How to define 3D variable in OMPR package of R?

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伪装坚强ぢ
伪装坚强ぢ 2021-02-15 05:23

I am trying to solve a MILP supply network optimization problem using R\'s OMPR package. I need to define a 3D binary variable (x[i,j,q]) in the model to map Customers (i) to DC

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