you should concatenate the elements of a matrix in one dimensional array, for example if the input is
A = [1 2 3; 4 5 6; 7 8 9];
the output will be like this:
B = [1 2 3 4 5 6 7 8 9];
Create an index-powered vector
Reverse a matrix
sum all digits
No more zeros
determine the sum of the squares
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