fun readReal () =
    valOf (TextIO.scanStream Real.scan TextIO.stdIn)


val () =
    let
        val p = readReal ()
        val q = readReal ()
        
        val ans = if (1.0 - p) * q < p * (1.0 - q) * q then "YES"
                  else "NO"
    in
        print (ans ^ "\n")
    end