Language: Java

public class Main
{

    public static void main(String[] args) throws IOException
    {
        int overCount = 0;
        BufferedReader bReader = new BufferedReader(new InputStreamReader(System.in));

        int n, count;
        int[] emp;

        emp = new int[4000];
        
        clearAry(emp);
        
        while ( (count = strRead()) != 0 )
        {
            n = 0;

            while ( n < count )
            {
                String str = bReader.readLine();
                String[] strEd = str.split(" ");

                int empCnt = Integer.parseInt(strEd[0]);
                int emp_price = Integer.parseInt(strEd[1]);
                int emp_q = Integer.parseInt(strEd[2]);

                emp[empCnt] = emp[empCnt] + emp_price * emp_q;
                n++;
            }
            for ( int i = 0; i < 4000; i++ )
            {
                if ( emp[i] > 1000000 )
                {
                    System.out.println(i + 1);
                    overCount++;
                }
            }

            if ( overCount == 0 )
            {
                System.out.println("NA");
            }
            overCount = 0;
            clearAry(emp);
        }

    }

    public static int strRead() throws IOException
    {

        BufferedReader br_dataCount = new BufferedReader(new InputStreamReader(System.in));
        return Integer.parseInt(br_dataCount.readLine());
    }

    public static void clearAry(int[] ar)
    {
        for ( int i = 0; i < 4000; i++ )
        {
            ar[i] = 0;
        }
    }
}

Compiler output:
Main.java:4: error: cannot find symbol
    public static void main(String[] args) throws IOException
                                                  ^
  symbol:   class IOException
  location: class Main
Main.java:51: error: cannot find symbol
    public static int strRead() throws IOException
                                       ^
  symbol:   class IOException
  location: class Main
Main.java:7: error: cannot find symbol
        BufferedReader bReader = new BufferedReader(new InputStreamReader(System.in));
        ^
  symbol:   class BufferedReader
  location: class Main
Main.java:7: error: cannot find symbol
        BufferedReader bReader = new BufferedReader(new InputStreamReader(System.in));
                                     ^
  symbol:   class BufferedReader
  location: class Main
Main.java:7: error: cannot find symbol
        BufferedReader bReader = new BufferedReader(new InputStreamReader(System.in));
                                                        ^
  symbol:   class InputStreamReader
  location: class Main
Main.java:54: error: cannot find symbol
        BufferedReader br_dataCount = new BufferedReader(new InputStreamReader(System.in));
        ^
  symbol:   class BufferedReader
  location: class Main
Main.java:54: error: cannot find symbol
        BufferedReader br_dataCount = new BufferedReader(new InputStreamReader(System.in));
                                          ^
  symbol:   class BufferedReader
  location: class Main
Main.java:54: error: cannot find symbol
        BufferedReader br_dataCount = new BufferedReader(new InputStreamReader(System.in));
                                                             ^
  symbol:   class InputStreamReader
  location: class Main
8 errors