fun readInt () =
    valOf (TextIO.scanStream (Int.scan StringCvt.DEC) TextIO.stdIn)


fun pow (x, y) =
    let
        fun loop n =
            if n = 0 then 1.0
            else x * loop (n - 1)
    in
        loop y
    end


val () =
    let
        val p = readInt ()
        val c = readInt ()

        val primeDice = (Real.fromInt (2 + 3 + 5 + 7 + 11 + 13)) / 6.0
        val compositeDice = (Real.fromInt (4 + 6 + 8 + 9 + 10 + 12)) / 6.0
        val ans = pow (primeDice, p) * pow (compositeDice, c)
    in
        print ((Real.fmt (StringCvt.FIX (SOME 9)) ans) ^ "\n")
    end