#include <bits/stdc++.h>
using namespace std;
int main() {
  unsigned long f = 0;
  unsigned long x, y, z, i = 0;
  unsigned long a[4010];
  unsigned long b[4010];
  unsigned long c[4010];
  unsigned long s[4010];
  while (1) {
    z = 0;
    cin >> x;
    if (x == 0) break;
    for (y = 0; y < x; y++) cin >> a[y] >> b[y] >> c[y];
    for (y = 0; y < x; y++) s[y] = a[y];
    for (y = 0; y < x - 1; y++)
      for (i = y + 1; i < x; i++)
        if (a[y] == s[i]) {
          b[y] += b[i];
          c[y] += c[i];
          b[i] = 0;
          c[i] = 0;
        }
    for (y = 0; y < x; y++) {
      if (1000000 <= b[y] * c[y]) {
        z++;
        cout << a[y] << endl;
      }
    }
    if (z == 0) cout << "NA" << endl;
  }
  return 0;
}
