#include <bits/stdc++.h>
using namespace std;
int main() {
  long long int n, i, price[4000], a, b, c;
  bool flag;
  while (cin >> n && n) {
    flag = false;
    memset(price, '\0', sizeof(price));
    for (i = 0; i < n; ++i) {
      cin >> a >> b >> c;
      price[a - 1] += b * c;
    }
    for (i = 0; i < 4000; ++i) {
      if (price[i] >= 1000000) {
        cout << i + 1 << endl;
        flag = true;
      }
    }
    if (flag == false) cout << "NA" << endl;
  }
  return 0;
}
