#include <bits/stdc++.h>
#include <atcoder/all>
#define OVERLOAD_REP(_1, _2, _3, name, ...) name
#define REP1(i,n) for (auto i = std::decay_t<decltype(n)>{}; (i) < (n); ++(i))
#define REP2(i,l,r) for (auto i = (l); (i) != (r); ++(i))
#define rep(...) OVERLOAD_REP(__VA_ARGS__, REP2, REP1)(__VA_ARGS__)
#define all(a) (a).begin(),(a).end()
#define rall(a) (a).rbegin(),(a).rend()
using namespace std;
using namespace atcoder;
using ll = long long;
using ull = unsigned long long;
using P = pair<int,int>;
using PP = pair<long long,int>;
using LP = pair<long long,long long>;
using mint1 = modint1000000007;
using mint9 = modint998244353;
const int INF = 1'000'000'100;
const long long LINF = 1'000'000'000'000'100'000;
const int di[] = {0,1,0,-1,-1,1,-1,1};
const int dj[] = {1,0,-1,0,1,1,-1,-1};
template<class T> inline bool chmin(T& a, T b){if(a>b){a=b;return true;}return false;}
template<class T> inline bool chmax(T& a, T b){if(a<b){a=b;return true;}return false;}
void YesNo (bool ok,const string& s="Yes",const string& t="No") {if(ok)cout<<s<<endl;else cout<<t<<endl;}


//-----def end-----//

bool dp[105][2005];

int main () {
    int n , m , l;
    cin >> n >> m >> l;
    vector<int> a(n);
    rep(i , n) cin >> a[i];
    dp[0][l] = true;
    rep(i , n) rep(j , 2005) {
        if(!dp[i][j]) continue;
        dp[i+1][j] = true;
        dp[i+1][(j+a[i])/2] = true;
    }
    if(dp[n][m]) cout << "Yes" << endl;
    else cout << "No" << endl;
    return 0;
}