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.Arrays;
import java.util.Scanner;
public class Main
{
	public static void main(String arg[])
	{
		Scanner in=new Scanner(System.in);
		while(in.hasNext())
		{
			boolean bl=false;
			int n=in.nextInt();
			if(n==0)
				return;
			int a[]=new int[n];
			long b[]=new long[n];
			for(int i=0;i<n;i++)
			{
				a[i]=in.nextInt();
				b[i]=in.nextLong()*in.nextLong();
			}
			boolean ju[]=new boolean[n];
			Arrays.fill(ju, true);
			for(int i=0;i<n;i++)
			{
				for(int j=i+1;j<n;j++)
					if(a[i]==a[j]&&ju[j])
					{
						b[i]=b[i]+b[j];
						ju[j]=false;
					}
			}
			for(int i=0;i<n;i++)
			{
				if(b[i]>=1000000&&ju[i])
				{
					System.out.println(a[i]);
					bl=true;
				}
			}
			if(!bl)
				System.out.println("NA");
		}
	}

}