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

int main() {
	int n;

	while(cin >> n, n) {
		int ID, price, sale;
		int table[4096];
		bool flag = false;
		memset(table, 0, sizeof(table));
		for(int i = 0; i < n; i++) {
			cin >> ID >> price >> sale;
			table[ID] += price * sale;
		}

		for(int i = 0; i < 4096; i++) {
			if(table[i] >= 1000000) {
				cout << i << endl;
				flag = true;
			}
		}

		if(flag)
			cout << "NA" << endl;
	}

	return 0;
}