#include <bits/stdc++.h>
using namespace std;
using ll = long long;
using P = pair<ll,ll>;
#define fix(x) fixed << setprecision(x)
#define asc(x) x, vector<x>, greater<x>
#define rep(i, n) for(ll i = 0; i < n; i++)
#define all(x) (x).begin(),(x).end()
template<class T>bool chmin(T&a, const T&b){if(a>b){a=b;return 1;}return 0;}
template<class T>bool chmax(T&a, const T&b){if(a<b){a=b;return 1;}return 0;}
constexpr ll INFLL = (1LL <<62);
constexpr int INF = (1<<30);
int main(){
    cin.tie(nullptr);
    ios::sync_with_stdio(false);
    int n,m,l;
    cin >> n >> m >> l;
    vector<bool> dp(1001,false);
    dp[l] = true;
    rep(i,n){
        int a;
        cin >> a;
        vector<bool> upd(1001, false);
        rep(j,1001){
            if(dp[j]){
                upd[(j+a)/2] = true;
                upd[j] = true;
            }
        }
        dp = upd;
    }
    cout << (dp[m]?"Yes\n":"No\n");
    return 0;
}