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]
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diffirent
nice
Feel like I understood this set after B lol