Problem:
Reverse Sequence

Write a program which reverses a given string str.

Input

str (the size of str ≤ 20) is given in a line.

Output

Print the reversed str in a line.

Sample Input

w32nimda

Output for the Sample Input

admin23w

Solution in PHP (judge verdict: Accepted)

<?php
fscanf( STDIN, "%s", $str );
$rev='';
for($i=strlen($str)-1;0<=$i;$i--) $rev.=$str[$i];
echo $rev;
?>