#include <iostream>
#include <map>

using namespace std;

int main(){
  int n;
  
  while(true){
    cin >> n;
    if(n==0)
      break;
    map<int,int> isi;
    int i, p, q;
    for(int j=0; j<n; j++){
      cin >> i >> p >> q;
      if(isi.find(i)==isi.end())
	isi[i] = p*q;
      else
	isi[i] += p*q;
    }

    map<int,int>::iterator it;
    bool cc = true;
    for(it=isi.begin(); it!=isi.end(); ++it){
      if(it->second >= 1000000){
	cout << it->first << endl;
	cc = false;
      }
    }
    if(cc)
      cout << "NA\n";
    
  }
  return 0;
}