use std::io::*;
fn main() {
    let mut input: String = String::new();
    std::io::stdin().read_to_string(&mut input).ok();
    let mut itr = input.trim().split_whitespace();
    let n: usize = itr.next().unwrap().parse().unwrap();
    let m: usize = itr.next().unwrap().parse().unwrap();
    let l: usize = itr.next().unwrap().parse().unwrap();
    let a: Vec<usize> = (0..n)
        .map(|_| itr.next().unwrap().parse().unwrap())
        .collect();

    let mut used = vec![false; 1001];
    used[l] = true;
    for i in 0..n {
        for j in 0..=1000 {
            if used[j] {
                let nv = (j + a[i]) / 2;
                used[nv] = true;
            }
        }
    }
    println!("{}", if used[m] { "Yes" } else { "No" });
}