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	1305	392	30%	4.1Medium	en
Avion	0.00	5	10442	5622	54%	1.4Easy	en
Dugovi	0.02	795	223	61	27%	7.0Hard	en
Hrpa	0.00	5	142	58	41%	4.9Medium	en
Parket	0.00	71	1025	534	52%	2.2Easy	en
Prosjek	0.00	76	356	106	30%	5.7Hard	en