for i = 1:size(orders, 1) % 宽度需求：sum(x(i,j,1)) >= 2n(i) row = zeros(1, num_vars); for j = 1:size(raw_materials, 1) idx = (i-1)*6 + (j-1)*2 + 1; row(idx) = 1; end A = [A; -row]; b = [b; -2*n(i)]; % 高度需求：sum(x(i,j,2)) >= 2n(i) row = zeros(1, num_vars); for j = 1:size(raw_materials, 1) idx = (i-1)*6 + (j-1)*2 + 2; row(idx) = 1; end A = [A; -row]; b = [b; -2*n(i)]; end % 原材料长度约束 for j = 1:size(raw_materials, 1)