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.*;
public class Main {
	static Scanner sc = new Scanner(System.in);
	static int[]workers;
	static int value, number, n;
	public static void main(String[] args) {
		while(read()){
			solve();
		}
	}
	static boolean read(){
		n = sc.nextInt();
		if(n == 0)return false;
		workers = new int[4001];
		int index = 0;
		for(int i = 0; i < n; i++){
			index = sc.nextInt();
			value = sc.nextInt();
			number = sc.nextInt();
			workers[index] += value*number;
		}
		return true;
	}
	static void  solve(){
		int flag = 0;
		for(int index = 1; index < workers.length; index++){
			if(workers[index] >= 1000000){
				System.out.println(index);
				flag++;
			}
		}
		if(flag > 0){
			System.out.println("NA");
		}
	}
}