Codeforces Global Round 10 should be unrated for the following reasons:

1. Long queue: the queue was really long (up to 20 minutes)! Imagine submitting a solution for problem A at 0:05 and receiving the verdict "runtime error on test 2" at 0:25 because of a silly out of bounds: it's really unfair!
2. Weak pretests on problems A and B: this is a critical issue of the contest, because more than 20000 submissions on problems A and B passed the pretests! Among these, about 1000 solutions were hacked and more than 1000 solutions failed system tests (more than 2000 people have been affected). Even the model solution was wrong!
3. Also, the leaderboard has been messed up by the enormous number of hacks (hacking 6 people can be worth more than a problem); hacks are unfair because not everyone has the same chances, since some rooms have more wrong solutions than others.
4. Wrong order of problems: the problem F was extremely easy, in fact it was proposed as a B (it's written on the editorial). So, people that were not able to solve E had a significant advantage, since they had the opportunity to try the easy problem F and get a lot of points.

It's obvious that Codeforces Global Round 10 should be unrated! Sign this petition!!!