From: rjh@cpax.org.uk   
      
   On 22/11/2022 8:23 am, David Brown wrote:   
   > But then your problem comes down to nothing more than a "modulo"   
   > function and a comparison, which sounds far too simple a "puzzle".   
      
   That's where I ended up too.   
      
   --   
   Richard Heathfield   
   Email: rjh at cpax dot org dot uk   
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    * Origin: you cannot sedate... all the things you hate (1:229/2)