fun log(base: Double, n: Double) = Math.log(n) / Math.log(base)

        val fullHeight = Math.round(log(2.0, size.toDouble())).toInt() + 1
        val level = Math.floor(log(2.0, vertex.toDouble())).toInt() + 1
        val height = fullHeight - level
        val nodeNum = vertex - Math.pow(2.0, level.toDouble() - 1).toInt() + 1
        val leaves = Math.pow(2.0, height.toDouble()).toInt()

        val segment = leaves * (nodeNum - 1) to leaves * (nodeNum) - 1