#include using namespace std; int main() { int n,x,m; cin >> n >> x >> m; vectora(n); for(int i = 0; i < n; i++) { cin >> a[i]; } int sum = 0,res = 0; for(int i = n-1; i >= 0; i--) { for(int j = 0; j < res; j++) { a[i] /= 2; } while(a[i] > x) { sum += i+1; res++; a[i] /= 2; } } cout << ((sum > m)?"No":"Yes") << endl; }