module Main where

import Control.Applicative
import Text.Printf
import Numeric

main :: IO ()
main = loop

loop :: IO ()
loop = do
  { [h, w] <- getInts
  ; if h == 0 && w == 0 then return ()
    else do
      { let oneline = replicate w '#'
      ; let rect    = replicate h oneline
      ; putStr $ unlines rect
      ; putStrLn ""
      ; loop
      }
  }

--

getInts :: IO [Int]
getInts = map read . words <$> getLine

putInts :: [Int] -> IO ()
putInts = putStrLn . unwords . map show

getDoubles :: IO [Double]
getDoubles = map read . words <$> getLine

putDoubles :: [Double] -> IO ()
putDoubles = putStrLn . unwords . map showDouble

showDouble :: Double -> String
showDouble x = showFFloat Nothing x ""

getStrings :: IO [String]
getStrings = words <$> getLine 

readInt' :: String -> Int
readInt' = read

