#include <bits/stdc++.h>
using namespace std;
int main() {
  int n;
  while (cin >> n, n) {
    int c = 0, data[4000], no[n];
    for (int i = 0; i < 4000; ++i) data[i] = 0;
    for (int i = 0; i < n; ++i) {
      no[i] = 0;
      int n2, tan, num;
      cin >> n2 >> tan >> num;
      if (!data[n2]) no[i] = n2;
      data[n2] += tan * num;
    }
    for (int i = 0; i < n; ++i) {
      int n2 = no[i];
      if (data[n2] >= 1000000) {
        cout << n2 << endl;
        c++;
      }
    }
    if (!c) cout << "NA" << endl;
  }
}
