Given are two strings S and T consisting of lowercase English letters. Concatenate T and S in this order, without space in between, and print the resulting string.

Constraints

* S and T are strings consisting of lowercase English letters.
* The lengths of S and T are between 1 and 100 (inclusive).

Input

Input is given from Standard Input in the following format:


S T


Output

Print the resulting string.

Examples

Input

oder atc


Output

atcoder


Input

humu humu


Output

humuhumu
import java.util.*;
import java.lang.*;
import java.io.*;
public class Main
 {
	public static void main (String[] args)
	 {
	 Scanner s=new Scanner(System.in);
	 String a=s.next();
	 String b=s.next();
	 System.out.println(b+a);}}