import sys

int1 = lambda x: int(x) - 1

# input = lambda: sys.stdin.buffer.readline()
input = lambda: sys.stdin.readline().rstrip()
ii = lambda: int(input())
i1 = lambda: int1(input())
mi = lambda: map(int, input().split())
mi1 = lambda: map(int1, input().split())
li = lambda: list(mi())
li1 = lambda: list(mi1())
lli = lambda n: [li() for _ in range(n)]

INF = float("inf")
mod = int(1e9 + 7)
# mod = 998244353

n, m = mi()
ans = [-1] * n
for _ in range(m):
    p, q, a, b = mi()
    p, q = p - 1, q - 1
    if a == 1 or b == 1:
        continue
    if 1 <= a <= 3:
        if ans[p] != -1:
            print(-1)
            exit(0)
        else:
            ans[p] = a
    elif 1 <= b <= 3:
        if ans[q] != -1:
            print(-1)
            exit(0)
        else:
            ans[q] = b
    else:
        print(-1)
        exit(0)
for i in range(n):
    if ans[i] == -1:
        ans[i] = 1
print(*ans)