$onEmpty
 x.L ('seattle'.'new-york') = 50 ;
 x.L ('seattle'.'chicago') = 300 ;
 x.M ('seattle'.'topeka') = 0.036 ;
 x.L ('san-diego'.'new-york') = 275 ;
 x.M ('san-diego'.'chicago') = 0.009 ;
 x.L ('san-diego'.'topeka') = 275 ;
$offListing
 z.L  = 153.675 ;
 cost.M  = 1 ;
 ;
 demand.M ('new-york') = 0.225 ;
 demand.M ('chicago') = 0.153 ;
 demand.M ('topeka') = 0.126 ;

$offEmpty
$onListing
