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

memo = [-1] * (N+1)
import sys
for i in range(1,N+1):
    if memo[i] != -1:continue
    memo[i] = 0
    stack = [i]
    while stack:
        now = stack.pop()
        for v,y in G[now]:
            if memo[v] == -1:
                memo[v] = memo[now] ^ y
                stack.append(v)
            else:
                if memo[v] != memo[now] ^ y:
                    print(-1)
                    exit()
for i in memo[1:]:
    print(i)