#include <bits/stdc++.h>
using namespace std;
int main() {
  int N, X, M;
  cin >> N >> X >> M;
  vector<int> A(N);
  for (int i = 0; i < N; i++) {
    cin >> A[i];
  }
  bool ok = true;
  while (true) {
    int idx = -1;
    for (int i = 0; i < N; i++) {
      if (A[i] >= X) {
        idx = i;
      }
    }
    if (idx == -1) {
      break;
    }
    if (M >= idx + 1) {
      for (int i = 0; i <= idx; i++) {
        A[i] /= 2;
      }
      M -= idx + 1;
    } else {
      ok = false;
      break;
    }
  }
  if (ok) {
    cout << "Yes" << endl;
  } else {
    cout << "No" << endl;
  }
}