element, 50 bytes

Result

AC

Duration

706ms

Code [DL]

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

stdin

                       T                          
                                                  
                                                  
                                                  
                                                  
                                                  
                                                  
                                                  
     K                                            

stdout

                       T                          
                       T                          
                       T                          
                       T                          
                       T                          
                       T                          
                       T                          
                       T                          
     KKKKKKKKKKKKKKKKKKK

stderr

strace

11    execve("/bin/sh", ["/bin/sh", "/root/script", "/volume/CODE"], 0x7fff63902790 /* 7 vars */) = 0
12    execve("/bin/cat", ["cat", "/volume/CODE"], 0x55906d8e7d10 /* 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} ---
14    execve("/usr/bin/perl", ["perl", "/root/element.plx", "!_0;_1;{0~`_2:1~=}0~`(?{\\ `0~(#0"...], 0x55906f129090 /* 7 vars */) = 0
13    execve("/bin/cat", ["cat", "-"], 0x55906d8e7d60 /* 7 vars */) = 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} ---
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} ---
11    +++ exited with 0 +++