#include <iostream>
#include <vector>

int main(){
  int n,sn,p,c;
  std::vector<int> v;
  while(std::cin>>n){
    if(!n)return 0;
    for(;n;n--){
      std::cin>>sn>>p>>c;
      std::vector<int>::iterator it=find(v.begin(),v.end(),sn);
      if(p*c>=1000000){
	if(it==v.end()){
	  v.push_back(sn);
	}
    }
    if(v.empty())std::cout<<"NA"<<std::endl;
    else{
    std::vector<int>::iterator it = v.begin();
    while(it!=v.end()){
      std::cout<<*it<<std::endl;
      it++;
    }
    v.clear();
    }
  }
}