Problem 44687. basic matrix operations: rotate and find sum of diagonal elements of the resultant matrix

For given input matrix a, rotate it by 90 degrees and find the sum of the diagonals.

Example: Input:

a =

     1     2     3     4
     5     6     7     8
     8    10    12    -2
    -1    -3    -5    -7

Output is:

20
Solve

Solution Stats

77.5% Correct | 22.5% Incorrect
Last Solution submitted on Nov 29, 2025

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