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

	Add	Remove

Name	Fastest	Shortest	Total	Acc.	Ratio	Difficulty	Languages
Blokovi	0.02	122	55	14	25%	7.2Hard	en
DNA	0.00	53	909	355	39%	4.8Medium	en
Eko	0.04	86	1398	425	30%	3.7Medium	en
Križaljka	0.00	100	2137	1158	54%	1.8Easy	en
Popločavanje	0.11	853	359	83	23%	7.3Hard	en
Razbibriga	0.01	242	221	95	43%	6.2Hard	en