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module Main (main) where
main :: IO ()
main = do
print $ length vals
where
boundaries :: [Integer]
boundaries = [fromIntegral (maxBound :: Int) - 3,
fromIntegral (maxBound :: Int) - 2,
fromIntegral (maxBound :: Int) - 1,
fromIntegral (maxBound :: Int),
fromIntegral (maxBound :: Int) + 1,
fromIntegral (maxBound :: Int) + 2,
fromIntegral (maxBound :: Int) + 3,
fromIntegral (minBound :: Int) - 3,
fromIntegral (minBound :: Int) - 2,
fromIntegral (minBound :: Int) - 1,
fromIntegral (minBound :: Int),
fromIntegral (minBound :: Int) + 1,
fromIntegral (minBound :: Int) + 2,
fromIntegral (minBound :: Int) + 3,
fromIntegral (maxBound :: Word) - 3,
fromIntegral (maxBound :: Word) - 2,
fromIntegral (maxBound :: Word) - 1,
fromIntegral (maxBound :: Word),
fromIntegral (maxBound :: Word) + 1,
fromIntegral (maxBound :: Word) + 2,
fromIntegral (maxBound :: Word) + 3,
-3, -2, -1, 0, 1, 2, 3]
vals = filter (\(x, y) -> x /= y) [(x - y, x + negate y) |
x <- boundaries, y <- boundaries]
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