[RUN] c:\ruby\bin\ruby.exe reversefile.ruby 5 -- OK
[RUN] c:\ruby\bin\ruby.exe reversefile.ruby 5 -- OK
[RUN] c:\ruby\bin\ruby.exe reversefile.ruby 5 -- OK
[RUN] c:\ruby\bin\ruby.exe reversefile.ruby 10 -- OK
[RUN] c:\ruby\bin\ruby.exe reversefile.ruby 10 -- OK
[RUN] c:\ruby\bin\ruby.exe reversefile.ruby 10 -- OK
[RUN] c:\ruby\bin\ruby.exe reversefile.ruby 15 -- OK
[RUN] c:\ruby\bin\ruby.exe reversefile.ruby 15 -- OK
[RUN] c:\ruby\bin\ruby.exe reversefile.ruby 15 -- OK
[RUN] c:\ruby\bin\ruby.exe reversefile.ruby 20 -- OK
[RUN] c:\ruby\bin\ruby.exe reversefile.ruby 20 -- OK
[RUN] c:\ruby\bin\ruby.exe reversefile.ruby 20 -- OK