#include <iostream>
using namespace std;

int main()
{
	int Line = 0, Temp;
	bool Exist;
	while (cin >> Line, Line) {
		//Initialize
		double EmployObj[4001] = { 0 };
		double SellingPrice = 0, SalesVolume = 0;
		Exist = true;

		do {
			cin >> Temp >> SellingPrice >> SalesVolume;
			EmployObj[Temp] += SellingPrice * SalesVolume;
		} while (--Line);
		for (int count = 1; count <= 4001; count++) {
			if (EmployObj[count] >= 1000000) {
				cout << count << endl;
				Exist = false;
			}
		}
		if (Exist) {
			cout << "NA" << endl;
		}
	}
	return 0;
}