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{-# OPTIONS_GHC -fno-warn-redundant-constraints #-}
module T5342 (increaseAreas) where
import Control.Monad
import Data.List
nubSorted :: Eq a => [a] -> [a]
nubSorted = undefined
cellsAround :: (Num a, Num b, Ord a, Ord b) => [(a, b)] -> [(a, b)]
cellsAround = undefined
increaseAreas :: (Num a, Num b, Ord a, Ord b) => [[(a, b)]] -> [[(a, b)]]
increaseAreas areas
= nubSorted $ sort $
do
area <- areas
cell2 <- cellsAround area
return $ sort $ cell2 : area
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