Given some multidimensional matrix A. Get a matrix of the same size as A where all elements are replaced by their index along the kth dimension

Example

Input

A =
ans(:,:,1) =

    1   3
    6   2

ans(:,:,2) =

     6   9
     7   6

Output:

f(A,1) =
ans(:,:,1) =

     1   1
     2   2

ans(:,:,2) =

     1   1
     2   2

f(A,2) =
ans(:,:,1) =

     1   2
     1   2

ans(:,:,2) =

     1   2
     1   2

f(A, 3) =

ans(:,:,1) =

     1   1
     1   1

ans(:,:,2) =

     2   2
     2   2