Problems from Croatian Open Competition in Informatics 2008/2009, contest #3

	Add	Remove

Name	Fastest	Shortest	Total	Acc.	Ratio	Difficulty	Languages
Binary search tree	0.01	161	10124	2024	20%	5.2Medium	en
Cross	0.00	1041	1161	354	30%	4.2Medium	en
Kemija	0.00	5	9050	5535	61%	1.6Easy	en
Matrica	0.01	1210	126	23	18%	6.5Hard	en
Najkraci	0.34	1006	182	54	30%	6.6Hard	en
Pet	0.00	5	31628	17763	56%	1.3Easy	en