Problems from Croatian Open Competition in Informatics 2009/2010, contest #4

	Add	Remove

Name	Fastest	Shortest	Total	Acc.	Ratio	Difficulty	Languages
Autori	0.00	5	56235	31007	55%	1.2Easy	en
Iks	0.00	296	707	337	48%	3.1Medium	en
Kaboom	0.01	5	53	20	38%	7.4Hard	en
Ograda	0.03	986	170	57	34%	6.4Hard	en
Palačinke	0.05	1766	56	10	18%	7.6Hard	en
Planina	0.00	5	23994	14356	60%	1.5Easy	en