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)

using System;
using System.Linq;
using System.Text;
using System.Collections.Generic;

namespace AOJ2
{
    class Program
    {
        class Member
        {
            public int Number { get; set; }
            public long Uriage { get; set; }

            public Member(int Number, long Uriage)
            {
                this.Number = Number;
                this.Uriage = Uriage;
            }
        }

        static void Main(string[] args)
        {
            List<string> resultList = new List<string>();

            while (true)
            {
                int num = int.Parse(Console.ReadLine());
                if (num == 0)
                {
                    break;
                }

                List<Member> memberList = new List<Member>();

                for (int i = 0; i < num; i++)
                {
                    long[] records = Console.ReadLine().Split(' ').Select(s => long.Parse(s)).ToArray();
                    if (memberList.Where(s => s.Number == records[0]).Count() == 0)
                    {
                        memberList.Add(new Member((int)records[0], records[1] * records[2]));
                    }
                    else
                    {
                        memberList.Where(s => s.Number == records[0]).ToList()[0].Uriage += records[1] * records[2];
                    }
                }


                if (memberList.Where(s => s.Uriage >= 1000000).Count() == 0)
                {
                    resultList.Add("NA");
                }
                else
                {
                    foreach (Member m in memberList.Where(s => s.Uriage >= 1000000).ToArray())
                    {
                        resultList.Add(m.Number.ToString());
                    }
                }

            }


            foreach (string s in resultList)
            {
                Console.WriteLine(s);
            }


        }

    }
}