#include <bits/stdc++.h>
using namespace std;
int main() {
  int n;
  while (1) {
    cin >> n;
    if (n == 0) return 0;
    int count = 0;
    multimap<int, int> sl;
    for (int i = 0; i < n; ++i) {
      int sn, t, v;
      cin >> sn >> t >> v;
      sl.insert(pair<int, int>(sn, t * v));
    }
    map<int, int>::iterator it = sl.begin();
    while (it != sl.end()) {
      if ((*it).second >= 1000000) {
        cout << (*it).first << endl;
        ++count;
      }
      ++it;
    }
    if (count == 0) cout << "NA" << endl;
  }
}
