#include <bits/stdc++.h>
using namespace std;
int main() {
  int n;
  while (cin >> n) {
    if (n == 0) break;
    long long u[4010] = {0};
    for (int i = 0; i < n; i++) {
      long a, b, c;
      cin >> a >> b >> c;
      u[a] += b * c;
    }
    bool b = true;
    for (int i = 1; i < 4001; i++) {
      if (u[i] >= 1000000) {
        cout << i << endl;
        b = false;
      }
    }
    if (b) cout << "NA" << endl;
  }
  return 0;
}
