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s1y9shy

铁虫 (小有名气)

[求助] lingo求解

model:
sets:

supplier/s1..s3/:s;
factory/p1..p3/:a,f;
warhouse/w1..w4/:b,g;
customer/d1..d7/:d,e;
tr/tr1..tr4/:z;
tb/tb1..tb3/:m;
link1(supplier,factory):p,x;
link2(factory,warhouse):c,w;
link3(warhouse,customer):h,y;
endsets

data:
e=2000 2000 2000 2000 2000 2000 2000;
d=100 200 250 200 300 180  160;
g=11000 9000 10000 8500;
f=20000 18000 19000;
s=100 80 60;
p=100 200 200
  200 100 200
  200 200 100;
c=585 575 350 390
  230 230 240 310
  450 450 390 390;
h=15 5 10 90 235 195 235
  5 10 5 115 225 185 225
  220 235 225 130 5 40 10
  180 195 185 100 40  5 30;
enddata

max=@sum(link1(l,i):x(l,i)*@sum(link2(i,j):w(i,j)*@sum(customer(k):e(k)*y(j,k)))-@sum(link1(l,i):p(l,i)*x(l,i))-@sum(link2(i,j):c(i,j)*w(i,j))-
    @sum(link3(j,k):h(j,k)*y(j,k))-@sum(factory(i):f(i)*m(i))-@sum(warhouse(j):g(j)*z(j));
end
第一次用lingo,不是很会用呀,求教,还有约束条件没有弄上去~~是个选址分配的问题
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