#include <bits/stdc++.h>
using namespace std;

int main()
{
	int n, m, l;
	cin >> n >> m >> l;
	vector<int> a(n);
	for(int i = 0; i < n; i++) cin >> a[i];
	
	vector<vector<bool>> dp(n + 1, vector<bool>(1001));
	dp[0][l] = true;
	for(int i = 0; i < n; i++)
	{
		for(int j = 0; j <= 1000; j++)
		{
			if(dp[i][j])
			{
				dp[i + 1][j] = true;
				dp[i + 1][(j + a[i]) / 2] = true;
			}
		}
	}
	if(dp[n][m]) cout << "Yes" << endl;
	else cout << "No" << endl;
	return 0;
}