12 lines
373 B
MiniZinc
12 lines
373 B
MiniZinc
predicate fzn_roots_reif(array[int] of var int: x, var set of int: s,
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var set of int: t, var bool: b) =
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b <-> (
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% All values in 's' must map to a value in 't'.
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forall(i in ub(s)) (
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i in s -> x[i] in t
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) /\
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forall(i in ub(t)) (
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i in t -> forall(j in index_set(x)) (x[j] = i -> j in s )
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)
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);
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