Hello, Codeforces.

Today, my friend and teammate jiangshibiao was going to register for the round, but discovered that his Codeforces account was hacked and the avatar as well as the password has been changed. The email could be changed too, but he is unsure right now. I looked at the avatar and immediately noticed it was the same as im0qianqian's avatar, who made a blog post about his account being hacked too.

I think probably the same hacker did it, and there may be more victims. So I would like to invite MikeMirzayanov to look into the issue and possibly help my friend get his account back. Also, I would advise users who have weak passwords to change the password immediately.

Also, jiangshibiao and me are onsite at Petrozavodsk Camp right now, so maybe someone can meet him in person if needed to verify his identify.