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Hi I am not sure if I am the right person to answer all your queries, but I will still try to answer them to the best of my knowledge, hopefully someone can correct me if I am wrong somewhere.
We were inspired by something similar that has been done with IOI archives as well.
Problem statements, tests(up to 2019-20) are already there. Solutions for most problems can also be obtained from ranklists itself. For testcases which aren't there, we considered 2 things:
a. we request some respectable CPers to help us out
b. we make a github repo where community could add issues for weak tests
CF has also had Hashcode type contests in the past, so maybe we could include them here in a similar manner as well. Afaik Hashcode data-sets are already available, so added plus.
I think writing scorers for Hash Code is quite a non-trivial task (and sometimes it might need a ton of computational resources, or the scorers for each subtask might be different). Do you know of a way to access all contest materials from the Hash Code side of things rather than writing things from scratch?
(un)rolling hash code 😔
AHC is directly inspired by topcoder's marathons.
While I agree with the sentiment that everything should be preserved. Especially the results. It's worth noting that HashCode problems are of a really bad quality and their educational value is next to none. Marathons/AHCs are way more useful. Sadly, marathons are already not preserved considering old marathons are inaccessible (including problem statements, results, solutions and forum posts).
Apologies for the misattribution, I had totally forgotten about marathons. Unfortunately I have never competed in one (and can say the same about a lot of other Hash Code participants), so Hash Code was the starting point for me and some tutorials that I remember seeing on related topics.
Thanks for the reference by the way — from your comment it seems that it is a good idea to also dig up old marathons by coordinating with the topcoder staff/authors.
Google owns Kaggle and was supposed to store old Hashcode contests there, I recall. That would be nice.
Thanks for having the same idea as my blog idea and representing it in a better way. Ofcourse people prefer some master posting this rather than a newbie! :cry: (referring to : https://codeforces.me/blog/entry/113194) But since this blog will do the same work, I am happy.
I didn't know about your blog, it seems we wrote about it at the same time. Given that the difference in publishing time was just 8 minutes, and that I had to collect all relevant links and list out all possible issues, it should be clear imo.
Anyway, I am glad to see that there are others who feel the same way.