#include <bits/stdc++.h>
using namespace std;
int main() {
  int n, id, val, num;
  int member[4000];
  while (cin >> n) {
    if (!n) break;
    memset(member, 0, sizeof(member));
    for (int i = 0; i < n; ++i) {
      cin >> id >> val >> num;
      member[id - 1] += val * num;
    }
    bool flag = false;
    for (int i = 0; i < 4000; ++i) {
      if (member[i] >= 1000000) {
        cout << i + 1 << endl;
        flag = true;
      }
    }
    if (!flag) cout << "NA" << endl;
  }
}
