import java.io.*;
import java.util.Scanner;
class FileReading
{
    public static void main(String[] args)
    {
        Scanner sc= new Scanner(System.in);
        String fname = sc.nextLine();
        File file = new File(fname);
        if(!file.exists()|| !file.isFile())
        {
            System.out.println("File not found or not a valid file");return;
        }
        try(BufferedReader br=new BufferedReader(new FileReader(file)))
        {
            String line;
            int linenumber=1;
            while((line=br.readLine())!=null)
            {
                System.out.println(linenumber+" "+line);
                linenumber++;
            }
        }
        catch(IOException e)
        {
            System.out.println("An error occured while reading the file: "+e.getMessage());
        }
    }
}