Condensed Consolidated Statements of Operations - USD ($) shares in Thousands, $ in Thousands	3 Months Ended
	Apr. 30, 2018	Apr. 30, 2017	[1]
Revenue:
Product	$ 195,449	$ 142,850
Support subscription	60,496	39,795
Total revenue	255,945	182,645
Cost of revenue:
Product	66,420	46,645
Support subscription	23,210	16,903
Total cost of revenue	89,630	63,548
Gross profit	166,315	119,097
Operating expenses:
Research and development	78,492	65,428
Sales and marketing	122,367	91,763
General and administrative	27,330	20,096
Total operating expenses	228,189	177,287
Loss from operations	(61,874)	(58,190)
Other income (expense), net	(999)	1,995
Loss before provision for income taxes	(62,873)	(56,195)
Provision for income taxes	1,431	964
Net loss	$ (64,304)	$ (57,159)	[2],[3]
Net loss per share attributable to common stockholders, basic and diluted (in dollars per share)	$ (0.29)	$ (0.28)
Weighted-average shares used in computing net loss per share attributable to common stockholders, basic and diluted (in shares)	223,768	205,783

[1] * Prior period information has been adjusted to reflect the adoption impact of ASC 606, which we adopted on February 1, 2018.

[2] * Prior period information has been adjusted to reflect the adoption impact of ASC 606 and ASU 2016-18, which we adopted on February 1, 2018

[3] * Prior period information has been adjusted to reflect the adoption impact of ASC 606, which we adopted on February 1, 2018.