#include <bits/stdc++.h>
using namespace std;
int main() {
  int n, id, val, num, cnt;
  long long member[4000];
  int index[4000];
  while (cin >> n) {
    if (!n) break;
    cnt = 0;
    memset(member, -1, sizeof(member));
    memset(index, -1, sizeof(index));
    for (int i = 0; i < n; ++i) {
      cin >> id >> val >> num;
      if (member[id - 1] == -1) {
        index[cnt] = id - 1;
        ++cnt;
        member[id - 1] += 1 + val * num;
      } else {
        member[id - 1] += val * num;
      }
    }
    bool flag = false;
    for (int i = 0; i < cnt; ++i) {
      if (member[index[i]] >= 1000000) {
        cout << index[i] + 1 << endl;
        flag = true;
      }
    }
    if (!flag) cout << "NA" << endl;
  }
}
