import java.util.Scanner

object Main extends App {
  val sc = new Scanner(System.in)

  val n = sc.nextInt
  val al = Array.fill(n)(sc.nextInt)
  val bl = Array.fill(n)(sc.nextInt)
  var ans = 0
  var f = al(0) != bl(0)
  for(i <- 0 until n) {
    val c = al(i) != bl(i)
    if(c) {
      if(f) {
        ans += 1
        f = false
      }
    } else {
      f = true
    }
  }
  println(ans)
}