Contests Notifier

CF FetchCodes

CF FetchCodes: Learn from Friends' Solutions Stuck on a CodeForces problem? Unlock the collective wisdom of your circle! CF FetchCodes is a powerful browser extension designed to supercharge your Competitive Programming journey. It seamlessly integrates into the CodeForces problem page, allowing you to instantly view accepted solutions from your friends without ever leaving the tab. Whether you are looking for a different approach, an optimization hack, or just inspiration, CF FetchCodes brings your friends' code directly to you. 🚀 New in this Update (v25.12.07): Smart Session Management: No more confusing "Failed to load" errors! The extension now detects if your CodeForces session has expired and provides a direct "Login & Retry" button inside the list. - One-Click Retry: Fetch failed? You can now retry fetching a specific code instantly without refreshing the entire page. - Enhanced Error Feedback: Clearly distinguishes between Hidden/Private codes (which can't be viewed) and Auth Errors (which just need a quick login). ✨ Key Features: 👀 Instant Code Access: See a list of all friends who have accepted the current problem. ⚡ Lazy Loading: To save bandwidth and speed up the page, code is only downloaded when you click a specific friend. 🛡️ Robust Auth Handling: Seamlessly handles background session timeouts, ensuring you can continue browsing friends' codes even if your login cookie expires. 🎨 Native Syntax Highlighting: Read code comfortably with coloring that matches the CodeForces environment (Supports C++17/20, Python 3, Java, and more). 🔗 Quick Navigation: Includes direct links to the original submission and your friend's profile. 📊 Progress Status: A real-time progress bar shows you the status of checking your friends' submissions. Safety-First Architecture: Uses "Human-Like" delays and randomized jitter to strictly adhere to CodeForces API limits and keep your account safe. 🛠️ How to use: Install CF FetchCodes. - Navigate to any CodeForces problem page. - Look for the "→ Accepted Codes of Friends" box in the right sidebar. - Click "Show Codes". - Click on any friend's name in the list to expand and study their solution! ⚠️ Important Notes: - Contest Integrity: To maintain fair play, this extension does not work during live contests. It is designed for practice and upsolving. - Privacy: You can only view submissions that are public. Private or gym submissions are restricted by CodeForces API rules. 🤝 Contribute & Support CF FetchCodes is an open-source initiative built by the community, for the community. We love pull requests! Found a bug or have a feature request? Want to improve the code? 👉 Head over to our GitHub: https://github.com/sa-paul/CF_FetchCodes 🔮 Upcoming Features: We are constantly coding to make this tool better. Here is what is in the pipeline: 🌙 Dark Mode: A sleek dark theme for late-night coding sessions. 🎨 Custom Themes: Choose your favorite editor color scheme. 🤖 AI Code Explainer: An AI companion to break down complex logic in your friends' code. 📜 Release Notes Version 25.12.07 (Stability & Auth Fixes) - Fix: Resolved the "Failed to load code" issue reported by users. - New: Added a "Session Expired" state with a smart Login & Retry button. - New: Improved detection logic to differentiate between locked/private submissions and connection errors. - Improvement: The "Retry" button now re-fetches code specifically for that user without reloading the whole list. Version 25.11.21 (Major Overhaul) - UI Redesign: Replaced the pop-up modal with a sleek, scrollable Accordion list. - Stable System: Implemented "Human-Like" delays and randomized jitter. - Performance: Added a caching layer; code is now stored in memory after the first fetch. - Bug Fix: Fixed an issue where the extension interfered with CodeForces' native hover events. Version 0.1.1 Security: Enhanced compliance with Manifest V3 policies for better security and stability. Version 0.1.0 Initial Launch: Added basic code fetching, syntax highlighting, and sidebar integration.

CPH Submit

Codeforces Submit add-on for Competitive Programming Helper. Codeforces Submit add-on for Competitive Programming Helper. This open-source extension allows you to submit your solutions to Codeforces problems from VS Code with the click of a button. See https://github.com/agrawal-d/cph for details.

Carrot

Rating predictor for Codeforces For an active contest: Carrot calculates rating changes according the current standings when you open the ranklist, and displays them in a new column. Carrot also adds a column showing the delta required to rank up. The delta calculation is done in real time a̶n̶d̶ ̶i̶s̶ ̶1̶0̶0̶%̶ ̶a̶c̶c̶u̶r̶a̶t̶e̶ (see note below). For a finished contest: Carrot displays the final deltas of each contestant in a new column and shows their rank change, if any, in an adjacent column. For both active and finished contests, Carrot displays a column for performance, the rating at which the delta would be zero. Each of Carrot's columns can be toggled according to your preference, so as to not clutter the ranklist more than you would like. Carrot communicates only with the Codeforces API and runs entirely in the browser. Note: Since all required data is fetched and processed in the browser, Carrot is not ideal if you have a low data cap on your network. If so I recommend using CF-Predictor instead: https://codeforces.com/blog/entry/50411 Note: The rating calculation is no longer 100% accurate since the new rating system was introduced. See https://github.com/meooow25/carrot/pull/18 for details.

Codeforces Lite - Dark Mode & Code Runner

Provides dark theme and code runner for Codeforces Improve your Codeforces experience with Codeforces Lite, a must-have Chrome extension for competitive programmers. ➤ Customizable Dark Theme & UI Enhancement: Enjoy a sleek dark mode that reduces eye strain and a refined, intuitive user interface for smoother navigation and coding. ➤ Editor from VS Code (Monaco): Write, time, and submit code directly on Codeforces with language customization, auto-indentation, and an integrated timer and customizable editor themes. ➤ Live Code Execution: Run your code instantly with real-time results, detailed metrics, and comprehensive error messages with support of Judge0. ➤ Custom Templates: Automate repetitive setups with personalized code templates for faster problem-solving. Developed by Maanas Sehgal and Devendra Suryavanshi, Codeforces Lite is designed to boost your coding efficiency and streamline your competitive programming workflow. If you liked the extension, please drop a 5⭐ review. Github: https://github.com/MaanasSehgal/Codeforces-Lite