Problem:
Sale Result

There is data on sales of your company. Your task is to write a program which identifies good workers.

The program should read a list of data where each item includes the employee ID i, the amount of sales q and the corresponding unit price p. Then, the program should print IDs of employees whose total sales proceeds (i.e. sum of p × q) is greater than or equal to 1,000,000 in the order of inputting. If there is no such employees, the program should print "NA". You can suppose that n < 4000, and each employee has an unique ID. The unit price p is less than or equal to 1,000,000 and the amount of sales q is less than or equal to 100,000.

Input

The input consists of several datasets. The input ends with a line including a single 0. Each dataset consists of:

n (the number of data in the list)
i p q
i p q
:
:
i p q

Output

For each dataset, print a list of employee IDs or a text "NA"

Sample Input

4
1001 2000 520
1002 1800 450
1003 1600 625
1001 200 1220
2
1001 100 3
1005 1000 100
2
2013 5000 100
2013 5000 100
0

Output for the Sample Input

1001
1003
NA
2013

Solution in JAVA (judge verdict: Accepted)

import java.util.*;

import java.lang.*;

import java.math.*;



public class Main {

	Scanner sc = new Scanner(System.in);

	void run() {

		for (;;) {

			int n = sc.nextInt();

			if (n == 0)

				break;

			boolean na = true;

			int[] order = new int[n];

			BigInteger[] map = new BigInteger[4001];

			boolean[] end = new boolean[4001];

			for(int i =0;i<4001;i++){

				map[i] = new BigInteger("0");

			}

			for (int i = 0; i < n; i++) {

				int b = sc.nextInt();

				long at = sc.nextLong();

				long p = sc.nextLong();

				map[b] = map[b].add(BigInteger.valueOf(at * p));

				order[i] = b;

			}



			for (int i = 0; i < n; i++) {

				if (order[i] != 0) {

					int e = order[i];

					if (!end[e]) {

						if (map[e].compareTo(BigInteger.valueOf(1000000))>=0) {

							end[e] = true;

							na = false;

							System.out.println(e);

						}

					}

				}

			}

			if (na)

				System.out.println("NA");

		}

	}



	public static void main(String[] args) {

		Main m = new Main();

		m.run();

	}

}