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.*;

class Main{
    public static void main(String[] args){
    	Scanner scn = new Scanner(System.in);
    	int n;
    	int[] id = new int[4000];
    	int[] score = new int[4000];
    	
    	for(n=scn.nextInt(); n!=0; n=scn.nextInt()){
    		boolean flag1 = true;
    		int num=0;
    		
    		for(int i=0; i<n; i++){
    			boolean flag2 = true;
    			int sales,tmp;
    			
    			tmp = scn.nextInt();
    			sales = scn.nextInt()*scn.nextInt();

    			for(int j=0; j<num; j++)
    				if(id[j] == tmp){
    					score[j] += sales;
    					flag2 = false;
    				}
    			
    			if(flag2){
    				id[num] = tmp;
    				score[num++] = sales;
    			}
    		}
    		
    		for(int i=0; i<num; i++)
    			if(score[i] >= 1000000){
    				flag1 = false;
    				System.out.println(id[i]);
    			}
    		
    		if(flag1)
    			System.out.println("NA");
    		
    		
    	}
    }
}