It’s pretty well known that North Korean students write some decent code and have won some competitions against other colleges: https://www.mic.com/articles/186412/north-korean-college-coders-beat-stanford-university-in-a-2016-competition-heres-why-that-matters

The other day some North Korean social media accounts started tweeting out the following link showing their standings online: https://www.codechef.com/ratings/long-challenge

I started looking into it more and it looks like at least the for some of the online competitions it’s pretty well known that users are cheating on their submissions:

1. https://codeforces.com/blog/entry/43880

2. https://codeforces.com/blog/entry/14150

3. https://www.quora.com/Why-are-some-North-Koreans-doing-so-well-on-CodeChef-Do-they-even-have-proper-access-to-the-Internet