gnuplot, 85 bytes

Result

WA

Duration

832ms

Code [DL]

set print "-"
i=1
while(){y=word(ARG1,i+1)
print y/10%11?word(ARG1,i)%10:y/100
i=i+2}

stdin

557 576
756 162
977 676
185 683
922 313
494 598
783 154
993 765
868 673
522 992
498 136
273 776
436 393
992 997
353 359
644 448
179 298
633 344
655 567
299 992
459 976
134 446
392 217
371 997
588 181
966 571
192 883
377 884
155 486
573 331
467 762
124 245

stdout

stderr

while(){y=word(ARG1,i+1);
      ^
"/volume/CODE" line 3: invalid expression 

strace

10    execve("/bin/sh", ["/bin/sh", "/root/script", "/volume/CODE"], 0x7ffdb68f3840 /* 7 vars */) = 0
11    execve("/bin/cat", ["cat", "-"], 0x55b130c5ccf8 /* 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/gnuplot", ["/usr/bin/gnuplot", "-c", "/volume/CODE", "557 576\n756 162\n977 676\n185 683\n"...], 0x55b131a9d290 /* 7 vars */) = 0
12    +++ exited with 1 +++
10    --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=12, si_uid=0, si_status=1, si_utime=0, si_stime=1} ---
10    +++ exited with 1 +++