@sum(sale(j):x(i,j))<=a(i)); @for(sale(j):[DEM] @sum(origin(i):x(i,j))=b(j)); end lingo结果:
Global optimal solution found.
Objective value: 161.0000 Infeasibilities: 0.000000 Total solver iterations: 6 Variable Value Reduced Cost X( 1, 1) 2.000000 0.000000 X( 1, 2) 17.00000 0.000000 X( 1, 3) 1.000000 0.000000 X( 1, 4) 0.000000 2.000000 X( 2, 1) 13.00000 0.000000 X( 2, 2) 0.000000 9.000000 X( 2, 3) 0.000000 1.000000 X( 2, 4) 12.00000 0.000000 X( 3, 1) 0.000000 7.000000 X( 3, 2) 0.000000 11.00000 X( 3, 3) 21.00000 0.000000 X( 3, 4) 0.000000 5.000000 Row Slack or Surplus Dual Price OBJ 161.0000 -1.000000 SUP( 1) 10.00000 0.000000 SUP( 2) 0.000000 2.000000 SUP( 3) 0.000000 5.000000 DEM( 1) 0.000000 -6.000000 DEM( 2) 0.000000 -2.000000 DEM( 3) 0.000000 -6.000000
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