Jip J. Dekker
fad1b07018
git-subtree-dir: software/minizinc git-subtree-split: 4f10c82056ffcb1041d7ffef29d77a7eef92cf76
19 lines
625 B
MiniZinc
19 lines
625 B
MiniZinc
int: n; % 拉丁方的大小
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array[1..n,1..n,1..n] of var bool: a;
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predicate atmostone(array[int] of var bool:x) =
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forall(i,j in index_set(x) where i < j)(
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(not x[i] \/ not x[j]));
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predicate exactlyone(array[int] of var bool:x) =
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atmostone(x) /\ exists(x);
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constraint forall(i,j in 1..n)(
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exactlyone(k in 1..n)(a[i,j,k]) /\
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exactlyone(k in 1..n)(a[i,k,j]) /\
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exactlyone(k in 1..n)(a[k,i,j])
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);
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solve satisfy;
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output [ if fix(a[i,j,k]) then
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show(k) ++ if j == n then "\n" else " " endif
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else "" endif | i,j,k in 1..n ];
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