#include <bits/stdc++.h>
using namespace std;
int main() {
  long long bangou, tanka, kosuu;
  long long number;
  cin >> number;
  long long kuso[number];
  do {
    long long man[4000];
    for (int i = 0; i < 4000; i++) {
      man[i] = 0;
    }
    for (int i = 0; i < number; i++) {
      kuso[i] = 0;
    }
    for (int i = 0; i < number; i++) {
      cin >> bangou >> tanka >> kosuu;
      man[bangou - 1] += tanka * kosuu;
      kuso[i] = bangou;
    }
    int count = 0;
    if (man[kuso[0] - 1] >= 1000000) {
      cout << kuso[0] << endl;
      count++;
    }
    for (int i = 1; i < number; i++) {
      int tmp = 0;
      for (int j = 0; j < i; j++) {
        if (kuso[i] == kuso[j]) {
          tmp++;
          break;
        }
      }
      if (tmp == 0 && man[kuso[i] - 1] >= 1000000) {
        cout << kuso[i] << endl;
        count++;
      }
    }
    if (count == 0) cout << "NA" << endl;
    cin >> number;
  } while (number != 0);
}
