#include<iostream>
#include<vector>
#include<algorithm>
#include<functional>

using namespace std;

int main()
{
	int number, value, value_num;
	int num_data;
	int data[4000];
	
 /**Input**/
	while (true){
		bool NA = false;

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

		for (int ix = 0; ix != num_data; ++ix){
			cin >> number;
			cin >> value >> value_num;
			data[number] += value * value_num;
		}

		for (int ix = 0; ix != 4000; ++ix){
			if (data[ix] >= 1000000){
				cout << ix << endl;
				NA = true;
			}
		}
		if (!NA)
			cout << "NA" << endl;
	}

	return 0;
}