Mark Zuckerberg, the CEO of Facebook, has hired you to lead the Facebook Algorithms Group. He has asked you to use various graph algorithms to analyze the world's largest social network.
The Facebook Graph has 2.8 billion vertices, with each vertex being a Facebook user. Two vertices are connected provided those two users are "friends".
The first decision you need to make is how you want to model the Facebook graph.
Determine whether you should use an adjacency-list representation or an adjacency-matrix representation.
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