Problems from Croatian Open Competition in Informatics 2015/2016, contest #5

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Name	Fastest	Shortest	Authors	Full Solves	Ratio	Difficulty	Languages
Multigram	0.00	114	649	585	90%	2.4Easy	en
Oop	0.18	1326	143	50	35%	8.6Hard	en
Perica	0.01	119	519	454	87%	3.5Medium	en
Podnizovi	0.04	980	24	10	42%	7.8Hard	en
Poplava	0.01	117	232	206	89%	3.9Medium	en
Zamka	0.00	61	10761	10321	96%	1.4Easy	en