一段lingo代码,运行有问题呀!求帮忙呀。。。答:model:TITLE Location Problem;sets:demand/1..6/:a,b,d;supply/1..2/:x,y,e;link(demand,supply):c;endsets data: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 init:x,y=5,1,2,7;endinit [OBJ] min=@sum...