text: import numpy as np
  # a = np.array([[1,2,3],[4,5,6],[7,8,9]])
  # print(a.reshape([-1]))
  # arr1 = np.ones((3,3,2))
  # arr2 = np.ones((3,3))
  # print(arr1)
  # print(arr2)
  
  a=np.zeros((2,2,2))
  a[:,:,0]=([[3,6],[5,8]])
  a[:,:,1]=([[2,5],[7,2]])
  b=np.zeros((2,2,2))
  b[:,:,0]=([[3,2],[9,6]])
  b[:,:,1]=([[7,8],[1,0]])
  c=np.dot(a,b)
  print(c)