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/* maximum number of colours that can be used.
actual number is now passed to initcolors */
#define MAXNETSIZE 256
/* For 256 colours, fixed arrays need 8kb, plus space for the image
---------------------------------------------------------------- */
/* four primes near 500 - assume no image has a length so large */
/* that it is divisible by all four primes */
#define prime1 499
#define prime2 491
#define prime3 487
#define prime4 503
#define minpicturebytes (4*prime4) /* minimum size for input image */
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