LINGO的小练习
本帖最后由 如鱼 于 2013-11-15 16:49 编辑我写的：
sets:
x/1..4/:m;
c/1..4/:n;
q(x,c):p;
endsets
max=@sum(x(i):m(i)*n(i))+0.5*@sum(x(i):m(i)*p(j,i)*m(i));
m(1)*m(2)+m(3)*m(4)<=1;
m(1)*m(2)+m(3)*m(4)>=-1;
@sum(x(i):m(i);)<=2;
@sum(x(i):m(i);)>=-3;
data:
n=6 8 4 -2;
p = -1 0 0 0
0 -1 0 0
0 0 -1 0
0 0 0 -1;
enddata
@for(x(i):
@free(m(i));
@abs(m(i))=1;
);！不知道对不对，求指导
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