import scala.collection.mutable
import scala.io.StdIn

object Main {
  def main(args:Array[String]) = {
    val n = StdIn.readInt()
    val a = StdIn.readLine().split(" ").map(_.toInt).+:(1000000000)
    val pq = new mutable.PriorityQueue[(Int,Int)]()(Ordering.Tuple2[Int,Int].reverse)
    for (v <- a) pq.+=((v,0))
    val b = StdIn.readLine().split(" ").map(_.toInt/2)
    println( (0 until n).map { i =>
      val q = pq.clone()
      val (h:Array[Int], t:Array[Int]) = b.splitAt(i).swap
      h.++(t).foreach { j =>
        val (l, c) = q.dequeue()
        q.enqueue((l + j, c + 1))
      }
      q.map(_._2).max
    }.min )
  }
}