#include <bits/stdc++.h>
using namespace std;
int main() {
  int i, j = 0;
  while (true) {
    int n;
    cin >> n;
    if (n == 0) {
      cout << "NA" << endl;
      break;
    } else if (n < 0 || 4000 < n) {
      continue;
    }
    int* a = new int[n];
    int* b = new int[n];
    int* c = new int[n];
    for (i = 0; i < n; i++) {
      cin >> a[i] >> b[i] >> c[i];
    }
    for (i = 0; i < n; i++) {
      if (b[i] * c[i] >= 1000000) {
        cout << a[i] << endl;
        j++;
      }
    }
    if (j == 0) {
      cout << "na" << endl;
    }
  }
}
