import numpy as np

def mul_v(my_vector: []):

a = np.array(my_vector, int)

return np.outer(a,a)

def mul_m(W,V):

return [int(_/abs(_)) for _ in V_1]

def sum_m(w1, w2):

return np.add(w1, w2)

def fill_diagonal(W):

return W