Given n as input, draw a n-by-n matrix 'I' using 0 and 1.

example:

n=3
ans= 
[0 1 0
 0 1 0
 0 1 0]

n=4
[0 1 1 0
 0 1 1 0
 0 1 1 0
 0 1 1 0]
Solve

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Last Solution submitted on Feb 08, 2026

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Truong Minh 贵林 三生三世 灰

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