They are in Russian. I wrote them 10 years ago, as a university project. I didn't speak much English back then, but even if I did, my fellow students wouldn't.
I haven't been writing in C++ in 6 years, I think, so I probably forgot everything already :). But maybe, who knows :)
We're a place where coders share, stay up-to-date and grow their careers.
We strive for transparency and don't collect excess data.