#include <bits/stdc++.h>
#include <atcoder/all>
using namespace std;
using namespace atcoder;
#define rep(i,n) for(int i=0;i<(n);i++)
typedef long long ll;
//using mint = modint;
//using mint = modint998244353;
using mint = modint1000000007;
using P = pair<int, int>;

const ll INF=1LL<<60, dx[]={0,1,0,-1},dy[]={1,0,-1,0};
template <typename T> inline bool chmin(T& a,const T&b) {if(a>b){a=b; return 1;} return 0;}
template <typename T> inline bool chmax(T& a,const T&b) {if(a<b){a=b; return 1;} return 0;}

int main(){

    int n,m,l;
    cin >> n >> m >> l;
    vector<int> a(n);
    rep(i,n) cin >> a[i];

    vector<vector<int>> dp(1001,vector<int> (1001));

    dp[0][l]=1;
    for(int i=1;i<=n;i++) {
        rep(j,1001) {
            if(dp[i-1][j]) {
                dp[i][j]=1;
                dp[i][(j+a[i-1])/2]=1;
            }
        }
    }
    cout << ((dp[n][m])?"Yes":"No") << endl;

    return 0;
}