import java.util.*;

class Main {
	public static void main(String[] args) {
		Scanner sc = new Scanner(System.in);
		int n = sc.nextInt();
		int[] a = new int[n];
		for (int z = 0; z < n; z++) {
			a[z] = sc.nextInt();
		}
		int b = sc.nextInt();
		int c = sc.nextInt();
		for (int z = 0; z < n; z++) {
			a[z] -= b;
			if (a[z] < 0) {
				a[z] = 0;
			}
		}
		long sum = n;
		for (int z = 0; z < n; z++) {
			sum += a[z] / c;
			if (a[z] % c != 0) {
				sum++;
			}
		}
		System.out.println(sum);
		sc.close();
	}
}