import java.io.BufferedReader;
import java.io.IOException;
import java.io.InputStreamReader;
import java.util.ArrayList;
import java.util.Arrays;
import java.util.Collections;
import java.util.List;
import java.util.Scanner;


public class Main {
	public static void main(String[] args) throws IOException {
		Scanner sc = new Scanner(System.in);
		int n = sc.nextInt();
		PizzaPrice pizza = new PizzaPrice();
		pizza.a = Integer.parseInt(sc.next()); 
		pizza.b = Integer.parseInt(sc.next());
		int pricePizza = sc.nextInt();
		List<Integer> a = new ArrayList();
		for (int i = 0; i < n; i++) {
			int x = sc.nextInt();
			a.add(x);
		}
		int mxPrice = -100001, sum = 0, times = 0;
		int notUseTopping = Math.round(pricePizza / pizza.a); 
		if (notUseTopping > mxPrice) {
			mxPrice = notUseTopping;
		}
		a.sort(Collections.reverseOrder());
		for (int i = 0; i < n; i++) {
			sum += a.get(i);
			times++;
			int cal = (sum + pricePizza) / (pizza.a + times * pizza.b);
			if (cal > mxPrice) {
				mxPrice = cal;
			}
		}
		System.out.println(mxPrice);
	}
	public static class PizzaPrice{
		int a;
		int b;
	}
}