#include <bits/stdc++.h>
using namespace std;
#define FOR(i,a,b) for(int i=(a);i<(b);++i)
#define REP(i,n) FOR(i,0,n)
#define ALL(v) begin(v),end(v)
template<typename A, typename B> inline bool chmax(A & a, const B & b) { if (a < b) { a = b; return true; } return false; }
template<typename A, typename B> inline bool chmin(A & a, const B & b) { if (a > b) { a = b; return true; } return false; }
using ll = long long;
using pii = pair<int, int>;
constexpr ll INF = 1ll<<30;
constexpr ll longINF = 1ll<<60;
constexpr ll MOD = 1000000007;
constexpr bool debug = false;
//---------------------------------//

/**
 * @brief https://tkmst201.github.io/Library/DataStructure/UnionFind.hpp
 */
struct UnionFind {
	using size_type = std::size_t;
	
private:
	size_type n;
	std::vector<int> dat;
	
public:
	explicit UnionFind(size_type n) : n(n), dat(n, -1) {}
	
	size_type size(size_type x) noexcept {
		assert(x < n);
		return -dat[find(x)];
	}
	
	size_type find(size_type x) noexcept {
		assert(x < n);
		if (dat[x] < 0) return x;
		return dat[x] = find(dat[x]);
	}
	
	void unite(size_type x, size_type y) noexcept {
		assert(x < n);
		assert(y < n);
		x = find(x);
		y = find(y);
		if (x == y) return;
		if (dat[x] < dat[y]) std::swap(x, y);
		dat[y] += dat[x];
		dat[x] = y;
	}
	
	bool issame(size_type x, size_type y) noexcept {
		assert(x < n);
		assert(y < n);
		return find(x) == find(y);
	}
};

int main() {
	int N, M;
	cin >> N >> M;
	UnionFind uf(N);
	vector<vector<pii>> g(N);
	REP(i, M) {
		int a, b, y;
		scanf("%d %d %d", &a, &b, &y);
		--a; --b;
		uf.unite(a, b);
		g[a].emplace_back(b, y);
		g[b].emplace_back(a, y);
	}
	
	vector<int> done(N, false), ans(N);
	REP(i, N) if (uf.find(i) == i) {
		queue<int> que;
		que.emplace(i);
		done[i] = true;
		while (!que.empty()) {
			int u = que.front(); que.pop();
			for (auto [v, c] : g[u]) {
				if (!uf.issame(i, v)) continue;
				if (done[v]) {
					if (c != (ans[u] ^ ans[v])) { puts("-1"); return 0; }
				}
				else {
					ans[v] = ans[u] ^ c;
					done[v] = true;
					que.emplace(v);
				}
			}
		}
	}
	REP(i, N) printf("%d\n", ans[i]);
}