#include <bits/stdc++.h>
using namespace std;
void solve() {
  int N;
  while (cin >> N, N) {
    map<int, unsigned long long int> Map;
    bool Flag = false;
    unsigned long long int a, b, c;
    for (int i = 0; i < N; ++i) {
      cin >> a >> b >> c;
      Map[a] += b * c;
    }
    for (map<int, unsigned long long int>::iterator Ite = Map.begin();
         Ite != Map.end(); ++Ite) {
      if (Ite->second >= 1000000) {
        cout << Ite->first << endl;
        Flag = true;
      }
    }
    if (!Flag) {
      cout << "NA" << endl;
    }
  }
}
int main() {
  solve();
  return (0);
}
