#include <bits/stdc++.h>
using namespace std;
int main() {
  int n;
  while (cin >> n, n) {
    int a;
    long long b, c;
    map<int, long long> sale;
    sale.clear();
    bool f = true;
    while (n--) {
      cin >> a >> b >> c;
      sale[a] += b * c;
    }
    for (map<int, long long>::iterator pos = sale.begin(); pos != sale.end();
         pos++) {
      if (pos->second >= 1000000) {
        cout << pos->first << endl;
        f = false;
      }
    }
    if (f) {
      cout << "NA" << endl;
    }
  }
  return 0;
}
