新手求助，这个lingo程序哪里出问题了
model:sets:
day/mon..sun/:r,x;
end sets
data:
r=20 16 13 16 19 14 12;
end data
min=z
n=@size(day);
z=@sum(day:x);
@for(day(i):z-x(@wrap(i+1,n)-x(@wrap(i+2,n))>=r(i));
end
语法怎么错了。。。运行提示n=@size(day);错了 model:
sets:
day/mon..sun/:r,x;
end sets
data:
r=20 16 13 16 19 14 12;
end data
n=@size(day);
z=@sum(day:x);
min=z;
@for(day(i):z-x(@wrap(i+1,n))-x(@wrap(i+2,n))>=r(i));
end给你改了一下，能找到全局最优解！你主要是缺少了括号。
Global optimal solution found.
Objective value: 22.00000
Infeasibilities: 0.000000
Total solver iterations: 5
Model Class: LP
Total variables: 8
Nonlinear variables: 0
Integer variables: 0
Total constraints: 9
Nonlinear constraints: 0
Total nonzeros: 30
Nonlinear nonzeros: 0
Variable Value Reduced Cost
N 7.000000 0.000000
Z 22.00000 0.000000
R( MON) 20.00000 0.000000
R( TUE) 16.00000 0.000000
R( WED) 13.00000 0.000000
R( THU) 16.00000 0.000000
R( FRI) 19.00000 0.000000
R( SAT) 14.00000 0.000000
R( SUN) 12.00000 0.000000
X( MON) 8.000000 0.000000
X( TUE) 2.000000 0.000000
X( WED) 0.000000 0.000000
X( THU) 6.000000 0.000000
X( FRI) 3.000000 0.000000
X( SAT) 3.000000 0.000000
X( SUN) 0.000000 0.3333333
Row Slack or Surplus Dual Price
1 0.000000 0.000000
2 0.000000 0.3333333
3 22.00000 -1.000000
4 0.000000 -0.3333333
5 0.000000 0.000000
6 0.000000 -0.3333333
7 0.000000 0.000000
8 0.000000 -0.3333333
9 0.000000 -0.3333333
10 0.000000 0.000000
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