awk, 25 bytes

Result

AC

Duration

802ms

Code [DL]

BEGIN{FS=A}$0=$2-$3?$5:$3

stdin

479 781
366 668
743 434
261 886
944 643
594 728
421 146
122 557
262 626
133 336
916 866
192 998
783 819
533 244
759 945
792 299
469 731
833 117
394 349
388 386
356 549
983 338
319 918
211 948
322 214
663 336
922 214
459 334
729 229
882 793
491 895
753 152

stdout

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

stderr

strace

10    execve("/bin/sh", ["/bin/sh", "/root/script", "/volume/CODE"], 0x7ffdb8b17cc0 /* 7 vars */) = 0
12    execve("/usr/bin/gawk", ["/usr/bin/gawk", "-f", "/volume/CODE"], 0x55d51d2f5028 /* 7 vars */) = 0
11    execve("/bin/cat", ["cat", "-"], 0x55d51b48cd58 /* 7 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    +++ 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} ---
10    +++ exited with 0 +++