#include <bits/stdc++.h>
using namespace std;
int main() {
  int bangou, tanka, kosuu;
  int number;
  cin >> number;
  do {
    int man[4000];
    for (int i = 0; i < 4000; i++) {
      man[i] = 0;
    }
    for (int i = 0; i < number; i++) {
      cin >> bangou >> tanka >> kosuu;
      man[bangou] += tanka * kosuu;
    }
    int count = 0;
    for (int i = 0; i < 4000; i++) {
      if (man[i] >= 1000000) {
        cout << i;
        count++;
      }
    }
    if (count == 0) cout << "NA" << endl;
    cin >> number;
  } while (number != 0);
}
