#include <bits/stdc++.h>
using namespace std;
int main(void) {
  int n;
  while (cin >> n, n) {
    int d[4000];
    bool f = false;
    fill(d, d + 4000, 0);
    int no, m, k;
    for (int i = 0; i < n; i++) {
      cin >> no >> m >> k;
      d[no - 1] += m * k;
    }
    for (int i = 0; i < 4000; i++)
      if (d[i] >= 1000000) {
        cout << i + 1 << endl;
        f = 1;
      }
    if (!f) cout << "NA" << endl;
  }
  return 0;
}
