abc, 71 bytes

Result

AC

Duration

1406ms

Code [DL]

WHILEe>0:
	READsRAW
	SELECT:
		s@3|1=s@2|1:WRITEs@3|1
		ELSE:WRITEs@5|1

stdin

591 184
171 121
148 483
739 445
533 779
144 422
172 526
388 185
527 675
624 441
739 532
122 678
614 152
633 394
344 949
916 612
728 971
242 445
324 716
935 431
956 557
559 994
361 642
675 331
767 678
199 573
764 913
841 291
435 539
844 445
733 334
755 998

stdout

11443458645213469474596369925435

stderr

*** Cannot find or read messages file; using numbers
 (message 3119)  (message 3100)     READ s RAW
 (message 3113)  (message 3111)  (message 3114)   (message 3807) 

strace

16    execve("/bin/sh", ["/bin/sh", "/root/script", "/volume/CODE"], 0x7ffcc74ffb00 /* 8 vars */) = 0
17    execve("/bin/cat", ["cat", "-"], 0x558fd5404bd8 /* 8 vars */) = 0
17    +++ exited with 0 +++
16    --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=17, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
19    execve("/root/ABC/abc", ["/root/ABC/abc", "/volume/CODE"], 0x558fd6bb9f48 /* 8 vars */) = 0
18    +++ exited with 0 +++
16    --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=18, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
19    +++ exited with 1 +++
16    --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=19, si_uid=0, si_status=1, si_utime=0, si_stime=0} ---
16    +++ exited with 1 +++