php, 50 bytes

Result

WA

Code [DL]

<?= $a=str_split(readline())|sort($a).implode($a);

stdin

7480545951311150568512081022293446105514222888249113648463977787286459862178345840568395340718904979

stdout

1

stderr

PHP Warning:  sort() expects parameter 1 to be array, null given in /volume/CODE on line 1
PHP Warning:  implode(): Argument must be an array in /volume/CODE on line 1

strace