#include <iostream>
#include <cstring>
#include <map>
using namespace std;

int main() {
	int n;
	while(std::cin >> n){
		if(!n){
			return 0;
		}
		std::map<int, long long> sales;
		while(n--){
			int id;
			long long unit, num;
			std::cin >> id >> unit >> num;
			sales[id] += unit * num;
		}
		map<int, long long>::iterator it;
		bool found = false;
		for(it = sales.begin(); it != sales.end(); it++){
			if(it->second >= 1000000){
				found = true;
				std::cout << it->first << std::endl;
			}
		}
		if(!found){
			std::cout << "NA" << std::endl;
		}
	}
	return 0;
}