make, 168 bytes

Result

WA

Duration

796ms

Code [DL]

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

945 545
811 117
789 397
922 339
398 279
176 937
128 289
977 714
741 426
886 662
565 654
311 217
655 553
823 227
983 334
411 416
525 125
559 153
855 221
211 251
539 796
157 882
353 589
142 779
345 549
422 167
897 728
363 662
133 345
334 132
225 548
228 253

stdout

51322927486152311551785752763322

stderr

make: 51322927486152311551785752763322: No such file or directory
make: *** [/volume/CODE:3: a] Error 127

strace

10    execve("/bin/sh", ["/bin/sh", "/root/script", "/volume/CODE"], 0x7fffa3ecdd10 /* 7 vars */) = 0
11    execve("/bin/cat", ["cat", "-"], 0x55cc71aed028 /* 7 vars */) = 0
12    execve("/usr/bin/ag_launcher", ["/usr/bin/ag_launcher", "-i", "/usr/bin/make", "-f", "/volume/CODE"], 0x55cc71aed0a8 /* 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"], 0x55e34b2e0da0 /* 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 +++