SETS
  I    depot             /SOLLEFT, GAVLE /
  J    demandarea        /STOCKHOLM, BODEN/
  V    equipment         /TANK, TGB11 /
  M    transportation    /TRAIN, AIRPLANE /;

TABLE   DIST(I,J)  distance in kilometers
         STOCKHOLM    BODEN
SOLLEFT     400        350
GAVLE       250        550   ;

PARAMETER  DEM(J,V)  demand 

   /STOCKHOLM.TANK           20 
    STOCKHOLM.TGB11          10 
    BODEN.TANK               10 
    BODEN.TGB11              10   /;

TABLE A(I,V)  available equipment 
             TANK      TGB11
SOLLEFT        20         10
GAVLE          20         20 

TABLE   CAP(I,M)    transportation capacity in tons
              TRAIN      AIRPLANE                 
SOLLEFT         150         150
GAVLE           150         150  ;

PARAMETERS 

W(V) weight in tons
     /TANK    7
      TGB11   2 /

C(M) cost of transporting a ton one kilometer in kronors

     /TRAIN        2
      AIRPLANE    10/;

VARIABLES  X(I,J,V,M)  shipments
           Z             totalcost;

POSITIVE VARIABLE X;

EQUATIONS
    SATDEM(J,V)    fullfillment of aggregate demand
    AVAIL(I,V)     dont exceed available resources
    CAPCON(I,M)    capacity constraint on transportation
    TOTALCOST      totalcost  ;

* Insert the definitions of the constraints here 
* Observe the syntax carefully.





MODEL TRANS3 /ALL/;

SOLVE TRANS3 USING LP MINIMIZING Z;

DISPLAY X.L, Z.L;