import java.io.FileInputStream
import java.util.*


var sc: Scanner = Scanner(System.`in`)
fun main(args: Array<String>) {
    if (args.size > 0) {
        System.setIn(FileInputStream(args[0]))
    }
    sc = Scanner(System.`in`)

    problem()

}

fun problem() {

    val N = sc.nextInt()
    val D = sc.nextInt()
    val X = sc.nextInt()
    var count = 0
    for (i in 1..N) {
        val Ai = sc.nextInt()
        for (day in 1..D step Ai) {
            count++
        }
    }


    //println(brues)
    println(count + X)

}

