XI OI 2003/2004 - problems

I stage
Game (Gra)HTML   
PIN-code (PIN-kod)HTML   
Strings (Sznurki)HTML   
Spies (Szpiedzy)HTML   
The competition (Zawody)HTML   
Test data
II stage
The Bridge (Most)HTMLPS  
Gates (Bramki)HTMLPSPDF 
Cave (Jaskinia)HTMLPS  
Passage (Przeprawa)HTMLPSPDF 
Tournament (Turniej)HTMLPS  
Test data
III stage
Guesswork (Zgadywanka)HTMLPSPDFMODULES
The Islands (Wyspy)HTMLPSPDF 
East-West (Wschod-Zachod)HTMLPSPDF 
Pooh-Eeyore-sticks (Misie-Patysie)HTMLPSPDFMODULES
Maximal orders of permutations (Maksymalne rzedy permutacji)HTMLPSPDF 
C-algae (Kaglony)HTMLPSPDF 
Test data
The problems are available at main.edu.pl.