powershell, 26 bytes

Result

INVALID

Duration

1647ms

Code [DL]

awk -vFS= '$0=$2~$3?$2:$5'

stdin

754 383
227 212
875 872
199 552
922 219
238 335
719 195
398 894
815 152
697 796
822 252
656 665
355 445
971 766
492 217
265 575
627 378
757 661
499 997
956 965
422 196
398 771
722 728
399 991
796 495
192 947
834 338
166 769
223 566
499 218
763 338
926 958

stdout

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

stderr

strace

10    execve("/bin/sh", ["/bin/sh", "/root/script", "/volume/CODE"], 0x7ffe67e47310 /* 6 vars */) = 0
12    execve("/usr/bin/pwsh", ["/usr/bin/pwsh", "/volume/CODE"], 0x562b20d6fc28 /* 6 vars */) = 0
11    execve("/bin/cat", ["cat", "-"], 0x562b20d6fc10 /* 6 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} ---
15    +++ 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} ---
17    +++ exited with 0 +++
12    --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=17, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
33    execve("/usr/bin/awk", ["/usr/bin/awk", "-vFS=", "$0=$2~$3?$2:$5"], 0x7f8084008420 /* 7 vars */) = 0
33    +++ exited with 0 +++
31    --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=33, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
31    +++ exited with 0 +++
32    +++ exited with 0 +++
30    +++ exited with 0 +++
29    +++ exited with 0 +++
28    +++ exited with 0 +++
26    +++ exited with 0 +++
27    +++ exited with 0 +++
24    +++ exited with 0 +++
25    +++ 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 +++
16    +++ 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=33, si_stime=14} ---
10    +++ exited with 0 +++