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MiniZinc

include "fzn_diffn.mzn";
include "fzn_diffn_reif.mzn";
/** @group globals.packing
Constrains rectangles \p i, given by their origins (\a x[\p i], \a y[\p i])
and sizes (\a dx[\p i], \a dy[\p i]), to be non-overlapping. Zero-width
rectangles can still not overlap with any other rectangle.
*/
predicate diffn(array[int] of var int: x,
array[int] of var int: y,
array[int] of var int: dx,
array[int] of var int: dy) =
assert(
index_set(x) = index_set(y) /\
index_set(x) = index_set(dx) /\
index_set(x) = index_set(dy),
"diffn: index set mismatch",
fzn_diffn(x,y,dx,dy)
);
%-----------------------------------------------------------------------------%