unreadable, 456 bytes

Result

AC

Code [DL]

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

Disassembly

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

stdin

1824614735442390094949872717247296492067767723686937847572966609843561404991834907634968104867327323

stdout

0000000111111222222222233333333334444444444444445556666666666666777777777777777888888889999999999999

stderr

strace