⚡ CP Arena
A premium competitive programming judge for VS Code.
Compile, run, and test your solutions — all without leaving your editor.
✨ Features
| Feature |
Description |
| 🧪 Test Case Management |
Add, edit, and delete test cases right in the sidebar |
| ▶️ One-Click Run |
Compile and run all test cases with a single click |
| 📡 Competitive Companion |
Auto-import problems & test cases from Codeforces, AtCoder, and more |
| ✅ Verdict System |
Instant AC / WA / TLE / RE / CE verdicts with execution time |
| 📤 Quick Submit |
Copies your code to clipboard and opens the submission page |
| 🎨 Beautiful UI |
A sleek, dark-themed sidebar that feels native to VS Code |
🚀 Getting Started
Prerequisites
- VS Code
1.80.0 or later
- A C++ compiler (e.g.
g++) installed and available in your PATH
- (Optional) Competitive Companion browser extension for auto-importing problems
Installation
- Download the latest
.vsix file from Releases
- Open VS Code → Extensions →
⋯ menu → Install from VSIX…
- Select the downloaded file — done!
📖 Usage
Import a Problem
Install the Competitive Companion browser extension, navigate to any problem on Codeforces (or other supported judges), and click the ➕ icon. The problem and its test cases will automatically appear in the CP Arena sidebar.
Run Test Cases
- Open your
.cpp solution file — the sidebar will auto-focus
- Click ▶ Run All or press the status bar button
- Watch verdicts appear in real-time: ✅ AC, ❌ WA, ⏱ TLE, 💥 RE
Add Custom Test Cases
Click the ＋ Add Test Case button in the sidebar to create your own inputs and expected outputs.
Submit Your Solution
Click Submit — your code is copied to the clipboard and the judge's submission page opens in your browser. Just paste and submit!
⚙️ Configuration
All settings are available under Settings → Extensions → CP Arena.
| Setting |
Default |
Description |
cp-arena.general.defaultLanguage |
cpp |
Default language for new problems |
cp-arena.general.timeLimit |
3000 |
Time limit per test case (ms) |
cp-arena.general.companionPort |
10043 |
Competitive Companion listener port |
cp-arena.general.savePath |
(workspace) |
Default save path for problem files |
cp-arena.cpp.compileCommand |
g++-15 -O2 -std=c++23 |
C++ compilation command |
cp-arena.python.runCommand |
python3 |
Python interpreter command |
cp-arena.java.compileCommand |
javac |
Java compile command |
cp-arena.java.runCommand |
java |
Java run command |
cp-arena.rust.compileCommand |
rustc -O |
Rust compile command |
cp-arena.c.compileCommand |
gcc -std=c17 -O2 -Wall |
C compile command |
🛠 Supported Languages
- C++ — Full support with customizable compile flags
- C — Compile and run with GCC
- Python — Interpreted execution
- Java — Compile and run
- Rust — Compile and run
- Go — Compile and run
📋 Commands
| Command |
Description |
CP Arena: Run All Test Cases |
Compile and run all test cases |
CP Arena: Add Test Case |
Add a new empty test case |
CP Arena: Stop Execution |
Kill running processes |
CP Arena: Clear All Test Cases |
Remove all test cases |
CP Arena: Submit Code |
Copy code + open submission page |
🏗 Building from Source
# Clone the repository
git clone https://github.com/AashwatJain/cp-arena.git
cd cp-arena
# Install dependencies
npm install
# Build
npm run build
# Package as VSIX
npx vsce package
📜 License
This project is licensed under the terms specified in LICENSE.md.
Made with ❤️ for competitive programmers
