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