AtCoder Highlighter

Automatically highlights numbers, variables, and time/memory limits in AtCoder task statements

You will need to install an extension such as Tampermonkey, Greasemonkey or Violentmonkey to install this script.

You will need to install an extension such as Tampermonkey to install this script.

You will need to install an extension such as Tampermonkey or Violentmonkey to install this script.

You will need to install an extension such as Tampermonkey or Userscripts to install this script.

You will need to install an extension such as Tampermonkey to install this script.

You will need to install a user script manager extension to install this script.

(I already have a user script manager, let me install it!)

You will need to install an extension such as Stylus to install this style.

You will need to install an extension such as Stylus to install this style.

You will need to install an extension such as Stylus to install this style.

You will need to install a user style manager extension to install this style.

You will need to install a user style manager extension to install this style.

You will need to install a user style manager extension to install this style.

(I already have a user style manager, let me install it!)

Author
nsubaru
Daily installs
1
Total installs
2
Ratings
0 0 0
Version
1.3.2
Created
2026-02-16
Updated
2026-02-17
Size
11.7 KB
License
MIT
Applies to

## AtCoder Highlighter

A Userscript that automatically highlights **numbers** and **KaTeX variables** in AtCoder task statements to improve readability and prevent misinterpretation of constraints.

### Key Features
- **Automatic Highlighting**: Accurately highlights numerical values and variables within the "Problem Statement" and "Constraints" sections.
- **Enhanced Limits**: Significantly enlarges and colors the "Time Limit" and "Memory Limit" values for better visibility.
- **Fully Customizable**: Change highlight colors to your preference via the browser extension menu (Tampermonkey / Violentmonkey).
- **KaTeX Support**: Specifically designed to apply styles to variables within KaTeX mathematical expressions.

### How to Use
1. After installation, open any AtCoder problem page.
2. Click on your browser extension icon (Tampermonkey / Violentmonkey).
3. Access the menu (e.g., "Highlighter: Color for Numbers") to customize colors in real-time.

### Note
- Highlighting colors may not render correctly when used alongside other extensions such as dark mode managers.