#include <iostream>
using namespace std;

class CMem {
public :
	CMem() { m_check = false; m_sale = 0; m_rank = 0; }
	void Idata(long long sale) { m_sale += sale; m_check = true; }
	void Irank(int rank) { m_rank = rank; }
	int Orank() { return m_rank;}
	bool Ocheck() { return m_check; }
	long long Osale() { return m_sale; }
private :
	bool m_check;
	long long m_sale;
	int m_rank;
};

int main(void)
{
	while(1) {
		CMem member[4001];
		bool NA = true;
		int n, id, asale, scale, rank = 1, mrank;
		long long sale;

		cin >> n;
		if(n == 0) break;

		for(int i = 0; i < n; i++) {
			cin >> id >> asale >> scale;
			sale = asale * scale;

			if(member[id].Ocheck() == false) { member[id].Irank(rank++); }
			member[id].Idata(sale);
		}

		mrank = rank - 1;

		for(rank = 1; rank <= mrank; rank++) {
			for(int i = 1; i <= 4000; i++) {
				if(member[i].Orank() == rank && member[i].Osale() >= 1000000) {
					cout << i << endl;
					NA = false;
				}
			}
		}

		if(NA == true) cout << "NA" << endl;
	}
	return 0;
}