#include <bits/stdc++.h>
using namespace std;
int main() {
  unsigned long long all[4001] = {};
  unsigned long long code, a, b, n, i, j;
  while (1) {
    j = 0;
    for (i = 0; i < 4001; i++) {
      all[i] = 0;
    }
    cin >> n;
    if (n == 0) {
      break;
    }
    for (i = 0; i < n; i++) {
      cin >> code >> a >> b;
      all[code] += a * b;
    }
    for (i = 0; i < 4001; i++) {
      if (all[i] >= 1000000) {
        cout << i << endl;
        j++;
      }
    }
    if (j == 0) {
      cout << "NA" << endl;
    }
  }
}
