(letrec ((n (read)) (m (read)))
  (print
   (cond
    ((or (and (string=? "0" n) (string=? "0" m))
         (and (string=? "2" n) (string=? "2" m)))
     "E")
    ((or (string=? "0" n) (string=? "0" n)
         (string=? "1" n) (string=? "1" m))
     "S")
    (else "P"))))