COVID Pandemic and Long Queue

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Due to the COVID pandemic, people have been advised to stay at least $6$ feet away from any other person. Now, people are lining up in a queue at the local shop and it is your duty to check whether they are all following this advice. There are a total of $N$ spots (numbered $1$ through $N$) where people can stand in front of the local shop. The distance between each pair of adjacent spots is $1

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solution.cppC++17

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