#include <bits/stdc++.h>
int main(void) {
  int n, e, p, q;
  int employee[4000] = {0};
  while (std::cin >> n) {
    if (n == 0) {
      break;
    }
    while (n--) {
      std::cin >> e >> p >> q;
      employee[e - 1] += (p * q);
    }
    int cnt = 0;
    for (int i = 0; i < 4000; ++i) {
      cnt += (employee[i] >= 1000000);
    }
    if (cnt == 0) {
      std::cout << "NA" << std::endl;
    } else {
      for (int i = 0; i < 4000; ++i) {
        if (employee[i] >= 1000000) {
          employee[i] = 0;
          std::cout << i + 1 << std::endl;
        }
      }
    }
  }
  return 0;
}
