import java.io.*;
import java.util.*;
import java.text.*;
import java.math.*;
import java.util.regex.*;

public class Solution {
    public static void main(String[] args) {
        Scanner myObj = new Scanner(System.in);
        for(int i=1;myObj.hasNext();i++) {
            if(myObj.hasNext() == true) {
                 System.out.println(i + " " + myObj.nextLine());
            } else{
                break;
            }
        }
    }
}