main :: IO ()
main = do
    ab <- getLine
    let list = words ab
    let list2 = map read list :: [Int]
    -- putStrLn $ unwords $ map show list2
    solve list2
    
solve :: [Int] -> IO ()
    solve listt
    | ( mod ( listt !! 0 ) 2 == 1 ) && ( mod ( listt !! 1 ) 2 == 1 ) = putStrLn "Yes"
    | otherwise = putStrLn "No"