backhand, 16 bytes

Result

AC

Duration

795ms

Code [DL]

Wii:ii~E]sioIi1j

stdin

186 529
748 885
778 284
915 152
154 448
249 494
795 115
621 129
938 137
633 336
755 345
766 483
522 229
853 522
742 521
277 991
577 995
843 377
821 857
141 157
825 292
188 285
511 616
139 939
728 129
334 927
669 669
954 551
473 445
668 441
611 136
811 136

stdout

58214411135625577381281919654411

stderr

Tried to print invalid value (-1) as character

strace

10    execve("/bin/sh", ["/bin/sh", "/root/script", "/volume/CODE"], 0x7ffc80b55680 /* 7 vars */) = 0
11    execve("/bin/cat", ["cat", "-"], 0x55df8f808d80 /* 7 vars */ <unfinished ...>
12    execve("/usr/bin/python3", ["/usr/bin/python3", "/root/Backhand/Backhand_Interpre"..., "/volume/CODE"], 0x55df90ec5050 /* 7 vars */ <unfinished ...>
11    <... execve resumed>)             = 0
12    <... execve resumed>)             = 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    +++ exited with 1 +++
10    --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=12, si_uid=0, si_status=1, si_utime=2, si_stime=0} ---
10    +++ exited with 1 +++