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.*;

public class Main {

	public static void main(String[] args) {
		Scanner sc = new Scanner(System.in);

		while(true){
			int n = sc.nextInt();
			if(n==0)break;
			int[] num = new int[n];
			long[] sum = new long[n];
			
			for(int i=0;i<n;i++){
				int a = sc.nextInt();
				long b = sc.nextLong();
				long c = sc.nextLong();
				boolean flag = true;
				for(int j=0;j<i;j++){
					if(num[j]==0)break;
					if(a==num[j]){
						sum[j] += b*c;
						flag = false;
					}
				}
				if(flag==true){
					num[i] = a;
					sum[i] += b*c;
				}
				
			}
			
			boolean na = true;
			for(int i=0;i<n;i++){
				if(sum[i]>=1000000){
					System.out.println(num[i]);
					na = false;
				}
			}
			if(na==true)System.out.println("NA");
			
		}
	}
}