & lists · Python · +133 stars today, ≈ 226 by evening
   A community-curated list of free public APIs across dozens of categories, from animals and anime to finance, geocoding and weather. Aimed at developers looking for a ready-made API for a prototype or product.
   Full card: https://gitnova.dev/en/r/public-apis/public-apis.md
4. **rohitg00/ai-engineering-from-scratch** — 3.8 · Cooling · Learning & lists · Python · +187 stars today, ≈ 290 by evening
   Open-source AI engineering curriculum: 523 lessons across 20 phases (~342 hours) in Python, TypeScript, Rust and Julia, where every lesson ships a reusable artifact such as a prompt, skill, agent or MCP server.
   Full card: https://gitnova.dev/en/r/rohitg00/ai-engineering-from-scratch.md
5. **cdyforever/how-to-live-better** — 3.8 · Peaking · Learning & lists · HTML · +139 stars today, ≈ 235 by evening
   A single-file HTML reading page for the open book "High Cost-Performance Life Guide" — 528 tips across 32 sections, searchable, offline-capable, zero dependencies.
   Full card: https://gitnova.dev/en/r/cdyforever/how-to-live-better.md

---

Magnitude (0–10) measures how fast and how unusually interest in a repository is growing right now. It is not a quality score.
Days are UTC. “So far today” is a fact; “expected by the end of the day” is a forecast.
Summaries and use cases are written by an LLM (DeepSeek V4.1 Flash) from the README and may be inaccurate: verify specific claims (benchmarks, speed, hardware) in the repository itself.
Data as of 2026-10-03 15:15 UTC, updated every 30 minutes.