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

int main(){
    cin.tie(0);
    ios::sync_with_stdio(0);
    
    int N,X,M; cin >> N >> X >> M;
    vector<int> A(N);
    rep(i,N) cin >> A[i];
    int cnt = 0, cost = 0;
    for(int i = N - 1; i >= 0; i--) {
        rep(_,cnt) A[i] /= 2;
        while(X <= A[i]) {
            A[i] /= 2;
            cnt++;
            cost += i + 1;
        }
    }

    cout << (cost <= M ? "Yes" : "No") << endl;
}