#include <iostream>
using namespace std;

int main()
{
	int n;

	while (cin >> n, n){
		int e[5000] = {0}, p, q, a;
		bool out = false;
		for (int i = 0; i < n; i++){
			cin >> a >> p >> q;
			e[a] += p * q;
		}
		for (int i = 0; i < 4001; i++){
			if (e[i] >= 1000000){
			 cout << i << endl;
			 out = true;
			}
		}
		if (out == false) cout << "NA" << endl;
	}
	return (0);
}