vim, 37 bytes

Result

WA

Code [DL]

let a:i=getline(1,'$')[0]
echo a:i

Disassembly

let a:i=getline(1,'$')[0]<CR><NL>echo a:i<CR><NL>

stdin

5585227664401594124922340969446811266405385750385932239604840381185865613092910712889404035716703698

stdout

5585227664401594124922340969446811266405385750385932239604840381185865613092910712889404035716703698

stderr

strace