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

int main() {
	int n;
	while (cin >> n, n) {
		int e;
		long long p, q;
		long long number[4000];
		vector<int>v;
		for (int i = 0;i < 4000;i++) {
			number[i] = 0;
		}

		for (int i = 0;i < n;i++) {
			cin >> e >> p >> q;
			number[e - 1] += p*q;
		}

		for (int i = 0;i < 4000;i++) {
			if (number[i] >= 1000000) {
				v.push_back((i + 1));
			}
		}

		if (v.empty()) { cout << "NA" << endl; }
		else {
			int a = v.size();
			for (int j = 0;j < a;j++) {
				cout << v[j] << endl;
			}
		}
	}
	return 0;
}