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.*;
import java.lang.*;
import java.math.*;
import java.io.*;

import static java.lang.Math.*;
import static java.util.Arrays.*;

public class Main{

	Scanner sc;

	static final int INF=1<<28;
	static final double EPS=1e-9;

	class W{
		int id;
		int order;
		long m=0;

		W(int id, int order){
			this.id=id;
			this.order=order;
		}
	}

	void run(){
		sc=new Scanner(System.in);
		for(;;){
			int n=sc.nextInt();
			if(n==0)
				break;
			int order=0;
			HashMap<Integer, W> map=new HashMap<Integer, W>();
			for(int i=0; i<n; i++){
				int id=sc.nextInt();
				int a=sc.nextInt();
				int b=sc.nextInt();
				if(!map.containsKey(id))
					map.put(id, new W(id, order++));
				map.get(id).m+=a*b;
			}
			W[] ws=map.values().toArray(new W[0]);
			sort(ws, new Comparator<W>(){
				@Override
				public int compare(W w1, W w2){
					return w1.order-w2.order;
				}
			});
			boolean f=false;
			for(W w : ws){
				if(w.m>=1000000){
					println(w.id+"");
					f=true;
				}
			}
			if(!f)
				println("NA");
		}
		sc.close();
	}

	void print(String s){
		System.out.print(s);
	}

	void println(String s){
		System.out.println(s);
	}

	public static void main(String[] args){
		new Main().run();
	}
}