import java.util.*;
public class Main {
	public static void main(String[] args){
		Scanner sc = new Scanner(System.in);

		int productNum = sc.nextInt();
		int choiseNum = sc.nextInt();
		int totalNum = 0;
		List<Integer> list = new ArrayList<>();
		int num = 0;

		for (int i = 1; i <= productNum; i++ ) {
			num = sc.nextInt();
			list.add(num);
			totalNum += num;
		}


		Collections.sort(list);
		Collections.reverse(list);
		
		for (int i = 1; i <= choiseNum; i++) {
		    if ((list.get(i-1) * 4 * choiseNum) < totalNum) {
		      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