node, 49 bytes

Result

WA

Code [DL]

p=require('fs').write(1,p.readFileSync(0).sort())

stdin

2020890325145440901680804562063641919270416162928716114204382421365359394588961966566260086896656559

stdout

stderr

/volume/CODE:1
(function (exports, require, module, __filename, __dirname) { p=require('fs').write(1,p.readFileSync(0).sort())
                                                                                      ^

ReferenceError: p is not defined
    at Object.<anonymous> (/volume/CODE:1:87)
    at Module._compile (module.js:571:32)
    at Object.Module._extensions..js (module.js:580:10)
    at Module.load (module.js:488:32)
    at tryModuleLoad (module.js:447:12)
    at Function.Module._load (module.js:439:3)
    at Module.runMain (module.js:605:10)
    at run (bootstrap_node.js:427:7)
    at startup (bootstrap_node.js:148:9)
    at bootstrap_node.js:542:3

strace