set ORIG :=  1  2  3  4  5  6  7  8  9  10
 11  12  13  14  15  16  17 18  19  20  21  22 23  24  25;

set DEST :=   A3      A6      A8       A9      B2      B4;  

param  supply := 
   1 23070    6 21090   11 22690   16 17110   21 16720
   2 18290    7 16650   12 19360   17 15380   22 21540
   3 20010    8 18420   13 22330   18 18690   23 16500
   4 15080    9 19160   14 15440   19 20720   24 15310
   5 17540   10 18860   15 19330   20 21220   25 18970 ;

param  demand :=
        A3    12000
        A6    12000
        A8    14000
        A9    13500
        B2    25000
        B4    29000 ;

param fix_cost  default 500000 ;

param var_cost:
          A3      A6      A8       A9      B2      B4  :=
    1   73.78   14.76   86.82    91.19   51.03   76.49
    2   60.28   20.92   76.43    83.99   58.84   68.86
    3   58.18   21.64   69.84    72.39   61.64   58.39
    4   50.37   21.74   61.49    65.72   60.48   56.68
    5   42.73   35.19   44.11    58.08   65.76   55.51
    6   44.62   39.21   44.44    48.32   76.12   51.17
    7   49.31   51.72   36.27    42.96   84.52   49.61
    8   50.79   59.25   22.53    33.22   94.30   49.66
    9   51.93   72.13   21.66    29.39   93.52   49.63
   10   65.90   13.07   79.59    86.07   46.83   69.55
   11   50.79    9.99   67.83    78.81   49.34   60.79
   12   47.51   12.95   59.57    67.71   51.13   54.65
   13   39.36   19.01   56.39    62.37   57.25   47.91
   14   33.55   30.16   40.66    48.50   60.83   42.51
   15   34.17   40.46   40.23    47.10   66.22   38.94
   16   41.68   53.03   22.56    30.89   77.22   35.88
   17   42.75   62.94   18.58    27.02   80.36   40.11
   18   46.46   71.17   17.17    21.16   91.65   41.56
   19   56.83    8.84   83.99    91.88   41.38   67.79
   20   46.21    2.92   68.94    76.86   38.89   60.38
   21   41.67   11.69   61.05    70.06   43.24   48.48
   22   25.57   17.59   54.93    57.07   44.93   43.97
   23   28.16   29.39   38.64    46.48   50.16   34.20
   24   26.97   41.62   29.72    40.61   59.56   31.21
   25   34.24   54.09   22.13    28.43   69.68   24.09 ;