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 C# (judge verdict: Wrong Answer)

using System;
using System.Collections;

public class p0100
{
	p0100 ()
	{
		string str;
		string[] st;
		int n, p;
		bool f;
		ArrayList al = new ArrayList ();
		decimal[] sm = new decimal[4001];
		
		while ((str=Console.ReadLine())!=null && str != "0") {
			n = int.Parse (str);
			f = true;
			for (int i = 0; i < 4001; ++i)
				sm [i] = 0;
			
			while (0 < n--) {
				st = (Console.ReadLine ()).Split (' ');
				p = int.Parse (st [0]);
				
				sm [p] += decimal.Parse (st [1]) * decimal.Parse (st [0]);
				if (!al.Contains (p))
					al.Add (p);
			}
			
			foreach (int i in al)
				if (sm [i] >= 1000000) {
					Console.WriteLine ("{0}", i);
					f = false;
				}
			if (f)
				Console.WriteLine ("NA");
			al.Clear();
		}
	}
	
	public static int Main(string[] args){
		new p0100();
		return 0;
	}
}