using System;
using System.Linq;

static class Const
{
   public const int employeeCount = 4000;
}

class MainClass
{
   static void Main(string[] args)
   {
      var sales = new int[Const.employeeCount];
      
      var n = int.Parse(Console.ReadLine());
      for (int i = 0; i < n; i++)
      {
         string[] datas = Console.ReadLine().Split(' ');
         var e = int.Parse(datas[0]);
         var p = int.Parse(datas[1]);
         var q = int.Parse(datas[2]);

         sales[e] += p * q;
      }
      var overEmployeeIndex = from index in Enumerable.Range(0, Const.employeeCount)
                              where sales[index] >= 1000000
                              select index;
      if (overEmployeeIndex.Count() == 0)
      {
         Console.WriteLine("NA");
      }
      else 
      {
         foreach (var index in overEmployeeIndex)
         {
            Console.WriteLine(index.ToString());
         }
      }
   }
}