vim, 17 bytes

Result

WA

Code [DL]

:%s/(.)/\1\n/g
ZZ

Disassembly

:%s/(.)/\1\n/g<NL>ZZ

stdin

2375149682871530025258063913199032586247434853832209667200830188070204648556149474286988835374704933

stdout

2375149682871530025258063913199032586247434853832209667200830188070204648556149474286988835374704933

stderr

strace