#include <bits/stdc++.h>

using namespace std;

vector<bool> vst;
vector<int> ans;

void dfs(vector<vector<pair<int, int>>> &E, int from){
    vst[from] = 1;
    int alt;

    for(auto [to, C] : E[from]){
        alt = C ^ ans[from];
        if (vst[to]){
            if (alt != ans[to]){
                cout << -1 << endl;
                exit(0);
            }
            continue;
        }
        ans[to] = alt;
        dfs(E, to);
    }
}

int main(){

    int N, M, A, B, Y;
    cin >> N >> M;
    vector<vector<pair<int, int>>> E(N);

    for (int i=0; i<M; i++){
        cin >> A >> B >> Y; A--; B--;
        E[A].push_back({B, Y});
        E[B].push_back({A, Y});
    }
    vst.resize(N);
    ans.resize(N);
    
    for (int i=0; i<N; i++){
        if (!vst[i]) dfs(E, i);
    }

    for (int i=0; i<N; i++) cout << ans[i] << endl;

    return 0;
}