Generate an hourglass shape using matrix geometry and symmetry.
e.g. N = 5;
1 1 1 1 1;
0 1 1 1 0;
0 0 1 0 0;
0 1 1 1 0;
1 1 1 1 1;
Solve

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Last Solution submitted on Feb 02, 2026

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Dyuman Joshi Christian Schröder Pradheepa Matthew Bolyard

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