Tomorrow in Hungary starts CEOI 2012 — Central-European Olympiad in Informatics. It's very interesting contest, problems are quite hard in comparsion to other school olympiads. There will be internet-contest on same problemset: first tour at 9th July, second at 11th July; both tours will start at 08:00 UTC.
Rules — like on old IOI with test groups (group scores only if all tests in that group passed)
Registration closed tomorrow (08 July) at 18:00 UTC!
UPD: (possibly) rules changed this year.
UPD2: you should have recieved e-mail wih password and instructions. Rules indeed were updated.
UPD3: Contest server is veeeery slow so here is the mirror for the tasks (thx to popoffka):
UPD4: Here is mirror for second day statements (thx to yeputons):