unreadable, 302 bytes

Result

WA

Code [DL]

'""""'"""""'""""""'"""'""'""""""""""'""""""'"""""""'"""'""'"""""""'"""""""'"""'""""'""""""'"""'""'""'""'""'""'""'""'""'""'""'""'""'""'""'""'""'""'""'""'""'""'""'""'""'""'""'""'""'""'""'""'""'""'""'""'""'""'""'""'""'""'""'""'""'""'""'""'"""'"""""'"""""""'""""""'"""'""'"""""""'"""'"'""""""""'"""""""'"""

Disassembly

(do (while (set (1), (inc (in))), (set (get (1)), (inc (get (get (1)))))), (do (set (1), (inc (inc (inc (inc (inc (inc (inc (inc (inc (inc (inc (inc (inc (inc (inc (inc (inc (inc (inc (inc (inc (inc (inc (inc (inc (inc (inc (inc (inc (inc (inc (inc (inc (inc (inc (inc (inc (inc (inc (inc (inc (inc (inc (inc (inc (inc (inc (1))))))))))))))))))))))))))))))))))))))))))))))))), (while (get (set (1), (inc (get (1))))), (print (dec (get (1)))))))

stdin

0887269513820233386527818812235546180772046229983424697333427983008208621044613546356215596085009862

stdout

0123456789

stderr

strace