import scala.io._
object Main {
	def main(args: Array[String]) {
		val input = Source.fromInputStream(System.in)
		val lines = input.getLines.toSeq

		var DX = lines(1).split(" ").map(_.toInt)
		var A = lines.drop(2).map(_.toInt)
		var res = 0

		A.foreach{
			c =>
			var i = 1
			while((i * c) + 1 <= DX(0)) i += 1
			res += i
		}
		println(res + DX(1))
	}
}