#include <iostream>
using namespace std;

int main()
{
	int n;
	
	while (cin >> n, n){
		bool num[4000] = {false}, flag = false;
		int sum[4000] = {0}, m, ex, a;
		int c_num[4000] = {0};
		int c = 0;
		
		for (int i = 0; i < n; i++){
			cin >> m >> ex >> a;
			sum[m] += ex * a;
			
			if (1000000 <= sum[m] && num[m] != true){
				num[m] = true;
				c_num[c] = m;
				c++;
				flag = true;
			}
		}
		
		if (flag){
			for (int i = 0; i < c; i++){
				cout << c_num[i] << endl;
			}
		}
		else {
			cout << "NA" << endl;
		}
	}
	
	return (0);
}