lingo 约束条件 顺序

lingo 约束条件 顺序lingo中,约束条件的顺序对结果有什么影响?为什么?程序1model:sets:worker/w1..w5/:;job/j1..j5/:;links(worker,job):c,x;endsetsdata:c=8,6,10,9,12,9,12,7,11,9,7,4,3,5,8,9,5,8,11,8,4,6,7,5,11;enddatamin=@sum(links:c*x);@for(job(j):@sum(worker(i):x(i,j))=1);@for(worker(i):@sum(job(j):x(i,j))=1);@for(links:@bin(x));end 程序2model:sets:worker/w1..w5/:;job/j1..j5/:;links(worker,job):c,x;endsetsdata:c=8,6,10,9,12,9,12,7,11,9,7,4,3,5,8,9,5,8,11,8,4,6,7,5,11;enddatamin=@sum(links:c*x);@for(worker(i):@sum(job(j):x(i,j))=1);@for(job(j):@sum(worker(i):x(i,j))=1);@for(links:@bin(x));end 的结果不一样，为什么呢？