import java.util.Arrays;
import java.util.Comparator;
import java.util.Scanner;

public class Main {
	public static void main(String[] args) {
		Scanner sc = new Scanner(System.in);
		int N = Integer.parseInt(sc.next());
		int M = Integer.parseInt(sc.next());
		double divM = (double) 1 / (4 * M);
		boolean judge = true;
		int voteSum = 0;
		Integer[] arrayA = new Integer[N];

		for (int i = 0; i < N; i++) {
			arrayA[i] = Integer.parseInt(sc.next());
			voteSum += arrayA[i];
		}
		sc.close();
		//降順にソートする
		Arrays.sort(arrayA, Comparator.reverseOrder());

		for (int i = 0; i < M; i++) {
			//総投票数の1/4M未満であるか
			if ((double) arrayA[i] / voteSum < divM) {
				judge = false;
				break;
			}
		}
		System.out.println(judge ? "Yes" : "No");
	}
}
/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