import Data.Char (digitToInt)
import Data.ByteString.Char8 (ByteString)
import qualified Data.ByteString.Char8 as B

main :: IO ()
main = interact $ show . solve . words

solve :: [String] -> Int
solve [s, t]
    | t == "0" = 1
    | n == 0   = 0
    | n == 1   = 1
    | n == 2   = if i `mod` 4 == 1 then 2 else if i `mod` 4 == 2 then 4 else if i `mod` 4 == 3 then 8 else 6
    | n == 3   = if i `mod` 4 == 1 then 3 else if i `mod` 4 == 2 then 9 else if i `mod` 4 == 3 then 7 else 1
    | n == 4   = if m `mod` 2 == 0 then 6 else 4
    | n == 5   = 5
    | n == 6   = 6
    | n == 7   = if i `mod` 4 == 1 then 7 else if i `mod` 4 == 2 then 9 else if i `mod` 4 == 3 then 3 else 1
    | n == 8   = if i `mod` 4 == 1 then 8 else if i `mod` 4 == 2 then 4 else if i `mod` 4 == 3 then 2 else 6
    | n == 9   = if m `mod` 2 == 0 then 1 else 9
    | otherwise = error ""
    where
        n = if (length s) <= 1 then (read :: String -> Int) s else digitToInt $ last s
        m = if (length t) <= 1 then (read :: String -> Int) t else digitToInt $ last t
        i = if (length t) <= 1 then (read :: String -> Int) t else (read :: String -> Int) ([last $ init t] ++ [last t])