import java.util.HashMap;
import java.util.Map;
import java.util.Scanner;

public class Main {

	static Scanner sc = new Scanner(System.in);
	public static void main(String[] args) {
		for (; sc.hasNext();) {
			int n = sc.nextInt();
				if (n == 0) {
					break;
				}
			hasOverMillion(n);
		}

	}

	private static void hasOverMillion(int n) {
		Map<Integer, Long> sale_data = new HashMap<Integer, Long>();

			for (int i = 0; i < n; i++) {
				int e = sc.nextInt(); int p = sc.nextInt(); int q = sc.nextInt();
					if (sale_data.containsKey(e)) {
						sale_data.put(e, sale_data.get(e) + p * q);
					} else {
						sale_data.put(e, (long) (p * q));
					}
			}

			boolean hasOverMillion = false;

			for(int key : sale_data.keySet() ) {
				long value = sale_data.get(key);
					if (value >= 1000000) {

						if (hasOverMillion == false) {
							hasOverMillion = true;
						}

						System.out.println(key);
					}
			}

			if (hasOverMillion == false) {
				System.out.println("NA");
			}


	}

}

