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

Name	Fastest	Shortest	Total	Acc.	Ratio	Difficulty	Languages
Astro	0.00	356	978	312	32%	3.9Medium	en
Avion	0.00	42	7892	4426	56%	1.5Easy	en
Dugovi	0.02	795	151	52	34%	6.5Hard	en
Hrpa	0.00	64	83	42	51%	4.7Medium	en
Parket	0.00	71	845	456	54%	2.4Easy	en
Prosjek	0.00	76	269	85	32%	5.6Hard	en