why in codechef , there isnt any tool which is in spoj and which classifies each question i.e. the category of question (like dp easy,kmp ,medium etc etc ) is written against each question . more importantly it is written for each question , which i couldnt find in codechef . tags dont seem to cover each question which makes it hard to solve a bunch of question over a topic like stl or dp .
The Codechef tags feature was introduced very recently and not all questions have been tagged so far. Hopefully they will add tags for all the questions soon.
Currently the only alternative is to search the topic in the discussion forum and using tags mentioned in the editorials of questions to find the right questions.