golfscript, 15 bytes

Result

WA

Duration

929ms

Code [DL]

8/{(;););$3%~}%

stdin

322 627
231 198
546 441
276 928
336 569
753 443
733 325
245 644
699 993
411 995
672 259
483 335
421 227
766 551
466 663
119 195
277 789
779 797
446 554
616 198
998 892
355 892
673 475
263 587
799 593
516 667
266 919
221 416
828 323
286 892
262 269
223 284

stdout

23476435995326697956987696623863

stderr

strace

13    execve("/bin/sh", ["/bin/sh", "/root/script", "/volume/CODE"], 0x7fff1562c910 /* 9 vars */) = 0
15    execve("/usr/local/ruby-2.7.1/bin/ruby", ["/usr/local/ruby-2.7.1/bin/ruby", "/root/golfscript.rb", "/volume/CODE"], 0x55af83d13028 /* 9 vars */) = 0
14    execve("/bin/cat", ["cat", "-"], 0x55af8207fd70 /* 9 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 0 +++
13    --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=15, si_uid=0, si_status=0, si_utime=4, si_stime=3} ---
13    +++ exited with 0 +++