lingo代码怎么写？

lingo代码怎么写？

max=(425*X11+423*X12+438*X13-410*Y1)+(440*X22+448*X23+428*X24-430*Y2)+(465*X33+438*X34-460*Y3)+(455*X44-450*Y4);

Y1<=20;
Y1-X11-X12-X13-X14=0;
X11<=100;
X12+X13+X14+X2<=20;
Y2-X22-X23-X24=0;
X12+X22<=140;
X13+X14+X23+X24+X3<=20;
Y3-X33-X34=0;
X13+X23+X33<=200;
X14+X24+X34+Y4<=20;
Y4-X44=0;
X14+X24+X34+X44<=160;

结果：
Global optimal solution found.
Objective value: 3060.000
Total solver iterations: 0

Variable Value Reduced Cost
X11 20.00000 0.000000
X12 0.000000 12.00000
X13 0.000000 5.000000
Y1 20.00000 0.000000
X22 140.0000 0.000000
X23 20.00000 0.000000
X24 0.000000 20.00000
Y2 160.0000 0.000000
X33 180.0000 0.000000
X34 0.000000 27.00000
Y3 180.0000 0.000000
X44 20.00000 0.000000
Y4 20.00000 0.000000
X14 0.000000 443.0000
X2 0.000000 0.000000
X3 0.000000 13.00000

Row Slack or Surplus Dual Price
1 3060.000 1.000000
2 0.000000 15.00000
3 0.000000 -425.0000
4 80.00000 0.000000
5 20.00000 0.000000
6 0.000000 -430.0000
7 0.000000 10.00000
8 0.000000 13.00000
9 0.000000 -460.0000
10 0.000000 5.000000
11 0.000000 5.000000
12 0.000000 -455.0000
13 140.0000 0.000000

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