#include <bits/stdc++.h>
using namespace std;
int main() {
  int n;
  while (cin >> n) {
    if (n == 0) break;
    long long u[4010] = {0};
    vector<int> l;
    for (int i = 0; i < n; i++) {
      long a, b, c;
      cin >> a >> b >> c;
      u[a] += b * c;
      if (u[a] >= 1000000 && find(l.begin(), l.end(), a) == l.end())
        l.push_back(a);
    }
    for (int i = 0; i < l.size(); i++) {
      cout << l[i] << endl;
    }
    if (!l.size()) cout << "NA" << endl;
  }
  return 0;
}
