import Control.Applicative ((<$>))

main :: IO ()
main = do
  solve <$> getl (map read . words) >>= putStrLn

solve :: [Int] -> String
solve [a, b] = let d = b - a
               in if d > 0 then '+' : show d else show d

getl :: (String -> a) -> IO a
getl f = f <$> getLine