#include<bits/stdc++.h>
using namespace std;
using ll=long long;

int main(){
    ll N,X,M;
    cin>>N>>M>>X;
    vector<ll> A(N);
    for(int i=0;i<N;i++){
        cin>>A[i];
    }
    ll mp=0,Mcnt=0;
    for(int i=N-1;i>=0;i--){
        ll cnt=0;
        while(A[i]>=X){
            A[i]/=2;
            cnt++;
        }
        mp+=max(cnt-Mcnt,0LL)*(i+1);
        Mcnt=max(Mcnt,cnt);
    }
    if(mp<=M){
        cout<<"Yes"<<endl;
    }else{
        cout<<"No"<<endl;
    }
    return 0;
}