Consider the following piece of pseudocode:

function $\frac{?}{\text{S}\text{u}\text{m}}(n)$

xlarr$0$

$ifn<mn>0</mn>$ then

return $0$

end $if$

for $0indo$

xlarrx$+i$

end for

return $x$

end function

xlar$\frac{r}{S}um(-1)$

What is the final value of $x?$