#include<bits/stdc++.h>
using namespace std;
using ll = long long;
#define rep(i,m,n) for(int i=m; i<n; ++i)
#define repl(i,m,n) for(ll i=m; i<n; ++i)

int main(){
    int N, NN, L;
    cin >> N >> NN >> L;

    vector<int> A(N);
    for(int &a : A) cin >> a;

    vector dp(N+1, vector(1001, false));
    dp[0][L] = true;

    rep(i, 0, N){
        rep(j, 0, 1001){
            if(!dp[i][j]) continue;
            dp[i+1][j] = true;
            dp[i+1][(j+A[i])/2] = true;
        }
    }

    cout << (dp[N][NN] ? "Yes" : "No") << endl;
    return 0;
}