golfscript, 23 bytes

Result

WA

Duration

1046ms

Code [DL]

8/{(;4<n*~@@.@=@@if}%n*

stdin

495 997
311 771
248 487
745 661
876 754
344 774
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844 143
571 714
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463 645
261 165
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659 951
938 889
512 612
141 962
762 837
843 311
571 119
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946 355
519 113
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146 846
941 528
422 323

stdout

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

stderr

strace

10    execve("/bin/sh", ["/bin/sh", "/root/script", "/volume/CODE"], 0x7fff0dbb5590 /* 9 vars */) = 0
11    execve("/bin/cat", ["cat", "-"], 0x55b44fa06d70 /* 9 vars */ <unfinished ...>
12    execve("/usr/local/ruby-2.7.1/bin/ruby", ["/usr/local/ruby-2.7.1/bin/ruby", "/root/golfscript.rb", "/volume/CODE"], 0x55b44fc5f028 /* 9 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 0 +++
10    --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=12, si_uid=0, si_status=0, si_utime=6, si_stime=1} ---
10    +++ exited with 0 +++