lingo建模语言与实例4

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目标与约束段
) Q5 y/ f! m% @7 l  a1 S* z) ]集合段（SETS    ENDSETS）
+ r7 Y/ S; b0 r$ g! U( N8 P+ `& d数据段（DATA   ENDDATA）
7 I5 `7 G+ |# j* z/ {$ L初始段（INIT  ENDINIT）
) O4 I6 o/ y9 Z7 p/ [( e  D( S( r（计算段 (CALC ENDCALC)）
MODEL:
Title Location Problem;
" X& |2 }- g6 R6 g7 k/ S1 vsets:
% }4 T! H8 Z) h$ L% _6 V4 ^2 l    demand/1..6/:a,b,d;
, K7 C% R2 a5 Q: q3 ?    supply/1..2/:x,y,e;
    link(demand,supply):c;
endsets
! _$ [3 P. f6 O$ \  }; jdata:
a=1.25,8.75,0.5,5.75,3,7.25;
b=1.25,0.75,4.75,5,6.5,7.75;
. a4 [$ a/ \0 b; n6 ]; P* ^8 E+ V2 W$ Vd=3,5,4,7,6,11; e=20,20;
# ?- h- v/ ~3 n9 b6 henddata
init:
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));
@for(demand(i)sum(supply(j):c(i,j))=d(i););
@for(supply(i)sum(demand(j):c(j,i))<=e(i););
# K/ v  |6 }2 K  |END
2 K3 h% r. B" U5 o) t
" [7 d/ Q- }2 E% `$ x1 C