#include <fstream>
using namespace std;
ifstream fin ("oz.in");
ofstream fout ("oz.out");
long long N, M, i, j, d, V[10010];
bool w = 1;

int main()
{
    fin >> N >> M;
    for (int k = 1; k <= N; k++) V[k] = 1;
    for (int k = 1; k <= M; k++)
    {
        fin >> i >> j >> d;
        if (V[i] % d != 0) V[i] *= d;
        if (V[j] % d != 0) V[j] *= d;
        if (V[i] > 2000000000) w = -1;
    }
    if (w > 0) for (int k = 1; k <= N; k++) fout << V[k] << ' ';
    else fout << "-1";
    fout << '\n';
    fout.close();
    return 0;
}