Problems from Croatian Regional Competition in Informatics 2007

Name	Fastest	Shortest	Total	Acc.	Ratio	Difficulty	Languages
Bard	0.00	218	2750	1332	48%	2.9Medium	en
Circle	0.00	1051	152	52	34%	5.7Hard	en
Firefly	0.01	127	4648	1894	41%	3.5Medium	en
Tetris	0.00	337	1606	894	56%	1.8Easy	en