
import java.util.Scanner;

public class Main {

    public static void main(String[] args) {
        Scanner sc = new Scanner(System.in);
        int N = sc.nextInt();
        int M = sc.nextInt();
        int[] a = new int[N];
        int all = 0;
        for(int i=0;i<N;i++){
            a[i] = sc.nextInt();
            all += a[i];
        }
        int count = 0;
        for(int i=0;i<N;i++) {
            if (a[i] >= (all * 0.25f / M)) {
                count++;
            }
        }
        System.out.println(count >= M ? "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