link: https://someonecode179.github.io/codeforces-/

Key Features: Precision Tag Filtering: Easily input the tags you want to practice (e.g., dp, math) and strictly exclude the topics you want to avoid (e.g., geometry, constructive algorithms).

Custom Difficulty Range: Set your desired Minimum and Maximum ratings to ensure the problems match your current skill level.

Smart Handle Integration: Enter your Codeforces handle to seamlessly integrate your user data. You can instantly filter out and hide problems you have already solved (AC) to save time.

Spoiler-Free Mode: Toggle the "Hide Tags" option to remove the tags column from the search results, preventing unwanted hints before you attempt a problem.

Popularity Sorting: The results are automatically sorted by the number of successful solves, bringing the most well-known and high-quality problems to the top of your list.

This tool is entirely client-side, meaning it fetches data directly from the official Codeforces API to your browser, ensuring fast and reliable performance without requiring any account registration or installation.

Hi everyone,

I have a question about searching problems in the Problemset.

Sometimes I want to practice problems while avoiding certain topics/tags. For example, I may want to solve problems of a particular difficulty range but exclude some tags that I'm not interested in practicing at the moment.

I know that Codeforces allows filtering by tags, but is there a way to search for problems while excluding specific tags?

If not, how do you usually find problems that avoid certain topics? Do you use any built-in filters, mashups, or external tools?

Any suggestions would be appreciated. Thanks!

How to add someone join mashup contest or group by link ? Thanks.