unreadable, 381 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)))), (set (get (1)), (dec (get (get (1))))))))))

stdin

3659762309565967620782142286306596368335034103862597244864906786240633302578179955410691347786613001

stdout

0000000000011111112222222223333333333333444444445555555556666666666666666677777777788888888999999999

stderr

strace