import Data.List as List


main = do
    content <- getContents
    let layers =  lines content
    let indexlayers = map(\x-> mapInd(\x y -> (y,x)) x ) layers
    let points = concat (mapInd(\x y->map(\x->((fst x,y),snd x))x) $ indexlayers)
    let asteroids = map fst (filter(\(x,y) -> y == '#' ) points)
    --let sortedAsteroids = sortBy sortDistance asteroids
    --let view =  length (getViews (asteroids) (3,4))
    let result = List.maximum(map(\x-> length(getViews (asteroids) x)) (asteroids))
    --mapM putStrLn (map(\(x,y)->(show x ) ++(show y)) asteroids)
    --mapM putStrLn (map(\(x,y)->(show x ) ++(show y)) sortedAsteroids)
    putStrLn ( show result)
    mapM putStrLn (map show (layers))
    
mapInd :: (a -> Int -> b) -> [a] -> [b]
mapInd f l = zipWith f l [0..]

sortDistance ((a,b),c) ((a2,b2),c2)
  | a + b > a2 + b2 = GT
  | a + b < a2 + b2 = LT
  | a + b == a2 + b2 = EQ

getViews :: [(Int,Int)] -> (Int,Int) -> [(Int,Int)]
getViews xs (a,b) = foldl getView [](delete (0,0)( (map(\(x,y) -> ((x-a),(y-b)))xs))) 

getView :: [(Int,Int)] -> (Int,Int) -> [(Int,Int)]
getView xs y 
       |notElem (reduce y) (map reduce xs) = xs ++ [y]
       |otherwise = xs

reduce :: (Int,Int) -> (Int,Int) 
reduce (a,b) = ((div a (gcd a b)),(div b (gcd a b)))