#include <bits/stdc++.h>
int main() {
  int n;
  while (std::cin >> n) {
    std::vector<int> v;
    if (!n) return 0;
    for (; n; n--) {
      long long int num, price, quantity;
      std::cin >> num >> price >> quantity;
      if (price * quantity >= 1000000) {
        std::vector<int>::iterator it = std::find(v.begin(), v.end(), num);
        if (it == v.end()) v.push_back(num);
      }
    }
    if (!v.size())
      std::cout << "NA" << std::endl;
    else {
      std::vector<int>::iterator it = v.begin();
      while (it != v.end()) {
        std::cout << *it << std::endl;
        it++;
      }
    }
  }
}
