#include <bits/stdc++.h>
using namespace std;
int main() {
  while (true) {
    int n;
    cin >> n;
    if (n == 0) break;
    int score[4000] = {0};
    int num_max = 0;
    for (int i = 0; i < n; i++) {
      int input_number;
      int tanka;
      int kazu;
      cin >> input_number >> tanka >> kazu;
      score[input_number] += tanka * kazu;
      num_max = max(num_max, input_number);
    }
    bool f = true;
    for (int i = 0; i <= num_max; i++) {
      if (score[i] >= 1000000) {
        cout << i << endl;
        f = false;
      }
    }
    if (f) cout << "NA" << endl;
  }
  return 0;
}
