unreadable, 390 bytes

Result

AC

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

stdin

1940594217899170195413177595136724143980881253171218384463441318282710072210714112523128791676394453

stdout

0000001111111111111111111112222222222233333333334444444444445555555666677777777777888888888999999999

stderr

strace