When I go to jiangly's profile, his rating graph displays a mysterious contest with what seems to be his highest rating on January 1st, 1970, the start of Unix time.

After I double click on the graph, it magically goes away. It comes back consistently after refreshing.

This only happens on his profile. Might have something to do with the fact that he has the highest max rating of all.

I noticed this issue after rating rollbacks started. Is it just me or is this a bug?

Today I saw that there were 3 solves in total to 2061H2 (which no one solved in contest) so I decided to take a look at how people's codes for such hard problems looked like

It turns out that all 3 submissions are almost exactly the same! They only differ in comments and other slight things.

There's now way that 3 people would write the exact same code for this problem, right? So why do people copy codes for training purposes??? They are only harming themselves...

https://codeforces.net/problemset/status/2061/problem/H/

Submissions (in order of time submitted): 302352696, 302472869, 302481216