#include<bits/stdc++.h>
#include<atcoder/all>
using namespace std;
using namespace atcoder;
#define rep(i,n)for (int i = 0; i < int(n); ++i)
#define rrep(i,n)for (int i = int(n)-1; i >= 0; --i)
#define all(x) (x).begin(), (x).end()
#define rall(x) (x).rbegin(), (x).rend()
template<class T> void chmax(T& a, const T& b) {a = max(a, b);}
template<class T> void chmin(T& a, const T& b) {a = min(a, b);}
using ll = long long;
using P = pair<int,int>;
using VI = vector<int>;
using VVI = vector<VI>;
using VL = vector<ll>;
using VVL = vector<VL>;

int main() {
    ios::sync_with_stdio(false);
    cin.tie(0);
    int n, m;
    cin >> n >> m;
    vector<vector<P>> to(n);
    rep(_, m) {
        int u, v, y;
        cin >> u >> v >> y;
        --u, --v;
        to[u].emplace_back(v, y);
        to[v].emplace_back(u, y);
    }
    VI ans(n, -1);
    bool ok = true;
    auto dfs = [&](auto&& self, int u, int now=0) {
        if (ans[u] == -1) {
            ans[u] = now;
        } else {
            if (ans[u] != now) ok = false;
            return;
        }
        for(auto [v, y]: to[u]) self(self, v, now ^ y);
    };
    rep(u, n) if (ans[u] == -1) dfs(dfs, u);
    if (ok) rep(i, n) cout << ans[i] << "\n";
    else cout << -1 << endl;
}