#include <bits/stdc++.h>

using namespace std;

#define USE_STD_IO 0
#if USE_STD_IO
    #define fin cin
    #define fout cout
#else
    ifstream fin("oz.in");
    ofstream fout("oz.out");
#endif

int p1[100002], p2[100002], cm[100002];
int n, q, i, v[10002];

static inline int Cmmdc(int a, int b) {
    if(0 == a) return b;
    if(0 == b) return a;
    int oa = a, ob = b;
    int rest;
    do {
        rest = a % b;
        a = b;
        b = rest;
    }
    while(0 != b);
    return a;
}

static inline int Cmmmc(int a, int b) {
    return a / Cmmdc(a, b) * b;
}

int main() {
    if(USE_STD_IO) ios_base::sync_with_stdio(false);
    fin.tie(NULL);
    fout.tie(NULL);
    
    fin >> n >> q;
    for(i = 1; i <= n; i++) v[i] = 1;
    for(i = 1; i <= q; i++) {
        fin >> p1[i] >> p2[i] >> cm[i];
        v[p1[i]] = Cmmmc(v[p1[i]], cm[i]);
        v[p2[i]] = Cmmmc(v[p2[i]], cm[i]);
    }
    for(i = 1; i <= q; i++) {
        if(cm[i] != Cmmdc(v[p1[i]], v[p2[i]])) {
            fout << -1;
            return 0;
        }
    }
    
    for(i = 1; i <= n; i++) fout << v[i] << " ";
    
    return 0;
}