#include <bits/stdc++.h>
using namespace std;
int main() {
  int n;
  bool a[4001], f;
  long long int s, t, u;
  while (1) {
    cin >> n;
    if (n == 0) {
      break;
    }
    fill(a, a + 4001, false);
    f = true;
    for (int i = 0; i < n; i++) {
      cin >> s >> t >> u;
      if (a[s]) {
        continue;
      }
      a[s] = true;
      if (t * u >= 1000000) {
        cout << s << endl;
        f = false;
      }
    }
    if (f) {
      cout << "NA" << endl;
    }
  }
  return 0;
}
