Problems from Croatian Open Competition in Informatics 2010/2011, contest #4

	Add	Remove

Name	Fastest	Shortest	Total	Acc.	Ratio	Difficulty	Languages
Astro	0.00	356	1335	398	30%	4.1Medium	en
Avion	0.00	5	10533	5666	54%	1.4Easy	en
Dugovi	0.02	795	234	65	28%	6.9Hard	en
Hrpa	0.00	5	157	65	41%	4.7Medium	en
Parket	0.00	71	1039	544	52%	2.2Easy	en
Prosjek	0.00	76	367	109	30%	5.4Medium	en