golfscript, 39 bytes

Result

AC

Duration

854ms

Code [DL]

n/);)\(n+:a\,)*\"K"/~;.,a"T"/~;,\-)"*"*

stdin

                                       T          
                                                  
                                                  
                                                  
                                                  
                                                  
                                                  
                                                  
                                                  
                                                  
                                                  
                                                  
                                                  
                                                  
                                                  
                                                  
    K                                             

stdout

                                       T          
                                       T          
                                       T          
                                       T          
                                       T          
                                       T          
                                       T          
                                       T          
                                       T          
                                       T          
                                       T          
                                       T          
                                       T          
                                       T          
                                       T          
                                       T          
    ************************************

stderr

strace

11    execve("/bin/sh", ["/bin/sh", "/root/script", "/volume/CODE"], 0x7ffe5d295ae0 /* 9 vars */) = 0
13    execve("/usr/local/ruby-2.6.3/bin/ruby", ["/usr/local/ruby-2.6.3/bin/ruby", "/root/golfscript.rb", "/volume/CODE"], 0x55bd65711068 /* 9 vars */) = 0
12    execve("/bin/cat", ["cat", "-"], 0x55bd653b3d70 /* 9 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    +++ exited with 0 +++
11    --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=13, si_uid=0, si_status=0, si_utime=8, si_stime=6} ---
11    +++ exited with 0 +++