#include <bits/stdc++.h>
using namespace std;
int main() {
  int n;
  while (cin >> n) {
    if (!n) break;
    int id, p, q;
    bool flag = false;
    long long workers[4000] = {0};
    for (int i = 0; i < n; i++) {
      cin >> id >> p >> q;
      workers[id] += p * q;
    }
    for (int i = 0; i < 4000; i++) {
      if (workers[i] >= 1000000) {
        cout << i << endl;
        flag = true;
      }
    }
    if (!flag) cout << "NA" << endl;
  }
  return 0;
}
