while True:
	n = int(input())
	if n == 0:
		break
	else:
		greatworkers = []
		for i in range(n):
			person, price, number = [int(i) for i in input().split()]
			if person in greatworkers:
				pass
			elif price * number >= 1000000:
				greatworkers.append(str(person))
		if greatworkers == []:
			print('NA')
		else:
			print('\n'.join(greatworkers))