main :: IO ()
main = do

    input_line <- getLine
    
    let numberlist = map area input_line :: [Int]
    let ln2 = length input_line * 2
    let ans = ln2 + 1 + sum numberlist

    putStrLn $ show ans
    return ()
    
area :: Char -> Int
area a
    | a == '8' = 2
    | a == '4' || a == '6' || a == '9' = 1
    | otherwise = 0