# -*- coding: utf-8 -*-
"""
TP13 : Graphes

PCSI2 - Albert Schweitzer - Le Raincy
"""

##13.1
##Q2

##12.2

fin = list(range(1, 10))
fin[-1] = 0

def affiche(L):
	s = ''
	for i in range(len(L)):
		if i % 3 == 0:
			s += '\n'
		if L[i] == 0:
			s += '  '
		else:
			s += str(L[i]) + ' '
	print(s)