Question

急需LINGO常见模型的程序编写例题

Answer 1

我这里贴一两个我自己写的程序…

MODEL:

SETS:

city/1..6/: u;

link(city,city):dist,x;

ENDSETS

DATA:

dist= 0 702 454 842 2396 1196

702 0 324 1093 2136 764

454 324 0 1137 2180 798

842 1093 1137 0 1616 1587

2396 2136 2180 1616 0 2900

1196 764 798 1857 2900 0;

n=6;

ENDDATA

MIN=@SUM(link:dist*x);

@FOR(link(I,J):@SUM(link(I,J)|I#NE#J:x(I,J))=1);

@FOR(link(I,J):@SUM(link(I,J)|J#GT#1#AND#I#NE#J:u(I)-u(J)+n*x(I,J)