On 02.03.14 there was a serious technical failure: Codeforces and related infrastructure hard drives have been corrupted. Unfortunately, it turned out that in contrast to all other components, the Codeforces database was not replicated properly. Polygon and Gym files were not injured. However, the Codeforces data has been significantly damaged.
We've rolled back the system to the state on February 7. It will remove 22 days of Codeforces life. Immediate efforts will be directed at the total exclusion of such situations. This is a very serious loss for me personally, which I can only blame myself.
Many thanks for all of you who supported us on a temporary Codeforces page. You helped much to find motivation in this difficult situation.
Currently the Gym is disabled. It will be opened back soon. We will return official contests and gym trainings with problems (but not results).
Data to be recovered:
- official contests with problems (but without results);
- public trainings in Gym;
- non-public trainings in Gym, but we do not know their owners — write me if you've prepared non-public training in Gym (not a mashup).
Sorry again for the inconvenience.