mod = 1000000007
eps = 10**-9


def main():
    import sys
    from collections import deque
    input = sys.stdin.buffer.readline

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

    seen = [-1] * (N+1)
    for v0 in range(1, N+1):
        if seen[v0] != -1:
            continue
        seen[v0] = 0
        que = deque()
        que.append(v0)
        while que:
            v = que.popleft()
            for u, y in adj[v]:
                if seen[u] == -1:
                    que.append(u)
                    seen[u] = seen[v] ^ y
                else:
                    if seen[v] ^ seen[u] != y:
                        print(-1)
                        exit()
    for v in range(1, N+1):
        print(seen[v])


if __name__ == '__main__':
    main()