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.Hashtable;
import java.util.Scanner;


public class Main{

	public static void main(String[] args) {
		int total = 0, id =0, p=0, q = 0, i=1;
		long mul = 1;
		 Scanner sc = new Scanner(System.in);
		 while(true) {
			 total = sc.nextInt();
			 
			 if(total==0 ) {
				 return;
			 }
			 
			
			 Hashtable<Integer, Long> sales = new Hashtable<Integer, Long>();
			 for(i=1; i<=total; i++) {
				 id = sc.nextInt();
				 p = sc.nextInt();
				 q = sc.nextInt();
				 
				 mul = p*q;
				 if(sales.containsKey(id) ) {
					 if(sales.get(id).longValue() < 1000000) {
					  sales.put(id, mul + sales.get(id).longValue());
					 }
				 } else {
					 sales.put(id, mul );
				 }
				 
				
			 }
			 
			
			 boolean hasMax = false;
			 for (int key : sales.keySet()) {
				 mul = sales.get(key);
				 if(mul >= 1000000 ) {	
					 hasMax = true;
					 System.out.println(key);
				 } 
				}
			  
		 
		     if(hasMax == false) {
				 System.out.println("NA");
			 }
			 
		 }

	}

}