#include <stdio.h>
#include <vector>
using namespace std;

#define MAX 2000000000

int m, n, i, j, k;
int cm;

struct numere
{
    int x;
    int y;
    int div;
};

struct numere nr[100010];

int cmmdc (int a, int b)
{
    int r;
    while (b)
    {
        r = a % b;
        a = b;
        b = r;
    }
    return a;
}

int cmmmc (int a, int b)
{
    return (long long) a * b / cmmdc (a, b);
}

int main ()
{
    FILE *f = fopen ("oz.in","r");
    FILE *g = fopen ("oz.out","w");
    fscanf (f,"%d %d", &n, &m);

    vector <int> v (n + 1, 1);

    for (k=1; k<=m; ++k)
    {
        fscanf (f,"%d %d %d", &nr[k].x, &nr[k].y, &nr[k].div);
        v[nr[k].x] = cmmmc (v[nr[k].x],nr[k].div);
        v[nr[k].y] = cmmmc (v[nr[k].y],nr[k].div);
    }

    for (i=1; i<=m; ++i)
    {
        if (cmmdc (v[nr[i].x], v[nr[i].y]) != nr[i].div)
        {
            fprintf (g,"-1");
            return 0;
        }
    }

    for (i=1; i<=n; ++i)
        fprintf (g,"%d ", v[i]);

    fclose(g);
    fclose(f);
    return 0;
}