public class Solution {

public static void main(String[] args) {
    int i = 1;
    ArrayList<String> light = new ArrayList<>();
    String EOF = "end-of-file";         
    Scanner scan = new Scanner(System.in);
    while (scan.hasNextLine()){

        String token = scan.nextLine();
        if(token.toLowerCase().contains(EOF.toLowerCase())){
            light.add(token);
            break;
        }
        light.add(token);
    }

    for(String line : light){            
        System.out.println( i + " " + line);
        i++;
    }


            scan.close();
       }