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: Wrong Answer)

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

public class Main {
	private Scanner sc;
	
	public static void main(String[] args) {
		new Main();
	}
	
	public Main() {
		sc = new Scanner(System.in);
		
		int lines = Integer.parseInt(sc.nextLine());
		while (lines != 0) {
			HashMap<String, Integer> nico = new HashMap<String, Integer>();
			
			for (int i = 0; i < lines; i++) {
				String line = sc.nextLine();
				String[] data = line.split(" ");
				
				int sales = Integer.parseInt(data[1]) * Integer.parseInt(data[2]);
				if (nico.containsKey(data[0]) == true) {
					nico.put(data[0], nico.get(data[0]) + sales);
				} else {
					nico.put(data[0], sales);
				}
			}
			
			boolean na = true;
			for (String key : nico.keySet()) {
				if (nico.get(key) >= 1000000) {
					System.out.println(key);
					na = false;
				}
			}
			if (na == true) System.out.println("NA");
			
			lines = Integer.parseInt(sc.nextLine());
		}
	}
}