object Main {
  def main(args: Array[String]): Unit = {
    solve
  }

  def solve(): Unit = {
    val sc = new java.util.Scanner(System.in)
    val n = sc.nextLong
    val abcde = new Array[Long](5)
    for (i <- 0 until 5) {
      abcde(i) = sc.nextLong
    }
    if (n <= abcde.min) println(5)
    else {
      if (n % abcde.min == 0) println(5L + n / abcde.min - 1)
      else println(5L + n / abcde.min)
    }
  }
}