#include <stdio.h>
#define dim 10000

int v[dim], r[10*dim][3], n, m;

int cmmdc(int a, int b)
{
	while (a && b)
	{
		if (a>b) a-=(a/b)*b;
		else b-=(b/a)*a;
	}
	if (a) return a;
	return b;
}

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

int main()
{
	int k;
	freopen("oz.in", "r", stdin);
	freopen("oz.out", "w", stdout);
	scanf("%d %d\n", &n, &m);
	for (k=1; k<=n; k++) v[k]=1;
	for (k=1; k<=m; k++)
	{
		scanf("%d %d %d\n", &r[k][0], &r[k][1], &r[k][2]);
		v[r[k][0]]=cmmmc(r[k][2], v[r[k][0]]);
		v[r[k][1]]=cmmmc(r[k][2], v[r[k][1]]);
	}
	for (k=1; k<=m; k++)
		if (cmmdc(v[r[k][0]], v[r[k][1]])!=r[k][2])
		{
			printf("-1\n");
			return 0;
		}
	for (k=1; k<=n; k++) printf("%d ", v[k]);
	return 0;
}