#include<iostream>
#include<map>
#include<string>
using namespace std;
int main(){
	for(;;){
		int n;
		cin >> n;
		if(n == 0) break;
		map<string, int> mpa;
		for(int i = 0; i < n; i++){
			string e;
			int p, q;
			cin >> e;
			cin >> p >> q;
			mpa[e] += p * q;
		}
		map<string, int>::iterator itr;
		bool flag = false;
		for(itr = mpa.begin(); itr != mpa.end(); itr++){
			if(itr->second >= 1e6){
				cout << itr->first << endl;
				flag = true;
			}
		}
		if(flag == false) cout << "NA" << endl;
	}
	return 0;
}