#include<bits/stdc++.h>
using namespace std;
#define rep(i,a,b) for(int i=a;i<b;i++)
using ll = long long;
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;}
const int INF = (1<<30)-1;
#define all(p) p.begin(),p.end()

int main(){
	int N,M,L;
	cin>>N>>M>>L;
	int D=1010;
	vector<bool> dp(D);
	dp[L]=1;
	rep(i,0,N){
		int a;
		cin>>a;
		auto ndp=dp;
		rep(j,0,D){
			if(dp[j]) ndp[(j+a)/2]=1;
		}
		swap(ndp,dp);
	}
	cout<<(dp[M] ? "Yes\n" : "No\n");
}