#include <bits/stdc++.h>
using namespace std;
struct data {
  int id;
  long long int sales;
  data(int a, long long int b) : id(a), sales(b) {}
  bool operator<(const data& o) const { return id < o.id; }
};
bool invec(int id, vector<int> v) {
  for (vector<int>::iterator it = v.begin(); it != v.end(); it++) {
    if (*it == id) return true;
  }
  return false;
}
int main() {
  int n;
  while (cin >> n, n) {
    vector<data> ls;
    vector<int> good;
    for (int i = 0; i < n; i++) {
      int a, b, c;
      cin >> a >> b >> c;
      vector<data>::iterator it = ls.begin();
      for (; it != ls.end(); it++) {
        if (it->id == a) {
          it->sales += b * c;
          if (it->sales >= 1000000 && !invec(it->id, good)) {
            good.push_back(it->id);
          }
          break;
        }
      }
      if (it == ls.end()) {
        ls.push_back(data(a, b * c));
        if (b * c >= 1000000 && !invec(a, good)) {
          good.push_back(a);
        }
      }
    }
    if (!good.size()) {
      cout << "NA" << endl;
    } else {
      for (vector<int>::iterator it = good.begin(); it != good.end(); it++) {
        cout << *it << endl;
      }
    }
  }
  return 0;
}
