5th Polish Olympiad in Informatics

Tasks

AB-words (Stage I)  
Painter\'s Studio (Stage I)  
Sum of One-sequence (Stage I)  
Polygon (Stage I)  
Road Net (Stage II - day 0)  
How to Pack Containers? (Stage II - day 1)  
Word Equations (Stage II - day 1)  
Window (Stage II - day 2)  
Frogman (Stage II - day 2)  
Assembler Circuits (Stage III - day 0)  
ATMs (Stage III - day 1)  
Chase (Stage III - day 1)  
The Lightest Language (Stage III - day 1)  
Flat Broken Lines (Stage III - day 2)  
Rectangles (Stage III - day 2)