Normalize the array Z by subtracting its mean and dividing by its standard deviation: (Z - mean) / std.

Input

[[ 0.  1.  2.  3.  4.]
 [ 5.  6.  7.  8.  9.]
 [10. 11. 12. 13. 14.]
 [15. 16. 17. 18. 19.]
 [20. 21. 22. 23. 24.]]

Output

[[-1.66410059 -1.52542554 -1.38675049 -1.24807544 -1.10940039]
 [-0.97072534 -0.83205029 -0.69337525 -0.5547002  -0.41602515]
 [-0.2773501  -0.13867505  0.          0.13867505  0.2773501 ]
 [ 0.41602515  0.5547002   0.69337525  0.83205029  0.97072534]
 [ 1.10940039  1.24807544  1.38675049  1.52542554  1.66410059]]