pure-folders, 173 bytes

Result

WA

Duration

885ms

Code [DL]

for (i in 0 to 31) {
  let a = input_line(stdin);
  if (a.[1] == a.[2]) {
    print_endline(String.sub(a, 2, 2));
  } else {
    print_endline(String.sub(a, 4, 4));
  };
};

Disassembly

/tmp/code

0 directories, 0 files

stdin

466 883
168 845
339 896
397 954
652 524
477 776
249 993
877 274
578 771
488 375
676 674
779 362
697 556
384 546
859 155
924 154
256 667
873 163
355 579
528 524
233 234
954 559
737 378
311 117
988 993
672 769
248 859
388 846
476 671
233 436
755 266
262 332

stdout

stderr

tar: invalid tar magic

Unhandled Exception:
System.InvalidOperationException: Sequence contains no elements
  at System.Linq.Enumerable.Max (System.Collections.Generic.IEnumerable`1[T] source) [0x00022] in <7ded87b81a794667956c6beaee0bc32a>:0 
  at Rottytooth.Esolang.Folders.DirInfoExtensions.CustomSort (System.Collections.Generic.IEnumerable`1[T] list) [0x0002c] in <57324297c3c645d79f3c2dab909d76bf>:0 
  at Rottytooth.Esolang.Folders.ProgramBuilderPure.BuildProgram () [0x0001c] in <57324297c3c645d79f3c2dab909d76bf>:0 
  at Rottytooth.Esolang.Folders.Program.Compile (System.String path, System.String& errors, System.Boolean exe, System.Boolean pureFolders) [0x0000e] in <57324297c3c645d79f3c2dab909d76bf>:0 
  at Rottytooth.Esolang.Folders.Program.Main (System.String[] args) [0x00066] in <57324297c3c645d79f3c2dab909d76bf>:0 
[ERROR] FATAL UNHANDLED EXCEPTION: System.InvalidOperationException: Sequence contains no elements
  at System.Linq.Enumerable.Max (System.Collections.Generic.IEnumerable`1[T] source) [0x00022] in <7ded87b81a794667956c6beaee0bc32a>:0 
  at Rottytooth.Esolang.Folders.DirInfoExtensions.CustomSort (System.Collections.Generic.IEnumerable`1[T] list) [0x0002c] in <57324297c3c645d79f3c2dab909d76bf>:0 
  at Rottytooth.Esolang.Folders.ProgramBuilderPure.BuildProgram () [0x0001c] in <57324297c3c645d79f3c2dab909d76bf>:0 
  at Rottytooth.Esolang.Folders.Program.Compile (System.String path, System.String& errors, System.Boolean exe, System.Boolean pureFolders) [0x0000e] in <57324297c3c645d79f3c2dab909d76bf>:0 
  at Rottytooth.Esolang.Folders.Program.Main (System.String[] args) [0x00066] in <57324297c3c645d79f3c2dab909d76bf>:0 
Cannot open assembly 'code.exe': No such file or directory.

strace

10    execve("/bin/sh", ["/bin/sh", "/root/script", "/volume/CODE.tar"], 0x7ffeb9ab6590 /* 9 vars */) = 0
11    execve("/usr/bin/realpath", ["realpath", "/volume/CODE.tar"], 0x56012764ed20 /* 9 vars */) = 0
11    +++ exited with 0 +++
10    --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=11, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
12    execve("/bin/ln", ["ln", "-s", "/volume/CODE.tar", "/tmp/code.tar"], 0x56012764ed40 /* 9 vars */) = 0
12    +++ exited with 0 +++
10    --- 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/mkdir", ["mkdir", "-p", "/tmp/code"], 0x56012764ece0 /* 9 vars */) = 0
13    +++ exited with 0 +++
10    --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=13, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
14    execve("/bin/tar", ["tar", "xf", "/tmp/code.tar", "-C", "/tmp/code"], 0x560127e110c0 /* 9 vars */) = 0
14    +++ exited with 1 +++
10    --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=14, si_uid=0, si_status=1, si_utime=0, si_stime=0} ---
15    execve("/usr/bin/mono", ["mono", "Folders.exe", "../../../../../../../tmp/code"], 0x56012764ed40 /* 10 vars */) = 0
17    +++ exited with 1 +++
16    +++ exited with 1 +++
15    +++ exited with 1 +++
10    --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=15, si_uid=0, si_status=1, si_utime=2, si_stime=1} ---
18    execve("/bin/cat", ["cat", "-"], 0x56012764ed30 /* 10 vars */ <unfinished ...>
19    execve("/usr/bin/mono", ["mono", "code.exe"], 0x56012764ed38 /* 10 vars */ <unfinished ...>
18    <... execve resumed>)             = 0
19    <... execve resumed>)             = 0
18    +++ exited with 0 +++
10    --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=18, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
21    +++ exited with 0 +++
20    +++ exited with 0 +++
19    +++ exited with 2 +++
10    --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=19, si_uid=0, si_status=2, si_utime=0, si_stime=0} ---
22    execve("/bin/rm", ["rm", "-rf", "code.exe", "/tmp/code"], 0x56012764ed38 /* 10 vars */) = 0
22    +++ exited with 0 +++
10    --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=22, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
10    +++ exited with 0 +++