hi everyone! I want to post a constraint that is the sum of a sum like this *sum(sum (res [ i ] * X.row (i)))=Z, **with 0 < i <n*
but in the documentation MPG I just found the linear constraint that are used to constraint the sum not the sum of sum : let me explain: I have a matrix : vector < vector <int> > res , and a Boolean matrix X defined as follows: Matrix <BoolVarArray> X (a, m, n); in the following code I had to do this sum : *sum (res [ i ] * X.row (i)) with 0 < i <n* / / here i can not pay this sum for a table because the 2 matrix does not have the same type and i didnt find any prototype of the linear constraint that can do this. Then I had to make this sum : *the sum of the previous sum= Z* so I used this constraint but it appeared that it is false because it does not give me the desired solution : *linear ( * this , res [ i ] X.row ( i ) IRT_EQ , Z) ;* I know that this constraint only to : *sum (res [ i ] * X.row (i)) = Z* , where 0 < i < n; an dits wrong. you have an idea on correcting this error could you help me please thank you very much for your help Manel
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