#include <bits/stdc++.h>
using namespace std;
int main() {
  while (1) {
    int num;
    cin >> num;
    if (num == 0) break;
    int employer[4001][2] = {0};
    int e, p, q;
    int ans[4001] = {0};
    int count = -1;
    for (int i = 0; i < num; i++) {
      cin >> e >> p >> q;
      ans[i] = e;
      employer[e][0] = employer[e][0] + (p * q);
      if (employer[e][0] >= 1000000 && employer[e][1] != 1) {
        employer[e][1] = 1;
        count++;
        ans[count] = e;
      }
    }
    if (count >= 0) {
      for (int i = 0; i <= count; i++) {
        cout << ans[i] << endl;
      }
    } else {
      cout << "NA" << endl;
    }
  }
  return 0;
}
