graph theory with independent set
A-13.3 Suppose you work for a company that is giving a smartphone to each of its em- ployees. Unfortunately, the companies that make apps for these smartphones are constantly suing each other over their respective intellectual property. Say that two apps, A and B, are litigation-confticting if A contains some disputed tech- nology that is also contained in B. Your job is to pre-install a set of apps on the company smartphones,
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