import Control.Monad

main = getLine >>= print . questionnaire . map read . words

round' x
 | (ceiling (2*x) == floor (2*x)) && even (floor x) = round (x+0.1)
 | otherwise = round x

questionnaire [a,b] = minimum $ do
 x <- map fromIntegral [0..100]
 y <- map fromIntegral [0..100]
 guard (round' ((x*100)/(x+y)) == a && round' ((y*100)/(x+y)) == b)
 return (floor (x+y))