golfscript, 16 bytes

Result

WA

Duration

1040ms

Code [DL]

8/{..2=?2*=}%''+

stdin

644 335
197 284
599 994
377 776
372 755
722 626
914 944
189 694
433 145
236 658
844 414
921 224
177 679
346 464
236 395
872 675
585 925
872 729
758 881
166 276
399 938
679 464
383 441
948 832
415 215
797 471
299 778
616 613
337 336
564 466
139 997
183 553

stdout

42977296364274365786943827963495

stderr

strace

10    execve("/bin/sh", ["/bin/sh", "/root/script", "/volume/CODE"], 0x7ffc4cfda220 /* 9 vars */) = 0
11    execve("/bin/cat", ["cat", "-"], 0x56413163ad70 /* 9 vars */) = 0
12    execve("/usr/local/ruby-2.7.1/bin/ruby", ["/usr/local/ruby-2.7.1/bin/ruby", "/root/golfscript.rb", "/volume/CODE"], 0x564131848028 /* 9 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    +++ exited with 0 +++
10    --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=12, si_uid=0, si_status=0, si_utime=5, si_stime=4} ---
10    +++ exited with 0 +++