/* package whatever; // don't place package name! */

import java.util.*;
import java.lang.*;
import java.io.*;

/* Name of the class has to be "Main" only if the class is public. */
class Ideone
{
	public static void main (String[] args) throws java.lang.Exception
	{
	    Scanner in = new Scanner(System.in);
	    System.out.println(in.next()); // prints hello
	    System.out.println(in.next()); // prints world
	    in.close();
	}
}