make, 168 bytes

Result

AC

Duration

946ms

Code [DL]

1=$(STDIN)
f=$(if $1,$(word $(words $(sort $(wordlist 1,3,$1)) _),$1)$(call f,$(wordlist 7,999,$1)))
a:;$(foreach d,1 2 3 4 5 6 7 8 9,$(eval 1:=$$(subst $d, $d,$$1)))$f

stdin

855 553
596 662
377 773
288 834
575 951
234 361
792 993
661 492
591 917
712 337
149 778
949 975
691 962
331 137
425 553
255 356
825 253
156 466
755 664
891 128
877 792
471 537
745 143
633 746
188 548
267 887
544 997
449 945
113 256
472 371
677 478
846 449

stdout

56785391937991552451751388493374

stderr

make: 56785391937991552451751388493374: No such file or directory
make: *** [/volume/CODE:3: a] Error 127

strace

10    execve("/bin/sh", ["/bin/sh", "/root/script", "/volume/CODE"], 0x7ffe225501e0 /* 7 vars */) = 0
11    execve("/bin/cat", ["cat", "-"], 0x562276e71028 /* 7 vars */) = 0
12    execve("/usr/bin/ag_launcher", ["/usr/bin/ag_launcher", "-i", "/usr/bin/make", "-f", "/volume/CODE"], 0x562276e710a8 /* 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    execve("/usr/bin/make", ["/usr/bin/make", "-f", "/volume/CODE"], 0x55c864919da0 /* 8 vars */) = 0
12    +++ exited with 2 +++
10    --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=12, si_uid=0, si_status=2, si_utime=0, si_stime=0} ---
10    +++ exited with 2 +++