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 void doIt(){
		Scanner sc = new Scanner(System.in);
		int n = sc.nextInt();
		while(n != 0){
			//ハッシュを用意する
			HashMap<Integer,Long> list = new HashMap<Integer,Long>();
			//入力順を記憶する配列
			ArrayList<Integer> inputlist = new ArrayList<Integer>();
			for(int i=0; i < n; i++){
				int num = sc.nextInt();
				long sales = sc.nextLong();
				long price = sc.nextLong();
				long sum = sales * price;
				//すでにあるのならカウント追加
				if(list.containsKey(num)){
					list.put(num, (list.get(num) + sum ));
				}
				else{
					list.put(num, sum);
					//配列に格納
					inputlist.add(num);
				}
			}

			boolean flg = false;
			for(int key: inputlist){
				if(list.get(key) >= 1000000){
					System.out.println(key);
					flg = true;
				}
			}
			if(!flg){
				System.out.println("NA");
			}

			n = sc.nextInt();
		}

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

	}

}