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.Scanner;

public class Main {

	public static void main(String[] args) {
		// TODO Auto-generated method stub
		long money[] = new long[4001];
		boolean flag[] = new boolean[4001];
		int order[] = new int[4001];
		
		final long threshold = 1000000;
		Scanner scanner = new Scanner(System.in);
		
		int n;
		
		n = scanner.nextInt();
		while (n != 0) {
			for(int i = 0; i < 4001; i++) {
				money[i] = 0;
				order[i] = 0;
				flag[i] = false;
			}
			int ord = 0;
			
			for(int i = 0; i < n; i++) {
				int id = scanner.nextInt();
				long cost = scanner.nextLong();
				long num = scanner.nextLong();
				
				money[id] += cost * num;
				
				if (flag[id] == false) {
					order[ord] = id;
					ord++;
					flag[id] = true;
				}
			} 
			
			boolean noOneFlag = true;
			
			for(int i = 0; i < 4001; i++) {
				if (money[order[i]] >= threshold) {
					System.out.println(order[i]);
					noOneFlag = false;
				}
			}
			
			if (noOneFlag == true) {
				System.out.println("NA");
			}
			n = scanner.nextInt();
		}
	}
}