#include <bits/stdc++.h>
using namespace std;
int main() {
  int n, num, mn, nm, mon;
  while (cin >> n, n) {
    int c = 0, sc[4001], cn = 0, cc = 0;
    map<int, int> maps;
    for (int i = 0; i < n; i++) {
      int cnt = 0, j = 0;
      cin >> num >> mn >> nm;
      mon = mn * nm;
      maps[num] += mon;
      for (; j < c; j++) {
        if (sc[j] == num) cn++;
      }
      if (cn == 0 || j == 0) {
        sc[c] = num;
        c++;
      }
    }
    for (int i = 0; i < c; i++) {
      if (maps[sc[i]] >= 1000000) {
        cout << sc[i] << endl;
        cc++;
      }
    }
    if (cc == 0) cout << "NA" << endl;
  }
  return 0;
}
