#include<iostream>
#include<array>
#include<vector>
using namespace std;

int main()
{
	array<int, 4000> ar = {};
	vector<int> ans;
	int n,e,p,q;
	
	while (true) {
		cin >> n;
		ar.fill(0);
		if (!n) {
			break;
		}

		bool isNA = true;
		for (int i = 0; i < n; ++i) {
			cin >> e >> p >> q;
			ar[e] += p*q;
		}
		for (int i = 0; i < 4000;++i) {
			if (ar[i] >= 1000000) {
				ans.push_back(i);
				isNA = false;
			}
		}
		if (isNA) {
			ans.push_back(-1);
		}

	}

	for (auto it : ans) {
		if (it != -1) {
			cout << it;
		}
		else {
			cout << "NA";
		}

		if (it != *ans.end()) {
			cout << endl;
		}
	}
	return 0;
}