根據你寫出的模型，lingo程式是：

MODEL:

MIN=2800*(X11+X21+X31+X41)+4500*(X12+X22+X32)+6000*(X13+X23)+7300*X14;

X11+X12+X13+X14>15;

X12+X13+X14+X21+X22+X23>10;

X13+X14+X22+X23+X31+X32>20;

X14+X23+X32+X41>12;

END

執行後得到全域性最優解：

Global optimal solution found.

Objective value: 118400.0

Infeasibilities: 0.000000

Total solver iterations: 3

Model Class: LP

Total variables: 10

Nonlinear variables: 0

Integer variables: 0

Total constraints: 5

Nonlinear constraints: 0

Total nonzeros: 30

Nonlinear nonzeros: 0

Variable Value Reduced Cost

X11 3.000000 0.000000

X21 0.000000 2800.000

X31 8.000000 0.000000

X41 0.000000 1100.000

X12 0.000000 1700.000

X22 0.000000 1700.000

X32 0.000000 0.000000

X13 0.000000 400.0000

X23 0.000000 1500.000

X14 12.00000 0.000000

Row Slack or Surplus Dual Price

1 118400.0 -1.000000

2 0.000000 -2800.000

3 2.000000 0.000000

4 0.000000 -2800.000

5 0.000000 -1700.000