#include <bits/stdc++.h>
int n;
int a[3];
std::vector<std::pair<int, int>> vec;
bool x[4001];
int main() {
  while (1) {
    std::cin >> n;
    if (n == 0) break;
    int count = 0;
    vec.clear();
    std::memset(x, false, sizeof(x));
    for (int i = 0; i < n; ++i) {
      for (int j = 0; j < 3; ++j) std::cin >> a[j];
      if (x[a[0]]) {
        for (int k = 0; k < vec.size(); ++k) {
          if (vec[k].first == a[0]) vec[k].second += a[1] * a[2];
        }
      } else {
        vec.push_back(std::make_pair(a[0], a[1] * a[2]));
        x[a[0]] = true;
      }
    }
    for (auto it = vec.begin(); it != vec.end(); ++it) {
      if ((*it).second >= 1000000) {
        std::cout << (*it).first << std::endl;
        ++count;
      }
    }
    if (count == 0) std::cout << "NA" << std::endl;
  }
  return 0;
}
