| # | User | Rating |
|---|---|---|
| 1 | tourist | 3993 |
| 2 | jiangly | 3743 |
| 3 | orzdevinwang | 3707 |
| 4 | Radewoosh | 3627 |
| 5 | jqdai0815 | 3620 |
| 6 | Benq | 3564 |
| 7 | Kevin114514 | 3443 |
| 8 | ksun48 | 3434 |
| 9 | Rewinding | 3397 |
| 10 | Um_nik | 3396 |
| # | User | Contrib. |
|---|---|---|
| 1 | cry | 167 |
| 2 | Um_nik | 163 |
| 3 | maomao90 | 162 |
| 3 | atcoder_official | 162 |
| 5 | adamant | 159 |
| 6 | -is-this-fft- | 158 |
| 7 | awoo | 156 |
| 8 | TheScrasse | 154 |
| 9 | Dominater069 | 153 |
| 10 | nor | 152 |
About halfway through the contest, this message kept appearing: 
Even m2.codeforces.com isn't safe: 
Note: My internet connection is not broken Did this affect everyone? Anyways, this is extremely annoying and should be fixed as soon as possible. I had to reload my pages many times before Codeforces began functioning again.
I think it's an attempt from Codeforces to redirect you to alt servers in case of the main server being attacked. I think when you have a bad internet connection or something like, it might think that Codeforces is down while it's actually not.
I think Mike commented on the issue before.