make, 158 bytes

Result

INVALID

Duration

932ms

Code [DL]

t!=seq 50
i=$(STDIN)
i!=echo $i|sed 's/./ &/g'
$(foreach ,$t,$(info $(or $(fillter $(word 2,$i),$(word 3,$i)),$(word 4,$i)))$(eval i:=$$(wordlist 7,999,$$i)))

stdin

975 274
238 823
286 898
799 297
261 457
744 776
743 775
344 485
345 395
719 695
449 942
912 187
125 454
475 528
762 261
766 469
866 665
923 677
334 345
769 593
899 918
453 752
362 224
532 332
155 644
956 553
615 151
928 552
157 771
255 146
699 998
711 887

stdout

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

stderr

make: *** No targets.  Stop.

strace

10    execve("/bin/sh", ["/bin/sh", "/root/script", "/volume/CODE"], 0x7ffd36c37350 /* 7 vars */) = 0
11    execve("/bin/cat", ["cat", "-"], 0x55fb29d8c028 /* 7 vars */) = 0
12    execve("/usr/bin/ag_launcher", ["/usr/bin/ag_launcher", "-i", "/usr/bin/make", "-f", "/volume/CODE"], 0x55fb29d8c0a8 /* 7 vars */) = 0
12    execve("/usr/bin/make", ["/usr/bin/make", "-f", "/volume/CODE"], 0x5629ed2a5da0 /* 8 vars */ <unfinished ...>
11    +++ exited with 0 +++
12    <... execve resumed>)             = 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} ---
13    execve("/usr/bin/seq", ["seq", "50"], 0x7ffc8c5a9cf8 /* 8 vars */) = 0
13    +++ exited with 0 +++
14    execve("/bin/sh", ["/bin/sh", "-c", "echo 975 274238 823286 898799 29"...], 0x7ffc8c5a9cf8 /* 8 vars */) = 0
15    +++ exited with 0 +++
14    --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=15, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
16    execve("/bin/sed", ["sed", "s/./ &/g"], 0x562b542986c8 /* 8 vars */) = 0
16    +++ exited with 0 +++
14    --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=16, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
14    +++ exited with 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 +++