Problems from Baltic Olympiad in Informatics 2018, practice session

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Name	Fastest	Shortest	Authors	Full Solves	Ratio	Difficulty	Languages
Citations	0.02	382	184	101	55%	1.4 - 6.1Hard	en et is ja lv pl ru
Ninety-nine	0.00	32	1280	967	76%	1.2 - 3.0Medium	en et is ja lv pl ru
Simple Arithmetic	0.00	33	1245	775	62%	1.2 - 4.6Medium	en et is ja lv pl ru sv