model:
sets:
workers/w1..w5/:i;
jobs/j1..j5/:j;
link(workers,jobs):cost,x;
endsets
date:
cost= 5 9 7 6 5
      9 4 6 3 7
      6 9 8 5 4
      4 8 7 6 5
      3 5 6 7 4;
enddates
init:
endinit
[obj] min=@sum(link(workers,jobs):cost*x);
      @for(jobs(j):@sum(i:x(i,j)=1);
      @for(workers(i)@sum(j:x(i,j)=1);
      @for(link(i,j):x(i,j)>=0);
end
  这个那里运行错误啊?