Component	Complexity
$v_{j k}^{i}$	$O (M^{2})$
$v_{j k}$	$O (M)$
$μ$	$O (M)$
$U_{s} (i, j)$ , $U_{f} (i, j)$ , $U_{b} (i, j)$ , $U_{w} (i, j)$	$O (M^{2})$
$U_{s q} (i)$	$O (M)$
$p_{i j}$	$O (M^{2})$
$E U_{i, j, d}^{i}$	$O (M^{2})$
$E U_{i, j}^{i}$	$O (M^{2})$
$R_{i}$	$O (M^{2})$
$r_{i}$	$O (M)$
Offer categories and proposals	$O (M^{2})$
Choosing proposals	$O (M^{2})$