#include <bits/stdc++.h>

using namespace std;
void fast_io() {
    ios_base::sync_with_stdio(false);
    cin.tie(nullptr);
}
int main() {
    fast_io();
    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, false));
    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;
            }
        }
    }
    cout << (dp[n][m] ? "Yes" : "No") << endl;
}