#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(109, vector<bool>(1009));
    dp[0][L] = true;
    for(int i=1; i<=N; i++) {
        for(int j=0; j<=1009; j++) {
            if(dp[i-1][j] == true) {
                dp[i][j] = true;
                dp[i][(j+A[i-1])/2] = true;
            }
        }
    }
    if(dp[N][M] == true) {
        cout << "Yes" << endl;
    }
    else cout << "No" << endl;
    return 0;

}