CodeSmash Arena

A CodeSmash workspace for Codeforces. Read problems, write solutions, and manage testcases side by side.

CodeSmash Arena brings a focused coding workspace to Codeforces. Read problem statements, write and run code, and manage sample and custom testcases side by side. Submit solutions directly to Codeforces and follow submission progress, verdicts, runtime, and memory usage without leaving the workspace. Features include: - Run code and compare outputs with expected results. - Automatically save your code, language templates, and problem notes. - Sign in with Codeforces to sync templates and notes across devices. - Connect GitHub to automatically push accepted solutions to your linked repository. - Download problem statements, testcases, syntax-colored code, and notes as a PDF. - Customize editor preferences, resize panels, and use keyboard shortcuts. - Browse submission history and search problems by rating, topic, and status. Languages that support submission only are clearly labeled. Execution runtimes may differ from the selected Codeforces submission compiler. Data use: Running code sends your source code and testcase inputs for processing. Submitting sends your solution to Codeforces using your signed-in session. Account features store your templates and notes, and GitHub syncing uploads accepted solutions to your selected repository. CodeSmash Arena is a CodeSmash product and is not affiliated with Codeforces, LeetCode, or Judge0.