<?php
$n = $_REQUEST['maara'];
$suunta = $_REQUEST['suunta'];
$sana = $_REQUEST['sana'];
$l = strlen($sana);

if ($suunta == "V") {
    for($a = 1; $a <= $n; $a++) {
        $x = substr($sana, 0, 1);
        $y = substr($sana, 1);
        $sana = $y.$x;
    }
} else {
    for ($a = 1; $a <= $n; $a++) {
        $x = substr($sana, $l-1);
        $y = substr($sana, 0, ($l-1));
        $sana = $x.$y;
    }
}

echo $sana;
?>