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
//Strings.java
import java.util.Scanner;
class Main
{
	public static void main(String args[])
	{
		Scanner sc=new Scanner(System.in);
        String s=sc.next();
        String t=sc.next();

        System.out.print(t+s);
        sc.close();
    }
}