#include <bits/stdc++.h>
using namespace std;
int main() {
  int n = 0, p, q, na = 1, e[4000] = {}, pr[4000] = {};
  unsigned long long int m[4000] = {};
  while (1) {
    for (int i = 0; i < n; i++) {
      e[i] = 0;
      pr[i] = 0;
      m[i] = 0;
    }
    na = 1;
    cin >> n;
    if (n == 0) break;
    for (int i = 0; i < n; i++) {
      cin >> e[i] >> p >> q;
      m[e[i] - 1] += p * q;
    }
    for (int i = 0; i < n; i++) {
      if (m[e[i] - 1] >= 1000000 && pr[e[i] - 1] == 0) {
        cout << e[i] << endl;
        pr[e[i] - 1] = 1;
        na = 0;
      }
    }
    if (na) cout << "NA\n";
  }
  return 0;
}
