Problem:
Score : 100 points

Problem Statement

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.

Sample Input 1

oder atc

Sample Output 1

atcoder

When S = oder and T = atc, concatenating T and S in this order results in atcoder.

Sample Input 2

humu humu

Sample Output 2

humuhumu

Solution in PHP7 (7.0.15) (judge verdict: Accepted)

<?php
//$N = trim(fgets(STDIN));
list($s,$t) =  explode(" ",trim(fgets(STDIN)));
//$A =  explode(" ",trim(fgets(STDIN)));

printf("%s%s\n",$t,$s);