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.*;

public class Main {
  public static void main(String[] args) {
          Scanner sc = new Scanner(System.in);
          String num1 = sc.next();
          String num2 = sc.next();
          System.out.println(num2 + num1);
          
          }
  }