cp.nvim

The definitive competitive programming environment for Neovim

Scrape problems, run tests, and debug solutions across multiple platforms with zero configuration.

Screen.Recording.2025-10-24.at.9.29.14.PM.mov

Features

• Multi-platform support: AtCoder, CodeChef, Codeforces, USACO, CSES, Kattis
• Online Judge Integration: Submit problems and view contest standings
• Live Contest Support: Participate in real-time contests
• Automatic setup: Scrape test cases and metadata in seconds
• Streamlined Editing: Configure coding view, edit test cases, stress-test solutions, run interactive problems, and more
• Rich output: 256 color ANSI support for compiler errors and program output
• Language agnosticism: Configure with any language
• Security: Passwords go untampered

Installation

Install using your package manager of choice or via luarocks:

luarocks install cp.nvim

Dependencies

• GNU time and timeout
• uv or nix for problem scraping

Quick Start

1. Find a contest:

:CP pick

2. View the problem:

:CP open

3. Code and test

:CP run

4. Navigate between problems

:CP next
:CP prev
:CP e1

5. Debug and edit test cases

:CP edit
:CP panel --debug

6. Submit:

:CP submit

7. View contest standings:

:CP open standings

Documentation

:help cp.nvim

See my config for the setup in the video shown above.

Motivation

I could not find a neovim-centric, efficient, dependency-free, flexible, and easily customizable competitive programming workflow that "just works"--so I made it myself. I conferenced with top competitive programmers at Carnegie Mellon Univerity and the University of Virginia and covered their (and my) pain points:

• Scraping: contests are automatically loaded asynchronously
• Test Case Management: test case editor (:CP edit)
• UI: both run and panel layouts cover common formats
• Extensibility: snippet plugins, compilation, etc. are left to the programmer

Similar Projects

• competitest.nvim
• assistant.nvim