Here are the authors of tasks used at IOI 2015.
- boxes: Monika Steinová (SUI)
- scales: Eryk Kopczynski (POL)
- teams: Adam Karczmarz (POL)
- horses: Mansur Kutybayev (KAZ)
- sorting: Weidong Hu (CHN)
- towns: Bang Ye Wu (TWN)
Backups (not public):
- Ulugbek Adilbekov (KAZ)
- Vytautas Gruslys (LTU)
- Michal Forišek (SVK)
Which task did you like the most?