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	1276	389	30%	4.2Medium	en
Avion	0.00	5	10319	5542	54%	1.5Easy	en
Dugovi	0.02	795	218	61	28%	7.0Hard	en
Hrpa	0.00	5	137	58	42%	4.9Medium	en
Parket	0.00	71	1016	532	52%	2.2Easy	en
Prosjek	0.00	76	348	106	30%	5.7Hard	en