import java.util.*;
import java.math.*;
public class PrepOne
{
	public static void main(String[] args)
	{
		Vector v = new Vector ();
		for(int i = 0; i < args.length; i++)
		{
			v.addElement (args[i]);
			v.addElement (new Integer(i));
			// v.addElement (i); // error
		}
		for(int i = 0; i < v.size (); i++)
		{
			System.out.println (v.elementAt (i));
		}
		
	}
}