Recently, i somewhat struggled to find answers in a particular language to finished contests problems until i stumble upon this blog post (created 5 years ago). So just sharing the link. :P

http://mirror.codeforces.com/blog/entry/211

The solution is to go to the problem set-> find that problem -> click on "Solved Column" and you get the page with options to filter the solutions :).

Wish you high rating (Y)