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<Integer> 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();
    }
}