#include <bits/stdc++.h>
using namespace std;
int main() {
  int n, id, price, num, cnt;
  while (cin >> n, n != 0) {
    vector<int> p(4001, 0);
    vector<int> a;
    while (n--) {
      cin >> id >> price >> num;
      if (find(a.begin(), a.end(), id) == a.end()) a.push_back(id);
      p[id] += price * num;
    }
    cnt = 0;
    for (int i = 0; i < a.size(); i++) {
      if (p[a[i]] >= 1000000) {
        cout << a[i] << endl;
        cnt++;
      }
    }
    if (cnt == 0) cout << "NA" << endl;
  }
  return 0;
}
