import java.util.Arrays;
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();
        // 配列
        int[] a = new int[n];
        int sum = 0;
        for(int i=0;i<n;i++){
            a[i] = sc.nextInt();
            sum+=a[i];
        }
        Arrays.sort(a);

        for (int i = n-1;i > n-1-m;i--) {
            if(a[i] * 4 * m < sum) {
                System.out.println("No");
                return;
            }
        }
        System.out.println("Yes");
    }
} import java.util.Arrays; Arrays java.util import java.util.Scanner; Scanner java.util public class Main {
    public static void main(String[] args){
        Scanner sc = new Scanner(System.in);
        int n = sc.nextInt();
        int m = sc.nextInt();
        // 配列
        int[] a = new int[n];
        int sum = 0;
        for(int i=0;i<n;i++){
            a[i] = sc.nextInt();
            sum+=a[i];
        }
        Arrays.sort(a);

        for (int i = n-1;i > n-1-m;i--) {
            if(a[i] * 4 * m < sum) {
                System.out.println("No");
                return;
            }
        }
        System.out.println("Yes");
    }
} Main public static void main(String[] args){
        Scanner sc = new Scanner(System.in);
        int n = sc.nextInt();
        int m = sc.nextInt();
        // 配列
        int[] a = new int[n];
        int sum = 0;
        for(int i=0;i<n;i++){
            a[i] = sc.nextInt();
            sum+=a[i];
        }
        Arrays.sort(a);

        for (int i = n-1;i > n-1-m;i--) {
            if(a[i] * 4 * m < sum) {
                System.out.println("No");
                return;
            }
        }
        System.out.println("Yes");
    } main {
        Scanner sc = new Scanner(System.in);
        int n = sc.nextInt();
        int m = sc.nextInt();
        // 配列
        int[] a = new int[n];
        int sum = 0;
        for(int i=0;i<n;i++){
            a[i] = sc.nextInt();
            sum+=a[i];
        }
        Arrays.sort(a);

        for (int i = n-1;i > n-1-m;i--) {
            if(a[i] * 4 * m < sum) {
                System.out.println("No");
                return;
            }
        }
        System.out.println("Yes");
    } Scanner sc = new Scanner(System.in); sc new Scanner(System.in) int n = sc.nextInt(); n sc.nextInt() sc.nextInt sc int m = sc.nextInt(); m sc.nextInt() sc.nextInt sc int[] a = new int[n]; a new int[n] n int sum = 0; sum 0 for(int i=0;i<n;i++){
            a[i] = sc.nextInt();
            sum+=a[i];
        } int i=0; int i=0; i 0 i<n i n i++ i++ i {
            a[i] = sc.nextInt();
            sum+=a[i];
        } {
            a[i] = sc.nextInt();
            sum+=a[i];
        } a[i] = sc.nextInt() a[i] a i sc.nextInt() sc.nextInt sc sum+=a[i] sum a[i] a i Arrays.sort(a) Arrays.sort Arrays a for (int i = n-1;i > n-1-m;i--) {
            if(a[i] * 4 * m < sum) {
                System.out.println("No");
                return;
            }
        } int i = n-1; int i = n-1; i n-1 n 1 i > n-1-m i n-1-m n-1-m n 1 m i-- i-- i {
            if(a[i] * 4 * m < sum) {
                System.out.println("No");
                return;
            }
        } {
            if(a[i] * 4 * m < sum) {
                System.out.println("No");
                return;
            }
        } if(a[i] * 4 * m < sum) {
                System.out.println("No");
                return;
            } a[i] * 4 * m < sum a[i] * 4 * m a[i] * 4 * m a[i] a i 4 m sum {
                System.out.println("No");
                return;
            } System.out.println("No") System.out.println System.out System System.out "No" return; System.out.println("Yes") System.out.println System.out System System.out "Yes" String[] args args public class Main {
    public static void main(String[] args){
        Scanner sc = new Scanner(System.in);
        int n = sc.nextInt();
        int m = sc.nextInt();
        // 配列
        int[] a = new int[n];
        int sum = 0;
        for(int i=0;i<n;i++){
            a[i] = sc.nextInt();
            sum+=a[i];
        }
        Arrays.sort(a);

        for (int i = n-1;i > n-1-m;i--) {
            if(a[i] * 4 * m < sum) {
                System.out.println("No");
                return;
            }
        }
        System.out.println("Yes");
    }
} public class Main {
    public static void main(String[] args){
        Scanner sc = new Scanner(System.in);
        int n = sc.nextInt();
        int m = sc.nextInt();
        // 配列
        int[] a = new int[n];
        int sum = 0;
        for(int i=0;i<n;i++){
            a[i] = sc.nextInt();
            sum+=a[i];
        }
        Arrays.sort(a);

        for (int i = n-1;i > n-1-m;i--) {
            if(a[i] * 4 * m < sum) {
                System.out.println("No");
                return;
            }
        }
        System.out.println("Yes");
    }
} Main
import java.util.Arrays;
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();
        // 配列
        int[] a = new int[n];
        int sum = 0;
        for(int i=0;i<n;i++){
            a[i] = sc.nextInt();
            sum+=a[i];
        }
        Arrays.sort(a);

        for (int i = n-1;i > n-1-m;i--) {
            if(a[i] * 4 * m < sum) {
                System.out.println("No");
                return;
            }
        }
        System.out.println("Yes");
    }
}
