import java.lang.*;

public class Echoes{
public static void main(String[]the_truth_is_out_here){
	for(int i=0;
	    i<the_truth_is_out_here.length;
	    i++)
	p(i+": "+the_truth_is_out_here[i]);
}//main
public static void p(String s){System.out.println(s);}
}//Echoes