Lingo建模语言与实例4

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目标与约束段
集合段（SETS    ENDSETS）
数据段（DATA   ENDDATA）
0 |# _! d  ]! B- b9 h初始段（INIT  ENDINIT）
2 g8 R4 v5 C8 u- s7 S8 |1 m% H0 g% y（计算段 (CALC ENDCALC)）
6 J* L8 X+ O" o- HMODEL:
7 H$ C5 Z: g6 w: g# J/ l2 RTitle Location Problem;
% [; L$ {( |6 t4 Msets:
1 }4 o8 B) F' J% M/ O* @! q    demand/1..6/:a,b,d;
" Y, y) r* |* \. ~0 n    supply/1..2/:x,y,e;
! g' {( t9 s1 @$ t5 w    link(demand,supply):c;
endsets
' s! [5 r1 \1 n- l( Q0 M6 Hdata:
( p: K/ o; Z: ?( S' }a=1.25,8.75,0.5,5.75,3,7.25;
b=1.25,0.75,4.75,5,6.5,7.75;
d=3,5,4,7,6,11; e=20,20;
enddata
, c; S6 v9 C8 E* vinit:
- d, [, y  E, G9 _x,y=5,1,2,7;
' A0 K1 c* Q, V. Y! Jendinit
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););
6 f( w, _% |1 S; X@for(supply(i)sum(demand(j):c(j,i))<=e(i););
END
) K4 s. y3 ]; _/ u* _& u; j( m0 ]

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