All CEOI contests from 2005 to 2018 are now available for practice here:
You can either join a virtual contest (5 hours like the original contest) or just upsolve tasks.
| # | User | Rating |
|---|---|---|
| 1 | jiangly | 3810 |
| 2 | Benq | 3676 |
| 3 | Kevin114514 | 3655 |
| 4 | maroonrk | 3463 |
| 5 | strapple | 3447 |
| 6 | Um_nik | 3387 |
| 7 | heuristica | 3322 |
| 8 | turmax | 3317 |
| 9 | tourist | 3307 |
| 10 | jiangbowen | 3291 |
| # | User | Contrib. |
|---|---|---|
| 1 | Qingyu | 156 |
| 2 | nik_exists | 150 |
| 2 | maspy | 150 |
| 4 | Um_nik | 141 |
| 5 | Errichto | 139 |
| 6 | adamant | 137 |
| 7 | AmShZ | 135 |
| 8 | BledDest | 132 |
| 9 | maroonrk | 131 |
| 10 | qwexd | 129 |
All CEOI contests from 2005 to 2018 are now available for practice here:
You can either join a virtual contest (5 hours like the original contest) or just upsolve tasks.
| Name |
|---|



Are editorials of these contests available?
For some contests there are editorials available on their websites.
Oh wow, I can now test how I would have done in CEOI 2012 which I missed since it clashed with IMO xD
That's awesome!