import java.rmi.activation.ActivationGroup_Stub;
import java.util.Scanner;
import java.util.ArrayList;

public class Main {
    public static void main(String[] args) {
        Scanner sc = new Scanner(System.in);
        ArrayList<Integer> al = new ArrayList<Integer>();
        double total = 0;

        int N = sc.nextInt();
        int M = sc.nextInt();
        for (int i = 0; i < N; i++) {
            al.add(sc.nextInt());
        }

        int count = 0;
        for (int i = 0; i < N; i++) {
            total += al.get(i);
        }

        for (int j = 0; j < N; j++) {
            if (al.get(j) >= (total/(4*M))) {
                count++;
            }
            else {
                count = count;
            }
        }

        if (count >= M) {
            System.out.println("Yes");
        }

        else {
            System.out.println("No");
        }
    }
} import java.rmi.activation.ActivationGroup_Stub; ActivationGroup_Stub java.rmi.activation import java.util.Scanner; Scanner java.util import java.util.ArrayList; ArrayList java.util public class Main {
    public static void main(String[] args) {
        Scanner sc = new Scanner(System.in);
        ArrayList<Integer> al = new ArrayList<Integer>();
        double total = 0;

        int N = sc.nextInt();
        int M = sc.nextInt();
        for (int i = 0; i < N; i++) {
            al.add(sc.nextInt());
        }

        int count = 0;
        for (int i = 0; i < N; i++) {
            total += al.get(i);
        }

        for (int j = 0; j < N; j++) {
            if (al.get(j) >= (total/(4*M))) {
                count++;
            }
            else {
                count = count;
            }
        }

        if (count >= M) {
            System.out.println("Yes");
        }

        else {
            System.out.println("No");
        }
    }
} Main public static void main(String[] args) {
        Scanner sc = new Scanner(System.in);
        ArrayList<Integer> al = new ArrayList<Integer>();
        double total = 0;

        int N = sc.nextInt();
        int M = sc.nextInt();
        for (int i = 0; i < N; i++) {
            al.add(sc.nextInt());
        }

        int count = 0;
        for (int i = 0; i < N; i++) {
            total += al.get(i);
        }

        for (int j = 0; j < N; j++) {
            if (al.get(j) >= (total/(4*M))) {
                count++;
            }
            else {
                count = count;
            }
        }

        if (count >= M) {
            System.out.println("Yes");
        }

        else {
            System.out.println("No");
        }
    } main {
        Scanner sc = new Scanner(System.in);
        ArrayList<Integer> al = new ArrayList<Integer>();
        double total = 0;

        int N = sc.nextInt();
        int M = sc.nextInt();
        for (int i = 0; i < N; i++) {
            al.add(sc.nextInt());
        }

        int count = 0;
        for (int i = 0; i < N; i++) {
            total += al.get(i);
        }

        for (int j = 0; j < N; j++) {
            if (al.get(j) >= (total/(4*M))) {
                count++;
            }
            else {
                count = count;
            }
        }

        if (count >= M) {
            System.out.println("Yes");
        }

        else {
            System.out.println("No");
        }
    } Scanner sc = new Scanner(System.in); sc new Scanner(System.in) ArrayList<Integer> al = new ArrayList<Integer>(); al new ArrayList<Integer>() double total = 0; total 0 int N = sc.nextInt(); N sc.nextInt() sc.nextInt sc int M = sc.nextInt(); M sc.nextInt() sc.nextInt sc for (int i = 0; i < N; i++) {
            al.add(sc.nextInt());
        } int i = 0; int i = 0; i 0 i < N i N i++ i++ i {
            al.add(sc.nextInt());
        } {
            al.add(sc.nextInt());
        } al.add(sc.nextInt()) al.add al sc.nextInt() sc.nextInt sc int count = 0; count 0 for (int i = 0; i < N; i++) {
            total += al.get(i);
        } int i = 0; int i = 0; i 0 i < N i N i++ i++ i {
            total += al.get(i);
        } {
            total += al.get(i);
        } total += al.get(i) total al.get(i) al.get al i for (int j = 0; j < N; j++) {
            if (al.get(j) >= (total/(4*M))) {
                count++;
            }
            else {
                count = count;
            }
        } int j = 0; int j = 0; j 0 j < N j N j++ j++ j {
            if (al.get(j) >= (total/(4*M))) {
                count++;
            }
            else {
                count = count;
            }
        } {
            if (al.get(j) >= (total/(4*M))) {
                count++;
            }
            else {
                count = count;
            }
        } if (al.get(j) >= (total/(4*M))) {
                count++;
            }
            else {
                count = count;
            } al.get(j) >= (total/(4*M)) al.get(j) al.get al j (total/(4*M)) total (4*M) 4 M {
                count++;
            } count++ count {
                count = count;
            } count = count count count if (count >= M) {
            System.out.println("Yes");
        }

        else {
            System.out.println("No");
        } count >= M count M {
            System.out.println("Yes");
        } System.out.println("Yes") System.out.println System.out System System.out "Yes" {
            System.out.println("No");
        } System.out.println("No") System.out.println System.out System System.out "No" String[] args args public class Main {
    public static void main(String[] args) {
        Scanner sc = new Scanner(System.in);
        ArrayList<Integer> al = new ArrayList<Integer>();
        double total = 0;

        int N = sc.nextInt();
        int M = sc.nextInt();
        for (int i = 0; i < N; i++) {
            al.add(sc.nextInt());
        }

        int count = 0;
        for (int i = 0; i < N; i++) {
            total += al.get(i);
        }

        for (int j = 0; j < N; j++) {
            if (al.get(j) >= (total/(4*M))) {
                count++;
            }
            else {
                count = count;
            }
        }

        if (count >= M) {
            System.out.println("Yes");
        }

        else {
            System.out.println("No");
        }
    }
} public class Main {
    public static void main(String[] args) {
        Scanner sc = new Scanner(System.in);
        ArrayList<Integer> al = new ArrayList<Integer>();
        double total = 0;

        int N = sc.nextInt();
        int M = sc.nextInt();
        for (int i = 0; i < N; i++) {
            al.add(sc.nextInt());
        }

        int count = 0;
        for (int i = 0; i < N; i++) {
            total += al.get(i);
        }

        for (int j = 0; j < N; j++) {
            if (al.get(j) >= (total/(4*M))) {
                count++;
            }
            else {
                count = count;
            }
        }

        if (count >= M) {
            System.out.println("Yes");
        }

        else {
            System.out.println("No");
        }
    }
} Main
import java.rmi.activation.ActivationGroup_Stub;
import java.util.Scanner;
import java.util.ArrayList;

public class Main {
    public static void main(String[] args) {
        Scanner sc = new Scanner(System.in);
        ArrayList<Integer> al = new ArrayList<Integer>();
        double total = 0;

        int N = sc.nextInt();
        int M = sc.nextInt();
        for (int i = 0; i < N; i++) {
            al.add(sc.nextInt());
        }

        int count = 0;
        for (int i = 0; i < N; i++) {
            total += al.get(i);
        }

        for (int j = 0; j < N; j++) {
            if (al.get(j) >= (total/(4*M))) {
                count++;
            }
            else {
                count = count;
            }
        }

        if (count >= M) {
            System.out.println("Yes");
        }

        else {
            System.out.println("No");
        }
    }
}
