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

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