#include <bits/stdc++.h>
using namespace std;
int main() {
  long long money, many, ans[4000] = {0};
  int n, number, over_many = 0, over[4000] = {0};
  while (1) {
    cin >> n;
    if (n == 0) break;
    over_many = 0;
    memset(over, 0, sizeof(over));
    memset(ans, 0, sizeof(ans));
    for (int i = 0; i < n; i++) {
      cin >> number >> money >> many;
      ans[number] += money * many;
      if (ans[number] >= 1000000) {
        if (over[number] == 0) {
          over_many++;
          over[number] = 1;
        }
      }
    }
    if (over_many == 0) {
      cout << "NA" << endl;
    } else {
      for (int k = 0, j = 0; j < over_many; k++) {
        if (over[k] == 1) {
          cout << k << endl;
          j++;
        }
      }
    }
  }
}
