python1, 83 bytes

Result

WA

Code [DL]

import sys
line = sys.stdin.readline()
sys.stdout.write(line)
sys.stdout.flush()

stdin

9540039672095245882414045262482197539288325149215133328789909733150928746117748655952027814014686192

stdout

stderr

/home/esolang/bin/python1: line 3:     6 Segmentation fault      (core dumped) ~/interpreters/python1.0.1 "$@"

strace