Given a x-by-x matrix filled with ones (x is odd and > 3). Use 0s to draw a number 0 into it! Like this:
x = 5, y =
1 0 0 0 1
0 1 1 1 0
0 1 1 1 0
0 1 1 1 0
1 0 0 0 1
x = 7, y =
1 0 0 0 0 0 1
0 1 1 1 1 1 0
0 1 1 1 1 1 0
0 1 1 1 1 1 0
0 1 1 1 1 1 0
0 1 1 1 1 1 0
1 0 0 0 0 0 1
Solve

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Last Solution submitted on May 13, 2026

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David Felipe Emilie Jai Rodriguez Andrei Ionescu Jordy

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