#include <bits/stdc++.h>
using namespace std;
int main() {
  while (true) {
    int n;
    cin >> n;
    if (n == 0) break;
    vector<pair<int, long long> > E;
    for (int i = 0; i < n; i++) {
      int a, b, c;
      cin >> a >> b >> c;
      int j;
      for (j = 0; j < (int)E.size(); j++)
        if (E[j].first == a) break;
      if (j == (int)E.size()) E.push_back(make_pair(a, 0));
      E[j].second += b * c;
    }
    bool f = false;
    for (int i = 0; i < (int)E.size(); i++)
      if (E[i].second >= 1000000) cout << E[i].first << endl, f = true;
    if (!f) cout << "NA" << endl;
  }
}
