make, 161 bytes

Result

WA

Duration

787ms

Code [DL]

1=$(STDIN)
f=$(if $1,$(word 2,$(filter $(wordlist 2,4,$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

493 593
538 176
744 446
253 113
472 278
619 178
867 753
871 199
882 826
718 586
499 695
598 448
653 551
455 987
116 668
823 952
355 756
588 883
318 118
595 311
994 395
681 158
485 848
237 879
966 898
947 746
124 442
339 394
244 468
799 973
655 883
677 221

stdout

38432971889835135889915767434957

stderr

make: 38432971889835135889915767434957: No such file or directory
make: *** [/volume/CODE:3: a] Error 127

strace

13    execve("/bin/sh", ["/bin/sh", "/root/script", "/volume/CODE"], 0x7ffd9c6c9a60 /* 7 vars */) = 0
15    execve("/usr/bin/ag_launcher", ["/usr/bin/ag_launcher", "-i", "/usr/bin/make", "-f", "/volume/CODE"], 0x55bbae7d40a8 /* 7 vars */ <unfinished ...>
14    execve("/bin/cat", ["cat", "-"], 0x55bbae7d4028 /* 7 vars */ <unfinished ...>
15    <... execve resumed>)             = 0
14    <... execve resumed>)             = 0
15    execve("/usr/bin/make", ["/usr/bin/make", "-f", "/volume/CODE"], 0x55dd0bc83da0 /* 8 vars */) = 0
14    +++ exited with 0 +++
13    --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=14, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
15    +++ exited with 2 +++
13    --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=15, si_uid=0, si_status=2, si_utime=0, si_stime=0} ---
13    +++ exited with 2 +++