element, 52 bytes

Result

AC

Duration

722ms

Code [DL]

!_0;_1;{0~`_2:1~=}0~`(\ ={\ `0~(#0;(\ =}0~1?{K`(\ =}

stdin

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    K                                             

stdout

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    KKKKKKKKKK

stderr

strace

11    execve("/bin/sh", ["/bin/sh", "/root/script", "/volume/CODE"], 0x7ffe1373a630 /* 7 vars */) = 0
12    execve("/bin/cat", ["cat", "/volume/CODE"], 0x562412270d10 /* 7 vars */) = 0
12    +++ exited with 0 +++
11    --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=12, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
13    execve("/bin/cat", ["cat", "-"], 0x562412270d60 /* 7 vars */ <unfinished ...>
14    execve("/usr/bin/perl", ["perl", "/root/element.plx", "!_0;_1;{0~`_2:1~=}0~`(\\ ={\\ `0~("...], 0x5624138cf090 /* 7 vars */) = 0
13    <... execve resumed> )            = 0
13    +++ exited with 0 +++
11    --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=13, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
14    +++ exited with 0 +++
11    --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=14, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
11    +++ exited with 0 +++