Lingo建模语言与实例4

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目标与约束段
5 |8 I! @4 {! P9 j* N集合段（SETS    ENDSETS）
# q2 u6 p9 d/ Q; B' x& w: ^0 I数据段（DATA   ENDDATA）
初始段（INIT  ENDINIT）
（计算段 (CALC ENDCALC)）
MODEL:
Title Location Problem;
% ?+ o/ `) h9 d+ J# h) Asets:
    demand/1..6/:a,b,d;
2 J  \0 |% x* a4 e5 ^    supply/1..2/:x,y,e;
1 G+ m- w; j; M! d# S2 B    link(demand,supply):c;
endsets
& Y& F- s( v, m5 g8 F% ]7 Bdata:
a=1.25,8.75,0.5,5.75,3,7.25;
b=1.25,0.75,4.75,5,6.5,7.75;
2 f1 A7 L2 t) w% E$ Cd=3,5,4,7,6,11; e=20,20;
; g) _9 N, m4 N3 x/ d0 ]+ Henddata
* L1 k. {, }5 `# D0 ]# P% einit:
x,y=5,1,2,7;
endinit
min=@sum(link(i,j):c(i,j)*((x(j)-a(i))^2+(y(j)-b(i))^2)^(1/2));
0 e8 E1 F+ [  O4 x( u@for(demand(i)sum(supply(j):c(i,j))=d(i););
@for(supply(i)sum(demand(j):c(j,i))<=e(i););
& F' E" y. a) n% CEND
. J" I8 J/ W6 G( D

longde

好
6 {, U; n, w& e" W2 `  @