#include <bits/stdc++.h>
using namespace std;
int main() {
  int n, m;
  cin >> n >> m;
  for (int i = 0; i < m; i++) {
    int p, q, a, b;
    cin >> p >> q >> a >> b;
    if (a < 0) {
      cout << -1 << "\n";
      return 0;
    }
  }
  for (int i = 0; i < n; i++) cout << 1 << (i + 1 == n ? "\n" : " ");
}