#include <bits/stdc++.h>
using namespace std;
int main() {
  int n;
  long long num, price, value;
  long long total[4001] = {0};
  bool judge;
  while (1) {
    memset(total, 0, sizeof(total));
    cin >> n;
    if (n == 0) break;
    judge = false;
    while (n--) {
      cin >> num >> price >> value;
      total[num] += price * value;
    }
    for (int i = 1; i <= 4001; i++) {
      if (total[i] >= 1000000) {
        cout << i << endl;
        judge = true;
      }
    }
    if (!judge) cout << "NA" << endl;
  }
}
