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 stdin = new Scanner(System.in);
	final long[] sum = new long[4000];
	final boolean[] ok = new boolean[4000];
	
	while ( true )  {
	    Arrays.fill(sum, 0);
	    Arrays.fill(ok, false);
	    final int n = stdin.nextInt();
	    if ( n == 0 ) {
		break;
	    }
	    for (int i = 0; i < n; i++) {
		final int cn = stdin.nextInt();
		final long su = stdin.nextLong();
		final long sn = stdin.nextLong();
		if (!ok[cn]) {
		    sum[cn] += su * sn;
		}
		if (sum[cn] >= 1000000L) {
		    ok[cn] = true;
		}
	    }
	    
	    boolean flag = false;
	    for (int i = 0; i < sum.length; i++){
		if (ok[i]){
		    System.out.println(i);
		    flag = true;
		}
	    }
	    if (!flag) {
		System.out.println("NA");
	    }
	}	
    }
}