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\begin{aligned}&\max _{l, s, \mu}\left(w_{S}-m\right) \lambda(p, l, s)-A \mu \\&\text { subject to } \quad \lambda(p, l, s) \leq \mu \\&1-e^{-(\mu-\lambda) l} \geq s \\&l>0, \quad \mu>0 \\&1>s \geq s_{C}\end{aligned}