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 Scala (judge verdict: Wrong Answer)

import scala.io.StdIn._

object Main {
  def main(args: Array[String]): Unit = {
    while (true) {
      val n = readLine.toInt
      if (n == 0) return

      var map = scala.collection.mutable.Map[Int, Int]()

      for (i <- 0 until n) {
        val s = readLine.split(' ').map(x => x.toInt)
        val emp = s(0)
        val price = s(1)
        val num = s(2)
        map += emp -> (map.getOrElse(emp, 0) + price * num)
      }
      map.filter(t => t._2 >= 1000000).keys.foreach(println)
    }
  }
}