powershell, 29 bytes

Result

AC

Duration

1632ms

Code [DL]

$input|%{$_[$_[4]-$_[5]?2:4]}

stdin

497 931
772 275
145 531
459 557
511 539
831 947
522 426
272 273
819 192
216 114
655 664
234 445
121 881
177 251
176 165
847 177
374 661
223 724
415 177
861 285
877 725
186 489
388 884
361 245
966 366
199 447
866 616
691 112
966 664
993 357
422 755
643 435

stdout

7
2
5
5
1
1
2
2
9
1
6
4
8
7
6
7
6
3
5
1
7
6
8
1
6
4
6
1
6
3
2
3

stderr

strace

10    execve("/bin/sh", ["/bin/sh", "/root/script", "/volume/CODE"], 0x7fffc8553b30 /* 6 vars */) = 0
11    execve("/bin/cat", ["cat", "-"], 0x56028a09cc10 /* 6 vars */ <unfinished ...>
12    execve("/usr/bin/pwsh", ["/usr/bin/pwsh", "/volume/CODE"], 0x56028a09cc28 /* 6 vars */ <unfinished ...>
11    <... execve resumed> )            = 0
12    <... execve resumed> )            = 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} ---
15    +++ exited with 0 +++
16    +++ exited with 0 +++
12    --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=15, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
31    +++ exited with 0 +++
30    +++ exited with 0 +++
32    +++ exited with 0 +++
29    +++ exited with 0 +++
28    +++ exited with 0 +++
27    +++ exited with 0 +++
26    +++ exited with 0 +++
25    +++ exited with 0 +++
24    +++ exited with 0 +++
23    +++ exited with 0 +++
22    +++ exited with 0 +++
21    +++ exited with 0 +++
20    +++ exited with 0 +++
19    +++ exited with 0 +++
18    +++ exited with 0 +++
17    +++ exited with 0 +++
14    +++ exited with 0 +++
13    +++ exited with 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=42, si_stime=18} ---
10    +++ exited with 0 +++