#include <bits/stdc++.h>
using namespace std;
int main() {
  int n;
  while (cin >> n, n) {
    vector<long long int> ls(4001, 0);
    bool NA = true;
    for (int i = 0; i < n; i++) {
      int a, b, c;
      cin >> a >> b >> c;
      if (ls[a] >= 0) {
        ls[a] += b * c;
        if (ls[a] >= 1000000) {
          cout << a << endl;
          NA = false;
          ls[a] = -1;
        }
      }
    }
    if (NA) cout << "NA" << endl;
  }
  return 0;
}
