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', $str);
for ($i = strlen($str) - 1; $i >= 0; $i--) {
    echo $str[$i];
}
echo PHP_EOL;