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Ingy döt Net 2023-07-01 11:58:00 -04:00
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Task/Floyd-Warshall-algorithm/Haskell/floyd-warshall-algorithm-3.hs Normal file
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instance (Ord a, Eq b) => Semigroup (Shortest b a) where
a <> b = case distance a `compare` distance b of
GT -> b
LT -> a
EQ -> a { path = path a `union` path b }