Question 1
Input Matrix:
77 1 29
53 44 32
28 91 57
Apply transformation: diagonal_sum
What is the output?
Sum of each diagonal (top-left to bottom-right)
77 1 29
53 44 32
28 91 57 → 77 54 101 123 57
77 1 29
53 44 32
28 91 57 → 77 54 101 123 57