import itertools as iter
import collections as coll
import heapq as hq
import bisect as bis
from decimal import Decimal as dec
from functools import cmp_to_key
import math
import sys
#import pypyjit
#pypyjit.set_param('max_unroll_recursion=-1')
sys.setrecursionlimit(10 ** 6)
inp = sys.stdin.readline
input = lambda : inp().rstrip()
getN = lambda : int(inp())
getNs = lambda : map(int, inp().split())
getList = lambda :list(map(int, inp().split()))
getStrs = lambda n : [input() for _ in [0] * n]
def yexit(): print("Yes"); exit(0)
def nexit(): print("No"); exit(0)
pi = 3.141592653589793
mod = 1000000007
MOD = 998244353
INF = 4611686018427387903
dx = [1, 0, -1, 0];	dy = [0, 1, 0, -1]


"""
Main Code
"""

n, m = getNs()
lis = [getList() for _ in [0] * m]
table = [[0] * 3 for _ in [0] * n]

route = [[] for _ in [0] * n]
for p, q, a, b in lis:
	p -= 1;	q -= 1
	a -= 1;	b -= 1
	table[p][a] = table[q][b] = 1
	route[p].append((q, b))
	route[q].append((p, a))

ans = [0] * n
que = []
#print(table)
for i in range(n):
	cnt = 0
	for j in table[i]:
		cnt += j
	if(cnt != 1):
		continue
	que.append(i)

visited = [0] * n
while(que):
	i = que.pop()
	if(visited[i]):
		continue
	visited[i] = True
	for j in range(3):
		if not(table[i][j]):
			continue
		ans[i] = j + 1
		break
	for ni, t in route[i]:
		if(visited[ni]):
			continue
		visited[ni] = True
		table[ni][t] = 0
		cnt = 0
		for j in table[ni]:
			cnt += j
		if(cnt > 1):
			continue
		que.append(ni)

for i in range(n):
	if(ans[i] > 0):
		continue
	for j in table[ni]:
		cnt += j
	if(cnt > 1):
		print(-1)
		exit(0)
	ans[i] = 1
print(*ans)