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.HashSet;
import java.util.Scanner;
import java.util.Set;

public class Main {
	public static void main(String[] args) {
		Scanner scanner = new Scanner(System.in);
		while (true) {
			int n = scanner.nextInt();
			if (n == 0) {
				break;
			}
			boolean flag = false;
			Set<Integer> list = new HashSet<Integer>();
			long[] num = new long[4001];
			for (int i = 0; i < n; i++) {
				int a = scanner.nextInt();
				long b = scanner.nextInt();
				long c = scanner.nextInt();
				num[a] += b * c;
				list.add(a);

			}
			for (int t : list) {
				if (num[t] >= 1000000) {
					flag = true;
					System.out.println(t);
				}
			}
			if (!flag) {
				System.out.println("NA");
			}
		}
	}
}