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	61090	33110	54%	1.2Easy	en
Iks	0.00	296	852	402	47%	2.9Medium	en
Kaboom	0.01	5	81	22	27%	6.8Hard	en
Ograda	0.03	986	208	63	30%	7.0Hard	en
Palačinke	0.05	1766	82	11	13%	7.6Hard	en
Planina	0.00	5	25235	15097	60%	1.4Easy	en