#!/usr/bin/python
# 7.9 
import os, sys
sys.path += [os.getcwdu() + os.sep + ".." + os.sep + "python"]

import pylab as pl
from left_prm import left_prm

D = pl.array([[1, 0, 0, 0, 0, 0],
              [0, 1, 0, 1, 0, 0],
              [0, 0, 1, 1, 1, 0]])

N = pl.array([[1, 0, 0],
              [0, 1, 0],
              [0, 0, 1]])

dD, dN = 1, 0

B, dB, A, dA = left_prm(N, dN, D, dD)

print "A =", A
print "dA =", dA

print "B =", B
print "dB =", dB