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 sc = new Scanner(System.in);

    for(int i=1; sc.hasNext(); i++){
        System.out.println(i+" "+sc.nextLine());
    }
    sc.close();
}

}