Diluted earnings (loss) per share for the years ended December 31, 2017, 2018 and 2019 are as follows:


Type		2017		2018			2019
		In won
Diluted earnings (loss) per share	￦		2,023		(2,048	)		(3,654	)

Calculation of Diluted earnings per share

Earnings (loss) used in the calculation of total diluted earnings per share for the years ended December 31, 2017, 2018 and 2019 are as follows:


Type		2017		2018			2019
		In millions of won
Profit (loss) used in the calculation of total diluted earnings (loss) per share	￦		1,298,720		(1,314,567	)		(2,345,517	)

Weighted average common shares used in calculating diluted earnings (loss) per share are adjusted from weighted average common shares used in calculating basic earnings (loss) per share. Detailed information of the adjustment for the years ended December 31, 2017, 2018 and 2019 are as follows:


Type	2017		2018		2019
	In number of shares
Weighted average number of common shares		641,964,077		641,964,077		641,964,077
Diluted weighted average number of shares		641,964,077		641,964,077		641,964,077