import scala.io.StdIn
object Main extends App {
    val N = StdIn.readInt()
    val A = StdIn.readLine().split(" ").map(_.toInt)
    val dpL, dpR = Array.fill(N)(Array.fill(N)(1))
    (1 until N).foreach { d =>
        (0 until N - d).foreach { l =>
            val r = l + d
            val pdpL = dpL(l)(r - 1)
            val pdpR = dpR(l + 1)(r)
            dpL(l)(r) = if (A(l) >= A(r)) pdpL else Seq(pdpL, (pdpR + 1)).max
            dpR(l)(r) = if (A(l) <= A(r)) pdpR else Seq(pdpR, (pdpL + 1)).max
        }
    }
    println(((0 until N).map(dpL(_)(N - 1)) ++ dpR(0)).max)
}