cp.nvim

⚠️ Warning: as of 27/09/25, CodeForces upgraded their anti-scraping technology and support is thus (temporarily) broken. I am actively researching a way around this.

The definitive competitive programming environment for Neovim

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

https://github.com/user-attachments/assets/50b19481-8e6d-47b4-bebc-15e16c61a9c9

Features

• Multi-platform support: AtCoder, Codeforces, CSES with consistent interface
• Automatic problem setup: Scrape test cases and metadata in seconds
• Rich test output: ANSI color support for compiler errors and program output
• Language agnostic: Works with any compiled language
• Template integration: Contest-specific snippets via LuaSnip
• Diff viewer: Compare expected vs actual output with precision

Optional Dependencies

• uv for problem scraping
• LuaSnip for templates

Quick Start

cp.nvim follows a simple principle: solve locally, submit remotely.

Basic Usage

1. Find a contest or problem on the judge website

2. Set up locally with :CP <platform> <contest> [<problem>]

   :CP codeforces 1848
   

3. Code and test with instant feedback and rich diffs

   :CP run
   

4. Navigate between problems

   :CP next
   :CP prev
   

5. Submit on the original website

Documentation

:help cp.nvim

See my config for a relatively advanced setup.

Similar Projects

• competitest.nvim
• assistant.nvim