11 lines
444 B
MiniZinc
11 lines
444 B
MiniZinc
include "tree.mzn";
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include "subgraph.mzn";
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predicate fzn_dpath_reif(int: N, int: E, array[int] of int: from, array[int] of int: to,
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var int: s, var int: t, array[int] of var bool: ns, array[int] of var bool: es,
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var bool: b) =
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b <-> ( dtree(N,E,from,to,s,ns,es) /\
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dtree(N,E,to,from,t,ns,es) );
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%-----------------------------------------------------------------------------%
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