Problems from Croatian Open Competition in Informatics 2009/2010, contest #5

	Submissions				Users
Name	Total	Acc.	Ratio	Fastest	Total	Acc.	Ratio	Difficulty
Chuck	16	6	38%	0.01	7	6	86%	6.2
Cudoviste	1835	1298	71%	0.00	1269	1221	96%	1.4
Kletva	217	54	25%	0.01	59	46	78%	7.3
Program	624	162	26%	0.15	223	89	40%	7.8
Sok	1517	912	60%	0.00	815	764	94%	1.8
Zuma	72	29	40%	0.00	27	19	70%	6.9