TeX source:

\sum_\limits{i=1}^{N^{\prime}}\left(\sum\limits_{f=1}^{F}\left(P A_{i f} * E F_{i f} *\left(T C_{i f}+\alpha_{1 i} * \operatorname{Max}\left(0, D_{f}-C_{i}\right)+\alpha_{i} * \operatorname{Max}\left(0, d_{i}-A_{f}\right)+\beta_{i} * \operatorname{Max}\left(0, A_{f}-d_{i}\right)\right)\right)\right)