lingo模型定义不正确 求帮忙!MIN = @SUM( LINKS(I, J): COST(I, J) * VOLUME(I, J))[email protected](AGENCY(I)|DEMAND(I)#GT#(CAPACITY(I)[email protected](AGENCY(J):VOLUME(I,J))[email protected](AGENCY(J):VOLUME(J,I))):DEMAND(I)-(CAPACITY(I)[email protected](AGEN
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@sum后面一定要带冒号的