#include <bits/stdc++.h>
using namespace std;
int cmmdc(int a, int b){
    while(b){
        int r = a % b;
        a = b;
        b = r;
    }
    return a;
}
int main(){
    ifstream fin("oz.in");
    ofstream fout("oz.out");

    int n, t, a[10010], k = 1;
    int i1[100001], j1[100001], d[100001];
    fin >> n >> t;
    for(int i = 1; i <= n; i++){
        a[i] = 1;
    }
    for(int p = 1; p <= t; p++){
        int i, j, cmd;
        fin >> i >> j >> cmd; 

        i1[k] = i;
        j1[k] = j;
        d[k] = cmd;

        a[i] = a[i] * (cmd / cmmdc(a[i], cmd));
        a[j] = a[j] * (cmd / cmmdc(a[j], cmd));
    }
    bool gasit = true;
    for(int i = 1; i <= k; i++){
        if(cmmdc(i1[i],j1[i]) != d[i])
            gasit = false;   
    }
    if(gasit == false)
        fout << -1;
    else for(int i = 1; i <= n; i++){
        fout << a[i] << " ";
    }
}