import Data.List
import qualified Data.ByteString.Char8 as B

main :: IO ()
main = breads >>= print . solve

solve :: [Int] -> Int
solve [x, y] = succ . truncate $ (log (fromIntegral y) - log (fromIntegral x)) / log 2

breads :: IO [Int]
breads = unfoldr uff <$> B.getLine
    where
        uff b = check <$> B.readInt b
        check (a, b)
            | B.null b = (a, b)
            | otherwise = (a, B.tail b)