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 PHP (7.4.4) (judge verdict: Wrong Answer)

<?php
fscanf(STDIN, '%d %d %d', $a, $b, $k);

// 繰り返す場合
$result = 0;
for($i = 0 ; $i <$k; $i++ ) {
  if ($a > 0) { $a -= 1;}
  if ($b > 0) { $b -= 1;}
  if($a < 0 &&  $b < 0) { return; }
}
echo $a.PHP_EOL;
echo $b.PHP_EOL;
?>