import java.util.ArrayList;
import java.util.Scanner;
import java.util.Comparator;
import java.util.Collections;
 
class Main {
	public static void main(String[] args) {
 
	    Scanner sc = new Scanner(System.in);
	    double N = sc.nextDouble();
	    double M = sc.nextDouble();
	    ArrayList<Double> A = new ArrayList<>();
	    double total = 0;
	    double vote = 0;
	    
	    for (int i = 0; i < N; i++) {
	      vote = sc.nextDouble();
	      total += vote;
	      A.add(vote);
	    }
	    
	    Collections.sort(A, Comparator.reverseOrder());
	    
	    for (int j = 0; j < M; j++) {
	      if (!(A.get(j)/total >= 1/(4*M))) {
	        System.out.println("No");
	        return;
	      }
	    }
	    System.out.println("Yes");
 
	  }
}
/tmp/hf-datasets-cache/medium/datasets/42704881117311-config-parquet-and-info-qiankunmu-Project_CodeNet-896c9d36/hub/datasets--qiankunmu--Project_CodeNet_Python800_and_Java250/snapshots/c899fde44a77ba1cc14973ed3de064e4ff3aadc7/Project_CodeNet_Java250.tar.gz