#include <bits/stdc++.h>
using namespace std;
int main() {
  int n, num, count;
  long long int p, q, nu[5000];
  while (true) {
    cin >> n;
    if (n == 0) {
      break;
    }
    for (int i = 0; i < 5000; i++) {
      nu[i] = 0;
    }
    for (int i = 0; i < n; i++) {
      cin >> num >> p >> q;
      nu[num] += p * q;
    }
    count = 0;
    for (int i = 1; i < 5000; i++) {
      if (nu[i] > 999999) {
        cout << i << endl;
        count++;
      }
    }
    if (count == 0) {
      cout << "NA" << endl;
    }
  }
  return 0;
}
