#include <bits/stdc++.h>
using namespace std;
int main() {
  int n, num, price, amount;
  while (cin >> n && n) {
    map<int, long long> m;
    vector<int> v;
    while (n--) {
      cin >> num >> price >> amount;
      long long sum = price * amount;
      if (m.find(num) != m.end())
        m[num] += sum;
      else
        m[num] = sum;
    }
    for (map<int, long long>::iterator it = m.begin(); it != m.end(); ++it) {
      if ((*it).second >= 1000000) v.push_back((*it).first);
    }
    if (v.size() != 0)
      for (int i = 0; i < v.size(); ++i) cout << v[i] << "\n";
    else
      cout << "NA\n";
  }
  return 0;
}
