#include <bits/stdc++.h>
using namespace std;
using ch = char;
using ll = long long;
using ld = long double;
using db = double;
using st = string;
using vdb = vector<db>;
using vvdb = vector<vdb>;
using vl = vector<ll>;
using vvl = vector<vl>;
using vvvl = vector<vvl>;
using vd = vector<ld>;
using vvd = vector<vd>;
using vs = vector<st>;
using vvs = vector<vs>;
using vc = vector<ch>;
using vvc = vector<vc>;
using vb = vector<bool>;
using vvb = vector<vb>;
using vvvb = vector<vvb>;
const ll mod = 998244353;
const ll MOD = 1000000007;
using vp = vector<pair<ll,ll>>;
#define fi first
#define se second

int main(){
  ll N,X,M;
  cin>>N>>X>>M;
  vl A(N);
  for(auto &a:A)
    cin>>a;
  ll ans=0;
  ll b=0;
  for(int i=N-1; i>-1; i--){
    ll a=0;
    for(int j=0; j<b; j++){
      A[i]/=2;
    }
    while(X<=A[i]){
      A[i]/=2;
      a++;
    }
    a*=(i+1);
    ans=max(ans,a+b);
  }
  if(ans>M)
    cout<<"No"<<endl;
  else
    cout<<"Yes"<<endl;
}