CP Pilot
Competitive programming in VS Code. Import problems from Codeforces, AtCoder, CodeChef, CSES, USACO and 100+ judges with one click, test your solution locally, submit, and track your CSES progress without leaving the editor.
Preview release. Things may be rough around the edges. Please report anything odd; feedback shapes what comes next.
Features
⚡ One-click import from any judge
Click the ➕ of the Competitive Companion browser extension on a problem page. CP Pilot creates the solution file (from your template), saves the sample tests, and opens it.
- Whole contests open as tabs (A, B, C…) with A focused.
- File I/O problems (USACO, some Codeforces) just work: the input file is provided and the output file is checked.
- Re-importing keeps your code. A different problem with the same name gets its own file.
✅ Local judge
Press Ctrl+Alt+R (Cmd+Alt+R on macOS) or ▶ in the editor title.
- Verdicts per test: AC, WA, TLE, RE and compile errors, with run time, your output and stderr.
- Add, edit and delete tests in the Judge panel.
- C++, C, Python, Java, Rust, Go, JavaScript out of the box. Unchanged code isn't recompiled.
🚀 Submit
| Judge |
How |
| CSES |
Fully from VS Code, with live grading progress and per-test verdicts. Uses the official CSES API; you approve the login in your browser, so CP Pilot never sees your password. |
| Codeforces |
One click with the cph-submit browser add-on (setup). Without it, your code is copied and the submit page opens. |
| AtCoder, CodeChef |
Your code is copied and the submit page opens with the problem selected: paste and submit. |
| USACO |
The problem's upload form opens and your file's path is copied: paste it into Choose File. |
CP Pilot warns you before submitting if local tests failed on the last run.
📊 CSES problem browser
All 400 CSES problems in the sidebar by category, with ✅ solved / ❌ attempted status, progress like Dynamic Programming 14/19, search, and a hide-solved toggle. It updates as soon as a submission is accepted. Click a problem to open it on cses.fi.
Getting started
- Install CP Pilot, and Competitive Companion in your browser.
- Open a folder for your solutions in VS Code. The status bar shows
CP Pilot :27121 when it's ready.
- Open any problem page and click Competitive Companion's ➕.
- Write your solution, press Ctrl+Alt+R, then Submit in the Judge panel.
You need the compiler or interpreter for your language installed (e.g. g++, python3, java) and on your PATH.
Using CPH or another CP extension?
Competitive Companion sends problems to port 27121 by default, which CPH also uses (and CPOS uses 27122). If CP Pilot shows ⚠ in the status bar, set cpPilot.companionPort to a free port such as 27150 and add that port under Custom ports in Competitive Companion's options.
One-click Codeforces submit
- Install cph-submit in your browser.
- cph-submit only talks to port
27121, so CP Pilot needs that port: disable CPH (or don't run both) and keep cpPilot.companionPort at 27121.
- Keep a browser window open, click Submit on Codeforces, and the add-on fills in and submits the form in your logged-in browser.
Settings
| Setting |
Default |
What it does |
cpPilot.companionPort |
27121 |
Port Competitive Companion sends problems to |
cpPilot.defaultLanguage |
cpp |
Language of new solution files |
cpPilot.templateFile |
|
Template copied into new solution files |
cpPilot.openContestProblems |
all |
Contest imports: open every problem, or first only |
cpPilot.languageCommands |
{} |
Override compile/run commands, e.g. { "cpp": { "compile": "g++ -std=c++20 -O2 -DLOCAL -o ${exe} ${file}" } } |
cpPilot.codeforces.languageIds |
CPH's defaults |
Codeforces compiler per language for one-click submit, e.g. { "cpp": 89 } for G++20 |
cpPilot.cses.languages |
|
CSES language/version per file type, e.g. { "python": { "option": "CPython3" } } |
Default commands: g++ -std=gnu++17 -O2, gcc -std=gnu11 -O2, python3 (python on Windows), java File.java (Java 11+), rustc -O, go build, node. Tests and binaries live in a .cp-pilot/ folder next to your solutions; add it to .gitignore if you keep solutions in git.
Commands
| Command |
Shortcut |
| CP Pilot: Run Tests |
Ctrl+Alt+R |
| CP Pilot: Stop Tests |
|
| CP Pilot: Submit Solution |
|
| CP Pilot: Log In to CSES / Log Out of CSES |
|
| CP Pilot: Search / Refresh CSES Problems |
|
| CP Pilot: Restart Competitive Companion Listener |
click the status bar item |
CSES language notes
CSES picks the language from the file extension (versions):
- Python runs as PyPy3 by default.
- C++ defaults to C++20.
- Java: CSES needs the file named after the class; CP Pilot sends your public class (or the one with
main) as <Class>.java.
- Node.js: read input with
readline, as in CSES's own example. fs.readFileSync input gets WRONG ANSWER on CSES even when it works locally.
- Go isn't available on CSES.
Privacy
CP Pilot has no telemetry. It listens on 127.0.0.1 only (for Competitive Companion and cph-submit) and talks to cses.fi for CSES features. Your CSES login token is kept in VS Code's secret storage. Running tests executes your code, so it's disabled in untrusted workspaces.
Feedback
This is an early release and I'd love to hear how it works for you:
Contributing
See CONTRIBUTING.md for building and running from source.
License
MIT
