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	53582	29943	56%	1.2Easy	en
Iks	0.00	296	680	324	48%	3.1Medium	en
Kaboom	0.01	5	43	20	47%	7.4Hard	en
Ograda	0.03	986	160	56	35%	6.4Hard	en
Palačinke	0.05	1766	44	9	20%	7.5Hard	en
Planina	0.00	5	23648	14202	60%	1.5Easy	en