Multiple Choice Exam

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Chef is taking a cooking exam. The exam consists of $N$ multiple-choice questions numbered $1$ through $N$. In each question, Chef may choose one out of four choices: A, B, C and D, or leave the question unanswered. Answering a question correctly gives Chef $1$ point. Not answering a question or answering it incorrectly gives him $0$ points. However, there is a penalty for wrong answers. Specif

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solution.cppC++17

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