import Data.Char (isSpace)
import Control.Applicative ((<$>))
import Data.List (unfoldr)
import Data.ByteString.Char8 (ByteString)
import qualified Data.ByteString.Char8 as B

getL :: (ByteString -> [Integer]) -> IO [Integer]
getL f = f <$> B.getLine

readIL :: (ByteString -> Maybe (Integer, ByteString)) -> (ByteString -> [Integer])
readIL f = unfoldr g
    where
        g s = do
            (n, s') <- f s
            return (n, B.dropWhile isSpace s')

main :: IO ()
main = do
    [a, b] <- getL (readIL B.readInteger)
    if a == b && a == 0
        then putStrLn "E"
        else if a == 0 || b == 0 || a == 1 || b == 1
            then putStrLn "S"
            else putStrLn "P"