#include <bits/stdc++.h>
using namespace std;
int main() {
  int n;
  while (cin >> n, n) {
    long long s[4000] = {0}, p, q;
    int e;
    for (int i = 0; i < n; i++) {
      cin >> e >> p >> q;
      s[e - 1] += (p * q);
    }
    bool f = false;
    for (int i = 0; i < 4000; i++) {
      if (s[i] >= 1000000) {
        cout << i + 1 << endl;
        f = true;
      }
    }
    if (!f) {
      cout << "NA" << endl;
    }
  }
  return 0;
}
