Problems from Croatian Open Competition in Informatics 2011/2012, contest #5

	Add	Remove

Name	Fastest	Shortest	Total	Acc.	Ratio	Difficulty	Languages
Blokovi	0.02	100	95	22	23%	6.8Hard	en
DNA	0.00	53	1055	402	38%	4.6Medium	en
Eko	0.04	86	1627	491	30%	3.4Medium	en
Križaljka	0.00	100	2298	1238	54%	1.7Easy	en
Popločavanje	0.06	853	399	89	22%	6.2Hard	en
Razbibriga	0.01	242	274	115	42%	6.0Hard	en