import sys
input = sys.stdin.buffer.readline
sys.setrecursionlimit(10 ** 7)

N, M = map(int, input().split())
G = [[] for _ in range(N)]
for _ in range(M):
    a, b = map(int, input().split())
    a -= 1
    b -= 1
    y = int(input())
    G[a].append((b, y))
    G[b].append((a, y))

X = [-1] * N
for i in range(N):
    if X[i] != -1:
        continue
    X[i] = 0
    q = [i]
    while q:
        s = q.pop()
        for t, y in G[s]:
            if X[t] == -1:
                X[t] = y ^ X[s]
                q.append(t)
                continue
            if X[s] ^ X[t] != y:
                print(-1)
                exit()

print(*X, sep="\n")