sum(edge(i,j):c(i,j)*d(i,j)*x(k,i,j)*s(k,i)));
sum(edge(i,j):x(k,i,j)*d(i,j))*4/3+0.1*(@sum(xingshi(k,i,j):x(k,i,j))-2)<240);
sum(xingshi(k,i,j):x(k,i,j)*g(j))<q(k));
sum(xingshi(k,i,j):x(k,i,j))=1);
sum(xingshi(k,i,j):x(k,i,j))=1);
bin(x(k,i,j)));
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