Standard input is empty

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	Число		Решение
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	-4		9
	-3.9		8.8
	-3.8		8.6
	-3.7		8.4
	-3.6		8.2
	-3.5		8
	-3.4		7.8
	-3.3		7.6
	-3.2		7.4
	-3.1		7.2
	-3		7
	-2.9		6.8
	-2.8		6.6
	-2.7		6.4
	-2.6		6.2
	-2.5		6
	-2.4		5.8
	-2.3		5.6
	-2.2		5.4
	-2.1		5.2
	-2		5
	-1.9		4.8
	-1.8		4.6
	-1.7		4.4
	-1.6		4.2
	-1.5		4
	-1.4		3.8
	-1.3		3.6
	-1.2		3.4
	-1.1		3.2
	-1		3
	-0.9		3
	-0.8		3
	-0.7		3
	-0.6		3
	-0.5		3
	-0.4		3
	-0.3		3
	-0.2		3
	-0.1		3
	2.41474e-15		3
	0.1		3
	0.2		3
	0.3		3
	0.4		3
	0.5		3
	0.6		3
	0.7		3
	0.8		3
	0.9		3
	1		3
	1.1		3
	1.2		3
	1.3		3
	1.4		3
	1.5		3
	1.6		3
	1.7		3
	1.8		3
	1.9		3
	2		3
	2.1		3.2
	2.2		3.4
	2.3		3.6
	2.4		3.8
	2.5		4
	2.6		4.2
	2.7		4.4
	2.8		4.6
	2.9		4.8
	3		5
	3.1		5.2
	3.2		5.4
	3.3		5.6
	3.4		5.8
	3.5		6
	3.6		6.2
	3.7		6.4
	3.8		6.6
	3.9		6.8
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