Create an n x n matrix that resembles one kind of tent. The variable n is provided to the function and will be an odd number. As an example, if n=5:

 surround(5) = 1  2  3  2  1
               2  3  4  3  2
               3  4  5  4  3
               2  3  4  3  2
               1  2  3  2  1
Solve

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Last Solution submitted on Jan 30, 2026

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Armando Longobardi Vasilis Bellos Truong Minh Lorenzo

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