python1, 32 bytes

Result

WA

Code [DL]

a=raw_input()
print a[0]+"\x00"

stdin

6353777889268658950907221277971887382186890584640230641153773904266348469030202793251741980172350200

stdout

stderr

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

strace