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);

    int numberline = 1;
    String n = null;
    while (sc.hasNextLine()) {
        n = sc.nextLine();
        System.out.println(numberline + " " + n);

        numberline++;


    }
}

}