Question: Either prove that the following problem is NP-complete or show that it belongs to P by giving a polynomial time algorithm: Input: Integers a1, .

Either prove that the following problem is NP-complete or show that it belongs to P by giving a polynomial time algorithm: Input: Integers a1, . . . , an 0. Question: Is there a nonempty subset S {1, . . . , n} such that P iS ai is a power of 2

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