#include <bits/stdc++.h>
using namespace std;
int main() {
  map<int, int> total;
  int d, num, item, ko, cont = 0;
  bool ok;
  while (cin >> d, d) {
    for (int i = 0; i < d; i++) {
      cin >> num >> item >> ko;
      item *= ko;
      if (total.count(num)) {
        continue;
      } else {
        total.insert(make_pair(num, item));
      }
    }
    ok = false;
    map<int, int>::iterator it;
    for (it = total.begin(); it != total.end(); it++) {
      if ((*it).second >= 1000000) {
        cout << (*it).first << endl;
        ok = true;
      }
    }
    if (ok == false) {
      cout << "NA" << endl;
    }
    total.clear();
  }
}
