#include <bits/stdc++.h>
using namespace std;
#include <atcoder/all>
using namespace atcoder;
#define rep(i, n) for (long long i = 0; i < (long long)(n); i++)
#define rep2(i, m ,n) for (int i = (m); i < (long long)(n); i++)
#define REP(i, n) for (long long i = 1; i < (long long)(n); i++)
typedef long long ll;


int main() {
int n;int m,l;cin>>n>>m>>l;
  vector<int> v(n);
  rep(i,n){cin>>v[i];}
  if(m==l){cout<<"Yes";return 0;}
  else{
   vector<vector<bool>> dp(n+1,vector<bool>(2000,false));
   dp[0][l] = true; 
   rep(i,n){
    rep(j,2000){
      if(dp[i][j]){dp[i+1][(j+v[i])/2] = true;dp[i+1][j] = true;}
    }
   }
  // rep(i,n+1){rep(j,2000){cout<<dp[i][j]<<" ";}cout<<endl;}
    bool dekiru = false;
    rep(i,n+1){
     if(dp[i][m]){cout<<"Yes"<<endl;return 0;}
      
    }
    cout<<"No"<<endl;return 0;
}
    
}