13458.java

import java.util.*;

public class Main {

 public static void main(String[] args) {

 Scanner sc = new Scanner(System.in);
 
 int roomCnt = sc.nextInt();
 int[] rooms = new int[roomCnt];
 
 for(int i=0; i<roomCnt; i++) {
 	rooms[i] = sc.nextInt();
 }
 
 int B = sc.nextInt();
 int C = sc.nextInt();
 
 long answer = roomCnt;
 for(int i=0; i<roomCnt; i++) {
 if(rooms[i]-B <= 0)
 		continue;
 
 	answer += (long)Math.ceil((rooms[i]-B) / (C*1.0));
 }
 
 System.out.println(answer);
 }
}