/* product.model.txt */

var x1, integer >= 0 ;
var x2, integer >= 0 ;

maximize z: 2*x1 + 3*x2 ;
s.t. st1: x1 + 3*x2 <= 24 ;
s.t. st2: 4*x1 + 4*x2 <= 48 ;
s.t. st3: 2*x1 + x2 <= 22 ;

end;