#include <iostream>
#include <vector>
using namespace std;

int main() {
  int n;

  while(cin >> n, n) {
    vector<int> ans;
    long long int e, p, m;

    for(int i = 0; i < n; i++) {
      cin >> e >> p >> m;
      if(p*m >= 1000000) {
	bool b = true;
	auto it = ans.begin(); 
	while(it != ans.end()) {
	  if(*it == e) b = false;;
	  it++;
	}
	if(b) ans.push_back(e);
      }
    }
    
    if(ans.empty()) {
      cout << "NA" << endl;
    } else {
      auto it = ans.begin();
      while(it != ans.end()) {
	cout << *it << endl;
	it++;
      }
    }
  }
}