//KL

import java.text.*;
import java.io.*;

public class payroll {
    public static void main(String args[]) throws Exception {
        Scanner scr=new Scanner(System.in);
        System.out.print("Please enter employee ID: ");
        DecimalFormat Number=new DecimalFormat("#000");
        int empl=scr.nextInt();
        String name=Number.format(empl);
        name=name.concat(".txt");
        Scanner sc2=new Scanner(new File(name));
        String date=sc2.nextLine().toString();
        System.out.print(date);
    }
}