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!

First of all, Merry Christmas, Codeforces!!!

In various international contests (eg IOI) there is such a type of problem as problems with open tests. Their essence lies in the fact that the participant is given an archive of tests, and in response they need to send not a code, but an archive with answers to these tests. These answers can be received in any way, even by hand, the only condition is that this must be done before the end of the contests. Points are awarded according to some formula, based on how good the answer is.

Similar contests have already been held at Codeforces: in the problems it was necessary to send a text file containing the answer. An example of such a contest: ICPC Challenge 2020: Practice. However, it seems that such contests cannot be held by ordinary Codeforces users, since Polygon does not allow creating problems with open tests.

I consider this a serious flaw. Polygon is a very powerful and versatile platform for developing problems, but the ability to create problems with open tests, in my opinion, is really lacking. It would be really great if MikeMirzayanov would implement this.

P.S. Maybe the ability to add tasks with open tests was available all this time, and I accidentally missed it? If this already exists on Polygon, please write about it in the comments.

As you know, Codeforces recently added the ability to scroll through the user's rating history. I decided to take this opportunity to find out how long this wonderful service plans to exist.

To do this, I went to my page, looked at my rating

Next, I began to zoom out as much as possible. At one point, I got something that looked like the flag of Indonesia.

After zooming out a bit more and scrolling a bit to the right, I found that at some point new divisions stop being added. To be more precise, this is about the 251st millennium:

It seems that we are close to a solution! It remains only to zoom in to see a more accurate value.

So, 275760 is, apparently, the last year of Codeforces' existence! Let's zoom in even more to get the accuracy up to a month...

Let's continue to improve the accuracy...

Bingo! Codeforces will cease to exist on September 13, 275760. I don't think you should worry at the moment. The date will not come quite soon, because no exiting time calculator accepted such a year.

Please write in the comments what code you would like to save in case of Codeforces closure!