How many lines does the following program print? Answer the question with a function of n $($in big$-$O notation$).$

function f$($n$)$

$\{$

if n$>1$:

$\{$

printline$("$in here"$)$;

f$($n$/3)$;

f$($n$/3)$;

$\}$

$\}$