def delta(k,j,D):
    s=0
    c=0
    dxy=D[k][j]
    for i in range(len(D)):
        if D[k][i]>eps:
            c+=1
            s+=n_positive(dxy,D[k][i])
    return (s/c)

def calc_delta(array,k,D):
    mas_delta=[0 for y in range(len(D))]
    for j in range(len(mas_delta)):
        if D[k][j]>eps:
            mas_delta[j]=delta(k,j,D)
        else:
            mas_delta[j]=1
        array[j].delta=mas_delta[j]
    return mas_delta