using System;

public class Program

{

    public static void Main()

    {

        int npm;

        string angka;

        Console.WriteLine(" Masukkan NPM Anda :");

        angka = Console.ReadLine();

        npm = Convert.ToInt32(angka);

        switch (npm)

        {

            case 1831010:

                Console.WriteLine("Vendy");

                break;

            case 1831012:

                Console.WriteLine("Robin");

                break;

            case 1831013:

                Console.WriteLine("Donny");

                break;

            case 1831014:

                Console.WriteLine("Justin");

                break;

            case 1831015:

                Console.WriteLine("Nonius Alvares");

                break;

            case 1831016:

                Console.WriteLine("Putri Sertianingsih");

                break;

            case 1831022:

                Console.WriteLine("Ariq Bimantoro");

                break;

            case 1831023:

                Console.WriteLine("Daniel Lim");

                break;

            case 1831025:

                Console.WriteLine("Defryn Fratelry");

                break;

            case 1831026:

                Console.WriteLine("Nowita Wati");

                break;

            default :

                Console.WriteLine(" Unregistered ");

                break;

        }

    }

}