lingo报错 index variables may not share names with other variablessets:teacher/1..8/;lunshu/1..5/;link(teacher,lunshu):x;endsetsmin=@sum(link(i,j):x(i,j)*0.5);@bnd(18,x(i,j),19);@for(lunshu(j):@sum(teacher(i):x(i,j))=a(j););@gin(link(i,j):x(i,j));
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