import java.util.Scanner;
class Main{
	public static void main(String[] args){
		Scanner sc = new Scanner(System.in);
		int N = sc.nextInt();
		int M = sc.nextInt();
		int L = sc.nextInt();
		boolean[] dp = new boolean[1001];
		dp[L] = true;
		while(N-->0){
			boolean[] next = new boolean[1001];
			int A = sc.nextInt();
			for(int i=0;i<=1000;i++){
				next[i] |= dp[i];
				next[(i+A)/2] |= dp[i];
			}
			dp = next;
		}
		System.out.println(dp[M]?"Yes":"No");
	}
}