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

	Add	Remove

Name	Fastest	Shortest	Authors	Full Solves	Ratio	Difficulty	Languages
Astro	0.00	356	393	322	82%	4.1Medium	en
Avion	0.00	40	5426	5184	96%	1.4Easy	en
Dugovi	0.02	795	85	58	68%	6.7Hard	en
Hrpa	0.00	64	71	58	82%	4.3Medium	en
Parket	0.00	71	568	520	92%	2.1Easy	en
Prosjek	0.00	76	133	101	76%	4.5Medium	en