#include <iostream>
using namespace std;
struct {long long int sum; bool flg;} p[4000];
int main()
{
	int a, b, c, n, i;
	while (cin >> n && n)
	{
		int m = 0;
		for (i = 0; i < 4000; i++)
			p[i].sum = 0, p[i].flg = false;
		for (i = 0; i < n; i++)
		{
			cin >> a >> b >> c;
			p[a-1].sum += b*c;
		}
		for (i = 0; i < 4000; i++)
		{
			if (p[i].sum >= 1000000)
			{
				p[i].flg = true;
				m++;
			}
		}
		if (m <= 0)
			cout << "NA" << endl;
		else
			for (i = 0; i < 4000; i++)
				if (p[i].flg)
					cout << i+1 << endl;
	}
}