#include <bits/stdc++.h>
using namespace std;
int main() {
  int flag[4001];
  int n, c, num, val, sale, na;
  pair<int, int> hoge[4001];
  while (1) {
    cin >> n;
    if (n == 0) break;
    c = 1;
    na = 1;
    memset(flag, 0, sizeof(int) * 4001);
    for (int i = 0; i < n; i++) {
      cin >> num >> val >> sale;
      if (flag[num] == 0) {
        flag[num] = c;
        hoge[c].first = num;
        hoge[c].second = val * sale;
        c++;
      } else {
        hoge[flag[num]].second += val * sale;
      }
    }
    for (int i = 1; i < c; i++) {
      if (hoge[i].second >= 1000000) {
        na = 0;
        cout << hoge[i].first << endl;
      }
    }
    if (na == 1) cout << "NA" << endl;
  }
  return 0;
}
