title: Implementing MCLP in pulp
body: <p>I just started some couple hours ago with Pulp. I'm solving a MCLP problem, but i have no idea how to implement the Ni formula: see below in picture. My idea is that if a demand node is covered that another demand node less then 100m should also be covered by the facility. </p>
  
  <p><a href="https://i.stack.imgur.com/ptOaG.png" rel="nofollow noreferrer"><img src="https://i.stack.imgur.com/ptOaG.png" alt="enter image description here"></a></p>