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: Accepted)

/*AOJ  Volume1-0100*/
using System;
using System.Collections.Generic;

public class Hello{
    public static void Main(){
        int DataNum;
        List<Employee> Employees = new List<Employee>();
        string[] InputData;
        int ID;
        long Price, Qutantity;

        
        while(true){
            
            DataNum = int.Parse(Console.ReadLine());
            if(DataNum == 0){
                break;
            }
        
            Employees.Clear();
            
            for(int i = 0; i < DataNum; i++){
                InputData = Console.ReadLine().Split(' ');
                
                ID = int.Parse(InputData[0]);        
                Price = long.Parse(InputData[1]);
                Qutantity = long.Parse(InputData[2]);
                
                int n;
                for(n = 0; n < Employees.Count; n++){
                    if(Employees[n].ID == ID){
                        Employees[n].SalesAdd(Price * Qutantity);
                    }
                }
                if(n == Employees.Count){
                    Employees.Add(new Employee(ID, Price * Qutantity));
                }
            }
            
            int OneMegaOverNum = 0;
            for(int i = 0; i < Employees.Count; i++){
                if(Employees[i].Sales >= Consts.QUOTA){
                    Console.WriteLine(Employees[i].ID);
                    OneMegaOverNum++;
                }
            }
            if(OneMegaOverNum <= 0) Console.WriteLine("NA");

        }
    }
}

public static class Consts{
    public static long QUOTA = 1000000;
}

public class Employee{
    public int ID{get;set;}
    public long Sales{get;set;}
    public Employee(int InitID, long InitSales){
        ID = InitID;
        Sales = InitSales;
    }
    public void SalesAdd(long InputSales){
        Sales += InputSales;
    }
}