fn main() {
    let v1: Vec<i64> = input_line();
    let (_n, mut a, b, x, y) = (v1[0] as usize, v1[1], v1[2], v1[3], v1[4]);
    let mut hv: Vec<i64> = input_line();

    while a > 0 {
        let max_index = get_max_idx(&hv);
        if hv[max_index] <= 0 {
            break;
        }
        hv[max_index] -= x;
        if hv[max_index] < 0 {
            hv[max_index] = 0;
        }
        a -= 1;
    }

    let b_total = b * y;
    let r_total = hv.iter().fold(0, |acc, x| acc + x);

    println!("{}", if b_total >= r_total { "Yes" } else { "No" });
}

fn get_max_idx(v: &Vec<i64>) -> usize {
    let mut max = v[0];
    let mut result: usize = 0;
    for (i, vi) in v.iter().enumerate() {
        if *vi > max {
            max = *vi;
            result = i;
        }
    }
    result
}

fn input_line<T: std::str::FromStr>() -> Vec<T> {
    let mut s = String::new();
    std::io::stdin().read_line(&mut s).ok();
    s.trim()
        .split_whitespace()
        .map(|e| e.parse().ok().unwrap())
        .collect()
}