Expression

Main Operation

Time complexity

${\rho }^{n-2s}$

Multiple

$n-2s$

${\left(-1\right)}^s$

Compare

1

$\left(n-s\right)\mathrm{<mo>\; !\; </mo>}$

Compare or Multiple

$n-s$

$s!$

Compare or Multiple

$s$

$0.5\left(n+\left|m\right|-s\right)\mathrm{<mo>\; !\; </mo>}$

Compare or Multiple

$n+\left|m\right|-s+1$

$0.5\left(n-\left|m\right|-s\right)\mathrm{<mo>\; !\; </mo>}$

Compare or Multiple

$n-\left|m\right|-s+1$

Dividing

Multiple

1

Total

$4n+4-4s$