SUMSUMS Ques. --->

3 4
1
0
4

as
3x1 (3 crosses 1 matrix)
how it is possible to square it
it voilates multiplicative property

matrix exponentiation needs to be done by creating a n*n matrix

where all diagonals are kept 0
for example the initial matrix is of the form
c1
c2
c3

the resultant matrix on which operation need to be applied are

0 1 1 c1
1 0 1 * c2
1 1 0 c3

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