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

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

solve :: [Int] -> Int
solve [x, y] = check 2 [1..]
    where
        r = y `div` x
        check acc (z : zs)
            | acc > r = z
            | otherwise = check (acc * 2) zs

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)