15 lines
558 B
MiniZinc
15 lines
558 B
MiniZinc
/** @group globals
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Requires that in each subsequence \a vs[\p i], ..., \a vs[\p i + \a seq - 1] the sum of the
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values belongs to the interval [\a low, \a up].
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*/
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predicate fzn_sliding_sum(int: low, int: up, int: seq, array[int] of var int: vs) =
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let { int: lx = min(index_set(vs)),
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int: ux = max(index_set(vs)),
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} in
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forall (i in lx .. ux - seq + 1) (
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let {
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var int: sum_of_l = sum(j in i..i + seq - 1) (vs[j])
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} in
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low <= sum_of_l /\ sum_of_l <= up
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);
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