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
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)
I am just adding up your answer.In case if you are finding difficulty in viewing solution in you mobile phone or tablet...then just click on the submission Id just like you double click on you PC...then you will see source code which is not properly aligned 2) click on the hash (#) sign there,now you will be able to see the full source code properly.
I trued, but it did not work from my phone :P
My phone :
just sell this antique phone in any pawn shop,you will get mac book with that money