import java.io.*; import java.util.*; public class Main { public static void main(String[] args) throws Exception { Scanner sc = new Scanner(); int n = sc.nextInt(); int a = sc.nextInt(); int b = sc.nextInt(); int x = sc.nextInt(); int y = sc.nextInt(); long total = 0; PriorityQueue queue = new PriorityQueue<>(); for (int i = 0; i < n; i++) { int xx = sc.nextInt(); queue.add(-xx); total += xx; } for (int i = 0; i < a; i++) { int tmp = queue.poll(); total += tmp; tmp = Math.max(0, tmp + x); queue.add(tmp); total -= tmp; } if (total <= (long)b * y) { System.out.println("Yes"); } else { System.out.println("No"); } } } class Scanner { BufferedReader br = new BufferedReader(new InputStreamReader(System.in)); StringTokenizer st = new StringTokenizer(""); public Scanner() throws Exception { } public int nextInt() throws Exception { return Integer.parseInt(next()); } public long nextLong() throws Exception { return Long.parseLong(next()); } public double nextDouble() throws Exception { return Double.parseDouble(next()); } public String next() throws Exception { while (!st.hasMoreTokens()) { st = new StringTokenizer(br.readLine()); } return st.nextToken(); } }