Codeforces Un-definer

Toggle Codeforces #define macros inline.

Codeforces Un-definer is a small reading helper for Codeforces source code pages. It adds intuitive toggle buttons next to C++ #define macros and simple typedef declarations. When you click a button, the declaration line is crossed out and matching usages in the displayed code are rewritten inline. Features: - Toggle #define macros directly on Codeforces submission pages. - Toggle simple typedef aliases. - Red/green buttons for #define. - Orange/blue buttons for typedef. - Highlights lines that were changed. - Works locally in the browser. - Does not collect, store, or transmit user data. Codeforces Un-definer is designed to make macro-heavy competitive programming submissions easier to read. It is a reading helper, not a full C++ preprocessor, so very complex macros may not be expanded correctly. Codeforces Un-definer is an independent tool and is not affiliated with, endorsed by, or sponsored by Codeforces.