cf-cli

A terminal session for Codeforces. Fetch a problem, write your solution, run the samples — without leaving the shell.

Setup

Requires Bun, python3, and g++.

bun install
bun run dev

Commands

Command	What it does
/problem <id>	Fetch problem from Codeforces, scaffold solution file, store samples
/lang <py|cpp>	Switch language (scaffolds new file if needed, never overwrites existing code)
/test	Run stored samples against your solution
/status	Show current problem, language, and file
/help	List commands
/quit	Exit

Example session

❯ /problem 4A
  ready 4A: A. Watermelon
  file: 4A.py
  samples: 2

❯ /lang cpp
  language set to cpp
  file: 4A.cpp

❯ /test
  sample 1: PASS
  sample 2: PASS
  2/2 passed

The prompt shows your active context — [4A · CPP] ❯ — and Tab completes commands.

Contributing

Bug reports and pull requests are welcome at pol-cova/cf-cli.

If you're adding a feature, open an issue first so we can agree on the direction before you spend time on it.

bun install
bun run dev   # run with file watching
bun test      # run tests

How it works

• Problems are fetched live from codeforces.com and parsed from HTML
• Samples are stored under .cf-cli/ and reused on /test
• Python runs via python3, C++ compiles with g++ -O2 then runs the binary
• Solution files are created once and never overwritten on language switch

License

MIT — see LICENSE