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

int main(){
	int n,a,b,c,flag;
	map<int, long long int> m;
	while (cin >> n, n){
		m.clear();
		flag = 0;
		for (int i = 0; i < n; i++){
			cin >> a >> b >> c;
			m[a] += (long long int)b * (long long int)c;
		}
		map<int, long long int>::iterator it = m.begin();
		while (it != m.end()){
			if ((*it).second >= 1000000ll){
				flag = 1;
				cout << (*it).first << endl;
			}
			it++;
		}
		if (!flag) cout << "NA" << endl;
	}
	return 0;
}