Many thanks to Codeforces for adding this statistic! To be honest, I also like to admire such "tiles" on github. And, of course, it gives motivation to solve more! For example, to finish 200 tasks, solve the maximum number of days in a row...

I would like, however, to add the ability to switch years, as it now works on GitHub/GitLab. I think this way you could compare your productivity over the years. Nevertheless, thanks to Codeforces for such a feature!