18th Polish Olympiad in Informatics

Tasks

Conspiracy (Stage I)  
Lollipop (Stage I)  
Lightning Conductor (Stage I)  
Shift (Stage I)  
Plot (Stage I)  
Strongbox (Stage II - day 0)  
Difference (Stage II - day 1)  
Garbage (Stage II - day 1)  
Tree Rotations 2 (Stage II - day 2)  
Tree Rotations (Stage II - day 2)  
Temperature (Stage II - day 2)  
Dynamite (Stage III - day 0)  
Party (Stage III - day 1)  
Inspection (Stage III - day 1)  
Periodicity (Stage III - day 1)  
Meteors (Stage III - day 2)  
Sticks (Stage III - day 2)  
Programming Contest (Stage III - day 2)