#include <bits/stdc++.h>
using namespace std;
using ll=long long;
using ld=long double;
using P=pair<ll,ll>;
using V=vector<ll>;
#define rep(i,n) for(int i=0;i<n;i++)
#define REP(i,n) for(int i=1;i<=n;i++)

int main(){
    ll n,x,m;
    cin >> n >> x >> m;
    V a(n);
    rep(i,n) cin >> a[i];

    V b(n);
    rep(i,n){
        while(x<=a[i]){
            a[i]/=2;
            b[i]++;
        }
    }

    for(int i=n-2;0<=i;i--) b[i]=max(b[i],b[i+1]);
    rep(i,n) m-=b[i];

    if(0<=m) cout << "Yes" << endl;
    else cout << "No" << endl;

}